GB1140566A - Improvements in or relating to control systems - Google Patents

Improvements in or relating to control systems

Info

Publication number
GB1140566A
GB1140566A GB37663/65A GB3766365A GB1140566A GB 1140566 A GB1140566 A GB 1140566A GB 37663/65 A GB37663/65 A GB 37663/65A GB 3766365 A GB3766365 A GB 3766365A GB 1140566 A GB1140566 A GB 1140566A
Authority
GB
United Kingdom
Prior art keywords
zoom
signal
potentiometer
driven
focus
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
GB37663/65A
Other languages
English (en)
Inventor
John Denzil Barr
Dexter Robert Plummer
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB37663/65A priority Critical patent/GB1140566A/en
Priority to DE19661522255 priority patent/DE1522255A1/de
Priority to NL6612492A priority patent/NL6612492A/xx
Priority to US608235A priority patent/US3548731A/en
Publication of GB1140566A publication Critical patent/GB1140566A/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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/02—Focusing arrangements of general interest for cameras, projectors or printers moving lens along baseboard
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1445—Control of position or direction using feedback using an analogue comparing device with a plurality of loops
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1472—Control of position or direction using feedback using an analogue comparing device with potentiometer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lens Barrels (AREA)
GB37663/65A 1965-09-03 1965-09-03 Improvements in or relating to control systems Expired GB1140566A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB37663/65A GB1140566A (en) 1965-09-03 1965-09-03 Improvements in or relating to control systems
DE19661522255 DE1522255A1 (de) 1965-09-03 1966-09-02 Servobetaetigte Zoomlinsenanordnung
NL6612492A NL6612492A (enExample) 1965-09-03 1966-09-05
US608235A US3548731A (en) 1965-09-03 1966-09-06 Control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37663/65A GB1140566A (en) 1965-09-03 1965-09-03 Improvements in or relating to control systems

Publications (1)

Publication Number Publication Date
GB1140566A true GB1140566A (en) 1969-01-22

Family

ID=10398087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37663/65A Expired GB1140566A (en) 1965-09-03 1965-09-03 Improvements in or relating to control systems

Country Status (4)

Country Link
US (1) US3548731A (enExample)
DE (1) DE1522255A1 (enExample)
GB (1) GB1140566A (enExample)
NL (1) NL6612492A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334003A1 (en) * 1988-03-18 1989-09-27 Hitachi, Ltd. Focusing apparatus for video camera or the like
GB2240854A (en) * 1990-02-08 1991-08-14 Asahi Optical Co Ltd Motor-driven zoom lens barrel
US5408332A (en) * 1988-03-18 1995-04-18 Hitachi, Ltd. Focusing apparatus for video camera or the like

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1328487A (en) * 1971-02-09 1973-08-30 Rank Organisation Ltd Camera lens control mechanism
US3798517A (en) * 1971-12-22 1974-03-19 Rank Organisation Ltd Camera lens control mechanism
US4161756A (en) * 1976-03-19 1979-07-17 Jos. Schneider & Co. Optische Werke Control system for varifocal objective
US9338363B1 (en) 2014-11-06 2016-05-10 General Electric Company Method and system for magnification correction from multiple focus planes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334003A1 (en) * 1988-03-18 1989-09-27 Hitachi, Ltd. Focusing apparatus for video camera or the like
US5408332A (en) * 1988-03-18 1995-04-18 Hitachi, Ltd. Focusing apparatus for video camera or the like
US5654757A (en) * 1988-03-18 1997-08-05 Hitachi, Ltd. Focusing apparatus for video camera or the like
GB2240854A (en) * 1990-02-08 1991-08-14 Asahi Optical Co Ltd Motor-driven zoom lens barrel
US5148199A (en) * 1990-02-08 1992-09-15 Asahi Kogaku Kogyo Kabushiki Kaisha Motor-driven zoom lens barrel

Also Published As

Publication number Publication date
US3548731A (en) 1970-12-22
NL6612492A (enExample) 1967-03-06
DE1522255A1 (de) 1969-12-04

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