Development Of Lightweight, Glass Mirror Segments For The Large Deployable Reflector

R. K. Melugin; J. H. Miller; J. R. P. Angel; P. A. A. Wangsness; R. E. Parks; D. A. Ketelsen

doi:10.1117/12.950390

21 February 1986 Development Of Lightweight, Glass Mirror Segments For The Large Deployable Reflector

R. K. Melugin, J. H. Miller, J. R. P. Angel, P. A. A. Wangsness, R. E. Parks, D. A. Ketelsen

Proceedings Volume 0571, Large Optics Technology; (1986) https://doi.org/10.1117/12.950390
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

Accomplishments in the development of lightweight, honeycomb-core, sandwich mirror blanks made of borosilicate and high-silica glasses at the University of Arizona for the Large Deployable Reflector program are described. In this paper, work spanning the last 2 years is reported, highlighting a new mirror blank fabrication technique that permits the fabrication of the honeycomb core integrally with the front and back plates of the blank in a single furnace cycle. Two types of mirror blanks made by this method, an off-axis, aspheric segment and a smaller Vycor circular piece, are described. The fabrication of two off-axis, aspheric mirror segments is also described. Cryogenic test results are included on the test of a 38-cm diameter, lightweight, honey-comb core, sandwich mirror made of Pyrex.

Citation Download Citation

R. K. Melugin, J. H. Miller, J. R. P. Angel, P. A. A. Wangsness, R. E. Parks, and D. A. Ketelsen "Development Of Lightweight, Glass Mirror Segments For The Large Deployable Reflector", Proc. SPIE 0571, Large Optics Technology, (21 February 1986); https://doi.org/10.1117/12.950390

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