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:
Feb. 27, 2024
Filed:
Mar. 30, 2023
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Atsushi Saito, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G06F 3/03 (2006.01); G06F 3/0354 (2013.01); G06F 3/038 (2013.01);
U.S. Cl.
CPC ...
G02B 5/18 (2013.01); G06F 3/0308 (2013.01); G06F 3/03545 (2013.01); G02B 2005/1804 (2013.01); G06F 3/0383 (2013.01); G06F 3/0386 (2013.01);
Abstract
An electronic pen includes a light source configured to emit irradiation light, a rotating body configured to rotate and to reflect the irradiation light emitted from the light source, a first detection member configured to receive the irradiation light reflected by the rotating body, and a first diffraction element provided at an optical path from the light source to the first detection member and configured to diffract the irradiation light.