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
  • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
  • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
• • 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
  • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B17/00—Fire alarms; Alarms responsive to explosion
  • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
  • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
  • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Immunology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biochemistry (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Pathology (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Investigating Or Analysing Materials By Optical Means (AREA)
• Fire-Detection Mechanisms (AREA)
• Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4436016

Family Applications (1)

Country Status (8)

Families Citing this family (3)

• 1970
  • 1970-12-21 CH CH1890270A patent/CH520990A/de not_active IP Right Cessation
• 1971
  • 1971-12-10 DE DE19712161354 patent/DE2161354A1/de active Pending
  • 1971-12-14 US US00207791A patent/US3760395A/en not_active Expired - Lifetime
  • 1971-12-17 FR FR7145548A patent/FR2119459A5/fr not_active Expired
  • 1971-12-17 SE SE7116215A patent/SE371708B/xx unknown
  • 1971-12-21 GB GB5940771A patent/GB1366335A/en not_active Expired
  • 1971-12-21 AU AU37162/71A patent/AU451854B2/en not_active Expired
• 1978
  • 1978-01-27 JP JP1978008008U patent/JPS5517274Y2/ja not_active Expired

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