FR2119394A5 - - Google Patents

Info

Publication number
FR2119394A5
FR2119394A5 FR7144377A FR7144377A FR2119394A5 FR 2119394 A5 FR2119394 A5 FR 2119394A5 FR 7144377 A FR7144377 A FR 7144377A FR 7144377 A FR7144377 A FR 7144377A FR 2119394 A5 FR2119394 A5 FR 2119394A5
Authority
FR
France
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
FR7144377A
Other languages
French (fr)
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Application granted granted Critical
Publication of FR2119394A5 publication Critical patent/FR2119394A5/fr
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
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • 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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Exposure Control For Cameras (AREA)
FR7144377A 1970-12-24 1971-12-10 Expired FR2119394A5 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2063704A DE2063704C3 (de) 1970-12-24 1970-12-24 Fotografische Kamera

Publications (1)

Publication Number Publication Date
FR2119394A5 true FR2119394A5 (enExample) 1972-08-04

Family

ID=5792106

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7144377A Expired FR2119394A5 (enExample) 1970-12-24 1971-12-10

Country Status (3)

Country Link
US (1) US3737240A (enExample)
DE (1) DE2063704C3 (enExample)
FR (1) FR2119394A5 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922096A (en) * 1971-09-11 1975-11-25 Asahi Optical Co Ltd Quantized indication arrangement
US3895876A (en) * 1972-09-07 1975-07-22 Asahi Optical Co Ltd Quantized indication apparatus
FR2454612A1 (fr) * 1979-04-18 1980-11-14 Jean Zinopoulos Indicateur de luminosite d'ambiance nocturne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH454605A (fr) * 1967-03-16 1968-04-15 Paillard Sa Photomètre électronique pour appareil de prise de vues
US3603799A (en) * 1968-04-01 1971-09-07 Asahi Optical Co Ltd Light measuring device comprising a plurality of binary circuits for providing a digital representation of photocell output
US3584962A (en) * 1969-10-17 1971-06-15 Westinghouse Electric Corp Digital light meter comprising plural light activated devices biased to become conducting at different illumination levels

Also Published As

Publication number Publication date
US3737240A (en) 1973-06-05
DE2063704A1 (de) 1972-07-13
DE2063704B2 (de) 1974-05-30
DE2063704C3 (de) 1974-12-19

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Legal Events

Date Code Title Description
ST Notification of lapse