JPS6480829A - Light power measuring instrument - Google Patents

Light power measuring instrument

Info

Publication number
JPS6480829A
JPS6480829A JP23938487A JP23938487A JPS6480829A JP S6480829 A JPS6480829 A JP S6480829A JP 23938487 A JP23938487 A JP 23938487A JP 23938487 A JP23938487 A JP 23938487A JP S6480829 A JPS6480829 A JP S6480829A
Authority
JP
Japan
Prior art keywords
light beam
photoelectric converting
wavelength
converting element
intensity
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
JP23938487A
Other languages
Japanese (ja)
Inventor
Toshitsugu Ueda
Masahiro Watari
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
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 Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP23938487A priority Critical patent/JPS6480829A/en
Publication of JPS6480829A publication Critical patent/JPS6480829A/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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
    • 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
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To enable a high-accuracy measurement by measuring wavelength and correcting the sensitivity of a quantum type photoelectric converting element automatically according to the measured wavelength. CONSTITUTION:Unpolarized object light of power measurement applied to a beam splitter 6 is split into a 1st light beam and a 2nd light beam having linear polarized components. The 1st light beam is applied to a 1st photoelectric converting element 9 through a Faraday element 7 and a polarizing plate 8, and the 2nd light beam is applied to a 2nd photoelectric converting element 11. A controller 10 adjusts the intensity of a magnetic field applied to the Faraday element 7 so that the output signal of the 1st photoelectric converting element 9 is maximum. The wavelength of the light beam is found from the intensity of the magnetic field applied to the Faraday element 7. An arithmetic processor 13 corrects the spectral sensitivity characteristics to the output signal of an adder 12 based on wavelength data applied from the controller 10, automatically.
JP23938487A 1987-09-24 1987-09-24 Light power measuring instrument Pending JPS6480829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23938487A JPS6480829A (en) 1987-09-24 1987-09-24 Light power measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23938487A JPS6480829A (en) 1987-09-24 1987-09-24 Light power measuring instrument

Publications (1)

Publication Number Publication Date
JPS6480829A true JPS6480829A (en) 1989-03-27

Family

ID=17043983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23938487A Pending JPS6480829A (en) 1987-09-24 1987-09-24 Light power measuring instrument

Country Status (1)

Country Link
JP (1) JPS6480829A (en)

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