Pathlength controller for a ring laser gyroscope

Details Pathlength controller for a ring laser gyroscope Pathlength controller for a ring laser gyroscope

1978-11-17

1981-05-12

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, 356350, H01L 4108

Patent

active

042674786

ABSTRACT:
A method and apparatus for pre-setting the position of a piezoelectric actuator used in controlling the path length of the laser beam of a ring laser gyroscope is disclosed. The path length controller of this invention minimizes the necessary rectilinear motion of the actuator by presetting the actuator position according to the environmental or start-up temperature of the ring laser gyroscope to anticipate changes in the laser path length resulting from changes in the environmental temperature and/or self heating effect when the gyroscope is in operation.

REFERENCES:
patent: 3373650 (1968-03-01), Kelpatrick
patent: 3467472 (1969-09-01), Kelpatrick
patent: 3555453 (1968-05-01), Littaure
patent: 3719838 (1973-03-01), Peduto et al.
patent: 3902084 (1975-08-01), May, Jr.
patent: 4099876 (1978-07-01), Dorsman
patent: 4113387 (1978-09-01), Shutt
patent: 4160184 (1979-07-01), Ljung

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