Abrégé

Provided is a head-mounted display capable of expanding the range in which a user can clearly view images. A head-mounted display 1 includes a display device 3 to display images 3a and 3b for the left eye and the right eye on a screen 3c, and virtual image forming optical systems 4a and 4b for the left eye and the right eye respectively disposed with respect to the images 3a and 3b for the left eye and the right eye on the screen 3c, wherein the virtual image forming optical systems 4a and 4b have positive power set in respective regions that visual lines of a user pass through, and include, at outer sides of optical centers in directions orthogonal to optical axes, power adjusting regions 55 having power set closer to the negative side than power at the optical centers.

Classes IPC  ?

• G02B 27/01 - Dispositifs d'affichage "tête haute"
• G02B 27/14 - Systèmes divisant ou combinant des faisceaux fonctionnant uniquement par réflexion

Abrégé

A method for designing an eyeglass lens includes an eyeball model construction step of determining a value of a parameter of each of a plurality of optical elements, and constructing an eyeball model, an aberration acquisition step of making a light ray incident at a predetermined angle with respect to a visual axis of the eyeball model to obtain an off-axis aberration in a paracentral portion and a peripheral portion of a retina of the eyeball model by an optical simulation, an aspherical coefficient value calculation step of disposing an eyeglass lens on a front side of the eyeball model and performing the optical simulation to obtain an aspherical coefficient value acting in a direction of reducing the off-axis aberration, and an aspherical shape determination step of determining an aspherical shape of the eyeglass lens based on the aspherical coefficient value.

Classes IPC  ?

• G02C 7/02 - VerresSystèmes de verres

Abrégé

In an optical material of the disclosure, a transmittance curve satisfies the following characteristic (1) and a luminous transmittance satisfies the following characteristic (2), the transmittance curve and the luminous transmittance being measured at a thickness of 2 mm, (1) a maximum transmittance at a wavelength of from 410 nm to 450 nm is from 20% to 65%, and (2) the luminous transmittance is from 70% to 85%.

Classes IPC  ?

• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08G 18/75 - Polyisocyanates ou polyisothiocyanates cycliques cycloaliphatiques
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain

Abrégé

(3) in the hue in the CIE 1976 (L*, a*, b*) color space, a* is from 2.5 to 5.5 and b* is from 5 to 25.

Classes IPC  ?

• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/75 - Polyisocyanates ou polyisothiocyanates cycliques cycloaliphatiques
• C08K 5/00 - Emploi d'ingrédients organiques
• G02B 5/22 - Filtres absorbants

Abrégé

Provided is a head-mounted display that enables viewing of a stereoscopic image without visual fatigue caused by vergence-accommodation conflict. A head-mounted display includes a display device to display images for the left eye and the right eye on a screen, virtual image forming optical systems for the left eye and the right eye, respectively disposed with respect to images for the left eye and the right eye on the screen, and wide-focus lenses for the left eye and the right eye having a negative focal length with a range, and respectively disposed with respect to the virtual image forming optical systems for the left eye and the right eye so as to overlap optical axis directions of the virtual image forming optical systems for the left eye and the right eye. By respectively displaying virtual images of images, a permissible range of vergence and accommodation is expanded.

Classes IPC  ?

• G02B 27/01 - Dispositifs d'affichage "tête haute"
• G02B 3/02 - Lentilles simples ou composées à surfaces non sphériques
• G02B 25/00 - OculairesLoupes
• G02B 27/00 - Systèmes ou appareils optiques non prévus dans aucun des groupes ,
• G02C 7/02 - VerresSystèmes de verres
• G02C 11/00 - Accessoires non optiquesFixation de ceux-ci
• G02B 3/00 - Lentilles simples ou composées

Abrégé

Provided is a head-mounted display that can expand a range in which a user can clearly view an image.　The head-mounted display 1 comprises: a display device 3 that displays left-eye and right-eye images 3a, 3b on a screen 3c; and left-eye and right-eye virtual image-forming optical systems 4a, 4b respectively arranged for the left-eye and right-eye images 3a, 3b on the screen 3c, wherein the virtual image-forming optical systems 4a, 4b have power adjustment regions 55 in which a positive power is set in each region through which a user's visual line passes, and a power which is closer to a minus side than an optical center is set on the outside of the optical center in a direction orthogonal to an optical axis.

Classes IPC  ?

• G02B 27/02 - Appareils pour regarder ou pour lire
• G02B 13/00 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous
• G02B 13/18 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous avec des lentilles ayant une ou plusieurs surfaces non sphériques, p. ex. pour réduire l'aberration géométrique
• G02B 30/00 - Systèmes ou appareils optiques pour produire des effets tridimensionnels [3D], p. ex. des effets stéréoscopiques
• H04N 5/64 - Détails de structure des récepteurs, p. ex. ébénisterie ou housses
• H04N 13/344 - Affichage pour le visionnement à l’aide de lunettes spéciales ou de visiocasques avec des visiocasques portant des affichages gauche et droit
• H04N 13/346 - Reproducteurs d’images utilisant des prismes ou des miroirs semi-transparents

Abrégé

The present invention provides a method for designing eyeglass lenses, the method comprising: an eyeball model construction step for determining values for parameters for each of a plurality of optical elements to construct an eyeball model; an aberration acquisition step for making a light beam incident at a predetermined angle to a visual axis of the eyeball model and determining, by optical simulation, off-axis aberrations in a paracentral portion and a peripheral portion of the retina of the eyeball model; an aspheric coefficient value calculation step for placing an eyeglass lens in front of the eyeball model and performing the optical simulation to determine an aspheric coefficient value that acts to reduce the off-axis aberrations; and an aspheric shape determination step for determining, on the basis of the aspheric coefficient value, the aspheric shape of the eyeglass lens.

Classes IPC  ?

• G02C 7/02 - VerresSystèmes de verres
• G02C 13/00 - AssemblageRéparationNettoyage
• G06Q 30/06 - Transactions d’achat, de vente ou de crédit-bail

Abrégé

Provided are stereoscopic eyeglasses capable of reducing visual fatigue in binocular stereoscopic display by a simple configuration. In stereoscopic eyeglasses, in order to expand a tolerance of match between vergence and accommodation enabling comfortable stereovision in eyeglasses-using stereoscopic display, wide-focus lenses ranging in focal length are incorporated so as to overlap optical filters in light transmission directions, and accordingly, visual fatigue to be caused by vergence-accommodation conflict during stereoscopic image observation is reduced.

Classes IPC  ?

• G02B 30/22 - Systèmes ou appareils optiques pour produire des effets tridimensionnels [3D], p. ex. des effets stéréoscopiques en fournissant des première et seconde images de parallaxe à chacun des yeux gauche et droit d’un observateur du type stéréoscopique
• G02B 5/30 - Éléments polarisants
• G02C 7/02 - VerresSystèmes de verres
• G02C 7/06 - VerresSystèmes de verres bifocauxVerresSystèmes de verres multifocaux
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• G02C 7/12 - Polariseurs
• H04N 13/332 - Affichage pour le visionnement à l’aide de lunettes spéciales ou de visiocasques
• G02B 27/01 - Dispositifs d'affichage "tête haute"

Abrégé

In an optical material according to the present disclosure, the transmittance curve measured with a thickness of 2 mm satisfies the characteristics in (1) below, and the luminous transmittance satisfies the characteristic in (2).　(1) Maximum transmittance at a wavelength of 410 nm to 450 nm is at least equal to 20% and at most equal to 65%.　(2) Luminous transmittance is at least equal to 70% and at most equal to 85%.

Classes IPC  ?

• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• C08G 18/06 - Polymérisats d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• G02B 5/22 - Filtres absorbants

Abrégé

In an optical material according to the present disclosure, the transmittance curve measured with a thickness of 2 mm satisfies the characteristics in (1) and (2) below, and the hue in the CIE1976 (L*, a*, b*) color space satisfies the characteristic in (3). (1) Has a maximum value of transmittance at a wavelength of 400 nm to 450 nm or 520 nm to 570 nm, and the maximum value of the transmittance at a wavelength of 400 to 450 nm and the transmittance at a wavelength of 520 to 570 nm are at least equal to 50%. (2) Has a minimum value of transmittance at a wavelength of 470 to 500 nm, where the minimum value is at most equal to 40%. (3) The hue in the CIE1976 (L*, a*, b*) color space is such that a* is at least equal to 2.5 and at most equal to 5.5, and b* is at least equal to 5 and at most equal to 25.

Classes IPC  ?

• G02C 7/00 - Pièces optiques
• C08G 18/08 - Procédés de préparation
• C08G 18/30 - Composés de bas poids moléculaire
• G02B 5/22 - Filtres absorbants

Abrégé

3 (where r is the distance from the z-axis and A is a constant) is added to the z-coordinate value of a refractive surface determined based on a prescription power to increase the focal depth. The focal depth that decreases (shallows) in a dark place is increased to facilitate focusing on a target object located in front of or behind the original focal point. This can improve contrast sensitivity in a dark place.

