Seiko Epson Corporation

Hoya Lens Manufacturing Philippines Inc.

Ehs Lens Philippines, Inc.

Seiko Optical Products Co., Ltd.

Tadashi Kaga

Toshihide Shinohara

Kazutoshi Kato

Ayumu Ito

Hiroyuki Mukaiyama

Akira Komatsu

Osamu Wada

Takateru Mori

Kaoru Kamishita

Moriyasu Shirayanagi

Satoshi Kubota

Yohei Suzuki

Masaaki Takeuchi

Hiroshi Asami

There is provided a progressive addition lens for spectacles including a distance portion and a near portion having different powers, wherein an equivalent spherical power of the distance portion is plus; and a first lens and a second lens having different addition powers from each other, and a difference between vertical surface power in the distance portion and vertical surface power in the near portion on an object-side surface of the first lens, and a difference between vertical surface power in the distance portion and vertical surface power in the near portion on an object-side surface of the second lens are the same.

Lens set, method of designing lens and method of manufacturing lens

An optical lens including, an object-side surface including an atoric surface element and an eyeball-side surface including an element that cancels a surface power shift produced by the atoric surface element, wherein the atoric surface element causes horizontal surface power at a fitting point to be greater than vertical surface power at the fitting point and causes a difference between the horizontal surface power and the vertical surface power to decrease along a horizontal reference line passing through the fitting point in a direction from the fitting point toward a periphery of the optical lens or causes a sign of the difference between the horizontal surface power and the vertical surface power to change along the horizontal reference line.

Optical lens, method for designing optical lens, and apparatus for manufacturing optical lens

A progressive-power lens has one surface which satisfies the following expressions()=()()&#x3e;()where CT(DP) denotes a vertical direction curvature at the distance reference point, CY(DP) denotes a horizontal direction curvature, CY(P) denotes a horizontal direction curvature at a point on the principal meridian which is located further on the near portion than the progressive start point, and CT(P) denotes a vertical direction curvature at the point.

Progressive-power lens

A progressive-power spectacle lens design method, the progressive-power spectacle lens including a distance portion, a near portion, and a progressive portion provided between the distance portion and the near portion, the method comprising: decreasing a distance along a principal meridian from a fitting point to a progression start point and increasing a length of a progressive corridor defined by the progression start point and a progression end point when addition power is large, whereas increasing the distance along the principal meridian from the fitting point to the progression start point and decreasing the length of the progressive corridor when the addition power is small, wherein the distance from the fitting point to the progression end point is fixed irrespective of the addition power.

Progressive-power spectacle lens design method

A spectacle lens includes a first region which is located in at least part of a portion of a lens where a pivotal angle of an eyeball of a wearer ranges from 20 to 60 degrees and in which correcting astigmatism has priority over correcting average power based on prescribed power, and a second region which is formed inside the first region and in which correcting the average power has priority over correcting the astigmatism.

Spectacle lens, spectacle lens design method, and design apparatus

An eye-side refractive surfaceof a distance portion is concave and at least part of an eye-side refractive surfaceof a near portion is a convex regionwhere one or both of principal meridians of the surface are convex. This provides a back surface progressive-power lens capable of solving disadvantages in terms of lens thickness, external appearance and the like in a back surface progressive-power lens in which the eye-side refractive surface is formed of a progressive-power surface.

A lens order system, includes: a server unit, including: a data recognizer that recognizes lens design detail data relating to design details of a lens; an image storage that stores object image data relating to an image of an object; an image recognizer that recognizes the object image data based on the lens design detail data; and an order reception section that recognizes order data relating to an order for a designed lens and generates order reception data, and a terminal unit connected with the server unit in a data transmittable manner, the terminal unit including: a data acquiring section that acquires the lens design detail data; a lens design section that designs the lens based on the lens design detail data; an image processor that superposes lens image data relating to an image of the designed lens designed by the lens design section on the object image data sent from the server unit and generates processed image data in which a superposing portion of the object image data and the lens image data is image-processed to provide a vision of the object image data through the designed lens; a display controller that displays the processed image data on a display; and an order section that generates the order data.

