公开(公告)号：US20040008320A1

公开(公告)日：2004-01-15

申请号：US10615191

申请日：2003-07-09

Applicant: PENTAX Corporation

Inventor： Moriyasu Shirayanagi

IPC: G02C007/06

CPC classification number: G02C7/06 ,  G02C7/061 ,  G02C7/068

Abstract: There is provided a multifocal spectacle lens having a front surface and a back surface each of the front surface and the back surface is formed as a multifocal surface or a progressive-power surface, distributions of surface power of the front surface and the back surface being different from each other.

Abstract translation: 提供一种具有前表面和后表面的前表面和后表面的多焦点眼镜透镜，其形成为多焦点表面或渐进屈光力表面，前表面和后表面的表面光焦度分布为 彼此不同。

公开(公告)号：US20040174494A1

公开(公告)日：2004-09-09

申请号：US10790541

申请日：2004-03-02

Applicant: PENTAX Corporation

Inventor： Moriyasu Shirayanagi

IPC: G02C007/02

CPC classification number: G02C7/02 ,  G02B3/0081

Abstract: There is provided a spectacle lens having an outer surface and an inner surface, one of the outer and inner surfaces being configured to be a rotationally-asymmetrical aspherical surface. When a curvature at a coordinate (h,null) of the outer surface is represented by C1(h,null), a curvature at a coordinate (h,null) of the inner surface is represented by C2(h,null), and a difference between curvatures of the outer surface and the inner surface at the coordinate (h,null) is represented by C2-1(h,null)nullC2(h,null)nullC1(h,null), if C2-1(0,null)>0, within the ranges of 10 mmnullhnullmmnullnull20 mm and 30nullnullnullnullnullnullnull150null the spectacle lens satisfying a condition (1): C2-1(h,nullnull180)nullC2-1(h,null)>0 nullnull(1), and if C2-1(0,null)

Abstract translation: 提供了具有外表面和内表面的眼镜镜片，外表面和内表面中的一个被配置为旋转非对称的非球面。 当外表面的坐标（h，θ）处的曲率由C1（h，θ）表示时，内表面的坐标（h，θ）处的曲率由C2（h，θ）表示， 如果C2-1（h，θ）= C2（h，θ）-C1（h，θ），则表示坐标（h，θ）处的外表面和内表面的曲率之间的差异 （0，θ）> 0，在满足条件（1）的眼镜镜片的范围内为10mm：= [mm] <= 20mm和30°<=θ[°] <= 150°：C2-1 （h，θ+ 180）-C2-1（h，θ）> 0（1），如果C2-1（0，θ）<0，则满足条件（2）的眼镜：C2-1（h ，θ+ 180）-C2-1（h，θ）<0（2）。

公开(公告)号：US20040109134A1

公开(公告)日：2004-06-10

申请号：US10685389

申请日：2003-10-16

Applicant: PENTAX Corporation

Inventor： Hiroshi Sato ,  Chikara Yamamoto ,  Moriyasu Shirayanagi

IPC: G02C007/06

CPC classification number: G02C7/063 ,  G02C7/061 ,  G02C7/066 ,  G02C2202/08

Abstract: A progressive power lens belonging to a series of lenses according to the present invention is provided. If a first lens and a second lens randomly chosen from the series of progressive power lenses have a common spherical refractive power Sph nulldiopternull in the distance portions thereof, the Sph is greater than or equal to null1, and a base curve BC1 of the first lens is smaller than a base curve BC2 of the second lens, the first and second lenses satisfy a condition: 1 Wds null ( BC 1 , Sph ) Wns null ( BC 1 , Sph ) Wdt null ( BC 1 , Sph ) Wnt null ( BC 1 , Sph )

公开(公告)号：US20030123025A1

公开(公告)日：2003-07-03

申请号：US10268755

申请日：2002-10-11

Applicant: PENTAX Corporation

Inventor： Moriyasu Shirayanagi

IPC: G02C007/06

CPC classification number: G02C7/066 ,  G02C7/061 ,  G02C7/068 ,  G02C2202/10

Abstract: A progressive-power spectacle lens includes a distance portion having a dioptric power for distance vision, a near portion having a dioptric power for near vision, and an intermediate portion having a progressive dioptric power between the distance portion and the near portion. At least one of front and back surfaces is formed as a progressive-power surface whose dioptric power varies depending upon a position thereon. The spectacle lens has a prismatic effect including a prescribed prismatic effect and unprescribed prismatic effect. A shape of the progressive-power surface of the spectacle lens is different from a shape of a progressive-power surface of a reference lens that is defined as a lens identical to the spectacle lens except that the prescribed prismatic effect is eliminated. The progressive surface of the spectacle lens is configured to compensate for aberration that is caused if the prescribed prismatic effect is added in the reference lens.