JPS5610230A - Optical sound spectroscopic analyzer - Google Patents

Optical sound spectroscopic analyzer

Info

Publication number
JPS5610230A
JPS5610230A JP8398779A JP8398779A JPS5610230A JP S5610230 A JPS5610230 A JP S5610230A JP 8398779 A JP8398779 A JP 8398779A JP 8398779 A JP8398779 A JP 8398779A JP S5610230 A JPS5610230 A JP S5610230A
Authority
JP
Japan
Prior art keywords
light source
optical sound
sample
modulated
driving power
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
JP8398779A
Other languages
Japanese (ja)
Other versions
JPS6321130B2 (en
Inventor
Noriaki Honma
Katsumi Takami
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 JP8398779A priority Critical patent/JPS5610230A/en
Publication of JPS5610230A publication Critical patent/JPS5610230A/en
Publication of JPS6321130B2 publication Critical patent/JPS6321130B2/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
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids

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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To carry out analysis in a stable condition by a method wherein a semiconductor is used for light source, the driving power is modulated to modulate luminous intensity, and an electric signal synchronized with a phase of a modulation signal of the driving power and generated by a sample optical sound effect is recorded. CONSTITUTION:A light radiated from a light source 1 is modulated by modulating a driving power of the light source 1 with a signal of a modulating frequency oscillator 16. A modulated light from the light source 1 is applied to a sample in an optical sound cell 6 through a condensing lens 5. An optical sound effect arising on the sample is detected on a microphone in the optical sound cell and outputted as an electric signal. The electric output is amplified through a preamplifier 7, locked in through a lock-in amplifier 8, a phase detection is carried out between it and a modulation frequency of the light source oscillated from the frequency oscillator 16, an electric signal synchronized with the modulation frequency of the light source is outputted into a recorder 9, and thus an optical sound spectrum of the measured sample is recorded.
JP8398779A 1979-07-04 1979-07-04 Optical sound spectroscopic analyzer Granted JPS5610230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8398779A JPS5610230A (en) 1979-07-04 1979-07-04 Optical sound spectroscopic analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8398779A JPS5610230A (en) 1979-07-04 1979-07-04 Optical sound spectroscopic analyzer

Publications (2)

Publication Number Publication Date
JPS5610230A true JPS5610230A (en) 1981-02-02
JPS6321130B2 JPS6321130B2 (en) 1988-05-02

Family

ID=13817881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8398779A Granted JPS5610230A (en) 1979-07-04 1979-07-04 Optical sound spectroscopic analyzer

Country Status (1)

Country Link
JP (1) JPS5610230A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5071388A (en) * 1973-06-15 1975-06-13
JPS5436778A (en) * 1977-08-26 1979-03-17 Horiba Ltd Photosound effect type analyzer
JPS5459188A (en) * 1977-10-19 1979-05-12 Nec Corp Infrared spectrophotometer apparatus of gas chromatography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5071388A (en) * 1973-06-15 1975-06-13
JPS5436778A (en) * 1977-08-26 1979-03-17 Horiba Ltd Photosound effect type analyzer
JPS5459188A (en) * 1977-10-19 1979-05-12 Nec Corp Infrared spectrophotometer apparatus of gas chromatography

Also Published As

Publication number Publication date
JPS6321130B2 (en) 1988-05-02

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