JP6570239B2 - 光学系、及びそれを有する光学機器 - Google Patents

光学系、及びそれを有する光学機器 Download PDF

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Publication number
JP6570239B2
JP6570239B2 JP2014234952A JP2014234952A JP6570239B2 JP 6570239 B2 JP6570239 B2 JP 6570239B2 JP 2014234952 A JP2014234952 A JP 2014234952A JP 2014234952 A JP2014234952 A JP 2014234952A JP 6570239 B2 JP6570239 B2 JP 6570239B2
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JP
Japan
Prior art keywords
lens
optical system
object side
lens unit
negative
Prior art date
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Active
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JP2014234952A
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English (en)
Japanese (ja)
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JP2016099436A5 (enExample
JP2016099436A (ja
Inventor
友彦 石橋
友彦 石橋
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
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Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP2014234952A priority Critical patent/JP6570239B2/ja
Priority to US14/940,284 priority patent/US10067322B2/en
Publication of JP2016099436A publication Critical patent/JP2016099436A/ja
Publication of JP2016099436A5 publication Critical patent/JP2016099436A5/ja
Application granted granted Critical
Publication of JP6570239B2 publication Critical patent/JP6570239B2/ja
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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
    • G02B15/142—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 two groups only
    • G02B15/1421—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 two groups only the first group being positive
    • 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
    • G02B15/142—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 two groups only
    • G02B15/1425—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 two groups only the first group being negative
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Nonlinear Science (AREA)
JP2014234952A 2014-11-19 2014-11-19 光学系、及びそれを有する光学機器 Active JP6570239B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014234952A JP6570239B2 (ja) 2014-11-19 2014-11-19 光学系、及びそれを有する光学機器
US14/940,284 US10067322B2 (en) 2014-11-19 2015-11-13 Optical system, and optical apparatus including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014234952A JP6570239B2 (ja) 2014-11-19 2014-11-19 光学系、及びそれを有する光学機器

Publications (3)

Publication Number Publication Date
JP2016099436A JP2016099436A (ja) 2016-05-30
JP2016099436A5 JP2016099436A5 (enExample) 2017-12-28
JP6570239B2 true JP6570239B2 (ja) 2019-09-04

Family

ID=55961517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014234952A Active JP6570239B2 (ja) 2014-11-19 2014-11-19 光学系、及びそれを有する光学機器

Country Status (2)

Country Link
US (1) US10067322B2 (enExample)
JP (1) JP6570239B2 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6392153B2 (ja) * 2015-03-24 2018-09-19 富士フイルム株式会社 撮像レンズおよび撮像装置
US11435507B2 (en) 2019-02-12 2022-09-06 Canon Kabushiki Kaisha Optical element, optical system, and imaging apparatus
JP6774537B2 (ja) * 2019-06-27 2020-10-28 株式会社タムロン 広角レンズ及び撮像装置
WO2021230218A1 (ja) * 2020-05-12 2021-11-18 株式会社nittoh レンズシステムおよびプロジェクタ
US12265206B2 (en) * 2020-10-08 2025-04-01 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144616A (ja) * 1984-12-18 1986-07-02 Olympus Optical Co Ltd 明るい広角レンズ
JP3541983B2 (ja) 1995-05-19 2004-07-14 オリンパス株式会社 広角レンズ
JPH11133304A (ja) * 1997-10-30 1999-05-21 Canon Inc ズームレンズ
JP3927670B2 (ja) * 1997-12-01 2007-06-13 キヤノン株式会社 ズームレンズ
JP4653284B2 (ja) * 2000-06-21 2011-03-16 株式会社シグマ 大口径比望遠ズームレンズ
EP1787154B1 (de) * 2004-09-07 2014-07-09 Carl Zeiss AG Objektiv
JP5320995B2 (ja) * 2008-01-18 2013-10-23 株式会社ニコン 広角レンズ、光学装置
US8000035B2 (en) * 2008-01-18 2011-08-16 Nikon Corporation Wide-angle lens, optical apparatus, and method for focusing
JP5207121B2 (ja) 2008-02-22 2013-06-12 株式会社ニコン 広角レンズ及びこれを有する撮像装置
JP5202025B2 (ja) * 2008-02-25 2013-06-05 キヤノン株式会社 撮像光学系及びそれを有する撮像装置
JP5262281B2 (ja) * 2008-05-14 2013-08-14 株式会社ニコン 広角レンズ、および撮像装置
JP5424745B2 (ja) 2009-07-02 2014-02-26 キヤノン株式会社 光学系及びそれを有する光学機器
JP5959999B2 (ja) * 2012-08-31 2016-08-02 株式会社シグマ 光学系
JP6046504B2 (ja) * 2013-01-25 2016-12-14 株式会社シグマ 撮像レンズ系
JP6112945B2 (ja) 2013-04-05 2017-04-12 キヤノン株式会社 光学系及びそれを有する撮像装置
JP6413392B2 (ja) * 2014-06-30 2018-10-31 株式会社シグマ 光学系

Also Published As

Publication number Publication date
US20160139385A1 (en) 2016-05-19
US10067322B2 (en) 2018-09-04
JP2016099436A (ja) 2016-05-30

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