JP4120647B2

JP4120647B2 - Zoom lens with anti-vibration function

Info

Publication number: JP4120647B2
Application number: JP2005036624A
Authority: JP
Inventors: 敦史芝山; 圭子水口
Original assignee: Nikon Corp
Current assignee: Nikon Corp
Priority date: 2005-02-14
Filing date: 2005-02-14
Publication date: 2008-07-16
Anticipated expiration: 2025-02-14
Also published as: JP2006221092A

Description

本発明は、フィルムまたは固体撮像素子を用いる一眼レフカメラ用のズームレンズに関し、特に４倍程度のズーム比と広角端状態で２２°以上の画角と防振機能を有する小型の望遠ズームレンズに関する。 The present invention relates to a zoom lens for a single-lens reflex camera using a film or a solid-state imaging device, and more particularly, to a small telephoto zoom lens having a zoom ratio of about 4 times, an angle of view of 22 ° or more at a wide-angle end state, and an image stabilization function. .

従来、防振機能を有し、４倍程度のズーム比を有する望遠ズームレンズが提案されている（例えば、特許文献１、特許文献２参照。）。
特開平８−６２５４１号公報特開平１０−１３３１１４号公報 Conventionally, a telephoto zoom lens having an anti-vibration function and a zoom ratio of about 4 times has been proposed (see, for example, Patent Document 1 and Patent Document 2).
JP-A-8-62541 JP 10-133114 A

特許文献１に開示された実施例は、正・負・正・正・負の５群ズームレンズあるいは、正・負・正・負・正・負の６群ズームレンズであって、負の第２レンズ群を防振のために移動させる構成である。特許文献２に開示された実施例は、正・負・負・正・負の５群ズームレンズであって、正の第４レンズ群の一部のレンズ群を防振のために移動させる構成である。 The embodiment disclosed in Patent Document 1 is a positive / negative / positive / positive / negative five-group zoom lens or a positive / negative / positive / negative / positive / negative six-group zoom lens. In this configuration, the two lens groups are moved for image stabilization. The embodiment disclosed in Patent Document 2 is a positive / negative / negative / positive / negative five-group zoom lens, in which a part of the positive fourth lens group is moved for image stabilization. It is.

しかしながら、いずれの開示例においても防振のために移動させるレンズ群の有効径は２５ｍｍ以上と大きく、防振機構の大型化を招き、ズームレンズの小型化が困難であるという問題がある。また、ズームレンズ群が５群以上であってズーム機構が複雑化するという問題がある。 However, in any of the disclosed examples, there is a problem that the effective diameter of the lens group moved for image stabilization is as large as 25 mm or more, which increases the size of the image stabilization mechanism and makes it difficult to reduce the size of the zoom lens. Further, there is a problem that the zoom mechanism is complicated because there are five or more zoom lens groups.

本発明は、上記問題に鑑みて行われたものであり、フィルムまたは固体撮像素子を用いる一眼レフカメラ用のズームレンズであって、４倍程度のズーム比と広角端状態で２２°以上の画角と防振機能を有する小型の望遠ズームレンズを提供することを目的とする。 The present invention has been made in view of the above problems, and is a zoom lens for a single-lens reflex camera using a film or a solid-state imaging device, and has an image of 22 ° or more at a zoom ratio of about 4 times and a wide-angle end state. An object of the present invention is to provide a small telephoto zoom lens having a corner and an anti-vibration function.

上記目的を達成するために、本発明は、物体側から順に、正屈折力の第１レンズ群と、負屈折力の第２レンズ群と、正屈折力の第３レンズ群とからなり、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レンズ群の間隔は増大し、前記第２レンズ群と前記第３レンズ群の間隔が減少し、前記第３レンズ群は、物体側から順に、正屈折力の第３１レンズ群と、負屈折力の第３２レンズ群と、第３３レンズ群とからなり、前記第３２レンズ群のみを光軸と直交方向に移動させることにより、手ぶれ発生時の像面上の像ぶれ補正をおこない、以下の条件を満足することを特徴とする防振機能を有するズームレンズを提供する。
−２．００＜ｆ３２／ｆ３＜−０．８０
但し、ｆ３は前記第３レンズ群の焦点距離、ｆ３２は前記第３２レンズ群の焦点距離である。 To achieve the above object, the present invention is, in order 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 positive refractive power, wide Upon zooming from the end state to the telephoto end state, the distance between the first lens group and the second lens group increases, the distance between the second lens group and the third lens group decreases, and the third lens The group includes, in order from the object side, a 31st lens group having a positive refractive power, a 32nd lens group having a negative refractive power, and a 33rd lens group, and only the 32nd lens group is moved in a direction orthogonal to the optical axis. By doing so, an image blur correction on the image plane at the time of occurrence of camera shake is performed, and a zoom lens having an image stabilization function characterized by satisfying the following conditions is provided.
−2.00 <f32 / f3 <−0.80
Here, f3 is the focal length of the third lens group, and f32 is the focal length of the 32nd lens group.

また、本発明にかかる防振機能を有するズームレンズは、以下の条件を満足する構成が好ましい。 In addition, the zoom lens having the image stabilization function according to the present invention preferably has a configuration that satisfies the following conditions.

１．４０＜ｆ１／ｆｗ＜２．００
−０．５３＜ｆ２／ｆｗ＜−０．３２
０．３５＜ｆ３／ｆｗ＜０．６５
−０．２０＜ｆ３／ｆ３３＜０．５０
但し、ｆｗは広角端状態におけるズームレンズの焦点距離、ｆ１は前記第１レンズ群の焦点距離、ｆ２は前記第２レンズ群の焦点距離、ｆ３は前記第３レンズ群の焦点距離、ｆ３３は前記第３３レンズ群の焦点距離である。 1.40 <f1 / fw <2.00
−0.53 <f2 / fw <−0.32.
0.35 <f3 / fw <0.65
− 0.20 <f3 / f33 <0.50
However, fw is the focal length of the zoom lens in the wide-angle end state, f1 represents a focal length of the first lens group, f2 is the focal length of the second lens group, f3 is the focal distance of the third lens group, f 33 Is the focal length of the 33rd lens group.

また、本発明にかかる防振機能を有するズームレンズは、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３レンズ群が物体方向に移動する構成が好ましい。 The zoom lens having the image stabilization function according to the present invention preferably has a configuration in which the first lens group and the third lens group move in the object direction when zooming from the wide-angle end state to the telephoto end state.

また、本発明にかかる防振機能を有するズームレンズでは、前記第３１レンズ群は少なくとも３枚の正レンズと少なくとも１枚の負レンズを有し、前記第３２レンズ群は少なくとも１枚の正レンズと少なくとも１枚の負レンズを有し、前記第３３レンズ群は少なくとも１枚の正レンズと少なくとも１枚の負レンズを有する構成が好ましい。 In the zoom lens having an image stabilization function according to the present invention, the thirty-first lens group includes at least three positive lenses and at least one negative lens, and the thirty-second lens group includes at least one positive lens. And at least one negative lens, and the 33rd lens group preferably includes at least one positive lens and at least one negative lens.

また、本発明にかかる防振機能を有するズームレンズでは、前記第３１レンズ群は、物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと物体側に凹面を向けた負レンズとの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、第２接合レンズを有し、以下の条件を満足する構成が好ましい。 In the zoom lens having an image stabilization function according to the present invention, the thirty-first lens group includes, in order from the object side, a biconvex positive lens, a biconvex positive lens, and a negative surface with a concave surface facing the object side. A configuration having a first cemented lens with a lens, a positive meniscus lens with a convex surface facing the object side, and a second cemented lens, and satisfying the following conditions is preferable.

０．２０＜ｎ３１Ｎ−ｎ３１Ｐ
３０．０＜ν３１Ｐ−ν３１Ｎ
但し、ｎ３１Ｎは前記第1接合レンズ中の前記負レンズの屈折率、ｎ３１Ｐは前記第1接合レンズ中の前記両凸形状の正レンズの屈折率、ν３１Ｎは前記第1接合レンズ中の前記負レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数、ν３１Ｐは前記第1接合レンズ中の前記両凸形状の正レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数である。 0.20 <n31N-n31P
30.0 <ν31P-ν31N
Where n31N is the refractive index of the negative lens in the first cemented lens, n31P is the refractive index of the biconvex positive lens in the first cemented lens, and ν31N is the negative lens in the first cemented lens. Abbe number with respect to the d-line (wavelength 587.6 nm), and ν31P is the Abbe number with respect to the d-line (wavelength 587.6 nm) of the biconvex positive lens in the first cemented lens.

また、本発明にかかる防振機能を有するズームレンズでは、前記第３２レンズ群は、物体側から順に、像側に凸面を向けた正レンズと、両凹形状の負レンズを有し、以下の条件を満足する構成が好ましい。 In the zoom lens having an image stabilization function according to the present invention, the thirty-second lens group includes, in order from the object side, a positive lens having a convex surface facing the image side and a biconcave negative lens. A configuration that satisfies the conditions is preferred.

１０．０＜ν３２Ｎ−ν３２Ｐ
但し、ν３２Ｎは前記第３２レンズ群中の前記両凹形状の負レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数、ν３２Ｐは前記第３２レンズ群中の前記正レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数である。 10.0 <ν32N−ν32P
Where ν32N is the Abbe number with respect to the d-line (wavelength 587.6 nm) of the biconcave negative lens in the thirty-second lens group, and ν32P is the d-line (wavelength 587.nm) of the positive lens in the thirty-second lens group. Abbe number for 6 nm).

また、本発明にかかる防振機能を有するズームレンズでは、前記第３２レンズ群は、物体側から順に、像側に凸面を向けた正レンズと両凹形状の負レンズの接合レンズからなり、以下の条件を満足する構成が好ましい。 In the zoom lens having an image stabilization function according to the present invention, the thirty-second lens group includes a cemented lens of a positive lens having a convex surface facing the image side and a biconcave negative lens in order from the object side. A configuration that satisfies the above condition is preferable.

−２．００＜（ｒ３２Ｒ＋ｒ３２Ｆ）／（ｒ３２Ｒ−ｒ３２Ｆ）＜−０．７０
但し、ｒ３２Ｆは前記第３２レンズ群の前記正レンズの物体側面の曲率半径、ｒ３２Ｒは前記第３２レンズ群の前記両凹形状の負レンズの像側面の曲率半径である。 −2.00 <(r32R + r32F) / (r32R−r32F) <− 0.70
Where r32F is the radius of curvature of the object side surface of the positive lens of the 32nd lens group, and r32R is the radius of curvature of the image side surface of the biconcave negative lens of the 32nd lens group.

０．４０＜ｒ３２Ｓ／ｆ３２＜０．９０
但し、ｒ３２Ｓは前記第３２レンズ群の前記接合レンズの接合面の曲率半径、ｆ３２は前記第３２レンズ群の焦点距離である。 0.40 <r32S / f32 <0.90
Here, r32S is the radius of curvature of the cemented surface of the cemented lens of the thirty-second lens group, and f32 is the focal length of the thirty-second lens group.

また、本発明にかかる防振機能を有するズームレンズは、前記第１レンズ群、前記第２レンズ群、および前記第３レンズ群のみからなることが好ましい。 In addition, it is preferable that the zoom lens having the image stabilization function according to the present invention includes only the first lens group, the second lens group, and the third lens group.

また、本発明にかかる防振機能を有するズームレンズでは、前記第１レンズ群は、物体側から順に、正屈折力の第１１レンズ群と、正屈折力の第１２レンズ群からなり、遠距離状態から近距離状態へのフォーカシングに際して、前記第１２レンズ群のみを物体方向に移動させ、以下の条件を満足する構成が好ましい。 In the zoom lens having an image stabilization function according to the present invention, the first lens group includes, in order from the object side, an eleventh lens group having a positive refractive power and a twelfth lens group having a positive refractive power. In focusing from the state to the short distance state, it is preferable that only the twelfth lens group is moved in the object direction and the following condition is satisfied.

１．７０＜ｆ１１／ｆ１２＜４．００
但し、ｆ１１は前記第１１レンズ群の焦点距離、ｆ１２は前記第１２レンズ群の焦点距離である。 1.70 <f11 / f12 <4.00
Here, f11 is the focal length of the eleventh lens group, and f12 is the focal length of the twelfth lens group.

本発明によれば、フィルムまたは固体撮像素子を用いる一眼レフカメラに適した、４倍程度のズーム比と広角端で２２°以上の画角と防振機能を有する小型の望遠ズームレンズを提供することができる。 According to the present invention, there is provided a small telephoto zoom lens suitable for a single-lens reflex camera using a film or a solid-state imaging device, having a zoom ratio of about 4 times, an angle of view of 22 ° or more at a wide angle end, and an image stabilization function. be able to.

以下、本発明の実施の形態にかかる防振機能を有するズームレンズに関し詳説する。 The zoom lens having the image stabilization function according to the embodiment of the present invention will be described in detail below.

本実施の形態にかかる防振機構を有するズームレンズは、物体側から順に、正屈折力の第１レンズ群と、負屈折力の第２レンズ群と、正屈折力の第３レンズ群を有し、広角端状態から望遠端状態への変倍に際し、第１レンズ群と第２レンズ群の間隔は増大し、第２レンズ群と第３レンズ群の間隔が減少する構成である。このような構成とすることでズーム機構の簡素化とズームレンズ全長の小型化に有利となる。 The zoom lens having the image stabilization mechanism according to the present embodiment includes, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power. In the zooming from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group is increased, and the distance between the second lens group and the third lens group is decreased. Such a configuration is advantageous in simplifying the zoom mechanism and reducing the overall length of the zoom lens.

