Protective coatings for optical components

Details Protective coatings for optical components Protective coatings for optical components

1995-07-17

1998-05-19

Speer, Timothy

Stock material or miscellaneous articles

Composite

Of inorganic material

428408, 428432, 428689, 428704, B32B 900

Patent

active

057533792

ABSTRACT:
An optical component having a protective layer provided on a surface thereof, the protective layer preventing the component from being damaged by high velocity impacts from small particles or water droplets. The protective coating comprises a layer of gallium phosphide deposited onto the component surface using plasma assisted chemical vapour deposition (PACVD), an intermediate layer of PACVD boron phosphide, and an outer layer of PACVD diamond-like-carbon.

REFERENCES:
patent: 5169452 (1992-12-01), Nakayama et al.
patent: 5273587 (1993-12-01), Guha et al.
Optical Engineering, vol. 33, No. 3, Mar. 1, 1994, pp. 957-966, Gibson et al., "Ultradurable phosphide-based antireflection coatings for sand and rain erosion protection".
Journal of Vacuum Science and Technology, Part B, vol. 10, No. 3, May 1, 1992, pp. 1070-1073, "Remote Plasma Enhanced Chemical Vapor Deposition Of Gap With in Situ Generation Of Phosphine Precursors".
Hard Materials In Optics, The Hague, NL, Mar. 14-15, 1990, vol. 1275, Mar. 14, 1990, Carl G. Ribbing, pp. 46-51, Lewis et al, "Phosphide Based Materials As Hard Optical Coatings -- A Review".

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