JP2015026030A5 - - Google Patents

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JP2015026030A5
JP2015026030A5 JP2013157109A JP2013157109A JP2015026030A5 JP 2015026030 A5 JP2015026030 A5 JP 2015026030A5 JP 2013157109 A JP2013157109 A JP 2013157109A JP 2013157109 A JP2013157109 A JP 2013157109A JP 2015026030 A5 JP2015026030 A5 JP 2015026030A5
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Prior art keywords
lens group
optical system
end state
distance
lens
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JP2013157109A
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Japanese (ja)
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JP6232806B2 (en
JP2015026030A (en
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Priority claimed from JP2013157109A external-priority patent/JP6232806B2/en
Priority to JP2013157109A priority Critical patent/JP6232806B2/en
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Priority to CN201480043000.8A priority patent/CN105431758B/en
Priority to PCT/JP2014/003955 priority patent/WO2015015792A1/en
Priority to CN201810239098.4A priority patent/CN108363193B/en
Publication of JP2015026030A publication Critical patent/JP2015026030A/en
Priority to US15/004,931 priority patent/US20160216496A1/en
Publication of JP2015026030A5 publication Critical patent/JP2015026030A5/ja
Publication of JP6232806B2 publication Critical patent/JP6232806B2/en
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Priority to US16/995,196 priority patent/US11635603B2/en
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また、このような変倍光学系は、次式の条件を満足することが好ましい。
２．００ ＜ ｆ１２ｗ／ｆ３ ＜ ５．００
但し、
ｆ１２ｗ：広角端状態における第１レンズ群と第２レンズ群との合成焦点距離
ｆ３：第３レンズ群の焦点距離 Moreover, it is preferable that such a variable magnification optical system satisfies the condition of the following formula.
2.00 <f12w / f3 <5.00
However,
f12w: Composite focal length of the first lens group and the second lens group in the wide-angle end state f3: Focal length of the third lens group

２．００ ＜ ｆ１２ｗ／ｆ３ ＜ ５．００ （２）
但し、
ｆ１２ｗ：広角端状態における第１レンズ群Ｇ１と第２レンズ群Ｇ２との合成焦点距離
ｆ３：第３レンズ群Ｇ３の焦点距離 2.00 <f12w / f3 <5.00 (2)
However,
f12w: Composite focal length of the first lens group G1 and the second lens group G2 in the wide-angle end state f3: Focal length of the third lens group G3

Claims (16)

