JPS57146134A - High-sensitive luminous intensity meter - Google Patents

High-sensitive luminous intensity meter

Info

Publication number
JPS57146134A
JPS57146134A JP3163081A JP3163081A JPS57146134A JP S57146134 A JPS57146134 A JP S57146134A JP 3163081 A JP3163081 A JP 3163081A JP 3163081 A JP3163081 A JP 3163081A JP S57146134 A JPS57146134 A JP S57146134A
Authority
JP
Japan
Prior art keywords
output
zero
counter
becomes
amplifier
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.)
Granted
Application number
JP3163081A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6218009B2 (enExample
Inventor
Mitsuo Shimada
Tsuneo Shimazaki
Minoru Taguchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3163081A priority Critical patent/JPS57146134A/ja
Publication of JPS57146134A publication Critical patent/JPS57146134A/ja
Publication of JPS6218009B2 publication Critical patent/JPS6218009B2/ja
Granted 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
    • G01N21/25—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
    • G01N21/274—Calibration, base line adjustment, drift correction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (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)
JP3163081A 1981-03-05 1981-03-05 High-sensitive luminous intensity meter Granted JPS57146134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3163081A JPS57146134A (en) 1981-03-05 1981-03-05 High-sensitive luminous intensity meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3163081A JPS57146134A (en) 1981-03-05 1981-03-05 High-sensitive luminous intensity meter

Publications (2)

Publication Number Publication Date
JPS57146134A true JPS57146134A (en) 1982-09-09
JPS6218009B2 JPS6218009B2 (enExample) 1987-04-21

Family

ID=12336526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3163081A Granted JPS57146134A (en) 1981-03-05 1981-03-05 High-sensitive luminous intensity meter

Country Status (1)

Country Link
JP (1) JPS57146134A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8382101B2 (en) 2008-03-27 2013-02-26 Canon Kabushiki Kaisha Sheet conveying apparatus and image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8382101B2 (en) 2008-03-27 2013-02-26 Canon Kabushiki Kaisha Sheet conveying apparatus and image forming apparatus

Also Published As

Publication number Publication date
JPS6218009B2 (enExample) 1987-04-21

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