Patent ID: 9523864
Filing Date: 2016-12-20
CPC Classification: G02C

Claim Text:
1. A method for manufacturing a progressive ophthalmic lens, the lens comprising a main meridian ( 32 ) separating the lens in a nasal area (Area_nasal) and a temporal area (Area_temporal), the method comprising the steps of determining the lens by: choosing a target optical function suited to a wearer, the target optical function defining, for each gaze direction when the lens is worn, a refractive power (P defining a front surface of the lens and a rear surface of the lens, each surface having in each point a mean sphere value (SPH defining at least one first portion (Portion for at least one of the first or the second portion of the front surface (Portion modifying the front surface so that: over the first portion (Portion over the second portion (Portion the method further comprising manufacturing the progressive ophthalmic lens having the modified front surface.