Hoya Corporation

Hoya Lens Thailand Ltd.

The Hong Kong Polytechnic University

Bridgestone Corporation

Materialise N.v.

Takashi Hatanaka

Yoshihiro Kikuchi

Chi Ho To

Siu Yin Lam

Yasutake Masuda

Hua Qi

Kazuma Kozu

Akira Kitani

Tetsuma Yamakaji

Tomohiro Odaira

Hans Warntjes

Jan Willem Maes

Tom Cluckers

Masaaki Matsushima

Michitaka Takeshita

Naoya Hirono

Takeo Koseki

Tsuyoshi Saigo

Misaki Hatsuda

Alireza Parandian

Volkhard Schroth

Wolfgang Jaschinski

A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.

Spectacle lens

In a spectacle lens added with prism thinning, a spherical refractive power of a first refractive portion is positive, and a prism base direction of a prism provided at a prism measurement reference point is set toward a second refractive portion side; a mean value of a difference of a mean curvature in a lens curved surface along a direction passing through a midpoint of a connecting line between two alignment reference marks and orthogonal to the connecting line with respect to a mean curvature in a lens curved surface along a direction of a lens without prism is smaller in a first-refractive-portion-side region from a fitting point than that in a second-refractive-portion-side region from the fitting point.

Eyeglass lens, method for designing eyeglass lens, and method for manufacturing eyeglass lens

A spectacle lens including a prism prescription that has an eyeball-side optical surface. When one side is the same side as a prism base direction (nose side) and the other side is an opposite side of the prism base direction with a direction orthogonal to the prism base direction passing through a prism measurement reference point as a boundary, a minimum value of a curvature of the eyeball-side optical surface is on the same side as the prism base direction (nose side). Since a mean curvature becomes smaller in the prism base direction than a mean curvature of the prism measurement reference point and becomes larger in the opposite direction than the mean curvature of the prism measurement reference point across the prism measurement reference point, deviation in line of sight between right and left eyes is resolved.

Spectacle lens, method for designing spectacle lens, and method for manufacturing spectacle lens

A method for designing, by means of a computer, at least one surface of a lens for a user. The method includes the steps of (i) obtaining displacement information on an amount of displacement between a user specific fitting position and a reference position, the reference position representing a primary fitting point of a lens surface on a reference line of sight of an eye of the user, and the user specific fitting position representing a user specific fitting point of the lens surface determined on the basis of the user; and (ii) causing calculating a design of the at least one surface of the lens on the basis of said displacement information.

Method for designing spectacle lenses, lenses and devices for designing the same

Described herein are methods and systems for customizing and personalizing eyewear. The methods and system consider optimal parameters for each wearer's personal visual situation and configures frames around them.

Method of designing and placing a lens within a spectacles frame

Spectacle lens and method of using a spectacle lens

An aligning prism amount determination device to determine an aligning prism amount for correcting fixation disparity of a spectacle wearer, having the fixation disparity, includes a determiner to determine an aligning prism amount to be uniformly included in the spectacle lens for correcting the fixation disparity, based on a first aligning prism amount obtained by measuring an aligning prism amount of the spectacle wearer at an eye examination distance corresponding to a first distance, a second aligning prism amount obtained by measurement at an eye examination distance corresponding to a second distance shorter than the first distance, and information used for allocation of the first aligning prism amount and the second aligning prism amount, within a prism prescription range between the first aligning prism amount and the second aligning prism amount.

Spectacle lens supply system, program therefor, prism amount determination device, prism amount determination method, and method for producing spectacle lens

A spectacle lens capable of obtaining a good vision without feeling of discomfort, even being fitted into a frame having a large front angle, and a method of creating the shape data of the spectacle lens having dioptric power to be fitted into a frame having a lens front angle. The method corrects the shape data of a lens back surface so that the prismatic effect undergone via the lens of initial lens shape by a plurality of rays passing through a rotation center of the eye in a case where a lens front angle is provided is identical or close to the prismatic effect undergone via the lens of initial lens shape by the plurality of rays passing through the rotation center of the eye in a case where no lens front angle is provided.

Method of compiling shape data of a spectacle lens, spectacle lens shape data compiling device and spectacle lens

A lens supply system has: an initial shape data obtaining unit that obtains initial shape data of a spectacle lens; a shape data correcting unit that corrects the initial shape data such that, when a base curve of an initial lens manufactured based on the initial shape data is defined as a first base curve, a predetermined lens having a second base curve lower than the first base curve is defined as a target spectacle lens, prismatic effects which light rays in respective visual line directions passing through a center of an eye assumed in optical design receive from the initial lens coincide with or approach prismatic effects which the light rays receive from the target spectacle lens; and a spectacle lens manufacturing unit that manufactures a spectacle lens based on the corrected initial shape data.

Spectacle lens, manufacturing method thereof and lens supply system

A prism prescription value acquisition system that includes a calculation part for numerically transforming a fixation disparity amount (unit: angle), which indicates a degree at which the visual axis is shifted from the central fovea of the retina when a subject conducts visual fixation of a target, into a prism prescription value by multiplying the fixation disparity amount by a coefficient when the fixation disparity amount is within &#xb1;4 minutes. Herein, the prism prescription value is calculated according to the following equation: AP=k*FD, AP=k*FDproviding that each of coefficients kand ksatisfies the following conditions: 0.3&#x2266;k&#x2266;0.7, 1.4&#x2266;k&#x2266;2.0.

Prism prescription value acquisition system, acquisition method, acquisition apparatus and program for correcting fixation disparity

There is provided a simulation device including: first blur component generating unit configured to generate a first blur component based on distance data included in observation scene data in which the distance data is added to a computer graphics image, and a parameter regarding the non-progressive component included in the trial lens; second blur component generating unit configured to generate a second blur component based on distance data included in the observation scene data and a parameter regarding a progressive component included in the progressive addition lens; a display blur component generating unit configured to generate display blur component, based on first blur component and second blur component; a display blur component adding unit configured to add display blur component to the observation scene data; and display unit configured to display an observation image obtained by display blur component adding unit, to a wearer wearing the trial lens.

Simulation device, simulation system, simulation method and simulation program

A method includes preparing design variations, which include a plurality of basic design distribution groups different from each other in area-division between a distance vision area and a near vision area, and a plurality of corridor lengths different from each other. Parameters originating from prescription information, life environmental information, frame shape information and the like are input. A basic design distribution group and a corridor length are selected based on the aforesaid information. A lens design standard is obtained based on the selected basic design distribution group and corridor length. As parameters, a distance between a vertex of a rear surface of a right progressive addition lens and a vertex of a cornea of a right eye and a distance between a vertex of a rear surface of a left progressive addition lens and a vertex of a cornea of a left eye are included in setting elements.

Growing community of inventors

Tokyo, Japan

Takashi Hatanaka