Invention Grant
- Patent Title: Transparent optical article having a colorless appearance
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Application No.: US15107704Application Date: 2014-12-22
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Publication No.: US10203524B2Publication Date: 2019-02-12
- Inventor: Gilles Baillet
- Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Applicant Address: FR Charenton-le-Pont
- Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Current Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Current Assignee Address: FR Charenton-le-Pont
- Agency: Norton Rose Fulbright US LLP
- Priority: EP13306853 20131223
- International Application: PCT/EP2014/079074 WO 20141222
- International Announcement: WO2015/097186 WO 20150702
- Main IPC: G02C7/10
- IPC: G02C7/10 ; G02B1/04 ; G02B1/10

Abstract:
The present invention relates to a transparent optical article comprising at least one dye at least partially inhibiting light having a wavelength ranging from 400 to 460 nm and at least one selective optical brightener that emits light by fluorescence at a wavelength ranging from 400 to 460 nm. The optical brightener acts as a means for at least partially balancing the color imparted to the transparent optical article by the dye, thus allowing for perception of said optical article as less yellow, and even colorless to an user or an observer.
Public/Granted literature
- US20160320636A1 Transparent Optical Article Having a Colorless Apperance Public/Granted day:2016-11-03
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