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JPS543582A - Double modulating photometric device - Google Patents

Double modulating photometric device

Info

Publication number
JPS543582A
JPS543582A JP6905477A JP6905477A JPS543582A JP S543582 A JPS543582 A JP S543582A JP 6905477 A JP6905477 A JP 6905477A JP 6905477 A JP6905477 A JP 6905477A JP S543582 A JPS543582 A JP S543582A
Authority
JP
Japan
Prior art keywords
photometric device
modulating
double
double modulating
pulse
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
JP6905477A
Other languages
Japanese (ja)
Inventor
Taro Nogami
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 JP6905477A priority Critical patent/JPS543582A/en
Publication of JPS543582A publication Critical patent/JPS543582A/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
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/34—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker
    • G01J1/36—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To enable highly accurate light measurement to be performed by detecting the phase of one modulating light and converting this to a pulse signal thereby pulse-driving other modulating mechanism.
JP6905477A 1977-06-10 1977-06-10 Double modulating photometric device Pending JPS543582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6905477A JPS543582A (en) 1977-06-10 1977-06-10 Double modulating photometric device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6905477A JPS543582A (en) 1977-06-10 1977-06-10 Double modulating photometric device

Publications (1)

Publication Number Publication Date
JPS543582A true JPS543582A (en) 1979-01-11

Family

ID=13391460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6905477A Pending JPS543582A (en) 1977-06-10 1977-06-10 Double modulating photometric device

Country Status (1)

Country Link
JP (1) JPS543582A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62216196A (en) * 1986-07-26 1987-09-22 東芝ライテック株式会社 Discharge lamp burner
EP0452886A2 (en) 1990-04-17 1991-10-23 Fuji Photo Film Co., Ltd. Method of processing a silver halide color photographic material
EP0720049A2 (en) 1990-05-09 1996-07-03 Fuji Photo Film Co., Ltd. Photographic processing composition and processing method using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62216196A (en) * 1986-07-26 1987-09-22 東芝ライテック株式会社 Discharge lamp burner
EP0452886A2 (en) 1990-04-17 1991-10-23 Fuji Photo Film Co., Ltd. Method of processing a silver halide color photographic material
EP0720049A2 (en) 1990-05-09 1996-07-03 Fuji Photo Film Co., Ltd. Photographic processing composition and processing method using the same

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