Manufacture and finishing of lightweight silicon carbide mirrors

Jonathan W. Bender; Donald G. Ewing

doi:10.1117/12.165234

6 December 1993 Manufacture and finishing of lightweight silicon carbide mirrors

Jonathan W. Bender, Donald G. Ewing

Proceedings Volume 2018, Passive Materials for Optical Elements II; (1993) https://doi.org/10.1117/12.165234
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The requirement for lightweight mirrors for spaceborne application has often been met through the use of beryllium or low-expansion glass-like materials. The current availability of silicon carbide substrates and the development of suitable manufacturing and finishing process, however, provide an alternative material for such uses. This paper describes the manufacture of a series of lightweight silicon carbide scan mirrors intended for satellite installation. The finishing procedures employed and the test results obtained while establishing surface accuracies on the order of one millionth of an inch are presented and discussed.

Citation Download Citation

Jonathan W. Bender and Donald G. Ewing "Manufacture and finishing of lightweight silicon carbide mirrors", Proc. SPIE 2018, Passive Materials for Optical Elements II, (6 December 1993); https://doi.org/10.1117/12.165234

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