また、第３レンズ群は、物体側から順に、正屈折力の第３１レンズ群と、負屈折力の第３２レンズ群と、第３３レンズ群とからなり、前記第３２レンズ群のみを光軸に直交する方向に移動させることにより、手ぶれ発生時の像面上の像ぶれ補正をおこなう構成である。第３１レンズ群を正屈折力とし第３２レンズ群を負屈折力とすることで、第３２レンズ群の有効径を、第１レンズ群乃至第３１レンズ群の有効径に比べて小型にすることができ、防振機構の小型化を実現でき、ズームレンズ全体の小型化に有利となる。また、このような構成とすることで、第３２レンズ群を光軸と直交方向に移動させたときの結像性能の劣化を小さくできる。 The third lens group includes, in order from the object side, a 31st lens group having a positive refractive power, a 32nd lens group having a negative refractive power, and a 33rd lens group, and only the 32nd lens group has an optical axis. In this configuration, image blur correction on the image plane at the time of occurrence of camera shake is performed by moving in a direction orthogonal to the image. By making the thirty-first lens group positive refracting power and the thirty-second lens group negative refracting power, the effective diameter of the thirty-second lens group is made smaller than the effective diameters of the first to thirty-first lens groups. This makes it possible to reduce the size of the anti-vibration mechanism, which is advantageous for reducing the size of the entire zoom lens. In addition, with such a configuration, it is possible to reduce deterioration in imaging performance when the thirty-second lens group is moved in the direction orthogonal to the optical axis.

また、本実施の形態にかかる防振機構を有するズームレンズは、以下の条件式（１）〜（５）を満足する構成が望ましい。
（１）１．４０＜ｆ１／ｆｗ＜２．００
（２） −０．５３＜ｆ２／ｆｗ＜−０．３２
（３）０．３５＜ｆ３／ｆｗ＜０．６５
（４） −２．００＜ｆ３２／ｆ３＜−０．８０
（５） −０．２０＜ｆ３／ｆ３３＜０．５０
但し、ｆｗは広角端状態におけるズームレンズの焦点距離、ｆ１は第１レンズ群の焦点距離、ｆ２は第２レンズ群の焦点距離、ｆ３は第３レンズ群の焦点距離、ｆ３２は第３２レンズ群の焦点距離、ｆ３３は第３３レンズ群の焦点距離である。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment satisfies the following conditional expressions (1) to (5).
(1) 1.40 <f1 / fw <2.00
(2) -0.53 <f2 / fw <-0.32
(3) 0.35 <f3 / fw <0.65
(4) −2.00 <f32 / f3 <−0.80
(5) -0.20 <f3 / f33 <0.50
Where fw is the focal length of the zoom lens in the wide-angle end state, f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, f3 is the focal length of the third lens group, and f32 is the 32nd lens group. F33 is the focal length of the 33rd lens group.

条件式（１）は第１レンズ群の焦点距離の適切な範囲を規定する。条件式（１）の上限値を越えると第１レンズ群の屈折力が小さくなりズームレンズ全長が大型化する。条件式（１）の下限値を越えると第１レンズ群の屈折力が大きくなり、球面収差と軸上色収差の補正が困難となる。なお、本発明の効果をさらに確実にするために、条件式（１）の下限値を１．５０にするのが望ましい。また、条件式（１）の上限値を１．９０にするのが望ましい。 Conditional expression (1) defines an appropriate range of the focal length of the first lens group. If the upper limit value of conditional expression (1) is exceeded, the refractive power of the first lens group becomes small, and the overall length of the zoom lens becomes large. If the lower limit of conditional expression (1) is exceeded, the refractive power of the first lens group will increase, making it difficult to correct spherical aberration and axial chromatic aberration. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (1) to 1.50. Moreover, it is desirable to set the upper limit of conditional expression (1) to 1.90.

条件式（２）は第２レンズ群の焦点距離の適切な範囲を規定する。条件式（２）の上限値を越えると第２レンズ群の負の屈折力が大きくなり、球面収差とコマ収差の補正が困難となる。条件式（２）の下限値を越えると第２レンズ群の負の屈折力が小さくなり、４倍程度のズーム比を得るのが困難となる。なお、本発明の効果をさらに確実にするために、条件式（２）の下限値を−０．５０にするのが望ましい。また、条件式（２）の上限値を−０．３５にするのが望ましい。 Conditional expression (2) defines an appropriate range of the focal length of the second lens group. If the upper limit value of conditional expression (2) is exceeded, the negative refractive power of the second lens group will increase, making it difficult to correct spherical aberration and coma. When the lower limit of conditional expression (2) is exceeded, the negative refractive power of the second lens group becomes small, and it becomes difficult to obtain a zoom ratio of about 4 times. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (2) to −0.50. In addition, it is desirable to set the upper limit of conditional expression (2) to −0.35.

条件式（３）は第３レンズ群の焦点距離の適切な範囲を規定する。条件式（３）の上限値を越えると第３レンズ群の屈折力が小さくなりズームレンズ全長が大型化する。条件式（３）の下限値を越えると第３レンズ群の屈折力が大きくなり球面収差を始めとする諸収差の補正が困難となる。なお、本発明の効果をさらに確実にするために、条件式（３）の下限値を０．４０にするのが望ましい。また、条件式（３）の上限値を０．６０にするのが望ましい。 Conditional expression (3) defines an appropriate range of the focal length of the third lens group. If the upper limit value of conditional expression (3) is exceeded, the refractive power of the third lens group will be reduced and the overall length of the zoom lens will be increased. If the lower limit of conditional expression (3) is exceeded, the refractive power of the third lens group will increase, making it difficult to correct various aberrations including spherical aberration. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (3) to 0.40. Moreover, it is desirable to set the upper limit of conditional expression (3) to 0.60.

条件式（４）は第３２レンズ群の焦点距離の適切な範囲を規定する。条件式（４）の上限値を越えると第３２レンズ群の負の屈折力が大きくなり、ぶれ補正の際の第３２レンズ群の移動量に対する結像面での像移動量の比が大きくなるため、ぶれ補正の際の第３２レンズ群の駆動誤差の許容量が小さくなり第３２レンズ群の駆動制御が困難となる。条件式（４）の下限値を越えると第３２レンズ群の負の屈折力が小さくなり、ぶれ補正の際の第３２レンズ群の移動量に対する結像面での像移動量の比が小さくなるため、ぶれ補正に要する第３２レンズ群の移動量が大きくなりぶれ補正駆動機構が大型化する。なお、本発明の効果をさらに確実にするために、条件式（４）の下限値を−１．８５にするのが望ましい。また、条件式（４）の上限値を−０．９０にするのが望ましい。 Conditional expression (4) defines an appropriate range of the focal length of the thirty-second lens group. When the upper limit of conditional expression (4) is exceeded, the negative refractive power of the thirty-second lens group increases, and the ratio of the amount of image movement on the imaging surface to the amount of movement of the thirty-second lens group during blur correction increases. Therefore, an allowable amount of drive error of the thirty-second lens group at the time of blur correction becomes small, and drive control of the thirty-second lens group becomes difficult. When the lower limit of conditional expression (4) is exceeded, the negative refractive power of the thirty-second lens group becomes small, and the ratio of the image movement amount on the imaging surface to the movement amount of the thirty-second lens group during blur correction becomes small. For this reason, the amount of movement of the thirty-second lens group required for blur correction becomes large, and the blur correction drive mechanism becomes large. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (4) to −1.85. In addition, it is desirable to set the upper limit of conditional expression (4) to −0.90.

条件式（５）は第３３レンズ群の焦点距離の適切な範囲を規定する。条件式（５）の上限値を越えると第３３レンズ群の正の屈折力が大きくなり、ズームレンズ全長が大型化する。条件式（５）の下限値を越えると第３３レンズ群の負の屈折力が大きくなり、コマ収差と歪曲収差の補正が困難となる。なお、本発明の効果をさらに確実にするために、条件式（５）の下限値を−０．１５にするのが望ましい。また、条件式（５）の上限値を０．４０にするのが望ましい。 Conditional expression (5) defines an appropriate range of the focal length of the 33rd lens group. If the upper limit of conditional expression (5) is exceeded, the positive refractive power of the 33rd lens group will increase and the overall length of the zoom lens will increase. If the lower limit of conditional expression (5) is exceeded, the negative refracting power of the 33rd lens group will increase, making it difficult to correct coma and distortion. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (5) to −0.15. Moreover, it is desirable to set the upper limit of conditional expression (5) to 0.40.

また、本実施の形態にかかる防振機構を有するズームレンズは、広角端状態から望遠端状態への変倍に際し、第１レンズ群と第３レンズ群が物体方向に移動する構成が望ましい。このように構成にすることで、広角端状態でのズームレンズ全長を短くできるためズームレンズが小型化できる。 In addition, the zoom lens having the image stabilization mechanism according to the present embodiment preferably has a configuration in which the first lens group and the third lens group move in the object direction when zooming from the wide-angle end state to the telephoto end state. With this configuration, the entire length of the zoom lens in the wide-angle end state can be shortened, so that the zoom lens can be reduced in size.

また、本実施の形態にかかる防振機構を有するズームレンズは、第３１レンズ群は少なくとも３枚の正レンズと少なくとも１枚の負レンズを有し、第３２レンズ群は少なくとも１枚の正レンズと少なくとも１枚の負レンズを有し、第３３レンズ群は少なくとも１枚の正レンズと少なくとも１枚の負レンズを有する構成が望ましい。これにより防振時の偏心収差が良好に補正できる。 In the zoom lens having the image stabilization mechanism according to the present embodiment, the thirty-first lens group includes at least three positive lenses and at least one negative lens, and the thirty-second lens group includes at least one positive lens. And at least one negative lens, and the thirty-third lens group preferably has at least one positive lens and at least one negative lens. Thereby, the decentration aberration at the time of image stabilization can be corrected satisfactorily.

また、本実施の形態にかかる防振機構を有するズームレンズでは、第３１レンズ群は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと像側に凹面を向けた負レンズとの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、第２接合レンズを有する構成が望ましい。これにより防振時の偏心収差が良好に補正できる。 In the zoom lens having the image stabilization mechanism according to the present embodiment, the thirty-first lens group includes, in order from the object side, a biconvex positive lens, a biconvex positive lens, and a negative lens with a concave surface facing the image side. A configuration having a first cemented lens with a lens, a positive meniscus lens with a convex surface facing the object side, and a second cemented lens is desirable. Thereby, the decentration aberration at the time of image stabilization can be corrected satisfactorily.

また、本実施の形態にかかる防振機構を有するズームレンズは、以下の条件式（６）、（７）を満足する構成が望ましい。
（６）０．２０＜ｎ３１Ｎ−ｎ３１Ｐ
（７）３０．０＜ν３１Ｐ−ν３１Ｎ
但し、ｎ３１Ｎは第1接合レンズ中の負レンズの屈折率、ｎ３１Ｐは第1接合レンズ中の両凸形状の正レンズの屈折率、ν３１Ｎは第1接合レンズ中の負レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数、ν３１Ｐは第1接合レンズ中の正レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数である。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment satisfy the following conditional expressions (6) and (7).
(6) 0.20 <n31N-n31P
(7) 30.0 <ν31P-ν31N
Where n31N is the refractive index of the negative lens in the first cemented lens, n31P is the refractive index of the biconvex positive lens in the first cemented lens, and ν31N is the d-line (wavelength 587) of the negative lens in the first cemented lens. Abbe number with respect to .6 nm), and ν31P is the Abbe number with respect to the d-line (wavelength 587.6 nm) of the positive lens in the first cemented lens.

条件式（６）は第３１レンズ群中の第1接合レンズ中の両凸形状の正レンズと負レンズの屈折率の差の適切な範囲を示す。条件式（６）の下限値を越えると球面収差の良好な補正が困難となる。なお、本発明の効果をさらに確実にするために、条件式（６）の下限値を０．２５にするのが望ましい。 Conditional expression (6) shows an appropriate range of the difference in refractive index between the biconvex positive lens and the negative lens in the first cemented lens in the 31st lens group. Exceeding the lower limit of conditional expression (6) makes it difficult to correct spherical aberration. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (6) to 0.25.

条件式（７）は第３１レンズ群中の第1接合レンズ中の両凸形状の正レンズと負レンズのアッベ数の差の適切な範囲を示す。条件式（７）の下限値を越えると倍率色収差の良好な補正が困難となる。なお、本発明の効果をさらに確実にするために、条件式（７）の下限値を３５．０にするのが望ましい。 Conditional expression (7) indicates an appropriate range of the difference between the Abbe numbers of the biconvex positive lens and the negative lens in the first cemented lens in the 31st lens group. If the lower limit of conditional expression (7) is exceeded, it will be difficult to satisfactorily correct lateral chromatic aberration. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (7) to 35.0.

また、本実施の形態にかかる防振機構を有するズームレンズでは、第３２レンズ群は物体側から順に、像側に凸面を向けた正レンズと、両凹形状の負レンズを有する構成が望ましい。これにより防振時の偏心収差が良好に補正できる。 In the zoom lens having the image stabilization mechanism according to the present embodiment, it is desirable that the thirty-second lens group includes a positive lens having a convex surface facing the image side and a biconcave negative lens in order from the object side. Thereby, the decentration aberration at the time of image stabilization can be corrected satisfactorily.

また、本実施の形態にかかる防振機構を有するズームレンズは、以下の条件式（８）を満足する構成が望ましい。
（８）１０．０＜ν３２Ｎ−ν３２Ｐ
但し、ν３２Ｎは第３２レンズ群中の両凹形状の負レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数、ν３２Ｐは第３２レンズ群中の正レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数である。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment satisfy the following conditional expression (8).
(8) 10.0 <ν32N−ν32P
Where ν32N is the Abbe number with respect to the d-line (wavelength 587.6 nm) of the biconcave negative lens in the 32nd lens group, and ν32P is the Abbe number with respect to the d-line (wavelength 587.6 nm) of the positive lens in the 32nd lens group. Is a number.

