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:
Jan. 24, 2017
Filed:
Jun. 17, 2013
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Tomohiro Yamada, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01);
U.S. Cl.
CPC ...
G01B 9/02091 (2013.01); G01B 9/02004 (2013.01); G01B 9/02044 (2013.01); G01B 9/02069 (2013.01);
Abstract
An OCT apparatus includes a wavelength selector provided on an optical path between a light source unit and a pair of optical detection units, and having a wavelength selectivity with equal wavenumber intervals. A differential detection unit detects a differential between two interference lights detected by the two optical detection units, and an information acquisition unit obtains peak values in the temporal waveform of the intensity of the interference lights and acquires information about an object on the basis of the obtained peak values.