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:
Dec. 31, 2019
Filed:
Nov. 11, 2017
Applicants:
Fusao Ishii, Pittsburg, PA (US);
Nakanishi Mikiko, Tokyo, JP;
Takahashi Kazuhiko, Tokyo, JP;
Abrakawa Yuji, Tokyo, JP;
Keiichi Murakami, Tokyo, JP;
Inventors:
Fusao Ishii, Pittsburg, PA (US);
Nakanishi Mikiko, Tokyo, JP;
Takahashi Kazuhiko, Tokyo, JP;
Abrakawa Yuji, Tokyo, JP;
Keiichi Murakami, Tokyo, JP;
Assignees:
Other;
DOCOMO Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/00 (2006.01); G02B 5/18 (2006.01); C03C 15/02 (2006.01); G03F 1/26 (2012.01); G03F 7/20 (2006.01); G03F 7/26 (2006.01); G03F 7/40 (2006.01);
U.S. Cl.
CPC ...
G03F 7/0005 (2013.01); C03C 15/02 (2013.01); G02B 5/1857 (2013.01); G03F 1/26 (2013.01); G03F 7/2022 (2013.01); G03F 7/26 (2013.01); G03F 7/40 (2013.01); G03F 7/70425 (2013.01);
Abstract
Manufacturing methods are disclosed to produce DOE, HOE and Fresnel optical elements. These methods enable low cost manufacturing with high precision. The methods include lithography, roll-to-roll imprint and UV-casting.