条件式（８）は第３２レンズ群中の正レンズと前記両凹形状の負レンズのアッベ数の差の適切な範囲を示す。条件式（８）の下限値を越えると防振時の偏心に伴う倍率色収差の補正が難しくなる。なお、本発明の効果をさらに確実にするために、条件式（８）の下限値を１２．０にするのが望ましい。 Conditional expression (8) shows an appropriate range of the difference between the Abbe numbers of the positive lens in the thirty-second lens group and the biconcave negative lens. If the lower limit of conditional expression (8) is exceeded, it will be difficult to correct lateral chromatic aberration due to decentration during image stabilization. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (8) to 12.0.

また、本実施の形態にかかる防振機構を有するズームレンズでは、第３２レンズ群は物体側から順に、像側に凸面を向けた正レンズと、両凹形状の負レンズの接合レンズからなる構成が望ましい。これにより防振時の偏心収差が良好に補正できる。 In the zoom lens having the image stabilization mechanism according to the present embodiment, the thirty-second lens group includes, in order from the object side, a cemented lens of a positive lens having a convex surface facing the image side and a biconcave negative lens. Is desirable. Thereby, the decentration aberration at the time of image stabilization can be corrected satisfactorily.

また、本実施の形態にかかる防振機構を有するズームレンズは、以下の条件式（９）を満足する構成が望ましい。
（９） −２．００＜（ｒ３２Ｒ＋ｒ３２Ｆ）／（ｒ３２Ｒ−ｒ３２Ｆ）＜−０．７０
但し、ｒ３２Ｆは第３２レンズ群の正レンズの物体側面の曲率半径であり、ｒ３２Ｒは第３２レンズ群の両凹形状の負レンズの像側面の曲率半径である。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment satisfy the following conditional expression (9).
(9) −2.00 <(r32R + r32F) / (r32R−r32F) <− 0.70
Here, r32F is the radius of curvature of the object side surface of the positive lens of the 32nd lens group, and r32R is the radius of curvature of the image side surface of the biconcave negative lens of the 32nd lens group.

条件式（９）は第３２レンズ群中の接合レンズの形状の適切な範囲を示す。条件式（９）の上限値、下限値のいずれを越えても防振時の偏心収差の発生が大きくなる。なお、本発明の効果をさらに確実にするために、条件式（９）の下限値を−１．９０にするのが望ましい。また、条件式（９）の上限値を−０．８０にするのが望ましい。 Conditional expression (9) indicates an appropriate range of the shape of the cemented lens in the thirty-second lens group. The occurrence of decentration aberrations at the time of image stabilization increases even if either the upper limit value or the lower limit value of conditional expression (9) is exceeded. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (9) to -1.90. In addition, it is desirable to set the upper limit of conditional expression (9) to −0.80.

また、本実施の形態にかかる防振機構を有するズームレンズは、以下の条件式（１０）を満足する構成が望ましい。
（１０）０．４０＜ｒ３２Ｓ／ｆ３２＜０．９０
但し、ｒ３２Ｓは第３２レンズ群の接合レンズの接合面の曲率半径であり、ｆ３２は第３２レンズ群の焦点距離である。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment has a configuration that satisfies the following conditional expression (10).
(10) 0.40 <r32S / f32 <0.90
Here, r32S is the radius of curvature of the cemented surface of the cemented lens of the 32nd lens group, and f32 is the focal length of the 32nd lens group.

条件式（１０）は第３２レンズ群中の接合レンズの接合面の曲率半径の適切な範囲を示す。条件式（１０）の上限値、下限値のいずれを越えても防振時の偏心収差の発生大きくなる。なお、本発明の効果をさらに確実にするために、条件式（１０）の下限値を０．４５にするのが望ましい。また、条件式（１０）の上限値を０．８５にするのが望ましい。 Conditional expression (10) represents an appropriate range of the radius of curvature of the cemented surface of the cemented lens in the thirty-second lens group. When the upper limit value or lower limit value of conditional expression (10) is exceeded, the occurrence of decentration aberrations during image stabilization increases. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (10) to 0.45. Moreover, it is desirable to set the upper limit of conditional expression (10) to 0.85.

また、本実施の形態にかかる防振機構を有するズームレンズは、第１レンズ群、第２レンズ群、および第３レンズ群のみからなる構成が望ましい。第３レンズ群の像側に屈折力を有するレンズ群を有しない構成とすることで、ズームレンズの構成を簡素化することができる。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment includes only the first lens group, the second lens group, and the third lens group. The configuration of the zoom lens can be simplified by adopting a configuration in which the third lens unit does not have a lens unit having refractive power on the image side.

また、本実施の形態にかかる防振機構を有するズームレンズでは、第１レンズ群は、物体側から順に、正屈折力の第１１レンズ群と、正屈折力の第１２レンズ群からなり、遠距離状態から近距離状態へのフォーカシングに際して、第１２レンズ群のみを物体方向に移動させる構成が望ましい。 In the zoom lens having the image stabilization mechanism according to the present embodiment, the first lens group includes, in order from the object side, an eleventh lens group having a positive refractive power and a twelfth lens group having a positive refractive power. In focusing from the distance state to the short distance state, it is desirable to move only the twelfth lens group in the object direction.

また、本実施の形態にかかる防振機構を有するズームレンズは、以下の条件式（１１）を満足する構成が望ましい。
（１１）１．７０＜ｆ１１／ｆ１２＜４．００
但し、ｆ１１は第１１レンズ群の焦点距離であり、ｆ１２は第１２レンズ群の焦点距離である。 In addition, it is desirable that the zoom lens having the image stabilization mechanism according to the present embodiment satisfies the following conditional expression (11).
(11) 1.70 <f11 / f12 <4.00
Here, f11 is the focal length of the eleventh lens group, and f12 is the focal length of the twelfth lens group.

条件式（１１）は第１１レンズ群と第１２レンズ群の焦点距離の比の適切な範囲を示す。条件式（１１）の上限値を越えると第１２レンズ群の屈折力が小さくなり、フォーカシングに伴う諸収差の変動が大きくなる。条件式（１１）の下限値を越えると第１１レンズ群の屈折力が小さくなり、フォーカシングに伴う第１１レンズ群の移動量が大きくなりズームレンズが大型化する。なお、本発明の効果をさらに確実にするために、条件式（１１）の下限値を１．９０にするのが望ましい。また、条件式（１１）の上限値を３．５０にするのが望ましい。 Conditional expression (11) indicates an appropriate range of the ratio of the focal lengths of the eleventh lens group and the twelfth lens group. When the upper limit value of conditional expression (11) is exceeded, the refractive power of the twelfth lens group becomes small, and the fluctuations of various aberrations accompanying focusing become large. When the lower limit of conditional expression (11) is exceeded, the refractive power of the eleventh lens group becomes small, the amount of movement of the eleventh lens group accompanying focusing increases, and the zoom lens becomes large. In order to further secure the effect of the present invention, it is desirable to set the lower limit of conditional expression (11) to 1.90. Moreover, it is desirable to set the upper limit of conditional expression (11) to 3.50.

以下に、本発明の実施の形態にかかる防振機能を有するズームレンズの各実施例に関し図面を参照しつつ説明する。 Embodiments of the zoom lens having the image stabilization function according to the embodiment of the present invention will be described below with reference to the drawings.

（第１実施例）
図１は本発明の第1実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (First embodiment)
FIG. 1 is a lens configuration diagram of a zoom lens having an image stabilization function according to the first embodiment of the present invention.

図１において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群Ｇ２と第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 1, a zoom lens having an anti-vibration function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. The first lens group G1 and the third lens group G3 move in the object direction so that the air gap between G2 and the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before the object It is the structure which moves to a direction.

第１レンズ群Ｇ１は、物体側から順に、正の屈折力を有する第１１レンズ群Ｇ１１と、正の屈折力を有する第１２レンズ群Ｇ１２からなり、第１１レンズ群Ｇ１１は両凸形状の正レンズからなり、第１２レンズ群Ｇ１２は物体側から順に、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの接合レンズからなる。 The first lens group G1 includes, in order from the object side, an eleventh lens group G11 having a positive refractive power and a twelfth lens group G12 having a positive refractive power. The eleventh lens group G11 is a positive biconvex lens. The twelfth lens group G12 includes, in order from the object side, a cemented lens of a negative meniscus lens having a convex surface facing the object side and a biconvex positive lens.

第２レンズ群Ｇ２は物体側から順に、両凹形状の負レンズと、両凹形状の負レンズと物体側に凸面を向けた正メニスカスレンズの接合レンズと、両凹形状の負レンズからなる。 The second lens group G2 includes, in order from the object side, a biconcave negative lens, a cemented lens of a biconcave negative lens, a positive meniscus lens having a convex surface facing the object side, and a biconcave negative lens.

第３レンズ群Ｇ３は物体側から順に、正の屈折力を有する第３１レンズ群Ｇ３１と、負の屈折力を有する第３２レンズ群Ｇ３２と、正の屈折力を有する第３３レンズ群Ｇ３３からなり、第３１レンズ群Ｇ３１は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと両凹形状の負レンズの第1接合レンズと、物体側に凸面を向けた正メニスカスレンズと、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの第２接合レンズからなり、第３２レンズ群Ｇ３２は物体側から順に、両凸形状の正レンズと両凹形状の負レンズの接合レンズからなり、第３３レンズ群Ｇ３３は物体側から順に、両凸形状の正レンズと、物体側に凹面を向けた負メニスカスレンズからなる。 The third lens group G3 includes, in order from the object side, a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group G33 having a positive refractive power. The thirty-first lens group G31 includes, in order from the object side, a biconvex positive lens, a first cemented lens of a biconvex positive lens and a biconcave negative lens, and a positive meniscus lens having a convex surface facing the object side. A negative meniscus lens having a convex surface facing the object side and a second cemented lens composed of a biconvex positive lens. The thirty-second lens group G32 is arranged in order from the object side, with a biconvex positive lens and a biconcave negative lens. The thirty-third lens group G33 is composed of, in order from the object side, a biconvex positive lens and a negative meniscus lens having a concave surface facing the object side.

開口絞りＳは第３１レンズ群Ｇ３１内の正メニスカスレンズと第２接合レンズの間に配置され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第３レンズ群Ｇ３と共に移動する。 The aperture stop S is disposed between the positive meniscus lens and the second cemented lens in the 31st lens group G31, and together with the 3rd lens group G3 upon zooming from the wide-angle end state (W) to the telephoto end state (T). Moving.

手ぶれ発生時には、第３２レンズ群Ｇ３２のみを光軸と直交方向に移動させることにより像面Ｉ上の像ぶれ補正をおこなう。 When camera shake occurs, image blur correction on the image plane I is performed by moving only the thirty-second lens group G32 in the direction orthogonal to the optical axis.

遠距離状態から近距離状態へのフォーカシングは、第１２レンズ群Ｇ１２を物体方向に移動させておこなう。 Focusing from the long distance state to the short distance state is performed by moving the twelfth lens group G12 in the object direction.

なお、全系の焦点距離がｆで、防振係数（ぶれ補正での移動レンズ群の移動量に対する結像面での像移動量の比）がＫのレンズで角度θの回転ぶれを補正するには、ぶれ補正用の移動レンズ群を（ｆ・tanθ）／Ｋだけ光軸と直交方向に移動させればよい。本関係は以降の他の実施例についても同様であり説明を省略する。 It should be noted that the focal length of the entire system is f, and the image blur correction coefficient (ratio of the amount of image movement on the imaging surface to the amount of movement of the moving lens group in shake correction) corrects rotational shake at an angle θ with a K lens. For this, the moving lens group for blur correction may be moved in the direction orthogonal to the optical axis by (f · tan θ) / K. This relationship is the same for the other embodiments described below, and a description thereof will be omitted.

本第１実施例の広角端状態（Ｗ）においては、防振係数は１．４７であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．２５４（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は２．６８であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．２８７（ｍｍ）である。 In the wide-angle end state (W) of the first embodiment, the image stabilization coefficient is 1.47 and the focal length is 71.40 (mm), so that it is possible to correct a rotational shake of 0.30 °. The moving amount of the thirty-second lens group G32 is 0.254 (mm). In the telephoto end state (T), since the image stabilization coefficient is 2.68 and the focal length is 294.00 (mm), the thirty-second lens group G32 for correcting a rotational blur of 0.15 °. The movement amount is 0.287 (mm).

以下の表１に、本第１実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。［全体諸元］中のｆは焦点距離、ＦＮＯはＦナンバー、２ωは画角を表す。［レンズ諸元］中、第１カラムNは物体側からのレンズ面の番号、第２カラムｒはレンズ面の曲率半径、第３カラムｄはレンズ面間隔、第４カラムνｄはｄ線（波長λ＝587.6nm）に対するアッベ数、第５カラムｎｄはｄ線（波長λ＝587.6nm）に対する屈折率をそれぞれ表す。なお、第２カラムｒにおいて「∞」は平面を表し、第５カラムｎｄにおいて空気の屈折率１．００００００は記載を省略している。［可変間隔データー］には、焦点距離ｆと、可変間隔の値と、バックフォーカスB.f.をそれぞれ示す。［フォーカシング移動量］中、δ12は、撮影距離1500(mm)のときの第１２レンズ群Ｇ１２の物体方向へのフォーカシング移動量の値を示す。［条件式対応値］は各条件式の値をそれぞれ表す。 Table 1 below lists values of specifications of the zoom lens having the image stabilization function according to the first example. In [Overall Specifications], f represents a focal length, FNO represents an F number, and 2ω represents an angle of view. In the [lens specifications], the first column N is the lens surface number from the object side, the second column r is the radius of curvature of the lens surface, the third column d is the lens surface interval, and the fourth column νd is d-line (wavelength). The Abbe number for λ = 587.6 nm and the fifth column nd represent the refractive index for the d-line (wavelength λ = 587.6 nm). In the second column r, “∞” represents a plane, and the refractive index of air in the fifth column nd is omitted. [Variable interval data] indicates the focal length f, the value of the variable interval, and the back focus B.f. In [Focusing Movement Amount], δ12 indicates the value of the focusing movement amount in the object direction of the twelfth lens group G12 when the photographing distance is 1500 (mm). [Conditional Expression Corresponding Value] represents the value of each conditional expression.

なお、以下の全ての諸元の値において、掲載されている焦点距離ｆ、曲率半径ｒ、レンズ面間隔ｄ、その他の長さ等は、特記の無い場合一般に「ｍｍ」が使われるが、光学系では比例拡大または比例縮小しても同等の光学性能が得られるので、これに限られるものではない。また、単位は「ｍｍ」に限定されることなく他の適当な単位を用いることもできる。さらにこれらの符号は、以降の他の実施例においても同様であり説明を省略する。 In all the following values, “mm” is generally used as the focal length f, radius of curvature r, lens surface interval d, and other lengths unless otherwise specified. In the system, even if proportional expansion or proportional reduction is performed, the same optical performance can be obtained. Further, the unit is not limited to “mm”, and other appropriate units may be used. Furthermore, these symbols are the same in the other embodiments below, and the description thereof is omitted.

（表１）
［全体諸元］
f=71.40〜134.90〜294.00
FNO=4.10〜4.28〜5.79
2ω=22.50〜11.75〜5.44°

［レンズ諸元］
N r d νd nd
1 485.2517 3.3856 64.14 1.516330
2 -485.2517 (d 2)

3 74.6948 2.5000 26.52 1.761821
4 50.2473 8.5338 70.23 1.487490
5 -397.6433 (d 5)

6 -445.5319 1.4000 49.60 1.772499
7 121.5057 1.7612
8 -139.8007 1.4000 49.60 1.772499
9 31.4033 4.4544 23.78 1.846660
10 195.1690 2.3037
11 -63.0020 1.4000 49.60 1.772499
12 863.7974 (d12)

13 209.2396 3.4957 51.47 1.733997
14 -78.5539 0.2000
15 53.3010 6.1013 81.54 1.496999
16 -47.6905 1.4000 34.97 1.800999
17 743.9564 0.2000
18 31.2964 4.0974 60.64 1.603112
19 86.8951 12.4001
20 ∞ 1.0000 開口絞りＳ
21 67.3937 1.3000 23.78 1.846660
22 26.7354 5.4922 70.23 1.487490
23 -88.9999 5.5185

24 1974.4906 3.7052 26.52 1.761821
25 -26.6771 1.2000 49.60 1.772499
26 26.6771 3.2607

27 29.4872 3.9533 34.47 1.639799
28 -93.8522 2.2384
29 -21.9460 1.2000 49.60 1.772499
30 -59.2566 (B.f.)

［可変間隔データー］
広角端状態中間焦点距離状態望遠端状態
f 71.40000 134.90024 294.00000
d2 16.01875 16.01875 16.01875
d5 2.00000 31.41839 42.84564
d12 32.45495 19.43707 2.00000
B.f. 40.62478 47.41150 80.62502

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.40000 134.90024 294.00000
δ12 13.70747 13.96627 14.28274

［条件式対応値］
（１）１．７７３
（２） −０．４６３
（３）０．５００
（４） −０．９６８
（５）０．３０６
（６）０．３０４
（７）４６．５７
（８）２３．０８
（９） −１．０２７
（１０）０．７７２
（１１）２．８１９
(Table 1)
[Overall specifications]
f = 71.40-134.90-294.00
FNO = 4.10〜4.28〜5.79
2ω = 22.50〜11.75〜5.44 °

[Lens specifications]
N rd νd nd
1 485.2517 3.3856 64.14 1.516330
2 -485.2517 (d 2)

3 74.6948 2.5000 26.52 1.761821
4 50.2473 8.5338 70.23 1.487490
5 -397.6433 (d 5)

6 -445.5319 1.4000 49.60 1.772499
7 121.5057 1.7612
8 -139.8007 1.4000 49.60 1.772499
9 31.4033 4.4544 23.78 1.846660
10 195.1690 2.3037
11 -63.0020 1.4000 49.60 1.772499
12 863.7974 (d12)

13 209.2396 3.4957 51.47 1.733997
14 -78.5539 0.2000
15 53.3010 6.1013 81.54 1.496999
16 -47.6905 1.4000 34.97 1.800999
17 743.9564 0.2000
18 31.2964 4.0974 60.64 1.603112
19 86.8951 12.4001
20 ∞ 1.0000 Aperture stop S
21 67.3937 1.3000 23.78 1.846660
22 26.7354 5.4922 70.23 1.487490
23 -88.9999 5.5185

24 1974.4906 3.7052 26.52 1.761821
25 -26.6771 1.2000 49.60 1.772499
26 26.6771 3.2607

27 29.4872 3.9533 34.47 1.639799
28 -93.8522 2.2384
29 -21.9460 1.2000 49.60 1.772499
30 -59.2566 (Bf)

[Variable interval data]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40000 134.90024 294.00000
d2 16.01875 16.01875 16.01875
d5 2.00000 31.41839 42.84564
d12 32.45495 19.43707 2.00000
Bf 40.62478 47.41150 80.62502

[Focusing distance]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40000 134.90024 294.00000
δ12 13.70747 13.96627 14.28274

[Conditional expression values]
(1) 1.773
(2) -0.463
(3) 0.500
(4) -0.968
(5) 0.306
(6) 0.304
(7) 46.57
(8) 23.08
(9) -1.027
(10) 0.772
(11) 2.819

図２は、本第１実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図３は本第１実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図４は本第１実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 2A and 2B show various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the first example. FIG. 2A is an aberration diagram in the infinite state, and FIG. 2B is in the infinite state. The meridional transverse aberration diagram when the shake correction for the 0.3 ° rotational shake is performed is shown. FIG. 3 is a diagram illustrating various aberrations in the intermediate focal length state of the zoom lens having the image stabilization function according to the first example. 4A and 4B show various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the first example. FIG. 4A is an aberration diagram in the infinity state, and FIG. 4B is 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

また、各収差図においてＦＮＯはＦナンバー、Ｙは像高、ｄはｄ線（波長λ＝587.6nm）、及びｇはｇ線（波長λ＝435.8nm）をそれぞれ示す。なお、これらの符号は、以降の他の実施例においても同様であり説明を省略する。 In each aberration diagram, FNO is the F number, Y is the image height, d is the d-line (wavelength λ = 587.6 nm), and g is the g-line (wavelength λ = 435.8 nm). Note that these symbols are the same in the other embodiments, and the description thereof is omitted.

各収差図から、本第１実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From the respective aberration diagrams, it is clear that the zoom lens having the image stabilization function according to the first example has excellent aberrations and excellent imaging performance.

（第２実施例）
図５は本発明の第２実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (Second embodiment)
FIG. 5 is a lens configuration diagram of a zoom lens having an image stabilization function according to the second embodiment of the present invention.

図５において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群とＧ２第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 5, the zoom lens having the image stabilization function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. And G2, the first lens group G1 and the third lens group G3 move in the object direction so that the air gap between the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before moving the object It is the structure which moves to a direction.

第１レンズ群Ｇ１は物体側から順に、正の屈折力を有する第１１レンズ群Ｇ１１と、正の屈折力を有する第１２レンズ群Ｇ１２からなり、第１１レンズ群Ｇ１１は両凸形状の正レンズからなり、第１２レンズ群Ｇ１２は物体側から順に、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの接合レンズからなる。 The first lens group G1 includes, in order from the object side, an eleventh lens group G11 having a positive refractive power and a twelfth lens group G12 having a positive refractive power. The eleventh lens group G11 is a biconvex positive lens. The twelfth lens group G12 includes, in order from the object side, a cemented lens of a negative meniscus lens having a convex surface directed toward the object side and a biconvex positive lens.

第３レンズ群Ｇ３は物体側から順に、正の屈折力を有する第３１レンズ群Ｇ３１と、負の屈折力を有する第３２レンズ群Ｇ３２と、正の屈折力を有する第３３レンズ群Ｇ３３からなり、第３１レンズ群Ｇ３１は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと両凹形状の負レンズの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの第２接合レンズからなり、第３２レンズ群Ｇ３２は物体側から順に、両凸形状の正レンズと両凹形状の負レンズの接合レンズからなり、第３３レンズ群Ｇ３３は物体側から順に、両凸形状の正レンズと、物体側に凹面を向けた負メニスカスレンズからなる。 The third lens group G3 includes, in order from the object side, a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group G33 having a positive refractive power. The thirty-first lens group G31 includes, in order from the object side, a biconvex positive lens, a first cemented lens having a biconvex positive lens and a biconcave negative lens, and a positive meniscus lens having a convex surface facing the object side. A negative meniscus lens having a convex surface facing the object side and a second cemented lens composed of a biconvex positive lens. The thirty-second lens group G32 is arranged in order from the object side, with a biconvex positive lens and a biconcave negative lens. The thirty-third lens group G33 is composed of, in order from the object side, a biconvex positive lens and a negative meniscus lens having a concave surface facing the object side.

本第２実施例の広角端状態（Ｗ）においては、防振係数は１．０２であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．３６７（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は１．７０であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．４５３（ｍｍ）である。 In the wide-angle end state (W) of the second embodiment, the image stabilization coefficient is 1.02 and the focal length is 71.40 (mm). Therefore, the rotational blur of 0.30 ° is corrected. The moving amount of the thirty-second lens group G32 is 0.367 (mm). In the telephoto end state (T), since the image stabilization coefficient is 1.70 and the focal length is 294.00 (mm), the thirty-second lens group G32 for correcting rotational blur of 0.15 °. The amount of movement is 0.453 (mm).

以下の表２に、本第２実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。 Table 2 below lists values of specifications of the zoom lens having the image stabilization function according to the second example.

（表２）
［全体諸元］
f=71.40〜134.90〜294.00
FNO=4.10〜4.28〜5.79
2ω=22.51〜11.74〜5.43°

［レンズ諸元］
N r d νd nd
1 494.1160 3.3593 64.14 1.516330
2 -494.1160 (d 2)

3 74.6142 2.5000 26.52 1.761821
4 50.2492 8.5170 70.23 1.487490
5 -409.6962 (d 5)

6 -572.2854 1.4000 49.60 1.772499
7 118.2999 1.5934
8 -150.1597 1.4000 49.60 1.772499
9 28.9590 4.2332 23.78 1.846660
10 159.4762 2.3641
11 -56.2166 1.4000 49.60 1.772499
12 737.8222 (d12)

13 255.4424 3.4925 51.47 1.733997
14 -65.2491 0.2000
15 55.4617 5.8677 81.54 1.496999
16 -42.2335 1.4000 34.97 1.800999
17 391.1593 0.2000
18 29.8308 4.2307 60.64 1.603112
19 109.3078 9.9568
20 ∞ 1.0000 開口絞りＳ
21 111.2314 1.3000 23.78 1.846660
22 34.2913 3.8688 70.23 1.487490
23 -116.1639 3.0066

24 131.0022 2.6204 25.42 1.805181
25 -42.8081 1.2000 39.58 1.804398
26 35.6448 6.4837

27 44.2831 3.9886 31.07 1.688931
28 -53.8284 2.7522
29 -23.7792 1.2000 49.60 1.772499
30 -254.9277 (B.f.)

［可変間隔データー］
広角端状態中間焦点距離状態望遠端状態
f 71.40000 134.90024 294.00000
d2 16.22141 16.22141 16.22141
d5 2.00000 33.62022 46.49954
d12 29.66797 18.37991 2.00000
B.f. 47.57563 53.66382 85.74428

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.40000 134.90024 294.00000
δ12 13.90148 14.20164 13.03481

［条件式対応値］
（１）１．７８７
（２） −０．４３６
（３）０．５００
（４） −１．７３８
（５）０．０６３
（６）０．３０４
（７）４６．５７
（８）１４．１６
（９） −１．７４８
（１０）０．６９０
（１１）２．８６０
(Table 2)
[Overall specifications]
f = 71.40-134.90-294.00
FNO = 4.10〜4.28〜5.79
2ω = 22.51〜11.74〜5.43 °

[Lens specifications]
N rd νd nd
1 494.1160 3.3593 64.14 1.516330
2 -494.1160 (d 2)

3 74.6142 2.5000 26.52 1.761821
4 50.2492 8.5170 70.23 1.487490
5 -409.6962 (d 5)

6 -572.2854 1.4000 49.60 1.772499
7 118.2999 1.5934
8 -150.1597 1.4000 49.60 1.772499
9 28.9590 4.2332 23.78 1.846660
10 159.4762 2.3641
11 -56.2166 1.4000 49.60 1.772499
12 737.8222 (d12)

13 255.4424 3.4925 51.47 1.733997
14 -65.2491 0.2000
15 55.4617 5.8677 81.54 1.496999
16 -42.2335 1.4000 34.97 1.800999
17 391.1593 0.2000
18 29.8308 4.2307 60.64 1.603112
19 109.3078 9.9568
20 ∞ 1.0000 Aperture stop S
21 111.2314 1.3000 23.78 1.846660
22 34.2913 3.8688 70.23 1.487490
23 -116.1639 3.0066

24 131.0022 2.6204 25.42 1.805181
25 -42.8081 1.2000 39.58 1.804398
26 35.6448 6.4837

27 44.2831 3.9886 31.07 1.688931
28 -53.8284 2.7522
29 -23.7792 1.2000 49.60 1.772499
30 -254.9277 (Bf)

[Variable interval data]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40000 134.90024 294.00000
d2 16.22141 16.22141 16.22141
d5 2.00000 33.62022 46.49954
d12 29.66797 18.37991 2.00000
Bf 47.57563 53.66382 85.74428

[Focusing distance]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40000 134.90024 294.00000
δ12 13.90148 14.20164 13.03481

[Conditional expression values]
(1) 1.787
(2) -0.436
(3) 0.500
(4) -1.738
(5) 0.063
(6) 0.304
(7) 46.57
(8) 14.16
(9) -1.748
(10) 0.690
(11) 2.860

図６は本第２実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図７は本第２実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図８は本第２実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 FIG. 6 shows various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the second example. FIG. 6A is an aberration diagram in the infinity state, and FIG. 6B is 0 in the infinity state. 3 shows a meridional transverse aberration diagram when shake correction is performed for rotational shake of 3 °. FIG. 7 is a diagram illustrating various aberrations in the intermediate focal length state of the zoom lens having the image stabilization function according to the second example. 8A and 8B show various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the second embodiment. FIG. 8A shows an aberration diagram in the infinity state, and FIG. 8B shows 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

各収差図から、本第２実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From the respective aberration diagrams, it is clear that the zoom lens having the image stabilization function according to the second example has excellent image forming performance with various aberrations corrected well.

