High accuracy laser accelerometer

Details High accuracy laser accelerometer High accuracy laser accelerometer

1993-12-21

1995-10-10

Epps, Georgia Y.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

73510, 73511, 7351419, 356349, 356350, 356352, 372 92, G01P 1508, G01B 902

Patent

active

054561124

ABSTRACT:
A high accuracy laser accelerometer has a differential pathlength element having an outer annulus and a combined acceleration sensing proof mass with a laser mirror, a closed cavity including a cathode, anode and a movable pathlength control mirror, a lens prismatic readout, a photodetector and associated electronics. When the laser accelerometer is subjected to linear acceleration, the acceleration sensing proof mass moves relative to the outer annulus of the differential pathlength element causing a differential pathlength change in the cavity which is readily detected by the photodetector.

REFERENCES:
patent: 4233847 (1980-11-01), Walker
patent: 4422331 (1983-12-01), Walker
patent: 4428234 (1984-01-01), Walker
patent: 4429573 (1984-02-01), Walker
patent: 4841774 (1989-06-01), Hall
patent: 4918987 (1990-04-01), Vescial et al.

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