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    • 8. 发明授权
    • Method for representing and optimizing a double-progressive spectacle lens
    • 用于表示和优化双渐进眼镜镜片的方法
    • US07021763B2
    • 2006-04-04
    • US10470968
    • 2002-02-04
    • Andrea WelkPeter BaumbachWalter HaimerlHerbert PfeifferGregor EsserHelmut Altheimer
    • Andrea WelkPeter BaumbachWalter HaimerlHerbert PfeifferGregor EsserHelmut Altheimer
    • G02C7/02
    • G02C7/068G02C7/027G02C7/061
    • A method for representing and optimizing a double-progressive spectacle lens is characterized by the following steps: selecting a suitable coordinate system K2 for the representation of a back surface; selecting a suitable grid G for the representation of a spline of the back surface of a starting lens to be optimized in a coordinate system K2; assigning sagittal height data of the back surface to a spline (back surface spline); defining a position of a center of rotation of an eye; computing principal rays from the center of rotation of the eye through the starting lens at grid points of G; computing a length of a distance between points of penetration of a thus computed principal ray through a front surface and the back surface (oblique thickness); assigning data of the oblique thickness (thickness spline) to a spline; selecting a set of assessment positions at which an optical quality is computed for a target function; suitably selecting particular optical and geometrical stipulations which ideally should be satisfied at the assessment positions; defining the target function as a deviation of the quality of an actual spectacle lens from ideal values; starting the optimization; evaluating at each one of optimization steps the optical properties in a wearing position at the assessment points by means of surface properties to be computed and actual principal ray data; ending the optimization when the target function is below a particular value, or after a specifiable maximum number of optimization steps.
    • 用于表示和优化双渐进式眼镜镜片的方法的特征在于以下步骤:为后表面的表示选择合适的坐标系K2; 选择合适的网格G用于在坐标系K2中优化的起始透镜的后表面的样条的表示; 将背面的矢状高度数据分配给花键(后表面花键); 限定眼睛的旋转中心的位置; 在G的格点处计算来自眼睛旋转中心的主光线通过起始镜头; 计算通过前表面和后表面的如此计算的主光线的穿透点之间的距离的长度(倾斜厚度); 将倾斜厚度(厚度样条)的数据分配给花键; 选择一组评估位置,在该位置处计算目标函数的光学质量; 适当地选择在评估位置理想地满足的特定光学和几何规定; 将目标函数定义为实际眼镜片的质量与理想值的偏差; 开始优化; 在每个优化步骤中通过要计算的表面性质和实际主光线数据在评估点处的佩戴位置的光学性质进行评估; 当目标函数低于特定值时,或在可指定的最大数量的优化步骤之后结束优化。
    • 10. 发明授权
    • Series of lenses
    • 系列镜片
    • US5854669A
    • 1998-12-29
    • US553499
    • 1996-03-21
    • Helmut AltheimerNorbert AwrathRudolf BarthPeter BaumbachJochen BrosigGregor EsserMonika FuessGuenther GuilinoWalter HaimerlChristine MeixnerHerbert PfeifferManfred Rohrbach
    • Helmut AltheimerNorbert AwrathRudolf BarthPeter BaumbachJochen BrosigGregor EsserMonika FuessGuenther GuilinoWalter HaimerlChristine MeixnerHerbert PfeifferManfred Rohrbach
    • G02C7/06G02C7/02
    • G02C7/065G02C7/061G02C2202/08
    • The present description refers to a series of progressive lenses, wherein the lenses present a different surface power in the distance-vision part and/or a different increase of the surface power from the distance-vision part towards the near-vision part (termed addition Add hereinafter), and whereof each comprises a front surface having a continuously varying surface power which increases from the respective value BK �dpt!, which is suitable for distance vision, at the point having the coordinates x=0 mm, y=8 mm in the lower region of the distance-vision part along a wound line (primary line), which coincides approximately with the primary line of view, with eyes dropped, towards a value suitable for near vision in the upper region of the near-vision part, which value is greater than the value of the surface power BK in the lower region of the distance-vision part by the value ADD �dpt! of the addition, and having a surface, in particular the surface on the concave side, which has a spherical shape or an aspherical shape, respectively. The present invention is characterized by the aspects that for the maximum height y of the line on which the surface astigmatism is 0.5 dpt and which defines the lower limit of the region suitable for clear vision on either side of the primary line at a distance of 25 mm, applies: y=f(Add,BK)=b(BK)+a/Add*1000) b(BK)=a.sub.0 +a.sub.1 *BK+a.sub.2 *BK.sup.2 and that for the coefficients on the nose side and the temporal side of the primary line applies: ______________________________________ nose side temporal side ______________________________________ a -8.5 .+-. 20% -7.5 .+-. 20% a.sub.0 18...19 mm 19...20 a.sub.1 -3580 .+-. 29% mm.sup.2 -4520 .+-. 20% mm.sup.2 a.sub.2 390 000 .+-. 20% mm.sup.3 480 000 .+-. 20% mm.sup.3. ______________________________________
    • PCT No.PCT / DE95 / 00438 Sec。 371日期1996年3月21日 102(e)1996年3月21日PCT 1995年3月30日PCT PCT。 WO95 / 27229 PCT公开号 日期1995年10月12日本说明书涉及一系列渐进透镜,其中透镜在距离视觉部分中呈现不同的表面光焦度和/或从远距离视觉部件向近距离视觉部件的表面光焦度的不同增加, 视觉部分(以下称为附加添加),并且其中每个包括具有连续变化的表面光焦度的前表面,其从坐标x = 0mm的点处适合于距离视觉的相应值BK [dpt]增加 ,沿着绕线(主线)的距离视觉部分的下部区域中的y = 8mm,其大致与主视线重合,眼睛下降,朝向适合于在上部区域的近视力的值 该远视觉部分的值大于距离视觉部分的下部区域中的表面光焦度BK的值,该值为加法的值ADD [dpt],并且具有表面,特别是表面 凹的 ide,其分别具有球形或非球面形状。 本发明的特征在于,对于表面散光为0.5dpt的线的最大高度y,并且限定适于在主线两侧的清晰视野的区域的下限,距离为25 mm,适用:y = f(Add,BK)= b(BK)+ a / Add * 1000)b(BK)= a0 + a1 * BK + a2 * BK2,鼻子侧和时间 主线适用: - 鼻侧颞侧 - a -8.5 +/- 20%-7.5 +/- 20% - a0 18 ... 19 mm 19 ... 20 - a1 -3580 +/- 29% mm2 -4520 +/- 20%mm2 - a2 390 000 +/- 20%mm3 480 000 +/- 20%mm3。 -