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:
Oct. 31, 2017
Filed:
Mar. 24, 2015
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Azusa Sugawara, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 15/02 (2006.01); G03B 15/05 (2006.01);
U.S. Cl.
CPC ...
G03B 15/05 (2013.01); G03B 2215/0592 (2013.01);
Abstract
An illumination apparatus includes a light emitting unit, a first optical member arranged in front of the light emitting unit and including a first fresnel shape having condensing action, and a second optical member including a second fresnel shape having light diffusing action so as to face the first fresnel shape of the first optical member.