1986-02-26
1987-07-07
Henry, Jon W.
G02B 510, G02B 718
Patent
active
046782931
ABSTRACT:
The invention relates to a mirror having a non-plane reflecting face (M.sub.2), said mirror being constituted by a mass of optical material (M) having cells (A) formed therein in such a manner that the centers of gravity (g) of the portions of mirror material surrounding each cell lie in the same plane as the center of gravity (G) of the mirror as a whole. The invention is particularly applicable to large diameter mirrors used in telescopes and whose optical axes are generaly used in a horizontal position (or close thereto). The aim of the invention is to reduce the distortion phenomena which may occur due to the mirror bending under its own weight.
REFERENCES:
patent: 3753322 (1973-08-01), Bordes
Soviet Inventions Illustrated Week K 04, V. D. Derevenskii.
Soviet Inventions Illustrated Week K 30, I. K. Meshkovskii.
Greer, Jr. Thomas J.
Henry Jon W.
Recherches et Etudes d'Optique et de Sciences Connexes
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