Application Of Replicated Glass Mirrors To Large Segmented Optical Systems

Michael H. Krim

doi:10.1117/12.950383

21 February 1986 Application Of Replicated Glass Mirrors To Large Segmented Optical Systems

Michael H. Krim

Proceedings Volume 0571, Large Optics Technology; (1986) https://doi.org/10.1117/12.950383
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

Initiation of the NASA Space Station project presents many challenging opportunities. One such challenge is the need to develop large, high specular reflectance, lightweight mirrors that can withstand thousands of deep heating and cooling cycles without degradation for virtually unlimited orbital operation. Further these mirrors, which are candidates for the solar concentrators employed as part of the electrical power generation system, would need to be produced at a rate equivalent to one 60-inch mirror per day as dictated by project schedules and anticipated power demands. This paper develops the requirements for, and an approach to, the design of these mirrors. Following the Introduction is a discussion of the concentrator design and performance requirements. Next a review of the principal degradation sources and their effect on various materials and material combinations is presented. The effect on cumulative mission, or life cycle, costs of different material choices is then presented and shows the potential advantage of glass. Finally concentrator segment design and producibility concepts are presented and applications to other projects such as long wavelength infrared imaging systems are suggested.

Citation Download Citation

Michael H. Krim "Application Of Replicated Glass Mirrors To Large Segmented Optical Systems", Proc. SPIE 0571, Large Optics Technology, (21 February 1986); https://doi.org/10.1117/12.950383

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