JPH0371647B2 - - Google Patents

Info

Publication number
JPH0371647B2
JPH0371647B2 JP58007309A JP730983A JPH0371647B2 JP H0371647 B2 JPH0371647 B2 JP H0371647B2 JP 58007309 A JP58007309 A JP 58007309A JP 730983 A JP730983 A JP 730983A JP H0371647 B2 JPH0371647 B2 JP H0371647B2
Authority
JP
Japan
Prior art keywords
sample
sensitivity
light source
output
photoelectric
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.)
Expired - Lifetime
Application number
JP58007309A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59133440A (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 JP730983A priority Critical patent/JPS59133440A/ja
Publication of JPS59133440A publication Critical patent/JPS59133440A/ja
Publication of JPH0371647B2 publication Critical patent/JPH0371647B2/ja
Granted 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
    • G01J1/1626—Arrangements with two photodetectors, the signals of which are compared

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Spectrometry And Color Measurement (AREA)
JP730983A 1983-01-21 1983-01-21 光度計における光電変換器の出力制御装置 Granted JPS59133440A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP730983A JPS59133440A (ja) 1983-01-21 1983-01-21 光度計における光電変換器の出力制御装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP730983A JPS59133440A (ja) 1983-01-21 1983-01-21 光度計における光電変換器の出力制御装置

Publications (2)

Publication Number Publication Date
JPS59133440A JPS59133440A (ja) 1984-07-31
JPH0371647B2 true JPH0371647B2 (enrdf_load_stackoverflow) 1991-11-14

Family

ID=11662399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP730983A Granted JPS59133440A (ja) 1983-01-21 1983-01-21 光度計における光電変換器の出力制御装置

Country Status (1)

Country Link
JP (1) JPS59133440A (enrdf_load_stackoverflow)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341599B2 (enrdf_load_stackoverflow) * 1972-05-20 1978-11-04
JPS5925448B2 (ja) * 1977-09-12 1984-06-18 株式会社東芝 光強度測定器
JPS5485785A (en) * 1977-12-21 1979-07-07 Hitachi Ltd Automatic correcting circuit of sensitivities of photo detectors

Also Published As

Publication number Publication date
JPS59133440A (ja) 1984-07-31

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