A pulsed fiber laser oscillator comprising in succession: a pumping source (10) for providing pumping energy at a first wavelength to a multimode optical fiber; a first Bragg grating optical filter (11 ) reflecting a second wavelength and transparent to said first wavelength; an active optical fiber (20) having a predefined wavelength which emits radiation at said second wavelength; a switch (14) arranged to periodically interrupt said second wavelength to provide a pulsed laser beam; and a second Bragg grating optical filter (15) partially reflecting said second wavelength; characterized by comprising, following said active optical fiber (20), a reflector (21 ) of said first wavelength, such that said pumping energy undergoes two passages within said active optical fiber (20); said predefined wavelength being determined such that the absorption of said pumping energy at said first wavelength within said active optical fiber (20) is greater than 80% after undergoing said two passages.
H01S 3/117 - Q-switching using intracavity acousto-optic devices
H01S 3/102 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
H01S 3/094 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
H01S 3/113 - Q-switching using intracavity saturable absorbers
A laser system for the marking of metallic and non-metallic materials comprising a laser oscillator (1), characterized in that said laser oscillator (1) comprises: an active optical means (13) of the crystal laser type, a laser pump (10) to provide a pump energy to said active optical means (13); a mirror (14) disposed upstream said active optical means (13); an optical switch (16), apt to provide a pulsed laser beam, disposed downstream said active optical means (13); a mode adaptor (18) coupled to said optical switch (16); a predetermined length single-mode optical fiber (19), coupled to said mode adapter (18); a Bragg Grating type reflector coupled to said optical fiber (19).
B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
H01S 3/08 - Construction or shape of optical resonators or components thereof
H01S 3/094 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
H01S 3/0941 - Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a semiconductor laser, e.g. of a laser diode
H01S 3/115 - Q-switching using intracavity electro-optic devices
H01S 3/117 - Q-switching using intracavity acousto-optic devices
A laser system for the marking of metallic and non- metallic materials comprising a laser oscillator (1), characterized in that said laser oscillator (1) comprises: an active optical means (13) of the crystal laser type, a laser pump (10) to provide a pump energy to said active optical means (13); a mirror (14) disposed upstream said active optical means (13); an optical switch (16), apt to provide a pulsed laser beam, disposed downstream said active optical means (13); a mode adaptor (18) coupled to said optical switch (16); a predetermined length single-mode optical fibre (19), coupled to said mode adapter (18); a Bragg Grating type reflector coupled to said optical fibre (19).
System for automatically acquiring optically coded information, illuminator for said system and method for aligning with each other optical components of the system
An illuminating device for a system for automatically acquiring optically encoded information includes at least one illuminating element, the at least one illuminating element including at least one linear light source extending along a first direction, at least one reflecting optical element associated with the at least one linear light source and suitable for reflecting a light beam emitted by the at least one light source, the optical element having at least one first focus, the linear light source being arranged within an area surrounding the first focus, the illuminating device further includes rotating means suitable for rotating the at least one reflecting optical element with respect to the at least one first focus, with a rotation center arranged within a further area surrounding the at least one first focus.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
5.
LASER SYSTEM FOR PROCESSING MATERIALS WITH MEANS FOR FOCUSSING AND ANTICIPATING SAID FOCUSSING OF THE LASER BEAM; METHOD OF OBTAINING A LASER BEAM AT THE EXIT OF AN OPTICAL FIBRE WITH PREDETERMINED VARIANCE
A laser system for processing thin film composite materials, such as solar cells and in general materials produced by depositing various layers of dielectric, semiconductor and conductor substances on rigid or flexible substrates of glass and/or polymers, comprising a laser generator (10) producing a laser beam; means (11, 12, 15) for transferring said laser beam into an optical fibre (14); and a focuser (17) applied to the end of said optical fibre (14) to supply said laser beam to said materials, wherein said transfer means (11, 12, 15) comprise a lens for focusing said laser beam and, coupled to said focusing lens, means for anticipating the focusing of said laser beam relative to the surface of said fibre (14) by a predetermined value.
An optical code reader includes a manually operated focusing distance adjustment mechanism, which includes an electronic memory of a configuration parameter representing the desired focusing distance.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
7.
WELDING LASER SYSTEM AND METHOD WITH A PLURALITY OF WORKING STATIONS, EACH WORKING STATION WITH ACTUATOR FOR ENABLING THE LASER ONLY IN PROXIMITY OF SUCH ACTUATOR
The present application relates to a welding laser system comprising: a laser source (14) providing a laser beam,- a focusing unit (11) for said laser beam; means (15) for conveying said laser beam between said laser source (14) and said focusing unit (11), wherein the system further comprises: a plurality of working stations (13) each provided with a position sensor; said focusing unit (11) being able to be positioned to correspond with one of said plurality of stations (13); each of said stations (13) comprising an actuator (24) for activating said laser beam, enabled only when said focusing unit (11) is positioned in proximity to said position sensor.
