Laser gyro with dithered mirrors and current dither

Details Laser gyro with dithered mirrors and current dither Laser gyro with dithered mirrors and current dither

1983-01-31

1987-03-31

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

046539190

ABSTRACT:
A laser gyro for detecting rates of rotating the gyro having a primary dither means for eliminating lock-in at low rates of rotation and a secondary dither means for eliminating nonlinearities in the gyro output when the input rate is a harmonic of the primary dither frequency. The gyro includes a body having a polygonal shaped cavity therein with a mirror disposed at each of the corners thereof to form a closed loop path for two counter-rotating beams. The primary dither includes means for dithering two mirrors 180.degree. out of phase to maintain the cavity path length constant. The secondary dither includes a current dither for differentially modulating the current in each leg of the gyro to randomly null nonlinearities in the gyro output.

REFERENCES:
patent: 3467472 (1969-09-01), Killpatrick
patent: 3612690 (1971-10-01), Staats
patent: 3752586 (1973-08-01), Hutchings et al.
patent: 4152071 (1979-05-01), Podgorski
patent: 4281930 (1981-08-01), Hutchings
patent: 4410274 (1983-10-01), Ljung

Affiliated with

Also associated with

Rating

Laser gyro with dithered mirrors and current dither does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser gyro with dithered mirrors and current dither, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser gyro with dithered mirrors and current dither will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2209998