Ophthalmic devices having a highly selective violet light...

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks

Reexamination Certificate

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C351S163000

Reexamination Certificate

active

11115743

ABSTRACT:
Ophthalmic devices are provided having a violet-light vertical cut-off filter abruptly absorbs light between the wave lengths of between approximately and 400 nm and 450 nm such that a curve when plotted as percent transmission versus wavelength has the shape as depicted in FIG.2. In one embodiment the ophthalmic devices are made from acrylates and the light absorbing compound is an Eastman Yellow 035 MA dye.

REFERENCES:
patent: 4528311 (1985-07-01), Beard et al.
patent: 4681412 (1987-07-01), Lemelson
patent: 4998817 (1991-03-01), Zeltzer
patent: 5172256 (1992-12-01), Sethofer et al.
patent: 5235358 (1993-08-01), Mutzhas et al.
patent: 5534041 (1996-07-01), Havens et al.
patent: 5866635 (1999-02-01), Collins et al.
patent: 6432137 (2002-08-01), Nanushyan et al.
patent: WO88/02871 (1988-04-01), None

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