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. 01, 2024
Filed:
Jun. 23, 2020
Applicant:
Dai Nippon Printing Co., Ltd., Tokyo-to, JP;
Inventors:
Assignee:
DAI NIPPON PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 5/00 (2018.01); G02B 5/02 (2006.01); G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
F21V 5/002 (2013.01); G02B 5/0247 (2013.01); G02B 5/0284 (2013.01); G02B 5/1866 (2013.01); G02B 2005/1804 (2013.01);
Abstract
A diffusion member includes a first layer and a second layer, in this order, wherein the first layer has a light transmissivity and a light diffusivity, in the second layer, a reflectance of light increases as an absolute value of an incident angle with respect to a first layer side surface of the second layer decreases, and a transmittance of light increases as an absolute value of an incident angle with respect to a first layer side surface of the second layer increases.