Hoya Corporation

Hoya Lens Thailand Ltd.

Hua Qi

Takako Ishizaki

Shigetoshi Kono

Takashi Hatanaka

Toshiaki Sonehara

Atsuo Minato

Takahiro Uchidani

Yoshihiro Kikuchi

Keigo Hasegawa

Tetsuma Yamakaji

Akira Kitani

Hidetoshi Nishimura

Hisanori Akiyama

Norihisa Tanaka

Toshiro Yoda

Ikuka Tanaka

Kazuhiko Ohnuma

The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a luminous flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge on a retina; and a plurality of defocus regions that are in contact with the base region and that are each configured such that a luminous flux that passes through at least a part of the corresponding defocus region enters the retina as diverging light, in which a defocus spot angle (DSA) of the luminous flux that causes a light spot having a size mainly for cones is set in a defocus region located near the center of the eyeglass lens, and a defocus spot angle (DSA) of the luminous flux that causes a light spot having a size mainly for rods is set in a defocus region located near the periphery of the eyeglass lens.

Eyeglass lens

The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a light flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge at a position A on a retina; and a plurality of defocus regions that are in contact with the base region, in which a light flux that passes through at least part of each defocus region is incident on the position A as diverging light, wherein a refractive power in the defocus regions increases in a direction from a center portion to a peripheral portion.

An eyeglasses lens evaluation device includes a fixation point setting part to set a fixation point on an evaluation target space and set a line of sight passing position on eyeglasses lenses when a wearer wears the eyeglasses lenses and looks at the fixation point, an apparent position calculating part to calculate an apparent position of each of a plurality of evaluation points set on the evaluation target space in a state where the wearer wears the eyeglasses lenses and fixates the wearer's eyes on the fixation point via the line of sight passing positions, a difference calculating part to calculate, for each of the plurality of evaluation points, a difference between the apparent position and a reference position, and an evaluation index calculating part to calculate an evaluation index by taking statics of the difference for each of the plurality of evaluation points calculated by difference calculating part.

Eyeglasses lens evaluation device

An aspect is to not impair an effect of suppressing the progression of myopia or hyperopia even in a peripheral area of a spectacle lens. A spectacle lens and a technology related thereto are provided, the spectacle lens including: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; a plurality of defocusing second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, wherein at least some of the second areas in a peripheral area of the spectacle lens that is a radius range from 4.5 mm to 25 mm from a lens center have a shape that suppresses a variation in a defocusing effect, the variation being more likely to occur as a distance from the lens center increases.

Spectacle lens and method for designing the same

Provided is an eyeglass lensconfigured to cause rays that have entered from an object-side surfaceto be emitted from an eyeball-side surface, and cause the emitted rays to converge at a predetermined position A. The eyeglass lensincludes a lens substratehaving a plurality of substrate convex portionson at least one of the object-side surfaceand the eyeball-side surface, and a coating film covering the surface provided with the substrate convex portions. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the substrate convex portionsare provided is an approximate shape of the substrate convex portions configured to cause rays that have entered the eyeglass lensto converge at a position B that is closer to the object than the predetermined position A is.

Provided are a spectacle lens and a technique associated therewith, the spectacle lens including: an object-side surface and an eyeball-side surface; a first refractive region having a first refractive power based on a prescription for correcting a refractive error of an eye; and a second refractive region having a refractive power different from the first refractive power, the second refractive region having a function of forming a focal point at a position other than a retina of the eye so as to suppress progression of the refractive error of the eye, wherein an interface portion is disposed inside the spectacle lens, the interface portion includes a base portion, and convex portions protruding from the base portion, or concave portions recessed from the base portion, the function of the second refractive region is exerted by using mutually different respective refractive indexes of two types of members sandwiching the interface portion therebetween, and the convex portions or the concave portions, and an outermost surface portion of the spectacle lens that corresponds to the convex portions or the concave portions is smooth.

Spectacle lens and method for manufacturing same

The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a light flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge at a position A on a retina; and a plurality of defocus regions that are in contact with the base region, wherein the defocus regions each include a first portion and a second portion, a refractive power of the first portion is within ±0.12 D of the refractive power of the base region, and a light flux that passes through the second portion of the defocus region is incident on the position A as diverging light.

Provided is a method for evaluating an eyeglass lens that has a plurality of convex portions on at least one of an object-side surface and an eyeball-side surface, in which the eyeglass lens is evaluated based on the number of rays at a plurality of focal positions A at which rays, which pave passed through the plurality of convex portions in a predetermined evaluation region of the eyeglass lens, converge when ray tracing is performed on the predetermined evaluation region, and technology related thereto.

Method for evaluating spectacle lens, and spectacle lens

Provided is an eyeglass lensconfigured to cause rays that have entered from an object-side surfaceto be emitted from an eyeball-side surfaceand cause the emitted rays to converge at a predetermined position A. The eyeglass lensincludes a lens base materialhaving a plurality of base material convex portionson at least one of the object-side surfaceand the eyeball-side surface, and a coating film covering the surface provided with the base material convex portions, in which convex portions present on the outermost surface of the eyeglass lenslocated on a side on which the base material convex portionsare provided and the base material convex portionshave common light ray convergence properties.

An object is to not lose an effect of suppressing the progression of myopia or hyperopia even in a peripheral area of a spectacle lens. A spectacle lens and a technology related thereto are provided, the spectacle lens including: a first area that causes light rays incident on an object-side face of the lens to exit from an eyeball-side face of the lens and to converge at a predetermined position A on a retina of a wearer; and a plurality of second areas configured to cause light rays to converge at a position B on the object side or a position C on the distal side relative to the position A, wherein, in the first area in a peripheral area of the spectacle lens that is a radius range from 4.5 mm to 25 mm of a lens center, a refractive power error in a meridional direction and a refractive power error in a sagittal direction have values that cause light rays to converge in a direction extending from a vicinity of the position A toward the position B if the second areas cause the light rays to converge at the position B, or have values that cause light rays to converge in a direction extending from the vicinity of the position A toward the position C if the second areas cause the light rays to converge at the position C.

Provided is an eyeglass lens configured to cause rays that have entered from an object-side surface to be emitted from an eyeball-side surface and cause the emitted rays to converge at a predetermined position A. The eyeglass lens includes a lens base material having a plurality of base material convex portions on at least one of the object-side surface and the eyeball-side surface, and the eyeglass lens has a configuration for suppressing stray light rays that do not pass through the vicinity of the predetermined position A or the vicinity of the position B that is closer to the object than the predetermined position A is.

Provided is an eyeglass lensconfigured to cause rays that have entered from an object-side surfaceto be emitted from an eyeball-side surface, and cause the emitted rays to converge at a predetermined position A. The eyeglass lensincludes a lens base materialhaving a plurality of base material convex portionson at least one of the object-side surfaceand the eyeball-side surface, and a coating film covering the surface provided with the base material convex portions. The shape of convex portions present on the outermost surface of the eyeglass lens located on a side on which the base material convex portionsare provided is an approximate shape of the base material convex portions configured to cause rays that have entered the eyeglass lensto converge at a position B that is closer to the object than the predetermined position A is.

Provided is a method for evaluating production precision of a spectacle lens having micro convex segments protruding from a convex surface on an object side of the spectacle lens, including measuring a shape of the convex surface of the spectacle lens; setting an actual device virtual model including a spectacle lens model based on the measured shape and an eyeball model; performing ray tracing calculation on the actual device virtual model and specifying an actual device convergence position where light rays converge on an front side of a retina of the eyeball model; and evaluating production precision of the spectacle lens on the basis of the actual device convergence position.

Method, device and storage medium for evaluating production precision of spectacle lens

In a simulation system in which a terminal device employed in a spectacle shop and a display device for visually recognizing by a prospective spectacle lens wearer, are connected to a server device so as to capable of communication: the server device includes an image generation unit that achieves a state in which a simulation image reflecting lens visual performance of a spectacle lens can be output for each of plural partial visual field areas, and an information storage unit that stores explanatory information regarding characteristics of the lens visual performance for each of the plural partial visual field areas; the display device includes a display screen unit that selectively displays the simulation images in the partial visual field areas; and the terminal device includes an information output unit that outputs the explanatory information corresponding to the partial visual field area being displayed on the display screen unit.

Simulation system, simulation device, and product explanation assistance method

There is provided a simulation device for virtually displaying an image to be viewed through a spectacle lens by a wearer of a spectacle lens, including: an imaging camera configured to perform imaging in a visual field of the wearer; a depth sensor configured to acquire a depth image in the same view angle as an imaging result obtained by the imaging camera; a data acquisition unit configured to acquire lens data of the spectacle lens; an image creation unit configured to create a simulation image on which a view of an image to be viewed through the spectacle lens is reflected, by applying image processing to the imaging result obtained by the imaging camera, based on the depth image and the lens data; and an image displayer configured to display and output the simulation image as an image to be viewed through the spectacle lens.

Growing community of inventors

Tokyo, Japan

Hua Qi