Progressive addition lenses

G - Physics – 02 – C

Patent

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Details

G02C 7/06 (2006.01) B29D 11/00 (2006.01)

Patent

CA 2287058

The invention provides progressive addition lenses in which lens unwanted astigmatism is reduced and channel width through the intermediate and near vision zones is increased as compared to conventional progressive addition lenses. This result is achieved by combining two or more progressive addition surfaces, which surfaces in combination provide the dioptric add power of the lens.

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