JPS5461525A - Variable focus lens unit and camera - Google Patents

Variable focus lens unit and camera

Info

Publication number
JPS5461525A
JPS5461525A JP12142078A JP12142078A JPS5461525A JP S5461525 A JPS5461525 A JP S5461525A JP 12142078 A JP12142078 A JP 12142078A JP 12142078 A JP12142078 A JP 12142078A JP S5461525 A JPS5461525 A JP S5461525A
Authority
JP
Japan
Prior art keywords
camera
lens unit
focus lens
variable focus
variable
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
JP12142078A
Other languages
Japanese (ja)
Other versions
JPS5751084B2 (en
Inventor
Chiesutaa Osutorousukii Jiyon
Debitsudo Sutaraa Nooman
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Publication of JPS5461525A publication Critical patent/JPS5461525A/en
Publication of JPS5751084B2 publication Critical patent/JPS5751084B2/ja
Granted 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
    • G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Lens Barrels (AREA)
  • Shutters For Cameras (AREA)
JP12142078A 1977-10-03 1978-10-02 Variable focus lens unit and camera Granted JPS5461525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83858177A 1977-10-03 1977-10-03

Publications (2)

Publication Number Publication Date
JPS5461525A true JPS5461525A (en) 1979-05-17
JPS5751084B2 JPS5751084B2 (en) 1982-10-30

Family

ID=25277484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12142078A Granted JPS5461525A (en) 1977-10-03 1978-10-02 Variable focus lens unit and camera

Country Status (6)

Country Link
JP (1) JPS5461525A (en)
CA (1) CA1122454A (en)
DE (1) DE2842851B2 (en)
FR (1) FR2404868A1 (en)
GB (1) GB2005852B (en)
IE (1) IE47956B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573025A (en) * 1978-11-25 1980-06-02 Minolta Camera Co Ltd Changeover device of automatic-manual focus controllable lens-barrel
JPS5573026A (en) * 1978-11-25 1980-06-02 Minolta Camera Co Ltd Automatic-manual focus controllable lens-barrel
JPS5619033A (en) * 1979-07-25 1981-02-23 Canon Inc Automatic focus control unit
JPS5648620A (en) * 1979-09-28 1981-05-01 Nippon Seimitsu Kogyo Kk Automatic focus controlling mechanism of camera
JPS62201738U (en) * 1986-06-13 1987-12-23

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH400602A (en) * 1961-07-29 1965-10-15 Agfa Ag Lens with variable focal length, with a device for optional focal length adjustment by hand and by a motor
US3522764A (en) * 1968-03-25 1970-08-04 Polaroid Corp Rangefinding and focusing system for photographic cameras and the like

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573025A (en) * 1978-11-25 1980-06-02 Minolta Camera Co Ltd Changeover device of automatic-manual focus controllable lens-barrel
JPS5573026A (en) * 1978-11-25 1980-06-02 Minolta Camera Co Ltd Automatic-manual focus controllable lens-barrel
JPS6236209B2 (en) * 1978-11-25 1987-08-06 Minolta Camera Kk
JPS5619033A (en) * 1979-07-25 1981-02-23 Canon Inc Automatic focus control unit
JPS638446B2 (en) * 1979-07-25 1988-02-23 Canon Kk
JPS5648620A (en) * 1979-09-28 1981-05-01 Nippon Seimitsu Kogyo Kk Automatic focus controlling mechanism of camera
JPS62201738U (en) * 1986-06-13 1987-12-23

Also Published As

Publication number Publication date
DE2842851B2 (en) 1979-10-31
FR2404868A1 (en) 1979-04-27
FR2404868B1 (en) 1984-08-10
IE781972L (en) 1979-04-03
DE2842851A1 (en) 1979-04-05
GB2005852A (en) 1979-04-25
IE47956B1 (en) 1984-08-08
CA1122454A (en) 1982-04-27
DE2842851C3 (en) 1980-07-17
JPS5751084B2 (en) 1982-10-30
GB2005852B (en) 1982-03-17

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