GB1336456A - Electric shutter control network for a camera - Google Patents

Electric shutter control network for a camera

Info

Publication number
GB1336456A
GB1336456A GB2603171A GB2603171A GB1336456A GB 1336456 A GB1336456 A GB 1336456A GB 2603171 A GB2603171 A GB 2603171A GB 2603171 A GB2603171 A GB 2603171A GB 1336456 A GB1336456 A GB 1336456A
Authority
GB
United Kingdom
Prior art keywords
shutter control
emitter follower
control network
circuit
follower circuit
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
GB2603171A
Other languages
English (en)
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB1336456A publication Critical patent/GB1336456A/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
    • G03B7/083—Analogue circuits for control of exposure time
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
GB2603171A 1970-05-21 1971-04-19 Electric shutter control network for a camera Expired GB1336456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4966970U JPS4821854Y1 (enExample) 1970-05-21 1970-05-21

Publications (1)

Publication Number Publication Date
GB1336456A true GB1336456A (en) 1973-11-07

Family

ID=12837562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2603171A Expired GB1336456A (en) 1970-05-21 1971-04-19 Electric shutter control network for a camera

Country Status (3)

Country Link
JP (1) JPS4821854Y1 (enExample)
FR (1) FR2091626A5 (enExample)
GB (1) GB1336456A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1376080A (en) * 1971-02-27 1974-12-04 Asahi Optical Co Ltd Exposure-determing device for a camera

Also Published As

Publication number Publication date
DE2125312B2 (de) 1973-01-18
FR2091626A5 (enExample) 1972-01-14
JPS4821854Y1 (enExample) 1973-06-26
DE2125312A1 (de) 1971-12-02

Similar Documents

Publication Publication Date Title
GB1339622A (en) Electric shutter control circuit for a single-lens reflex camera
GB1062578A (en) Photographic camera
GB1481214A (en) Photographic camera
GB1199056A (en) Interchangeable Objectives for a Reflex Camera
GB1161744A (en) Improvements relating to photometers for use in photographic cameras
GB1336456A (en) Electric shutter control network for a camera
GB1260401A (en) An apparatus for determining a time-integrated quantity of light
GB1060248A (en) Improvements relating to photographic camera shutter mechanisms
GB1056120A (en) Automatic diaphram-setting device
GB1525360A (en) Digital display system for a photographic exposure meter
GB1311323A (en) Cameras
GB856110A (en) Improvements in or relating to photographic and cinematographic cameras
GB1520088A (en) Camera
GB1034395A (en) A cinematographic camera and a film-sensitivity control device therefor
GB1423389A (en) Light metering circu'it
GB1385075A (en) Exposure time computation circuit for cameras
GB944925A (en) Improvements in or relating to photographic cameras
GB1014283A (en) Automatic exposure control apparatus
GB1029923A (en) Cameras
GB1487099A (en) Electric exposure time computation circuit for a camera
GB1334808A (en) Electric control network for a camera
GB1465846A (en) Electronic shutter with memory function
GB938175A (en) Improvements in or relating to photographic cameras
GB1286927A (en) Electric shutter control network for a camera
GB1110593A (en) Photoelectric device

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee