Invention Grant
- Patent Title: Optical article comprising an antireflective coating with a very low reflection in the visible region
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Application No.: US14902991Application Date: 2013-07-05
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Publication No.: US09772509B2Publication Date: 2017-09-26
- Inventor: Ilya Bolshakov , Francisco De Ayguavives
- 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/EP2013/064322 WO 20130705
- International Announcement: WO2015/000534 WO 20150108
- Main IPC: G02C3/00
- IPC: G02C3/00 ; G02C7/00 ; G02C7/02 ; G02B1/115 ; G02B1/116 ; G02B1/11

Abstract:
This invention relates to an ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive index higher than or equal 1.5 and at least one layer having a refractive index lower than 1.5, such that:—the mean light reflection factor in the visible region Rv is lower than or equal to 0.5% for an angle of incidence lower than 35°;—the Chroma C* is equal or higher than 18, preferably 20, according to the international colorimetric CIE L*a*b* for an angle of incidence (Θ) of 15°.
Public/Granted literature
- US20160154254A1 OPTICAL ARTICLE COMPRISING AN ANTIREFLECTIVE COATING WITH A VERY LOW REFLECTION IN THE VISIBLE REGION Public/Granted day:2016-06-02
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