JPS56148041A - Reflected light quantity detector - Google Patents

Reflected light quantity detector

Info

Publication number
JPS56148041A
JPS56148041A JP5213480A JP5213480A JPS56148041A JP S56148041 A JPS56148041 A JP S56148041A JP 5213480 A JP5213480 A JP 5213480A JP 5213480 A JP5213480 A JP 5213480A JP S56148041 A JPS56148041 A JP S56148041A
Authority
JP
Japan
Prior art keywords
reflected light
receiving element
light quantity
light
irradiated area
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
JP5213480A
Other languages
Japanese (ja)
Other versions
JPS628740B2 (en
Inventor
Kinjiro Yokota
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.)
Fujitsu General Ltd
Gen Co Ltd
Original Assignee
Fujitsu General Ltd
Gen 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 Fujitsu General Ltd, Gen Co Ltd filed Critical Fujitsu General Ltd
Priority to JP5213480A priority Critical patent/JPS56148041A/en
Publication of JPS56148041A publication Critical patent/JPS56148041A/en
Publication of JPS628740B2 publication Critical patent/JPS628740B2/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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres

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 The Use Of Chemical Reactions (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To make it possible to obtain both a constantly stable reflected light quantity and stable measurement results by inclining the optical axis of a light source with respect to that of the reflected light in order to change the size of the irradiated area so that the reflected light quantity can be corrected. CONSTITUTION:A light-receiving element 3 is provided vertically above the bottom surface 2 of a transfer path 1 to transfer a sheet-shaped object A to be inspected, and the optical axis of a light source 4 is inclined with respect to that of the light- receiving element 3 and set so that the maximum irradiated area can be obtained when the object A is at the remotest position from the light-receiving element 3. When the distance between the light-receiving element 3 and the object A increases, the irradiated area increases, so that the decrease in the reflected light quantity can be covered relatively. On the other hand, when said distance decreases, the irradiated area decreases, so that the increase in the reflected light quantity can be restrained. Thereby, if the distance between the light-receiving element and the object being inspected changes, the reflected light quantity can be made approximately constant. Accordingly, the measurement results can be stabilized.
JP5213480A 1980-04-18 1980-04-18 Reflected light quantity detector Granted JPS56148041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5213480A JPS56148041A (en) 1980-04-18 1980-04-18 Reflected light quantity detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5213480A JPS56148041A (en) 1980-04-18 1980-04-18 Reflected light quantity detector

Publications (2)

Publication Number Publication Date
JPS56148041A true JPS56148041A (en) 1981-11-17
JPS628740B2 JPS628740B2 (en) 1987-02-24

Family

ID=12906392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5213480A Granted JPS56148041A (en) 1980-04-18 1980-04-18 Reflected light quantity detector

Country Status (1)

Country Link
JP (1) JPS56148041A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58175447U (en) * 1982-05-18 1983-11-24 株式会社ケツト科学研究所 whiteness meter
JPS6246238A (en) * 1985-08-23 1987-02-28 Omron Tateisi Electronics Co Bio-chemical measuring apparatus
JPS6247553A (en) * 1985-08-27 1987-03-02 Omron Tateisi Electronics Co Biochemical measuring instrument
JPS6254165A (en) * 1985-09-02 1987-03-09 Omron Tateisi Electronics Co Biochemical measuring instrument
US4988206A (en) * 1986-07-04 1991-01-29 De La Rue Systems Limited Methods are apparatus for monitoring the diffuse reflectivity of a surface
EP0426047A2 (en) * 1989-10-30 1991-05-08 Terumo Kabushiki Kaisha Reflected light measuring instrument
US5028139A (en) * 1987-07-16 1991-07-02 Miles Inc. Readhead for reflectance measurement of distant samples
WO2006015463A2 (en) * 2004-08-13 2006-02-16 K.U.Leuven Research And Development Soil survey device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58175447U (en) * 1982-05-18 1983-11-24 株式会社ケツト科学研究所 whiteness meter
JPS643063Y2 (en) * 1982-05-18 1989-01-26
JPS6246238A (en) * 1985-08-23 1987-02-28 Omron Tateisi Electronics Co Bio-chemical measuring apparatus
JPS6247553A (en) * 1985-08-27 1987-03-02 Omron Tateisi Electronics Co Biochemical measuring instrument
JPS6254165A (en) * 1985-09-02 1987-03-09 Omron Tateisi Electronics Co Biochemical measuring instrument
US4988206A (en) * 1986-07-04 1991-01-29 De La Rue Systems Limited Methods are apparatus for monitoring the diffuse reflectivity of a surface
US5028139A (en) * 1987-07-16 1991-07-02 Miles Inc. Readhead for reflectance measurement of distant samples
EP0426047A2 (en) * 1989-10-30 1991-05-08 Terumo Kabushiki Kaisha Reflected light measuring instrument
WO2006015463A2 (en) * 2004-08-13 2006-02-16 K.U.Leuven Research And Development Soil survey device
WO2006015463A3 (en) * 2004-08-13 2006-07-13 Leuven K U Res & Dev Soil survey device

Also Published As

Publication number Publication date
JPS628740B2 (en) 1987-02-24

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