Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2005-02-08
2005-02-08
Epps, Georgia (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S177000
Reexamination Certificate
active
06851806
ABSTRACT:
To offer a novel combining formula for combining a progressive refractive surface and a toric surface, thereby to provide a novel progressive multifocal lens which has an eyesight correcting capability and an astigmia remedying capability on an identical refractive surface. Using a combining formula indicated by a combining formula (1) or (2), a refractive surface2on an eyeball side or a refractive surface3on an object side is made a combined refractive surface14+15in which an original progressive refractive surface14set only for the purpose of demonstrating a desired eyesight-correcting characteristic, and an original toric surface15set only for the purpose of demonstrating a desired astigmia-remedying characteristic are combined.
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Collins Darryl J.
Epps Georgia
Seiko Epson Corporation
Sughrue & Mion, PLLC
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