JPS5240187A - Automatic refractometer - Google Patents

Automatic refractometer

Info

Publication number
JPS5240187A
JPS5240187A JP11474175A JP11474175A JPS5240187A JP S5240187 A JPS5240187 A JP S5240187A JP 11474175 A JP11474175 A JP 11474175A JP 11474175 A JP11474175 A JP 11474175A JP S5240187 A JPS5240187 A JP S5240187A
Authority
JP
Japan
Prior art keywords
photoelectric conversion
conversion element
refractometer
automatic refractometer
measurement
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
JP11474175A
Other languages
Japanese (ja)
Inventor
Takashi Kida
Kazuyoshi Hiragoori
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 JP11474175A priority Critical patent/JPS5240187A/en
Publication of JPS5240187A publication Critical patent/JPS5240187A/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
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle

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 Optical Means (AREA)

Abstract

PURPOSE:To use a photoelectric conversion element in detection section and so compose the refractometer that the photoelectric conversion element is scanned several times to obtain one measurement result and the mean value of the measurements is taken out, thereby achieving the automation of measurement and obtaining highly reliable measurement results.
JP11474175A 1975-09-25 1975-09-25 Automatic refractometer Pending JPS5240187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11474175A JPS5240187A (en) 1975-09-25 1975-09-25 Automatic refractometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11474175A JPS5240187A (en) 1975-09-25 1975-09-25 Automatic refractometer

Publications (1)

Publication Number Publication Date
JPS5240187A true JPS5240187A (en) 1977-03-28

Family

ID=14645478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11474175A Pending JPS5240187A (en) 1975-09-25 1975-09-25 Automatic refractometer

Country Status (1)

Country Link
JP (1) JPS5240187A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104550A (en) * 1981-12-17 1983-06-22 Fujitsu Ltd Line selection system
JPS6083953U (en) * 1983-11-16 1985-06-10 中川　進 concentration meter
US4640616A (en) * 1984-12-06 1987-02-03 The Cambridge Instrument Company Plc Automatic refractometer
US4704029A (en) * 1985-12-26 1987-11-03 Research Corporation Blood glucose monitor
US5617201A (en) * 1993-09-01 1997-04-01 Janesko Oy Method for refractometer measuring using mathematical modelling
US7492447B2 (en) 2002-10-30 2009-02-17 Atago Co., Ltd. Refractometer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672777A (en) * 1969-10-30 1972-06-27 Sopelem Apparatus for sensing a change in light intensity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672777A (en) * 1969-10-30 1972-06-27 Sopelem Apparatus for sensing a change in light intensity

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104550A (en) * 1981-12-17 1983-06-22 Fujitsu Ltd Line selection system
JPS6083953U (en) * 1983-11-16 1985-06-10 中川　進 concentration meter
US4640616A (en) * 1984-12-06 1987-02-03 The Cambridge Instrument Company Plc Automatic refractometer
US4704029A (en) * 1985-12-26 1987-11-03 Research Corporation Blood glucose monitor
US5617201A (en) * 1993-09-01 1997-04-01 Janesko Oy Method for refractometer measuring using mathematical modelling
US7492447B2 (en) 2002-10-30 2009-02-17 Atago Co., Ltd. Refractometer

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