Protective coatings for optical components
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United States of America Patent
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May 19, 1998
Grant Date -
N/A
app pub date -
Jul 17, 1995
filing date -
Jul 23, 1994
priority date (Note) -
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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.
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