GB1286927A - Electric shutter control network for a camera - Google Patents

Electric shutter control network for a camera

Info

Publication number
GB1286927A
GB1286927A GB25959/71A GB2595971A GB1286927A GB 1286927 A GB1286927 A GB 1286927A GB 25959/71 A GB25959/71 A GB 25959/71A GB 2595971 A GB2595971 A GB 2595971A GB 1286927 A GB1286927 A GB 1286927A
Authority
GB
United Kingdom
Prior art keywords
circuit
shutter control
camera
electric shutter
emitter follower
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
GB25959/71A
Other languages
English (en)
Inventor
Chiharu Mori
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 GB1286927A publication Critical patent/GB1286927A/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
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/003—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly setting of both shutter and diaphragm
    • 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)
GB25959/71A 1970-05-11 1971-04-19 Electric shutter control network for a camera Expired GB1286927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970045719U JPS497575Y1 (enExample) 1970-05-11 1970-05-11

Publications (1)

Publication Number Publication Date
GB1286927A true GB1286927A (en) 1972-08-31

Family

ID=12727142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25959/71A Expired GB1286927A (en) 1970-05-11 1971-04-19 Electric shutter control network for a camera

Country Status (3)

Country Link
JP (1) JPS497575Y1 (enExample)
FR (1) FR2091393A5 (enExample)
GB (1) GB1286927A (enExample)

Also Published As

Publication number Publication date
DE2123299B2 (de) 1973-01-18
JPS497575Y1 (enExample) 1974-02-22
DE2123299A1 (de) 1971-11-25
FR2091393A5 (enExample) 1972-01-14

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years