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、
負の屈折力を有する第３レンズ群と、
正の屈折力を有する第４レンズ群と、
負の屈折力を有する第５レンズ群と、
正の屈折力を有する第６レンズ群と、を有し、
広角端状態から望遠端状態への変倍に際し、前記第１レンズ群と前記第２レンズ群との間隔が変化し、前記第２レンズ群と前記第３レンズ群との間隔が変化し、前記第３レンズ群と前記第４レンズ群との間隔が変化し、前記第４レンズ群と前記第５レンズ群との間隔が変化し、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、
無限遠物体から近距離物体への合焦に際し、前記第３レンズ群が光軸方向に移動し、
前記第５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持つように移動し、
次式の条件を満足することを特徴とする変倍光学系。
０．８０ ＜ ｆ５／ｆ３ ＜ １．３０
但し、
ｆ３：前記第３レンズ群の焦点距離
ｆ５：前記第５レンズ群の焦点距離 From the object side,
A first lens group having a positive refractive power;
A second lens group having negative refractive power;
A third lens group having negative refractive power;
A fourth lens group having a positive refractive power;
A fifth lens group having negative refractive power;
A sixth lens group having a positive refractive power;
During zooming from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group changes, and the distance between the second lens group and the third lens group changes, The distance between the third lens group and the fourth lens group changes, the distance between the fourth lens group and the fifth lens group changes, and the distance between the fifth lens group and the sixth lens group changes. Change,
When focusing from an object at infinity to an object at a short distance, the third lens group moves in the optical axis direction,
Moving so that at least a part of the fifth lens group has a component in a direction perpendicular to the optical axis;
A variable magnification optical system characterized by satisfying the following condition:
0.80 <f5 / f3 <1.30
However,
f3: focal length of the third lens group f5: focal length of the fifth lens group 広角端状態から望遠端状態への変倍に際し、前記第１レンズ群が物体方向に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。   2. The zoom optical system according to claim 1, wherein the first lens unit moves in the object direction when 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に際し、前記第１レンズ群と前記第２レンズ群との間隔が増大し、前記第３レンズ群と前記第４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または２に記載の変倍光学系。   In zooming from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group increases, and the distance between the third lens group and the fourth lens group decreases. The variable power optical system according to claim 1 or 2, characterized in that: 広角端状態から望遠端状態への変倍に際し、前記第４レンズ群と前記第６レンズ群とが物体方向に移動し、前記第２レンズ群と前記第３レンズ群との間隔が増大し、前記第４レンズ群と前記第５レンズ群との間隔が増大し、前記第５レンズ群と前記第６レンズ群との間隔が減少することを特徴とする請求項１〜３のいずれか一項に記載の変倍光学系。   During zooming from the wide-angle end state to the telephoto end state, the fourth lens group and the sixth lens group move in the object direction, and the distance between the second lens group and the third lens group increases. The distance between the fourth lens group and the fifth lens group is increased, and the distance between the fifth lens group and the sixth lens group is decreased. The zoom optical system according to 1. 次式の条件を満足することを特徴とする請求項１〜４のいずれか一項に記載の変倍光学系。
２．００ ＜ ｆ１２ｗ／ｆ３ ＜ ５．００
但し、
ｆ１２ｗ：広角端状態における前記第１レンズ群と前記第２レンズ群との合成焦点距離
ｆ３：前記第３レンズ群の焦点距離 The zoom lens system according to any one of claims 1 to 4, wherein a condition of the following formula is satisfied.
2.00 <f12w / f3 <5.00
However,
f12w: Composite focal length of the first lens group and the second lens group in the wide-angle end state f3: Focal length of the third lens group 前記第３レンズ群が１枚の負レンズのみで構成されていることを特徴とする請求項１〜５のいずれか一項に記載の変倍光学系。   The zoom optical system according to any one of claims 1 to 5, wherein the third lens group includes only one negative lens. 前記第３レンズ群の最も物体側の面が非球面であることを特徴とする請求項１〜６のいずれか一項に記載の変倍光学系。   The variable magnification optical system according to claim 1, wherein the most object side surface of the third lens group is an aspherical surface. 前記第５レンズ群は、物体側から順に、両凹レンズと物体側に凸面を向けた正メニスカスレンズとが接合された接合レンズで構成されることを特徴とする請求項１〜７のいずれか一項に記載の変倍光学系。   The fifth lens group includes a cemented lens in which a biconcave lens and a positive meniscus lens having a convex surface facing the object side are cemented in order from the object side. The zoom optical system according to item. 前記第５レンズ群の最も物体側の面が非球面であることを特徴とする請求項１〜８のいずれか一項に記載の変倍光学系。   9. The variable magnification optical system according to claim 1, wherein a surface closest to the object side of the fifth lens group is an aspherical surface. 次式の条件を満足することを特徴とする請求項１〜９のいずれか一項に記載の変倍光学系。
０．４５ ＜ ｆ１／ｆｔ ＜ ０．９０
但し、
ｆｔ：望遠端状態における前記変倍光学系の全系の焦点距離
ｆ１：前記第１レンズ群の焦点距離 The variable power optical system according to claim 1, wherein a condition of the following formula is satisfied.
0.45 <f1 / ft <0.90
However,
ft: focal length of the entire zoom optical system in the telephoto end state f1: focal length of the first lens group 次式の条件を満足することを特徴とする請求項１〜１０のいずれか一項に記載の変倍光学系。
１．００ ＜ ｆ４／ｆｗ ＜ １．７０
但し、
ｆｗ：広角端状態における前記変倍光学系の全系の焦点距離
ｆ４：前記第４レンズ群の焦点距離 The variable magnification optical system according to claim 1, wherein the condition of the following formula is satisfied.
1.00 <f4 / fw <1.70
However,
fw: focal length of the entire zoom optical system in the wide-angle end state f4: focal length of the fourth lens group 次式の条件を満足することを特徴とする請求項１〜１１のいずれか一項に記載の変倍光学系。
１．４０ ＜ （−ｆ５）／ｆｗ ＜ ２．３０
但し、
ｆｗ：広角端状態における前記変倍光学系の全系の焦点距離
ｆ５：前記第５レンズ群の焦点距離 The zoom lens system according to any one of claims 1 to 11, wherein a condition of the following formula is satisfied.
1.40 <(− f5) / fw <2.30
However,
fw: focal length of the entire zoom optical system in the wide-angle end state f5: focal length of the fifth lens group 次式の条件を満足することを特徴とする請求項１〜１２のいずれか一項に記載の変倍光学系。
１．６０ ＜ ｆ６／ｆｗ ＜ ２．６０
但し、
ｆｗ：広角端状態における前記変倍光学系の全系の焦点距離
ｆ６：前記第６レンズ群の焦点距離 The variable power optical system according to claim 1, wherein a condition of the following formula is satisfied.
1.60 <f6 / fw <2.60
However,
fw: focal length of the entire zoom optical system in the wide-angle end state f6: focal length of the sixth lens group 広角端状態から望遠端状態への変倍に際し、前記第４レンズ群と前記第６レンズ群とが一体に移動することを特徴とする請求項１〜１３のいずれか一項に記載の変倍光学系。   The zooming according to any one of claims 1 to 13, wherein the fourth lens group and the sixth lens group move together when zooming from the wide-angle end state to the telephoto end state. Optical system. 請求項１〜１４のいずれか一項に記載の変倍光学系を備えたことを特徴とする光学装置。   An optical apparatus comprising the variable magnification optical system according to claim 1. 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、負の屈折力を有する第３レンズ群と、正の屈折力を有する第４レンズ群と、負の屈折力を有する第５レンズ群と、正の屈折力を有する第６レンズ群と、を有する変倍光学系の製造方法であって、
広角端状態から望遠端状態への変倍に際し、前記第１レンズ群と前記第２レンズ群との間隔が変化し、前記第２レンズ群と前記第３レンズ群との間隔が変化し、前記第３レンズ群と前記第４レンズ群との間隔が変化し、前記第４レンズ群と前記第５レンズ群との間隔が変化し、前記第５レンズ群と前記第６レンズ群との間隔が変化するように配置し、
無限遠物体から近距離物体への合焦に際し、前記第３レンズ群が光軸方向に移動するように配置し、
前記第５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持つように移動するように配置し、
次式の条件を満足するように配置することを特徴とする変倍光学系の製造方法。
０．８０ ＜ ｆ５／ｆ３ ＜ １．３０
但し、
ｆ３：前記第３レンズ群の焦点距離
ｆ５：前記第５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 negative refractive power, and a fourth lens having a positive refractive power A variable magnification optical system having a group, a fifth lens group having a negative refractive power, and a sixth lens group having a positive refractive power,
During zooming from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group changes, and the distance between the second lens group and the third lens group changes, The distance between the third lens group and the fourth lens group changes, the distance between the fourth lens group and the fifth lens group changes, and the distance between the fifth lens group and the sixth lens group changes. Arrange to change,
When focusing from an object at infinity to an object at a short distance, the third lens group is arranged to move in the optical axis direction,
Arranged so that at least a part of the fifth lens group moves so as to have a component in a direction perpendicular to the optical axis;
A method of manufacturing a variable magnification optical system, wherein the zoom lens is disposed so as to satisfy the condition of the following formula.
0.80 <f5 / f3 <1.30
However,
f3: focal length of the third lens group f5: focal length of the fifth lens group
JP2013157109A 2013-07-29 2013-07-29 Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method Active JP6232806B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2013157109A JP6232806B2 (en) 2013-07-29 2013-07-29 Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method
CN201480043000.8A CN105431758B (en) 2013-07-29 2014-07-28 Variable-power optical system, optical device and the manufacture method for variable-power optical system
PCT/JP2014/003955 WO2015015792A1 (en) 2013-07-29 2014-07-28 Variable magnification optical system, optical device, and method for manufacturing variable magnification optical system
CN201810239098.4A CN108363193B (en) 2013-07-29 2014-07-28 Variable magnification optical system and optical apparatus
US15/004,931 US20160216496A1 (en) 2013-07-29 2016-01-23 Variable power optical system, optical apparatus and manufacturing method for variable power optical system
US16/995,196 US11635603B2 (en) 2013-07-29 2020-08-17 Variable power optical system, optical apparatus and manufacturing method for variable power optical system

