Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1974-12-11
1977-02-08
McGraw, Vincent P.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
G01B 902
Patent
active
040069893
ABSTRACT:
A laser gyroscope system which detects frequency shifts in which waves are propagated along a path in opposite directions at different frequencies to minimize interaction between the waves with frequency separation of the waves maintained by both reciprocal and nonreciprocal polarization dispersion in which frequencies of the two waves propagating in one direction lie between the two frequencies of waves propagating in the opposite direction. Rotation of the system produces shifts of the frequencies so that variation in the difference between the separation between the two upper frequencies, which propagate in opposite directions, and the separation between the two lower frequencies, which propagate in opposite directions, is used to measure rotation rate.
REFERENCES:
patent: 3854819 (1974-12-01), Andringa
Bartlett Milton D.
McGraw Vincent P.
Pannone Joseph D.
Raytheon Company
Warren David M.
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