GB1470866A - Circuit arrangement for measuring quantities of light - Google Patents

Circuit arrangement for measuring quantities of light

Info

Publication number
GB1470866A
GB1470866A GB5311274A GB5311274A GB1470866A GB 1470866 A GB1470866 A GB 1470866A GB 5311274 A GB5311274 A GB 5311274A GB 5311274 A GB5311274 A GB 5311274A GB 1470866 A GB1470866 A GB 1470866A
Authority
GB
United Kingdom
Prior art keywords
detector
relay
bridge
light
photo
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
Application number
GB5311274A
Other languages
English (en)
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.)
Elektromat VEB
Original Assignee
Elektromat VEB
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 Elektromat VEB filed Critical Elektromat VEB
Publication of GB1470866A publication Critical patent/GB1470866A/en
Expired 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
    • G01J1/18—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors using comparison with a reference electric value
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB5311274A 1973-12-27 1974-12-09 Circuit arrangement for measuring quantities of light Expired GB1470866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD17563373A DD109744A1 (fi) 1973-12-27 1973-12-27

Publications (1)

Publication Number Publication Date
GB1470866A true GB1470866A (en) 1977-04-21

Family

ID=5494069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5311274A Expired GB1470866A (en) 1973-12-27 1974-12-09 Circuit arrangement for measuring quantities of light

Country Status (6)

Country Link
CS (1) CS183029B1 (fi)
DD (1) DD109744A1 (fi)
DE (1) DE2453951A1 (fi)
FR (1) FR2256400B3 (fi)
GB (1) GB1470866A (fi)
SU (1) SU567099A1 (fi)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136135A (en) * 1983-03-11 1984-09-12 Johnson Matthey Plc Calibration Warning Apparatus
EP2135044A4 (en) * 2007-03-16 2016-08-17 Risto Hedman DIAGNOSTICATION OF AN ELECTRONIC SENSOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136135A (en) * 1983-03-11 1984-09-12 Johnson Matthey Plc Calibration Warning Apparatus
EP2135044A4 (en) * 2007-03-16 2016-08-17 Risto Hedman DIAGNOSTICATION OF AN ELECTRONIC SENSOR

Also Published As

Publication number Publication date
FR2256400B3 (fi) 1977-09-23
FR2256400A1 (fi) 1975-07-25
SU567099A1 (ru) 1977-07-30
DD109744A1 (fi) 1974-11-12
DE2453951A1 (de) 1975-07-10
CS183029B1 (en) 1978-05-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee