Process for determining a pair of progressive ophthalmic lenses

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United States of America Patent

PATENT NO 9411170
SERIAL NO

14399874

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Abstract

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The visual perception of a lens wearer is not only along the gaze direction, but also has a non-zero transverse extension, which is called perceptual span. Perceptual span is skewed to extend further in the reading direction, i.e., the line portion to be read next relative to the line portion that was just read. A technique is provided that determines a pair of progressive ophthalmic lenses that take such perceptual span into account.

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Patent Owner(s)

Patent OwnerAddress
ESSILOR INTERNATIONAL147 RUE DE PARIS CHARENTON-LE-PONT 94220

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Contet, Aude Charenton le Pont, FR 15 76
Drobe, Björn Charenton le Pont, FR 28 116
Ng, Hwei Kien Paulyn Charenton le Pont, FR 1 3

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