JPS5657924A - Spectrophotometer - Google Patents

Spectrophotometer

Info

Publication number
JPS5657924A
JPS5657924A JP13298779A JP13298779A JPS5657924A JP S5657924 A JPS5657924 A JP S5657924A JP 13298779 A JP13298779 A JP 13298779A JP 13298779 A JP13298779 A JP 13298779A JP S5657924 A JPS5657924 A JP S5657924A
Authority
JP
Japan
Prior art keywords
amplifier
spectrophotometer
measurement
exceeds
fact
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
JP13298779A
Other languages
Japanese (ja)
Inventor
Kenichiro Takahashi
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 JP13298779A priority Critical patent/JPS5657924A/en
Publication of JPS5657924A publication Critical patent/JPS5657924A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To prevent the misoperation and the mistake of measurement for a spectrophotometer, by detecting and displaying the fact that the measurement signal of the spectrophotometer exceeds the dynamic range of an amplifier. CONSTITUTION:The beams sent from the light sources 1 and 2 and modulated with the frequencies f1 and f2 respectively are separated by the spectroscope 3. And these separated beams are converted into the electric signals through the photoelectric transducer 4 and amplified by the amplifier 5. If the input signal to the amplifier 5 exceeds the dynamic range of the amplifier 5, no component of the frequency f1 is contained in the output of the amplifier 5. This fact is detected and displayed to make the operator know that the data of measurement is an over scale.
JP13298779A 1979-10-17 1979-10-17 Spectrophotometer Pending JPS5657924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13298779A JPS5657924A (en) 1979-10-17 1979-10-17 Spectrophotometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13298779A JPS5657924A (en) 1979-10-17 1979-10-17 Spectrophotometer

Publications (1)

Publication Number Publication Date
JPS5657924A true JPS5657924A (en) 1981-05-20

Family

ID=15094123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13298779A Pending JPS5657924A (en) 1979-10-17 1979-10-17 Spectrophotometer

Country Status (1)

Country Link
JP (1) JPS5657924A (en)

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