Layered product and method of producing the same

Details Layered product and method of producing the same Layered product and method of producing the same

2005-02-02

2008-10-28

Collins, Darryl J (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C359S241000, C428S411100

Reexamination Certificate

active

07441893

ABSTRACT:
A layered product comprising an optical substrate having, on at least one surface thereof, a photochromic surface layer constituted by a resin in which a photochromic compound is dispersed, and an ultraviolet ray-absorbing film of a thickness of 0.1 to 100 μm formed on the photochromic surface layer of the optical substrate, the ultraviolet ray-absorbing film having a transmission factor of not smaller than 50% for a ray of light of 360 nm and a transmission factor of not larger than 10% for a ray of light of 320 nm. The layered product features a very high photochromic light resistance without causing a drop in the color density while effectively preventing the oxidation and deterioration of the photochromic compound.

REFERENCES:
patent: 4913544 (1990-04-01), Rickwood
patent: 5694240 (1997-12-01), Sternbergh
patent: 5739243 (1998-04-01), Herold et al.
patent: 6113813 (2000-09-01), Goudjil
patent: 6340765 (2002-01-01), Momoda et al.
patent: 6525194 (2003-02-01), Momoda et al.
patent: 6547390 (2003-04-01), Bernheim et al.
patent: 7189456 (2007-03-01), King
patent: 62-288830 (1987-12-01), None
patent: 11-35326 (1989-05-01), None
patent: 2-28154 (1990-01-01), None
patent: 10-265241 (1990-03-01), None
patent: 8-48940 (1996-02-01), None
patent: 08-076150 (1996-03-01), None
patent: 9-241263 (1997-09-01), None
patent: 10-316453 (1998-12-01), None
patent: 11-133204 (1999-05-01), None
patent: 2002-523267 (2002-07-01), None
patent: WO 94/22850 (1994-10-01), None
patent: WO 96/14596 (1996-05-01), None
patent: WO 01/05854 (2001-01-01), None
patent: WO 01/60811 (2001-08-01), None
patent: WO 03/011967 (2003-02-01), None

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