Classes IPC  ?

• G02C 7/04 - Lentilles de contact pour les yeux
• G02C 7/02 - VerresSystèmes de verres
• G02C 7/06 - VerresSystèmes de verres bifocauxVerresSystèmes de verres multifocaux

Abrégé

A hard coating composition applied to an optical element body formed of organic glass. The hard coating composition contains a hydrolyzate of alkoxysilane as a main agent, a polyvalent organic carboxylic acid and a nitrogen-containing compound as auxiliary agents, and a metal oxide colloid as a refractive index control agent. The alkoxysilane contains a epoxy group-containing trialkoxysilane as a first component, tetraalkoxysilane as a second component, and a sulfide bonded tetraalkoxysilane as a third component. The hard coating composition has practical abrasion resistance by the first component and the second component, and a blending amount of the third component is an amount not impairing the practical abrasion resistance.

Classes IPC  ?

• G02B 1/14 - Revêtements protecteurs, p. ex. revêtements durs
• C09D 183/08 - Polysiloxanes contenant du silicium lié à des groupes organiques contenant des atomes autres que le carbone, l'hydrogène et l'oxygène
• C09D 7/62 - Adjuvants non macromoléculaires inorganiques modifiés par traitement avec d’autres composés
• C08G 77/28 - Polysiloxanes contenant du silicium lié à des groupes organiques contenant des atomes autres que le carbone, l'hydrogène et l'oxygène groupes contenant du soufre
• C08K 9/04 - Ingrédients traités par des substances organiques
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 1/113 - Revêtements antiréfléchissants utilisant des couches comportant uniquement des matériaux inorganiques
• C08K 3/22 - OxydesHydroxydes de métaux

Abrégé

Provided is a head-mounted display whereby it is possible to view a stereoscopic image without suffering visual fatigue due to vergence-accommodation conflict. This head-mounted display 1 comprises: a display device 3 for displaying left-eye and right-eye images 3a, 3b on a screen 3c; left-eye and right-eye virtual-image-forming optical systems 4a, 4b respectively arranged for the left-eye and right-eye images on the screen; and left-eye and right-eye wide-focus lenses 5a, 5b in which the focal length is negative and has a range, the wide-focus lenses 5a, 5b being respectively arranged so as to be superposed in the respective optical axis directions relative to the left-eye and right-eye virtual-image-forming optical systems. Virtual images of left-eye and right-eye images formed by the left-eye and right-eye virtual-image-forming optical systems are respectively displayed in a near range by the left-eye and right-eye wide-focus lenses, whereby the allowable levels of vergence and accommodation are expanded in the near field, and stereoscopic images can be viewed in a wide area in the near field without suffering visual fatigue due to the vergence-accommodation conflict.

Classes IPC  ?

• G02B 27/02 - Appareils pour regarder ou pour lire
• G02B 13/16 - Objectifs optiques spécialement conçus pour les emplois spécifiés ci-dessous à utiliser en combinaison avec des convertisseurs ou des amplificateurs d'image
• G02B 17/08 - Systèmes catadioptriques
• G02B 25/00 - OculairesLoupes
• G02B 27/22 - Autres systèmes optiques; Autres appareils optiques pour produire des effets stéréoscopiques ou autres effets de relief
• G03B 35/20 - Photographie stéréoscopique par examen simultané employant plusieurs projecteurs
• H04N 13/339 - Affichage pour le visionnement à l’aide de lunettes spéciales ou de visiocasques utilisant le multiplexage spatial
• H04N 13/344 - Affichage pour le visionnement à l’aide de lunettes spéciales ou de visiocasques avec des visiocasques portant des affichages gauche et droit
• H04N 13/346 - Reproducteurs d’images utilisant des prismes ou des miroirs semi-transparents

Abrégé

Provided are stereoscopic glasses whereby visual fatigue in binocular stereoscopic display can be alleviated by a simple structure. In these stereoscopic glasses 10, in order to increase the allowed range of consistency of vergence and accommodation for enabling comfortable stereoscopic vision in glasses-type stereoscopic display, wide-focus lenses 16a, 16b having a wide focal length are incorporated so as to overlap in the light transmission direction with optical filters 14a, 14b, and visual fatigue due to vergence-accommodation conflict during stereoscopic image observation is reduced.

