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:
Feb. 09, 2016
Filed:
Nov. 21, 2012
Applicant:
Mitutoyo Corporation, Kawasaki-shi, Kanagawa, JP;
Inventors:
Assignee:
MITUTOYO CORPORATION, Kawasaki-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/22 (2006.01); G01D 5/347 (2006.01);
U.S. Cl.
CPC ...
H03M 1/22 (2013.01); G01D 5/34707 (2013.01);
Abstract
A scale of a photoelectric encoder includes a base member and gratings on the base member. The gratings can be formed on the surface of the base member by plating and arranged at a prescribed pitch on the base member. The surface of the base member is a roughened surface which is roughened by sandblasting or with a chemical. The gratings are light absorptive gratings or light reflective metal gratings.