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JP2013157109A JP6232806B2 (en) 2013-07-29 2013-07-29 Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method

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JP2017204936A Division JP6620998B2 (en) 2017-10-24 2017-10-24 Variable magnification optical system and optical apparatus

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JP2015026030A JP2015026030A (en) 2015-02-05
JP2015026030A5 true JP2015026030A5 (en) 2016-09-15
JP6232806B2 JP6232806B2 (en) 2017-11-22

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* Cited by examiner, † Cited by third party
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US20220357562A1 (en) * 2019-08-26 2022-11-10 Nikon Corporation Zoom optical system, optical apparatus and method for manufacturing the zoom optical system

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* Cited by examiner, † Cited by third party
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US8068281B2 (en) * 2008-04-02 2011-11-29 Panasonic Corporation Zoom lens system, interchangeable lens apparatus and camera system
JP4891441B2 (en) * 2011-01-18 2012-03-07 オリンパス株式会社 Zoom lens and imaging apparatus
JP4891439B2 (en) * 2011-01-18 2012-03-07 オリンパス株式会社 Zoom lens and imaging apparatus
JP4891440B2 (en) * 2011-01-18 2012-03-07 オリンパス株式会社 Zoom lens and imaging apparatus
JP5585719B2 (en) * 2011-03-08 2014-09-10 コニカミノルタ株式会社 Zoom lens, imaging optical device and digital device

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