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:
Oct. 02, 2018
Filed:
Jan. 27, 2017
Mitutoyo Corporation, Kawasaki, Kanagawa, JP;
Yoshiaki Kato, Chiba, JP;
MITUTOYO CORPORATION, Kawasaki, JP;
Abstract
The photoelectric encoderincludes a scale, and a detection headincluding a light emitting unit, an index, and a detection unit. The indexincludes a first index portionconsisting of diffraction portions and non-diffraction portions alternately juxtaposed at a predetermined pitch along the longitudinal direction of the scale, and a second index portionconsisting of diffraction portions and non-diffraction portions alternately juxtaposed at twice the pitch of the first index portion. The scaleis configured to include a first pattern portionconsisting of diffraction portions and non-diffraction portions alternately juxtaposed at a predetermined pitch along the longitudinal direction of the scale, and a second pattern portionconsisting of diffraction portions and non-diffraction portions arranged in a checkered pattern.