（第３実施例）
図９は本発明の第３実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (Third embodiment)
FIG. 9 is a lens configuration diagram of a zoom lens having an image stabilization function according to the third embodiment of the present invention.

図９において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群Ｇ２と第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 9, the zoom lens having the image stabilization function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. The first lens group G1 and the third lens group G3 move in the object direction so that the air gap between G2 and the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before the object It is the structure which moves to a direction.

第３レンズ群Ｇ３は物体側から順に、正の屈折力を有する第３１レンズ群Ｇ３１と、負の屈折力を有する第３２レンズ群Ｇ３２と、負の屈折力を有する第３３レンズ群Ｇ３３からなり、第３１レンズ群Ｇ３１は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと両凹形状の負レンズの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの第２接合レンズからなり、第３２レンズ群Ｇ３２は物体側から順に、両凸形状の正レンズと両凹形状の負レンズの接合レンズからなり、第３３レンズ群Ｇ３３は物体側から順に、両凸形状の正レンズと、物体側に凹面を向けた負メニスカスレンズからなる。 The third lens group G3 includes, in order from the object side, a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group G33 having a negative refractive power. The thirty-first lens group G31 includes, in order from the object side, a biconvex positive lens, a first cemented lens having a biconvex positive lens and a biconcave negative lens, and a positive meniscus lens having a convex surface facing the object side. A negative meniscus lens having a convex surface facing the object side and a second cemented lens composed of a biconvex positive lens. The thirty-second lens group G32 is arranged in order from the object side, with a biconvex positive lens and a biconcave negative lens. The thirty-third lens group G33 is composed of, in order from the object side, a biconvex positive lens and a negative meniscus lens having a concave surface facing the object side.

開口絞りＳは第３１レンズ群Ｇ３１の物体側に配置され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第３レンズ群Ｇ３と共に移動する。 The aperture stop S is disposed on the object side of the 31st lens group G31, and moves together with the third lens group G3 during zooming from the wide-angle end state (W) to the telephoto end state (T).

本第３実施例の広角端状態（Ｗ）においては、防振係数は１．２０であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．３１２（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は１．８０であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．４２８（ｍｍ）である。 In the wide-angle end state (W) of the third embodiment, the image stabilization coefficient is 1.20 and the focal length is 71.40 (mm), so that the rotational shake of 0.30 ° is corrected. The moving amount of the thirty-second lens group G32 is 0.312 (mm). In the telephoto end state (T), since the image stabilization coefficient is 1.80 and the focal length is 294.00 (mm), the thirty-second lens group G32 for correcting rotational blur of 0.15 °. The movement amount is 0.428 (mm).

以下の表３に、本第３実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。 Table 3 below lists values of specifications of the zoom lens having the image stabilization function according to the third example.

（表３）
［全体諸元］
f=71.40〜134.90〜294.00
FNO=4.11〜4.34〜5.80
2ω=22.59〜11.77〜5.43°

［レンズ諸元］
N r d νd nd
1 470.2040 3.4304 64.14 1.516330
2 -470.2040 (d 2)

3 66.8958 2.5000 26.52 1.761821
4 45.5528 9.0276 70.23 1.487490
5 -449.7939 (d 5)

6 -402.2639 1.4000 49.60 1.772499
7 87.3056 1.8292
8 -109.2528 1.4000 49.60 1.772499
9 27.2177 4.2493 23.78 1.846660
10 238.8473 2.0018
11 -54.2941 1.4000 49.60 1.772499
12 405.9871 (d12)

13 ∞ 1.0000 開口絞りＳ
14 202.2803 3.3407 51.47 1.733997
15 -69.7514 0.2000
16 49.4756 6.2066 81.54 1.496999
17 -36.3641 1.4000 34.97 1.800999
18 417.1479 0.2000
19 30.2273 4.0221 60.64 1.603112
20 106.7084 4.7396
21 66.4249 1.3000 23.78 1.846660
22 38.1999 4.3369 70.23 1.487490
23 -91.4989 3.0000

24 195.2029 2.8722 25.42 1.805181
25 -40.8879 1.2000 39.58 1.804398
26 39.1832 12.6471

27 71.7192 2.3982 31.07 1.688931
28 -76.4137 1.3004
29 -21.7636 1.2000 49.60 1.772499
30 -61.3686 (B.f.)

［可変間隔データー］
広角端状態中間焦点距離状態望遠端状態
f 71.40008 134.89998 294.00000
d2 14.05307 14.05307 14.05307
d5 2.00000 33.03379 46.59044
d12 25.89044 16.74440 2.00000
B.f. 54.45490 59.34588 88.75509

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.40008 134.89998 294.00000
δ12 11.82193 12.07969 12.36388

［条件式対応値］
（１）１．６５３
（２） −０．３７９
（３）０．４９１
（４） −１．７６２
（５） −０．１２０
（６）０．３０４
（７）４６．５７
（８）１３．９３
（９） −１．５０２
（１０）０．６６２
（１１）２．９６０
(Table 3)
[Overall specifications]
f = 71.40-134.90-294.00
FNO = 4.11 ~ 4.34〜5.80
2ω = 22.59〜11.77〜5.43 °

[Lens specifications]
N rd νd nd
1 470.2040 3.4304 64.14 1.516330
2 -470.2040 (d 2)

3 66.8958 2.5000 26.52 1.761821
4 45.5528 9.0276 70.23 1.487490
5 -449.7939 (d 5)

6 -402.2639 1.4000 49.60 1.772499
7 87.3056 1.8292
8 -109.2528 1.4000 49.60 1.772499
9 27.2177 4.2493 23.78 1.846660
10 238.8473 2.0018
11 -54.2941 1.4000 49.60 1.772499
12 405.9871 (d12)

13 ∞ 1.0000 Aperture stop S
14 202.2803 3.3407 51.47 1.733997
15 -69.7514 0.2000
16 49.4756 6.2066 81.54 1.496999
17 -36.3641 1.4000 34.97 1.800999
18 417.1479 0.2000
19 30.2273 4.0221 60.64 1.603112
20 106.7084 4.7396
21 66.4249 1.3000 23.78 1.846660
22 38.1999 4.3369 70.23 1.487490
23 -91.4989 3.0000

24 195.2029 2.8722 25.42 1.805181
25 -40.8879 1.2000 39.58 1.804398
26 39.1832 12.6471

27 71.7192 2.3982 31.07 1.688931
28 -76.4137 1.3004
29 -21.7636 1.2000 49.60 1.772499
30 -61.3686 (Bf)

[Variable interval data]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40008 134.89998 294.00000
d2 14.05307 14.05307 14.05307
d5 2.00000 33.03379 46.59044
d12 25.89044 16.74440 2.00000
Bf 54.45490 59.34588 88.75509

[Focusing distance]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40008 134.89998 294.00000
δ12 11.82193 12.07969 12.36388

[Conditional expression values]
(1) 1.653
(2) -0.379
(3) 0.491
(4) -1.762
(5) -0.120
(6) 0.304
(7) 46.57
(8) 13.93
(9) -1.502
(10) 0.662
(11) 2.960

図１０は本第３実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図１１は本第３実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図１２は本第３実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 10A and 10B show various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the third example. FIG. 10A is an aberration diagram in the infinity state, and FIG. 10B is 0 in the infinity state. 3 shows a meridional transverse aberration diagram when shake correction is performed for rotational shake of 3 °. FIG. 11 is a diagram illustrating various aberrations in the intermediate focal length state of the zoom lens having the image stabilization function according to the third example. FIG. 12 shows various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the third example. (A) shows an aberration diagram in the infinity state, and (b) shows 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

各収差図から、本第３実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From each aberration diagram, it is apparent that the zoom lens having the image stabilization function according to the third example has excellent aberrations and excellent imaging performance.

（第４実施例）
図１３は本発明の第４実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (Fourth embodiment)
FIG. 13 is a lens configuration diagram of a zoom lens having an image stabilization function according to the fourth example of the present invention.

図１３において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群Ｇ２と第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 13, the zoom lens having the image stabilization function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. The first lens group G1 and the third lens group G3 move in the object direction so that the air gap between G2 and the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before the object It is the structure which moves to a direction.

開口絞りＳは第３２レンズ群Ｇ３２と第３３レンズ群Ｇ３３の間に配置され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第３レンズ群Ｇ３と共に移動する。 The aperture stop S is disposed between the thirty-second lens group G32 and the thirty-third lens group G33, and moves together with the third lens group G3 upon zooming from the wide-angle end state (W) to the telephoto end state (T).

本第４実施例の広角端状態（Ｗ）においては、防振係数は１．２２であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．３０６（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は１．７７であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．４３５（ｍｍ）である。 In the wide-angle end state (W) of the fourth embodiment, the image stabilization coefficient is 1.22 and the focal length is 71.40 (mm), so that the rotational shake of 0.30 ° is corrected. The moving amount of the thirty-second lens group G32 is 0.306 (mm). In the telephoto end state (T), since the image stabilization coefficient is 1.77 and the focal length is 294.00 (mm), the thirty-second lens group G32 for correcting rotational blur of 0.15 °. The amount of movement is 0.435 (mm).

以下の表４に、本第４実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。 Table 4 below lists values of specifications of the zoom lens having the image stabilization function according to the fourth example.

（表４）
［全体諸元］
f=71.40〜134.90〜294.00
FNO=3.99〜4.07〜5.80
2ω=22.60〜11.74〜5.43°

［レンズ諸元］
N r d νd nd
1 435.2356 3.5738 64.14 1.516330
2 -435.2356 (d 2)

3 65.0718 2.5000 26.52 1.761821
4 44.2697 9.2741 70.23 1.487490
5 -463.1280 (d 5)

6 -312.4330 1.4000 49.60 1.772499
7 89.0862 1.9706
8 -89.6775 1.4000 49.60 1.772499
9 27.3391 4.2567 23.78 1.846660
10 234.4984 1.8028
11 -63.7183 1.4000 49.60 1.772499
12 421.2241 (d12)

13 128.9757 3.6394 49.34 1.743198
14 -65.2871 0.2000
15 45.1211 6.2141 81.54 1.496999
16 -34.9173 1.4000 33.89 1.803840
17 179.4381 0.2000
18 28.1967 3.1441 61.13 1.589130
19 51.4191 3.2906
20 61.2265 1.3000 23.78 1.846660
21 41.2033 4.3881 70.23 1.487490
22 -71.4444 3.0000

23 2400.8873 2.8952 25.42 1.805181
24 -34.5253 1.2000 40.10 1.762001
25 43.6975 3.0000

26 ∞ 10.7331 開口絞りＳ
27 109.9589 2.6855 33.79 1.647689
28 -56.7968 1.6430
29 -21.1003 1.2000 50.23 1.719995
30 -54.1165 (B.f.)

［可変間隔データー］
広角端状態中間焦点距離状態望遠端状態
f 71.40000 134.90000 294.00000
d2 13.51363 13.51363 13.51363
d5 2.06047 33.56902 45.03690
d12 27.97643 18.33799 2.00000
B.f. 55.73858 57.28561 87.73867

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.40000 134.90000 294.00000
δ12 11.13016 11.34131 11.58141

［条件式対応値］
（１）１．６００
（２） −０．３８２
（３）０．５１２
（４） −１．７３０
（５） −０．０９９
（６）０．３０７
（７）４７．６５
（８）１４．６８
（９） −１．０３７
（１０）０．５４６
（１１）２．７９１
(Table 4)
[Overall specifications]
f = 71.40-134.90-294.00
FNO = 3.99〜4.07〜5.80
2ω = 22.60〜11.74〜5.43 °

[Lens specifications]
N rd νd nd
1 435.2356 3.5738 64.14 1.516330
2 -435.2356 (d 2)

3 65.0718 2.5000 26.52 1.761821
4 44.2697 9.2741 70.23 1.487490
5 -463.1280 (d 5)

6 -312.4330 1.4000 49.60 1.772499
7 89.0862 1.9706
8 -89.6775 1.4000 49.60 1.772499
9 27.3391 4.2567 23.78 1.846660
10 234.4984 1.8028
11 -63.7183 1.4000 49.60 1.772499
12 421.2241 (d12)

13 128.9757 3.6394 49.34 1.743198
14 -65.2871 0.2000
15 45.1211 6.2141 81.54 1.496999
16 -34.9173 1.4000 33.89 1.803840
17 179.4381 0.2000
18 28.1967 3.1441 61.13 1.589130
19 51.4191 3.2906
20 61.2265 1.3000 23.78 1.846660
21 41.2033 4.3881 70.23 1.487490
22 -71.4444 3.0000

23 2400.8873 2.8952 25.42 1.805181
24 -34.5253 1.2000 40.10 1.762001
25 43.6975 3.0000

26 ∞ 10.7331 Aperture stop S
27 109.9589 2.6855 33.79 1.647689
28 -56.7968 1.6430
29 -21.1003 1.2000 50.23 1.719995
30 -54.1165 (Bf)

[Variable interval data]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40000 134.90000 294.00000
d2 13.51363 13.51363 13.51363
d5 2.06047 33.56902 45.03690
d12 27.97643 18.33799 2.00000
Bf 55.73858 57.28561 87.73867

[Focusing distance]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40000 134.90000 294.00000
δ12 11.13016 11.34131 11.58141

[Conditional expression values]
(1) 1.600
(2) -0.382
(3) 0.512
(4) -1.730
(5) -0.099
(6) 0.307
(7) 47.65
(8) 14.68
(9) -1.037
(10) 0.546
(11) 2.791

図１４は本第４実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図１５は本第４実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図１６は本第４実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 14A and 14B show various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the fourth example. FIG. 14A is an aberration diagram in the infinity state, and FIG. 14B is 0 in the infinity state. 3 shows a meridional transverse aberration diagram when shake correction is performed for rotational shake of 3 °. FIG. 15 is a diagram illustrating various aberrations in the intermediate focal length state of the zoom lens having the image stabilization function according to the fourth example. FIG. 16 shows various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the fourth example. (A) shows an aberration diagram in the infinity state, and (b) shows 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

各収差図から、本第４実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From the respective aberration diagrams, it is clear that the zoom lens having the image stabilization function according to the fourth example has excellent aberrations and excellent imaging performance.

