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:
May. 24, 2005
Filed:
Mar. 19, 2003
Steven E. Muenter, Van Nuys, CA (US);
Kenneth C. Widen, Topanga, CA (US);
Steven E. Muenter, Van Nuys, CA (US);
Kenneth C. Widen, Topanga, CA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A heterodyne lateral grating interferometer having a laser signal received by an AOM which generates several defracted order beams including a zero order beam and higher order beams. A lens system reimages the defracted order beams onto a stationary phase grating. An RF drive signal is received by the AOM such that the spatial frequency of the traveling phase grating of the AOM is responsive to the frequency of the RF drive signal, and the optical phase modulation depth of the traveling phase grating is responsive to the power of the RF drive signal. A phase detector determines the phase of the zero order beam from the stationary phase grating with respect to the phase of the RF drive signal.