Ring laser gyroscope with tilting mirrors
First Claim
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1. A ring laser gyroscope with tilting mirrors comprising:
- a frame;
cathode and anode means mounted on said frame for producing two counterpropagating waves traveling in opposite directions about an optical path within said frame;
four tiltable mirror assemblies mounted on said frame for defining said optical path;
path length control electronic means for maintaining a constant length of said optical path; and
,sinusoidal drive signal means connected to said four tiltable mirror assemblies for sinusoidally tilting said tiltable mirror assemblies to sinusoidally rotate said optical path.
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Abstract
A ring laser gyro has tilting mirrors that can be sinusoidally tilted and therefore cause the optical path defined by the mirrors to be sinusoidally rotated (dithered). The dithering of the mirrors takes place in an angular motion. The mirrors are driven by the same drive signal therefore eliminating the need to precisely control the amplitude and phase.
32 Citations
14 Claims
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1. A ring laser gyroscope with tilting mirrors comprising:
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a frame; cathode and anode means mounted on said frame for producing two counterpropagating waves traveling in opposite directions about an optical path within said frame; four tiltable mirror assemblies mounted on said frame for defining said optical path; path length control electronic means for maintaining a constant length of said optical path; and
,sinusoidal drive signal means connected to said four tiltable mirror assemblies for sinusoidally tilting said tiltable mirror assemblies to sinusoidally rotate said optical path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A ring laser gyroscope with tilting mirrors comprising:
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a frame; cathode and anode means mounted on said frame for producing counterpropagating waves traveling in opposite directions about an optical path within said frame; a plurality of tiltable mirror assemblies mounted on said frame for defining said optical path; path length control electronic means of maintaining a constant length of said optical path; and
,sinusoidal drive signal means connected to said plurality of tiltable mirror assemblies for sinusoidally tilting said tiltable mirror assemblies to sinusoidally rotate said optical path. - View Dependent Claims (11, 12, 13, 14)
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Specification