The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2001
Filed:
Oct. 21, 1999
Pei-Hwa Lo, Ramsey, NJ (US);
James E. Goodwin, Ramsey, NJ (US);
L-3 Communications Corporation, New York, NY (US);
Abstract
A fiber optic gyroscope for measuring a rotation rate of an object. The gyroscope includes a light source for generating a light beam and a bidirectional coupler for receiving and forwarding the light beam. A splitter splits the light beam forwarded from the coupler into a first beam and a second beam. A fiber optic coil receives the first and second beams and a phase modulator adjusts the phase of the first and second beams. A signal processor determines the rotational rate of the gyroscope based on the phase difference between the first and second beams. A drive circuit drives the phase modulator to adjust the phases of the first and second beams if the rotation rate of the gyroscope exceeds a certain threshold.