Classes IPC  ?

• G02C 7/02 - VerresSystèmes de verres
• G02B 5/30 - Éléments polarisants
• G02B 27/22 - Autres systèmes optiques; Autres appareils optiques pour produire des effets stéréoscopiques ou autres effets de relief
• G02C 7/06 - VerresSystèmes de verres bifocauxVerresSystèmes de verres multifocaux
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• G02C 7/12 - Polariseurs

Abrégé

The purpose of the present invention is to provide an optical element that exhibits excellent adhesion of a functional resin layer in which a fracture is unlikely to occur even when the optical element is subjected to excessive force. This optical element has a functional resin layer (15) integrated in one or both surfaces of an organic glass substrate (11) which is a resin molding, wherein the functional resin layer (15) contains a functional chemical agent, an isocyanate compound, and a polyol compound, and the polyol compound contains a polyhydric alcohol polymer compound having an average molecular weight of 180 or more. Since the polyhydric alcohol polymer compound having an average molecular weight of 180 or more is highly hydrophilic, and a polymer that is formed from the polyhydric alcohol polymer compound and the isocyanate compound that is lipophilic is used as a binder; the functional resin layer (15) has a well-balanced combination between hydrophilicity and lipophilicity and exhibits excellent adhesion to the organic glass substrate (11).

Classes IPC  ?

• G02B 1/10 - Revêtements optiques obtenus par application sur les éléments optiques ou par traitement de la surface de ceux-ci
• B29C 39/12 - Fabrication d'objets multicouches ou polychromes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 5/23 - Filtres photochromiques
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• B29L 11/00 - Éléments optiques, p. ex. lentilles, prismes

Abrégé

The present invention addresses the problem of providing: an optical element in which photochromism (reversing speed) is improved; and a production method therefor. The optical element according to the present invention has a heat-curable functional resin layer (15) integrated in one or both surfaces of an organic glass substrate (11) which is a resin molding. The functional resin layer (15) is formed of a cross-linked polymer of a thiourethane-based resin composition containing an organic photochromic agent. The active hydrogen component of urethane resin in the composition includes SH component as a main component and OH component as a subcomponent. In addition, as said OH component, a polyalkylene oxide (PAO) having a specific molecular weight and including an ether chain of PEO is added.

Classes IPC  ?

• G02B 1/10 - Revêtements optiques obtenus par application sur les éléments optiques ou par traitement de la surface de ceux-ci
• B29C 39/12 - Fabrication d'objets multicouches ou polychromes
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/48 - Polyéthers
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 5/23 - Filtres photochromiques
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil

Abrégé

The present invention provides a vision correction lens capable of improving contrast sensitivity, for example, in the nighttime darkness. The vision correction lens is made by adding a depth of focus extension component represented by Ar3 (where r represents the distance from the Z-axis and A represents a constant) to a Z-coordinate value on a refractive surface determined on the basis of a prescription power when the Z axis represents a longitudinal axis passing through the geometric center of the lens, and a direction toward the back of the lens is the positive Z axis. A short (shallow) depth of focus in the darkness increases to facilitate focusing an object positioned in front of or behind the original focal point, thereby improving contrast sensitivity in the darkness.

Classes IPC  ?

• G02C 7/02 - VerresSystèmes de verres
• G02C 13/00 - AssemblageRéparationNettoyage

Abrégé

The purpose of the present invention is to provide a photochromic member with a novel structure that exhibits photochromism having a gradation color under ultraviolet radiation, and can be used for eyeglasses or the like. Provided is a photochromic member (11) for an eyeglass lens, sunglasses and the like, having a photochromic layer (13) made of organic glass or inorganic glass containing a photochromic dye, wherein the photochromic member includes a tapering part in which ultraviolet absorbance of the photochromic layer (13) gradually decreases on the planar surface. Thus, the photochromic member (11) exhibits photochromism having a gradation color under ultraviolet radiation.

Classes IPC  ?

• G02B 5/23 - Filtres photochromiques
• G02C 7/00 - Pièces optiques
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil

Abrégé

Provided is a light-modulating optical element that enables shortening of decolorization time through an interaction with a synthetic resin. This light-modulating optical element is used as an eyeglass material in which a functional resin layer 15 is integrated in one or both sides of an organic glass substrate 11 made of a resin molding, wherein the functional resin layer 15 contains a photochromic agent and a polyalkylene glycol-modified bisphenol A di(meth)acrylate represented by general formula (1). Transition energy in the photochromic agent that has transitioned as a result of irradiation with light (ultraviolet) is easily converted into thermal energy and received by the polyalkylene glycol-modified bisphenol A di(meth)acrylate represented by general formula (1) after shutting off the irradiation, whereby it becomes possible to shorten decolorization time.

