JPS52156681A - Smoke sensor of light scattering type - Google Patents

Smoke sensor of light scattering type

Info

Publication number
JPS52156681A
JPS52156681A JP7417876A JP7417876A JPS52156681A JP S52156681 A JPS52156681 A JP S52156681A JP 7417876 A JP7417876 A JP 7417876A JP 7417876 A JP7417876 A JP 7417876A JP S52156681 A JPS52156681 A JP S52156681A
Authority
JP
Japan
Prior art keywords
light scattering
smoke sensor
scattering type
sensor
light
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
JP7417876A
Other languages
Japanese (ja)
Inventor
Kuniharu Tatezuki
Toru Kahara
Kazunari Morisue
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP7417876A priority Critical patent/JPS52156681A/en
Publication of JPS52156681A publication Critical patent/JPS52156681A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To provide a sensor, which can easily check the sensitivity of a light receiving element, by providing a checking light emitting element which has its light emission made variable.
JP7417876A 1976-06-22 1976-06-22 Smoke sensor of light scattering type Pending JPS52156681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7417876A JPS52156681A (en) 1976-06-22 1976-06-22 Smoke sensor of light scattering type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7417876A JPS52156681A (en) 1976-06-22 1976-06-22 Smoke sensor of light scattering type

Publications (1)

Publication Number Publication Date
JPS52156681A true JPS52156681A (en) 1977-12-27

Family

ID=13539640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7417876A Pending JPS52156681A (en) 1976-06-22 1976-06-22 Smoke sensor of light scattering type

Country Status (1)

Country Link
JP (1) JPS52156681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946841A (en) * 1982-09-10 1984-03-16 Oki Denki Bosai Kk Photoelectric type smoke detector with test function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946841A (en) * 1982-09-10 1984-03-16 Oki Denki Bosai Kk Photoelectric type smoke detector with test function

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