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:
Mar. 06, 2012
Filed:
Dec. 08, 2008
Applicants:
Mitsuo Suzuki, Kanagawa, JP;
Masaki Satoh, Miyagi, JP;
Haruyuki Suzuki, Kanagawa, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/08 (2006.01); G02B 26/10 (2006.01); G02B 26/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical scanner is disclosed that has an optical source unit that emits a laser beam; a vibration mirror by which the laser beam from the optical source unit is deflected to scan; a driving circuit that vibrates the vibration mirror based on a driving signal generated from a reference clock; a light-receiving element that receives the laser beam within the scanning area of the laser beam; and a controlling unit that corrects the driving signal so as to make a phase deviation between the reference phase clock and the output signal of the light-receiving element constant.