Classes IPC  ?

• G02C 1/04 - Pontets ou arcades étant fixés à une bordure partielle ou en étant partie intégrante, p. ex. bordures en partie souples pour tenir les verres
• B32B 27/18 - Produits stratifiés composés essentiellement de résine synthétique caractérisée par l'emploi d'additifs particuliers
• B32B 27/30 - Produits stratifiés composés essentiellement de résine synthétique comprenant une résine vinyliqueProduits stratifiés composés essentiellement de résine synthétique comprenant une résine acrylique
• C08F 2/44 - Polymérisation en présence d'additifs, p. ex. plastifiants, matières colorantes, charges
• C08F 20/30 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des cycles aromatiques dans la partie alcool
• C08F 299/02 - Composés macromoléculaires obtenus par des interréactions de polymères impliquant uniquement des réactions entre des liaisons non saturées carbone-carbone, en l'absence de monomères non macromoléculaires à partir de polycondensats non saturés
• C08F 299/06 - Composés macromoléculaires obtenus par des interréactions de polymères impliquant uniquement des réactions entre des liaisons non saturées carbone-carbone, en l'absence de monomères non macromoléculaires à partir de polycondensats non saturés à partir de polyuréthanes
• G02B 5/23 - Filtres photochromiques

Abrégé

The present invention addresses the problem of providing an eyeglass material which can suppress yellowing thereof and graylevel differences in gradation of color caused by the difference in thicknesses of the inner and outer peripheries thereof even when an eyeglass material contains an ultraviolet absorbent having a high cut rate against blue light. In this eyeglass material in which a functional resin layer 15 is integrated with one surface or both surfaces of an organic glass substrate 11 which is a resin molded body, the functional resin layer 15 contains an ultraviolet absorbent having an absorbing peak wavelength of 320 nm or longer and a thickness smaller than the organic glass substrate 11. Therefore, the eyeglass material can have a yellowness (Y1) of less than 10.

Classes IPC  ?

• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• G02B 5/22 - Filtres absorbants

Abrégé

Provided is an optical component (10) having an optical multilayer film (21) on one face or both faces of an organic glass substrate (13). The optical component (10) has an average reflectance of not less than 25% for near-infrared rays (wavelengths of 800-1500 nm). The optical multilayer film (21) has a layer structure including six or more layers consisting of a plurality of low-refractive-index layers (25) and a plurality of high-refractive-index layers (23), wherein at least one of the high-refractive-index layers (23) is formed of a titanium oxide, and the other high-refractive-index layers (23) are formed of a high-refractive-index material having a refractive index of 1.90-2.14 (for the wavelength of 500 nm). The optical component (10) can reduce transmission of near-infrared rays, can be easily manufactured, and can improve the durability of the optical multilayer film (21).

Classes IPC  ?

• G02B 5/28 - Filtres d'interférence
• G02B 1/115 - Multicouches
• G02B 1/16 - Revêtements optiques obtenus par application sur les éléments optiques ou par traitement de la surface de ceux-ci ayant un effet antistatique, p. ex. revêtements conducteurs électriques
• G02B 3/00 - Lentilles simples ou composées
• G02B 5/26 - Filtres réfléchissants
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil

Abrégé

A material for spectacles, in which a functional resin layer (15) is integrated by injection molding on one or both surfaces of an organic glass substrate (11) which is a resin molded article, the organic glass substrate (11) being molded from a thermosetting resin raw material which is thiourethane-based, episulfide-based, or (meth)acrylate ((M)Ac hereinafter)-based, the functional resin layer (15) being molded from a (M)Ac-based thermosetting resin raw material (functional resin layer raw material), and a polymerizable component of the functional resin layer raw material comprising an OH-group-containing alkyl (M)Ac and another (M)Ac having an at least bifunctional group as the main component thereof. This material for spectacles has practical adhesive strength between the organic glass substrate and the functional resin layer.

Classes IPC  ?

• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• B29C 39/12 - Fabrication d'objets multicouches ou polychromes
• B29C 39/24 - Alimentation en matière des moules
• C08F 20/26 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle
• C08F 290/06 - Polymères prévus par la sous-classe
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• B29K 101/10 - Résines thermodurcissables
• B29L 9/00 - Produits stratifiés
• B29L 11/00 - Éléments optiques, p. ex. lentilles, prismes

Abrégé

The purpose of the present invention is to improve the thermal resistance of a DLC film formed on a target object and to provide a hydrogen-free DLC film having high hardness. The present invention is a DLC film having an element other than hydrogen or carbon added thereto and, when the Raman spectrum is measured using a laser light having a wavelength of 500-600 nm, a graphite structure-derived G band, a graphite structure defect-derived D band, and a characteristics band abbreviated as an S band and having a wavelength peak between 1,000-1,200 cm-1 are detected. When the G band peak intensity and area intensity are Pg and Ag, the D band peak intensity and area intensity are Pd and Ad, and the characteristics band peak intensity and area intensity are Ps and As, the peak intensity ratio Pd/Pg and the area intensity ratio Ad/Ag are no more than 0.5 and the peak intensity ratio Ps/Pd and the area intensity ratio As/Ad are at least 0.01.

Classes IPC  ?

• C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
• C01B 31/02 - Préparation du carbone; Purification

Abrégé

A process for producing a resin lens by cast molding, comprising: using a base lens (11) as a first mold (11'); disposing a second mold (17) on one face side of the first mold (11') so as to form a prescribed nearly uniform space therebteween; sealing the periphery of the space between the first and second molds (11',17) with a tape (19) or the like to constitute a cavity (21); pouring a liquid resin raw material into the cavity (21) to form a functional resin layer (15) though cast molding; and thus unifying the base lens (11) and the functional resin layer (15). In the process, the base lens (11) used as the first mold (11') is provided with a thermoplastic elastomer-based adhesive layer on the face on the side on which the functional resin layer (15) is to be formed. In an adhesion test, the resin lens thus produced exhibits excellent adhesion not only in mechanical working but also in a warm or hot water resistance test. Further, it is expected that the resin lens will exhibit improved service durability even under high-temperature and high-humidity conditions.

Classes IPC  ?

• B29C 39/12 - Fabrication d'objets multicouches ou polychromes
• G02C 7/00 - Pièces optiques
• B29L 11/00 - Éléments optiques, p. ex. lentilles, prismes
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil

Abrégé

An optical member (10) made of resin has translucency. The optical member (10) made of resin has a surface that includes a fine unevenly profiled portion (16) having fine uneven structures (20) and a flat portion (18) having no fine uneven structures. The fine uneven structures (20) in the fine unevenly profiled portion (16) include a concave portion or a convex portion formed with a pitch that is no larger than the wavelength of visible light. The fine uneven structures (20) in the fine unevenly profiled portion (16) include a concave portion or a convex portion that is no lower than 37 nm.

Classes IPC  ?

• F21S 8/10 - spécialement adaptés pour des véhicules

Abrégé

An automotive lamp includes an LED, a substrate that mounts the LED, a reflector that reflects the light emitted from the LED, and an projection lens having an incident surface, which receives the light reflected by the reflector, and an emission surface that emits the light toward a front area of the automotive lamp. A fine asperity structure is formed on the incident surface of the projection lens. The fine asperity structure includes recesses or raised portions formed with the pitch less than or equal to the visible light wavelength.

Classes IPC  ?

• F21S 8/10 - spécialement adaptés pour des véhicules

Abrégé

Provided is an anti-glare optical element that has superior anti-glare performance, is superior from the viewpoint of protecting the eyes, and assures visibility when used in lenses for eyeglasses, etc. This optical element is formed from a transparent base material and is a single layer or multiple layers having a polarizing element. The transparent base material contains a pigment that absorbs specific wavelengths along with an ultraviolet ray absorbing agent. In a transmittance curve measured using a spectrophotometer ("transmittance curve" in the following), the transmittance curve provides a first valley minimum and a second valley minimum in the wavelength regions of 450 - 500 nm and 550 - 630 nm, respectively. Furthermore, the overall average transmittance in the wavelength region of 400 - 700 nm is 35% or greater. The transmittance for each of the first and second valley minimums is 60% or less, and the difference from the transmittance for each of the adjacent maximums is 20% or greater. Furthermore, the average difference in transmittance at each minimum wavelength ± 20 nm from the transmittance at each of the first and second valley minimums is in a range of 10 - 50%.

Classes IPC  ?

