Method for cutting-out a multi-layer ophthalmic lens

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United States of America Patent

PATENT NO 9475166
SERIAL NO

14399715

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Abstract

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A method for cutting-out a multi-layer ophthalmic lens (100) following a desired contour (C3), includes: a step of pre-blanking the ophthalmic lens (100) using a preliminary tool (210; 223), according to a preliminary contour (C1, C1′); a step of blanking the ophthalmic lens (100) using a blanking wheel (210), following a blanking contour (C2, C3); and a step of finishing the ophthalmic lens (100) using a finishing tool (212). According to the invention, the preliminary contour (C1, C1′) is larger than the desired contour (C3), and the blanking wheel (210) used has a granulometry of between 0.1 and 0.5 mm and is controlled in relation to the ophthalmic lens (100) so as to apply a radial force of between 0.1 and 5 N to the ophthalmic lens (100) during the blanking step.

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Patent Owner(s)

  • ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burgos, Montserrat Charenton-le-Pont, FR 8 7
Godeau, Muriel Charenton le Pont, FR 4 24
Lapprand, Aude Charenton le Pont, FR 10 31
Lemaire, Cedric Charenton-le-Pont, FR 15 45
Massart, Christian Charenton-le-Pont, FR 4 17
Massey, Gilles Charenton-le-Pont, FR 4 29
Pinault, Sebastien Charenton-le-Pont, FR 5 4
Roussel, Catherine Charenton-le-Pont, FR 1 1

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