FR861937A - Diaphragm for camera - Google Patents

Diaphragm for camera

Info

Publication number
FR861937A
FR861937A FR861937DA FR861937A FR 861937 A FR861937 A FR 861937A FR 861937D A FR861937D A FR 861937DA FR 861937 A FR861937 A FR 861937A
Authority
FR
France
Prior art keywords
diaphragm
camera
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
Other languages
French (fr)
Inventor
Henriksen
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
Application granted granted Critical
Publication of FR861937A publication Critical patent/FR861937A/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)
FR861937D 1938-12-08 1939-11-28 Diaphragm for camera Expired FR861937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US861937XA 1938-12-08 1938-12-08

Publications (1)

Publication Number Publication Date
FR861937A true FR861937A (en) 1941-02-21

Family

ID=22196911

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861937D Expired FR861937A (en) 1938-12-08 1939-11-28 Diaphragm for camera

Country Status (1)

Country Link
FR (1) FR861937A (en)

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