发明申请
US20130265540A1 METHOD FOR CALCULATING A SPECTACLE LENS WITH IMPROVED NEAR ZONE 有权
用于计算具有改进的近区域的透镜的方法

METHOD FOR CALCULATING A SPECTACLE LENS WITH IMPROVED NEAR ZONE
摘要:
Optimization and production of a spectacle lens for a specific wearing situation for correcting at least one astigmatic refraction of an eye of a spectacles wearer, which in a reference viewing direction of the eye has a cylinder reference value and a cylinder reference axis, comprising: specifying an object distance for at least one evaluation point of the spectacle lens; determining a transformed astigmatic refraction for the at least one evaluation point of the spectacle lens from the cylinder reference value and the cylinder reference axis depending on the specified object distance; and optimizing the spectacle lens such that for the at least one evaluation point a correction of the transformed astigmatic refraction by the spectacle lens in the specific wearing situation is taken into consideration, wherein determining the transformed astigmatic refraction comprises determining a transformed cylinder value and/or a transformed cylinder axis depending on the specified object distance.
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