JP2014098794A5 - Variable magnification optical system, optical device - Google Patents

Variable magnification optical system, optical device Download PDF

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Publication number
JP2014098794A5
JP2014098794A5 JP2012250252A JP2012250252A JP2014098794A5 JP 2014098794 A5 JP2014098794 A5 JP 2014098794A5 JP 2012250252 A JP2012250252 A JP 2012250252A JP 2012250252 A JP2012250252 A JP 2012250252A JP 2014098794 A5 JP2014098794 A5 JP 2014098794A5
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Japan
Prior art keywords
lens group
optical system
end state
focal length
zooming
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JP2012250252A
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Japanese (ja)
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JP2014098794A (en
JP6127462B2 (en
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Priority claimed from JP2012250252A external-priority patent/JP6127462B2/en
Priority to JP2012250252A priority Critical patent/JP6127462B2/en
Priority to EP13854627.0A priority patent/EP2921897A4/en
Priority to PCT/JP2013/079241 priority patent/WO2014077120A1/en
Priority to CN201380057471.XA priority patent/CN104769476B/en
Priority to CN201711159252.9A priority patent/CN107884917B/en
Publication of JP2014098794A publication Critical patent/JP2014098794A/en
Priority to US14/700,631 priority patent/US9983391B2/en
Publication of JP2014098794A5 publication Critical patent/JP2014098794A5/en
Publication of JP6127462B2 publication Critical patent/JP6127462B2/en
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Priority to US15/972,004 priority patent/US20180252902A1/en
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Description

上記課題を解決するために本発明は、
物体側から順に、正の屈折力を有する第１レンズ群と、負の屈折力を有する第２レンズ群と、正の屈折力を有する第３レンズ群と、第４レンズ群と、第５レンズ群と、第６レンズ群とを有し、
変倍時に、前記第１レンズ群と前記第２レンズ群との間隔、前記第２レンズ群と前記第３レンズ群との間隔、前記第３レンズ群と前記第４レンズ群との間隔、前記第４レンズ群と前記第５レンズ群との間隔、及び前記第５レンズ群と前記第６レンズ群との間隔が変化し、
以下の条件式を満足することを特徴とする変倍光学系を提供する。
５．５００ ＜ ｆ１／ｆｗ ＜ １０．２００
０．０５７ ＜ （−ｆ２）／ｆｔ ＜ ０．２００
但し、
ｆｗ：広角端状態における前記変倍光学系の焦点距離
ｆｔ：望遠端状態における前記変倍光学系の焦点距離
ｆ１：前記第１レンズ群の焦点距離
ｆ２：前記第２レンズ群の昇天距離 In order to solve the above problems, the present invention
In order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group, and a fifth lens A group and a sixth lens group,
Upon zooming, wherein the first lens group distance between the second lens group, wherein the second lens group spacing between the third lens group, a distance between the fourth lens group and the third lens group, wherein The distance between the fourth lens group and the fifth lens group and the distance between the fifth lens group and the sixth lens group change,
A variable magnification optical system characterized by satisfying the following conditional expression is provided.
5.500 <f1 / fw <10.200
0.057 <(− f2) / ft <0.200
However,
fw: focal length of the variable magnification optical system in the wide-angle end state ft: focal length of the variable magnification optical system in the telephoto end state f1: focal length of the first lens group f2: ascending distance of the second lens group

Claims (15)

