Flexible plastic substrate with anti-reflection coating having l

Details Flexible plastic substrate with anti-reflection coating having l Flexible plastic substrate with anti-reflection coating having l

1995-05-09

1999-08-17

Speer, Timothy M.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428347, 428352, 428356, 428480, 428696, 428699, 428701, 428702, 359359, 359361, 359586, 359589, B32B 1700

Patent

active

059391898

ABSTRACT:
An optical article comprising a flexible plastic substrate having an index of refraction ranging from 1.55 to 1.71 and having first and second surfaces and an anti-reflection coating carried by the first surface. The anti-reflection coating consists of a high index material and a low index material in which the high index material has an index of refraction of 2.0 and greater to provide the index of refraction difference between the substrate and the high index material of 0.29 to 0.75. The low index material is formed of a material having an index of refraction of 1.38 or less to provide an index of refraction difference between the high index material to the low index material ranging from approximately 0.59 to 0.92.

REFERENCES:
patent: 3356522 (1967-12-01), Libbert
patent: 4333983 (1982-06-01), Allen
patent: 4702963 (1987-10-01), Phillips
patent: 5168003 (1992-12-01), Proscia
patent: 5248545 (1993-09-01), Proscia

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