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, 2017
Filed:
Jun. 19, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Masatsugu Koyama, Yokohama, JP;
Makoto Kojima, Atsugi, JP;
Yukiya Enokida, Kawasaki, JP;
Yukinobu Okura, Tokyo, JP;
Masato Tanaka, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G02B 27/16 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0221 (2013.01); G02B 5/0268 (2013.01); G02B 5/0278 (2013.01); G02B 27/16 (2013.01);
Abstract
A diffusing plate includes a microlens array in which a plurality of microlenses are arranged, wherein the microlenses have such a shape that a curvature of a sectional shape including a center line of the microlenses varies depending on a direction of the center line, and wherein microlenses that are different in the direction of a center line where the curvature of the outline is largest are arranged.