FR763279A - Device for the automatic adjustment of the diaphragm of cinematographic cameras according to the degree of lighting of the scene - Google Patents

Device for the automatic adjustment of the diaphragm of cinematographic cameras according to the degree of lighting of the scene

Info

Publication number
FR763279A
FR763279A FR763279DA FR763279A FR 763279 A FR763279 A FR 763279A FR 763279D A FR763279D A FR 763279DA FR 763279 A FR763279 A FR 763279A
Authority
FR
France
Prior art keywords
scene
diaphragm
lighting
degree
automatic adjustment
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
Von Mihaly
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 FR763279A publication Critical patent/FR763279A/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)
FR763279D 1932-11-02 1933-11-02 Device for the automatic adjustment of the diaphragm of cinematographic cameras according to the degree of lighting of the scene Expired FR763279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE763279X 1932-11-02

Publications (1)

Publication Number Publication Date
FR763279A true FR763279A (en) 1934-04-26

Family

ID=6670400

Family Applications (1)

Application Number Title Priority Date Filing Date
FR763279D Expired FR763279A (en) 1932-11-02 1933-11-02 Device for the automatic adjustment of the diaphragm of cinematographic cameras according to the degree of lighting of the scene

Country Status (1)

Country Link
FR (1) FR763279A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421476A (en) * 1943-06-18 1947-06-03 Rca Corp Photoelectric control apparatus for diaphragms
US2423321A (en) * 1944-07-29 1947-07-01 Jr Samuel C Hurley Photoelectrically controlled light polarizing element
US2423322A (en) * 1944-08-10 1947-07-01 Jr Samuel C Hurley Vehicular light control device having polarizing elements
US2453693A (en) * 1946-09-03 1948-11-16 Charles W Armstrong Automatic diaphragm control
US2655086A (en) * 1951-04-13 1953-10-13 Neville E Walker Autoamtic camera light aperture control
US3002435A (en) * 1956-08-23 1961-10-03 Revere Camera Co Camera having automatically controlled lens stop
DE1159264B (en) * 1959-04-30 1963-12-12 Leitz Ernst Gmbh Photographic camera with automatic exposure control

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421476A (en) * 1943-06-18 1947-06-03 Rca Corp Photoelectric control apparatus for diaphragms
US2423321A (en) * 1944-07-29 1947-07-01 Jr Samuel C Hurley Photoelectrically controlled light polarizing element
US2423322A (en) * 1944-08-10 1947-07-01 Jr Samuel C Hurley Vehicular light control device having polarizing elements
US2453693A (en) * 1946-09-03 1948-11-16 Charles W Armstrong Automatic diaphragm control
US2655086A (en) * 1951-04-13 1953-10-13 Neville E Walker Autoamtic camera light aperture control
US3002435A (en) * 1956-08-23 1961-10-03 Revere Camera Co Camera having automatically controlled lens stop
DE1159264B (en) * 1959-04-30 1963-12-12 Leitz Ernst Gmbh Photographic camera with automatic exposure control

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