A method for producing spectacles lenses (10), in which method, starting with a blank which has predetermined surface geometries on a front face (12) and a rear face (14) remote therefrom and having a contoured edge (16) therebetween, a finished part is formed by material removal and/or deposition. In a step of generating an optically active shape of the spectacles lens, the semifinished product is shaped, which has an edge region (18) in which an orientation structure (20) is also made. For at least one subsequent step of further machining, the location and position of the semifinished product in space are clearly identified and established with the aid of a positioning receptacle (22) arranged in a defined manner in space.
An apparatus and a related method are for unpacking optical elements disposed in a package box which is closed. The apparatus includes a package identification unit equipped with a reader for identifying the package box, a first interface to exchange data with a package database containing information related to the dimensions and identity of package boxes, to the orientation of an optical element within a package box, to the presence or not of a plastic cup within a package box, a laser cutting unit to cut a package box according to a dedicated cutting pattern, an opening and take-out unit for opening a package box which has been cut according to the dedicated cutting pattern, and for taking the optical element out of the opened package, and a waste management unit to sort out the empty package box and separately, when present, a plastic cup.
B65B 69/00 - Unpacking of articles or materials, not otherwise provided for
B25J 11/00 - Manipulators not otherwise provided for
G06K 7/14 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
3.
Device for Fixing an Optical Workpiece for its Processing/Treatment and Method of Fixing an Optical Workpiece on such a Device
A device (10) for retaining a prismatic spectacle lens (12) at one workpiece surface (14) for processing of the other workpiece surface (16) comprises lower and upper parts (20, 22). The lower part has a base (24) with a holding interface (26) and a wedge section (28). The lower part and upper part are rotatable relative to one another by their mutually facing wedge sections about a rotational axis (DA) inclined with respect to the base axis and retention axis so as to tilt the retaining section and base relative to one another. A wedge orientation arrangement comprises an orientation aid (34) at the upper part and/or an abutment (36) between the upper part and lower part, which defines a relative rotational angle end position of the upper part and lower part corresponding with a minimum or maximum tilt of the retaining section with respect to the base.
A method for machining optical workpieces has the following steps: i) providing the blank that is to be machined at least on the rear side and edge; ii) receiving the blank without a block in order to retain it in a supported manner; iii) machining the blank on the front side by use of a first tool to form a peripheral geometric shape with a depth greater than or equal to the edge thickness of the semifinished product to be formed; iv) receiving the workpiece to retain it in a supported manner on the front side; and v) machining the workpiece on the rear side by use of a second tool to form the semifinished product with the predetermined surface geometry on the rear side.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
5.
Retainer for the Processing of Optical Workpieces, Particularly Spectacle Lenses
A retainer for the processing of workpieces comprises a housing with a holding arrangement for a workpiece to be processed as well as a support arrangement therefor, which comprises a plurality of longitudinally displaceable pins accommodated in a chamber bounded by the housing. The pins are selectively fixable by a clamping mechanism with their pin ends for firmly supporting the workpiece. The clamping mechanism has at least one force transmission element which is movable with respect to the pins by forces able to be applied by fluid so as to selectively clamp the pins in an unactuated state of the retainer or free them in an actuated state of the retainer.
An elastic membrane for a retainer for the processing of optical workpieces is constructed with a securing section for mounting on a housing of the retainer, so as to bound therein a chamber by a retaining section which is connected with the securing section. The retaining section has an outer side, on which a workpiece can be placed over an area by a workpiece surface, and an inner side, which is constructed to contact a support arrangement, for the workpiece. The retaining section has a perforation with at least one opening connecting the inner side and outer side and by way of which a vacuum applied to the chamber can be conducted to the outer side. Associated with the opening is a semi-permeable, functional membrane which extends merely locally in a region directly adjoining the opening.
There is provided a surfacing station for processing of surfaces of optical elements as workpieces, including a processing unit configured to process surfaces of optical elements; a controller unit configured to communicate with a database containing processing protocols, which can be carried out by the surfacing station, and to control operation of the processing unit in accordance with the processing protocols; and an identification tag base configured to communicate with the controller unit and configured to determine identification tags of consumable items used by the surfacing station, the controller unit being configured to enable a surfacing protocol for processing of the optical elements as workpieces in function of an identified consumable item.
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
8.
Loading System for an Optical Machine, in Particular for Loading and Unloading Optical Workpieces, such as Eyeglass Lenses, and Deblocking Apparatus Comprising a Loading System of this Type
The invention relates to a loading system (LS) for an optical machine, that has a carrier (TR), which can be moved in a movement plane (x-y) by way of two linear guide units (LF1, LF2). At least one holder (H1, H2, H3) for a workpiece, block piece and/or tool is mounted on the carrier, which holder can be moved in a transverse direction (z), which is perpendicular to the movement plane. The linear guide units are designed and arranged in the manner of an H gantry or cross gantry, with two stationary drive motors (AM1, AM2) for driving a tension element (ZG) in the same direction or in opposite directions, which tension element is movably arranged on the linear guide units in an H shape or cross shape and is fastened to the carrier.
B23Q 7/16 - Loading work on to conveyorsArranging work on conveyors, e.g. varying spacing between individual workpieces
B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
9.
ADAPTER RING FOR AN OPTICAL ELEMENTS HOLDER DEVICE AND A RELATED OPTICAL ELEMENTS HOLDER DEVICE
The present invention refers to an optical elements holder device (11) for a coating station (5) comprising at least one sheet carrier (21) having individual openings (23), said opening (23) having in its inner face at least one shoulder (25) configured to hold an optical element (3) such as lenses during a coating procedure, said sheet carrier (21) presenting the shape of a dome or a part of a dome which is mounted above a vaporization source (9) so that the optical elements (3) are oriented towards said vaporization source (9), wherein it also comprises at least one adapter ring (31b) comprising an outer portion (33) configured to be supported by the at least one shoulder (25) of the opening (23) of the sheet carrier (21).
A hydraulic arrangement (HA) for an apparatus (AV) for deblocking optical workpieces (L), from associated block pieces (B), includes a nozzle arrangement (DA) for delivery of high pressure jets of pressure means for deblocking the workpiece from the associated block piece at a first pressure and for cleaning the blocked workpiece and/or block piece at least one second pressure which is different from the first pressure. Furthermore, there is a pump device (PE) which applies pressure in a defined manner to the pressure means and conveys it under pressure to the nozzle arrangement. The pump device has at least one high pressure pump (HP1, HP2) which is drivable by an associated rotary drive (SM1, SM2), the speed of which is modifiable in order to adjust the first pressure or the second pressure.
B08B 3/02 - Cleaning by the force of jets or sprays
B08B 11/00 - Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B26D 7/00 - Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
B28D 7/00 - Accessories specially adapted for use with machines or devices of the other groups of this subclass
B28D 7/04 - Accessories specially adapted for use with machines or devices of the other groups of this subclass for supporting or holding work
F04B 23/02 - Pumping installations or systems having reservoirs
F04B 23/06 - Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
11.
SUBSTRATE HOLDER ARRANGEMENT FOR HOLDING CURVED SUBSTRATES DURING A VACUUM COATING PROCESS AND VACUUM COATING APPARATUS HAVING SUCH SUBSTRATE HOLDER ARRANGEMENT
An arrangement (10) for holding substrates (SS) curved along a main extension direction is adapted to be received in a vacuum chamber (14) of a coating apparatus (12) vis-a-vis to an evaporation source (16), and comprises a hub portion (18) rotatably drivable about a first rotational axis (RA1), arm members (20) radially extending away therefrom, and roller bodies (22) mounted on the arm members so as to be rotatably drivable about second rotational axes (RA2). The roller bodies carry fixtures (24) for holding the substrates with their main extension directions transverse to the respective second rotational axis, each arranged tiltable relative to the roller body about a tilt axis (TA) running transversely to said second rotational axis, so that an angle between a surface normal (SN) in a center (CE) of the held substrate and a perpendicular (PP) on said second rotational axis passing through the center can be adjusted.
An optical machine (AV) for treatment and/or processing optical workpieces (L) has a machine frame (MG) on which a workpiece holding arrangement (WH) is movably supported and at least two treatment and/or processing devices (DB1, DB2, DB3) for treatment and/or processing a workpiece. The workpiece holding arrangement has a plurality of partition walls (TW) which separate and delimit at least three work spaces (AR1, AR2, AR3, AR4) from one another. The work spaces can be moved, together with the workpiece holding arrangement.
An optical machine (AV) for treatment and/or processing optical workpieces (L) has a machine frame (MG) on which a workpiece holding arrangement (WH) is movably supported and at least two treatment and/or processing devices (DB1, DB2, DB3) for treatment and/or processing a workpiece. The workpiece holding arrangement has a plurality of partition walls (TW) which separate and delimit at least three work spaces (AR1, AR2, AR3, AR4) from one another. The work spaces can be moved, together with the workpiece holding arrangement.
To each work space, a workpiece holder (CH) is assigned for the purpose of parallel use of the work spaces. Each work space can be moved, together with the workpiece holding arrangement, with respect to the machine frame in a movement cycle from a loading station (PS) on the machine frame, via stationary treatment and/or processing stations (DS, CS) which are spatially distanced from the loading station.
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
13.
TRANSPORTATION CARRIER FOR AUTOMATED LENS MANUFACTURING PROCESS AND RELATED MANUFACTURING FACILITY
A transportation carrier is provided for automated lens manufacturing in a lens manufacturing facility, including: at least one block piece or one block piece receiving section; and an electronic paper display configured to display at least an up-to-date status information of the manufacturing process of the optical elements carried by the transportation carrier that is intelligible for a human operator without use of a reading device, the electronic paper display including a wireless communication module and a memory configured to exchange and to memorize job information and to process information for lenses to be manufactured, in which the electronic paper display is further configured to function as a passive RFID tag with the wireless communication module.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
The invention relates to a method for producing spectacles lenses (10), in which method, starting with a blank, via a semifinished product, a finished product, which has predetermined surface geometries on a front face (12) and a rear face (14) remote therefrom and having a contoured edge (16) therebetween, is formed by material removal and/or deposition. In the process, in a main step of generating an optically active shape of the spectacles lens, the semifinished product is shaped, which has an edge region (18) in which an orientation structure (20) is also made. For at least one subsequent main step of further machining, the location and position of the semifinished product in space are clearly identified and established with the aid of a positioning receptacle (22) arranged in a defined manner in space, for the purpose of which the positioning receptacle comprises a positioning structure (24) to which the semifinished product is mechanically interlockingly oriented by its orientation structure prior to the semifinished product being held and further machined or transported. Positioning receptacles suitable therefor are also disclosed, as well as combinations of positioning receptacles and semifinished products placed thereon.
A machine for processing an edge profile of an ophthalmic lens. The machine is defined by mutually perpendicular X, Y and Z axes. The machine comprises a machine frame, a lens holder unit for selectively holding the ophthalmic lens, a laser scanner unit for determining an edge profile of the ophthalmic lens mounted to the lens holder unit, and a main controller operatively connected to each of the lens holder unit and the laser scanner unit. The lens holder unit is configured to selectively rotate the ophthalmic lens around a C-axis of the lens holder unit, tilt the ophthalmic lens relative to the laser scanner unit and move rectilinearly relative to the machine frame in the directions of the Y axis. The laser scanner unit is selectively moveable rectilinearly relative to the machine frame in the directions of the X and Z axes.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
16.
DEVICE (SYSTEM) AND METHOD FOR DETERMINING EDGE PROFILE OF LENS
A machine for processing an edge profile of an ophthalmic lens. The machine is defined by mutually perpendicular X, Y and Z axes. The machine comprises a machine frame, a lens holder unit for selectively holding the ophthalmic lens, a laser scanner unit for determining an edge profile of the ophthalmic lens mounted to the lens holder unit, and a main controller operatively connected to each of the lens holder unit and the laser scanner unit. The lens holder unit is configured to selectively rotate the ophthalmic lens around a C-axis of the lens holder unit, tilt the ophthalmic lens relative to the laser scanner unit and move rectilinearly relative to the machine frame in the directions of the Y axis. The laser scanner unit is selectively moveable rectilinearly relative to the machine frame in the directions of the X and Z axes.
G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
The invention relates to an apparatus (100) and a related method for unpacking optical elements disposed in a package box which is closed. The apparatus (100) comprises - a package identification unit (102) equipped with a reader (104) for identifying the package box, - a first interface (106) to exchange data with a package database containing information related to the dimensions and identity of package boxes, to the orientation of an optical element within a package box, to the presence or not of a plastic cup within a package box, - a laser cutting unit (110) configured to cut a package box according to a dedicated cutting pattern, - an opening and take-out unit (112) for opening a package box which has been cut according to the dedicated cutting pattern, and for taking the optical element out of the opened package, a waste management unit (114) configured to sort out the empty package box and separately, when present, a plastic cup.
A workpiece holding head (10) has a housing (50), in/on which a holding arrangement (48) and a support arrangement (49) for an optical workpiece (14) are accommodated. The holding arrangement has a rubber-elastic sealing sleeve (52) which is mounted on the housing and which has a circumferential sealing lip (53) for contact with the workpiece, said sealing lip surrounding an opening (54) on the housing, to which opening a vacuum can be applied. The support arrangement has a plurality of longitudinally displaceable pins (55) that can be placed against the workpiece and that can be fixed with respect to the housing by means of a clamping mechanism (56). Each of the pins is assigned a pneumatically actuated piston-cylinder arrangement (57), by means of which the pin can be moved outwards with respect to the housing into a support position for the workpiece or, conversely, inwards into a park position that avoids workpiece contact, depending on the pneumatic actuation. Also disclosed is a method for machining glasses lenses without using a block piece, in which method, for example, such a workpiece holding head ensures that the location and position of the workpiece in space are always clearly defined.
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 41/06 - Work supports, e.g. adjustable steadies
19.
RETAINER FOR THE PROCESSING OF OPTICAL WORKPIECES, IN PARTICULAR EYEGLASS LENSES
Disclosed is a retainer (10) for processing optical workpieces each having two workpiece surfaces and a workpiece rim therebetween. The retainer comprises a holding assembly (72) and a support assembly (73) for the workpiece. A rubber-elastic membrane (75) mounted on a housing (74) has a retaining portion (76), on the outer side (77) of which one surface of the workpiece can be placed to lie flat. The membrane, together with the housing, defines a chamber (78) in which a plurality of separately longitudinally movable pins (79) of the support assembly are retained. A pin end (80) of each pin can be brought to bear against an inner side (81) of the retaining portion of the membrane and can be fixed relative to one another by a clamping mechanism (82) or the like, optionally against a longitudinal movement with respect to the housing, in order to securely support the retaining portion according to a geometry of the workpiece being held by means of the holding assembly. The holding assembly for the workpiece is provided in or on the retaining portion of the membrane and allows the workpiece to be held without coming into contact with the workpiece rim.
A method for machining optical workpieces, in which a semifinished product (HZ) having predetermined surface geometries on the front side (FS) and rear side (RS) and a contoured edge (RA) of predetermined edge thickness (D2) therebetween is formed from a blank (RL), comprises the following main steps: i) providing the blank that is to be machined at least on the rear side and edge and has a blank thickness (D1); ii) receiving the blank without a block in order to retain it in a supported manner on the rear side; iii) machining the blank on the front side by means of a first tool (WZ1) in order to form a peripheral geometric shape (NU) with a depth (TI) greater than or equal to the edge thickness of the semifinished product to be formed, wherein a circumferential surface (UF) that defines the contoured edge of the semifinished product to be formed remains on the workpiece; iv) receiving the workpiece in order to retain it in a supported manner on the front side; and v) machining the workpiece on the rear side by means of at least one second tool in order to form the semifinished product with the predetermined surface geometry on the rear side.
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
21.
Holder for Holding a Substrate, in Particular a Spectacle Lens, During Vacuum Coating Thereof in a Box Coating Apparatus and Device for Loading/Unloading the Substrate into/from such Holder
A holder (10) for holding a substrate (L) during vacuum coating comprises a base body (12) with a masking portion (14) provided with an opening (16) adapted to receive the substrate. The opening in the masking portion is shaped to correspond to or closely match the shape of the substrate to be held without substantial gaps therebetween. The masking portion is provided with a slot (22) that extends radially outward from an inner edge (18) of the opening. A narrow spring arm of a spring arrangement mounted to the holder is received in the slot and adapted to resiliently bear against an outer edge (E) of the substrate to urge the substrate toward a support area (24) at the inner edge of the opening on a side opposite said slot. Further, a loading/unloading device (60) for loading the substrate into such holder and for unloading it therefrom is proposed.
A manufacturing facility for manufacturing an optical element according to a prescription includes a first station configured for surfacing and polishing a second face of a lens blank and pre-cleaning the second face of the lens blank including a finishing drying which allows the lens blank to be put on hold, a second station configured for deep cleaning the second face of the lens blank and hard coating the second face of the lens blank, a tunnel oven configured to degas the lens blank, a vacuum box coater configured to apply an antireflection (AR)-coating, and a third station configured to deblock the processed lens blank from the block piece.
C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
C23C 14/02 - Pretreatment of the material to be coated
The invention relates to a transportation carrier (T) for automated lens manufacturing in a lens manufacturing facility comprising at least one block piece or one block piece receiving section (ET2) wherein the transportation carrier (T) further comprises an electronic paper display (EPD) configured to display at least an up to date status information which is intelligible for a human operator without use of a reading device.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
G05B 19/12 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
G05B 19/16 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using magnetic record carriers
25.
HYDRAULIC ARRANGEMENT FOR AN APPARATUS FOR BLOCKING OPTICAL WORKPIECES, IN PARTICULAR EYEGLASS LENSES, FROM ASSOCIATED BLOCK PIECES
The invention relates to a hydraulic arrangement (HA) for an apparatus (AV) for blocking optical workpieces (L), such as eyeglass lenses, from associated block pieces (B), comprising a nozzle arrangement (DA) for delivery of high pressure jets of pressure means for blocking the workpiece from the associated block piece at a first pressure and for cleaning the blocked workpiece and/or block piece at at least one second pressure which is different from the first pressure. Furthermore, there is a pump device (PE) which applies pressure in a defined manner to the pressure means and conveys it under pressure to the nozzle arrangement. In order to reliably enable a suitable pressure generation, the pump device has at least one high pressure pump (HP1, HP2) which is drivable by an associated rotary drive (SM1, SM2), the speed of which is modifiable in order to adjust the first pressure or the second pressure. Alternatively or in addition, the pump device has two high pressure pumps which generate the first pressure and the second pressure.
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
G05D 16/20 - Control of fluid pressure characterised by the use of electric means
26.
LOADING SYSTEM FOR AN OPTICAL MACHINE, IN PARTICULAR FOR LOADING AND UNLOADING OPTICAL WORKPIECES, SUCH AS EYEGLASS LENSES, AND DEBLOCKING DEVICE COMPRISING A LOADING SYSTEM OF THIS TYPE
The invention relates to a loading system (LS) for an optical machine, in particular for the loading and unloading of optical workpieces (L), such as eyeglass lenses, and/or of block pieces (B) for blocking the workpieces and/or of tools. Said loading system has a carrier (TR), which can be moved in a movement plane (x-y) by means of two linear guide units (LF1, LF2). At least one holder (H1, H2, H3) for the workpiece, block piece and/or tool is mounted on the carrier, which holder can be moved in a perpendicular direction (z), which is perpendicular to the movement plane. The linear guide units are designed and arranged in the manner of an H gantry or cross gantry, with two stationary drive motors (AM1, AM2) for driving a tension element (ZG) in the same direction or in opposite directions, which tension element is movably arranged on the linear guide units in an H shape or cross shape and is fastened to the carrier. The loading system is preferably used in a deblocking device (AV) to transport blocked and deblocked workpieces and block pieces very highly dynamically between a transfer station (TS) and a loading station (PS) of the deblocking device and to receive and release said workpieces and block pieces there.
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B24B 41/00 - Component parts of grinding machines or devices, such as frames, beds, carriages or headstocks
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
An optical machine (AV) for handling and/or processing optical workpieces (L), such as ophthalmic lenses, comprises a machine frame (MG) on which a workpiece holding assembly (WH) is movably supported and at least two handling and/or processing apparatuses (DB1, DB2, DB3) for handling and/or processing a workpiece held in the workpiece holding assembly are mounted. The workpiece holding assembly comprises a plurality of partitions (TW) which separate and delimit at least three working chambers (AR1, AR2, AR3, AR4) from one another, which working chambers can be moved, together with the workpiece holding assembly, to the handling and/or processing apparatuses. Each working chamber is assigned to a workpiece holder (CH) for the purpose of parallel use of the working chambers for various workpieces. When being used as a deblocking device, each working chamber can be shifted, together with the workpiece holding assembly, with respect to the machine frame in a movement cycle from a stationary loading station (PS) on the machine frame, via stationary deblocking and cleaning stations (DS, CS) which are spatially distanced from said loading station and comprise the handling and/or processing apparatuses, and back to the loading station (PS), such that the working chambers can be used simultaneously for various workpieces and different processes.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
28.
Device for mixing and/or dosing liquid coating materials, coating system having such a device, and method for coloring optical glasses
The invention relates to a device (12) for mixing/dosing liquid coating materials, in particular for use in a coating system (10) for spectacle lenses, said device having at least a first and a second storage container (14-24) for liquid starting materials, a conveying device (26) for sucking in and expelling liquids, a mixing container (28), and a liquid outlet (30) for mixed/dosed liquid coating materials. In between there is a multi-way valve (32), which can be switched into different valve positions and is constructed to produce one of the following connections (a, b, c, d) and in the process to disconnect the other connections: (a) connection between the first storage container and the conveying device, (b) connection between the second storage container and the conveying device, (c) connection between the conveying device and the mixing container, and (d) connection between the conveying device and the liquid outlet.
B01F 25/451 - Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by means for moving the materials to be mixed or the mixture
B01F 31/65 - Mixers with shaking, oscillating, or vibrating mechanisms the materials to be mixed being directly submitted to a pulsating movement, e.g. by means of an oscillating piston or air column
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B01F 33/84 - Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
B01F 101/30 - Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel
B29C 35/08 - Heating or curing, e.g. crosslinking or vulcanising by wave energy or particle radiation
B29L 11/00 - Optical elements, e.g. lenses, prisms
A cleaning station for an optical element is providing, including: an optical element holder configured to hold the optical element; a first drive configured to rotate the optical element holder around a rotation axis coinciding with an optical axis of the optical element when held by the optical element holder; a cleaning nozzle configured to project a cleaning jet of a cleaning liquid towards the optical element; and a separate drying nozzle configured to project a drying jet towards the optical element, the cleaning nozzle and the drying nozzle being configured to move in order to direct the cleaning jet and the drying jet, respectively, successively to different locations on the optical element.
The invention relates to a cleaning station (1) for an optical element (3) comprising - an optical element holder (5) for holding the optical element (3), - a first drive (7) for rotating the optical element holder (5) around a rotation axis (A), the rotation axis (A) coinciding with the optical axis (OA) of the optical element (3) when held by the optical element holder (5), - a cleaning nozzle (11) configured to project a cleaning jet (13) of a cleaning liquid towards the optical element (3), wherein the cleaning station (1) further comprises a separate drying nozzle (49) configured to project a drying jet (49A) towards the optical element (3), and the cleaning nozzle (11) and the drying nozzle (49) are configured to move in order to direct respectively the cleaning jet (13) / the drying jet (49A) successively to different locations on the optical element (3).
B08B 3/02 - Cleaning by the force of jets or sprays
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
31.
OPTICAL ELEMENTS HOLDER DEVICE FOR A COATING STATION
The invention relates to an optical elements holder device for a coating station comprising: - a sheet carrier (21) having holes (23) and presenting the shape of a dome or a part of a dome, - elastic blocking means (24) fixed to the sheet carrier (21) associated to each hole (23), wherein the elastic blocking means (24) comprise at least three elastic contact portions distributed on the circumference of the hole (23) and configured to block a block piece (B)carrying a lens blank (SFB) in order that the lens blank (SFB) may be hold in a predetermined position for coating.
The invention relates to a method for manufacturing an optical element according to a prescription comprising the following steps : - providing (SI) a combination (CB) of a block piece (B) and a lens blank (SFB) having a first face (cx) and a second face (cc) opposite to the first face (cx), the lens blank (SFB) being blocked with the first face (cx) on the block piece (B), - surfacing and polishing (S2) the second face of the lens blank, - cleaning (S3-W/-R-S6) the lens blank, - hard coating (S7) the second face of said lens blank, - degassing (S8) the lens blank, - applying (S9) an AR-coating in a vacuum box coater, - deblocking (S10) the processed lens blank from said block piece, wherein said cleaning step comprises - a pre-cleaning step (S3-S4) including a finishing drying step allowing the lens blank to be put on hold, - a deep cleaning step (S5-W/-D-S6) prior to the hard coating step.
There is provided a surfacing station for processing of surfaces of optical elements as workpieces, including a processing unit configured to process surfaces of optical elements; a controller unit configured to communicate with a database containing processing protocols, which can be carried out by the surfacing station, and to control operation of the processing unit in accordance with the processing protocols; and an identification tag base configured to communicate with the controller unit and configured to determine identification tags of consumable items used by the surfacing station, the controller unit being configured to enable a surfacing protocol for processing of the optical elements as workpieces in function of an identified consumable item.
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
34.
Device for processing optical workpieces, particularly spectacle lenses
A device for processing spectacle lenses has a work chamber, which is accessible by way of an opening and in which a workpiece mount and at least one tool mount are opposite one another and movable relative to one another so that a processing region of a tool held at the tool mount can be brought into processing engagement with a workpiece held at the workpiece mount and in processing engagement can be guided over the workpiece. For recognition of wear at the tool, a sensor equipment with at least one contactlessly operating sensor arrangement is provided and is movable outside the work chamber between a protected rest position and a detecting position. In the detecting position the sensor equipment is constructed to detect at the processing region of the tool held at the tool mount an unacceptable deviation beyond a predetermined amount from a desired geometry.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
B23Q 17/24 - Arrangements for indicating or measuring on machine tools using optics
B23Q 11/08 - Protective coverings for parts of machine toolsSplash guards
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
35.
Method for manufacturing optical elements according to a prescription
A method for manufacturing an optical element according to a prescription is provided, including providing a combination of a block piece and a lens blank having a first face and a second face opposite to the first face, the lens blank being blocked with the first face on the block piece, surfacing and polishing the second face of the lens blank, cleaning the lens blank, hard coating the second face of the lens blank, degassing the lens blank, applying an AR-coating in a vacuum box coater, and deblocking the processed lens blank from the block piece, wherein the cleaning step includes a pre-cleaning step including a finishing drying step allowing the lens blank to be put on hold, and a deep cleaning step prior to the hard coating step.
C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
C23C 14/02 - Pretreatment of the material to be coated
G02B 1/14 - Protective coatings, e.g. hard coatings
A box coating apparatus for vacuum coating of substrates comprises a vacuum chamber which contains an evaporation source for evaporating coating material and a substrate holder disposed vis-à-vis to the evaporation source so that coating material evaporated by the evaporation source can impinge on substrates held by the substrate holder. An electric heating device is centrally arranged in the vacuum chamber, which is constructed to heat up the vacuum chamber during vacuum check and cleaning routines. So as to be removable from the vacuum chamber prior to the deposition processes, the heating device is provided with a stand having a plurality of leg portions mounted to a base plate, which are sized and constructed at the base plate so that the heating device can be placed over and above the evaporation source.
A compensating pad for applying to an ophthalmic lens blank to be blocked, or for interposing between an ophthalmic lens blank and a block piece. The compensating pad comprises a main body that is designed to be elastic having a maximum thickness corresponding to a maximum layer thickness difference of the ophthalmic lens blank, in order to locally compensate for the layer thickness difference of the blocked ophthalmic lens blank.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B24B 13/01 - Specific tools, e.g. bowl-likeProduction, dressing or fastening of these tools
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
A box coating apparatus (10) for vacuum coating of substrates comprises a vacuum chamber (12) containing an evaporation source (14) and a substrate holder (16) formed as a dome vis-a-vis to the evaporation source and rotatable about an axis (R). A masking arrangement (20) is located in between for partially shadowing the substrates on the substrate holder relative to the evaporation source. The masking arrangement comprises a fixed masking portion (22) stationary in the vacuum chamber, and a plurality of gradient sector portions (24, 26, 28) carrying gradient shields assigned to the substrates on the substrate holder, for forming a gradient mask. The gradient sector portions can be rotated about said axis between a gradient mask open position where they are stored behind the fixed masking portion, and a gradient mask closed position where they are spread like a fan between the evaporation source and the substrate holder.
A machine (10) for machining workpieces with optical quality has at least one workpiece spindle (12), via which a workpiece (L) to be machined is able to be driven in rotation about a workpiece axis of rotation (C), and also has a swivel head (14) that is located opposite the workpiece spindle, is pivotable about a pivot axis (B) and bears at least two tool spindles (16, 18) on each of which at least one machining tool (T1, T2, T3) is held so as to be able to be driven in rotation about a tool axis of rotation (D, D'). In addition, the workpiece spindle and the swivel head (14) are adjustable relative to one another along three linear axes (X, Y, Z) that are perpendicular to one another, one linear axis (Y) of which extends parallel to the pivot axis (B) while another linear axis (Z) extends parallel to the workpiece axis of rotation (C). At least one tool spindle is attached to the swivel head with its tool axis of rotation (D') extending parallel to the pivot axis (B), thereby allowing a multiplicity of different machining strategies, in particular also the machining of large workpieces and workpieces with large changes in topography with high precision.
B23Q 1/62 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only with perpendicular axes, e.g. cross-slides
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B24B 47/12 - Drives or gearings for grinding machines or devicesEquipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
B23Q 39/00 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
40.
Blocking unit for a block piece for a spectacle lens and process of curing
A blocking unit for a block piece for a spectacle lens comprising a block piece reception body with a reception surface adapted to receive a block piece with a spectacle lens to be blocked and a bottom surface opposite the working surface, and a plurality of light sources fixedly mounted to the block piece reception body. A process of curing a lens on a block piece. The process comprises the steps of defining, in a controller, a pattern of illumination, and sequentially turning on and off the light sources from a plurality of first light sources and optional second light sources based on the determined pattern, for curing a material between the lens and the block piece.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B23Q 1/54 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only two rotating pairs only
41.
TOOL SPINDLE FOR A DEVICE FOR FINE MACHINING OPTICALLY ACTIVE SURFACES ON WORKPIECES
The invention relates to a tool spindle (10) for a device (12) for fine machining optically active surfaces (cc, cx) on workpieces (L), having a spindle housing (14) and a tool holding portion (16) which protrudes beyond the housing. The tool holding portion can be axially advanced (advancing axis Z) towards the workpiece along the tool rotational axis via a guiding assembly (18), which can be rotated about a tool rotational axis (A) in the spindle housing, and if necessary can be tilted about a tilting point (K) on the tool rotational axis. In order to axially advance the tool holding portion, the guide assembly has a plurality of linear mounting elements (20), which are distributed about the tool rotational axis in a uniform manner, and respective paired guide rods (22), which are connected to the tool holding portion in a traction- and pressure-resistant manner. In this manner, the tool holding portion is capable of following the macro geometry of the workpiece in a smooth and delicate manner when machining the micro geometry of the workpiece.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 41/053 - Grinding heads for working on plane surfaces for grinding or polishing glass
B23Q 1/70 - Stationary or movable members for carrying working-spindles for attachment of tools or work
A device for fine processing of optically effective surfaces on workpieces has a workpiece spindle which protrudes into a working space and by which a workpiece to be polished can be rotationally driven about a workpiece axis of rotation. Two tool spindles are associated with the workpiece spindle and protrude into the working space oppositely to the workpiece spindle. On each tool spindle, a polishing tool can be rotationally driven about a tool axis of rotation and is retained so that the polishing tool can be axially advanced along the tool axis of rotation. Furthermore, the tool spindles can be moved together in relation to the workpiece spindle along a linear axis extending substantially perpendicularly to the workpiece axis of rotation and can be pivoted about different pivoting adjustment axes, which extend substantially perpendicularly to the workpiece axis of rotation and substantially perpendicularly to the linear axis.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
43.
Polishing disc for a tool for fine processing of optically effective surfaces on spectacle lenses
The invention relates to a polishing disc for a tool for fine processing optically active surfaces on spectacle lenses, having a main body which has a central axis and to which an intermediate layer that is softer than the main body and is made of a resilient material is secured, a polishing medium carrier resting on the intermediate layer. The intermediate layer has at least two regions with different degrees of hardness, said regions being arranged one behind the other in the direction of the central axis of the main body. The intermediate layer region adjoining the main part is softer than the intermediate layer region on which the polishing medium carrier rests.
B24D 13/14 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face
B24B 13/01 - Specific tools, e.g. bowl-likeProduction, dressing or fastening of these tools
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
B24D 9/00 - Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
44.
Device for blocking workpieces, particularly spectacle lenses, for the processing and/or coating thereof
A device for blocking workpieces has an aligning station that includes a workpiece support for aligning a workpiece. A blocking station comprises a block piece mount and serves to block the aligned workpiece by use of a block material on a block piece, which can be mounted in the block piece mount in a centered manner in relation to a substantially vertically extending blocker axis. A workpiece carriage carries a holding head for the workpiece and is suitably guided and driven to transport the workpiece from the aligning station to the blocking station to position the workpiece along the blocker axis in a defined manner relative to the block piece held in the block piece mount, and to hold the workpiece during blocking in the defined relative position to the block piece with a gap between workpiece and body piece.
The invention relates to a support consisting of natural and/or synthetic fibers which particles are held, which are preferably water-soluble, comprising at least one active agent, said particles at least partially releasing the active agent(s) under the effect of an external stress, characterized in the active agent has a water-solubility of between 0.1 and 60 wt. %, preferably between 0.1 and 30 wt. %.
A61K 8/02 - Cosmetics or similar toiletry preparations characterised by special physical form
A01N 25/08 - Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of applicationSubstances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
A61Q 17/00 - Barrier preparationsPreparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
A61Q 17/02 - Barrier preparationsPreparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings containing insect repellants
B01J 13/04 - Making microcapsules or microballoons by physical processes, e.g. drying, spraying
C11D 11/00 - Special methods for preparing compositions containing mixtures of detergents
46.
