Apparatus for controlling the position and direction of a laser

Details Apparatus for controlling the position and direction of a laser Apparatus for controlling the position and direction of a laser

1995-02-21

1999-07-13

Hantis, K. P.

Optics: measuring and testing

Angle measuring or angular axial alignment

Alignment of axes nominally coaxial

372107, G01B 1126

Patent

active

059234180

ABSTRACT:
An apparatus for maintaining an electromagnetic beam, namely a laser beam, aimed at a particular point in space and aligned with a unique propagation path. The apparatus includes one or more adjustable beam steerers located in the propagation path, and first and second spaced apart beam position detectors arranged in the beam path. The beam steerer(s) are preferably adjustable along at least two orthogonal axes of rotation for controlling the propagation direction of the beam. Error signals from the position sensors are fed into a beam steerer controller connected to the beam steerer(s) for electro-mechanically adjusting the beam steerer. The method of the invention involves fixing the propagation path on an angularly adjustable beam steering surface so that the propagation path at a different unique point in space, such as a target, can be controlled by adjusting the angular orientation of that beam steerer.

REFERENCES:
patent: 3723013 (1973-03-01), Stirland et al.
patent: 4319839 (1982-03-01), Durran
patent: 4801791 (1989-01-01), Cain
patent: 4939739 (1990-07-01), Hobart et al.
patent: 5103082 (1992-04-01), Fonneland et al.
patent: 5121405 (1992-06-01), Negus
patent: 5536916 (1996-07-01), Kohari et al.

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