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:
Jul. 16, 2019
Filed:
Nov. 03, 2015
Applicant:
Nikon Corporation, Tokyo, JP;
Inventor:
Noriaki Kandaka, Sagamihara, JP;
Assignee:
NIKON CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F21V 9/06 (2018.01); G02B 5/08 (2006.01); G03F 1/24 (2012.01); G03F 7/20 (2006.01); G03F 7/32 (2006.01); G21K 1/06 (2006.01); G03F 1/52 (2012.01);
U.S. Cl.
CPC ...
G02B 5/0891 (2013.01); G02B 5/0816 (2013.01); G03F 1/24 (2013.01); G03F 1/52 (2013.01); G03F 7/2004 (2013.01); G03F 7/32 (2013.01); G03F 7/70316 (2013.01); G21K 1/062 (2013.01); G21K 1/067 (2013.01);
Abstract
An optical element includes: a base; a multilayer film which is provided on the base and in which a plurality of unit laminate structures are laminated, each laminate structure having a first layer and a second layer provided on the first layer; and a plurality of spacer layers which are each provided at a different one of a plurality of interlaminar positions located between the unit laminate structures.