Lens order system, lens order method, lens order program and recording medium storing the lens order program

A lens order system, includes: a server unit including: a data recognizer that recognizes lens design detail data on setting details of a lens; an image data recognizer that recognizes image data on an image; a lens design section that designs the lens based on the lens design detail data; an image processor that creates processed image data in which lens image data on an image of the designed lens is superposed on the image data and a superposing portion of the image data and the lens image data is image-processed to show a vision of the image data through the designed lens; and an order reception section that recognizes order data on an order of the designed lens and generates order reception data; and a terminal unit connected with the server unit in a data transmittable manner, the terminal unit including: a data acquiring section that acquires the lens design detail data; a display controller that recognizes and displays on a display the processed image data sent from the server unit; and an order section that generates the order data.

A progressive power lens that prevents degradation in optical characteristics invited by deviation of a pantoscopic angle from the standard value. The lens includes an outer refractive surface and an inner refractive surface, at least one of which is a progressive surface. Because the amount and direction of aberrations generated in distance and near portions are different, correction is given to either or both of the surface powers of the outer and inner surfaces of the lens such that the distance and near portions are differently corrected.

Progressive power lens and method of designing the same

A spectacle lens design method for designing a spectacle lens, including setting a distance portion, a near portion, and a progressive portion which is disposed between the distance portion and the near portion; adding astigmatic power for canceling aberration produced by a bend angle of the spectacle frame; determining an aspherical surface addition quantity; and adding prismatic power for canceling prismatic power produced by the bend angle of the spectacle frame at the design reference point of the distance portion to the entire distance portion and prismatic power for cancelling prismatic produced by the bend angle of the spectacle frame at the design reference point of the near portion to the entire near portion on either the object side refractive surface or the eyeball side refractive surface of the spectacle lens.

Spectacle lens design method

A method for designing a spectacle lens that includes an optical convex surface on an object side of the spectacle lens and an optical concave surface on an eye side of the spectacle lens and is mounted in a spectacle frame in a manner tilting with respect to a forward sight line, the optical convex surface being spherical, the optical concave surface being optically curved according to a prescription, the method including: defining a design reference point at an intersection of the optical concave surface and the forward sight line; and determining an angle formed by a tangent line at the design reference point and a perpendicular plane perpendicular to the forward sight line as a lens tilt angle &#x3b8; with which the spectacle lens is mounted in the spectacle frame.

Method for designing spectacle lens, and spectacles

A combined spectacle lens including a combination of a basic lens and an auxiliary lens, the basic lens formed with a progressive-power surface having a first power portion having a power for viewing an object at a predetermined distance, a second power portion having a power different from that in the first power portion, and a progressive portion in which the power is progressively changed from the first power portion to the second power portion on either one or both of refractive surfaces on an object side and an eyeball side, wherein a resultant power obtained by combining a basic lens power of the basic lens and an auxiliary lens power of the auxiliary lens is partly or entirely different from that of the basic lens power.

Combined spectacle lens, auxiliary lens, and method of edging lenses

A method of correcting the effects of a bend angle of 200 degrees or larger of spectacle frames, and astigmatism correcting characteristics in such spectacle frames. An exemplary embodiment of the present invention includes a design method for a spectacle lens mounted in a spectacle frame having a bend angle of 200 degrees or larger including an astigmatic power adding step, on the object side refractive surface or eyeball side refractive surface of the spectacle lens, for canceling astigmatic aberration caused by the bend angle of the spectacle frame, at a design reference point of the spectacle lens, and a step setting prismatic power by tilting the refractive surface, which is on an object side or an eyeball side, of the spectacle lens for canceling prismatic power caused by the bend angle of the spectacle frame, at the design reference point of the spectacle lens.

Growing community of inventors

Minowa-machi, Japan

Tadashi Kaga