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. 10, 2015
Filed:
Apr. 20, 2011
Applicants:
Yoshihiro Ohba, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/385 (2006.01); G01D 15/06 (2006.01); G03G 15/01 (2006.01); B41J 2/47 (2006.01); G02B 5/00 (2006.01); G02B 26/12 (2006.01); B41J 2/455 (2006.01);
U.S. Cl.
CPC ...
B41J 2/473 (2013.01); G02B 5/005 (2013.01); G02B 26/124 (2013.01); B41J 2/455 (2013.01);
Abstract
A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs.