Dither compensator for ring laser gyroscope

Details Dither compensator for ring laser gyroscope Dither compensator for ring laser gyroscope

1983-06-08

1985-08-20

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

045360871

ABSTRACT:
Dither compensation in a ring laser gyroscope is effectuated by one or more retroreflective prisms or by one or more pairs of cofunctioning transparent wedges mounted to the gyroscope casing in a dither compensation plane parallel to the plane of the laser light path in the gyroscope cavity. Prisms or beam splitters reflect at least one of two counter-rotating laser beams to the dither compensation plane from the plane of the cavity. An optical sensor comprising a photodiode for detecting and analyzing the interfering laser beams can be placed in the dither compensation plane or in the plane of the gyroscope cavity.

REFERENCES:
patent: 3373650 (1965-04-01), Killpatrick
patent: 4167336 (1979-09-01), Ljung
patent: 4190364 (1980-02-01), Ljung et al.
patent: 4425040 (1984-01-01), Ljung et al.
patent: 4444502 (1984-04-01), Ljung

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