- Patent Title: Transparent optical article having a reduced yellowness appearance
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Application No.: US15107743Application Date: 2013-12-23
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Publication No.: US10114234B2Publication Date: 2018-10-30
- Inventor: Aref Jallouli , Haifeng Shan , 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
- International Application: PCT/IB2013/003002 WO 20131223
- International Announcement: WO2015/097492 WO 20150702
- Main IPC: G02C7/10
- IPC: G02C7/10 ; G02B1/04 ; G02B1/10

Abstract:
The present invention relates to a transparent optical article (e.g. an ophthalmic lens) comprising a thermoplastic substrate and a dye at least partially inhibiting light having a wavelength ranging from 400 to 460 nm and an optical brightener for at least partially balancing the color imparted to the transparent optical article by the dye, wherein said optical brightener emits light by fluorescence at a wavelength ranging from 400 to 460 nm and is incorporated into a layer fused or bonded to the thermoplastic substrate. Said optical brightener allows for perception of said optical article as less yellow, and even colorless, to a user or to an observer. In addition, the UV-absorbers that may be present in the thermoplastic substrate do not negatively interact with the optical brightener.
Public/Granted literature
- US20160320638A1 Transparent Optical Article Having a Reduced Yellowness Appearance Public/Granted day:2016-11-03
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