JPS5724922A - Zoomlens barrel - Google Patents

Zoomlens barrel

Info

Publication number
JPS5724922A
JPS5724922A JP9943480A JP9943480A JPS5724922A JP S5724922 A JPS5724922 A JP S5724922A JP 9943480 A JP9943480 A JP 9943480A JP 9943480 A JP9943480 A JP 9943480A JP S5724922 A JPS5724922 A JP S5724922A
Authority
JP
Japan
Prior art keywords
cam
pin
groove
zoomlens
point
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
JP9943480A
Other languages
Japanese (ja)
Other versions
JPS639201B2 (en
Inventor
Shosuke Fukushima
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP9943480A priority Critical patent/JPS5724922A/en
Publication of JPS5724922A publication Critical patent/JPS5724922A/en
Publication of JPS639201B2 publication Critical patent/JPS639201B2/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
    • G02B7/02—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

PURPOSE:To obtain a small barrel without deteriorating accuracy by crossing cam grooves provided on a cam cylinder is a zoomlens. CONSTITUTION:In a zoomlens that moves two groups of lenses in the optical axis direction with rotation of a cam cylinder 21, a cam groove 21 on which pins 31, 61b that guide each group of lenses slide are made to cross at a point A. When the cam cylinder 21 is rotated in the right direction, a pin 61b passes through a point A after the pin 31 passes through the point A. Further the cam groove 21a is a straight through groove, and the cam groove 21b has been a shallow groove, further the pin 61b has been formed in a slightly larger size than a crossing area, so it is constituted such that the pin does not move from the crossing region to other grooves. With such constitution, it is possible to make a barrel small and to make the best use of a zoom lens optical system designed to be compact.
JP9943480A 1980-07-22 1980-07-22 Zoomlens barrel Granted JPS5724922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9943480A JPS5724922A (en) 1980-07-22 1980-07-22 Zoomlens barrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9943480A JPS5724922A (en) 1980-07-22 1980-07-22 Zoomlens barrel

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP22294887A Division JPS6371817A (en) 1987-09-08 1987-09-08 Zoom lens mirror barrel

Publications (2)

Publication Number Publication Date
JPS5724922A true JPS5724922A (en) 1982-02-09
JPS639201B2 JPS639201B2 (en) 1988-02-26

Family

ID=14247320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9943480A Granted JPS5724922A (en) 1980-07-22 1980-07-22 Zoomlens barrel

Country Status (1)

Country Link
JP (1) JPS5724922A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159207U (en) * 1981-03-31 1982-10-06
JPS60190010U (en) * 1984-05-28 1985-12-16 三菱電機株式会社 coil device
JPS63210808A (en) * 1987-02-27 1988-09-01 Asahi Optical Co Ltd Motion transmitting member for lens driving system
JP2010032727A (en) * 2008-07-28 2010-02-12 Canon Inc Lens device and optical apparatus
JP2014041317A (en) * 2012-07-23 2014-03-06 Nikon Corp Lens barrel and imaging device
JP2019053145A (en) * 2017-09-14 2019-04-04 株式会社シグマ Cam follower and lens barrel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950166A (en) * 1931-09-14 1934-03-06 Otto B Durholz Variable focus lens unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950166A (en) * 1931-09-14 1934-03-06 Otto B Durholz Variable focus lens unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159207U (en) * 1981-03-31 1982-10-06
JPS60190010U (en) * 1984-05-28 1985-12-16 三菱電機株式会社 coil device
JPH0438494Y2 (en) * 1984-05-28 1992-09-09
JPS63210808A (en) * 1987-02-27 1988-09-01 Asahi Optical Co Ltd Motion transmitting member for lens driving system
JP2010032727A (en) * 2008-07-28 2010-02-12 Canon Inc Lens device and optical apparatus
JP2014041317A (en) * 2012-07-23 2014-03-06 Nikon Corp Lens barrel and imaging device
JP2019053145A (en) * 2017-09-14 2019-04-04 株式会社シグマ Cam follower and lens barrel

Also Published As

Publication number Publication date
JPS639201B2 (en) 1988-02-26

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