Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2007-11-27
2007-11-27
Sugarman, Scott J. (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S159000
Reexamination Certificate
active
10542701
ABSTRACT:
A double progressive spectacle lens in which a first prescribed progressive surface can be freely designed. The second progressive surface is then optimized in relation to the first prescribed surface. Thereby, the resulting spectacle lens avoids the need to employ a classic hourglass design progression zone and produces optical and geometric advantages such as an overall height of the progressive lens.
REFERENCES:
patent: 2002/0196410 (2002-12-01), Menezes
Altheimer Helmut
Esser Gregor
Haimerl Walter
Wehner Edda
Welk Andrea
Collins Darryl J.
Crowell & Moring LLP
Rodenstock GmbH
Sugarman Scott J.
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