A fixed vision system includes a sensor having a sensitive surface for acquiring an image of an object on a detecting plane, and a light-emitting device for generating a luminous reference figure on the detecting plane including an emission surface, and an objective through which a luminous radiation (from the object to the sensor) and a further luminous radiation (from the light-emitting device to the object) pass. The sensor and the light-emitting device are positioned such that, when the detecting plane is focused by the objective on the sensor, the sensitive surface is on the image plane generated by the objective or on a respective mirror plane with respect to the image plane and the emission surface of the light-emitting device is on the image plane or on a respective mirror plane with respect to the image plane.
H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
G01B 15/02 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
9.
SYSTEM FOR AUTOMATICALLY ACQUIRING OPTICALLY CODED INFORMATION, ILLUMINATOR FOR SAID SYSTEM AND METHOD FOR ALIGNING WITH EACH OTHER OPTICAL COMPONENTS OF THE SYSTEM.
An illuminating device for a system for automatically acquiring optically encoded information, comprising at least one illuminating element (1), said at least one illuminating element (1) comprising at least one linear light source (2) extending along a first direction, at least one reflecting optical element (3) associated with, said at least one linear light source (2) and suitable for reflecting a light beam (L) emitted by said at least one light source (2), said optical element having at least one first focus (P), said linear light source (2) being arranged within an area surrounding said first focus (P), the illuminating device further comprises rotating means (6; I1 8; 9, 10) suitable for rotating said at least one reflecting optical element (3) with respect to said at least one first focus (F), with a rotation centre arranged within a further area surrounding said at least one first focus (F).
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
The invention regards an optical code reader comprising a manually operated focusing distance adjustment mechanism, characterised by comprising an electronic memory of a configuration parameter representing the desired focusing distance.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
11.
VISION SYSTEM, METHOD FOR INSTALLING A VISION SYSTEM AND METHOD FOR MANUFACTURING A VISION SYSTEM
A fixed vision system comprises a sensor (2) for acquiring an image of an object on a detecting plane (38), said sensor comprising a sensitive surface (10), a light -emitting device (3) for generating a luminous reference figure (39) on said detecting plane (38), said light-emitting device (3) comprising an emission surface (61a, 61b; 61c, • 51; 89; 61d; 61e,- 6If), at least an objective (36) through which a luminous radiation and a further luminous radiation pass, said luminous radiation coming from said object and being directed to said sensor (2) and said further luminous radiation coming from said light -emitting device (3) and being directed to said object, characterised in that said sensor (2) and said light-emitting device (3) are positioned in such a way that, when said detecting plane (38) is focussed by said objective (36) on said sensor (2), said sensitive surface (10) of said sensor (2) is on the image plane (60; 66; 67; 69; 73; 92) generated by said objective (36) or on a respective mirror plane (63, 64; 65) with respect to said image plane (60; 66; 67; 69; 73; 92) and said emission surface (10) of said light-emitting device (2) is on said image plane (60; 66; 67; 69; 73; 92) or on a respective mirror plane (63, 64; 65) with respect to said image plane (60; 66; 67; 69; 73; 92).
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
An optical receiving device (31) for an optical code reader is described, comprising a solid body, of a transparent material, having a light input face (32), a light output face (33) for coupling with a photodetector device (30), said output face (33) being substantially perpendicular to said input face (32), and an oblique face (34) with respect to both said input face (32) and said output face (34), characterized in that the mutual orientation of the faces (32-38, 40-42, 40′, 41′, 42′) of the optical receiving device (31) is such that the light entering from said input face (32) within a desired field of view is concentrated onto said output face (33) by total internal reflection.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
A system for image acquisition for acquiring images comprising at least two optical devices for acquiring images, each optical device comprising a respective linear camera (101a-101e) suitable for acquiring images from at least, one object passing on a transporting plane (102), at least one lighting device (104a-104e) associated with each of said at least two cameras (101a-101e) and suitable for lighting said object in regions of said object from which said images may be acquired, said lighting devices (104a-104e) light said object with light pulses, said light pulses being synchronised so that light generated by said at least one lighting device (104a-104e) associated with a camera (101a- 101e) does not interfere with the acquisition of another of said at least two' cameras (101a-101e), said cameras acquiring said images only when the respective at least one lighting device (104a-104e) is active.
G06K 7/10 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation
patents
