Apparatus for interference fringe shift sensing

Details Apparatus for interference fringe shift sensing Apparatus for interference fringe shift sensing

1981-04-22

1986-01-28

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

045667942

ABSTRACT:
An apparatus for determining fringe pattern movement particularly in the art of interferrometric devices. The apparatus of the present invention obtains precise movement of pattern movement without the use of any bias elements for maintaining sensitivity above zero.

REFERENCES:
patent: 4219276 (1980-08-01), Dorsman
patent: 4280766 (1981-07-01), Goss et al.
patent: 4329056 (1982-05-01), Lacombat et al.
patent: 4342517 (1982-08-01), Johnson et al.

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