FR1236859A - Diaphragm device for photographic or cinematographic cameras - Google Patents

Diaphragm device for photographic or cinematographic cameras

Info

Publication number
FR1236859A
FR1236859A FR806297A FR806297A FR1236859A FR 1236859 A FR1236859 A FR 1236859A FR 806297 A FR806297 A FR 806297A FR 806297 A FR806297 A FR 806297A FR 1236859 A FR1236859 A FR 1236859A
Authority
FR
France
Prior art keywords
photographic
diaphragm device
cinematographic cameras
cinematographic
cameras
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
FR806297A
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.)
Leica Aarau AG
Original Assignee
Kern and Co 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 Kern and Co AG filed Critical Kern and Co AG
Application granted granted Critical
Publication of FR1236859A publication Critical patent/FR1236859A/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)
FR806297A 1958-09-29 1959-09-29 Diaphragm device for photographic or cinematographic cameras Expired FR1236859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1236859X 1958-09-29

Publications (1)

Publication Number Publication Date
FR1236859A true FR1236859A (en) 1960-07-22

Family

ID=4564465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR806297A Expired FR1236859A (en) 1958-09-29 1959-09-29 Diaphragm device for photographic or cinematographic cameras

Country Status (1)

Country Link
FR (1) FR1236859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188931B (en) * 1957-06-22 1965-03-11 Agfa Ag Photoelectric device for the automatic control of a diaphragm arranged in the objective beam path of a photographic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188931B (en) * 1957-06-22 1965-03-11 Agfa Ag Photoelectric device for the automatic control of a diaphragm arranged in the objective beam path of a photographic device

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