Title:
防犯用センサ装置
Document Type and Number:
Japanese Patent JP4686699
Kind Code:
B2
Abstract:
To provide an anti-thief security sensor assembly wherein an optical axis adjustment of a beam projector can be accurately achieved merely by physically opening a cover of a beam projecting unit while a cover of a beam receiving unit is not opened physically, the anti-thief security sensor assembly includes a beam projecting unit (1) for emitting an infrared beam IR and having a projector cover (21A) mounted on a projector base (20A) so as to cover and protect a sensor circuit. This beam projecting unit (1) includes an opening detecting switch (7) for detecting the physical opening of the projector cover (21A) and a transmission request generating circuit (8) operable in response to the detection by the opening detecting switch (7) to output a received beam level transmission request signal B to the beam receiving unit (2). The beam receiving unit (2) for receiving the infrared beam IR from the beam projecting unit 1 includes a level output circuit (52) operable in response to receipt of the received beam level transmission request signal B to transmit to the beam projecting unit (1) a level display signal C indicative of the amount of the infrared beam received by the beam receiving unit (2).
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Inventors:
Masahito Iwasawa
Yuko Ikeda
Hatano Tsuyoshi
Sun Bunkatsu
Yuko Ikeda
Hatano Tsuyoshi
Sun Bunkatsu
Application Number:
JP2001293568A
Publication Date:
May 25, 2011
Filing Date:
September 26, 2001
Export Citation:
Assignee:
Optex Co., Ltd.
International Classes:
G01V8/10; G08B13/183; G01J1/02; G01J1/42; G08B29/04
Domestic Patent References:
| JP2551019Y2 | ||||
| JP3025221U | ||||
| JP2794100B2 | ||||
| JP9210772A |
Attorney, Agent or Firm:
Shuji Sugimoto
Masashi Noda
Masashi Noda