Dynamic mirror alignment control

Details Dynamic mirror alignment control Dynamic mirror alignment control

1986-12-12

1987-12-08

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

318640, 356349, 356351, G01J 345

Patent

active

047115734

ABSTRACT:
An improved mirror alignment control for dynamically aligning the reflecting mirrors bounding the optical path in an interferometer comprises a closed loop servo control which utilizes a two frequency laser beam to provide phase comparison between beams traversing differing portions of the optical paths in the interferometer to determine alignment of the mirrors, said phase comparison providing a correction signal to direct multi-axial alignment of at least one of the mirrors.

REFERENCES:
patent: 4053231 (1977-10-01), Fletcher et al.
patent: 4444501 (1984-04-01), Schwiesow

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