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. 26, 2021
Filed:
May. 26, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Hideo Ukuda, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G02B 27/00 (2006.01); G02B 27/42 (2006.01);
U.S. Cl.
CPC ...
G02B 5/1866 (2013.01); G02B 5/1847 (2013.01); G02B 5/1852 (2013.01); G02B 27/0018 (2013.01); G02B 27/0025 (2013.01); G02B 27/4272 (2013.01); G02B 2207/121 (2013.01);
Abstract
A laminated diffractive optical element includes a first resin layer having a first lattice shape and a second resin layer having a second lattice shape. The first resin layer and the second resin layer are laminated in this order on a first substrate so that the lattice shapes oppose each other. The first resin layer contains a resin and transparent conductive particles. The transparent conductive particles have an average particle size of 1 nm to 100 nm. A ratio of a polymer of an energy curable resin raw material having a long diameter of 1 μm to 10 μm in the first resin layer is 70 pieces/mmor less.