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    • 2. 发明授权
    • Progressive multifocal lens and manufacturing method therefor
    • 渐进多焦点镜片及其制造方法
    • US5886766A
    • 1999-03-23
    • US656291
    • 1996-06-06
    • Tadashi KagaKazutoshi Kato
    • Tadashi KagaKazutoshi Kato
    • G02C7/02G02C7/06
    • G02C7/061G02C7/06
    • In a process of determining the surface shape of each of progressive multifocal lenses for use as lenses in eyeglasses, radii of curvature at main points are calculated, and then the surface is divided into a plurality of lattice sections, and then a curved-surface equation in the form of a bicubic expression is used for each section to determine the surface shape of the lens. A coefficient of each of the bicubic expressions is determined under a condition that continuation is established to curved-surface equations of sections adjacent at a boundary line between the sections to the derivatives of second order. Therefore, the surface shape of the lens obtained by the curved-surface equation for each section can be formed into a continuous and smooth surface. Since the curved surface can be determined for each section, a partial correction can easily be performed, if necessary. As a result, a progressive multifocal lens can be provided which exhibits smooth astigmatism curves and a large clear field of vision to meet a variety of specifications. Thus, lenses for eyeglasses each having a clear field of vision can be provided.
    • 在确定用作眼镜中的透镜的每个渐变多焦点透镜的表面形状的过程中,计算主要点处的曲率半径,然后将该表面分成多个格子部分,然后将曲面方程式 以双三次表达的形式用于每个部分以确定透镜的表面形状。 在对二阶导数之间的边界线相邻的部分的曲面方程式建立连续性的条件下确定每个双三次表达式的系数。 因此,通过每个部分的曲面方程获得的透镜的表面形状可以形成为连续且平滑的表面。 由于可以为每个部分确定弯曲表面,所以如果需要,可以容易地执行部分校正。 结果,可以提供渐进多焦点透镜,其显示光滑的散光曲线和大的清晰视野以满足各种规格。 因此,可以提供各自具有清晰视野的眼镜的镜片。
    • 3. 发明授权
    • Progressive-power lens and progressive-power lens design method
    • 渐进式功率透镜和渐进式透镜设计方法
    • US08777407B2
    • 2014-07-15
    • US13403895
    • 2012-02-23
    • Kazutoshi KatoYohei Suzuki
    • Kazutoshi KatoYohei Suzuki
    • G02C7/06G02C7/02
    • G02C7/068G02C7/027G02C2202/08
    • A progressive-power lens includes an eyeball-side surface including a distance portion and a near portion having different values of dioptric power. An intermediate portion connects the distance portion and the near portion to each other. An object-side surface of the progressive-power lens includes a first region extending along a principal meridian and having a spherical shape having first curvature, a second region facing the distance portion and having a spherical shape having second curvature equal to the first curvature, and a third region located outside the first region and below the second region and having third curvature greater than the first curvature.
    • 渐进屈光力镜片包括眼球侧表面,其包括距离部分和具有不同的屈光度值的近部分。 中间部分将距离部分和近部分彼此连接。 渐进屈光力透镜的物体侧表面包括沿着主子午线延伸并具有第一曲率的球形的第一区域,与距离部分相对的第二区域,具有等于第一曲率的第二曲率的球形, 以及第三区域,其位于第一区域的外部并且位于第二区域的下方,并且具有大于第一曲率的第三曲率。
    • 4. 发明授权
    • Method of designing progressive power lens group
    • 渐进屈光力透镜组的设计方法
    • US07364292B2
    • 2008-04-29
    • US11370928
    • 2006-03-09
    • Kazutoshi Kato
    • Kazutoshi Kato
    • G02C7/06
    • G02C7/063G02C7/024G02C7/061G02C2202/08
    • A method of designing a progressive power lens group as a set of progressive power lenses, each having a first refractive section having a refractive power for seeing an object located at a predetermined distance, a second refractive section having a refractive power for seeing an object located at a near distance, and a progressive section with its refractive power progressively changing from the first refractive section to the second refractive section, the progressive power lens group satisfying: a condition where the first refractive sections differing in refractive power can be selected; a condition where at least two additions can be selected for the first refractive section having an identical refractive power; a condition where refractive indexes of materials of the progressive power lenses are identical; and a condition where design concepts of the progressive power lenses are standardized, the method includes designing the progressive power lenses so that for the progressive power tenses identical in addition, the smaller the refractive power of the first refractive section is, the shorter a distance in a vertical direction between a fitting point and a refractive power measurement point of the second refractive section is, and for the progressive power lenses identical in the refractive power of the first refractive section, the larger the addition is, the longer the direction in the vertical direction between the fitting point and the refractive power measurement point of the second refractive section is.
