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:
May. 23, 2017
Filed:
May. 19, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Hidemitsu Sorimachi, Matsumoto, JP;
Shigeo Nojima, Azumino, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 27/42 (2006.01);
U.S. Cl.
CPC ...
G02B 27/4233 (2013.01); G02B 27/4222 (2013.01);
Abstract
A diffractive optics element includes a substrate configured of a sapphire substrate and a diffractive optics structure, provided on the substrate, that forms an image when a laser beam is incident thereon. The diffractive optics structure has a diffractive optics portion, and the diffractive optics portion has a base material and a diffractive optics layer disposed on the base material. The thickness of the base material is no greater than 20 μm.