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:
May. 02, 2017
Filed:
Aug. 19, 2014
Applicant:
Canon Components, Inc., Saitama, JP;
Inventors:
Hidemasa Yoshida, Saitama, JP;
Yoshihiko Tsumekawa, Saitama, JP;
Assignee:
CANON COMPONENTS, INC., Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/028 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0096 (2013.01); H04N 1/02855 (2013.01);
Abstract
An illumination apparatus includes a light source and a light guide formed in a rod shape. An end surface in a longitudinal direction is an incident surface that receives light emitted from the light source. Diffusing patterns are formed on the light guide, and intervals between the diffusing patterns closer to the incident surface in a first area close to the incident surface are smaller than intervals between the diffusing patterns closer to the incident surface in a second area farther from the incident surface than the first area.