Optical: systems and elements – Mirror – Including specified control or retention of the shape of a...
Patent
1990-12-20
1991-12-31
Arnold, Bruce Y.
Optical: systems and elements
Mirror
Including specified control or retention of the shape of a...
359846, 359883, G02B 718
Patent
active
050767003
ABSTRACT:
A lightweight mirror is disclosed in which the core and backsheet of the mirror are constructed from a single piece of glass. The core is lightweighted by drilling or otherwise forming a series of pockets in the core with the machining process proceeding from the front of the core toward the backsheet. A plurality of walls left between each of the adjacent machined-out areas to provide the core with rigidity and to aid in supporting a facesheet on which a reflecting surface is formed. The facesheet is fastened to the rim of the core and to the walls which remain between the adjacent pockets in the core using a frit bonding process.
REFERENCES:
patent: 3507737 (1970-04-01), Busdiecker
patent: 3613222 (1971-10-01), Richey
patent: 3644022 (1972-02-01), Jagdt et al.
patent: 3754812 (1973-08-01), Mohn
patent: 3912380 (1975-10-01), Klein
Angel and Woolf, "Steps Toward 8-Meter Honeycomb Mirror Blanks: I. Rational and Approach", Annals of the New York Academy of Sciences, 1983, pp. 163-170.
Lewis et al., "Mirror Blank Manufacturing for the Emerging Market", 1982, SPIE, vol. 332, pp. 307-309.
Maran, "A New Generation of Giant Eyes Gets Ready to Prove the Universe", Smithonian Magazine (date unknown) pp. 41-53.
Arnold Bruce Y.
Litton Systems Inc.
Rotella Robert F.
Ryan J. P.
Wallach Michael H.
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