New techniques for fusion bonding and replication for large glass reflectors

Details New techniques for fusion bonding and replication for large glass reflectors New techniques for fusion bonding and replication for large glass reflectors

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983spie..383...52a&link_type=abstract

IN: Deployable optical systems; Proceedings of the Meeting, Los Angeles, CA, January 18, 19, 1983 (A85-22576 09-12). Bellingham,

Physics

Bonding, Glass, Reflectors, Spaceborne Telescopes, Borosilicate Glass, Honeycomb Structures, Infrared Telescopes, Panels, Sands

Scientific paper

Lightweight, space-deployable glass honeycomb telescope primary mirror structures are produced by a novel method which involves the heating to softening temperature of many borosilicate or silica glass tube sections that are packed to form a honeycomb matrix and filled with a high expansion coefficient refractory sand. The close packed tubes yield a hexagonal-cell honeycomb. Attention is given to the results of an experiment in which a highly refractory master was used to shape a honeycomb of less refractory glass, employing a 1-micron thick, vacuum-deposited gold coating as a parting layer between the two.

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