ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
发明人:
DROBE Bjoern,NG HWEI KIEN Paulyn,CONTET Aude
申请号：
EA20140001246
公开号：
EA026853(B1)
申请日:
2013.06.28
申请国别(地区):
欧亚专利组织
年份:
2017
代理人:
摘要：
The process comprises determining prescribed far vision mean power and addition for each lens of the pair; determining a reading direction for the wearer; defining a temporal side and a nasal side on each lens of the pair; defining, on each lens being worn and for each gaze direction, a refractive power and a module of resulting astigmatism, each gaze direction corresponding to a lowering angle and to an azimuth angle; defining a proximate vision gaze direction for each lens of the pair; defining, for each lens of the pair, a temporal half-width field of refractive power as the angular distance, at constant lowering angle, between the proximate vision gaze direction and a gaze direction on the temporal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus three quarters of the prescribed addition; defining, for each lens of the pair, a nasal half-width field of refractive power as the angular distance, at constant lowering angle, between the proximate visio
