Invention Grant
- Patent Title: Ophthalmic tinted lens
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Application No.: US16969628Application Date: 2019-02-11
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Publication No.: US11644689B2Publication Date: 2023-05-09
- Inventor: Coralie Barrau , Montserrat Burgos , Natalia Schianchi
- Applicant: Essilor International
- Applicant Address: FR Charenton-le-Pont
- Assignee: Essilor International
- Current Assignee: Essilor International
- Current Assignee Address: FR Charenton-le-Pont
- Agency: Nixon & Vanderhye
- Priority: EP 305152 2018.02.15
- International Application: PCT/EP2019/053262 2019.02.11
- International Announcement: WO2019/158464A 2019.08.22
- Date entered country: 2020-08-13
- Main IPC: G02C7/10
- IPC: G02C7/10

Abstract:
An ophthalmic tinted lens has a visual transmission value TV for quantifying a first light intensity ratio which relates to light effective for human vision and transmitted through the lens in daylight condition, and also has a value of a chronobiological factor FC for quantifying a second light amount ratio which relates to light effective for a non-visual physiological effect and also transmitted through the lens in daylight condition. The TV-value and the FC-value expressed as percentage values meet the following condition: FC>1.1×TV+13.0 with 3%≤TV≤43%, or FC>0.7×TV+32 with 43%
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