    • 一种将渐进屈光力透镜组设计为一组渐进屈光力透镜的方法,每一个具有用于观察位于预定距离处的物体的折射力的第一折射部分,具有用于观察物体的折射力的第二折射部分 并且其渐变部分的折射力从第一折射部分逐渐变化到第二折射部分,渐进屈光力透镜组满足:可以选择折射力不同的第一折射部分的条件; 对于具有相同屈光力的第一折射区域可以选择至少两个添加物的条件; 渐进屈光力镜片的材料的折射率相同的条件; 以及逐行功率透镜的设计概念被标准化的条件,该方法包括设计渐进式功率透镜,使得对于渐进式时态相同,第一折射部分的折射力越小,距离越短 在第二折射部分的拟合点和屈光度测量点之间的垂直方向是,并且对于与第一折射部分的折射力相同的渐进屈光力镜片,相加越大,垂直方向越长 第二折射部分的拟合点和屈光力测量点之间的方向为。
    • 5. 发明申请
    • Progressive refractive power lens and production method therefor
    • 渐进屈光力镜片及其制作方法
    • US20050146681A1
    • 2005-07-07
    • US10509494
    • 2004-03-30
    • Kazutoshi Kato
    • Kazutoshi Kato
    • G02C7/06G02C7/02
    • G02C7/068
    • A progressive power lens is conventionally so designed that a distance portion and a near portion are linked together in a successive manner, and thus framing cannot be done in a manner as to fully achieve the best optical properties of the near portion. The present invention provides, on the other hand, a progressive power lens that is designed to make the near portion closer to an eyeball without impairing the optical properties of the progressive power lens. Accordingly, both the distance portion and the near portion can be framed with the ideal fitting, and the resulting eyeglasses can be less in distortion and fluctuation.
    • 通常,渐进屈光力透镜被设计成使得距离部分和近部分以连续的方式连接在一起,因此框架不能以完全实现近部分的最佳光学性质的方式进行。 另一方面,本发明提供了一种渐进屈光力镜片,其被设计成使得靠近眼球的部分更接近而不损害渐进屈光力镜片的光学特性。 因此,距离部分和近部分都可以用理想的配合构成,并且所得到的眼镜的变形和波动可以较小。
    • 6. 发明授权
    • Multifocal lens for eyeglass and eyeglass lens
    • 眼镜和眼镜镜片的多焦点镜头
    • US5926250A
    • 1999-07-20
    • US894505
    • 1997-07-24
    • Hiroyuki MukaiyamaKazutoshi KatoAkira KomatsuTadashi Kaga
    • Hiroyuki MukaiyamaKazutoshi KatoAkira KomatsuTadashi Kaga
    • G02C7/02G02C7/06
    • G02C7/061G02C7/06G02C7/068
    • In a multifocal lens for eyeglass provided with visual field areas having different refractive powers, being a distance-vision area and a near-vision area, a multifocal lens for eyeglass (10) is provided, in which the difference of the average surface power D11 of the distance-vision area (11) of the surface (2) on the side of the object and the average surface power D12 of the near-vision area (12) is made mathematically less than the addition power Add. Furthermore, a specific addition power Add is provided by adjusting the average surface power D21 of the distance-vision area of the surface (3) on the side of the eye and the average surface power D22 of the near-vision area. It becomes possible to adjust the average surface powers D11 and D12 of the surface (2) on the side of the object such that the difference of magnification of the distance-vision area and the near-vision area becomes little. Furthermore, it is also possible to make the difference of the average surface powers D11 and D12 of the surface (2) on the side of the object little. Consequently, a multifocal lens can be provided, whereby a comfortable visual field can be obtained, in which there is little jumping and warping of images due to the difference of magnification, and furthermore, the clear-vision area having improved astigmatic aberration is wide, and there is little jumping of images, and the like.
    • PCT No.PCT / JP96 / 03418 Sec。 371日期:1997年8月8日 102(e)日期1997年8月8日PCT 1996年11月21日PCT PCT。 WO97 / 19383 PCT公开号 日期1997年5月29日在具有不同屈光力的视野区域的眼镜用多焦点镜片中,作为远视区域和近视区域,设置有用于眼镜(10)的多焦点镜片, 物体侧的表面(2)的距离视野区域(11)的平均表面光焦度D11和近视区域(12)的平均表面光焦度D12在数学上小于加法功率Add。 此外,通过调整眼睛侧的表面(3)的距离视觉区域的平均表面光焦度D21和近视区域的平均表面光焦度D22,提供特定的附加功率Add。 可以调整物体侧的表面(2)的平均表面光焦度D11和D12,使得距离视野区域和近视野区域的倍率差变小。 此外,还可以使物体侧的表面(2)的平均表面光焦度D11和D12的差很小。 因此,可以提供多焦点透镜,由此可以获得舒适的视野,其中由于放大率的差异,图像的跳跃和翘曲很少,此外,具有改善的散光像差的清晰视野区域很宽, 而且还有很少的图像跳转等等。