Provided is an anti-fogging plastic spectacle lens having improved abrasion resistance and slipperiness. An anti-fogging plastic spectacle lens 1 includes a water absorbent layer (4) obtained from a composition. The composition contains a (meth)acrylic-based resin (A) having a specific proportion of each of the constituent units derived from specific monomers (a-1) to (a-4), a polyfunctional isocyanate compound (B), and an epoxide (C) as an organic compound having a plurality of epoxy groups. In the (meth)acrylic-based resin (A), a proportion of the constituent unit derived from a monomer (a-1) is 20 mass % or more and 65 mass % or less, a proportion of the constituent unit derived from a monomer (a-2) is 10 mass % or more and 40 mass % or less, and a proportion of the constituent unit derived from a monomer (a-4) is 1 mass % or more and 10 mass % or less relative to 100 mass % of all constituent units.
C09D 183/08 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
G02B 1/14 - Protective coatings, e.g. hard coatings
[Problem] Provided is an optical thin film with which deformation of a base material is sufficiently suppressed, and which has higher performance, has higher flexibility in design, and can be formed more easily with lower cost. [Solution] An optical thin film 1 comprises: at least one first film that has a first material; at least one second film that has a second material; and at least one third film that has a third material. The first material is an oxide compound containing Ti and La. The first film has tensile stress. The refractive index of the first film and the refractive index of the second film are higher than the refractive index of the third film. The third film has compressive stress. The surface accuracy change of a film-forming object surface U on one side of a plate-like base material 2 which is made of synthetic quartz glass and which has a diameter of 30 mm and a thickness of 3 mm when the optical thin film 1 is formed on the film-forming object surface U is 0.2λ or less, where λ is 632.8 nm.
[Problem] To provide an antibacterial and antiviral thin film that is a thin film having antibacterial and antiviral properties, and an optical product. [Solution] An antibacterial and antiviral thin film 1 comprises a water-absorbing layer 4 having a plurality of holes P, the physical film thickness of the water-absorbing layer 4 being not less than 6 μm, wherein an antifogging performance duration time per unit film thickness (1 μm) obtained by dividing an antifogging performance duration time obtained by a vapor test of the water-absorbing layer 4 by a physical film thickness of the water-absorbing layer 4 (measured film thickness (μm)) is not less than 4 seconds/μm. The vapor test is conducted by continuously applying vapor generated by natural vaporization at 40°C to the surface on the water-absorbing layer 4 side to measure, as the antifogging performance duration time, the time from the beginning of the application until fogging begins.
A01N 25/34 - Shaped forms, e.g. sheets, not provided for in any other group of this main group
A01N 61/00 - Biocides, pest repellants or attractants, or plant growth regulators containing substances of unknown or undetermined composition, e.g. substances characterised only by the mode of action
A01P 1/00 - DisinfectantsAntimicrobial compounds or mixtures thereof
The purpose of the present invention is to provide a spectacle lens for suppressing the progression of refractive error, the spectacle lens having both high capability of suppressing the progression of refractive error and predetermined refractive power for normal refraction correction. This spectacle lens has, around an optical center region 22 to which predetermined refractive power for refraction correction is added, an optical region 23 having refractive power different from the refractive power of the optical center region 22. The optical region 23 is continuously disposed in a net shape around a large number of island-shaped regions 24 having the same refractive power as the refractive power of the optical center region 22 and disposed to be separated from each other.
A plastic lens 1 for spectacles includes: a plastic base 2; and a dielectric multilayer film 4 formed on a film formation surface M of the base 2. The dielectric multilayer film 4 includes one or more low refractive index dielectric layers 6, one or more high refractive index dielectric layers 8, and an antibacterial layer 10. The antibacterial layer 10 is a dielectric layer containing metal ion-carrying zeolite, and is disposed closer to an air side than all of the low refractive index dielectric layers 6 and all of the high refractive index dielectric layers 8 are. A physical film thickness of the antibacterial layer 10 is less than 50 nm.
G02B 1/18 - Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
National University Corporation Tokai National Higher Education and Research System (Japan)
Inventor
Okumura, Akira
Nishimoto, Keiji
Inoue, Chiaki
Abstract
An optical product comprising a base member and an optical multilayer film formed directly on or indirectly above a film formation surface of the base member. The optical multilayer film reflects light on a short wavelength side and suppresses reflection of light on a longer wavelength side than the light on the short wavelength side, and has a first layer to an eighth layer counted from the base member side, the first layer is a first Al layer, the second layer is a first low-refractive-index layer, the third layer is a first high-refractive-index layer, the fourth layer is a second low-refractive-index layer, the fifth layer is a second Al layer, the sixth layer is a third low-refractive-index layer, the seventh layer is a second high-refractive-index layer, and the eighth layer is a fourth low-refractive-index layer.
[Problem] To provide an eyeglass lens for suppressing the progression of refractive error that comprises two types of regions with different focal lengths: an optical center region to which a predetermined refractive power is added for refractive correction, and an optical region for suppressing the progression of refractive error that does not contribute to refractive correction, the eyeglass lens serving for refractive correction in which vertical lines and horizontal lines in the visual field are unlikely to be distorted. [Solution] An eyeglass lens 31 is configured to have first to third optical regions 32A-32C with a triple rectangular pattern different in a refractive power from an optical center region 33 that are spaced around the optical center region 33. The first to third optical regions 32A-32C have boundary lines with the surrounding regions in the vertical and horizontal directions.
An optical product includes a base, and an optical film formed on a film-formation surface thereof. The optical film has an Al2O3 layer made of Al2O3 and disposed on the base side, and an SiO2 layer made of SiO2 and having a minutely uneven structure. The method for manufacturing the optical product includes forming, on the base, an Al-based manufacture intermediate film made of aluminium, an aluminium alloy, or an aluminium compound, and immersing the base having the Al-based manufacture intermediate film in an aqueous solution of silica. The silica in the aqueous solution has a concentration of not greater than 10 mg/l.
[Problem] To provide a spectacle lens in which a novel function can be exhibited by a plurality of regions of mutually different colors. [Solution] This spectacle lens 1 has a substrate 2, and a first portion 20 (first antireflection film) and a second portion 22 (second antireflection film) of a convex-side optical multilayer film 4 formed on the substrate 2. A reflection color pertaining to the first portion 20 and a reflection color pertaining to the second portion 22 are mutually different. The substrate 2 also has a near-sight section 12 for viewing objects at a lesser distance. The first portion 20 is arranged in the near-sight section 12.
The purpose of the present invention is to provide a refractive dioptric power determination method which makes it possible to accurately determine a lens power as well as an astigmatic power and an astigmatic axis by a subjective and simple process, is unlikely to cause over-correction, and also makes it possible to reflect a result in the middle of a test in a final power. [Solution] This method is configured such that: a target value for a refractively-corrected visual acuity of an eye subject is set; the subject who wears a test lens or who is with naked eyes is allowed to watch a plurality of visual targets that are oriented in various different directions, in which the target value is employed as a target visual acuity; the subject is allowed to answer the directions; when a result mixedly including a correct answer and an incorrect answer, or a correct answer and an answer unanswerable, or a correct answer, an incorrect answer and an answer unanswerable is obtained, a refractive dioptric power at which the subject can watch with specific possibilities that have been preset previously in all of directions in the peripheral direction of the visual target corresponding to the target visual acuity is estimated on the basis of the relationship between the answers and refractive dioptric powers corresponding to the answers; and the refractive dioptric power of the ophthalmic lens for the subject is determined on the basis of the result of the estimation.
A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
[Problem] To provide a notch filter with a wider free filter region. [Solution] A notch filter 1 has a free filter region, that is, a wavelength range that allows the transmission of light, and one or more stop bands which are disposed between upper and lower limits of the free filter region and which suppress the transmission of light in a predetermined wavelength range. The notch filter 1 comprises a base material 2 and an optical multilayer film 4 formed directly or indirectly on a base material surface M, which is the surface of the base material 2. The optical multilayer film 4 is formed on the basis of a basic filter repetition structure in which a basic filter structure comprising alternating low refractive index layers L formed from a low refractive index material and high refractive index layers H formed from a high refractive index material is repeated several times. The thickness of each layer in the optical multilayer film 4 corresponds to a modulation thickness sequence in which modulation is added at a different period from a basic period based on the number of layers in the basic filter structure to a basic thickness sequence in which the thickness of each layer in the basic filter repetition structure is arranged in order from the base material 2 side.
