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    • 8. 发明申请
    • METHOD FOR REPRESENTING AND OPTIMISING A DOUBLE-PROGRESSIVE SPECTACLE LENS
    • 程序显示和双重渐进眼镜片的优化
    • WO02061496A3
    • 2003-04-03
    • PCT/DE0200391
    • 2002-02-04
    • RODENSTOCK OPTIK GHAIMERL WALTERPFEIFFER HERBERTESSER GREGORALTHEIMER HELMUTWELK ANDREABAUMBACH PETER
    • HAIMERL WALTERPFEIFFER HERBERTESSER GREGORALTHEIMER HELMUTWELK ANDREABAUMBACH PETER
    • G02C7/02
    • G02C7/068G02C7/027G02C7/061
    • The invention relates to a method for representing and optimising a double-progressive spectacle lens. Said method is characterised by the following steps: a suitable co-ordinates system K2 is selected for representing the rear surface; a suitable grid G is selected for representing the spline of the rear surface of a starting lens to be optimised in K2; the sagittal data of the rear surface (rear surface spline) is applied to a spline; the position of the centre of rotation of the eye is defined; the main beams from the centre of rotation of the eye through the starting lens to the grid points of G are examined; the length of the distance between the piercing points of the main beam examined, through the front surfaces and the rear surfaces (diagonal thickness) is calculated; the data of the diagonal thickness is applied to a spline (thickness spline); a set of evaluation points is selected, by which means the optical quality is calculated for the target function; certain optical and geometric standards which ideally correspond to the evaluation points are suitably selected; the target function is defined as a deviation from the quality of current spectacle lenses in terms of said ideal values; the optimisation is initiated; at each optimisation step, the optical properties in the position of use at the evaluation points are evaluated by means of the surface properties to be calculated and current main beam data; the optimisation is completed when the target function is below a certain value, or at the end of a pre-definable maximum number of optimisation steps.
    • 公开的是用于显示和Optimierrung deppelprogressiven的眼镜镜片,其特征在于以下步骤的方法:选择用于所述背表面的表示的合适的坐标系K2; 选择合适的栅极G为起始玻璃在K2被优化的背面的花键的表示; 可用性与背面(Rückflächenspline)的弧矢高度数据的花键的; 眼睛转动点的位置的定义; 通过从通过在G的网格点的起始玻璃眼睛转动点的主光线的计算; 通过前表面和后表面(倾斜的厚度)计算只是计算主射线的穿透点之间的距离的长度; 可用性与倾斜厚度(Dickenspline)的数据的花键的; 选择一组在其中光学质量为目标函数计算出的评价点; 的某些光学和几何要求,其在理想情况下的评价点要达到适当的选择; 定义目标函数从这些理想值的当前眼镜镜片的质量的偏差; 启动优化; 在每个优化评估由所述表面特性要被计算与实际主光线数据的装置的步骤中,在所述评价点使用位置的光学特性; 结束优化当目标功能已经下降到低于某一值时,或的优化步骤可预定的最大数目后。