GB8729556D0 - Improvements in/relating to camera aperture control systems - Google Patents

Improvements in/relating to camera aperture control systems

Info

Publication number
GB8729556D0
GB8729556D0 GB878729556A GB8729556A GB8729556D0 GB 8729556 D0 GB8729556 D0 GB 8729556D0 GB 878729556 A GB878729556 A GB 878729556A GB 8729556 A GB8729556 A GB 8729556A GB 8729556 D0 GB8729556 D0 GB 8729556D0
Authority
GB
United Kingdom
Prior art keywords
relating
control systems
aperture control
camera aperture
camera
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.)
Granted
Application number
GB878729556A
Other versions
GB2199667B (en
GB2199667A (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.)
HAKING W ETS Ltd
W Haking Enterprises Ltd
Original Assignee
HAKING W ETS Ltd
W Haking Enterprises 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 US06/926,610 external-priority patent/US4727389A/en
Application filed by HAKING W ETS Ltd, W Haking Enterprises Ltd filed Critical HAKING W ETS Ltd
Publication of GB8729556D0 publication Critical patent/GB8729556D0/en
Publication of GB2199667A publication Critical patent/GB2199667A/en
Application granted granted Critical
Publication of GB2199667B publication Critical patent/GB2199667B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Focusing (AREA)
GB8729556A 1986-11-12 1987-12-18 Improvements in or relating to camera aperture control systems Expired - Fee Related GB2199667B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/926,610 US4727389A (en) 1986-02-07 1986-11-12 Automatic focus and exposure controlled camera

Publications (3)

Publication Number Publication Date
GB8729556D0 true GB8729556D0 (en) 1988-02-03
GB2199667A GB2199667A (en) 1988-07-13
GB2199667B GB2199667B (en) 1990-05-09

Family

ID=25453445

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8627456A Expired - Fee Related GB2197725B (en) 1986-11-12 1986-11-17 Automatic focus and exposure controlled camera
GB8729556A Expired - Fee Related GB2199667B (en) 1986-11-12 1987-12-18 Improvements in or relating to camera aperture control systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8627456A Expired - Fee Related GB2197725B (en) 1986-11-12 1986-11-17 Automatic focus and exposure controlled camera

Country Status (1)

Country Link
GB (2) GB2197725B (en)

Also Published As

Publication number Publication date
GB2199667B (en) 1990-05-09
GB2199667A (en) 1988-07-13
GB8627456D0 (en) 1986-12-17
GB2197725B (en) 1990-05-09
GB2197725A (en) 1988-05-25

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Legal Events

Date Code Title Description
711B Application made for correction of error (sect. 117/77)
711E Case decided by the comptroller ** specification corrected (sect. 117/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971117