Invention Grant
- Patent Title: Progressive ophthalmic lens
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Application No.: US17291362Application Date: 2019-12-19
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Publication No.: US12061382B2Publication Date: 2024-08-13
- Inventor: Laurent Calixte , Sébastien Fricker
- Applicant: Essilor International
- Applicant Address: FR Charenton-le-pont
- Assignee: Essilor International
- Current Assignee: Essilor International
- Current Assignee Address: FR Charenton-le-pont
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP 306787 2018.12.21
- International Application: PCT/EP2019/086346 2019.12.19
- International Announcement: WO2020/127763A 2020.06.25
- Date entered country: 2021-05-05
- Main IPC: G02C7/06
- IPC: G02C7/06 ; G02C7/02

Abstract:
A progressive ophthalmic lens adapted to a wearer in given wearing conditions having an addition and fulfilling an acuity performance criterion determined by: defining a set of at least three different vision distances including at least a first vision distance greater than or equal to 4 m, a second vision distance greater than or equal to 0.6 m and smaller than or equal to 2 m and a third vision distance smaller than or equal to 0.5 m, each vision distance being associated with an acuity loss threshold value and an acuity area threshold value, providing an acuity model defining acuity loss as a function of lens power and resulting astigmatism, determining of each vision distance using the acuity model the area of gaze directions for which the acuity loss is below the associated acuity loss threshold value.
Public/Granted literature
- US20220004027A1 A PROGRESSIVE OPHTHALMIC LENS Public/Granted day:2022-01-06
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