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:
Oct. 04, 2011
Filed:
Oct. 05, 2006
Applicant:
Taku Amada, Kanagawa, JP;
Inventor:
Taku Amada, Kanagawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 15/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A disclosed optical scanning device scans an object scanning surface with a light beam projected from a light source and traveling through an optical system. The optical scanning device includes a liquid crystal element configured to modulate a phase. The liquid crystal element is driven by electric signals and provided on a light path between the light source and the object scanning surface. The liquid crystal element generates different power components in a main scanning direction and a sub scanning direction under temperature variations.