（第５実施例）
図１７は本発明の第５実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (5th Example)
FIG. 17 is a lens configuration diagram of a zoom lens having an image stabilization function according to Example 5 of the present invention.

図１７において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群Ｇ２と第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 17, the zoom lens having the image stabilization function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. The first lens group G1 and the third lens group G3 move in the object direction so that the air gap between G2 and the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before the object It is the structure which moves to a direction.

第３レンズ群Ｇ３は物体側から順に、正の屈折力を有する第３１レンズ群Ｇ３１と、負の屈折力を有する第３２レンズ群Ｇ３２と、負の屈折力を有する第３３レンズ群Ｇ３３からなり、第３１レンズ群Ｇ３１は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと負メニスカスレンズの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの第２接合レンズからなり、第３２レンズ群Ｇ３２は物体側から順に、両凸形状の正レンズと両凹形状の負レンズの接合レンズからなり、第３３レンズ群Ｇ３３は物体側から順に、両凸形状の正レンズと、物体側に凹面を向けた負メニスカスレンズからなる。 The third lens group G3 includes, in order from the object side, a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group G33 having a negative refractive power. The thirty-first lens group G31 includes, in order from the object side, a biconvex positive lens, a first cemented lens of a biconvex positive lens and a negative meniscus lens, a positive meniscus lens having a convex surface facing the object side, A negative meniscus lens having a convex surface facing the second side and a biconvex positive lens second cemented lens. The thirty-second lens group G32 is composed of a biconvex positive lens and a biconcave negative lens in order from the object side. The thirty-third lens group G33 includes, in order from the object side, a biconvex positive lens and a negative meniscus lens having a concave surface facing the object side.

開口絞りＳは第３１レンズ群Ｇ３１と第３２レンズ群Ｇ３２の間に配置され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第３レンズ群Ｇ３と共に移動する。 The aperture stop S is disposed between the thirty-first lens group G31 and the thirty-second lens group G32, and moves together with the third lens group G3 upon zooming from the wide-angle end state (W) to the telephoto end state (T).

本第５実施例の広角端状態（Ｗ）においては、防振係数は１．２０であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．３１２（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は１．７５であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．４４０（ｍｍ）である。 In the wide-angle end state (W) of the fifth embodiment, the image stabilization coefficient is 1.20 and the focal length is 71.40 (mm), so that the rotational shake of 0.30 ° is corrected. The moving amount of the thirty-second lens group G32 is 0.312 (mm). In the telephoto end state (T), since the image stabilization coefficient is 1.75 and the focal length is 294.00 (mm), the thirty-second lens group G32 for correcting rotational blur of 0.15 °. The amount of movement is 0.440 (mm).

以下の表５に、本第５実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。 Table 5 below lists values of specifications of the zoom lens having the image stabilization function according to the fifth example.

（表５）
［全体諸元］
f=71.40〜134.91〜294.00
FNO=4.07〜4.21〜5.80
2ω=22.52〜11.72〜5.42°

［レンズ諸元］
N r d νd nd
1 469.3093 3.4317 64.14 1.516330
2 -469.3093 (d 2)

3 70.6717 2.5000 26.52 1.761821
4 47.9817 8.6474 70.23 1.487490
5 -513.7728 (d 5)

6 -449.1622 1.4000 49.60 1.772499
7 121.4673 1.3256
8 -170.8246 1.4000 49.60 1.772499
9 25.7253 4.1467 23.78 1.846660
10 114.2679 2.1893
11 -58.0505 1.4000 49.60 1.772499
12 427.6062 (d12)

13 184.6338 3.0978 52.64 1.740999
14 -77.4294 0.2000
15 60.5320 6.2886 81.54 1.496999
16 -38.0057 1.4000 34.97 1.800999
17 -2769.6388 0.2000
18 29.4015 3.3326 60.64 1.603112
19 65.7395 7.2941
20 48.4532 1.3000 23.78 1.846660
21 28.7258 4.3311 70.23 1.487490
22 -116.3213 1.4000
23 ∞ 3.6000 開口絞りＳ

24 192.1240 2.6534 25.42 1.805181
25 -39.8609 1.2000 39.58 1.804398
26 36.5000 8.1971

27 74.0134 3.9109 31.07 1.688931
28 -49.3643 1.8413
29 -22.3167 1.2000 49.60 1.772499
30 -89.5841 (B.f.)

［可変間隔データー］
広角端状態中間焦点距離状態望遠端状態
f 71.40015 134.90898 294.00094
d2 15.55650 15.55650 15.55650
d5 2.00494 36.17786 49.70524
d12 29.70030 19.40726 2.00000
B.f. 51.85087 54.13440 80.85104

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.40015 134.90898 294.00094
δ12 13.28566 13.56940 13.82723

［条件式対応値］
（１）１．７４３
（２） −０．４１４
（３）０．５０６
（４） −１．５６９
（５） −０．０４８
（６）０．３０４
（７）４６．５７
（８）１４．１６
（９） −１．４６９
（１０）０．７０３
（１１）２．７５６
(Table 5)
[Overall specifications]
f = 71.40-134.91-294.00
FNO = 4.07 ~ 4.21 ~ 5.80
2ω = 22.52〜11.72〜5.42 °

[Lens specifications]
N rd νd nd
1 469.3093 3.4317 64.14 1.516330
2 -469.3093 (d 2)

3 70.6717 2.5000 26.52 1.761821
4 47.9817 8.6474 70.23 1.487490
5 -513.7728 (d 5)

6 -449.1622 1.4000 49.60 1.772499
7 121.4673 1.3256
8 -170.8246 1.4000 49.60 1.772499
9 25.7253 4.1467 23.78 1.846660
10 114.2679 2.1893
11 -58.0505 1.4000 49.60 1.772499
12 427.6062 (d12)

13 184.6338 3.0978 52.64 1.740999
14 -77.4294 0.2000
15 60.5320 6.2886 81.54 1.496999
16 -38.0057 1.4000 34.97 1.800999
17 -2769.6388 0.2000
18 29.4015 3.3326 60.64 1.603112
19 65.7395 7.2941
20 48.4532 1.3000 23.78 1.846660
21 28.7258 4.3311 70.23 1.487490
22 -116.3213 1.4000
23 ∞ 3.6000 Aperture stop S

24 192.1240 2.6534 25.42 1.805181
25 -39.8609 1.2000 39.58 1.804398
26 36.5000 8.1971

27 74.0134 3.9109 31.07 1.688931
28 -49.3643 1.8413
29 -22.3167 1.2000 49.60 1.772499
30 -89.5841 (Bf)

[Variable interval data]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40015 134.90898 294.00094
d2 15.55650 15.55650 15.55650
d5 2.00494 36.17786 49.70524
d12 29.70030 19.40726 2.00000
Bf 51.85087 54.13440 80.85104

[Focusing distance]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40015 134.90898 294.00094
δ12 13.28566 13.56940 13.82723

[Conditional expression values]
(1) 1.743
(2) -0.414
(3) 0.506
(4) -1.569
(5) -0.048
(6) 0.304
(7) 46.57
(8) 14.16
(9) -1.469
(10) 0.703
(11) 2.756

図１８は本第５実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図１９は本第５実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図２０は本第５実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 18A and 18B show aberration diagrams of the zoom lens having the image stabilization function according to the fifth example in the wide-angle end state. FIG. 18A is an aberration diagram in the infinity state, and FIG. 18B is 0 in the infinity state. 3 shows a meridional transverse aberration diagram when shake correction is performed for rotational shake of 3 °. FIG. 19 is a diagram illustrating various aberrations in the intermediate focal length state of the zoom lens having the image stabilization function according to the fifth example. FIG. 20 shows various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the fifth example. FIG. 20A is an aberration diagram in the infinity state, and FIG. 20B is 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

各収差図から、本第５実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From the respective aberration diagrams, it is clear that the zoom lens having the image stabilization function according to the fifth example has excellent aberrations and excellent imaging performance.

（第６実施例）
図２１は本発明の第６実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (Sixth embodiment)
FIG. 21 is a lens configuration diagram of a zoom lens having an image stabilization function according to Example 6 of the present invention.

図２１において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群Ｇ２と第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 21, the zoom lens having the image stabilization function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. The first lens group G1 and the third lens group G3 move in the object direction so that the air gap between G2 and the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before the object It is the structure which moves to a direction.

第３レンズ群Ｇ３は物体側から順に、正の屈折力を有する第３１レンズ群Ｇ３１と、負の屈折力を有する第３２レンズ群Ｇ３２と、正の屈折力を有する第３３レンズ群Ｇ３３からなり、第３１レンズ群Ｇ３１は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと負メニスカスレンズの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの第２接合レンズからなり、第３２レンズ群Ｇ３２は物体側から順に、両凸形状の正レンズと両凹形状の負レンズの接合レンズからなり、第３３レンズ群Ｇ３３は物体側から順に、両凸形状の正レンズと、物体側に凹面を向けた負メニスカスレンズからなる。 The third lens group G3 includes, in order from the object side, a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group G33 having a positive refractive power. The thirty-first lens group G31 includes, in order from the object side, a biconvex positive lens, a first cemented lens of a biconvex positive lens and a negative meniscus lens, a positive meniscus lens having a convex surface facing the object side, A negative meniscus lens having a convex surface facing the second side and a biconvex positive lens second cemented lens. The thirty-second lens group G32 is composed of a biconvex positive lens and a biconcave negative lens in order from the object side. The thirty-third lens group G33 includes, in order from the object side, a biconvex positive lens and a negative meniscus lens having a concave surface facing the object side.

本第６実施例の広角端状態（Ｗ）においては、防振係数は１．１６であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．３２２（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は１．７５であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群Ｇ３２の移動量は０．４４０（ｍｍ）である。 In the wide-angle end state (W) of the sixth embodiment, the image stabilization coefficient is 1.16 and the focal length is 71.40 (mm), so that the rotational shake of 0.30 ° is corrected. The moving amount of the thirty-second lens group G32 is 0.322 (mm). In the telephoto end state (T), since the image stabilization coefficient is 1.75 and the focal length is 294.00 (mm), the thirty-second lens group G32 for correcting a rotational blur of 0.15 °. The amount of movement is 0.440 (mm).

以下の表６に、本第６実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。 Table 6 below provides values of specifications of the zoom lens having the image stabilization function according to the sixth example.

（表６）
［全体諸元］
f=71.40〜134.90〜294.00
FNO=4.05〜4.29〜5.70
2ω=22.57〜11.76〜5.44°

［レンズ諸元］
N r d νd nd
1 381.8649 3.2698 64.14 1.516330
2 -381.8649 (d 2)

3 71.5714 2.5000 26.52 1.761821
4 49.9993 8.2004 81.54 1.496999
5 -1251.0960 (d 5)

6 -459.6483 1.4000 49.60 1.772499
7 73.4579 2.3256
8 -148.2025 1.4000 49.60 1.772499
9 30.9506 4.0346 23.78 1.846660
10 507.9596 2.1322
11 -53.4502 1.4000 49.60 1.772499
12 745.1895 (d12)

13 ∞ 1.0000 開口絞りＳ
14 299.4180 2.5704 52.64 1.740999
15 -74.3861 0.2000
16 58.6516 5.0344 81.54 1.496999
17 -40.9400 1.4000 34.97 1.800999
18 -586.8839 0.2000
19 32.9311 3.0580 60.64 1.603112
20 86.6358 8.7020
21 66.7204 1.3000 23.78 1.846660
22 34.9761 4.3431 70.23 1.487490
23 -113.9382 5.0000

24 249.3959 3.6484 25.42 1.805181
25 -36.8058 1.2000 39.58 1.804398
26 39.1458 10.9499

27 57.2414 2.6768 31.07 1.688931
28 -326.2393 3.9442
29 -22.0804 1.2000 49.60 1.772499
30 -37.9653 (B.f.)