Method for machining optical workpieces, in particular, plastic spectacle lenses
A method of processing a workpiece with a first surface and a second surface facing away therefrom includes the following principal steps: (i) blocking the workpiece with the aid of a blocking material on a blocking member with the blocking material between blocking member and first surface, (ii) processing the workpiece by a geometrically defined cutting edge at the second surface for achieving the desired macrogeometry, (iii) processing the workpiece by a geometrically undefined cutting edge at the second surface for achieving the desired microgeometry and (iv) deblocking the workpiece from the blocking member. The principal step (ii) includes a plunge-cutting sub-step (ii.2) in which by a geometrically defined cutting edge an encircling plunge cut is produced which extends through the first surface as far as into the blocking material so that the workpiece with a predetermined edge profile remains on the blocking member radially within the plunge cut.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
B23Q 39/00 - Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B23C 3/34 - Milling grooves of other forms, e.g. circumferential
B23C 3/16 - Working surfaces curved in two directions
B23B 27/00 - Tools for turning or boring machinesTools of a similar kind in generalAccessories therefor
B23P 23/00 - Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
47.
Machine for coating an optical article with an anti-soiling coating composition and method for using the machine
A machine for coating an optical article with an anti-soiling coating composition, includes a vacuum chamber (8) configured to receive the optical article, a vacuum pump (20) connected to the vacuum chamber (8), a plasma generator (11) configured to carry out a vacuum plasma treatment of the optical article, an evaporation device (10) configured to carry out a vacuum evaporation treatment of the composition for depositing it on the optical article, a control unit (2) controlling the plasma generator for removing an initial outermost anti-soiling coating of the article, controlling the evaporation device for recoating the article with the anti-soiling coating composition, being configured to causes the vacuum pump (20) to suck gases from the chamber (8) during vacuum plasma treatment and being further configured to causes the vacuum pump (20) not to suck gases from the chamber (8) during vacuum evaporation treatment.
2. The precursor of the antifog coating, which furthermore possesses antifouling properties, is converted into an actual antifog coating by applying a surfactant film to its surface.
A polishing disc for a tool for fine processing of optically effective surfaces on spectacle lenses is described. The disc includes a base body having a center axis with a secured intermediate layer of a resilient material, on which a polishing medium carrier rests. The intermediate layer is softer by comparison with the base body, where the intermediate layer has two regions of different hardness arranged in succession in the direction of the center axis and being formed by mutually different foam material layers. The foam material layer adjoining the base body is softer than the foam material layer on which the polishing medium carrier rests. Further, as determined for the case of whole-area compression, the static modulus of elasticity of the harder foam material layer is between 0.40 and 1.50 N/mm2, and the static modulus of elasticity of the softer foam material layer is between 0.25 and 0.45 N/mm2.
B24B 13/01 - Specific tools, e.g. bowl-likeProduction, dressing or fastening of these tools
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
B24D 9/00 - Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
B24D 13/14 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face
50.
POLISHING DISC FOR A TOOL FOR FINELY MACHINING OPTICALLY ACTIVE SURFACES ON SPECTACLE LENSES
The invention relates to a polishing disc (10) for a tool (12) for finely machining optically active surfaces on spectacle lenses, having a main part (14) which has a central axis (M) and to which an intermediate layer (16) that is softer than the main part and is made of an elastic material is secured, a polishing means support (18) resting on said intermediate layer. The intermediate layer has at least two regions (20, 22) with different degrees of hardness, said regions being arranged one behind the other in the direction of the central axis of the main part. The intermediate layer region adjoining the main part is softer than the intermediate layer region on which the polishing means support rests. The simply constructed polishing disc can cover a large enough range of spectacle lens curvatures so as to allow a high prescription productivity.
B24D 13/14 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face
B24B 13/01 - Specific tools, e.g. bowl-likeProduction, dressing or fastening of these tools
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
B24D 9/00 - Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
51.
DEVICE FOR FINELY MACHINING OPTICALLY EFFECTIVE SURFACES ON, IN PARTICULAR, EYEGLASS LENSES
The invention relates to a device (10) for finely machining optically effective surfaces on, in particular, eyeglass lenses as workpieces, comprising a workpiece spindle (14), which protrudes into a working space (13) and by means of which a workpiece to be polished can be rotationally driven about a workpiece axis of rotation (C), and two tool spindles (16, 16'), which are associated with the workpiece spindle and which protrude into the working space oppositely to the workpiece spindle. On each tool spindle, a polishing tool (18, 18') can be rotationally driven about a tool axis of rotation (A, A') and is retained in such a way that the polishing tool can be axially advanced (advancing axis Z, Z') along the tool axis of rotation. Furthermore, the tool spindles can be moved together in relation to the workpiece spindle along a linear axis (X) extending substantially perpendicularly to the workpiece axis of rotation and can be pivoted about different pivoting adjustment axes (B, B'), which extend substantially perpendicularly to the workpiece axis of rotation and substantially perpendicularly to the linear axis. The tool spindles are arranged one behind the other as viewed in the direction of the linear axis. As a result of the chosen arrangement, the device is very compact and can be used in a versatile manner for various polishing processes and polishing strategies.
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
A device (10) for blocking workpieces comprises an aligning station (11), which has a workpiece support (12), for aligning a workpiece laid on same, a block station (13) comprising a block piece mount (14), in which block station the aligned workpiece can be blocked by means of a block material on a block piece, which can be mounted in the block piece mount in a centred manner in relation to a substantially vertically extending blocking axis (V), and a workpiece carriage (16) which carries a holding head (15) for the workpiece and which is suitably guided and driven, by means of which workpiece carriage the workpiece held on the holding head can be transported from the aligning station to the block station, can be positioned along the blocking axis in a defined manner relative to the block piece held in the block piece mount and can be held between workpiece and block piece during blocking in the defined relative position to the block piece by leaving a gap between block material and mount. In this way, the aligning station can be moved from a resting position, in which same does not prevent movements of the workpiece carriage, into a working position, in which the workpiece support is centred with respect to the blocking axis, and vice versa.
The present invention proposes a blocking unit (10) for a block piece (2) for a spectacle lens (L) comprising a block piece reception body (20) with a reception surface (22) adapted to receive a block piece (2) with a spectacle lens (L) to be blocked and a bottom surface opposite the reception surface, and a plurality of light sources (51, 52) fixedly mounted to the block piece reception body (20). The blocking unit (10) comprises a controller (80) adapted to individually control the light sources. A process of curing a lens (L) on a block piece (2) is also disclosed. The process comprises the steps of defining, in a controller (80), a pattern of illumination, and sequentially turning on and off the light sources (51, 52) from a plurality of first light sources (51) and optional second light sources (52) based on the determined pattern, for curing a material between the lens (L) and the block piece (2).
