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. 04, 2017
Filed:
Dec. 08, 2014
Applicant:
Petrospec Engineering Ltd., Sherwood Park, CA;
Inventors:
Yi Yang, Vernon, CT (US);
Trevor Wayne MacDougall, South Dartmouth, MA (US);
Assignee:
PETROSPEC ENGINEERING LTD., Sherwood Park, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/353 (2006.01); G01B 9/02 (2006.01);
U.S. Cl.
CPC ...
G01B 9/02044 (2013.01); G01B 9/02008 (2013.01); G01B 2290/25 (2013.01);
Abstract
An optical sensor apparatus illuminates nested optical cavities by a broadband light source, such as a tunable laser. A composite interference signal is obtained from light reflected from the nested optical cavities, partial interference spectra are recovered from the composite interference signal, cavity depths are measured based on the partial interference spectra, and electrical signals are provided based on the final measured cavity depths.