JPS5462862A - Light source device of analytical apparatus - Google Patents

Light source device of analytical apparatus

Info

Publication number
JPS5462862A
JPS5462862A JP12876677A JP12876677A JPS5462862A JP S5462862 A JPS5462862 A JP S5462862A JP 12876677 A JP12876677 A JP 12876677A JP 12876677 A JP12876677 A JP 12876677A JP S5462862 A JPS5462862 A JP S5462862A
Authority
JP
Japan
Prior art keywords
light source
lamp
measurement
source lamp
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.)
Granted
Application number
JP12876677A
Other languages
Japanese (ja)
Other versions
JPS595855B2 (en
Inventor
Katsuo Kawachi
Takashi Kida
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 JP12876677A priority Critical patent/JPS595855B2/en
Publication of JPS5462862A publication Critical patent/JPS5462862A/en
Publication of JPS595855B2 publication Critical patent/JPS595855B2/en
Expired 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
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems

Landscapes

  • Physics & Mathematics (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)

Abstract

PURPOSE:To reduce the effect of the evolution of heat of a light source lamp and improve the reproducibility of measurement values by lighting the light source lamp with an automatic flashing means at the start of measurement and putting it out upon ending of the measurement and constantly supplying a small current to the light source light while not in measurement. CONSTITUTION:An analysis start signal S causes a light source lamp 1 to light and the light from the lamp 1 transmits between a refractive prism 4 and a sample cell 3, creating bright and dark images on a detector 9. From the detector 9, the pulse number within the range of the bright field part is fed to a video amplifier 10, where the mean value of measurements is taken and the digital quantity thereof is inputted to a D/A converter 13, by which a specific gravity value is measured. Upon ending of the measurement, a lamp driving circuit 17 goes OFF and the light source lamp 1 is put out. While it is held put out, a small current is constantly supplied to the filament of the light source lamp 1 through a preheating resistor 16 to eliminate the starting current at the lighting and prolong the life of the lamp 1.
JP12876677A 1977-10-28 1977-10-28 Refractometer or similar device Expired JPS595855B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12876677A JPS595855B2 (en) 1977-10-28 1977-10-28 Refractometer or similar device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12876677A JPS595855B2 (en) 1977-10-28 1977-10-28 Refractometer or similar device

Publications (2)

Publication Number Publication Date
JPS5462862A true JPS5462862A (en) 1979-05-21
JPS595855B2 JPS595855B2 (en) 1984-02-07

Family

ID=14992934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12876677A Expired JPS595855B2 (en) 1977-10-28 1977-10-28 Refractometer or similar device

Country Status (1)

Country Link
JP (1) JPS595855B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6235858U (en) * 1985-08-20 1987-03-03
WO2007143591A2 (en) * 2006-06-01 2007-12-13 Optiscan Biomedical Corporation Method and apparatus for driving a radiation source

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6235858U (en) * 1985-08-20 1987-03-03
JPH0545498Y2 (en) * 1985-08-20 1993-11-19
WO2007143591A2 (en) * 2006-06-01 2007-12-13 Optiscan Biomedical Corporation Method and apparatus for driving a radiation source
WO2007143591A3 (en) * 2006-06-01 2008-04-03 Optiscan Biomedical Corp Method and apparatus for driving a radiation source

Also Published As

Publication number Publication date
JPS595855B2 (en) 1984-02-07

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