A method for manufacturing an optical thin film having a first thin film portion and a second thin film portion, on a film formation surface of a base member directly or via an intermediate film. The method comprising forming the first thin film portion on a first film formation portion of the film formation surface; forming a washing-time removal film on the first thin film portion, the washing-time removal film having at least one of a fluff-like structure, a pyramid group-like structure and a pinholder-like structure, and being at least one of aluminum and an aluminum compound; forming the second thin film portion on a second film formation portion of the film formation surface, and on the first film formation portion on which the first thin film portion and the washing-time removal film have been formed; and removing the washing-time removal film and the second thin film portion by washing.
A plastic optical product 1 includes optical multilayer films 6 formed via intermediate films 4 on both surfaces of a plastic base 2. In each optical multilayer film 6, SiO2 layers 10 made of SiO2 and ZrO2 layers 12 made of ZrO2 alternate such that a total number of the SiO2 layers 10 and the ZrO2 layers 12 is eight and a layer closest to the base 2 is the ZrO2 layer. The optical multilayer film 6 has a physical film thickness of not less than 480 nm and not greater than 530 nm. A total of physical film thicknesses of all the SiO2 layers 10 is not less than 350 nm and not greater than 440 nm. The ZrO2 layer 12 that is a first layer L1 closest to the base 2 has a physical film thickness of not less than 5 nm and not greater than 12 nm.
G02B 1/02 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of crystals, e.g. rock-salt, semiconductors
A plastic optical product 1 includes optical multilayer films 6 formed via intermediate films 4 on both surfaces of a plastic base 2. In each optical multilayer film 6, SiO2 layers 10 made of SiO2 and ZrO2 layers 12 made of ZrO2 alternate such that a total number of the SiO2 layers 10 and the ZrO2 layers 12 is seven and a layer closest to the base 2 is the SiO2 layer. The SiO2 layer 10 disposed at a third layer L3 counting from the base 2 has a physical film thickness of not less than 210 nm and not greater than 270 nm. The ZrO2 layer 12 disposed at a second layer L2 counting from the base 2 has a physical film thickness of not less than 7 nm and not greater than 12 nm.
[Problem] To provide an anti-fogging plastic spectacle lens having improved abrasion resistance and slippage characteristics. [Solution] An anti-fogging plastic spectacle lens 1 has a water absorption layer 4 obtained from a composition containing: a (meth)acrylic resin (A) including structural units derived from specific monomers (a-1) to (a-4) each at a specific proportion; a polyfunctional isocyanate compound (B); and an epoxide (C) which is an organic compound having a plurality of epoxy groups. In the (meth)acrylic resin (A), with respect to 100 mass% of all structural units, the proportion of the structural unit derived from the monomer (a-1) is 20-65 mass%, the proportion of the structural unit derived from the monomer (a-2) is 10-40 mass%, and the proportion of the structural unit derived from the monomer (a-4) is 1-10 mass%.
C09K 3/18 - Materials not provided for elsewhere for application to surface to minimize adherence of ice, mist or water theretoThawing or antifreeze materials for application to surfaces
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
17.
OPTICAL PRODUCT AND MANUFACTURING METHOD FOR OPTICAL PRODUCT
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
An optical multilayer film of a light-shielding member includes light absorbing layers that absorb visible light and dielectric layers that are made of a dielectric such that a total number of the layers is 4 or more. A surface-side light absorption thickness which is a total of physical film thicknesses of the light absorbing layers disposed between the outermost layer and a next outermost layer is not less than 6 nm and not greater than 17 nm. A base-side light absorption thickness which is a total of physical film thicknesses of the light absorbing layers disposed between the next outermost layer and the base is not less than 60 nm. A specific proportion, regarding a specific surface layer thickness which is a total of the physical film thicknesses of layers from a base-side maximum-thickness light absorbing layer to the outermost layer, is not less than 0.34.
A delay mirror 1 includes a base 2, and an optical multilayer film 4 formed on a surface R of the base 2. The value of a group delay in a first wavelength band according to the optical multilayer film 4 is different from the value of the group delay in the second wavelength band according to the optical multilayer film 4, and the value of a group delay dispersion in the first wavelength band according to the optical multilayer film 4 and the value of the group delay dispersion in the second wavelength band according to the optical multilayer film 4 are each not less than −100 fs2 and not greater than 100 fs2. Further, the delay mirror system includes a delay mirror movement mechanism which moves the delay mirror 1 such that the number of times of reflection is changed.
A performance evaluation method for a spectacle lens comprising calculating a change rate of a first component and a change rate of a second component with a computer to calculate at least one of a distortion evaluation value and a shaking evaluation value, the first component being a component in a first direction of a prism refractive index, the second component being a component in a second direction of the prism refractive index, the distortion evaluation value being a value for evaluating a distortion regarding a spectacle lens, the shaking evaluation value being a value for evaluating a shaking regarding the spectacle lens.
[Problem] To provide an eyeglass plastic lens which has antibacterial properties and in which the occurrence of an abnormal appearance is suppressed. [Solution] This eyeglass plastic lens 1 comprises: a plastic substrate 2; and a dielectric multilayer film 4 formed on a film formation surface M of the substrate 2. The dielectric multilayer film 4 includes one or more low-refractive-index dielectric layers 6, one or more high-refractive-index dielectric layers 8, and an antibacterial layer 10. The antibacterial layer 10 is a dielectric layer containing metal ion-carrying zeolite, and is disposed closer to the atmosphere side than all the low-refractive-index dielectric layers 6 and all the high-refractive-index dielectric layers 8. The physical film thickness of the antibacterial layer 10 is less than 50 nm.
NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM (Japan)
TOKAI OPTICAL CO.,LTD. (Japan)
Inventor
Okumura Akira
Nishimoto Keiji
Inoue Chiaki
Abstract
[Problem] To provide a short wavelength selective reflection-type optical product in which deformation during manufacturing is suppressed, and a condenser whereby sensitivity of detection of light in a prescribed wavelength region can be increased. [Solution] An optical product 1 is provided with a substrate 2 and an optical multilayer film 4. The optical multilayer film 4 reflects light on a short-wavelength side and suppresses reflection of light that is more on a long-wavelength side than the light on the short-wavelength side. The first layer counted from the substrate 2 of the optical multilayer film 4 is an Al layer 10 made of Al, the second layer is a low-refractive-index layer 12 made of a low-refractive-index material, the third layer is a high-refractive-index layer 14 made of a high-refractive-index material, the fourth layer is a low-refractive-index layer 12 made of a low-refractive-index material, the fifth layer is an Al layer 10 made of Al, the sixth layer is a low-refractive-index layer 12 made of a low-refractive-index material, the seventh layer is a high-refractive-index layer 14 made of a high-refractive-index material, and the eighth layer is a low-refractive-index layer 12 made of a low-refractive-index material. A collector, wherein the optical product 1 is used.
Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):
9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2):
13a represents a monovalent hydrocarbon group or the like.
C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
C07C 69/94 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of polycyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of six-membered aromatic rings
C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
C07D 249/20 - Benzotriazoles with aryl radicals directly attached in position 2
C07D 251/24 - Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom to three ring carbon atoms
C07D 403/12 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
C08K 5/3475 - Five-membered rings condensed with carbocyclic rings
2323222 having a fine relief structure. A method for manufacturing the optical product 1 comprises: a step for forming, on the substrate 2, an Al-based manufacturing intermediate film which is aluminum, aluminum alloy, or an aluminum compound; and a step for immersing the substrate 2 provided with the Al-based manufacturing intermediate film in an aqueous solution of silica. The concentration of silica in the aqueous solution is 10 mg/L or less.
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
Eyeglass lenses useful for suppressing the progression of myopia are described. The eyeglass lenses may realize improved vision through myopia refractive correction viewability and suppression of the progression of myopia at the same time. In some examples, the eyeglass lens includes a first region for viewing a comparatively far distance disposed at an upper side of a lens, a second region disposed lower than the first region and having more positive refractive power than the first region, and a progressive zone region in which refractive power progressively changes provided between the first region and the second region. The eyeglass lens may have a progressive power surface with an addition gradient set so that addition power is gradually added from the first region to the second region on a back surface of the lens.
[Problem] To provide an optical thin film manufacturing method such that it is possible to inexpensively manufacture an optical thin film wherein a first thin film part and a second thin film part are divided. [Solution] A method for manufacturing an optical thin film 1 having a first thin film part 10, and a second thin film part 12 having a different film composition than the first thin film part 10, on a film formation surface F of a substrate 2, said method including: a step for forming the first thin film part 10 on a first film formation portion of the film formation surface F; a step for forming a removed-during-cleaning film W that has at least one among a fluff-like structure, a pyramid group-like structure, and a pinholder-like structure, and that is at least one among aluminum and an aluminum compound, on the first thin film part 10; a step for forming a second thin film part 12 on a second film formation portion on the film formation surface F differing from the first film formation portion, and on the first film formation portion on which the first thin film part 10 and the removed-during-cleaning film W have been formed; and a step for removing the removed-during-cleaning film W and the second thin film part 12 thereon via cleaning.
222 gas in a vacuum chamber in which the prism 2 is placed. A lighting cover C according to the present invention includes the surface protection film 1.
Provided are a ND filter and a spectacle ND filter that have a base made of plastic and that have excellent durability. The ND filter has a base made of plastic, and a light absorbing film having a plurality of layers is provided on at least one surface of the base. The light absorbing film includes one or more NiOx layers made of NiOx, x being not less than 0 and not greater than 1, and includes a sandwich structure portion which is provided on an opposite side of at least one of the NiOx layers from the base and in which a reverse stress layer is sandwiched between silica compound layers.
[Object]
[Object]
Provided are a plastic lens and spectacles having a high HEV cut rate represented as 100−(average transmittance in a wavelength range of not less than 400 nm and not greater than 420 nm).
[Object]
Provided are a plastic lens and spectacles having a high HEV cut rate represented as 100−(average transmittance in a wavelength range of not less than 400 nm and not greater than 420 nm).
[Solution]
[Object]
Provided are a plastic lens and spectacles having a high HEV cut rate represented as 100−(average transmittance in a wavelength range of not less than 400 nm and not greater than 420 nm).
[Solution]
A plastic lens according to the present invention includes a plastic lens base material obtained as a result of curing of a polymerizable compound having mixed therein a benzotriazole compound represented by general formula (1) below. Spectacles according to the present invention is produced by using the above-described plastic lens as a plastic spectacle lens.
[Object]
Provided are a plastic lens and spectacles having a high HEV cut rate represented as 100−(average transmittance in a wavelength range of not less than 400 nm and not greater than 420 nm).
[Solution]
A plastic lens according to the present invention includes a plastic lens base material obtained as a result of curing of a polymerizable compound having mixed therein a benzotriazole compound represented by general formula (1) below. Spectacles according to the present invention is produced by using the above-described plastic lens as a plastic spectacle lens.
G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
In the optical product bending prediction method according to the present invention, bending δ of a substrate having a film is predicted by a computer performing calculation (steps S11 to S13) of the following Expressions (A1), (B1), etc., in which a and Td are set as fitting parameters and have been optimized in each coating condition using a plurality of samples. Here, σint is intrinsic stress, Ef is a Young's modulus of a multilayer film, vf is a Poisson's ratio of the multilayer film, αf is a linear coefficient expansion of the multilayer film, αs is a linear coefficient expansion of the substrate, T is a room temperature, d is a film thickness, b is a substrate thickness, l is a radius of the substrate, Es is a Young's modulus of the substrate, and vs is a Poisson's ratio of the substrate.
In the optical product bending prediction method according to the present invention, bending δ of a substrate having a film is predicted by a computer performing calculation (steps S11 to S13) of the following Expressions (A1), (B1), etc., in which a and Td are set as fitting parameters and have been optimized in each coating condition using a plurality of samples. Here, σint is intrinsic stress, Ef is a Young's modulus of a multilayer film, vf is a Poisson's ratio of the multilayer film, αf is a linear coefficient expansion of the multilayer film, αs is a linear coefficient expansion of the substrate, T is a room temperature, d is a film thickness, b is a substrate thickness, l is a radius of the substrate, Es is a Young's modulus of the substrate, and vs is a Poisson's ratio of the substrate.
[
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)
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[Problem] To provide a light-shielding member having excellent blackness. [Solution] An optical multilayer film 4 of a light-shielding member 1 is formed by arranging four or more layers of a light absorbing layer 6 that absorbs visible light and a dielectric layer 8 that is a layer made of a dielectric. The physical film thickness of an outermost layer 10 farthest from a base material 2 is 62-91 nm (inclusive). A surface layer-side light absorption thickness C, which is the total physical film thickness of the light absorption layer(s) 6 arranged between the outermost surface layer 10 and the next outermost layer 12 closest to the outermost layer 10, among the dielectric layers 8 having a physical film thickness of 26-85 nm (inclusive), is 6-17 nm (inclusive). A base material-side light absorption thickness D, which is the total physical film thickness of the light absorption layer(s) 6 arranged between the next outermost layer 12 and the base material 2, is 60 nm or more. The specific ratio F = (C + D)/E related to the specific surface layer thickness E that is the total physical film thickness from the base material-side thickest light absorption layer 18, which is the layer having the largest physical film thickness among the light absorbing layers 6 arranged between the next outermost layer 12 and the base material 2, to the outermost layer 10 is 0.34 or more.
[Problem] To provide a delay mirror and a delay mirror system, the delay mirror implementing a delay optical system that is able to delay the optical path of light to be delayed and the optical path of light having a wavelength different therefrom not separately and coaxially, and is simple and easily installed and fine-tuned. [Solution] A delay mirror 1 is provided with a base material 2 and an optical multilayer film 4 formed on a surface R of the base material 2. The value of a group velocity delay GD in a first wavelength range related to the optical multilayer film 4 differs from the value of the group velocity delay GD in a second wavelength range related to the optical multilayer film 4, and the value of group velocity delay dispersion GDD in the first wavelength range related to the optical multilayer film 4 and the value of the group velocity delay dispersion GDD in the second wavelength range related to the optical multilayer film 4 are both -100 fs2to 100 fs2 inclusive. This delay mirror system is provided with a delay mirror moving mechanism for moving the delay mirror 1 such that the number of times of reflection changes.
[Problem] To provide a performance evaluation method for a spectacle lens and a program, the performance evaluation method being capable of, regarding spectacle lenses including a progressive power lens, appropriately evaluating quantitative performance related to distortion and/or shake. [Solution] In a performance evaluation method for a spectacle lens according to the present invention, with respect to the design of a spectacle lens GL (step S1), the change rate of a first component that is a component in a first direction of a prism refractive index, and the change rate of a second component that is a component in a second direction of the prism refractive index are calculated by a computer (performance evaluation device 1), thereby calculating a distortion evaluation value that is a value for evaluating distortion related to the spectacle lens GL and/or a shake evaluation value that is a value for evaluating shake related to the spectacle lens (step S2).
A spectacle lens includes an optical multilayer film formed on at least one surface of a base. The spectacle lens is formed such that, in a reflectance distribution in a visible region, maximal values appear in a range of wavelengths that are not less than 440 nm and not greater than 460 nm and in a range of wavelengths that are not less than 620 nm and not greater than 640 nm. A blue light ray cutting rate calculated by using a calculation formula described in Japanese Industrial Standards “JIS T7333 Appendix C” is not less than 7% (preferably not less than 8%) in the spectacle lens. A YI value is not greater than 6 in the spectacle lens.
[Problem] To provide: a plastic lens which has a higher HEV blocking rate that is expressed by formula 100 - (average transmittance in wavelength range of from 400 nm to 420 nm (inclusive)); and eye glasses. [Solution] A plastic lens according to the present invention comprises a plastic lens base material which is obtained by curing a polymerizable compound that is mixed with a benzotriazole compound represented by general formula (1). Eye glasses according to the present invention are produced using the above-described plastic lens as a plastic eye glass lens.
