GB1268246A - Photographic camera having an electromagnetic exposure control - Google Patents

Photographic camera having an electromagnetic exposure control

Info

Publication number
GB1268246A
GB1268246A GB31718/69A GB3171869A GB1268246A GB 1268246 A GB1268246 A GB 1268246A GB 31718/69 A GB31718/69 A GB 31718/69A GB 3171869 A GB3171869 A GB 3171869A GB 1268246 A GB1268246 A GB 1268246A
Authority
GB
United Kingdom
Prior art keywords
resistor
capacitor
exposure control
current
june
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
GB31718/69A
Other languages
English (en)
Inventor
Wolfgang Ort
Clemens Hopfner
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1268246A publication Critical patent/GB1268246A/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)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
GB31718/69A 1968-06-25 1969-06-24 Photographic camera having an electromagnetic exposure control Expired GB1268246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1772718 1968-06-25

Publications (1)

Publication Number Publication Date
GB1268246A true GB1268246A (en) 1972-03-22

Family

ID=5701366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31718/69A Expired GB1268246A (en) 1968-06-25 1969-06-24 Photographic camera having an electromagnetic exposure control

Country Status (3)

Country Link
US (1) US3605588A (enExample)
FR (1) FR2011619A1 (enExample)
GB (1) GB1268246A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750543A (en) * 1971-04-19 1973-08-07 Polaroid Corp Focus responsive exposure control system
JPS571813B1 (enExample) * 1971-05-31 1982-01-13
US3791278A (en) * 1971-07-19 1974-02-12 Polaroid Corp Photographic apparatus with solenoid powered instrumentalities
JPS5632128A (en) * 1979-08-22 1981-04-01 Olympus Optical Co Ltd Aperture control circuit of strobe synchronized camera

Also Published As

Publication number Publication date
FR2011619A1 (enExample) 1970-03-06
US3605588A (en) 1971-09-20

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