JPS6433510A - Lens barrel of zoom lens - Google Patents

Lens barrel of zoom lens

Info

Publication number
JPS6433510A
JPS6433510A JP18884387A JP18884387A JPS6433510A JP S6433510 A JPS6433510 A JP S6433510A JP 18884387 A JP18884387 A JP 18884387A JP 18884387 A JP18884387 A JP 18884387A JP S6433510 A JPS6433510 A JP S6433510A
Authority
JP
Japan
Prior art keywords
cam
cam groove
groups
iii
group
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
JP18884387A
Other languages
Japanese (ja)
Other versions
JP2543713B2 (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 JP62188843A priority Critical patent/JP2543713B2/en
Publication of JPS6433510A publication Critical patent/JPS6433510A/en
Application granted granted Critical
Publication of JP2543713B2 publication Critical patent/JP2543713B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the number of cam grooves and to reduce the-entire length of a cam cylinder, by fitting the cam followers of at least two movable lens groups with different travel quantities among plural movable lens groups in the same cam groove, and applying different travel control on them, respectively. CONSTITUTION:By giving turning on the cam cylinder centering an optical axis, prescribed travel quantities are given on a group I by the cam groove 1a for group I, and on the groups II and III by the cam groove 1b for the groups II and III, then, zooming are performed. At this time, the cam followers 3 and 4 for the groups II and III are fitted in the same cam groove 1b, and also, their holding frames are pressed with each other in the direction of the optical axis, therefore, the travel control are applied on the group II by the end face on the object side of the cam groove 1b, and on the group III by the end face on the image side. In such a way, it is possible to share the cam groove for plural lens groups, and to facilitate the layout of the cam groove, and also, to lower a cost by reducing the number of cam grooves resulting in the compactness of the cam cylinder.
JP62188843A 1987-07-30 1987-07-30 Variable focal length lens barrel Expired - Fee Related JP2543713B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62188843A JP2543713B2 (en) 1987-07-30 1987-07-30 Variable focal length lens barrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188843A JP2543713B2 (en) 1987-07-30 1987-07-30 Variable focal length lens barrel

Publications (2)

Publication Number Publication Date
JPS6433510A true JPS6433510A (en) 1989-02-03
JP2543713B2 JP2543713B2 (en) 1996-10-16

Family

ID=16230811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188843A Expired - Fee Related JP2543713B2 (en) 1987-07-30 1987-07-30 Variable focal length lens barrel

Country Status (1)

Country Link
JP (1) JP2543713B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05241058A (en) * 1992-02-28 1993-09-21 Canon Inc Lens frame moving mechanism for camera
JP2011008046A (en) * 2009-06-26 2011-01-13 Hoya Corp Linear guide mechanism of lens barrel
WO2017134938A1 (en) * 2016-02-02 2017-08-10 ソニー株式会社 Optical element drive device, interchangeable lens, and image pickup device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810707A (en) * 1981-07-13 1983-01-21 Olympus Optical Co Ltd Lens barrel having moving mechanism for lens group
JPS6098805U (en) * 1984-09-27 1985-07-05 キヤノン株式会社 Zoom lens cam mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810707A (en) * 1981-07-13 1983-01-21 Olympus Optical Co Ltd Lens barrel having moving mechanism for lens group
JPS6098805U (en) * 1984-09-27 1985-07-05 キヤノン株式会社 Zoom lens cam mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05241058A (en) * 1992-02-28 1993-09-21 Canon Inc Lens frame moving mechanism for camera
JP2011008046A (en) * 2009-06-26 2011-01-13 Hoya Corp Linear guide mechanism of lens barrel
WO2017134938A1 (en) * 2016-02-02 2017-08-10 ソニー株式会社 Optical element drive device, interchangeable lens, and image pickup device
JPWO2017134938A1 (en) * 2016-02-02 2018-11-29 ソニー株式会社 Optical element driving device, interchangeable lens, and imaging device

Also Published As

Publication number Publication date
JP2543713B2 (en) 1996-10-16

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