JPS56162725A - Lens driver - Google Patents

Lens driver

Info

Publication number
JPS56162725A
JPS56162725A JP6688280A JP6688280A JPS56162725A JP S56162725 A JPS56162725 A JP S56162725A JP 6688280 A JP6688280 A JP 6688280A JP 6688280 A JP6688280 A JP 6688280A JP S56162725 A JPS56162725 A JP S56162725A
Authority
JP
Japan
Prior art keywords
crank arms
motor
ratchet gears
driving
revolution
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
JP6688280A
Other languages
Japanese (ja)
Other versions
JPH0241009B2 (en
Inventor
Masaru Yamamoto
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.)
Kyocera Corp
Yashica Co Ltd
Original Assignee
Kyocera Corp
Yashica Co 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 Kyocera Corp, Yashica Co Ltd filed Critical Kyocera Corp
Priority to JP6688280A priority Critical patent/JPH0241009B2/en
Publication of JPS56162725A publication Critical patent/JPS56162725A/en
Publication of JPH0241009B2 publication Critical patent/JPH0241009B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Lens Barrels (AREA)

Abstract

PURPOSE:To make the forward and backward driving of a lens possible only through unidirectional revolution of a motor by controlling lense driving for the purpose of focusing with an electromagnetic device. CONSTITUTION:A driving motor 1, transmission gear trains 3-6 transmitting the revolution in the 1st direction of the motor 1 and the 1st and 2nd crank arms 11, 12 driven by the gear trains are provided. Further, the device is constituted of the 1st, 2nd ratchet gears 14, 15 which are so integrally provided as to be revolved respectively in the 1st and 2nd directions by the pawls 11a, 12a provided respectively to the 1st and 2nd crank arms 11, 12, a bevel gear 21 which transmits the turning of the ratchet gears to a control ring 22, an electromagnetic device 16 which controls coupling of the 1st and 2nd crank arms 11, 12 to the 1st and 2nd ratchet gears 14, 15, and a signal circuit 24 which generates the focusing signal controlling this device 16.
JP6688280A 1980-05-20 1980-05-20 RENZUKUDOSOCHI Expired - Lifetime JPH0241009B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6688280A JPH0241009B2 (en) 1980-05-20 1980-05-20 RENZUKUDOSOCHI

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6688280A JPH0241009B2 (en) 1980-05-20 1980-05-20 RENZUKUDOSOCHI

Publications (2)

Publication Number Publication Date
JPS56162725A true JPS56162725A (en) 1981-12-14
JPH0241009B2 JPH0241009B2 (en) 1990-09-14

Family

ID=13328695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6688280A Expired - Lifetime JPH0241009B2 (en) 1980-05-20 1980-05-20 RENZUKUDOSOCHI

Country Status (1)

Country Link
JP (1) JPH0241009B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057256A (en) * 2006-08-31 2008-03-13 Tajima Roofing Co Ltd Assembly type roof structure and construction method used for the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057256A (en) * 2006-08-31 2008-03-13 Tajima Roofing Co Ltd Assembly type roof structure and construction method used for the same

Also Published As

Publication number Publication date
JPH0241009B2 (en) 1990-09-14

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