FR1267225A - Improvements to automatic diaphragms - Google Patents

Improvements to automatic diaphragms

Info

Publication number
FR1267225A
FR1267225A FR829287A FR829287A FR1267225A FR 1267225 A FR1267225 A FR 1267225A FR 829287 A FR829287 A FR 829287A FR 829287 A FR829287 A FR 829287A FR 1267225 A FR1267225 A FR 1267225A
Authority
FR
France
Prior art keywords
diaphragms
automatic
automatic diaphragms
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
FR829287A
Other languages
French (fr)
Inventor
Marcel Beaulieu
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 filed Critical
Priority to FR829287A priority Critical patent/FR1267225A/en
Application granted granted Critical
Publication of FR1267225A publication Critical patent/FR1267225A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03B7/085—Analogue circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR829287A 1960-06-07 1960-06-07 Improvements to automatic diaphragms Expired FR1267225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR829287A FR1267225A (en) 1960-06-07 1960-06-07 Improvements to automatic diaphragms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR829287A FR1267225A (en) 1960-06-07 1960-06-07 Improvements to automatic diaphragms

Publications (1)

Publication Number Publication Date
FR1267225A true FR1267225A (en) 1961-07-21

Family

ID=8732913

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829287A Expired FR1267225A (en) 1960-06-07 1960-06-07 Improvements to automatic diaphragms

Country Status (1)

Country Link
FR (1) FR1267225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456570A (en) * 1965-12-28 1969-07-22 Bosch Elektronik Photokino Exposure control for photographic camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456570A (en) * 1965-12-28 1969-07-22 Bosch Elektronik Photokino Exposure control for photographic camera

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