Invention Application
- Patent Title: METHOD FOR OBTAINING AN OPHTHALMIC LENS
- Patent Title (中): 获得眼科镜片的方法
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Application No.: US14352447Application Date: 2012-11-14
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Publication No.: US20140240663A1Publication Date: 2014-08-28
- Inventor: Mathieu Meynen
- 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
- Priority: FR1160664 20111122
- International Application: PCT/FR2012/052620 WO 20121114
- Main IPC: G02C7/00
- IPC: G02C7/00

Abstract:
A method for obtaining an ophthalmic lens, includes: —the step of selecting a material that displays a threshold of pinhole formation during a machining step of a finished surface (20) in a material-removing depth (D) of 0.07 mm, which is at least 15% higher than the threshold of pinhole formation during a machining step of a finished surface in a material-removing depth (D) of 0.22 mm; —the step of selecting a set point for finishing depth of cut (A) between 0.015 mm and 0.075 mm; and—the step of selecting a set point for finishing feed between 85% and 99% of the threshold of pinhole formation for the material-removing depth (D) given by the sum of the selected set point for finishing depth of cut (A) and the blank roughness (B′).
Public/Granted literature
- US08919954B2 Method for obtaining an ophthalmic lens Public/Granted day:2014-12-30
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