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. 29, 2011
Filed:
Apr. 10, 2009
Applicants:
Atsushi Tominaga, Miura-gun, JP;
Takashi Kanno, Asao-ku, JP;
Inventors:
Atsushi Tominaga, Miura-gun, JP;
Takashi Kanno, Asao-ku, JP;
Assignee:
Mitutoyo Corporation, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A scale for a photoelectric encoder effectively protects the base of the scale from corrosion, rust, and flaws. The scale includes a base, a light-absorbing layer including a DLC layer formed on at least one surface of the base, and light-reflecting layers with a higher reflectance than that of the light-absorbing layer with respect to light falling within a wavelength range and formed into a grating on the light-absorbing layer.