JPS56107149A - Densitometer - Google Patents

Densitometer

Info

Publication number
JPS56107149A
JPS56107149A JP930480A JP930480A JPS56107149A JP S56107149 A JPS56107149 A JP S56107149A JP 930480 A JP930480 A JP 930480A JP 930480 A JP930480 A JP 930480A JP S56107149 A JPS56107149 A JP S56107149A
Authority
JP
Japan
Prior art keywords
light
protein
core
electric signal
density
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
JP930480A
Other languages
Japanese (ja)
Inventor
Tomiji Minekane
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP930480A priority Critical patent/JPS56107149A/en
Publication of JPS56107149A publication Critical patent/JPS56107149A/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
    • G01N21/431—Dip refractometers, 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 Optical Means (AREA)

Abstract

PURPOSE:To arrange so that a device may be applied to an automatic biochemical analysis unit by making possible a precise and quick measurement of the density of protein, etc. in blood through use of optical fiber. CONSTITUTION:A light from a light source 1 is projected into an optical fiber 3 through the intermediary of a condensing lens. The light incident into the fiber 3 passes through U-shaped intermediate part A immersed in a body to be detected 5 such as blood inside a vessel 4, reaching the light-receiving surface of photomal 6. At that time, a core 3b is exposed at the intermediate part A and the refraction index n2 of the core 3b is set slightly higher than the refraction index n1 of protein in the body to be detected. Consequently, a light passing through the core 3b leaks and reduces. This reduction value changes according to the quantity of protein. The reduced light obtained from the emission part of the fiber 3 is converted to an electric signal by means of the photomal 6 and is input to a density arithmetic unit through an amplifier 7. Following this process, an electric signal based on the reduced light and an electric signal based on an incident light from the light source 1 are compared to seek a reduced light. This reduced light is converted to a density of protein and is displayed on a meter 9.
JP930480A 1980-01-31 1980-01-31 Densitometer Pending JPS56107149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP930480A JPS56107149A (en) 1980-01-31 1980-01-31 Densitometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP930480A JPS56107149A (en) 1980-01-31 1980-01-31 Densitometer

Publications (1)

Publication Number Publication Date
JPS56107149A true JPS56107149A (en) 1981-08-25

Family

ID=11716722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP930480A Pending JPS56107149A (en) 1980-01-31 1980-01-31 Densitometer

Country Status (1)

Country Link
JP (1) JPS56107149A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650856A (en) * 1995-06-16 1997-07-22 Brown University Research Foundation Fiber laser intra-cavity spectroscope
US6184980B1 (en) * 1995-02-27 2001-02-06 The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations Fiber optic sensor for petroleum

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6184980B1 (en) * 1995-02-27 2001-02-06 The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations Fiber optic sensor for petroleum
US5650856A (en) * 1995-06-16 1997-07-22 Brown University Research Foundation Fiber laser intra-cavity spectroscope

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