[Problem] To provide: a negative-diopter eyeglass lens blank with which there is little sense of oddness in appearance when viewed by a third party and for which the processing steps are few; an eyeglass lens obtained by processing the lens blank; and a method of processing a negative-diopter eyeglass lens blank. [Solution] A globular shape 19 that is longer horizontally than vertically is set onto a lens reverse-face side of a material block, and on the reverse face, rendered are: a concave-surface shape (first shape) that exhibits, for the wearer, optical performance as a prescribed negative-strength lens; and another shape (second shape) that is composited with the first shape and that has a curved geometry in which the ridge line 18 is not concaved outward inside the temporal sides of the globular shape and outside the lens-use area, the curvature of the ridge-line 18 curve being greatest near the middle of the top-to-bottom span of the globular shape 19, and the thickness of the shape gradually thinning from the ridge line 18 towards the lens rim.
An optical plastic product has an optical multilayer film formed on one or both surfaces of a base made of plastic, directly or via an intermediate film, wherein the optical multilayer film includes a tensile-stress high-refractive-index layer having tensile stress as internal stress and made of a high refractive index material, and a low refractive index layer made of a low refractive index material, and the tensile-stress high-refractive-index layer is disposed with a physical film thickness of not greater than 10 nm, in a first layer as counted from the base side in the optical multilayer film.
[Problem] To provide a spectacle lens which has a reduced degree of yellowness while protecting the eye from blue light rays, and spectacles. [Solution] In this spectacle lens, an optical multilayer film is formed on at least one surface of a base material. The reflectance distribution of the spectacle lens in the visible region has a maximum value in the wavelength region of 440 nm to 460 nm, and a maximum value in the wavelength region of 620 nm to 640 nm. Furthermore, the blue light cutting rate of the spectacle lens calculated using the formula described in "JIS T7333 Appendix C" of the Japanese Industrial Standards is 7% or greater (preferably 8% or greater). The spectacle lens is also configured so as to have a YI value of 6 or less.
A plastic spectacle lens includes at least a plastic base. In the plastic spectacle lens, a difference between a highest transmittance and a lowest transmittance for light in a range of wavelengths of not less than 400 nm and not greater than 780 nm, is not greater than 10 points, and an internal transmittance of the base for light in a range (visible range) of wavelengths of not less than 380 nm and not greater than 780 nm is not less than 80% over the entirety of the range of the wavelengths.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
G02B 1/14 - Protective coatings, e.g. hard coatings
Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):
9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2):
13a represents a monovalent hydrocarbon group or the like.
C07D 249/20 - Benzotriazoles with aryl radicals directly attached in position 2
C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
C07C 69/94 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of polycyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of six-membered aromatic rings
C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
C07D 251/24 - Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom to three ring carbon atoms
C07D 403/12 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
C08K 5/3475 - Five-membered rings condensed with carbocyclic rings
Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):
13a represents a monovalent hydrocarbon group or the like.
C07D 403/12 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
C08K 5/3475 - Five-membered rings condensed with carbocyclic rings
C08L 101/00 - Compositions of unspecified macromolecular compounds
C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
C07C 69/94 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of polycyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of six-membered aromatic rings
C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
C07D 249/20 - Benzotriazoles with aryl radicals directly attached in position 2
C07D 251/24 - Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom to three ring carbon atoms
48.
Additive for imparting ultraviolet absorbency and/or high refractive index to matrix, and resin member using same
Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):
13a represents a monovalent hydrocarbon group or the like.
C08K 5/3475 - Five-membered rings condensed with carbocyclic rings
C07D 403/12 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
C08L 101/00 - Compositions of unspecified macromolecular compounds
C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
C07C 69/94 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of polycyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of six-membered aromatic rings
C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
C07D 249/20 - Benzotriazoles with aryl radicals directly attached in position 2
C07D 251/24 - Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom to three ring carbon atoms
49.
Eye movement measuring device and eye movement analysis system
KABUSHIKI KAISHA TOKAI TIKA DENKI SEISA KUSHO (Japan)
Inventor
Suzuki, Eiji
Hirata, Yutaka
Nakamura, Shogo
Ueda, Shinichi
Yamamoto, Masaya
Abstract
An eye movement measuring device for detecting an eyeball-state/movement including: an eyeball photographing device configured to take a photograph of an eyeball; and an eye movement detecting unit configured to detect eye movement based on eyeball image as a photograph taken with the eyeball photographing device, the eyeball photographing device including an eyeball illuminating unit configured to illuminate an eyeball of a subject including a driver with illumination light, an eyeball image imaging unit configured to obtain eyeball image as a result of imaging the illuminated eyeball, and an arranging unit configured such that, when the eyeball photographing device is worn by the subject, the eyeball illuminating unit is arranged in a position where the eyeball can be irradiated with the illumination light, and the eyeball image imaging unit is arranged in a position where the eyeball image can be obtained as a result of the imaging.
G08B 7/06 - Signalling systems according to more than one of groups Personal calling systems according to more than one of groups using electric transmission
A61B 5/16 - Devices for psychotechnicsTesting reaction times
A61B 5/18 - Devices for psychotechnicsTesting reaction times for vehicle drivers
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
G06F 3/0346 - Pointing devices displaced or positioned by the userAccessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
B60K 28/06 - Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
B60W 50/14 - Means for informing the driver, warning the driver or prompting a driver intervention
50.
Optical product, plastic spectacle lens, and spectacles
[Problem] To provide an optical plastic product having desired properties such as anti-reflective properties and having excellent adhesion and external stress resistance. [Solution] The present invention provides an optical plastic product comprising an optical multilayer film formed directly or via an intermediate film on one surface or both surfaces of a plastic substrate, wherein the optical multilayer film includes: a tensile stress/high-refractive index layer made of a high-refractive index material having tensile stress as internal stress; and a low-refractive index layer made of a low-refractive index material, and the tensile stress/high-refractive index layer is disposed as the first layer of the optical multilayer film from the substrate side in a state in which the physical film thickness is 10 nm or less.
[Problem] To provide a plastic spectacle lens and spectacles that have high transmittance in almost the entire range of the wavelength range of visible light, that is, a visible range, produce an extremely small color change when being worn since colors when being worn and when not being worn are similarly recognized, and have excellent handleability and comfort. [Solution] A plastic spectacle lens includes at least a plastic base material. In such a plastic spectacle lens, the difference between a maximum transmittance and a minimum transmittance with respect to light in a wavelength range of 400-780 nm inclusive is 10 points or less, and the internal transmittance of the base material with respect to light in a wavelength range (visible range) of 380-780 nm inclusive is 80% or more in the entire range.
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES (Japan)
TOKAI OPTICAL CO., LTD. (Japan)
Inventor
Inui, Koji
Takeshima, Yasuyuki
Suzuki, Masaya
Kumagai, Naoya
Abstract
A more practical method for evaluating an inhibitory circuit applicable to a living body, and the use thereof. Herein the action of an inhibitory circuit on an excitatory circuit is evaluated on the basis of attenuation of the brain activity produced by activation of an excitatory circuit by the input of an inhibitory circuit by performing a step for inputting an inhibitory circuit by applying a second trigger in advance of a first trigger to an excitatory circuit activated by a first trigger which is a stimulus or challenge.
To provide a plastic lens which can absorb light with a wavelength of 400 to 420 nm with sufficiently high efficiency but is reduced in the absorption of light with a wavelength of around 420 nm or longer, is less affected by harmful light, suppresses yellow coloration and therefore has excellent appearance, suppresses yellowish discoloration over time, and has excellent heat resistance, light resistance, and also optical performance, particularly an excellent Abbe's number.
The plastic lens is characterized by containing an ultraviolet absorbing agent represented by the following formula (I):
9 represents a monovalent sulfur-containing group represented by the following formula (i):
12 is 30 or less; m represents an integer of 0 or 1; and n represents an integer of 0 to 3)), and a resin material.
