JP5132343B2 - ズームレンズ及びそれを有する画像投射装置 - Google Patents

ズームレンズ及びそれを有する画像投射装置 Download PDF

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Publication number
JP5132343B2
JP5132343B2 JP2008023848A JP2008023848A JP5132343B2 JP 5132343 B2 JP5132343 B2 JP 5132343B2 JP 2008023848 A JP2008023848 A JP 2008023848A JP 2008023848 A JP2008023848 A JP 2008023848A JP 5132343 B2 JP5132343 B2 JP 5132343B2
Authority
JP
Japan
Prior art keywords
lens
lens group
zoom
refractive power
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
JP2008023848A
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English (en)
Japanese (ja)
Other versions
JP2009186569A (ja
JP2009186569A5 (enExample
Inventor
和宏 猪子
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP2008023848A priority Critical patent/JP5132343B2/ja
Priority to EP09001116.4A priority patent/EP2085804B1/en
Priority to EP11005733.8A priority patent/EP2378335B1/en
Priority to EP11005734.6A priority patent/EP2378336B1/en
Priority to CN2011102289436A priority patent/CN102243364B/zh
Priority to US12/365,482 priority patent/US7817345B2/en
Priority to CN2009100096906A priority patent/CN101504483B/zh
Publication of JP2009186569A publication Critical patent/JP2009186569A/ja
Priority to US12/883,075 priority patent/US8077397B2/en
Publication of JP2009186569A5 publication Critical patent/JP2009186569A5/ja
Application granted granted Critical
Publication of JP5132343B2 publication Critical patent/JP5132343B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/22—Telecentric objectives or lens systems
    • 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
    • G02B15/145—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 five groups only
    • G02B15/1455—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 five groups only the first group being negative
    • G02B15/145523—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 five groups only the first group being negative arranged -++-+
    • 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
    • G02B15/145—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 five groups only
    • G02B15/1455—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 five groups only the first group being negative
    • G02B15/145531—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 five groups only the first group being negative arranged -++++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Projection Apparatus (AREA)
JP2008023848A 2008-02-04 2008-02-04 ズームレンズ及びそれを有する画像投射装置 Expired - Fee Related JP5132343B2 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2008023848A JP5132343B2 (ja) 2008-02-04 2008-02-04 ズームレンズ及びそれを有する画像投射装置
EP11005733.8A EP2378335B1 (en) 2008-02-04 2009-01-27 Zoom lens of the retrofocus type and having five lens groups
EP11005734.6A EP2378336B1 (en) 2008-02-04 2009-01-27 Zoom lens of the retrofocus type and having five lens groups
EP09001116.4A EP2085804B1 (en) 2008-02-04 2009-01-27 Zoom lens of the retrofocus type having five lens groups
CN2011102289436A CN102243364B (zh) 2008-02-04 2009-02-04 变焦透镜和包含变焦透镜的图像投影装置
US12/365,482 US7817345B2 (en) 2008-02-04 2009-02-04 Zoom lens and image projection apparatus including the same
CN2009100096906A CN101504483B (zh) 2008-02-04 2009-02-04 变焦透镜和包含变焦透镜的图像投影装置
US12/883,075 US8077397B2 (en) 2008-02-04 2010-09-15 Zoom lens and image projection apparatus including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008023848A JP5132343B2 (ja) 2008-02-04 2008-02-04 ズームレンズ及びそれを有する画像投射装置

Publications (3)

Publication Number Publication Date
JP2009186569A JP2009186569A (ja) 2009-08-20
JP2009186569A5 JP2009186569A5 (enExample) 2011-02-10
JP5132343B2 true JP5132343B2 (ja) 2013-01-30

Family

ID=40373561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008023848A Expired - Fee Related JP5132343B2 (ja) 2008-02-04 2008-02-04 ズームレンズ及びそれを有する画像投射装置

Country Status (4)

