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:
Apr. 18, 2017
Filed:
Oct. 29, 2014
Kabushiki Kaisha Yaskawa Denki, Kitakyushu-shi, JP;
Yasushi Yoshida, Kitakyushu, JP;
Yasuhiro Matsutani, Kitakyushu, JP;
Shiro Yoshidomi, Kitakyushu, JP;
Hiroshi Takada, Kitakyushu, JP;
Yuji Arinaga, Kitakyushu, JP;
Ikuma Murokita, Kitakyushu, JP;
Masanobu Harada, Kitakyushu, JP;
Hiroki Kondo, Kitakyushu, JP;
KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu-Shi, JP;
Abstract
An encoder includes a track having optical effecters arranged to have an absolute pattern in a measurement direction, a light source configured to emit diffusion light to the track, and a light receiving array configured to have light receiving elements arranged in the measurement direction and to receive light reflected or transmitted by the track. The light receiving elements fall within an area which is positioned corresponding to an area between the optical effecters and to which the light reflected by the track dose not reach.