Machines for the surfacing of spectacle lenses made from mineral glass or organic glass, as well as parts thereof, namely, CNC (computer numerical control) controlled machines for polishing of ophthalmic surfaces of ophthalmic lenses; machine-driven tools for polishing spectacle and ophthalmic lenses and parts and accessories thereof, namely, form machine tools for polishing optical parts with bound and loose abrasive, polishing base, polishing pads, polishing discs, polishing foils, polishing cloth and polishing felt; machine parts, namely, machine tool holders for mounting polishing tools, machine tools holders in the nature of work piece holders for clamping of optical lenses, and work piece chucks for polishing machinery in the nature of collet chucks, and machine tools holders in the nature of work piece holders with membranes; loading machines, namely, electromagnetically or pneumatically operated handling and loading machines for polishing machinery; machines, apparatuses and devices for carrying substrates and tools, namely, swivel arm industrial robots, plastic suction cups specially adapted for polishing machines, belt conveyors and tray magazines in the nature of non-metal or metal tool trays sold empty specially adapted for polishing machines, and replacement parts therefor
Machines for the surfacing of spectacle lenses made from mineral glass or organic glass, as well as parts thereof, namely, CNC (computer numerical control) controlled machines for polishing of ophthalmic surfaces of ophthalmic lenses; machine-driven tools for polishing spectacle and ophthalmic lenses and parts and accessories thereof, namely, form machine tools for polishing optical parts with bound and loose abrasive, polishing base, polishing pads, polishing discs, polishing foils, polishing cloth and polishing felt; machine parts, namely, machine tool holders for mounting polishing tool, machine tool holders in the nature of work piece holders for clamping of optical lenses, and work piece chucks for polishing machinery in the nature of collet chucks, and machine tools holders in the nature of work piece holders with membranes
Machines for the surfacing of spectacle lenses made from mineral glass or organic glass, as well as parts thereof, namely, CNC (computer numerical control) controlled machines for polishing of ophthalmic surfaces of ophthalmic lenses; machine-driven tools for polishing spectacle and ophthalmic lenses and parts and accessories thereof, namely, form machine tools for polishing optical parts with bound and loose abrasive, polishing base, polishing pads, polishing discs, polishing foils, polishing cloth and polishing felt; machine parts, namely, machine tool holders for mounting polishing tools, machine tools holders in the nature of work piece holders for clamping of optical lenses, and work piece chucks for polishing machinery in the nature of collet chucks, and machine tools holders in the nature of work piece holders with membranes
Machines for the surfacing of spectacle lenses made from mineral glass or organic glass, as well as parts thereof, namely, CNC (computer numerical control) controlled machines for polishing of ophthalmic surfaces of ophthalmic lenses; machine-driven tools for polishing spectacle and ophthalmic lenses and parts and accessories thereof, namely, form machine tools for polishing optical parts with bound and loose abrasive, polishing base, polishing pads, polishing discs, polishing foils, polishing cloth and polishing felt; machine parts, namely, machine tool holders for mounting polishing tools, machine tools holders in the nature of work piece holders for clamping of optical lenses, and work piece chucks for polishing machinery in the nature of collet chucks, and machine tools holders in the nature of work piece holders with membranes; loading machines, namely, electromagnetically or pneumatically operated handling and loading machines for polishing machinery; machines, apparatuses and devices for carrying substrates and tools, namely, swivel arm industrial robots, plastic suction cups specially adapted for polishing machines, belt conveyors and tray magazines in the nature of non-metal or metal tool trays sold empty specially adapted for polishing machines, and replacement parts therefor
Machines for the surfacing of spectacle lenses made from mineral glass or organic glass, as well as parts thereof, namely, CNC (computer numerical control) controlled machines for polishing of ophthalmic surfaces of ophthalmic lenses; machine-driven tools for polishing spectacle and ophthalmic lenses and parts and accessories thereof, namely, form machine tools for polishing optical parts with bound and loose abrasive, polishing base, polishing pads, polishing discs, polishing foils, polishing cloth and polishing felt; machine parts, namely, machine tool holders for mounting polishing tools, machine tools holders in the nature of work piece holders for clamping of optical lenses, and work piece chucks for polishing machinery in the nature of collet chucks, and machine tools holders in the nature of work piece holders with membranes; loading machines, namely, electromagnetically or pneumatically operated handling and loading machines for polishing machinery; machines, apparatuses and devices for carrying substrates and tools, namely, swivel arm industrial robots, plastic suction cups specially adapted for polishing machines, belt conveyors and tray magazines in the nature of non-metal or metal tool trays sold empty specially adapted for polishing machines, and replacement parts therefor
59.
FIBROUS SUPPORT COMPRISING PARTICLES CONTAINING A PARTIALLY WATER-SOLUBLE ACTIVE AGENT, PARTICLES, AND METHODS FOR PRODUCING SAID PARTICLES
The invention relates to a support consisting of natural and/or synthetic fibres whereon particles are held, which are preferably water-soluble, comprising at least one active agent, said particles at least partially releasing the active agent(s) under the effect of an external stress, characterised in the the active agent has a water-solubility of between 0.1 and 60 wt. %, preferably between 0.1 and 30 wt. %.
A lens blank is proposed, having a first face, an opposite, second face, and an edge inbetween, the first face possessing a final curvature and being coated, in this order, with an antireflection coating, a top coating, and a temporary grip coating. The antireflection coating has a stack of alternating antireflection layers with an outermost layer, whereas the top coating is selected from a group including hydrophobic, oleophobic and dirt repelling coatings. The temporary grip coating and the outermost layer of the antireflection coating are made from one and the same coating material. In this way the temporary grip coating effectively serves to provide sufficient adhesion to the blocking material on the block piece in the processing steps, and can easily be removed from the processed lens upon deblocking without degrading the repelling properties of the top coating.
G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
G02B 1/18 - Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
The present invention relates to a dry wipe comprising a woven or knitted microfiber fabric having hydrophilic polymer microfibers and lipophilic polymer microfibers, which is impregnated with at least one surfactant, the hydrophilic/lipophilic balance (HLB) of which is greater than or equal to 5. These wipes can be used to clean the surface of substrates and/or to confer demisting properties on hydrophilic surfaces.
A device for grinding and/or polishing of, in particular, precision-optical spherical lens surfaces has a machine frame, a tool spindle for rotational drive of a tool about a tool axis of rotation and a workpiece spindle for rotational drive of a workpiece about a workpiece axis of rotation. The tool spindle and workpiece spindle are capable of axial relative adjustment in first and second directions extending perpendicularly to one another and in addition pivotable about a pivot axis in a pivot plane relative to one another. Equipment for cross-grinding adjustment is provided, which has an adjusting mechanism to position the workpiece spindle in a third direction extending perpendicularly to the first and second directions. A clamping mechanism activatable independently of the adjusting mechanism serves the purpose of fixing the workpiece spindle, once positioned, with respect to the machine frame.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 11/00 - Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on workAccessories therefor
B24B 13/01 - Specific tools, e.g. bowl-likeProduction, dressing or fastening of these tools
63.
OPTICAL ARTICLE COMPRISING A COATING THAT IS A PRECURSOR OF AN ANTIFOG COATING HAVING ANTIFOULING PROPERTIES
The present invention relates to an optical article having a substrate coated with a coating that is a precursor of an antifog coating, the surface of which has a static contact angle with water larger than 90° and a polar surface energy component higher than 1.5 mJ/m2. The precursor of the antifog coating, which furthermore possesses antifouling properties, is converted into an actual antifog coating by applying a surfactant film to its surface.
A cooling lubricant supply device for supply of a cooling lubricant to a grinding wheel is rotatably mounted as a tool on a grinding spindle of a processing unit in a grinding machine. The device has a feed shoe, which is mounted at least indirectly on a grinding spindle housing and seated on a circumferential surface of the grinding wheel and which has a seating surface facing the grinding wheel. The seating surface has a shape substantially complementary with the circumferential surface of the grinding wheel and is provided centrally with a pocket-like recess into which the cooling lubricant can be fed under pressure. A spring mechanism is provided, by which the feed shoe is biased with the seating surface thereof against the circumferential surface of the grinding wheel.
B24B 55/02 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
G02B 27/62 - Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
The present invention relates to an optical article having a substrate coated with a coating that is a precursor of an antifog coating, the surface of which has a static contact angle with water larger than 90° and a polar surface energy component higher than 1.5 mJ/m2. The precursor of the antifog coating, which furthermore possesses antifouling properties, is converted into an actual antifog coating by applying a surfactant film to its surface.
The present invention relates to an antimicrobial and antifog composition comprising: (a) at least a non ionic surfactant comprising a hydrophilic unit and a hydrophobic unit, said hydrophilic unit containing poly(oxyalkylene) units responding to the [−(R1-O)z−]n with R1 represents linear or branched alkylene groups, such as propylene or ethylene and z is an integer equal or higher than 1, preferably ranging from 1 to 40, the number n of said poly(oxyalkylene) units being equal or higher than 3, and (b) at least an alcohol compound of low molecular weight equal or less than 500 g/mol, whererin the weight ratio R of the non ionic surfactant/alcohol compound is such that 2.5≤R≤200 and the content of the at least alcohol compound by weight, relative to the total weight of the antimicrobial composition is ranging from 0.01% to 5%. The present invention also relates to an aqueous solution comprising the above mentionned antimicrobial and antifog composition, and dry microfiber tissue and non woven wet tissue impregnated with said aqueous solution, and an opticle article comprising a main surface coated with a temporary antimicrobial film or coating obtained by wiping said main surface with one of the above tissues.
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 9/06 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
B24B 9/08 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
68.
Machine for processing optical workpieces, in particular plastic spectacle lenses
The invention relates to a machine for processing plastic workpieces. A machine housing surrounds a working chamber located between a workpiece spindle for rotationally driving the workpieces about a workpiece axis of rotation and a fast tool servo for producing an oscillating feeding movement of a rotary tool in the direction of the workpieces. The workpiece spindle is provided with a carriage which can be driven and is guided on at least two guide surfaces of a guiding arrangement in order to produce a relative advancing movement between the workpiece and the rotary tool. The advancing movement runs transversely with respect to the feeding movement and defining therewith a processing plane in which during processing the rotary tool engages with the workpiece. The guiding arrangement is mounted on the machine housing such that the processing plane extends between the two guide surfaces.
