FR1241930A - Automatic diaphragm for cameras - Google Patents

Automatic diaphragm for cameras

Info

Publication number
FR1241930A
FR1241930A FR808955A FR808955A FR1241930A FR 1241930 A FR1241930 A FR 1241930A FR 808955 A FR808955 A FR 808955A FR 808955 A FR808955 A FR 808955A FR 1241930 A FR1241930 A FR 1241930A
Authority
FR
France
Prior art keywords
cameras
automatic diaphragm
diaphragm
automatic
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
FR808955A
Other languages
French (fr)
Inventor
Heinrich Hautmann
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.)
P Gossen and Co GmbH
Original Assignee
P Gossen and Co GmbH
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 P Gossen and Co GmbH filed Critical P Gossen and Co GmbH
Application granted granted Critical
Publication of FR1241930A publication Critical patent/FR1241930A/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)
FR808955A 1959-08-20 1959-10-30 Automatic diaphragm for cameras Expired FR1241930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1241930X 1959-08-20

Publications (1)

Publication Number Publication Date
FR1241930A true FR1241930A (en) 1960-09-23

Family

ID=7736103

Family Applications (1)

Application Number Title Priority Date Filing Date
FR808955A Expired FR1241930A (en) 1959-08-20 1959-10-30 Automatic diaphragm for cameras

Country Status (1)

Country Link
FR (1) FR1241930A (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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