Preparation of graded composition protective coatings

Details Preparation of graded composition protective coatings Preparation of graded composition protective coatings

1974-10-16

1977-02-22

Hoffman, James R.

Coating processes

Optical element produced

427255, B05D 134, G02B 110

Patent

active

040093000

ABSTRACT:
Graded composition protective layers are prepared for water soluble optical elements. The two materials forming the graded composition protective layer are vapor deposited in the presence of a third vapor which does not react or co-deposit with the two materials. The third vapor inhibits decomposition of one of the two materials by reducing the vapor temperature of the other material.

REFERENCES:
patent: 2512257 (1950-06-01), Pfand
patent: 2561077 (1951-07-01), Tilton
patent: 2668478 (1954-02-01), Schroder
patent: 2700002 (1955-01-01), Strong
patent: 3271179 (1966-09-01), Smith
Strong, John, Concepts of Classical Optics, W. H. Freeman, 1958, pp. 251-252.
F. Horrigan, et al., "Windows for High Power Lasers" Microwave pp. 68-75, 1969.
Sparks, "Optical Distortion by Heated Windows in High Power Laser Systems," J. Appl. Phys., vol. 42, pp. 5029-5046 (1971).
Kennedy, "Gas Scattering and Ion Plating Deposition Methods" Research/Development, Nov. 1971, pp. 40-44.

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