Interferometer optical system

Details Interferometer optical system Interferometer optical system

1975-04-02

1977-11-01

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356110, G01B 902

Patent

active

040563235

ABSTRACT:
An interferometer optical system for general use to measure optical parallelism or relative rotational or joint translational positions of the two spaced subject mirrors uses coherent light split into two beams which are directed, one normal to one of the two mirrors and the other normal to the other of the two mirrors. The reflections of these two beams are then superimposed on a target which reveals a light interference pattern indicative of the parallelism or relative rotation or joint translation of the two mirrors. In preferred embodiments, in order to compensate for the mutual tilt of the subject mirrors with respect to the plane of the beams incident thereon, the path of one of the beams to and from the subject mirror includes a corner mirror, or retrodirective mirror, and the path of the other beam includes at least one adjustable mirror.

REFERENCES:
patent: 3597091 (1971-08-01), Bowker
Candler, Modern Interferometers, pp. 207-210, Hilger & Watts, Ltd., 1951.

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