Scratch resistant optical interference film

Details Scratch resistant optical interference film Scratch resistant optical interference film

1988-10-25

1991-03-19

Arnold, Bruce Y.

350164, 350166, G02B 528, G02B 110

Patent

active

050005286

ABSTRACT:
A plurality of refractive layers of an optical interference film includes at least an inner metal layer having a prescribed refractive index and an outer-most layer of a metallic nitride compound having a refractive index higher than the inner metal layer for protecting the inner metal layer from oxidation, reduction, crystallization, etc.

REFERENCES:
patent: 3885855 (1975-05-01), Gross
patent: 3895155 (1975-07-01), Shukuri et al.
patent: 4609267 (1986-09-01), Deguchi et al.
patent: 4649088 (1987-03-01), Mitsui et al.
H. A. MacLeod: "Thin-Film Optical Filters", part 12, Applications of Filters and Coatings, 2nd Edition, 1986, pp. 499-501, Adam Hilger, Bristol, GB, pp. 499-501: Heat Reflecting Metal-Dielectric Coatings.

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