Photochromic articles

Details Photochromic articles Photochromic articles

1987-05-01

1990-04-03

Lee, Mary C.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

252586, 544 59, 544 60, 544 70, 544 71, G02B 2700, G02B 523

Patent

active

049135449

ABSTRACT:
A plastic organic photochromic article, typically a lens such as an ophthalmic lens or a window such as a vehicle roof light, comprisig a plastics host material having a photochromic compound incorporated therein or applied thereto, the article exhibiting the following properties, measured at Air Mass 2 at 25.degree. C.:

REFERENCES:
patent: 3231584 (1966-01-01), Berman
patent: 3485765 (1969-12-01), Newland
patent: 3501410 (1970-03-01), Newland
patent: 3508810 (1967-07-01), Baltzer
patent: 3532638 (1970-10-01), Otis
patent: 3578602 (1971-05-01), Ono et al.
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4287337 (1981-09-01), Gugliemetti
patent: 4720356 (1988-01-01), Chu
Techniques of Chemistry, vol. III, Photochromism, Brown, Editor, Wiley Interscience, pp. 48-55, 98-105.
CA 106(20): 157970w, abstract of 238611, E. Germany, Aug. 27, 1986.
Chemical Abstracts Service, Chemical Abstracts, vol. 106, 1987, p. 84, 106: 157970.

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