JPH0752256B2 - 小型ズ−ムレンズ - Google Patents

小型ズ−ムレンズ

Info

Publication number
JPH0752256B2
JPH0752256B2 JP60062968A JP6296885A JPH0752256B2 JP H0752256 B2 JPH0752256 B2 JP H0752256B2 JP 60062968 A JP60062968 A JP 60062968A JP 6296885 A JP6296885 A JP 6296885A JP H0752256 B2 JPH0752256 B2 JP H0752256B2
Authority
JP
Japan
Prior art keywords
lens
group
focal length
object side
positive
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.)
Expired - Fee Related
Application number
JP60062968A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61221719A (ja
Inventor
厳達 藤陵
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP60062968A priority Critical patent/JPH0752256B2/ja
Priority to US06/843,684 priority patent/US4733952A/en
Priority to DE19863610472 priority patent/DE3610472A1/de
Publication of JPS61221719A publication Critical patent/JPS61221719A/ja
Publication of JPH0752256B2 publication Critical patent/JPH0752256B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1435—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative
    • G02B15/143507—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative arranged -++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
JP60062968A 1985-03-27 1985-03-27 小型ズ−ムレンズ Expired - Fee Related JPH0752256B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP60062968A JPH0752256B2 (ja) 1985-03-27 1985-03-27 小型ズ−ムレンズ
US06/843,684 US4733952A (en) 1985-03-27 1986-03-25 Small zoom lens
DE19863610472 DE3610472A1 (de) 1985-03-27 1986-03-27 Klein-zoomobjektiv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60062968A JPH0752256B2 (ja) 1985-03-27 1985-03-27 小型ズ−ムレンズ

Publications (2)

Publication Number Publication Date
JPS61221719A JPS61221719A (ja) 1986-10-02
JPH0752256B2 true JPH0752256B2 (ja) 1995-06-05

Family

ID=13215646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60062968A Expired - Fee Related JPH0752256B2 (ja) 1985-03-27 1985-03-27 小型ズ−ムレンズ

Country Status (3)

Country Link
US (1) US4733952A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH0752256B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3610472A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6836375B1 (en) 2002-07-02 2004-12-28 Canon Kabushiki Kaisha Zoom lens system and image pickup apparatus having the same
US7061685B2 (en) 2003-10-31 2006-06-13 Canon Kabushiki Kaisha Zoom lens system
US7075733B2 (en) 2004-06-16 2006-07-11 Canon Kabushiki Kaisha Zoom lens system and image pickup apparatus including the same

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5270866A (en) * 1986-07-18 1993-12-14 Canon Kabushiki Kaisha Compact zoom lens
JP2552861B2 (ja) * 1987-05-26 1996-11-13 オリンパス光学工業株式会社 変倍レンズ
US4906078A (en) * 1987-08-12 1990-03-06 Olympus Optical Co., Ltd. Variable magnification viewfinder
US4952038A (en) * 1988-04-08 1990-08-28 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system for use in compact camera
US5262897A (en) * 1991-12-13 1993-11-16 Olympus Optical Co., Ltd. Zoom lens system
JP3081698B2 (ja) * 1991-12-24 2000-08-28 オリンパス光学工業株式会社 ３群ズームレンズ
JP3503902B2 (ja) * 1992-05-18 2004-03-08 富士写真光機株式会社 小型ズームレンズ
US5745301A (en) * 1994-12-19 1998-04-28 Benopcon, Inc. Variable power lens systems for producing small images
JP3590807B2 (ja) * 1995-03-08 2004-11-17 株式会社ニコン ズームレンズ
JP3709000B2 (ja) * 1995-12-12 2005-10-19 ペンタックス株式会社 超広角ズームレンズカメラ
US6308011B1 (en) 1998-03-31 2001-10-23 Canon Kabushiki Kaisha Zoom lens and photographic apparatus having the same
JP3709148B2 (ja) * 2001-03-19 2005-10-19 ペンタックス株式会社 ズームレンズ系
JP3862520B2 (ja) 2001-06-08 2006-12-27 キヤノン株式会社 ズームレンズ及びそれを用いた光学機器
JP2004077803A (ja) * 2002-08-19 2004-03-11 Canon Inc ズームレンズ及びそれを用いた光学機器
JP2005062227A (ja) * 2003-08-11 2005-03-10 Canon Inc ズームレンズ及びそれを有する撮像装置
JP4537114B2 (ja) 2004-05-07 2010-09-01 キヤノン株式会社 ズームレンズ
JP4708734B2 (ja) 2004-05-28 2011-06-22 キヤノン株式会社 ズームレンズ及びそれを有する撮像装置
JP4585794B2 (ja) 2004-05-31 2010-11-24 キヤノン株式会社 ズームレンズ及びそれを有する撮像装置
JP6721859B2 (ja) * 2016-02-29 2020-07-15 株式会社ニコン 光学系及び光学機器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465343A (en) * 1980-05-10 1984-08-14 Minolta Camera Kabushiki Kaisha Zoom lens system
JPS5726816A (en) * 1980-07-24 1982-02-13 Minolta Camera Co Ltd Wide angle zoom lens system consisting of three components
JPS584113A (ja) * 1981-06-30 1983-01-11 Minolta Camera Co Ltd ズ−ムレンズ系
JPS5895315A (ja) * 1981-11-30 1983-06-06 Minolta Camera Co Ltd 広角域を含む高変倍率ズ−ムレンズ系
JPS58111013A (ja) * 1981-12-24 1983-07-01 Canon Inc 小型の広角ズ−ムレンズ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6836375B1 (en) 2002-07-02 2004-12-28 Canon Kabushiki Kaisha Zoom lens system and image pickup apparatus having the same
US7061685B2 (en) 2003-10-31 2006-06-13 Canon Kabushiki Kaisha Zoom lens system
US7075733B2 (en) 2004-06-16 2006-07-11 Canon Kabushiki Kaisha Zoom lens system and image pickup apparatus including the same

Also Published As

Publication number Publication date
US4733952A (en) 1988-03-29
DE3610472A1 (de) 1986-10-09
JPS61221719A (ja) 1986-10-02
DE3610472C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-07-29

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees