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The farsightedness degree which has the one for promotive refraction labored work being split and being distributed with by the 2nd refraction
The farsightedness degree which has the one for promotive refraction labored work being split and being distributed with by the 2nd refraction
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机译：具有促进屈光度劳动成果的远见度由第二次屈光度分配与分配
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摘要
PROBLEM TO BE SOLVED: To provide a progressive refracting power spectacles lens capable of identifying the right, left, top and bottom without using a special mark or conducting a cumbersome measurement.;SOLUTION: In a semifinished lens 10 for the progressive refracting power spectacles lens, one surface is an aspheric optical surface that gives the progressive refracting power, and the other surface is non-optical. Marks 11 and 12 are provided on the optical surface which can identify the top and bottom and/or right and left of the progressive refracting power spectacles lens 10.;COPYRIGHT: (C)2008,JPO&INPIT
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