Invention Publication
- Patent Title: OPHTHALMIC LENS CONFIGURED TO EXHIBIT A CLEAR STATE AND OPTIONALLY A DARK STATE
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Application No.: US17923371Application Date: 2021-05-04
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Publication No.: US20230194898A1Publication Date: 2023-06-22
- Inventor: Ilya BOLSHAKOV
- Applicant: Essilor International
- Applicant Address: FR Charenton-le-Pont
- Assignee: Essilor International
- Current Assignee: Essilor International
- Current Assignee Address: FR Charenton-le-Pont
- Priority: EP 305461.4 2020.05.07
- International Application: PCT/EP2021/061624 2021.05.04
- Date entered country: 2022-11-04
- Main IPC: G02C7/10
- IPC: G02C7/10

Abstract:
The invention relates to an ophthalmic lens configured to exhibit a clear state and optionally at least one darker state. The lens has a front and a rear surface (Cx and Cc) respectively defining a front and a rear side of the lens, the lens having in the clear state (FS) a visual transmittance at an AOI of 0° greater than 81%, the lens comprising: - a substrate having a front and a rear main face respectively adjacent the front and rear surface, and - at least one multilayered interferential coating comprising a front multilayered interferential coating which surmounts the front main face and which comprises at least one absorbing front layer in the visible region. In said clear state, a total visual reflectance for the lens Rv_t_rear from the rear and front surface, measured from the rear side at an AOI of 35°, is less than 5.0%, and in said clear state, the difference Rv_t_front - Rv_t_rear of the total visual reflectance from the rear and front surface, measured from the front side at an AOI of 15°, and of from the rear and front surface, measured from the rear side at an AOI of between 0 and 15°, is greater than 1.0 %.
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