［可変間隔データー］
広角端状態中間焦点距離状態望遠端状態
f 71.40016 134.90320 294.00205
d2 14.63133 14.63133 14.63133
d5 2.00000 33.48260 46.17223
d12 28.49089 17.74860 0.31866
B.f. 48.78816 52.49212 81.78883

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.40016 134.90320 294.00205
δ12 12.86620 13.12031 13.38598

［条件式対応値］
（１）１．６９３
（２） −０．４１０
（３）０．５２２
（４） −１．５６６
（５）０．０３０
（６）０．３０４
（７）４６．５７
（８）１４．１６
（９） −１．３７２
（１０）０．６１９
（１１）２．１５１
(Table 6)
[Overall specifications]
f = 71.40-134.90-294.00
FNO = 4.05 ~ 4.29 ~ 5.70
2ω = 22.57〜11.76〜5.44 °

[Lens specifications]
N rd νd nd
1 381.8649 3.2698 64.14 1.516330
2 -381.8649 (d 2)

3 71.5714 2.5000 26.52 1.761821
4 49.9993 8.2004 81.54 1.496999
5 -1251.0960 (d 5)

6 -459.6483 1.4000 49.60 1.772499
7 73.4579 2.3256
8 -148.2025 1.4000 49.60 1.772499
9 30.9506 4.0346 23.78 1.846660
10 507.9596 2.1322
11 -53.4502 1.4000 49.60 1.772499
12 745.1895 (d12)

13 ∞ 1.0000 Aperture stop S
14 299.4180 2.5704 52.64 1.740999
15 -74.3861 0.2000
16 58.6516 5.0344 81.54 1.496999
17 -40.9400 1.4000 34.97 1.800999
18 -586.8839 0.2000
19 32.9311 3.0580 60.64 1.603112
20 86.6358 8.7020
21 66.7204 1.3000 23.78 1.846660
22 34.9761 4.3431 70.23 1.487490
23 -113.9382 5.0000

24 249.3959 3.6484 25.42 1.805181
25 -36.8058 1.2000 39.58 1.804398
26 39.1458 10.9499

27 57.2414 2.6768 31.07 1.688931
28 -326.2393 3.9442
29 -22.0804 1.2000 49.60 1.772499
30 -37.9653 (Bf)

[Variable interval data]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40016 134.90320 294.00205
d2 14.63133 14.63133 14.63133
d5 2.00000 33.48260 46.17223
d12 28.49089 17.74860 0.31866
Bf 48.78816 52.49212 81.78883

[Focusing distance]
Wide-angle end state Intermediate focal length state Telephoto end state
f 71.40016 134.90320 294.00205
δ12 12.86620 13.12031 13.38598

[Conditional expression values]
(1) 1.693
(2) -0.410
(3) 0.522
(4) -1.566
(5) 0.030
(6) 0.304
(7) 46.57
(8) 14.16
(9) -1.372
(10) 0.619
(11) 2.151

図２２は本第６実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図２３は本第６実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図２４は本第６実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 FIGS. 22A and 22B are graphs showing various aberrations in the wide-angle end state of the zoom lens having the image stabilization function according to the sixth example. FIG. 22A is an aberration diagram in the infinity state, and FIG. 22B is 0 in the infinity state. 3 shows a meridional transverse aberration diagram when shake correction is performed for rotational shake of 3 °. FIG. 23 is a diagram illustrating various aberrations in the intermediate focal length state of the zoom lens having the image stabilization function according to the sixth example. 24A and 24B show various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the sixth example. FIG. 24A is an aberration diagram in the infinity state, and FIG. 24B is 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

各収差図から、本第６実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From each aberration diagram, it is clear that the zoom lens having the image stabilization function according to the sixth example has excellent image forming performance with various aberrations corrected well.

（第７実施例）
図２５は本発明の第７実施例にかかる防振機能を有するズームレンズのレンズ構成図である。 (Seventh embodiment)
FIG. 25 is a lens configuration diagram of a zoom lens having an anti-vibration function according to Example 7 of the present invention.

図２５において、防振機能を有するズームレンズは、物体側から順に、正の屈折力を有する第１レンズ群Ｇ１と、負の屈折力を有する第２レンズ群Ｇ２と、正の屈折力を有する第３レンズ群Ｇ３から構成され、広角端状態（Ｗ）から望遠端状態（Ｔ）への変倍に際し、第１レンズ群Ｇ１と第２レンズ群Ｇ２の空気間隔が増大し、第２レンズ群Ｇ２と第３レンズ群Ｇ３の空気間隔が減少するように、第１レンズ群Ｇ１と第３レンズ群Ｇ３が物体方向に移動し、第２レンズ群Ｇ２は一旦像面Ｉ方向に移動した後に物体方向に移動する構成である。 In FIG. 25, the zoom lens having the image stabilization function has, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a positive refractive power. The third lens group G3 includes an air gap between the first lens group G1 and the second lens group G2 during zooming from the wide-angle end state (W) to the telephoto end state (T), and the second lens group. The first lens group G1 and the third lens group G3 move in the object direction so that the air gap between G2 and the third lens group G3 decreases, and the second lens group G2 once moves in the image plane I direction before the object It is the structure which moves to a direction.

第３レンズ群Ｇ３は物体側から順に、正の屈折力を有する第３１レンズ群Ｇ３１と、負の屈折力を有する第３２レンズ群Ｇ３２と、正の屈折力を有する第３３レンズ群Ｇ３３からなり、第３１レンズ群Ｇ３１は物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと負メニスカスレンズの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、物体側に凸面を向けた負メニスカスレンズと両凸形状の正レンズの第２接合レンズからなり、第３２レンズ群Ｇ３２は物体側から順に、両凸形状の正レンズと両凹形状の負レンズの接合レンズからなり、第３３レンズ群Ｇ３３は物体側から順に、固定絞りＳ２と、両凸形状の正レンズと、物体側に凹面を向けた負メニスカスレンズからなる。 The third lens group G3 includes, in order from the object side, a thirty-first lens group G31 having a positive refractive power, a thirty-second lens group G32 having a negative refractive power, and a thirty-third lens group G33 having a positive refractive power. The thirty-first lens group G31 includes, in order from the object side, a biconvex positive lens, a first cemented lens of a biconvex positive lens and a negative meniscus lens, a positive meniscus lens having a convex surface facing the object side, A negative meniscus lens having a convex surface facing the second side and a biconvex positive lens second cemented lens. The thirty-second lens group G32 is composed of a biconvex positive lens and a biconcave negative lens in order from the object side. The thirty-third lens group G33 includes, in order from the object side, a fixed stop S2, a biconvex positive lens, and a negative meniscus lens having a concave surface facing the object side.

本第７実施例の広角端状態（Ｗ）においては、防振係数は１．２５であり、焦点距離は７１．４０（ｍｍ）であるので、０．３０°の回転ぶれを補正するための第３２レンズ群の移動量は０．２９９（ｍｍ）である。また望遠端状態（Ｔ）においては、防振係数は１．９０であり、焦点距離は２９４．００（ｍｍ）であるので、０．１５°の回転ぶれを補正するための第３２レンズ群の移動量は０．４０５（ｍｍ）である。 In the wide-angle end state (W) of the seventh embodiment, since the image stabilization coefficient is 1.25 and the focal length is 71.40 (mm), it is necessary to correct a rotational shake of 0.30 °. The amount of movement of the thirty-second lens group is 0.299 (mm). In the telephoto end state (T), since the image stabilization coefficient is 1.90 and the focal length is 294.00 (mm), the 32nd lens group for correcting the rotational blur of 0.15 ° is used. The amount of movement is 0.405 (mm).

以下の表７に、本第７実施例にかかる防振機能を有するズームレンズの諸元の値を掲げる。 Table 7 below provides values of specifications of the zoom lens having the image stabilization function according to the seventh example.

（表７）
［全体諸元］
f=71.40〜135.00〜294.00
FNO=4.64〜4.85〜5.88
2ω=34.46〜17.55〜8.20°

[レンズ諸元]
N R d νd nd
1 340.6588 4.2 64.14 1.51633
2 -340.659 (d2)

3 65.1639 1.8 26.3 1.784696
4 45.8381 8.8 81.61 1.496999
5 -1308.92 (d5)

6 -271.25 1.4 49.61 1.772499
7 71.7854 1.3
8 -566.934 1.4 49.61 1.772499
9 24.4437 4.7 23.78 1.84666
10 133.0962 3.75
11 -46.0918 1.4 49.61 1.772499
12 1927.614 (d12)

13 ∞ 2 開口絞りS
14 188.6747 3.4 60.09 1.639999
15 -72.245 0.2
16 73.7218 6 81.61 1.496999
17 -38.1983 1.4 34.96 1.800999
18 -154.661 0.2
19 32.255 4.2 52.42 1.517417
20 143.854 7.9
21 333.5741 1.3 23.78 1.84666
22 54.3293 4.1 70.24 1.48749
23 -89.5707 10.2

24 256.9205 3.6 25.43 1.805181
25 -35.5686 1.2 39.59 1.804398
26 35.5686 3.4

27 ∞ 3.1 固定絞りＳ２
28 47.0802 4 34.47 1.639799
29 -96.8946 2.4
30 -23.3234 1.2 49.61 1.772499
31 -42.5579 (B.f.)

[可変間隔データー]
広角端状態中間焦点距離状態望遠端状態
f 71.39993 134.99982 294.00047
d2 13.43865 13.43865 13.43865
d5 2.49989 31.01849 43.01129
d12 28.21141 18.59271 2.50011
B.f. 53.40008 57.30852 87.10064

［フォーカシング移動量］
広角端状態中間焦点距離状態望遠端状態
f 71.39991 134.99979 294.00046
δ12 11.08175 11.28593 11.5251

［条件式対応値］
（１）１．５６３
（２） −０．３６８
（３）０．５２５
（４） −１．３８４
（５）０．２３８
（６）０．３０４
（７）４６．５７
（８）１４．１６
（９） −１．３２１
（１０）０．６８５
（１１）２．０５１
(Table 7)
[Overall specifications]
f = 71.40-135.00-294.00
FNO = 4.64〜4.85〜5.88
2ω = 34.46〜17.55〜8.20 °

[Lens specifications]
NR d νd nd
1 340.6588 4.2 64.14 1.51633
2 -340.659 (d2)

3 65.1639 1.8 26.3 1.784696
4 45.8381 8.8 81.61 1.496999
5 -1308.92 (d5)

6 -271.25 1.4 49.61 1.772499
7 71.7854 1.3
8 -566.934 1.4 49.61 1.772499
9 24.4437 4.7 23.78 1.84666
10 133.0962 3.75
11 -46.0918 1.4 49.61 1.772499
12 1927.614 (d12)

13 ∞ 2 Aperture stop S
14 188.6747 3.4 60.09 1.639999
15 -72.245 0.2
16 73.7218 6 81.61 1.496999
17 -38.1983 1.4 34.96 1.800999
18 -154.661 0.2
19 32.255 4.2 52.42 1.517417
20 143.854 7.9
21 333.5741 1.3 23.78 1.84666
22 54.3293 4.1 70.24 1.48749
23 -89.5707 10.2

24 256.9205 3.6 25.43 1.805181
25 -35.5686 1.2 39.59 1.804398
26 35.5686 3.4

27 ∞ 3.1 Fixed aperture S2
28 47.0802 4 34.47 1.639799
29 -96.8946 2.4
30 -23.3234 1.2 49.61 1.772499
31 -42.5579 (Bf)

[Variable interval data]
Wide angle end state Intermediate focal length state Telephoto end state
f 71.39993 134.99982 294.00047
d2 13.43865 13.43865 13.43865
d5 2.49989 31.01849 43.01129
d12 28.21141 18.59271 2.50011
Bf 53.40008 57.30852 87.10064

[Focusing distance]
Wide angle end state Intermediate focal length state Telephoto end state
f 71.39991 134.99979 294.00046
δ12 11.08175 11.28593 11.5251

[Conditional expression values]
(1) 1.563
(2) -0.368
(3) 0.525
(4)-1.384
(5) 0.238
(6) 0.304
(7) 46.57
(8) 14.16
(9) -1.321
(10) 0.685
(11) 2.051

図２６は本第７実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。図２７は本第７実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。図２８は本第７実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。 FIG. 26 shows various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the seventh example, (a) shows an aberration diagram in the infinity state, and (b) shows 0 in the infinity state. 3 shows a meridional transverse aberration diagram when shake correction is performed for rotational shake of 3 °. FIG. 27 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to the seventh example. 28A and 28B show various aberration diagrams in the telephoto end state of the zoom lens having the image stabilization function according to the seventh example. FIG. 28A is an aberration diagram in the infinity state, and FIG. 28B is 0 in the infinity state. Each of the meridional transverse aberration charts when shake correction is performed for rotational shake of 15 ° is shown.

各収差図から、本第７実施例にかかる防振機能を有するズームレンズは諸収差が良好に補正され、優れた結像性能を有していることが明らかである。 From the aberration diagrams, it is clear that the zoom lens having the image stabilization function according to the seventh example has excellent image forming performance with various aberrations corrected well.

なお、本発明の実施例として、３群構成のレンズ系を示したが、該３群に付加レンズ群を加えただけのレンズ系も本発明の効果を内在した同等のレンズ系であることは言うまでもない。また、各レンズ群内の構成においても、実施例の構成に付加レンズを加えただけのレンズ群も本発明の効果を内在した同等のレンズ群であることは言うまでもない。 As an embodiment of the present invention, a lens system having a three-group configuration is shown. However, a lens system in which an additional lens group is added to the three groups is also an equivalent lens system having the effect of the present invention. Needless to say. In addition, in the configuration within each lens group, it goes without saying that a lens group in which an additional lens is added to the configuration of the embodiment is an equivalent lens group in which the effects of the present invention are inherent.

