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:
Nov. 24, 2009
Filed:
Sep. 14, 2006
Applicants:
Hideaki Inoue, Musashimurayama, JP;
Toshiharu Arai, Akishima, JP;
Inventors:
Hideaki Inoue, Musashimurayama, JP;
Toshiharu Arai, Akishima, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 7/28 (2006.01); G03B 13/20 (2006.01); G01C 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase difference sensor is arranged toward a target object such that the sensor can rotate at least 180° on its sensor optical axis. As the phase difference sensor rotates, the angle of a sensor viewing field is changed, and the distance to the target object is correctly computed using results measured before and after the change in the angle.