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Proceedings Paper

Thermal Stability Of Beryllium Mirrors
Author(s): Iwao P. Adachi; Don Williams
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Paper Abstract

Beryllium mirrors have shown excellent stability over a wide range of thermal conditions. Experiments were conducted using flat mirrors which remained flat from room temperature down to 89 degrees K. LUPI interferometer measurements confirmed calculated data. The surface was monitored during the thermal cycle from room temperature to 89°K. The results have good agreement with calculation. For a spherical mirror, the radius of curvature changes as predicted. For an elliptical mirror, the radius of curvature at the vertex changed but eccentricity remained the same.

Paper Details

Date Published: 1 January 1987
PDF: 5 pages
Proc. SPIE 0818, Current Developments in Optical Engineering II, (1 January 1987); doi: 10.1117/12.967450
Show Author Affiliations
Iwao P. Adachi, Rockwell International Corporation (United States)
Don Williams, Rockwell International Corporation (United States)

Published in SPIE Proceedings Vol. 0818:
Current Developments in Optical Engineering II
Robert E. Fischer; Warren J. Smith, Editor(s)

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