GB1507391A - Cameras - Google Patents

Cameras

Info

Publication number
GB1507391A
GB1507391A GB2381975A GB2381975A GB1507391A GB 1507391 A GB1507391 A GB 1507391A GB 2381975 A GB2381975 A GB 2381975A GB 2381975 A GB2381975 A GB 2381975A GB 1507391 A GB1507391 A GB 1507391A
Authority
GB
United Kingdom
Prior art keywords
cameras
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
GB2381975A
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
Priority claimed from JP49062131A external-priority patent/JPS5843724B2/en
Priority claimed from JP6886974A external-priority patent/JPS5738891B2/ja
Priority claimed from JP49100578A external-priority patent/JPS5127932A/en
Priority claimed from JP49103660A external-priority patent/JPS5751087B2/ja
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB1507391A publication Critical patent/GB1507391A/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
    • G03B7/091—Digital circuits
    • G03B7/097—Digital circuits for control of both exposure time and aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
GB2381975A 1974-05-31 1975-06-02 Cameras Expired GB1507391A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP49062131A JPS5843724B2 (en) 1974-05-31 1974-05-31 Electric shutter that uses an aperture to correct the intermediate value of the shutter time
JP6886974A JPS5738891B2 (en) 1974-06-17 1974-06-17
JP49100578A JPS5127932A (en) 1974-09-03 1974-09-03 Shatsutajikan no chukanchihoseioshiborinyotsuteokonau denkishatsuta
JP49103660A JPS5751087B2 (en) 1974-09-09 1974-09-09

Publications (1)

Publication Number Publication Date
GB1507391A true GB1507391A (en) 1978-04-12

Family

ID=27464127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2381975A Expired GB1507391A (en) 1974-05-31 1975-06-02 Cameras

Country Status (2)

Country Link
DE (1) DE2523871C3 (en)
GB (1) GB1507391A (en)

Also Published As

Publication number Publication date
DE2523871A1 (en) 1975-12-18
DE2523871B2 (en) 1978-05-11
DE2523871C3 (en) 1979-01-18

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee