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:
Mar. 19, 2019
Filed:
Mar. 01, 2017
Applicant:
Nikon Corporation, Tokyo, JP;
Inventors:
Shintaro Hikichi, Sendai, JP;
Hideaki Sugiyama, Yokohama, JP;
Assignee:
NIKON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/165 (2006.01); G01D 5/347 (2006.01); G01D 5/12 (2006.01); H02K 5/02 (2006.01); H02K 15/00 (2006.01);
U.S. Cl.
CPC ...
G01D 5/165 (2013.01); G01D 5/12 (2013.01); G01D 5/34707 (2013.01); H02K 5/02 (2013.01); H02K 15/00 (2013.01); G01D 5/3473 (2013.01);
Abstract
An encoder includes a scale unit having a substrate configured of a metal material and in which a pattern is formed on a first surface of the substrate and a passive state member is formed on a second surface different from the first surface in the substrate, and a detection unit that is configured to move relative to the scale unit and detects the pattern.