Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
  • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
  • H03M1/12—Analogue/digital converters
  • H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses
• • 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
  • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
• • 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
  • G01N21/59—Transmissivity
  • G01N21/5907—Densitometers
• • 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
  • G01N21/84—Systems specially adapted for particular applications
  • G01N21/86—Investigating moving sheets

Landscapes

• Physics & Mathematics (AREA)
• Immunology (AREA)
• Chemical & Material Sciences (AREA)
• Pathology (AREA)
• General Physics & Mathematics (AREA)
• Biochemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Analytical Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Theoretical Computer Science (AREA)
• Engineering & Computer Science (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Mathematical Physics (AREA)
• Investigating Or Analysing Materials By Optical Means (AREA)
• Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
• Radiation-Therapy Devices (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24106124

Family Applications (1)

Country Status (8)

Families Citing this family (7)

Family Cites Families (2)

• 1966
  • 1966-02-18 US US528546A patent/US3471242A/en not_active Expired - Lifetime
• 1967
  • 1967-02-01 GB GB4911/67A patent/GB1158409A/en not_active Expired
  • 1967-02-15 DE DE1522841A patent/DE1522841C3/de not_active Expired
  • 1967-02-15 DE DEG36456U patent/DE1958408U/de not_active Expired
  • 1967-02-16 ES ES336895A patent/ES336895A1/es not_active Expired
  • 1967-02-16 CH CH223667A patent/CH479065A/de not_active IP Right Cessation
  • 1967-02-17 FR FR95518A patent/FR1511926A/fr not_active Expired
  • 1967-02-17 NL NL6702384A patent/NL6702384A/xx unknown
  • 1967-02-17 FR FR95375A patent/FR1512651A/fr not_active Expired
  • 1967-02-17 BE BE694269D patent/BE694269A/xx unknown

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