Country Link
US (2) US7817345B2 (enExample)
EP (3) EP2378335B1 (enExample)
JP (1) JP5132343B2 (enExample)
CN (2) CN102243364B (enExample)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010160478A (ja) * 2008-12-08 2010-07-22 Fujinon Corp 投写用ズームレンズおよび投写型表示装置
JP5287326B2 (ja) * 2009-02-16 2013-09-11 セイコーエプソン株式会社 投射用ズームレンズ及び投射型画像表示装置
JP5653165B2 (ja) * 2009-12-22 2015-01-14 キヤノン株式会社 ズームレンズ
US8144401B2 (en) * 2010-02-10 2012-03-27 Young Optics Inc. Zoom lens
JP5513248B2 (ja) * 2010-04-28 2014-06-04 富士フイルム株式会社 投写用ズームレンズおよび投写型表示装置
CN102236149A (zh) * 2010-04-30 2011-11-09 一品光学工业股份有限公司 一种投影镜头系统及其投影装置
TWI417596B (zh) * 2011-02-16 2013-12-01 Largan Precision Co 廣視角攝影鏡頭
JP5777182B2 (ja) 2011-06-27 2015-09-09 富士フイルム株式会社 投写用変倍光学系および投写型表示装置
JP5777225B2 (ja) * 2011-09-16 2015-09-09 富士フイルム株式会社 ズームレンズおよび撮像装置
JP5637110B2 (ja) * 2011-09-21 2014-12-10 コニカミノルタ株式会社 インナーフォーカスズームレンズ
CN102590985B (zh) * 2011-11-15 2013-11-06 深圳市亿思达显示科技有限公司 一种高分辩率广角投影镜头及投影仪
DE102012214303B9 (de) * 2012-08-10 2022-07-07 Carl Zeiss Ag Optisches System zur Abbildung eines Objekts sowie Aufnahmeeinheit mit einem optischen System
JP6253437B2 (ja) * 2014-02-14 2017-12-27 キヤノン株式会社 結像光学系及びそれを有する画像投射装置
JP6276634B2 (ja) * 2014-04-11 2018-02-07 株式会社シグマ 超広角ズームレンズ
JP2016038392A (ja) 2014-08-05 2016-03-22 キヤノン株式会社 投射光学系及びそれを有する画像投射装置
JP6609956B2 (ja) * 2015-03-27 2019-11-27 株式会社シグマ 魚眼レンズ
US9904044B2 (en) * 2015-10-20 2018-02-27 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus including the same
WO2017130265A1 (ja) * 2016-01-25 2017-08-03 オリンパス株式会社 単焦点光学系及びそれを備えた光学装置
JP2017219785A (ja) * 2016-06-10 2017-12-14 セイコーエプソン株式会社 投射用レンズおよびプロジェクター
WO2019157289A2 (en) * 2018-02-12 2019-08-15 Neil Iain A Objective lenses having multiple focal lengths and a small focal-length ratio
JP2020106661A (ja) * 2018-12-27 2020-07-09 株式会社ｎｉｔｔｏｈ 投射用光学系およびプロジェクタ
JP2020134805A (ja) * 2019-02-22 2020-08-31 株式会社ニコン 変倍光学系、光学機器、及び変倍光学系の製造方法
JP7332546B2 (ja) * 2020-07-21 2023-08-23 富士フイルム株式会社 ズームレンズおよび撮像装置
JP7504745B2 (ja) * 2020-10-01 2024-06-24 リコーインダストリアルソリューションズ株式会社 投射用ズームレンズおよび投射装置
JP7608285B2 (ja) 2021-07-08 2025-01-06 キヤノン株式会社 光学系及びそれを有する撮像装置
JP7532457B2 (ja) * 2022-08-30 2024-08-13 キヤノン株式会社 ズームレンズおよび撮像装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4083856B2 (ja) 1998-02-18 2008-04-30 リコー光学株式会社 投射用ズームレンズ
JP4099938B2 (ja) * 2000-09-27 2008-06-11 コニカミノルタオプト株式会社 投射ズームレンズ
US6545817B2 (en) 2000-09-27 2003-04-08 Minolta Co., Ltd. Zoom lens system
US6888683B2 (en) * 2001-05-17 2005-05-03 Canon Kabushiki Kaisha Zoom lens and camera
JP4191966B2 (ja) * 2002-08-21 2008-12-03 日東光学株式会社 投写用ズームレンズシステムおよびプロジェクタ装置
JP2004109896A (ja) * 2002-09-20 2004-04-08 Seiko Epson Corp 投映用ズームレンズ及びこれを備えたプロジェクター
JP2004133338A (ja) 2002-10-15 2004-04-30 Minolta Co Ltd プロジェクタ用投影レンズ
JP4322567B2 (ja) 2003-06-20 2009-09-02 パナソニック株式会社 ズームレンズ、並びにそれを用いた映像拡大投写システム及びビデオプロジェクタ、並びにそのビデオプロジェクタを用いたリアプロジェクタ及びマルチビジョンシステム
EP1574890B1 (en) * 2004-03-10 2016-06-29 Canon Kabushiki Kaisha Zoom lens and image display apparatus including the zoom lens
JP2006065249A (ja) * 2004-08-30 2006-03-09 Fujinon Corp ズームレンズおよびこれを用いた投写型表示装置
JP4874688B2 (ja) 2006-03-30 2012-02-15 富士フイルム株式会社 ズームレンズおよびこれを用いた投写型表示装置

Also Published As

Publication number Publication date
US8077397B2 (en) 2011-12-13
EP2085804A1 (en) 2009-08-05
CN102243364B (zh) 2013-12-04
EP2378335A1 (en) 2011-10-19
US7817345B2 (en) 2010-10-19
US20090195884A1 (en) 2009-08-06
CN101504483B (zh) 2011-09-21
JP2009186569A (ja) 2009-08-20
EP2378336A1 (en) 2011-10-19
CN102243364A (zh) 2011-11-16
EP2085804B1 (en) 2016-07-13
EP2378336B1 (en) 2013-05-08
EP2378335B1 (en) 2013-05-08
CN101504483A (zh) 2009-08-12
US20110002044A1 (en) 2011-01-06

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