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:
Sep. 19, 2017
Filed:
Mar. 13, 2013
Applicant:
Oxsensis Ltd, Chilton, Didcot, Oxfordshire, GB;
Inventor:
Ralf-Dieter Pechstedt, Chilton, GB;
Assignee:
Oxsensis Limited, Didcot, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01); G01D 5/353 (2006.01); G01L 9/00 (2006.01); G01K 11/32 (2006.01); G01P 15/08 (2006.01); G01L 19/00 (2006.01); G01P 1/00 (2006.01); G01P 15/093 (2006.01);
U.S. Cl.
CPC ...
G01D 5/35306 (2013.01); G01D 5/35332 (2013.01); G01K 11/3206 (2013.01); G01L 9/0079 (2013.01); G01L 19/0092 (2013.01); G01P 1/006 (2013.01); G01P 15/08 (2013.01); G01P 15/093 (2013.01);
Abstract
An optical sensor having one or more sensing interference elements is disclosed. A first detector function generates a coarse optical path difference signal for example using a discrete Fourier transform of a detected interference spectrum, and a second detector function generates a refined optical path difference signal using the coarse optical path difference signal and for example a cross correlation of the interference spectrum with one or more sets of periodic transfer functions.