Title:
Heater board, alkali metal cell unit and atomic oscillator
Document Type and Number:
Japanese Patent JP6308037
Kind Code:
B2
Abstract:
A heater substrate for heating an alkali metal cell including an alkali metal includes a first heater wiring formed in a region surrounding an alkali metal encapsulating part in which the alkali metal is encapsulated; a second heater wiring formed in the region surrounding the alkali metal encapsulating part and inside the first heater wiring; and a third heater wiring formed outside the first heater wiring. A first electric current flowing in the first heater wiring is divided into a second electric current flowing in the second heater wiring and a third electric current flowing in the third heater wiring. A direction of the first electric current is opposite to a direction of the second electric current and a direction of the third electric current.
Inventors:
Kazuhiko Adachi
Kazuhiro Harasaka
Shunichi Sato
Kazuhiro Harasaka
Shunichi Sato
Application Number:
JP2014121562A
Publication Date:
April 11, 2018
Filing Date:
June 12, 2014
Export Citation:
Assignee:
株式会社リコー
International Classes:
H05B3/10; H03L7/26
Domestic Patent References:
| JP2012191138A | ||||
| JP2006093893A | ||||
| JP2013038382A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito