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:
Jul. 14, 2015
Filed:
Mar. 05, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/04 (2006.01); H04N 1/028 (2006.01); F21V 9/04 (2006.01); F21V 13/08 (2006.01); F21V 9/06 (2006.01); G01J 3/00 (2006.01);
U.S. Cl.
CPC ...
H04N 1/02815 (2013.01); F21V 9/04 (2013.01); F21V 9/06 (2013.01); F21V 13/08 (2013.01); G01J 3/00 (2013.01);
Abstract
An illumination device and an image reading apparatus having improved heat resistance and spectral characteristics are provided. An illumination device used in an image reading apparatus that moves relative to a read area of a document includes: a light source; a light guide including an incident surface on which light from the light source is incident and an exit surface from which light from the light source exits; and a spectroscopic unit that is provided between the light source and the light guide and includes, on a surface of a glass substrate facing the light source, a multi-layer film for reflecting infrared light toward the light source.