JPS57203926A - Pyro-electric type infrared detection device - Google Patents

Pyro-electric type infrared detection device

Info

Publication number
JPS57203926A
JPS57203926A JP56088399A JP8839981A JPS57203926A JP S57203926 A JPS57203926 A JP S57203926A JP 56088399 A JP56088399 A JP 56088399A JP 8839981 A JP8839981 A JP 8839981A JP S57203926 A JPS57203926 A JP S57203926A
Authority
JP
Japan
Prior art keywords
elements
pyro
infrared light
electrodes
electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56088399A
Other languages
Japanese (ja)
Inventor
Takeo Ishigaki
Kunio Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56088399A priority Critical patent/JPS57203926A/en
Publication of JPS57203926A publication Critical patent/JPS57203926A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

PURPOSE:To avoid ERRONEOUS movement due to the variation in the ambient temperature and mixing-in of mechanical vibration and noises by providing a combination in which a pair of pyro-electric type infrared light detection elements are connected in series so as to make their directions of polarization opposite and alternately making and breaking infrared light that falls upon those detection elements. CONSTITUTION:The device is constituted with pyro-electric elements 61 and 62, super- high resistance 63, FET64, output resistance 65, and the pyro-electric elements 61 and 62 are connected in series with their direction of polarization reversed. Both elements 61 and 62 are senstive to infrared light. In other words, the pyro-electric materials 81 and 82 are mutually polarized in the same direction, and infrared absorption electrodes 84 and 86 are respectively vacuum-evaporated on the surface on which positive induction charge is produced. Electrodes that oppose the electrodes 84 and 86 are provided with infrared light reflecting electrodes 83 and 85. When infrared incident light is irradiated to both elements at the same time, the outputs signals of those elements have mutually opposite signs, because of their opposite polarizations, nullifying each other's singal and delivering no signal from lead wires 87 and 89. However, if a chopper 80 is used to irradiate infrared light to both elements alternately, signal output is obtained.
JP56088399A 1981-06-09 1981-06-09 Pyro-electric type infrared detection device Pending JPS57203926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56088399A JPS57203926A (en) 1981-06-09 1981-06-09 Pyro-electric type infrared detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56088399A JPS57203926A (en) 1981-06-09 1981-06-09 Pyro-electric type infrared detection device

Publications (1)

Publication Number Publication Date
JPS57203926A true JPS57203926A (en) 1982-12-14

Family

ID=13941708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56088399A Pending JPS57203926A (en) 1981-06-09 1981-06-09 Pyro-electric type infrared detection device

Country Status (1)

Country Link
JP (1) JPS57203926A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153133A (en) * 1983-02-22 1984-09-01 Tdk Corp Infrared-ray detector
US5021660A (en) * 1988-11-07 1991-06-04 Matsushita Electric Industrial Co., Ltd. Pyroelectric infrared detector and driving method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141644A (en) * 1979-04-12 1980-11-05 Philips Nv Pyroelectric type radiation detector and circuit arrangement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141644A (en) * 1979-04-12 1980-11-05 Philips Nv Pyroelectric type radiation detector and circuit arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153133A (en) * 1983-02-22 1984-09-01 Tdk Corp Infrared-ray detector
US5021660A (en) * 1988-11-07 1991-06-04 Matsushita Electric Industrial Co., Ltd. Pyroelectric infrared detector and driving method therefor

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