Title:
位置変換器
Document Type and Number:
Japanese Patent JP5595550
Kind Code:
B2
Abstract:
Provided is a position transducer which can be manufactured at low cost, improve the signal-to-noise ratio of an output obtained from a detector, and obtain a stable output even if the temperature changes. A position transducer 100 includes a butterfly-shaped reflector 7 attached to a rotating shaft 2 of a rotation restriction motor 1, an LED die 4 disposed to face a central portion of the reflection surface of the reflector 7, a diffused-light absorbing member disposed on the surfaces of a diffused light absorber 3 and a case 5, installed on the fixed side of the motor 1 so as to surround the reflector 7 with a distance from the reflector 7 at the rear of the reflector 7 as viewed from the LED die 4 and absorbing illumination light from the LED die 4 which has not illuminated the reflection surface, and detectors 11 mounted on the same printed circuit board 6 as the LED die 4 to detect an image reflected by the reflector 7.
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Inventors:
Hideaki Sato
Kazushige Ogata
Naoki Ota
House of woods Asuka
Takeda 奉学
Kazushige Ogata
Naoki Ota
House of woods Asuka
Takeda 奉学
Application Number:
JP2013070399A
Publication Date:
September 24, 2014
Filing Date:
March 28, 2013
Export Citation:
Assignee:
Citizen Chiba precision incorporated company
Citizen Holdings Co., Ltd.
Citizen Holdings Co., Ltd.
International Classes:
G01D5/347; H02K11/00
Attorney, Agent or Firm:
Aoki 篤
Tsuruta Junichi
Tomohiro Minamiyama
Koichi Itsubo
Kobayashi Dragon
Tsuruta Junichi
Tomohiro Minamiyama
Koichi Itsubo
Kobayashi Dragon
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