Optical alignment system

Details Optical alignment system Optical alignment system

1988-04-13

1989-09-19

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

21912176, 455606, 455607, 455617, G01B 1126, B23K 900, H04B 900

Patent

active

048675601

ABSTRACT:
In systems such as satellite communication systems and laser machining systems in which accurate focusing of a communications beam or a machining laser beam is critical, a dual-beam optical alignment system provides automatic compensation for variations in system operation, such as temperature variations and aging, which can cause misalignment. Separate control circuits receive outputs of a beam position sensor which in turn receives divided outputs of each of the dual beams. The divided outputs are provided by a quartered light-sensitive surface which is divided into equal portions along rectilinear coordinates. Alignment is provided in accordance with differences in magnitudes of beams output by each of the respective quarters from a reference value.

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