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:
Aug. 12, 2014
Filed:
Nov. 19, 2012
Canon Kabushiki Kaisha, Tokyo, JP;
Genichiro Kudo, Utsunomiya, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
An optical scanning apparatus, including: a light source; an incident optical system; and an imaging optical system, in which: the imaging optical system includes at least one plastic lens; in a sub-scanning section, principal rays of the beams intersect each other on an optical axis of the imaging optical system; the principal rays intersect each other at different positions between a case of entering a central region of the at least one plastic lens and a case of entering an end region of the at least one plastic lens; and the principal rays entering one of the central region and the end region of the at least one plastic lens intersect each other, and the principal rays entering another of the central region and the end region of the at least one plastic lens intersect each other.