Alignment sensing and correcting assembly for an optical element

Details Alignment sensing and correcting assembly for an optical element Alignment sensing and correcting assembly for an optical element

1989-09-29

1990-09-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

350611, G01J 120

Patent

active

049595318

ABSTRACT:
An assembly suitable for restoring and retaining a desired curvature profile for an optical system. The optical system may comprise a base structure, and a plurality of displacement actuators for positioning at least one of a plurality of optical elements, for example, mirrors, to the base structure, so that the optical elements have a desired curvature profile. Arbitrary and deleterious inputs to the optical system, which may tend to misalign the optical elements, thereby vitiating the desired curvature profile, are sensed by the assembly. The assembly computes new displacement actuator commands, for restoring the desired curvature profile.

REFERENCES:
patent: 3967899 (1976-07-01), O'Meara
patent: 4618223 (1986-10-01), Fried
patent: 4875765 (1989-10-01), Vandenberg et al.

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