TW257837B - Zoom lens - Google Patents

Zoom lens

Info

Publication number
TW257837B
TW257837B TW083107959A TW83107959A TW257837B TW 257837 B TW257837 B TW 257837B TW 083107959 A TW083107959 A TW 083107959A TW 83107959 A TW83107959 A TW 83107959A TW 257837 B TW257837 B TW 257837B
Authority
TW
Taiwan
Prior art keywords
lens
lens units
refractive power
separations
wide
Prior art date
Application number
TW083107959A
Other languages
English (en)
Inventor
Akihiro Nishio
Original Assignee
Canon 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
Priority claimed from JP5243837A external-priority patent/JP3057977B2/ja
Priority claimed from JP31896893A external-priority patent/JP3186388B2/ja
Application filed by Canon Kk filed Critical Canon Kk
Application granted granted Critical
Publication of TW257837B publication Critical patent/TW257837B/zh

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
    • G02B15/144—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 four groups only
    • G02B15/1445—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 four groups only the first group being negative
    • G02B15/144507—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 four groups only the first group being negative arranged -++-

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
TW083107959A 1993-09-03 1994-08-30 Zoom lens TW257837B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5243837A JP3057977B2 (ja) 1993-09-03 1993-09-03 ズームレンズ
JP31896893A JP3186388B2 (ja) 1993-11-25 1993-11-25 ズームレンズ

Publications (1)

Publication Number Publication Date
TW257837B true TW257837B (en) 1995-09-21

Family

ID=26536457

Family Applications (1)

Application Number Title Priority Date Filing Date
TW083107959A TW257837B (en) 1993-09-03 1994-08-30 Zoom lens

Country Status (2)

Country Link
US (1) US5523888A (zh)
TW (1) TW257837B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113552707A (zh) * 2020-04-24 2021-10-26 维克多哈苏有限公司 透镜系统以及摄像装置

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831772A (en) * 1993-04-07 1998-11-03 Canon Kabushiki Kaisha Compact zoom lens
US6028716A (en) 1993-11-29 2000-02-22 Canon Kabushiki Kaisha Zoom lens
US5867325A (en) * 1995-01-05 1999-02-02 Nikon Corporation Zoom lens ranging to wide angles
JP3432050B2 (ja) * 1995-07-21 2003-07-28 オリンパス光学工業株式会社 高変倍３群ズームレンズ
JPH09146001A (ja) * 1995-11-24 1997-06-06 Nikon Corp 変倍光学系
US6141159A (en) * 1997-07-11 2000-10-31 Canon Kabushiki Kaisha Viewfinder optical system
US6115188A (en) * 1997-10-16 2000-09-05 Canon Kabushiki Kaisha Optical system and optical apparatus having the same
US6285509B1 (en) 1997-12-25 2001-09-04 Canon Kabushiki Kaisha Zoom lens and display apparatus having the same
JP4146977B2 (ja) 1999-12-10 2008-09-10 キヤノン株式会社 ズームレンズ
JP2001228399A (ja) 2000-02-18 2001-08-24 Canon Inc ズームレンズ及びそれを用いた光学機器
JP3564057B2 (ja) * 2000-11-02 2004-09-08 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
JP4382413B2 (ja) * 2003-07-31 2009-12-16 日東光学株式会社 レンズシステムおよびカメラ
JP4525039B2 (ja) * 2003-09-30 2010-08-18 株式会社ニコン ズームレンズ
JP4157086B2 (ja) * 2004-09-24 2008-09-24 株式会社東芝 ズームレンズユニットおよび撮像装置
US9250422B2 (en) * 2012-03-25 2016-02-02 Iain A. Neil Zoom lens with forward-located aperture stop
JP2015166834A (ja) * 2014-03-04 2015-09-24 ソニー株式会社 ズームレンズおよび撮像装置
TWI526712B (zh) * 2014-05-09 2016-03-21 信泰光學（深圳）有限公司 成像鏡頭

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62235916A (ja) * 1986-04-07 1987-10-16 Fuji Photo Film Co Ltd ズ−ムレンズ
US4756609A (en) * 1987-07-13 1988-07-12 Eastman Kodak Company Four component compact zoom lens
JP2676384B2 (ja) * 1988-09-07 1997-11-12 コニカ株式会社 コンパクトなズームレンズ
US5111338A (en) * 1990-02-17 1992-05-05 Canon Kabushiki Kaisha Zoom Lens
JP3136151B2 (ja) * 1990-02-28 2001-02-19 オリンパス光学工業株式会社 ズームレンズ
JP3206908B2 (ja) * 1990-03-30 2001-09-10 東洋製罐株式会社 コンパクトなズームレンズ
JP2903482B2 (ja) * 1990-06-04 1999-06-07 オリンパス光学工業株式会社 ズームレンズ
JP3009052B2 (ja) * 1990-07-18 2000-02-14 オリンパス光学工業株式会社 小型の３群ズームレンズ
US5264965A (en) * 1991-02-15 1993-11-23 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113552707A (zh) * 2020-04-24 2021-10-26 维克多哈苏有限公司 透镜系统以及摄像装置

Also Published As

Publication number Publication date
US5523888A (en) 1996-06-04

Similar Documents

Publication Publication Date Title
TW257837B (en) Zoom lens
EP0401862A3 (en) Zoom lens of rear focus type
US4838666A (en) Wide angle zoom lens of long back focal distance
MY106892A (en) Compact varifocal lens.
GB2308204B (en) Super wide-angle zoom lens with negative first group
TW491948B (en) Zoom lens
ATE443275T1 (de) Vibrationsbeständiges telezoomobjektiv mit vier linsengruppen
MY104524A (en) Small-sized zoom lens.
DE69404197D1 (de) Asphärisches Weitwinkel-Zoomobjektiv
TW256882B (en) Zoom lens
MY120446A (en) Two lens group zoom lens system with a high zooming ratio
SG139538A1 (en) A zooms lens and an imaging apparatus
JPS6468709A (en) Zoom lens
JPS6472114A (en) Zoom lens
TW338798B (en) Variable-fold optic system
GB2260423B (en) Three group zoom lens system including at least two aspheric surfaces
JPS5767908A (en) Wide-angle zoom lens
JPS57169716A (en) Zoom lens system of high variable magnification including wide angle region
JPS56126819A (en) Compact telephoto zoom lens
TW258791B (en) Zoom lens
JPS6479716A (en) Zoom lens
MY112554A (en) Zoom lens of rear focus type.
JPS57195213A (en) Compact zoom lens
JPS647013A (en) Small-sized high variable power zoom lens
JPS6474521A (en) Rear focus type zoom lens