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:
Aug. 23, 1988
Filed:
Jan. 23, 1986
Baruch Fischer, Neve Shaanan, IL;
Technion Research & Development Foundation Ltd., Technion, IL;
Abstract
Optical apparatus, particularly useful as an optical gyro for measuring rotation, comprises a light source, an optical system defining a closed-loop optical path, an optical-wave-mixer producing form the light source beam an oscillating beam in the closed-loop optical path, and a circuit for measuring the phase or frequency shift produced in the oscillating beam by the optical-wave-mixer resulting from the non-reciprocal or reciprocal phase-shift thereof. A mathematical analysis is set forth showing how the non-reciprocal phase-shift is related to the frequency shift, so that the frequency shift provides a measurement of the non-reciprocal phase-shift, which depends on the rotation of the closed-loop ring optical path, thereby enabling the apparatus to serve as an optical gyro.