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FR1364561A - Device for automatic control of the opening time of a photographic shutter - Google Patents

Device for automatic control of the opening time of a photographic shutter

Info

Publication number
FR1364561A
FR1364561A FR902949A FR902949A FR1364561A FR 1364561 A FR1364561 A FR 1364561A FR 902949 A FR902949 A FR 902949A FR 902949 A FR902949 A FR 902949A FR 1364561 A FR1364561 A FR 1364561A
Authority
FR
France
Prior art keywords
automatic control
opening time
photographic shutter
photographic
shutter
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
FR902949A
Other languages
French (fr)
Inventor
Pierre Marie Auguste Brun
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.)
Radiotechnique SA
Original Assignee
Radiotechnique SA
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 Radiotechnique SA filed Critical Radiotechnique SA
Priority to FR902949A priority Critical patent/FR1364561A/en
Application granted granted Critical
Publication of FR1364561A publication Critical patent/FR1364561A/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
    • G01J1/42—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)
FR902949A 1962-07-04 1962-07-04 Device for automatic control of the opening time of a photographic shutter Expired FR1364561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR902949A FR1364561A (en) 1962-07-04 1962-07-04 Device for automatic control of the opening time of a photographic shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR902949A FR1364561A (en) 1962-07-04 1962-07-04 Device for automatic control of the opening time of a photographic shutter

Publications (1)

Publication Number Publication Date
FR1364561A true FR1364561A (en) 1964-06-26

Family

ID=8782492

Family Applications (1)

Application Number Title Priority Date Filing Date
FR902949A Expired FR1364561A (en) 1962-07-04 1962-07-04 Device for automatic control of the opening time of a photographic shutter

Country Status (1)

Country Link
FR (1) FR1364561A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599546A (en) * 1969-08-27 1971-08-17 Eastman Kodak Co Exposure control with low light signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599546A (en) * 1969-08-27 1971-08-17 Eastman Kodak Co Exposure control with low light signal

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