JP4479204B2 - Highly variable magnification optical system capable of image shift - Google Patents

Highly variable magnification optical system capable of image shift Download PDF

Info

Publication number
JP4479204B2
JP4479204B2 JP2003341903A JP2003341903A JP4479204B2 JP 4479204 B2 JP4479204 B2 JP 4479204B2 JP 2003341903 A JP2003341903 A JP 2003341903A JP 2003341903 A JP2003341903 A JP 2003341903A JP 4479204 B2 JP4479204 B2 JP 4479204B2
Authority
JP
Japan
Prior art keywords
lens
state
image
shift
telephoto
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2003341903A
Other languages
Japanese (ja)
Other versions
JP2005107280A (en
JP2005107280A5 (en
Inventor
智希 伊藤
Original Assignee
株式会社ニコン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ニコン filed Critical 株式会社ニコン
Priority to JP2003341903A priority Critical patent/JP4479204B2/en
Priority claimed from US10/785,096 external-priority patent/US7136231B2/en
Publication of JP2005107280A5 publication Critical patent/JP2005107280A5/ja
Publication of JP2005107280A publication Critical patent/JP2005107280A/en
Application granted granted Critical
Publication of JP4479204B2 publication Critical patent/JP4479204B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
    • G02B15/1441Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
    • G02B15/144113Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +-++
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/16Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/163Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
    • G02B15/167Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
    • G02B15/173Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high variable power optical system which permits blurring correction and is capable of image shift for achieving high variable power. <P>SOLUTION: The high variable power optical system capable of image shift has a first lens group G1 having a positive refractive force, a second lens group G2 having a negative refractive force, a third lens group G3 having a positive refractive force and a fourth lens group G4 having a positive refractive force in this order from the object side. When the lens position state is changed from the wide angle end to the telephoto end, the first to fourth lens groups are moved so that the interval between the first lens group and second lens group increases, the interval between the second lens group and third lens group decreases and the interval between the third lens group and fourth lens group decreases. Further, the third lens group has at least two partial lens groups having a positive force, and one of the partial lens groups is shifted in the direction vertical to the optical axis as a shift lens group so as to satisfy the prescribed conditions. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

本発明は、変倍光学系に関し、特に像シフトが可能な高変倍光学系に関する。   The present invention relates to a variable magnification optical system, and more particularly to a high variable magnification optical system capable of image shift.

近年の光学設計技術・製造技術の進歩により、ズームレンズは小型化と高変倍化が図られ、正、負、正、正の屈折力から成る4群ズームレンズタイプで高変倍化を図っている(例えば、特許文献1参照。)。   Due to recent advances in optical design technology and manufacturing technology, zoom lenses have been downsized and zoomed in, and high zoom ratios have been achieved with a four-group zoom lens type consisting of positive, negative, positive, and positive refractive powers. (For example, refer to Patent Document 1).

また、高変倍化による望遠端状態の焦点距離の増長に伴い、手ぶれの問題が一層顕著になり、これを解決するために手ぶれ補正機能を有する種々のズームレンズが提案されている(例えば、特許文献2参照。)。
特開2001−117005号公報特開平15−140048号公報Further, as the focal length in the telephoto end state increases due to high zooming, the problem of camera shake becomes more prominent, and various zoom lenses having a camera shake correction function have been proposed to solve this problem (for example, (See Patent Document 2).
JP 2001-117005 A Japanese Patent Laid-Open No. 15-140048
また、高変倍化による望遠端状態の焦点距離の増長に伴い、手ぶれの問題が一層顕著になり、これを解決するために手ぶれ補正機能を有する種々のズームレンズが提案されている(例えば、特許文献2参照。)。
特開2001−117005号公報特開平15−140048号公報Further, as the focal length in the telephoto end state increases due to high zooming, the problem of camera shake becomes more prominent, and various zoom lenses having a camera shake correction function have been proposed to solve this problem (for example, (See Patent Document 2).
JP 2001-117005 A Japanese Patent Laid-Open No. 15-140048
また、高変倍化による望遠端状態の焦点距離の増長に伴い、手ぶれの問題が一層顕著になり、これを解決するために手ぶれ補正機能を有する種々のズームレンズが提案されている(例えば、特許文献2参照。)。
特開2001−117005号公報特開平15−140048号公報Further, as the focal length in the telephoto end state increases due to high zooming, the problem of camera shake becomes more prominent, and various zoom lenses having a camera shake correction function have been proposed to solve this problem (for example, (See Patent Document 2).
JP 2001-117005 A Japanese Patent Laid-Open No. 15-140048
また、高変倍化による望遠端状態の焦点距離の増長に伴い、手ぶれの問題が一層顕著になり、これを解決するために手ぶれ補正機能を有する種々のズームレンズが提案されている(例えば、特許文献2参照。)。
特開2001−117005号公報特開平15−140048号公報
Further, as the focal length in the telephoto end state increases due to high zooming, the problem of camera shake becomes more prominent, and various zoom lenses having a camera shake correction function have been proposed to solve this problem (for example, (See Patent Document 2).
JP 2001-117005 A Japanese Patent Laid-Open No. 15-140048
また、高変倍化による望遠端状態の焦点距離の増長に伴い、手ぶれの問題が一層顕著になり、これを解決するために手ぶれ補正機能を有する種々のズームレンズが提案されている(例えば、特許文献2参照。)。
特開2001−117005号公報特開平15−140048号公報
Further, as the focal length in the telephoto end state increases due to high zooming, the problem of camera shake becomes more prominent, and various zoom lenses having a camera shake correction function have been proposed to solve this problem (for example, (See Patent Document 2).
JP 2001-117005 A Japanese Patent Laid-Open No. 15-140048
また、高変倍化による望遠端状態の焦点距離の増長に伴い、手ぶれの問題が一層顕著になり、これを解決するために手ぶれ補正機能を有する種々のズームレンズが提案されている(例えば、特許文献2参照。)。
特開2001−117005号公報特開平15−140048号公報
Further, as the focal length in the telephoto end state increases due to high zooming, the problem of camera shake becomes more prominent, and various zoom lenses having a camera shake correction function have been proposed to solve this problem (for example, (See Patent Document 2).
JP 2001-117005 A Japanese Patent Laid-Open No. 15-140048

しかし、従来の手ぶれ補正機能を有するズームレンズは、光学系を構成するレンズ枚数が多くなり、さらに、鏡筒内に手ぶれ補正を行う機構を組み込まなければならず、鏡筒の全長・外径が大きくなり、コンパクト性が損なわれる傾向にあった。また、手ぶれ補正機能を有しながら高変倍化を図ると光学性能の劣化が著しく、ズームレンズとして満足できる性能を得ることが困難であった。   However, a conventional zoom lens having a camera shake correction function has a large number of lenses constituting an optical system, and a mechanism for correcting camera shake must be incorporated in the lens barrel. There was a tendency for the size to increase and the compactness to be impaired. Further, when zooming is performed while having a camera shake correction function, the optical performance is significantly deteriorated, and it is difficult to obtain satisfactory performance as a zoom lens.

本発明は、上記課題に鑑みてなされたもので、手ぶれ補正が可能で、かつ高変倍化を達成する像シフト可能な高変倍光学系を提供する事を目的としている。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a high-magnification optical system capable of image blurring and capable of image shift that achieves high zooming.

上記問題点を解決するために本発明は、物体側より順に、正の屈折力を有する第1レンズ群と、負の屈折力を有する第2レンズ群と、正の屈折力を有する第3レンズ群と、正の屈折力を有する第4レンズ群とからなり、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群と前記第2レンズ群との間隔が増大し、前記第2レンズ群と前記第3レンズ群との間隔が減少し、前記第3レンズ群と前記第4レンズ群との間隔が減少するように、前記第1レンズ群乃至前記第4レンズ群が移動し、前記第2レンズ群は、少なくとも3枚の負レンズと1枚の正レンズとを有し、前記第3レンズ群は、物体側より順に、正の屈折力を有する第3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、前記第3A群は、2枚の正レンズと1枚の負レンズとから成り、前第3B群をシフトレンズ群として、光軸と垂直方向に移動させることによって像をシフトし、以下の条件を満足することを特徴とする像シフト可能な高変倍光学系を提供する。 In order to solve the above-described problems, the present invention, in order from the object side, includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens having a positive refractive power. and the group consists of a fourth lens group having positive refractive power, when the lens position state changes to the telephoto end state from the wide-angle end state, a distance between the second lens group and the third lens group is increased The first lens group to the fourth lens so that the distance between the second lens group and the third lens group decreases and the distance between the third lens group and the fourth lens group decreases. The second lens group has at least three negative lenses and one positive lens, and the third lens group has a positive refractive power in order from the object side. And a third group B having positive refractive power and a third group C having negative refractive power. Wherein the 3A group is composed of a two positive lenses and one negative lens, the front Symbol the 3B group as a shift lens group, to shift the image by moving in a direction perpendicular to the optical axis, the following conditions The present invention provides a high-magnification variable optical system capable of image shifting.

0.120 < DT/fT < 0.245
但し、DTは望遠端状態における、前記第1レンズ群の最も像側のレンズ面と前記第2レンズ群の最も物体側のレンズ面との空気間隔、fTは望遠端状態の焦点距離である。
0.120 <DT / fT <0.245
However, DT is an air space between the most image side lens surface of the first lens group and the most object side lens surface of the second lens group in the telephoto end state, and fT is a focal length in the telephoto end state.

本発明によれば、手ぶれ補正が可能で、かつ高変倍化を達成する像シフト可能な高変倍光学系を提供する事ができる。 According to the present invention, it is possible to provide a high-magnification optical system capable of image stabilization and capable of image shift capable of correcting camera shake.