• G02B 5/22 - Filtres absorbants
• G02B 5/30 - Éléments polarisants
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
• G02C 7/12 - Polariseurs

Abrégé

A surface-treated mold which, in at least the imprinting surface of a mold (10), is provided on the outermost layer with a silazane film (mold release film) directly, or with an intermediary film (13), on a base material (11). The silazane film comprises a crosslinked condensation polymer having a perfluoroalkyl group-containing triaminosilane represented by the structural formula as the monomers or main monomers, and is chemically bonded to the mold base material (11) or the neighboring intermediary film (13). CnF2n+1CmH2mSi(NH2)3 (where n is 2-10 and m is 1-4). This surface-treated mold realizes a high mold release heat resistance and mold release durability, allowing continuous stable production of excellent molded products.

Classes IPC  ?

• B29C 33/62 - Agents de démoulage, de lubrification ou de séparation à base de polymères ou d'oligomères
• B32B 27/00 - Produits stratifiés composés essentiellement de résine synthétique
• C08G 77/62 - Composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant du silicium, avec ou sans soufre, azote, oxygène ou carbone dans lesquels tous les atomes de silicium sont liés autrement que par des atomes d'oxygène par des atomes d'azote
• C23C 14/12 - Composé organique

Abrégé

An optical element provided with a multilayer reflection preventing film (optical inorganic thin film) (16) on an optical element substrate (10). Counting layers from the optical element base layer (same below), the first layer of the optical inorganic thin film is a vapor deposition film (below, "specific vapor deposition film") comprising either 1) a mixture or compound of La oxides and Ti oxides, or 2) a mixture or compound of La oxides and Ta oxides, and has a refractive index nD of 1.95-2.25. Further, the final layer is a vapor deposition film comprising SiO2, and on the inner side of the final layer an intermediate layer is provided which comprises a vapor deposition film of one or more layers formed from one metal oxide selected from a group consisting of ITO (indium tin oxide) and oxides of elements in groups 4 and 5 and periods 4-6. This optical element is not prone to swelling up in initial stages and maintains a high degree of heat resistance.

Classes IPC  ?

• G02B 1/11 - Revêtements antiréfléchissants
• B32B 9/00 - Produits stratifiés composés essentiellement d'une substance particulière non couverte par les groupes
• G02B 1/10 - Revêtements optiques obtenus par application sur les éléments optiques ou par traitement de la surface de ceux-ci
• G02C 7/02 - VerresSystèmes de verres

Abrégé

Provided is a release film which makes it possible to attain satisfactory releasability and improvements in durability in repetitions of molding, etc., and with which it is possible to produce satisfactory molded articles. Also provided is a mold equipped with the release film. In particular, in a mold having recesses and protrusions of a nanometer size (for example, a mold for forming an antireflection structure), the release film attains far better releasability than conventional release films and further attains excellent durability in repetitions of use. As the release film, use is made of a noble-metal nitride, that is, the nitride of platinum (Pt), palladium (Pd), gold (Au), rhodium (Rh), osmium (Os), ruthenium (Ru), iridium (Ir), rhenium (Re), or an alloy thereof. Of these, platinum nitride (Pt-N) produces a highly excellent effect.

Classes IPC  ?

• B29C 33/38 - Moules ou noyauxLeurs détails ou accessoires caractérisés par la matière ou le procédé de fabrication

Abrégé

Provided is a methacrylic resin composition that can be used in molding formed by means of a metallic mold having a plurality of nano-scale recesses and projections on the surface thereof. The methacrylic resin composition comprises a methacrylic resin (A), which has an MFR (230℃/3.8kg) within the range from 0.1 to 50, and at least one component (B), which is selected from a group comprising higher fatty acid esters, higher fatty alcohols, higher fatty acids, higher fatty acid amides, and higher fatty acid metal salts, at a proportion of 0.2-0.5 parts by mass of the aforementioned component (B) per 100 parts by mass of the aforementioned methacrylic resin (A).

Classes IPC  ?

• C08L 33/06 - Homopolymères ou copolymères des esters d'esters ne contenant que du carbone, de l'hydrogène et de l'oxygène, l'oxygène, faisant uniquement partie du radical carboxyle
• B29C 45/37 - Parois des cavités de moulage
• C08K 5/00 - Emploi d'ingrédients organiques

Abrégé

To provide a functional spectral filter through which, it is possible for an observer wearing the functional spectral filter to change his or her color sensitivity (ease of color distinction), and which is for designing a color scheme easy to be distinguished for a color deficient observer by using the filter. A functional spectral filter including a multilayer is formed in accordance with a thin film design (an optimization method) determined by use of a color vision theory so as to make color sensitivity into a desired pattern. With respect to combinations that two colors among a plurality of specified colors are combined, color differences in the respective combinations are made close to a color difference given in advance. Alternatively, with respect to specified combinations, the color differences are made small or the color differences are made large.

