JPS5719718A - Driving circuit for camera - Google Patents

Driving circuit for camera

Info

Publication number
JPS5719718A
JPS5719718A JP9371380A JP9371380A JPS5719718A JP S5719718 A JPS5719718 A JP S5719718A JP 9371380 A JP9371380 A JP 9371380A JP 9371380 A JP9371380 A JP 9371380A JP S5719718 A JPS5719718 A JP S5719718A
Authority
JP
Japan
Prior art keywords
speed
zooming
motor
variable resistor
differentiating
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.)
Pending
Application number
JP9371380A
Other languages
English (en)
Inventor
Kenji Fujikawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9371380A priority Critical patent/JPS5719718A/ja
Priority to US06/279,946 priority patent/US4371241A/en
Priority to GB8120778A priority patent/GB2083250B/en
Priority to DE3126779A priority patent/DE3126779A1/de
Priority to FR8113538A priority patent/FR2486667A1/fr
Publication of JPS5719718A publication Critical patent/JPS5719718A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/282—Autofocusing of zoom lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
JP9371380A 1980-07-09 1980-07-09 Driving circuit for camera Pending JPS5719718A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP9371380A JPS5719718A (en) 1980-07-09 1980-07-09 Driving circuit for camera
US06/279,946 US4371241A (en) 1980-07-09 1981-07-02 Moving picture camera in which constant speed zooming is effected
GB8120778A GB2083250B (en) 1980-07-09 1981-07-06 Zooming speed control
DE3126779A DE3126779A1 (de) 1980-07-09 1981-07-07 "laufbildkamera mit konstantgeschwindigkeits-brennweitenverstellung"
FR8113538A FR2486667A1 (fr) 1980-07-09 1981-07-09 Camera de prise de vues, dans laquelle la variation de la distance focale de l'objectif s'effectue a vitesse constante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9371380A JPS5719718A (en) 1980-07-09 1980-07-09 Driving circuit for camera

Publications (1)

Publication Number Publication Date
JPS5719718A true JPS5719718A (en) 1982-02-02

Family

ID=14090056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9371380A Pending JPS5719718A (en) 1980-07-09 1980-07-09 Driving circuit for camera

Country Status (5)

Country Link
US (1) US4371241A (ja)
JP (1) JPS5719718A (ja)
DE (1) DE3126779A1 (ja)
FR (1) FR2486667A1 (ja)
GB (1) GB2083250B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63287586A (ja) * 1987-05-19 1988-11-24 Mamoru Wakimura 路床の固化補修方法
US10484787B2 (en) 2017-04-04 2019-11-19 Zorzo Co., Ltd. Loudspeaker apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809188C2 (de) * 1987-03-18 1997-09-18 Fuji Photo Film Co Ltd Bildanzeigevorrichtung mit mehreren Teilbildern, Verfahren und Vorrichtung zur Herstellung der Teilbilder
US5450156A (en) * 1991-05-21 1995-09-12 Asahi Kogaku Kogyo Kabushiki Kaisha Power zoom lens and camera having same
US5396306A (en) * 1991-05-21 1995-03-07 Asahi Kogaku Kogyo Kabushiki Kaisha Power lens and camera system
FR2676839B1 (fr) * 1991-05-21 1997-05-23 Asahi Optical Co Ltd Appareil photo comportant un objectif zoom motorise.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6400287A (ja) * 1963-01-18 1964-07-20
FR1374558A (fr) * 1963-09-11 1964-10-09 Evershed Vignoles Ltd Systèmes optiques perfectionnés
FR1384443A (fr) * 1964-03-03 1965-01-04 Schneider Co Optische Werke Objectif photographique ou cinématographique à focale variable
FR1387622A (fr) * 1964-03-25 1965-01-29 Rank Precision Ind Ltd Perfectionnements aux mécanismes de commande pour caméras de télévision et caméras de prises de vues cinématographiques
GB1170484A (en) * 1967-05-18 1969-11-12 Rank Organisation Ltd Improvements in Camera Systems
US3621136A (en) * 1969-09-10 1971-11-16 Us Navy Automatic optical-focusing system for tv cameras
JPS5647533B2 (ja) * 1973-12-14 1981-11-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63287586A (ja) * 1987-05-19 1988-11-24 Mamoru Wakimura 路床の固化補修方法
US10484787B2 (en) 2017-04-04 2019-11-19 Zorzo Co., Ltd. Loudspeaker apparatus

Also Published As

Publication number Publication date
DE3126779A1 (de) 1982-05-27
GB2083250B (en) 1984-08-30
US4371241A (en) 1983-02-01
FR2486667A1 (fr) 1982-01-15
GB2083250A (en) 1982-03-17

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