Laser light length control assembly for ring laser gyro

Details Laser light length control assembly for ring laser gyro Laser light length control assembly for ring laser gyro

1983-07-21

1994-05-10

Moskowitz, Nelson

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, 372107, 359198, 359212, H01L 4110, G01B 902, G01C 1964

Patent

active

053112806

ABSTRACT:
A piezoelectric actuator for use in controlling the path length, for example, in a ring laser gyro is made of two piezoelectric discs attached to a metallic structure for exerting a push-pull force thereon to move the metallic structure in an oil can fashion. The piezoelectric actuator is attached to a dual diaphragm mirror assembly in such a way as to impart a strictly linear motion to the mirror assembly without any deliterious rotational effects. The actuator can easily be optimized for varying diaphragm stiffness by adjusting the thickness of the metallic structure to which the piezoelectric discs are attached. The mirror assembly and actuator are designed to minimize the influence of temperature changes on the position of the path length mirror.

REFERENCES:
patent: 3581227 (1971-05-01), Podgorski
patent: 4035081 (1977-07-01), Sepp et al.
patent: 4113387 (1978-09-01), Shutt
patent: 4160184 (1979-07-01), Lyung
patent: 4203654 (1980-05-01), Ellis
patent: 4269486 (1981-05-01), Shintani
patent: 4348113 (1982-09-01), Banfils
patent: 4383763 (1983-05-01), Hutchings et al.
patent: 4488789 (1984-12-01), Kenney

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