Classes IPC  ?

• G06F 7/60 - Méthodes ou dispositions pour effectuer des calculs en utilisant une représentation numérique non codée, c.-à-d. une représentation de nombres sans baseDispositifs de calcul utilisant une combinaison de représentations de nombres codées et non codées
• G06F 17/10 - Opérations mathématiques complexes
• G02B 5/28 - Filtres d'interférence

Abrégé

A molded product of an antireflection nanostructure having an aspect ratio of 1 or above is produced while a high productivity is maintained without using a mold release agent or the like by making it possible to fill a die having a nanostructure of high aspect ratio with resin up to the deep part of the nanostructure. After heating the surfaces of a core (4) on the fixed side and a core (5) on the movable side to a temperature higher than the softening temperature of resin being molded, the core (4) on the fixed side and the core (5) on the movable side are mold-clamped, the core (4) on the fixed side and the core (5) on the movable side are filled with resin following the mold clamping, the pressure of the filling resin is held while the core (4) on the fixed side and the core (5) on the movable side are cooled down to a temperature lower than the softening temperature of the resin, the resin molding is held at a low temperature and then the core (4) on the fixed side and the core (5) on the movable side are mold-opened, thus injection molding a molded product having a structure of nanometer size on the surface thereof.

Classes IPC  ?

• B29C 45/37 - Parois des cavités de moulage
• B29C 45/78 - Mesure, commande ou régulation de la température
• G02B 1/11 - Revêtements antiréfléchissants

Abrégé

This invention provides a DLC film comprising ta-C, that is, DLC having an sp3/(sp2 + sp3) structural ratio of 0.5 to 0.9, a hydrogen content of 0 to 5 atomic%, a nanoindentation hardness of 40 to 100 GPa, and a density of 2.7 to 3.4 g/cm3. In surface scanning detection at a measuring feed of 0.01 mm with a tracer-type surface shape measuring device having a tracer tip radius of curvature of 2 &mgr;m on the surface of a film formed on a base material, the absolute value change level of arithmetical mean roughness between the arithmetic mean roughness Ra (S) of a film forming face before the formation of a film on the base material and the arithmetic mean roughness Ra (D) of the DLC film face, i.e., ﶴRa (= |Ra(S) - Ra(D)|), is not more than 0.75 nm, and the number of concavoconvexes having a height or depth of not less than 20 nm on the DLC film face is not more than 0.01/unit scanning distance (mm)/unit film thickness (nm).

Classes IPC  ?

• C01B 31/02 - Préparation du carbone; Purification
• B21D 37/01 - Emploi de matériaux spécifiés
• B29C 33/38 - Moules ou noyauxLeurs détails ou accessoires caractérisés par la matière ou le procédé de fabrication
• C03B 11/08 - Structure du poinçon ou du moule pour la fabrication d'articles pleins, p. ex. des lentilles
• C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
• C23C 14/32 - Évaporation sous vide par explosionÉvaporation sous vide par évaporation suivie d'une ionisation des vapeurs
• B29L 11/00 - Éléments optiques, p. ex. lentilles, prismes

Abrégé

A functional spectrum filter is provided with features in which, if an observer wears the functional spectrum filter, it is possible to change his or her color sensitivity (color identification degree) and to design a color scheme with the filter which a color deficient observer easily identifies. A functional spectrum filter with multiple layers is formed in accordance with a thin film design (optimization method) obtained from the application of a chromatic vision theory to make a chromatic vision characteristic desirable in pattern. Two-color combinations are selected from a plurality of designated colors. A color difference of each combination is made close to a range given in advance. Alternatively, the color difference is set to be small or large for a specific combination.

Classes IPC  ?

• G02B 5/28 - Filtres d'interférence
• A61F 2/16 - Lentilles intraoculaires
• A61F 9/00 - Procédés ou dispositifs pour le traitement des yeuxDispositifs pour mettre en place des verres de contactDispositifs pour corriger le strabismeAppareils pour guider les aveuglesDispositifs protecteurs pour les yeux, portés sur le corps ou dans la main
• G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil