Fabrication of lightweight ceramic mirrors by means of a chemica

Details Fabrication of lightweight ceramic mirrors by means of a chemica Fabrication of lightweight ceramic mirrors by means of a chemica

1989-10-23

1991-12-10

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Optical fiber, waveguide, or preform

264 19, 264 81, B29D 1100

Patent

active

050715968

ABSTRACT:
A process to fabricate lightweigth ceramic mirrors, and in particular, silicon/silicon carbide mirrors, involves three chemical vapor deposition steps: one to produce the mirror faceplate, the second to form the lightweight backstructure which is deposited integral to the faceplate, and the third and final step which results in the deposition of a layer of optical grade material, for example, silicon, onto the front surface of the faceplate. The mirror figure and finish are fabricated into this latter material.

REFERENCES:
patent: 4142006 (1979-02-01), Choyke et al.
patent: 4378626 (1983-04-01), Eitel
patent: 4444467 (1984-04-01), Shuskus et al.
patent: 4814232 (1989-03-01), Bluege et al.

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