B23B 5/00 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor
B23B 5/36 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
A device for supplying a liquid cooling lubricant to a cutting edge of a lathe tool is operatively connected with a fast-tool servo by way of a tool holder in order to be able to execute oscillating movements in an advance direction in common with the tool holder. A first connection is stationary with respect to a housing of the fast-tool servo, for a cooling lubricant source and an outlet, which is in fluid connection with the first connection, for delivery of a cooling lubricant jet to the lathe tool. The outlet is provided at the tool holder and is in fluid connection with the first connection by way of a hose portion so that the cooling lubricant jet delivered via the outlet always impinges at a predetermined point on the cutting edge of the lathe tool even when stroke movements of the tool holder take place.
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B23B 27/10 - Cutting tools with special provision for cooling
B23Q 11/10 - Arrangements for cooling or lubricating tools or work
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
B24B 55/02 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
B23B 25/00 - Accessories or auxiliary equipment for turning-machines
The present invention relates to a dry wipe comprising a woven or knitted microfibre fabric having hydrophilic polymer microfibres and lipophilic polymer microfibres, which is impregnated with at least one surfactant, the hydrophilic/lipophilic balance (HLB) of which is greater than or equal to 5. These wipes can be used to clean the surface of substrates and/or to confer demisting properties on hydrophilic surfaces.
C11D 3/00 - Other compounding ingredients of detergent compositions covered in group
A47L 1/15 - Cloths, sponges, pads, or the like, e.g. containing cleaning agents
C03C 17/30 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
C11D 11/00 - Special methods for preparing compositions containing mixtures of detergents
C11D 17/04 - Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
The present invention relates to a dry wipe comprising a woven or knitted microfibre fabric having hydrophilic polymer microfibres and lipophilic polymer microfibres, which is impregnated with at least one surfactant, the hydrophilic/lipophilic balance (HLB) of which is greater than or equal to 5. These wipes can be used to clean the surface of substrates and/or to confer demisting properties on hydrophilic surfaces.
C11D 3/00 - Other compounding ingredients of detergent compositions covered in group
A47L 1/15 - Cloths, sponges, pads, or the like, e.g. containing cleaning agents
C03C 17/30 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
C11D 11/00 - Special methods for preparing compositions containing mixtures of detergents
C11D 17/04 - Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
09 - Scientific and electric apparatus and instruments
Goods & Services
Solutions and other preparations for the cleaning and care
of spectacle lenses and ophthalmic lenses (other than
contact lenses); Solutions and other preparations for
anti-fogging care of spectacle lenses and ophthalmic lenses
(other than contact lenses); fabric wipes impregnated with
solutions and other preparations for cleaning and/or care,
particularly anti-fog care, for spectacle lenses and
ophthalmic lenses. Ophthalmic lenses; spectacle lenses; treated ophthalmic
lenses and spectacle lenses; ophthalmic lenses and spectacle
lenses coated with an anti-fogging coating; ophthalmic
lenses and spectacle lenses with anti-fogging properties;
coatings for ophthalmic lenses and spectacle lenses.
73.
Optical article comprising a surfactant-based temporary antifog coating with an improved durability
x+1H (VIII), wherein x is an integer ranging from 1 to 14, y is an integer lower than or equal to 10, compounds of formula (VIII) in which y=6 representing at least 90% by weight by weight, relative to the weight of compounds (VIII) present in the composition, so as to form an antifog coating, having preferably a static contact angle with water lower than or equal to 10°.
C09D 171/00 - Coating compositions based on polyethers obtained by reactions forming an ether link in the main chainCoating compositions based on derivatives of such polymers
C09D 183/00 - Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon onlyCoating compositions based on derivatives of such polymers
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
C08K 5/41 - Compounds containing sulfur bound to oxygen
C08K 5/5415 - Silicon-containing compounds containing oxygen containing at least one Si—O bond
C08K 5/5419 - Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
C03C 17/28 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material
C03C 17/30 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
C03C 17/34 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
B05D 1/28 - Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
B05D 1/36 - Successively applying liquids or other fluent materials, e.g. without intermediate treatment
01 - Chemical and biological materials for industrial, scientific and agricultural use
02 - Paints, varnishes, lacquers
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Solutions et autres préparations de nettoyage et d'entretien pour verres de lunettes ; solutions et autres préparations d'entretien antibuée pour verres de lunettes ; lingettes en tissu imprégnées de solutions ou autres préparations de nettoyage et/ou d'entretien, notamment antibuée, pour verres de lunettes. Verres de lunettes ; verres de lunettes traités ; verres de lunettes revêtus d'une couche antibuée ; verres de lunettes aux propriétés antibuée; revêtements de verres de lunettes.
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
09 - Scientific and electric apparatus and instruments
Goods & Services
Cleaning solutions, namely, solutions and other preparations for the cleaning and care of spectacle lenses and ophthalmic lenses other than contact lenses; cleaning solutions, namely, solutions and other preparations for anti-fogging care of spectacle lenses and ophthalmic lenses other than contact lenses; fabric wipes impregnated with cleaning solutions, namely, solutions and other preparations for cleaning and/or care, particularly anti-fog care, for spectacle lenses and ophthalmic lenses [ Ophthalmic lenses; spectacle lenses; treated ophthalmic lenses and spectacle lenses; ophthalmic lenses and spectacle lenses coated with an anti-fogging coating; ophthalmic lenses and spectacle lenses with anti-fogging properties ]
76.
Device for the fine machining of optically active surfaces on, in particular, spectacle lenses
A device for the fine machining of optically active surfaces in particular spectacle lenses, has a spindle shaft which has a tool-holder portion and is mounted in a spindle housing such that it can rotate about a tool rotation axis. The device has an electric rotary drive with a rotor and a stator that rotates the spindle shaft operatively connected to the rotor about the tool rotation axis. The tool-holder portion can be displaced axially in the direction of the tool rotation axis. The rotor and the stator parts are axially guided in a guide tube along the tool rotation axis. The spindle shaft is in the form of a hollow shaft, via which the tool-holder portion, which is configured to hold a membrane chuck, can be subjected to a fluid.
B24B 41/053 - Grinding heads for working on plane surfaces for grinding or polishing glass
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
A centering machine for, in particular, optical lenses has two centering spindles. The rotationally drivable centering spindle shafts are axially aligned with respect to a centering axis and constructed at the ends for the mounting of clamping bells. A stroke device axially adjusts one centering spindle shaft relative to the other centering spindle shaft along the centering axis for alignment of the lens between the clamping bells. A clamping device applies to a centering spindle shaft a clamping force clamping the aligned lens. At least one processing unit is movable relative to the centering axis, with a tool for edge processing of the clamped lens. In order to enable an optimized bell clamping process, the stroke device and the clamping device and/or a rotary drive for the axially adjustable centering spindle shaft are arranged coaxially with respect to the centering axis.
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 55/02 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
The invention relates in particular to a method for centring grinding of workpieces such as optical lenses by means of a grinding tool using an actuator (34) for generating a relative advancing movement between the grinding tool and the workpiece, wherein the actuator is integrated in a current regulator (48) for an actuator current which determines an advancing force of the actuator in a position control loop (40) which is run through using a predetermined control cycle. In the method, for each control cycle: (i) a desired direction of movement (Rsoll(n)) of the advancing movement and an actual direction of movement (Rist(n)) of the advancing movement are ascertained; then (ii) the ascertained actual and desired directions of movement are compared to one another; and finally, (iii) when the comparison results in a deviation between the actual and desired directions of movement, a predetermined current limit (ISollmax) for the actuator current emitted via the current regulator is decreased in a defined manner in order to reduce the advancing force of the actuator. As a result the advancing movement and material machining can be carried out quickly and efficiently without overstressing the tool or workpiece.
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 9/06 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
B24B 9/08 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
79.
DEVICE FOR FINE MACHINING OF OPTICALLY EFFECTIVE SURFACES ON IN PARTICULAR SPECTACLE LENSES AND FLEXIBLE PRODUCTION CELL COMPRISING SUCH A DEVICE
The invention relates to a polishing machine (14) for in particular spectacle lenses (L), comprising at least one workpiece spindle (20) protruding into a workspace (18) for a rotary drive of the spectacle lens (L) about a workpiece rotational axis (Cl), at least one feed device (22) for lowering and raising (ZI) a polishing tool (W) relative to the spectacle lens (L), an oscillation drive unit (24) for moving the feed device back and forth in an oscillation direction (X), which during the polishing runs substantially transversely to the workpiece rotational axis, and a swivel drive unit (26) for swivelling the feed device about a swivel-adjusting axis (B) which runs substantially perpendicular to the workpiece rotational axis and substantially normal to the oscillation direction. In order to provide a very compact and ergonomically designed polishing machine, a swivel mechanism (28) is provided, by means of which the feed device, the oscillation drive unit and the swivel drive unit can be swivelled relative to the workpiece spindle away from a closed relative position, in which the workspace is opened up, into an open relative position and vice versa (swivel movement S).
