Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2008-12-12
2010-06-29
Collins, Darryl J (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S177000
Reexamination Certificate
active
07744215
ABSTRACT:
Aspects of the present invention provide multiple-layer composite lenses comprising two or more materials and methods for making the same. A multi-layer composite lens of the present invention can use multiple surfaces to form optical elements that can contribute to a total desired add power. The multiple contributing elements can be aligned so as to be in optical communication to form multiple stable vision zones to enhance optical performance and vision experience of the wearer. Distributing the total desired add power across multiple appropriately aligned optical elements that are in optical communication with one another can reduce the total distortion of the lens, minimize the number of optical discontinuities introduced and reduce the visibility of any introduced optical discontinuity. A surface of the multiple-layer composite lens can comprise a combined progressive structure and substantially constant optical power structure or a cropped progressive structure.
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International Search Report of Application No. PCT/US08/86459 Mailed on Mar. 18, 2009.
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Blum Ronald D.
Haddock Joshua N.
Iyer Venkatramani S.
Kokonaski William
Collins Darryl J
PixelOptics Inc.
Townsend and Townsend / and Crew LLP
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