JPS5720710A - Automatic focusing mechanism - Google Patents

Automatic focusing mechanism

Info

Publication number
JPS5720710A
JPS5720710A JP9591680A JP9591680A JPS5720710A JP S5720710 A JPS5720710 A JP S5720710A JP 9591680 A JP9591680 A JP 9591680A JP 9591680 A JP9591680 A JP 9591680A JP S5720710 A JPS5720710 A JP S5720710A
Authority
JP
Japan
Prior art keywords
photographing lens
automatic focusing
focusing mechanism
periphery
high reliability
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
JP9591680A
Other languages
Japanese (ja)
Inventor
Jiro Ito
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP9591680A priority Critical patent/JPS5720710A/en
Publication of JPS5720710A publication Critical patent/JPS5720710A/en
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
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To obtain miniaturized compact automatic focusing mechanism with high reliability by turning a photographing lens through a linear step motor whose moving element turns along the periphery of the photographing lens. CONSTITUTION:The moving element 2 of a linear step motor supported by a steel ball 5 turns along the periphery of a mirror body 8 of a photographing lens by energizing a coil winding 3 selectively and the mirror barrel 8 turns through a holding member interlocked with a pin 6 to deliver the photographing lens through a helicoid 10. Thus, the miniaturized compact automatic focus adjusting mechanism with high reliability can be obtained.
JP9591680A 1980-07-14 1980-07-14 Automatic focusing mechanism Pending JPS5720710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9591680A JPS5720710A (en) 1980-07-14 1980-07-14 Automatic focusing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9591680A JPS5720710A (en) 1980-07-14 1980-07-14 Automatic focusing mechanism

Publications (1)

Publication Number Publication Date
JPS5720710A true JPS5720710A (en) 1982-02-03

Family

ID=14150596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9591680A Pending JPS5720710A (en) 1980-07-14 1980-07-14 Automatic focusing mechanism

Country Status (1)

Country Link
JP (1) JPS5720710A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210407A (en) * 1983-05-14 1984-11-29 Asahi Optical Co Ltd Automatic focus detector of camera
US4749269A (en) * 1985-08-05 1988-06-07 Canon Kabushiki Kaisha Lens drive device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210407A (en) * 1983-05-14 1984-11-29 Asahi Optical Co Ltd Automatic focus detector of camera
US4749269A (en) * 1985-08-05 1988-06-07 Canon Kabushiki Kaisha Lens drive device

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