Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2008-05-09
2010-02-02
Sugarman, Scott J (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
Reexamination Certificate
active
07654667
ABSTRACT:
A multi-focal spectacle lens is presented having far distance, intermediate distance, and near distance vision correction, in which the lens includes a progressive addition surface with a progression of optical power. The lens further includes a multi-order diffractive surface relief structure with an optical add power. The multi-order diffractive structure reduces chromatic aberration as compared to a conventional diffractive structure of equivalent optical power. The lens may also include a wavefront splitting device diffractive structure for generating multiple optical powers simultaneously. When the progressive addition surface and the multi-order diffractive surface relief structure are in optical communication an overall progression of optical add power may be provided by the combination of the progressive addition surface with the multi-order surface relief diffractive structure.
REFERENCES:
patent: 6270220 (2001-08-01), Keren
patent: 6619799 (2003-09-01), Blum et al.
patent: 7093938 (2006-08-01), Morris et al.
International Search Report for International Application No. PCT/US08/06024, completed Sep. 19, 2008, pp. 1-7.
Blum Ronald D.
Haddock Joshua N.
Kokonaski William
PixelOptics Inc.
Sugarman Scott J
Townsend and Townsend / and Crew LLP
LandOfFree
Progressive addition lens operating in combination with a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Progressive addition lens operating in combination with a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progressive addition lens operating in combination with a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4215492