Composite mirror and method of construction

Details Composite mirror and method of construction Composite mirror and method of construction

1981-04-02

1984-05-29

Evans, F. L.

G02B 508

Patent

active

044511191

ABSTRACT:
A preferred embodiment of a composite mirror comprises (1) a substrate of carbon-carbon, (2) intermediate layers of silicon carbide, silicon dioxide, (3) optically polished layers of metals and/or suitable glass (ultralow-expansion or modified fused-silica glass) and (4) an optical coating of high reflectivity. The resulting mirror exhibits desired features including high optical quality and a low coefficient of thermal expansion; such mirrors being well suited to high thermal flux applications. Methods of producing the composite mirror are described.

REFERENCES:
patent: 3925587 (1975-12-01), Park
patent: 4035065 (1977-07-01), Fletcher
patent: 4256378 (1981-03-01), Prewo et al.
patent: 4268124 (1981-05-01), Lui
patent: 4271570 (1981-06-01), Curzio

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