Readout apparatus for a laser angular rate sensor

Details Readout apparatus for a laser angular rate sensor Readout apparatus for a laser angular rate sensor

1987-08-12

1989-10-03

Willis, Davis L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

048712531

ABSTRACT:
Two electrically isolated photodetectors are responsive to an interference pattern output of a ring laser angular rate sensor. The two photodetectors are constructed to have a periodic pattern of photosensitive zones. The photodetectors are positioned such that the periodic pattern is selectively oriented relative to the interference pattern fringes so as to produce a pair of output signals out of phase with each other in the presence of rotation.

REFERENCES:
patent: 4152072 (1979-05-01), Hutchings
patent: 4204230 (1980-05-01), Sprague
patent: 4536087 (1985-08-01), Shernoff
patent: 4676643 (1987-06-01), Vescial

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