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:
Jan. 31, 2012
Filed:
May. 05, 2009
Seiichiro Mori, Utsunomiya, JP;
Seiichiro Mori, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is an imaging optical unit used in an image reading apparatus for imaging image information on a photoelectric conversion element. The imaging optical unit includes a case and an imaging optical system having multiple reflecting members housed and disposed in the case. The reflecting member has a mirror surface for detecting assembly performance in the case on a side opposite to an optical surface for performing an imaging action. A light beam from a light source unit is projected to the mirror surface of the reflecting member and reflection light from the mirror surface is used for detecting one of a shift of posture and a distortion of the reflecting member.