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:
Jun. 18, 2019
Filed:
Mar. 20, 2017
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Nobuhito Hayashi, Chino, JP;
Yoshiyuki Maki, Suwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F 5/14 (2006.01); H03B 17/00 (2006.01); H03L 7/26 (2006.01); H01S 5/00 (2006.01); H03L 1/04 (2006.01); H01S 5/183 (2006.01); H01S 3/13 (2006.01);
U.S. Cl.
CPC ...
H03L 7/26 (2013.01); G04F 5/14 (2013.01); H01S 5/005 (2013.01); H03B 17/00 (2013.01); H03L 1/04 (2013.01); H01S 3/1305 (2013.01); H01S 5/183 (2013.01);
Abstract
A quantum interference device has an atomic cell which has alkali metal atoms disposed within. A light source emits light to excite the alkali metal atoms in the atomic cell. An optical element is disposed between the light source and the atomic cell, and enlarges the radiation angle of light emitted from the light source. A light detector detects light transmitted through the atomic cell.