Progressive multifocal ophthalmic lens

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8876288
SERIAL NO

13578050

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The invention relates to a finished or semi-finished lens which comprises: a disc containing all the points of the lens that have the same abscissa and the same ordinate as points located within a circle in the reference plane having a diameter of 30 millimeters and centered on the prism reference point; a progression length of less than 14.5 millimeters; a first specific point having a cylinder value equal to the maximum cylinder value of all the points of the lens located in the nasal area and in the disc; and a second specific point having a cylinder value equal to the maximum cylinder value of all the points of the lens located in the temporal area and in the disc; a first ratio between: the maximum gradient of the cylinder for the points of the lens that have the same abscissa and the same ordinate as the points located on segments connecting the mounting cross to the first and second specific points, and surface addition of less than 0.095 per millimeter; and a second ratio between: the maximum cylinder value of the first and second specific points, and surface addition of no more than 0.85. The invention enhances the comfort of the wearer.

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First Claim

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Patent Owner(s)

  • ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berthezene, Marie-Anne Charenton-le-Pont, FR 11 72
Bourdoncle, Bernard Charenton-le-Pont, FR 16 199
Calixte, Laurent Charenton-le-Pont, FR 26 95
Guilloux, Cyril Charenton-le-Pont, FR 51 308
Mousset, Soazic Charenton-le-Pont, FR 10 77
Paille, Damien Charenton-le-Pont, FR 17 42

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