Composite mirror and method of construction
US4451119A · kind A · utility
41Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1981 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Apr 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0858
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.