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
The invention relates to a machine (10) for processing in particular plastic spectacle lenses (L), comprising a machine housing (18) which surrounds a working chamber (24) located between a workpiece spindle (26) for rotationally driving the spectacle lens about a workpiece axis of rotation (B axis) and a fast tool servo (28) for producing an oscillating feeding movement (F axis) of a rotary tool (30) in the direction of the spectacle lenses. The workpiece spindle is provided with a carriage (32) which can be driven and is guided on at least two guide surfaces (34, 36) of a guiding arrangement (38) in order to produce a relative advancing movement (X axis) between the spectacle lens and the rotary tool, said advancing movement running transversely with respect to the feeding movement and defining therewith a processing plane (F-X plane) in which during processing the rotary tool engages with the spectacle lens. For a very compact and rigid configuration of the machine, the guiding arrangement is mounted on the machine housing such that the processing plane extends between the two guide surfaces.
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
A device for deblocking optical workpieces, having a first moving device for rotating a workpiece, which is blocked on a blocking piece, about a workpiece rotational axis and a nozzle for dispensing a pressurized stream in a direction that is essentially transverse to the workpiece rotational axis onto a point of incidence in an edge region between the blocking piece and the workpiece. The device also has a second moving device for generating a relative movement between the nozzle and the workpiece. The second moving device has a nozzle guiding portion on which the nozzle is mounted and by which the nozzle can be positioned with respect to the blocking piece in a cam-controlled manner in order to aim the pressurized stream towards the point of incidence in a defined manner.
The present invention relates to an optical article comprising a substrate coated with a coating preferably comprising silanol groups on its surface and, directly contacting this coating, an antifog coating precursor coating, said precursor coating preferably having a static contact angle with water of more than 10° and of less than 50°and being obtained through the grafting of at least one organosilane compound possessing a polyoxyalkylene group and at least one silicon atom bearing at least one hydrolyzable group,and is further coated with a film obtained by applying a composition containing at least one surfactant of formula F(CF2)y-(CH2-CH2O)x+1H (VIII), wherein x is an integer ranging from 1 to 14, y is an integer lower than or equal to 10, compounds of formula (VIII) in which y=6 representing at least 90% by weight by weight, relative to the weight of compounds (VIII) present in the composition, so as to form an antifog coating, having preferably a static contact angle with water lower than or equal to 10°.
The present invention relates to an optical article comprising a substrate coated with a coating preferably comprising silanol groups on its surface and, directly contacting this coating, an antifog coating precursor coating, said precursor coating preferably having a static contact angle with water of more than 10° and of less than 50°and being obtained through the grafting of at least one organosilane compound possessing a polyoxyalkylene group and at least one silicon atom bearing at least one hydrolyzable group,and is further coated with a film obtained by applying a composition containing at least one surfactant of formula F(CF2)y-(CH2-CH2O)x+1H (VIII), wherein x is an integer ranging from 1 to 14, y is an integer lower than or equal to 10, compounds of formula (VIII) in which y=6 representing at least 90% by weight by weight, relative to the weight of compounds (VIII) present in the composition, so as to form an antifog coating, having preferably a static contact angle with water lower than or equal to 10°.
There is disclosed a device (10) for the fine machining of optically active surfaces on in particular spectacle lenses, having a spindle shaft (32) which has a tool-holder portion (34) and is mounted in a spindle housing (36) such that it can rotate about a tool rotation axis (A), and having an electric rotary drive (38) which has a rotor (40) and a stator (42) and by means of which the spindle shaft operatively connected to the rotor can be driven in rotation about the tool rotation axis, while the tool-holder portion can be displaced axially in the direction of the tool rotation axis. A particular feature of this device is that the rotor and the stator and the spindle shaft are arranged coaxially in the spindle housing, which for its part is guided in a guide tube (44) in a defined axially displaceable manner (2) in the direction of the tool rotation axis, wherein the spindle shaft is in the form of a hollow shaft, via which the tool-holder portion, which is configured to hold a membrane chuck (46), can be subjected to a fluid, this bringing about in particular a very compact structure and allowing rapid axial compensating movements of the tool during fine machining.
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
A securing structure for an optical piece is disclosed and which comprises: a hub portion; a surrounding portion connected to the hub portion; a plurality of recess structures formed or otherwise provided in at least one of the hub portion and the surrounding portion and which are at least partially open on at least one side; and a rib structure that at least partially separates the plurality of recess structures. The structure is capable of use with an apparatus for securing and clamping optical lenses (e.g., spectacle lenses) requiring edge-machining.
The invention relates to a deblocking device and an associated method for deblocking optical workpieces, for example, eyeglass lenses. The deblocking device has a first moving apparatus for rotating a workpiece blocked on a block piece about a workpiece rotational axis, a nozzle assembly having a nozzle for discharging a high-pressure pressure medium jet in a direction substantially perpendicular to the workpiece rotational axis onto an edge area between the workpiece and block piece, and a second moving apparatus for generating a relative motion between the workpiece and the nozzle along the workpiece rotational axis.
The proposed polishing tool has a base body with an open interior space with which the polishing tool can be slidably fitted onto a holder of a tool spindle, initially as far as a latching position. A retaining ring placed in an annular groove of the interior space engages in a counter-groove of the holder. The polishing tool can then be slid further onto the holder under the polishing work pressure, until, under the simultaneous action of torque, driver elements of the base body engage in driver counter-elements of the holder for transmitting rotary movement. At least in the latter relative position between the polishing tool and tool spindle, the retaining ring provides a seal against penetration of the abrasive polishing agent.
B24B 13/01 - Specific tools, e.g. bowl-likeProduction, dressing or fastening of these tools
B24B 41/06 - Work supports, e.g. adjustable steadies
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
B24D 13/14 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face
96.
Optical article comprising a temporary anti-fogging coating with improved durability
The present invention relates to an optical article comprising a substrate provided with a coating comprising silanol groups on the surface thereof and, directly contacting this coating, an anti-fog coating precursor coating, said precursor coating having a static contact angle with water of more than 10° and of less than 50°, a thickness lower than or equal to 5 nm, and being obtained through the grafting of at least one organosilane compound having a polyoxyalkylene group comprising less than 80 carbon atoms and at least one silicon atom bearing at least one hydrolyzable group. The anti-fog coating precursor is converted into an actual anti-fog coating by applying on the surface thereof a film of a liquid solution comprising at least one surfactant. The anti-fog coating is immediately operational and provides long-lasting effects.
The invention discloses a device (10) for clamping particularly an eye glass lens blocked on a block piece for processing and/or coating said eye glass lens, comprising a receiving space (34) having a center line (M) for a clamping section of the block piece, and a plurality of clamping surfaces (36) provided in a boundary region of the receiving space, which may optionally be engaged in the clamping section of the block piece in order to clamp the block piece. In order to avoid excessive deformation of the clamped block piece, the clamping surfaces are positioned opposite of each other in pairs at a radial distance to the center line and can be displaced optionally toward or away from each other by a clamping piece (38) in order to clamp the clamping section of the block piece by way of clamping forces (F), which are substantially oriented in a tangential direction at a radial distance to the center line, or in order to release the block piece.
The invention relates to a device (10) for blocking optical workpieces (L), said device comprising a first moving device (12) for rotating a workpiece (L), which is blocked on a blocking piece (B), about a workpiece rotational axis (14) and a nozzle (16) for dispensing a pressure medium high-pressure stream (H) in a direction that is essentially transverse to the workpiece rotational axis onto a point of incidence (A) in an edge region between the blocking piece and the workpiece. The device also comprises a second moving device (18) for generating a relative movement between the nozzle and the workpiece. The aim of the invention is to enable the blocking of the workpieces as securely, damage-free, and quickly as possible. This is achieved in that the second moving device has a nozzle guiding portion (20) on which the nozzle is mounted and by means of which the nozzle can be positioned with respect to the blocking piece in a cam-controlled manner in order to aim the pressure medium high-pressure stream towards the point of incidence in a defined manner.
An optical article including a substrate coated with a coating comprising, on the surface thereof, silanol groups and, in direct contact with this coating, a precursor coating of an anti-fogging coating, said precursor coating having a static contact angle with water greater than 10° and less than 50° and a thickness less than or equal to 5 nm and being obtained by the grafting of at least one organosilane compound having a polyoxyalkylene group comprising less than 80 carbon atoms and at least one silicon atom bearing at least one hydrolysable group. The anti-fogging coating precursor is converted into the actual anti-fogging coating upon application to the surface thereof of a film of a liquid solution containing at least one surface active agent. The anti-fogging coating is immediately operational and provides long-lasting effects.
C03C 17/30 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
