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:
Jul. 12, 2022
Filed:
Jul. 16, 2018
Nikon Corporation, Tokyo, JP;
Masahiko Goto, Tokyo, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
Provided is an encoder apparatus that is free from battery maintenance or has low frequency of battery maintenance. The encoder apparatus includes: a position detection system including: a scale; a light emitter that irradiates the scale with light; a light detector that changes a relative position thereof with the scale in response to movement of a mover; and a detector that detects position information on the mover based on a detection result of the light detector. The encoder apparatus also includes an electric signal generator that generates an electric signal in response to the movement of the mover; and a light emission adjuster that adjusts emission of light from the light emitter based on the electric signal.