Benjamin ROUSSEAU,Melanie HESLOUIS,Sebastien FRICKER,Nacer LAKHCHAF,Guilhem ESCALIER,Thierry BONNIN,Isabelle POULAIN,Valerie JOLIVET,Juliette WIERZBICKI
申请号：
US15767814
公开号：
US20180307059A1
申请日:
2016.10.11
申请国别(地区):
US
年份:
2018
代理人:
摘要：
An ophthalmic progressive addition lens for a myopic or emmetropic presbyopic wearer which has a prescribed far vision mean refractive power and a non nil prescribed addition, ADDp, the lens having a far vision reference point, a mean refractive power, PPO(α, β), a module of resulting astigmatism, ASR(α, β), a meridian line, ML(α, β), the (α, β) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (α, β) joining the center of rotation of the eye, CRE, and the lens, wherein α is a lowering angle in degree and β is an azimuth angle in degree, and wherein a lens criterion, A1/A2, fulfils: A1/A2≥0.50, wherein: A1=α100%−α85%； A2=α100%−α60%.
