Photochromic optical article and method of producing the same

Details Photochromic optical article and method of producing the same Photochromic optical article and method of producing the same

2011-05-31

2011-05-31

Ruthkosky, Mark (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C428S220000, C428S411100, C427S164000

Reexamination Certificate

active

07951445

ABSTRACT:
A photochromic optical article comprising an optical substrate having a photochromic layer which is formed on at least one surface thereof and contains a photochromic compound is dispersed in a resin, and a thin metal oxide layer formed on the photochromic layer, wherein an indenonaphthopyran compound is used as the photochromic compound, the photochromic layer having a thickness of 30 to 50 μm, and the thin metal oxide layer has a thickness of 0.01 to 10 μm. The photochromic optical article has excellent photochromic properties, effectively suppresses a decrease in the photochromic properties caused by deterioration due to oxidation and features very excellent photochromic light resistance.

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