Optical: systems and elements – Mirror – With support
Patent
1996-05-16
1998-03-31
Nguyen, Thong
Optical: systems and elements
Mirror
With support
359364, 359399, 359430, G02B 7182, G02B 2300
Patent
active
057345163
ABSTRACT:
A device for accurately positioning the vertex of a secondary mirror (5) off-centered with respect to that of a primary mirror (3) of a telescope (1). The secondary mirror (5) is connected to a support (8). The connection (9) includes two radial and crossed elongate connecting members (10) which extend on either side of the support (8) (along a first direction X--X and a second direction Y--Y) passing through the center (0) of the support, corresponding to the vertex (5A) of the secondary mirror (5). Each of the connecting members (10) is longitudinally rigid and transversely flexible. Each of the connecting members is capable of being controlled, in order to move along its longitudinal extent by an actuation device (11).
REFERENCES:
patent: 4123136 (1978-10-01), Dahab et al.
patent: 4134638 (1979-01-01), Drauglis
patent: 4629297 (1986-12-01), Horine
patent: 4883348 (1989-11-01), Spivey et al.
patent: 5162951 (1992-11-01), Sorce
patent: 5414564 (1995-05-01), Pausch et al.
"Design of a Servo-Mechanism to Control . . . "; A. Labeque et al.; Nov. 1975; pp. 419-437.
"Nutating Subreflector for a Millimeter . . . "; Radford; Mar., 1990; pp. 953-959.
Nguyen Thong
Societe Nationale Industrielle et Aerospatiale
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