G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
C08K 5/36 - Sulfur-, selenium-, or tellurium-containing compounds
C07D 249/20 - Benzotriazoles with aryl radicals directly attached in position 2
A spectacle lens manufacturing system includes resin material filling means which fills a lens mold with a lens material (heat-curable resin material), and at least a portion of the lens mold is formed by a three-dimensional printer. The lens mold includes a front lens mold having a rear surface that defines a front surface of a spectacle lens, a rear lens mold having a front surface that defines a rear surface of the spectacle lens, and a side peripheral lens mold having an inner surface that defines a side periphery of the spectacle lens. The side peripheral lens mold is formed by the three-dimensional printer.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 80/00 - Products made by additive manufacturing
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
57.
EYE MOVEMENT MEASURING DEVICE AND EYE MOVEMENT ANALYSIS SYSTEM
[Problem] To provide: a compact eye movement measuring device that can be easily worn and removed by a driver or the like and is capable of measuring eye movement under a stable condition while reducing the influence of ambient light; and an eye movement analysis system for performing a variety of analyses, such as analysis of the state of consciousness of a driver or the like, on the basis of the eye movement acquired by the eye movement measuring device. [Solution] An eye movement analysis system S is provided with an eye photographing device 1, an eye movement detection means 2, and a human state detection means 3. The eye photographing device 1 is provided with: a pair of over-glasses 10; an eye illumination means 11 for illuminating eyes with non-visible light; an eye imaging means 12 for capturing an image of the eyes illuminated by the eye illumination means 11; a reflection means 13 for guiding the non-visible light to the eyes and reflecting eye images therefrom; and an arrangement means for arranging the eye illumination means 11, the eye imaging means 12, and the reflection means 13 at predetermined positions on a pair of glasses G.
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
A61B 5/18 - Devices for psychotechnicsTesting reaction times for vehicle drivers
B60K 28/06 - Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/0346 - Pointing devices displaced or positioned by the userAccessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
58.
OPTICAL PRODUCT, PLASTIC EYEGLASS LENS, AND EYEGLASSES
[Problem] To provide, inter alia, an optical product in which reflectance is relatively increased with respect to both near-infrared rays and light of a prescribed wavelength region within the visible light region starting from blue light, and in which reflectance is reduced with respect to light in other visible light regions. [Solution] This optical product is provided with an optical multilayer film formed on one or both surfaces of a substrate either directly or with an intermediate film interposed therebetween. In the optical multilayer film, a total of nine layers are laminated such that SiO2 layers and ZrO2 layers are alternatingly disposed, a SiO2 layer being the first layer away from the substrate. Taking λ (500 nm) to be the design wavelength, the optical film thickness of the first, SiO2 layer is 0.120 × λ/4 or lower, the optical film thickness of the second, ZrO2 layer is 0.400 × λ/4 or higher, the optical film thickness of the third, SiO2 layer is 0.230 × λ/4 or higher, and the optical film thickness of the seventh, SiO2 layer is 0.450 × λ/4 or higher.
[Problem] To provide an ND filter which has a plastic base material and exhibits excellent durability; and an ND filter for eyeglasses. [Solution] An ND filter comprising a plastic base material is plastic and a light-absorbing film having a plurality of layers disposed on at least one surface of the base material. The first layer (initial layer) from the base material side of the light-absorbing film is a SiO2 layer or an Al2O3 layer. In addition, the light-absorbing film contains at least one NiOx layer comprising NiOx (x is 0-1), and at least one of the NiOx layers is sandwiched between a base material-side adjacent layer, which is the layer adjacent to the NiOx layer on the base material side, and an opposite-side adjacent layer, which is the layer adjacent to the NiOx layer on the opposite side from the base material side and is formed from a material that is different from that of the base material-side adjacent layer.
Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I):
9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2):
13a represents a monovalent hydrocarbon group or the like.
C08L 101/00 - Compositions of unspecified macromolecular compounds
C07D 403/12 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
C07C 49/84 - Ketones containing a keto group bound to a six-membered aromatic ring containing ether groups, groups, groups, or groups
C07C 69/94 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of polycyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of six-membered aromatic rings
C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
C07D 249/20 - Benzotriazoles with aryl radicals directly attached in position 2
C07D 251/24 - Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hydrogen or carbon atoms directly attached to at least one ring carbon atom to three ring carbon atoms
A displacement prevention coating agent is provided which can prevent a displacement in lens processing, which is soluble in water and which exhibits a transparent appearance at least after being cured. The displacement prevention coating agent may coat the front and rear surfaces of a lens so that when cutting processing is performed on an end surface of the lens, a holding position of the front and rear surfaces of the lens held by a chuck device is prevented from being displaced. A water-repellent coat layer may be formed as a membrane such that the end surface has a shape corresponding to a frame. The displacement prevention coating agent may be formed of an aqueous solution whose main components are a hydrophilic resin, a surfactant having a perfluoro group and an emulsion.
D06P 1/44 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
C09D 129/04 - Polyvinyl alcoholPartially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
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
[Problem] To provide a spectacle lens manufacturing system with which portions that are wasted as a result of the creation of surfaces such as aspherical surfaces and globe-shape processing are eliminated or reduced, for which the management, selection, and the like of round lenses or the mold therefor is easy, and which reduces processing labor. [Solution] A spectacle lens manufacturing system 1 includes a resin material filling means 43 for filling a lens material (thermosetting resin material) into a lens mold 42. The lens mold 42 is provided with a rear lens mold 41 the front surface of which stipulates the rear surface of a spectacle lens 50. The rear lens mold 41 includes a rear lens mold base body 24. Provided is a 3D printer 18 that adds an aspherical surface adding section 35 to a front surface 24a of the rear lens mold base body 24. The front surface of the rear lens mold 41 is formed by the front surface 24a of the rear lens mold base body 24 to which the aspherical surface adding section 35 was added.
[Problem] To provide an optical product or the like that is capable of achieving both excellent anti-reflectivity and high heat-resistance while having a simple configuration. [Solution] An optical product provided with an optical multilayer film formed on one or both sides of a substrate directly or via an intermediate layer. The optical multilayer film has five or more layers of a low-refractive-index layer and a high-refractive-index layer layered in alternating fashion. The high-refractive-index layer includes a zirconium dioxide layer in which the atmospheric refractive index related to light have a wavelength of 500 nanometers is 2.11 or higher. The total physical thickness of the zirconium dioxide layers having an atmospheric refractive index of 2.11 or higher is 20% or more of the overall physical thickness of the optical multilayer film.
[Problem] To provide a spectacle lens manufacturing system which makes it possible that an accurate surface shape is obtained, lens shape processing produces few useless portions, and the lens shape processing takes little time and effort. [Solution] A spectacle lens manufacturing system 1 is provided with a lens mold 42 into which a lens material (thermosetting resin material) is filled, and a fluid resin discharge means (three-dimensional printer 18) which discharges curable fluid resin, and the fluid resin discharge means forms at least part of the lens mold 42 by discharging the fluid resin. The lens mold 42 comprises a front lens mold 21 having a back surface 21a defining the front surface of a spectacle lens 50, a back lens mold 24 having a front surface 24a defining the back surface of the spectacle lens 50, and a side peripheral lens mold 33 having an inner surface defining the side periphery of the spectacle lens 50, and the fluid resin discharge means forms a portion including at least part of the inner surface of the side peripheral lens mold 33.
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES (Japan)
TOKAI OPTICAL CO., LTD. (Japan)
Inventor
Inui Koji
Takeshima Yasuyuki
Suzuki Masaya
Kumagai Naoya
Abstract
Provided are a more practical method of evaluating an inhibitory circuit applicable to a living body and the use thereof. Herein the action of an inhibitory circuit on an excitatory circuit is evaluated on the basis of attenuation of the brain activity produced by activation of an excitatory circuit by the input of an inhibitory circuit by performing a step for inputting an inhibitory circuit by applying a second trigger in advance of a first trigger to an excitatory circuit activated by a first trigger which is a stimulus or challenge.
[Problem] To provide a plastic lens which can absorb light having a wavelength of 400 to 420 nm with high efficiency but is reduced in the absorption of light having a wavelength of around 420 nm or longer, is less affected by harmful light, rarely undergoes yellow coloration and therefore has excellent appearance, rarely undergoes yellowish discoloration over time, and has excellent heat resistance, light resistance and optical performance, particularly an excellent Abbe's number. [Solution] The plastic lens is characterized by comprising: an ultraviolet ray absorber represented by formula (I) (wherein R1 to R8 independently represent a monovalent group such as a hydrogen atom; and R9 represents a monovalent sulfur-containing group represented by formula (i) (wherein R10 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms or the like; R11 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms or the like; R12 represents a monovalent hydrocarbon group having 1 to 20 carbon atoms; the total number of carbon atoms in R10, n R11's and R12 is 30 or less; m represents an integer of 0 or 1; and n represents an integer of 0 to 3)); and a resin material.
G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
C08K 5/36 - Sulfur-, selenium-, or tellurium-containing compounds
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
2. The high refractive index layers are formed by using a material where a refractive index for light having a wavelength of 500 nm is greater than or equal to 2.145. When a layer closest to the base is a first layer, a fifth layer is one of the low refractive index layers, and a physical film thickness of the fifth layer is greater than or equal to 145 nm and not greater than 165 nm. A total of optical film thicknesses of a fourth layer, the fifth layer, and a sixth layer is greater than or equal to 1.3 λ and not greater than 1.5 λ.
Glasses-lens assessment method, glasses-lens design method using assessment method, and calculation method for visual-performance characteristics of test subject when viewing object through lens
Inter-University Research Institute Corporation National Institutes of Natural Sciences (Japan)
Inventor
Suzuki, Masaya
Kumagai, Naoya
Inui, Koji
Takeshima, Yasuyuki
Kakigi, Ryusuke
Abstract
The invention provides an evaluation method capable of objectively evaluating average visual perception for a comparatively long period of time when a subject looks through an eyeglass lens to be evaluated, time-dependent change in visual perception, and visual perception when looking with both eyes, and the invention provides a design method, and the invention provides a calculation method for calculating characteristics of visual perception of the subject when viewing an object through a lens.
[Solution] A subject is allowed to wear a lens to be evaluated, the subject is allowed to induce brain activity by allowing the subject to view a changing visual stimulus object that induces periodic brain activity through the lens to be evaluated, a change in faint electric current caused by the brain activity is time-dependently recorded as a change in a magnetic field (magnetic flux density) by use of a magnetoencephalograph, one or more among an amplitude, a power value, and a phase in a frequency that is an inverse number of a period of the periodic brain activity is or are calculated through fast Fourier analysis of the waveform, and the lens to be evaluated and the characteristic of visual perception of the subject are evaluated based on a magnitude of an amplitude or of a power value obtained above or based on a slowness/fastness of a phase obtained above.
A61B 5/0484 - Electroencephalography using evoked response
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/04 - Measuring bioelectric signals of the body or parts thereof
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/036 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters for testing astigmatism
A61B 3/08 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing binocular or stereoscopic vision, e.g. strabismus
G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
An optical product (spectacle lens) according to the present invention includes a base having a convex surface and a concave surface, and an optical multilayer film formed on at least the concave surface of the base. The optical multilayer film has, in total, six layers in which a first layer is closest to the base, and a layer formed of zirconium dioxide and a layer formed of silicon dioxide are alternately layered such that the first layer is the layer formed of zirconium dioxide. A physical film thickness of a fourth layer formed of silicon dioxide is greater than or equal to 10 nm and not greater than 22 nm. A sum of physical film thicknesses of the first layer formed of zirconium dioxide and a second layer formed of silicon dioxide is greater than or equal to 35 nm and not greater than 45 nm.
An additive for imparting ultraviolet absorptivity or an additive for imparting a high refractive index is provided which exhibits excellent compatibility with a resin serving as a matrix, and which is capable of maintaining high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorptivity and a high refractive index can be realized in one kind of additive. This additive is represented by formula (I) (in formula (I), at least one from among R1a-R9a is a monovalent sulfur-containing group represented by formula (i-1) or formula (i-2) (in formulae (i-1) and (i-2), R10a-R12a represent divalent hydrocarbon groups or the like, and R13a represents a monovalent hydrocarbon group or the like)).
[Problem] To provide a deviation-preventing coating material with which it is possible to prevent deviations when machining lenses, which is water-soluble, and which exhibits a transparent appearance, at least after curing. [Solution] Provided is a deviation-preventing coating material which is coated onto the front and rear surfaces of a lens to prevent deviations in holding position on the front and rear surfaces of a lens which is held by a chuck device when machining the edge of a lens on which a water repellent coating layer has been formed, for example, to obtain a shape that conforms to a frame. The coating material comprises an aqueous solution having, as the main components thereof, a hydrophilic resin, a surfactant having a perfluoro group, and an emulsion. The coating material exhibits a transparent appearance at least after film formation. By using such a deviation-preventing coating material, when holding the front and rear surfaces of a lens onto which a water-repellent coating layer has been formed, for example, by holding the lens with a chuck device by adhesive tape, when machining this lens there is a reduced likelihood of deviations in holding position of the lens caused by the adhesive tape.
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
[Problem] To provide an optical product having a higher level of durability, while having adequate antireflection performance. [Solution] In this optical product, an optical multilayer film is formed on one or both surfaces of a base. The optical multilayer film has a structure of 11 or more layers, in which silicon oxide films and silicon nitride films are laminated in alternating fashion, with a silicon oxide film being the outermost layer. The physical film thickness of the outermost layer is 30 to 75 nm inclusive, and the physical film thickness of a first adjacent layer, which is the layer adjacent to the outermost layer, is 2 to 10 nm.
[Problem] To provide an optical product or the like which exhibits reflection-prevention performance while entailing a small number of material types for film formation and involving a simple film configuration, resulting in easy film formation, low cost, and sufficient heat-resistance. [Solution] An optical product obtained by providing one or both surfaces of a substrate with an optical multilayer film having a five-layered structure obtained by alternatingly layering SiO2 and ZrO2, wherein given that the layer nearest the substrate in the optical multilayer film is the first layer, the quotient obtained by dividing the physical film thickness of the fourth layer, which is ZrO2, by the physical film thickness of the second layer, which is also ZrO2, is 1-4, inclusive.
[Problem] To provide an optical product or the like which exhibits higher reflection-prevention performance in a visible-light region, lower transmissivity of near-infrared light, lower cost, and higher durability. [Solution] An optical product having, on one or both surfaces of a substrate, an optical multilayer film having a seven-layered structure obtained by alternatingly layering a low-refractive-index layer and a high-refractive-index layer, wherein: the low-refractive-index layer is formed by using SiO2; the high-refractive-index layer is formed by using a material for which the refractive index of light having a wavelength of 500nm is 2.145 or higher; given that the layer nearest the substrate is the first layer, the physical film thickness of the fifth layer, which is one of the low-refractive-index layers, is 145-165nm, inclusive; and the sum of the optical film thicknesses (λ=500nm) of the fourth through sixth layers is 1.3-1.5λ, inclusive.
An optical product includes an optical multilayer film on an optical product base, a color of reflected light of the optical multilayer film satisfies a condition of 0.27≦x≦0.31 and 0.30≦y≦0.36 in a chromaticity diagram (x,y,Y) of a CIE color system, reflectance is always 1 percent or less in a wavelength range from 420 nanometers (nm) to 680 nm, both inclusive, Y is 0.5 percent or less, and the optical multilayer film has a total of seven layers, in which a first layer is counted from an optical product base side, and odd layers are low refractive index layers and even layers are high refractive index layers, and an optical film thickness of a sixth layer is greater than or equal to 0.530λ, and not greater than 0.605λ when λ represents a design wavelength (any value in a range from 480 nm to 520 nm, both inclusive).
Method for assessing spectacle lens by evoked activity in visual cortex of brain or the like, and method for designing spectacle lens using said method for assessment
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES (Japan)
Inventor
Suzuki, Masaya
Nagata, Yuko
Inui, Koji
Takeshima, Yasuyuki
Kakigi, Ryusuke
Abstract
[Problem] To provide an evaluation method for evaluating spectacle lenses that is capable of objectively evaluating spectacle lenses suitable for a user by measuring brain activity, and a design method for designing spectacle lenses using the evaluation method.