本発明の第１実施例にかかる防振機能を有するズームレンズのレンズ構成図である。1 is a lens configuration diagram of a zoom lens having an image stabilization function according to a first example of the present invention. FIG. 本発明の第１実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 2A shows various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the first embodiment of the present invention, FIG. 4A shows the aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第１実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 6 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to the first example of the present invention. 本発明の第１実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 5A shows aberration diagrams of the zoom lens having the image stabilization function according to the first embodiment of the present invention in the telephoto end state. FIG. 10A is an aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown. 本発明の第２実施例にかかる防振機能を有するズームレンズのレンズ構成図である。FIG. 5 is a lens configuration diagram of a zoom lens having an image stabilization function according to a second example of the present invention. 本発明の第２実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 6A shows various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the second embodiment of the present invention, FIG. 9A shows the aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第２実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 6 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to the second example of the present invention. 本発明の第２実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 5A shows aberration diagrams of the zoom lens having the image stabilization function according to the second embodiment of the present invention in the telephoto end state. FIG. 10A is an aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown. 本発明の第３実施例にかかる防振機能を有するズームレンズのレンズ構成図である。FIG. 6 is a lens configuration diagram of a zoom lens having an image stabilization function according to a third example of the present invention. 本発明の第３実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 7A shows aberration diagrams of the zoom lens having the image stabilization function according to the third embodiment of the present invention in the wide-angle end state, where FIG. 10A is an aberration diagram in the infinite state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第３実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 10 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to Example 3 of the present invention. 本発明の第３実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 5A shows aberration diagrams of the zoom lens having the image stabilization function according to the third embodiment of the present invention in the telephoto end state. FIG. 10A shows an aberration diagram in the infinite state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown. 本発明の第４実施例にかかる防振機能を有するズームレンズのレンズ構成図である。It is a lens block diagram of the zoom lens which has a vibration proof function concerning the 4th example of the present invention. 本発明の第４実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 6A shows various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the fourth example of the present invention, FIG. 5A shows the aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第４実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 9 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to Example 4 of the present invention. 本発明の第４実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 8A shows aberration diagrams of the zoom lens having the image stabilization function according to the fourth embodiment of the present invention in the telephoto end state. FIG. 10A shows an aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown. 本発明の第５実施例にかかる防振機能を有するズームレンズのレンズ構成図である。It is a lens block diagram of the zoom lens which has a vibration proof function concerning the 5th example of the present invention. 本発明の第５実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 6A shows various aberration diagrams of the zoom lens having the image stabilization function according to the fifth embodiment of the present invention in the wide-angle end state, where FIG. 9A is an aberration diagram in the infinite state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第５実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 10 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to Example 5 of the present invention. 本発明の第５実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 9A shows aberration diagrams of the zoom lens having the image stabilization function according to the fifth embodiment of the present invention in the telephoto end state, FIG. 10A shows the aberration diagram in the infinite state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown. 本発明の第６実施例にかかる防振機能を有するズームレンズのレンズ構成図である。It is a lens block diagram of the zoom lens which has a vibration proof function concerning the 6th example of the present invention. 本発明の第６実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 7A shows various aberration diagrams in the wide-angle end state of the zoom lens having the image stabilization function according to the sixth example of the present invention, FIG. 9A shows an aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第６実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 10 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to Example 6 of the present invention. 本発明の第６実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 9A shows aberration diagrams of the zoom lens having the image stabilization function according to the sixth embodiment of the present invention in the telephoto end state, FIG. 10A shows the aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown. 本発明の第７実施例にかかる防振機能を有するズームレンズのレンズ構成図である。It is a lens block diagram of the zoom lens which has a vibration proof function concerning 7th Example of this invention. 本発明の第７実施例にかかる防振機能を有するズームレンズの広角端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．３０°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 7A shows various aberration diagrams of the zoom lens having the image stabilization function according to the seventh embodiment of the present invention in the wide-angle end state. FIG. 10A is an aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 30 ° rotational shake is performed is shown. 本発明の第７実施例にかかる防振機能を有するズームレンズの中間焦点距離状態での諸収差図を示す。FIG. 10 shows various aberration diagrams in the intermediate focal length state of the zoom lens having the image stabilization function according to Example 7 of the present invention. 本発明の第７実施例にかかる防振機能を有するズームレンズの望遠端状態での諸収差図を示し、（ａ）は無限遠状態の収差図を、（ｂ）は無限遠状態において０．１５°の回転ぶれに対するぶれ補正をおこなった時のメリディオナル横収差図をそれぞれ示す。FIG. 9A shows aberration diagrams of the zoom lens having the image stabilization function according to the seventh embodiment of the present invention in the telephoto end state. FIG. 10A shows the aberration diagram in the infinity state, and FIG. The meridional transverse aberration diagram when the shake correction for the 15 ° rotational shake is performed is shown.

符号の説明Explanation of symbols

Ｇ１第１レンズ群
Ｇ２第２レンズ群
Ｇ３第３レンズ群
Ｇ１１第１１レンズ群
Ｇ１２第１２レンズ群
Ｇ３１第３１レンズ群
Ｇ３２第３２レンズ群
Ｇ３３第３３レンズ群
Ｓ開口絞り
Ｓ２固定絞り
Ｉ像面 G1 1st lens group G2 2nd lens group G3 3rd lens group G11 11th lens group G12 12th lens group G31 31st lens group G32 32nd lens group G33 33rd lens group S Aperture stop S2 Fixed stop I Image surface

Claims

物体側から順に、正屈折力の第１レンズ群と、負屈折力の第２レンズ群と、正屈折力の第３レンズ群とからなり、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レンズ群の間隔は増大し、前記第２レンズ群と前記第３レンズ群の間隔が減少し、前記第３レンズ群は、物体側から順に、正屈折力の第３１レンズ群と、負屈折力の第３２レンズ群と、第３３レンズ群とからなり、前記第３２レンズ群のみを光軸と直交方向に移動させることにより、手ぶれ発生時の像面上の像ぶれ補正をおこない、以下の条件を満足することを特徴とする防振機能を有するズームレンズ。
−２．００＜ｆ３２／ｆ３＜−０．８０
但し、
ｆ３は前記第３レンズ群の焦点距離、
ｆ３２は前記第３２レンズ群の焦点距離、 In order from the object side, a first lens group having positive refractive power, a second lens unit having a negative refractive power, and a third lens group having positive refractive power, upon 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, the distance between the second lens group and the third lens group decreases, and the third lens group has a positive refractive power in order from the object side. It consists of a thirty-first lens group, a thirty-second lens group having negative refracting power, and a thirty-third lens group. By moving only the thirty-second lens group in a direction orthogonal to the optical axis, on the image plane when camera shake occurs. A zoom lens having an image stabilization function that performs image blur correction and satisfies the following conditions.
−2.00 <f32 / f3 <−0.80
However,
f3 is the focal length of the third lens group,
f32 is the focal length of the thirty-second lens group,

以下の条件を満足することを特徴とする請求項１に記載の防振機能を有するズームレンズ。
１．４０＜ｆ１／ｆｗ＜２．００
−０．５３＜ｆ２／ｆｗ＜−０．３２
０．３５＜ｆ３／ｆｗ＜０．６５
−０．２０＜ｆ３／ｆ３３＜０．５０
但し、
ｆｗは広角端状態におけるズームレンズの焦点距離、
ｆ１は前記第１レンズ群の焦点距離、
ｆ２は前記第２レンズ群の焦点距離、
ｆ３は前記第３レンズ群の焦点距離、
ｆ３３は前記第３３レンズ群の焦点距離 The zoom lens having an image stabilization function according to claim 1, wherein the following condition is satisfied.
1.40 <f1 / fw <2.00
−0.53 <f2 / fw <−0.32.
0.35 <f3 / fw <0.65
-0.20 <f3 / f33 <0.50
However,
fw is the focal length of the zoom lens in the wide-angle end state,
f1 is the focal length of the first lens group,
f2 is the focal length of the second lens group,
f3 is the focal length of the third lens group,
f33 is the focal length of the 33rd 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レンズ群と前記第３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または２に記載の防振機能を有するズームレンズ。 3. The zoom lens having an image stabilization function according to claim 1, wherein the first lens unit and the third lens unit move in the object direction during zooming from the wide-angle end state to the telephoto end state. .

前記第３１レンズ群は少なくとも３枚の正レンズと少なくとも１枚の負レンズを有し、前記第３２レンズ群は少なくとも１枚の正レンズと少なくとも１枚の負レンズを有し、前記第３３レンズ群は少なくとも１枚の正レンズと少なくとも１枚の負レンズを有することを特徴とする請求項１から３のいずれか１項に記載の防振機能を有するズームレンズ。 The thirty-first lens group has at least three positive lenses and at least one negative lens, the thirty-second lens group has at least one positive lens and at least one negative lens, and the thirty-third lens. 4. The zoom lens having an anti-vibration function according to claim 1, wherein the group includes at least one positive lens and at least one negative lens. 5.

前記第３１レンズ群は、物体側から順に、両凸形状の正レンズと、両凸形状の正レンズと物体側に凹面を向けた負レンズとの第１接合レンズと、物体側に凸面を向けた正メニスカスレンズと、第２接合レンズを有し、以下の条件を満足する請求項１から４のいずれか１項に記載の防振機能を有するズームレンズ。
０．２０＜ｎ３１Ｎ−ｎ３１Ｐ
３０．０＜ν３１Ｐ−ν３１Ｎ
但し、
ｎ３１Ｎは前記第1接合レンズ中の前記負レンズの屈折率、
ｎ３１Ｐは前記第1接合レンズ中の前記両凸形状の正レンズの屈折率、
ν３１Ｎは前記第1接合レンズ中の前記負レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数、
ν３１Ｐは前記第1接合レンズ中の前記両凸形状の正レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数 The thirty-first lens group includes, in order from the object side, a first cemented lens including a biconvex positive lens, a biconvex positive lens and a negative lens having a concave surface facing the object side, and a convex surface facing the object side. 5. A zoom lens having an anti-vibration function according to claim 1, comprising a positive meniscus lens and a second cemented lens, and satisfying the following conditions.
0.20 <n31N-n31P
30.0 <ν31P-ν31N
However,
n31N is the refractive index of the negative lens in the first cemented lens,
n31P is the refractive index of the biconvex positive lens in the first cemented lens,
ν31N is the Abbe number with respect to the d-line (wavelength 587.6 nm) of the negative lens in the first cemented lens,
ν31P is the Abbe number with respect to the d-line (wavelength: 587.6 nm) of the biconvex positive lens in the first cemented lens

前記第３２レンズ群は、物体側から順に、像側に凸面を向けた正レンズと、両凹形状の負レンズを有し、以下の条件を満足することを特徴とする請求項１から５のいずれか１項に記載の防振機能を有するズームレンズ。
１０．０＜ν３２Ｎ−ν３２Ｐ
但し、
ν３２Ｎは前記第３２レンズ群中の前記両凹形状の負レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数、
ν３２Ｐは前記第３２レンズ群中の前記正レンズのｄ線（波長５８７．６ｎｍ）に対するアッベ数 6. The thirty-second lens group includes, in order from the object side, a positive lens having a convex surface facing the image side and a biconcave negative lens, and satisfies the following conditions: A zoom lens having an image stabilization function according to any one of the preceding claims.
10.0 <ν32N−ν32P
However,
ν32N is the Abbe number for the d-line (wavelength 587.6 nm) of the biconcave negative lens in the thirty-second lens group,
ν32P is the Abbe number for the d-line (wavelength 587.6 nm) of the positive lens in the thirty-second lens group.

前記第３２レンズ群は、物体側から順に、像側に凸面を向けた正レンズと両凹形状の負レンズの接合レンズからなり、以下の条件を満足することを特徴とする請求項１から６のいずれか１項に記載の防振機能を有するズームレンズ。
−２．００＜（ｒ３２Ｒ＋ｒ３２Ｆ）／（ｒ３２Ｒ−ｒ３２Ｆ）＜−０．７０
但し、
ｒ３２Ｆは前記第３２レンズ群の前記正レンズの物体側面の曲率半径、
ｒ３２Ｒは前記第３２レンズ群の前記両凹形状の負レンズの像側面の曲率半径 The thirty-second lens group includes, in order from the object side, a cemented lens of a positive lens having a convex surface facing the image side and a biconcave negative lens, and satisfies the following conditions: A zoom lens having the image stabilization function according to any one of the above.
−2.00 <(r32R + r32F) / (r32R−r32F) <− 0.70
However,
r32F is a radius of curvature of the object side surface of the positive lens of the thirty-second lens group,
r32R is the radius of curvature of the image side surface of the biconcave negative lens of the thirty-second lens group

以下の条件を満足することを特徴とする請求項７に記載の防振機能を有するズームレンズ。
０．４０＜ｒ３２Ｓ／ｆ３２＜０．９０
但し、
ｒ３２Ｓは前記第３２レンズ群の前記接合レンズの接合面の曲率半径、
ｆ３２は前記第３２レンズ群の焦点距離 The zoom lens having an image stabilization function according to claim 7, wherein the following condition is satisfied.
0.40 <r32S / f32 <0.90
However,
r32S is a radius of curvature of the cemented surface of the cemented lens of the thirty-second lens group,
f32 is the focal length of the thirty-second lens group.

前記第１レンズ群は、物体側から順に、正屈折力の第１１レンズ群と、正屈折力の第１２レンズ群からなり、遠距離状態から近距離状態へのフォーカシングに際して、前記第１２レンズ群のみを物体方向に移動させ、以下の条件を満足することを特徴とする請求項１から８のいずれか１項に記載の防振機能を有するズームレンズ。
１．７０＜ｆ１１／ｆ１２＜４．００
但し、
ｆ１１は前記第１１レンズ群の焦点距離、
ｆ１２は前記第１２レンズ群の焦点距離 The first lens group includes, in order from the object side, an eleventh lens group having a positive refractive power and a twelfth lens group having a positive refractive power. In focusing from a long distance state to a short distance state, the twelfth lens group The zoom lens having an anti-vibration function according to any one of claims 1 to 8, wherein only the zoom lens is moved in the object direction and the following condition is satisfied.
1.70 <f11 / f12 <4.00
However,
f11 is a focal length of the eleventh lens group,
f12 is the focal length of the twelfth lens group

前記第３２レンズ群は接合レンズを有することを特徴とする請求項１から６のいずれか１項に記載のズームレンズ。 The zoom lens according to any one of claims 1 to 6, wherein the thirty-second lens group includes a cemented lens.