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:
Jun. 04, 2013
Filed:
Aug. 31, 2010
Eiichi Hayashi, Atsugi, JP;
Takamichi Ohhashi, Yokohama, JP;
Go Takahashi, Kawasaki, JP;
Kan Aoki, Yamato, JP;
Eiichi Hayashi, Atsugi, JP;
Takamichi Ohhashi, Yokohama, JP;
Go Takahashi, Kawasaki, JP;
Kan Aoki, Yamato, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A plastic optical element for use in an optical scanning device including light effective portions that focus light, and at least one link portion that connects the light effective portions in the sub-scanning direction, the link portion forming a border arc having a curvature radius R of 2 mm or greater and contacting the light effective portions such that the tangent of the light effective portion at the connection point of the light effective portion and the border arc matches the tangent of the border arc at the connection point.