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:
May. 06, 2025
Filed:
Feb. 22, 2022
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Shuichi Nagai, Osaka, JP;
Masaru Shiraishi, Osaka, JP;
Abstract
Optical encoder includes a light source, a reflector, and a light receiver. Reflector has a plurality of reflection areas that include M-code areas and reflects a light from light source by one or more areas, corresponding to n-bits, of M-code areas. Light receiver receives a reflection light from reflector to perform a photoelectric conversion on reflection light. M-code areas has a first face corresponding to first code information and a second face corresponding to second code information and having an inclination structure different from that of first face. Light receiver has first and second light-receiving groups. First light-receiving group includes a plurality of first light-receiving elements receiving reflection light reflected from first face. Second light-receiving group includes a plurality of second light-receiving elements receiving reflection light reflected from second face. Positions of first light-receiving elements and positions of second light-receiving elements are shifted from each other in one direction.