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:
Apr. 22, 2008
Filed:
Nov. 17, 2005
Glen A. Sanders, Scottsdale, AZ (US);
Grenville Hughes, Wayzata, MN (US);
Thomas Keyser, Plymouth, MN (US);
Lee K. Strandjord, Tonka Bay, MN (US);
Glen A. Sanders, Scottsdale, AZ (US);
Grenville Hughes, Wayzata, MN (US);
Thomas Keyser, Plymouth, MN (US);
Lee K. Strandjord, Tonka Bay, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Methods and apparatus are provided for a low cost optical gyro with a free space closed optical path. A ring resonator comprises a substrate and reflectors formed or placed on the substrate. The reflectors comprise a closed optical path and are configured to direct each of first and second light beams in a different counter-propagating direction in the closed optical path. Each of the first and second light beams frequencies are tuned to the resonance frequency of the resonator in the direction of propagation for which the light beam is circulating in the closed optical path.