发明名称 DEVICE AND METHOD FOR PRODUCING SPECTACLE LENSES FOR ASTIGMATISM
摘要 Defining left and right pseudo prescribed lenses, a reference lens common to left and right and a reference object surface common to the left and right including a plurality of object surfaces; calculating a ratio between a distance from an intersection between a visual line in a front view and the reference lens to a chief ray passing position on the reference lens and a distance from an intersection between the visual line in the front view and the pseudo prescribed lens to the chief ray passing position on the pseudo prescribed lens; correcting, for each of the left and the right, a curvature distribution of the pseudo prescribed lens by correcting, based on the ratio, curvature at the chief ray passing position on the pseudo prescribed lens corresponding to each point on each of the plurality of object surfaces; and correcting, for each of the left and the right, curvature distribution of the prescribed lens based on the corrected curvature distribution of the pseudo prescribed lens.
申请公布号 EP2937727(A1) 申请公布日期 2015.10.28
申请号 EP20130864072 申请日期 2013.11.28
申请人 HOYA CORPORATION 发明人 KOZU, KAZUMA
分类号 G02C7/02;G02C7/06 主分类号 G02C7/02
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