物体側から順に、正の屈折力を有する第１レンズ群と、負の屈折力を有する第２レンズ群と、正の屈折力を有する第３レンズ群と、第４レンズ群と、第５レンズ群と、第６レンズ群とを有し、
変倍時に、前記第１レンズ群と前記第２レンズ群との間隔、前記第２レンズ群と前記第３レンズ群との間隔、前記第３レンズ群と前記第４レンズ群との間隔、前記第４レンズ群と前記第５レンズ群との間隔、及び前記第５レンズ群と前記第６レンズ群との間隔が変化し、
以下の条件式を満足することを特徴とする変倍光学系。
５．５００ ＜ ｆ１／ｆｗ ＜ １０．２００
０．０５７ ＜ （−ｆ２）／ｆｔ ＜ ０．２００
但し、
ｆｗ：広角端状態における前記変倍光学系の焦点距離
ｆｔ：望遠端状態における前記変倍光学系の焦点距離
ｆ１：前記第１レンズ群の焦点距離
ｆ２：前記第２レンズ群の焦点距離 In order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group, and a fifth lens A group and a sixth lens group,
Upon zooming, wherein the first lens group distance between the second lens group, wherein the second lens group spacing between the third lens group, a distance between the fourth lens group and the third lens group, wherein The distance between the fourth lens group and the fifth lens group and the distance between the fifth lens group and the sixth lens group change,
A zoom optical system characterized by satisfying the following conditional expression:
5.500 <f1 / fw <10.200
0.057 <(− f2) / ft <0.200
However,
fw: focal length of the variable magnification optical system in the wide-angle end state ft: focal length of the variable magnification optical system in the telephoto end state f1: focal length of the first lens group f2: focal length of the second lens group 広角端状態から望遠端状態への変倍時に、前記第１レンズ群が物体側へ移動することを特徴とする請求項１に記載の変倍光学系。   The zoom optical system according to claim 1, wherein the first lens unit moves toward the object side during zooming from the wide-angle end state to the telephoto end state. 広角端状態から望遠端状態への変倍時に、前記第３レンズ群が物体側へ移動することを特徴とする請求項１又は請求項２に記載の変倍光学系。   3. The zoom optical system according to claim 1, wherein the third lens unit moves toward the object side during zooming from the wide-angle end state to the telephoto end state. 以下の条件式を満足することを特徴とする請求項１から請求項３のいずれか一項に記載の変倍光学系。
０．４２０ ＜ ｆ３／ｆ４ ＜ ２．３００
但し、
ｆ３：前記第３レンズ群の焦点距離
ｆ４：前記第４レンズ群の焦点距離 The zoom lens system according to any one of claims 1 to 3, wherein the following conditional expression is satisfied.
0.420 <f3 / f4 <2.300
However,
f3: focal length of the third lens group f4: focal length of the fourth lens group 以下の条件式を満足することを特徴とする請求項１から請求項４のいずれか一項に記載の変倍光学系。
３．６００ ＜ ｆ１／（−ｆ２） ＜ ７．５１０
但し、
ｆ１：前記第１レンズ群の焦点距離
ｆ２：前記第２レンズ群の焦点距離 The zoom lens system according to claim 1, wherein the following conditional expression is satisfied.
3.600 <f1 / (− f2) <7.510
However,
f1: Focal length of the first lens group f2: Focal length of the second lens group 変倍時に、前記第６レンズ群の位置が固定であることを特徴とする請求項１から請求項５のいずれか一項に記載の変倍光学系。 Upon zooming, zooming optical system according to any one of claims 1 to 5 in which the position of the sixth lens group, characterized in that fixed. 前記第６レンズ群が正の屈折力を有することを特徴とする請求項１から請求項６のいずれか一項に記載の変倍光学系。   The variable power optical system according to any one of claims 1 to 6, wherein the sixth lens group has a positive refractive power. 前記第５レンズ群が負の屈折力を有することを特徴とする請求項１から請求項７のいずれか一項に記載の変倍光学系。   The variable power optical system according to any one of claims 1 to 7, wherein the fifth lens group has a negative refractive power. 前記第４レンズ群が正の屈折力を有することを特徴とする請求項１から請求項８のいずれか一項に記載の変倍光学系。   The variable power optical system according to any one of claims 1 to 8, wherein the fourth lens group has a positive refractive power. 変倍時に、前記第３レンズ群と前記第５レンズ群との距離が一定であることを特徴とする請求項１から請求項９のいずれか一項に記載の変倍光学系。 Upon zooming, zooming optical system as claimed in any one of claims 9, a distance between the fifth lens group and the third lens group being a constant. 広角端状態から望遠端状態への変倍時に、前記第１レンズ群と前記第２レンズ群との間隔が増加することを特徴とする請求項１から請求項１０のいずれか一項に記載の変倍光学系。   11. The distance between the first lens group and the second lens group is increased at the time of zooming from the wide-angle end state to the telephoto end state. Variable magnification optical system. 広角端状態から望遠端状態への変倍時に、前記第２レンズ群と前記第３レンズ群との間隔が減少することを特徴とする請求項１から請求項１１のいずれか一項に記載の変倍光学系。   The distance between the second lens group and the third lens group decreases during zooming from the wide-angle end state to the telephoto end state. Variable magnification optical system. 前記第３レンズ群の少なくとも一部が光軸と直交する方向の成分を含むように移動することを特徴とする請求項１から請求項１２のいずれか一項に記載の変倍光学系。   The variable magnification optical system according to any one of claims 1 to 12, wherein at least a part of the third lens group moves so as to include a component in a direction perpendicular to the optical axis. 合焦時に、前記第４レンズ群の少なくとも一部が光軸方向へ移動することを特徴とする請求項１から請求項１３のいずれか一項に記載の変倍光学系。 When focusing, the variable-power optical system according to any one of claims 1 to claim 13 wherein at least a portion of the fourth lens group, wherein the moving direction of the optical axis. 請求項１から請求項１４のいずれか一項に記載の変倍光学系を有することを特徴とする光学装置。   An optical apparatus comprising the variable magnification optical system according to any one of claims 1 to 14.
JP2012250252A 2012-11-14 2012-11-14 Variable magnification optical system, optical device Active JP6127462B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2012250252A JP6127462B2 (en) 2012-11-14 2012-11-14 Variable magnification optical system, optical device
CN201711159252.9A CN107884917B (en) 2012-11-14 2013-10-29 Variable magnification optical system and optical device
PCT/JP2013/079241 WO2014077120A1 (en) 2012-11-14 2013-10-29 Variable power optical assembly, optical device, and variable power optical assembly fabrication method
CN201380057471.XA CN104769476B (en) 2012-11-14 2013-10-29 The manufacture method of variable-power optical system, Optical devices and variable-power optical system
EP13854627.0A EP2921897A4 (en) 2012-11-14 2013-10-29 Variable power optical assembly, optical device, and variable power optical assembly fabrication method
US14/700,631 US9983391B2 (en) 2012-11-14 2015-04-30 Variable power optical assembly, optical device, and variable power optical assembly fabrication method
US15/972,004 US20180252902A1 (en) 2012-11-14 2018-05-04 Variable power optical assembly, optical device, and variable power optical assembly fabrication method

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JP2014098794A5 true JP2014098794A5 (en) 2015-11-05
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JP6214205B2 (en) * 2013-05-10 2017-10-18 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP6818429B2 (en) * 2016-05-06 2021-01-20 キヤノン株式会社 Zoom lens and imaging device with it
KR102596486B1 (en) 2016-05-26 2023-11-01 한화비전 주식회사 Zoom lens system
JP6289709B2 (en) * 2017-05-19 2018-03-07 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP7270569B2 (en) * 2020-03-11 2023-05-10 富士フイルム株式会社 Zoom lens and imaging device

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JP3932062B2 (en) * 1997-03-26 2007-06-20 株式会社栃木ニコン Zoom lens
JP2003287680A (en) * 2002-03-28 2003-10-10 Minolta Co Ltd Image pickup lens device
JP4324878B2 (en) * 2005-03-11 2009-09-02 ソニー株式会社 Zoom lens system and imaging apparatus
JP4264581B2 (en) * 2006-04-25 2009-05-20 ソニー株式会社 Variable focal length lens system and imaging apparatus

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