Hydraulic actuators for optical systems

Details Hydraulic actuators for optical systems Hydraulic actuators for optical systems

1990-08-22

1991-12-24

Arnold, Bruce Y.

Optical: systems and elements

Mirror

Including specified control or retention of the shape of a...

60545, 60583, 359846, G02B 718

Patent

active

050746545

ABSTRACT:
Hydraulic actuators are disclosed which are useful for controlling the reflecting surface of deformable mirrors or positioning the segments a segmented reflecting mirror. In one embodiment electrodistortive actuators are used to control movement of a piston into or out of a reservoir containing a fluid. The fluid controls movement of a second, smaller piston whose movement may be coupled to a surface whose shape or position it is desired to influence. In a second preferred embodiment two sets of actuators are used to permit the disclosed mechanism to impart movement in two directions to the reflecting surface or optical element whose shape or position it is desired to control.

REFERENCES:
patent: 3071930 (1963-01-01), Moulin
patent: 4492431 (1985-01-01), Eitel et al.
patent: 4655563 (1987-04-01), Plante et al.
patent: 4674848 (1987-06-01), Aldrech et al.
patent: 4775230 (1988-10-01), Meier
patent: 4861149 (1989-08-01), Ealey

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