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. 29, 2014
Filed:
Apr. 20, 2011
Applicants:
Susumu Makinouchi, Zama, JP;
Akihiro Watanabe, Sendai, JP;
Inventors:
Susumu Makinouchi, Zama, JP;
Akihiro Watanabe, Sendai, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
An encoder emits modulated light from a light source section and lets a first light and a second light separated from the modulated light interfere with each other in a moving grating. In the encoder, the light emitted from the light source section is electrically modulated, and the first light and the second light have different light path lengths.
Makinouchi, Susumu. (2014). Encoder that optically detects positional information of a moving body from different optical paths lengths (U.S. Patent No. 8710425). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8710425
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile