ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
发明人:
Stephane Boutinon,Vincent Tejedor Del Rio,Michel Nauche
申请号：
US15302379
公开号：
US10492676B2
申请日:
2015.04.07
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A refractor (100) includes: an enclosure having a front face containing a first optical window and a back face containing a second optical window aligned with the first optical window along an optical axis of observation； and at least one vision compensating device making it possible to observe along the optical axis of observation. The vision compensating device includes, between the first window and the second window, a first optical element having a spherical power along the optical axis, the spherical power being variable. The enclosure is mounted on an orientable holder (104) that is rotatable relative to a stationary portion (102) about a horizontal axis (H). A method for measuring refraction employing such a refractor is also disclosed.
