JPS6449933A - Optical density measuring instrument - Google Patents

Optical density measuring instrument

Info

Publication number
JPS6449933A
JPS6449933A JP20668887A JP20668887A JPS6449933A JP S6449933 A JPS6449933 A JP S6449933A JP 20668887 A JP20668887 A JP 20668887A JP 20668887 A JP20668887 A JP 20668887A JP S6449933 A JPS6449933 A JP S6449933A
Authority
JP
Japan
Prior art keywords
measurement
sample
movable arm
display
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
JP20668887A
Other languages
Japanese (ja)
Inventor
Hitoshi Kamezawa
Mitsunobu Ota
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP20668887A priority Critical patent/JPS6449933A/en
Priority to US07/227,999 priority patent/US4986665A/en
Priority to GB08818568A priority patent/GB2208001A/en
Publication of JPS6449933A publication Critical patent/JPS6449933A/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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N21/3151—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using two sources of radiation of different wavelengths
    • 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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N2021/3181—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using LEDs
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N2021/635—Photosynthetic material analysis, e.g. chrorophyll
    • 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
    • G01N2021/8466—Investigation of vegetal material, e.g. leaves, plants, fruits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/062—LED's
    • G01N2201/0621—Supply

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To improve the operability of measurement and the visibility of a measured value display by employing such a rotary structure that pressing is possible with a finger pad part for a measurement part where a sample such as the green leaf of a plant is clipped, and providing a measurement display part contiguously to the rotary part. CONSTITUTION:The measurement part 1 consists of a light emission part and a light reception part, a main body 12 is provided with a movable arm part 2, and the measured value display part 10 is provided nearby the movable arm part 2. When a measurement is taken, the sample, e.g. the leaf of the plant is set between the substrate part 4 of the measurement part 1 and the movable arm part 2 which is open at a nonmeasurement time. Then the finger part 11 of the movable arm part 2 is pressed with a thumb to clip the sample between the substrate part 4 and arm part 2. Then light which is outputted by the light emission part of the measurement part 1 and transmitted through the sample is detected by the reception part and processed by an arithmetic part, whose arithmetic result is displayed on a display part 10.
JP20668887A 1987-08-06 1987-08-19 Optical density measuring instrument Pending JPS6449933A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP20668887A JPS6449933A (en) 1987-08-19 1987-08-19 Optical density measuring instrument
US07/227,999 US4986665A (en) 1987-08-06 1988-08-03 Optical density detector
GB08818568A GB2208001A (en) 1987-08-06 1988-08-04 Optical density detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20668887A JPS6449933A (en) 1987-08-19 1987-08-19 Optical density measuring instrument

Publications (1)

Publication Number Publication Date
JPS6449933A true JPS6449933A (en) 1989-02-27

Family

ID=16527466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20668887A Pending JPS6449933A (en) 1987-08-06 1987-08-19 Optical density measuring instrument

Country Status (1)

Country Link
JP (1) JPS6449933A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643816B1 (en) * 2004-07-08 2006-11-13 가부시끼가이샤 와이이씨 솔루션즈 Colorimetry device
JP2012057948A (en) * 2010-09-03 2012-03-22 Kobe Univ Transmission near infrared spectroscopic measurement device and transmission near infrared spectroscopic measurement method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100643816B1 (en) * 2004-07-08 2006-11-13 가부시끼가이샤 와이이씨 솔루션즈 Colorimetry device
JP2012057948A (en) * 2010-09-03 2012-03-22 Kobe Univ Transmission near infrared spectroscopic measurement device and transmission near infrared spectroscopic measurement method

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