[Solution] A subject is allowed to wear to-be-evaluated lenses, and the subject is allowed to visually observe a visual stimulus object used to evoke an activity of a specific part of the visual cortex of the brain through the to-be-evaluated lenses, and an evoked activity of the specific part of the brain's visual cortex when the visual stimulus object is visually observed by the to-be-evaluated lenses is measured by an electroencephalograph or by a magnetoencephalograph, and the spectacle lenses are evaluated based on time (latency) from when a visual stimulus is received till when a change is caused thereby or based on the magnitude (amplitude) of activity.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
80.
GLASSES-LENS ASSESSMENT METHOD, GLASSES-LENS DESIGN METHOD USING ASSESSMENT METHOD, AND CALCULATION METHOD FOR VISUAL-PERFORMANCE CHARACTERISTICS OF TEST SUBJECT WHEN VIEWING OBJECT THROUGH LENS
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES (Japan)
Inventor
Suzuki Masaya
Kumagai Naoya
Inui Koji
Takeshima Yasuyuki
Kakigi Ryusuke
Abstract
[Problem] To provide: an assessment method capable of objectively assessing the average visual performance over a comparatively long period of time when a test subject looks through a glasses lens to be assessed, changes over time in this visual performance, and visual performance when looking with both eyes; a design method; and a calculation method for the visual-performance characteristics of the test subject when viewing an object through a lens. [Solution] An assessment of a lens to be assessed and the visual-performance characteristics of a test subject is made by: having a test subject wear a lens to be assessed; inducing brain activity in the test subject by having the test subject observe, through the lens to be assessed, a changing visual stimulus which induces brain activity having periodicity; recording over time the slight changes in electric current caused by this brain activity as a magnetic field (magnetic flux density) by using a magnetoencephalograpic meter; analyzing the waveform thereof by using high-speed Fourier analysis, and calculating one or more of the amplitude, power value and phase in the frequency which is the inverse of the period of the brain activity having periodicity; and assessing by using the size of the obtained amplitude or power value, or the speed of the obtained phase.
[Problem] To provide an optical product and a spectacle lens equipped with an optical multilayer film that has sufficiently reduced ultraviolet reflectance and visible light reflectance and is capable of adjusting the colors of reflected light having a small intensity with a simple configuration. [Solution] An optical product (spectacle lens) according to the present invention includes a base material having a convex surface and a concave surface, and an optical multilayer film formed at least on the concave surface of the base material. The optical multilayer film includes a zirconium dioxide layer and a silicon dioxide layer which are alternately laminated sequentially from a first layer closest to the base material to form a six-layered film in total. The physical thickness of the silicon dioxide layer as a fourth layer is within a range of 10 nm to 22 nm, and the sum of the physical thicknesses of the zirconium dioxide layer as a first layer and the silicon dioxide layer as a second layer is within a range of 35 nm to 45 nm.
An optical product according to the present invention includes a transparent base material, and a multilayer film including a dielectric film and an ITO film. The multilayer film is formed on one face or two faces of the transparent base material. The physical thickness of the ITO film is not less than 3 nanometers and not greater than 7 nanometers. The ITO film can be formed by vapor deposition with plasma treatment.
C23C 16/513 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using plasma jets
G02B 1/116 - Multilayers including electrically conducting layers
B32B 9/00 - Layered products essentially comprising a particular substance not covered by groups
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
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
83.
Antifog optical article and manufacturing method thereof
[Problem to be Solved]
To provide: an antifog optical article wherein a suitable water-repellent layer is formed in the process of application of antifog coating having a water-absorbing layer consisting primarily of urethane or acrylic resin having a polyoxyethylene chain on a base material; and a manufacturing method of the antifog optical article.
2O)n- is formed on a surface of a glass or plastic base material, a water-repellent layer consisting primarily of at least one of amino-modified silicone and mercapto-modified silicone is formed on a surface of the water-absorbing layer, and a contact angle with respect to water on a surface of the water-repellent layer is set equal to or larger than 100 degrees.
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
G02B 1/12 - Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
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
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
[Problem] To provide an optical article for receiving and emitting infrared rays and an infrared receiving and emitting unit capable of preventing malfunction even when using infrared rays that pass diagonally through while exhibiting the color white. [Solution] A sheet-like optical article (1) for receiving and emitting infrared ray includes a base body (2) and a mirror film (4) formed on the surface of the base body (2). A diffusion film is employed for the base body (2) (diffusion base body) in the optical article (1). The diffusion film diffuses visible light with at least one of the surfaces formed as a matte surface (6) (diffusion layer). The mirror film (4) (dielectric multilayered film) which transmits infrared rays and reflects visible light is formed on at least any one of the surfaces of such base body (2).
[Problem] To provide an optical product or a plastic eyeglass lens whereby visible light transmissibility is high, reflectivity is suitably reduced, and reflected color is highly unlikely to be noticeable. [Solution] Provided is an optical product wherein an optical multilayered film is disposed upon an optical product substrate, wherein: a color of reflected light in the optical multilayered film satisfies, in a CIE color scheme chromaticity diagram (x, y, Y), the conditions 0.27 ≤ x ≤ 0.30 and 0.30 ≤ y ≤ 0.36, and moreover, in a wavelength range of 420-680nm, the reflectivity is a constant 1% or less, and the Y is 0.5% or less. In addition, the optical multilayer film has a total of seven layers, with the optical product substrate side of the optical multilayer film being a first layer, odd-numbered layers being low-refractive index layers, even-numbered layers being high-refractive index layers, and, with λ being a design wavelength (a value within the range of 480-520nm), the thickness of the sixth optical film layer is 0.530λ-0.605λ.
In an optical component obtained by forming an optical multilayer film (13) on a surface of a substrate (11) by vapor deposition, a material of a high refractive index layer in the optical multilayer film (13) is made of niobium-containing titanium suboxide, whereby a thin film formed by vapor deposition of the niobium-containing titanium suboxide can be made to have improved conductivity though being in an amorphous state. This makes it possible to achieve high antistatic performance, without performing reheating treatment for increasing crystallinity for the purpose of increasing the conductivity, and without redesigning vapor deposition equipment for handling three types of materials.
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
87.
METHOD FOR ASSESSING SPECTACLE LENS BY EVOKED ACTIVITY IN VISUAL CORTEX OF BRAIN OR THE LIKE, AND METHOD FOR DESIGNING SPECTACLE LENS USING SAID METHOD FOR ASSESSMENT
INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES (Japan)
Inventor
Suzuki Masaya
Nagata Yuko
Inui Koji
Takeshima Yasuyuki
Kakigi Ryusuke
Abstract
[Problem] To provide a method for assessing a spectacle lens with which a spectacle lens suitable for the user can be objectively assessed by measuring brain activity, and a method for designing a spectacle lens using said method for assessment. [Solution] A subject is made to wear a lens being assessed and to look, through the lens being assessed, at an intended visual stimulus for evoking activity in a specific site of the visual cortex of the brain. Evoked activity of the specific site of the visual cortex of the brain when the intended visual stimulus is being looked at through the lens being assessed is measured by an electroencephalograph or a magnetoencephalograph, and the spectacle lens is assessed on the basis of the time (latent time) from when the visual stimulus is received to when a change therein takes place, or on the basis of the magnitude (amplitude) of activity.
[Problem] To provide: an eyeglass lens that has a wider range of clear vision and is easier to use in relation to an eyeglass lens in which the spherical power can be changed by arranging two lens elements so as to overlap each other in the front-to-rear direction and by relatively sliding the lens elements with respect to each other; and bifocal eyeglasses equipped with such lenses. [Solution] Disclosed is an eyeglass lens in which a first lens element and a second lens element are arranged in parallel in the front-to-rear direction such that the optical axes thereof are parallel, and in which the S power can be changed by relatively moving the lens elements in opposite directions along a direction approximately orthogonal to the optical axes thereof. In this eyeglass lens: a curve expressed by the equation below is compounded, as an additional amount of sag, onto the object-side surface of the first lens element, which is arranged on the outside, and the eyeball-side surface of the second lens element, which is arranged on the inside; the two lens elements are arranged in parallel so as to match the x axis direction and the y axis direction of each lens element; the two lens elements can relatively move in opposite directions only along the x axis direction; and the front surface and/or the back surface of the respective lens elements are/is made aspherical. g(x,y)=(A/6)x3+(A/2)xy2 (wherein A≠0)
[Problem] To provide an optical product, which is low-cost and easily designed, and has extremely excellent optical characteristics, while being provided with an antistatic function, and to provide a method for manufacturing the optical product. [Solution] In this optical product, a multilayer film including a dielectric material film and an ITO film is formed on one surface or both the surfaces of a transparent base material. A physical film thickness of the ITO film is 3-7 nanometers. The ITO film can be formed by vapor deposition with plasma processing.
An optical product includes an optical multilayer film on an optical product base. A color of reflected light of the optical multilayer film satisfies both of the following conditions in a chromaticity diagram (x,y,Y) of a CIE color system: [1] 0.27≦x≦0.30 and [2] 0.30≦y≦0.36. The optical product base is a spectacle plastic lens base.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
91.
Plastic optical product and plastic lens for spectacles
In a plastic optical product, an optical multilayer film having a seven layer structure is formed on a surface of a plastic substrate directly or with an interlayer interposed therebetween. In the seven layer structure of the optical multilayer film, a layer on the plastic substrate side is a low refractive index layer, and the low refractive index layers and high refractive index layers are alternately disposed. At least the high refractive index layer at the center of the seven layer structure contains substoichiometric titanium oxide. In a plastic lens for spectacles belonging to such a plastic optical product, the plastic substrate is a plastic lens substrate for spectacles, the interlayer is a hard coat film, and the optical multilayer film is an anti-reflective film.
G02C 7/16 - Shades, shieldsObturators, e.g. with pinhole, with slot
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
92.
HAZE-PROOF OPTICAL ARTICLE AND METHOD FOR PRODUCING SAME
[Problem] To provide a haze-proof optical article and a method for producing the same, in which the haze-proof optical article has a water-absorbing layer that is formed on a substrate and the primary component of which is a urethane or acrylic resin having a polyoxyethylene chain, and a water-repelling layer that is ideal for haze-proof coating that is formed on the water-absorbing layer. [Solution] A water-absorbing layer the primary component of which is a urethane or acrylic resin having a polyoxyethylene chain represented by -(CH2CH2O)n- is formed on the surface of a glass or plastic substrate, and a water-repelling layer the primary component of which is at least one selected from an amino-modified silicone or mercapto-modified silicone is formed on the surface of the water-absorbing layer. The water contact angle of the water-repelling surface is set to 100 degrees or greater.
G02B 1/10 - Optical coatings produced by application to, or surface treatment of, optical elements
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
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
An antifouling film is introduced on a base of an optical product such that (1) an absolute value of a charged electrostatic potential is 2.00 kV or less, and (2) a surface peel strength is 0.10 N/19 mm or less. A hard coat film and an optical multilayer film are placed between the base of the optical product and the antifouling film. An antireflection film is provided as the optical multilayer film, and a base of a spectacle plastic lens is provided as the base of the optical product.
An optical member includes a substoichiometric titanium oxide film formed by depositing substoichiometric titanium oxides in a vacuum chamber into which an oxygen gas for adjusting a vacuum is introduced. In the optical member, the film forming pressure p (Pa) in the vacuum chamber and the optical film thickness (a refractive index of 2.50, a wavelength of 500 nm) of the substoichiometric titanium oxide film have relations of (1) p≧0.005, (2) optical film thickness ≦0.500λ, and (3) optical film thickness ≧(0.001exp(905.73p)−0.050)λ where exp is an exponential function with e as the base of the natural logarithm.
[Problem] To provide an optical product and a plastic lens for eyeglasses having a high degree of visible light penetration and sufficiently minimized reflectivity, with reflected color being highly unnoticeable. [Solution] Provided is an optical product which disposes an optical multilayered film on an optical product substrate. Colors of reflected light in the optical multilayered film satisfy all conditions (1) 0.27 ≤ x ≤ 0.30 and (2) 0.30 ≤ y ≤ 0.36 in a CIE color system chromaticity diagram (x, y, Y). Additionally, the optical product substrate shall be a plastic lens substrate for eyeglasses.
A display unit includes an image data output device, an image projecting device that projects image data so as to be perceived by eyes of a user, a skeleton frame on which the image projecting device is mounted, the sunglass lenses being disposed on the skeleton frame, in which the sunglass lenses are set so that a transmissivity of visible light in a predetermined wavelength region is peculiarly low and so that transmissivities of visible light in wavelength regions other than the visible light in the predetermined wavelength region are peculiarly high, and in which the coloring of image light visualized by the image projecting device is formed by light differing in color from the visible light having peculiarly high transmissivities in the sunglass lenses.
Disclosed is a plastic optical product or a plastic lens for eyeglasses, which has excellent heat resistance, while having an optical multilayer film. Specifically disclosed is a plastic optical product in which an optical multilayer film (3) that is composed of seven layers is formed on the surface of a plastic base (1) directly or with an intermediate film (2) being interposed therebetween. With respect to the layers of the optical multilayer film (3), one immediately above the plastic base (1) is a low refractive index layer, and low refractive index layers and high refractive index layers are alternately arranged. At least the high refractive index layer located in the center of the optical multilayer film (3) contains substoichiometrically oxidized titanium. In a plastic lens for eyeglasses, which is an example of the above-mentioned plastic optical product, the plastic base (1) is composed of a plastic lens base for eyeglasses, the intermediate film (2) is composed of a hard coat film, and the optical multilayer film (3) is composed of an antireflective film.
Disclosed are: a method for producing a plastic lens that has a high-performance antistatic anti-reflection film wherein two layers, namely a high refractive index layer and a low refractive index layer, can be easily affixed at the same time; and a plastic lens which is produced by the production method. Specifically, a first coating liquid, which is obtained by dispersing, as fine conductive metal oxide particles, fine ZnO·Sb2O5 particles and fine complex oxide particles mainly composed of SnO2 in a volatile solvent (for example, in isopropyl alcohol), is applied over the surface of a plastic optical base that is provided with a hard coat layer, and the volatile solvent is volatilized without being heated, thereby forming a high refractive index layer. A second coating liquid, which is mainly composed of an organosilicon compound wherein fine hollow silica particles that have an average particle diameter not smaller than the average particle diameter of the fine ZnO·Sb2O5 particles are dispersed, is applied onto the thus-formed high refractive index layer by a spin coating method, and a low refractive index layer is formed on top of the high refractive index layer by heating.
A plurality of to-be-evaluated lenses that differ in lens surface design from one another is prepared in an evaluation-value calculating step. Thereafter, a subject's predetermined biological information, e.g., brain waves, is measured for each of the to-be-evaluated lenses by allowing the subject to wear each of the lenses, and an evaluation value for each of the lenses is calculated relative to a predetermined index in the brain waves, for example, relative to a “state of being under stress.” Thereafter, a correlation between the calculated evaluation value and a lens surface shape is calculated as an index characteristic in a lens-surface-shape determining step. Thereafter, a lens surface shape of a suitable spectacle lens in the index is determined based on the index characteristic, and the lens surface shape is fed back as a shape of a to-be-evaluated lens of the evaluation-value calculating step.
A method for manufacturing an externally circular precursor lens that is processed into a rim-shaped lens includes inputting processing data to specify the shape of the rim-shaped lens, and processing a material block based on the processing data so as to manufacture a precursor lens. An elliptical virtual rim surrounding the precursor lens manufactured at that time is imaginarily set, and is processed based on the processing data up to that range, and, outside the virtual rim, an amount of sag is changed to secure the edge thickness of the precursor lens. This method for manufacturing a precursor lens for a rim-shaped lens reduces an excessive load imposed on a processing tool during processing, allows the precursor lens to be processed into a rim-shaped lens while satisfactorily maintaining its edge thickness without the lack of the edge of the precursor lens, and results in a thin lens.
B24B 49/00 - 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
B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
