Invention Grant
- Patent Title: Ophthalmic progressive addition lens for an emmetropic and presbyopic wearer and method of providing same
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Application No.: US15767048Application Date: 2016-10-11
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Publication No.: US10852563B2Publication Date: 2020-12-01
- Inventor: Melanie Heslouis , Benjamin Rousseau , Sebastien 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: EP15306646 20151015
- International Application: PCT/EP2016/074290 WO 20161011
- International Announcement: WO2017/064032 WO 20170420
- Main IPC: G02C7/02
- IPC: G02C7/02 ; G02C7/06

Abstract:
An ophthalmic progressive addition lens for an emmetropic and presbyopic wearer having a mean refractive power, PPO(α, β), a module of resulting astigmatism, ASR(α, β), an acuity loss value ACU(α, β), wherein the (α, β) functions are determined in as-worn conditions of the lens by the wearer, and a first acuity criterion, AcuityCriterion1 which fulfils following requirement: AcuityCriterion1≥435 D2.deg2, and wherein: AcuityCriterion1 is defined as a combination of PPO(α, β), ASR(α, β), ADDp, and ACU(α, β).
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