以下、本発明の実施の形態にかかる像シフト可能な高変倍光学系(以後、ズームレンズと記す)について説明する。 Hereinafter, an image-shiftable high variable magnification optical system (hereinafter referred to as a zoom lens) according to an embodiment of the present invention will be described.

本発明の実施の形態にかかるズームレンズは、物体側より順に、正の屈折力を有する第1レンズ群と、負の屈折力を有する第2レンズ群と、正の屈折力を有する第3レンズ群と、正の屈折力を有する第4レンズ群とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群と前記第2レンズ群との間隔が増大し、前記第2レンズ群と前記第3レンズ群との間隔が減少し、前記第3レンズ群と前記第4レンズ群との間隔が減少するように、前記第1レンズ群乃至前記第4レンズ群が移動し、前記第3レンズ群は、正の屈折力を有する少なくとも2つの部分レンズ群を有し、前記部分レンズ群の内の一方の部分レンズ群をシフトレンズ群として、光軸と垂直方向に移動させることにより像をシフトして手ぶれ補正を行うズームレンズであって、以下の条件式(1)を満足している。   The zoom lens according to the embodiment of the present invention 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 having a positive refractive power. And a fourth lens group having a positive refractive power, and when the lens position changes from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group is The first lens group to the fourth lens group increase so that the distance between the second lens group and the third lens group decreases and the distance between the third lens group and the fourth lens group decreases. The lens group moves, the third lens group has at least two partial lens groups having positive refractive power, and one of the partial lens groups is a shift lens group, and the optical axis Image stabilization by shifting the image vertically A zoom lens that performs, satisfies the following conditional expression (1).

(1) 0.120 < DT/fT < 0.245
但し、DTは望遠端状態における、第1レンズ群の最も像側のレンズ面と第2レンズ群の最も物体側のレンズ面との空気間隔、fTは望遠端状態の焦点距離である。
(1) 0.120 <DT / fT <0.245
However, DT is the air space between the most image side lens surface of the first lens group and the most object side lens surface of the second lens group in the telephoto end state, and fT is the focal length in the telephoto end state.

正の屈折力を有する第3レンズ群において、正の屈折力を有する少なくとも2つの部分レンズ群の内の一方の部分レンズ群をシフトレンズ群とすると、屈折力が小さくて収差への影響が小さいため、防振時の収差変動を小さくすることができる。さらに、負の屈折力のレンズ群をシフトレンズ群とする手ぶれ補正は、手ぶれと同方向にシフトレンズ群をシフトすることになり、正の屈折力の部分レンズ群をシフトレンズ群とした手ぶれ補正に比べ、制御系の負荷が大きく、手ぶれ補正時の振動も大きくなるため、撮影者に不快感を与える。よって、シフトレンズ群には、正の屈折力を有する部分レンズ群を選択することが望ましい。   In the third lens group having a positive refractive power, if one of the at least two partial lens groups having a positive refractive power is a shift lens group, the refractive power is small and the influence on the aberration is small. Therefore, aberration fluctuations during image stabilization can be reduced. Furthermore, camera shake correction using a lens unit with negative refractive power as a shift lens unit shifts the shift lens unit in the same direction as camera shake, and camera shake correction using a partial lens unit with positive refractive power as a shift lens unit. Compared to the above, the load on the control system is large, and the vibration at the time of camera shake correction is large, which gives the photographer an unpleasant feeling. Therefore, it is desirable to select a partial lens group having a positive refractive power as the shift lens group.

条件式(1)は、望遠端状態における第1レンズ群と第2レンズ群との空気間隔に関する式である。   Conditional expression (1) is an expression relating to the air gap between the first lens group and the second lens group in the telephoto end state.

条件式(1)の下限値を下回ると、望遠端状態での負の球面収差を良好に補正することが出来ず、高い変倍比を達成することが出来なくなってしまうので好ましくない。なお、下限値を0.15以上に設定すると、さらに球面収差等の諸収差を良好に補正することができるので好ましい。   If the lower limit of conditional expression (1) is not reached, negative spherical aberration in the telephoto end state cannot be corrected well, and a high zoom ratio cannot be achieved. It is preferable to set the lower limit to 0.15 or more because various aberrations such as spherical aberration can be corrected satisfactorily.

条件式(1)の上限値を上回ると、望遠端状態において、第1レンズ群を通過する軸外光束が光軸から離れてしまうため、第1レンズ群の径が大きくなってしまい好ましくない。なお、上限値を0.240以下に設定すると、さらに球面収差等の諸収差を良好に補正することができるので好ましい。   Exceeding the upper limit value of conditional expression (1) is not preferable because the off-axis light beam passing through the first lens group is separated from the optical axis in the telephoto end state, and the diameter of the first lens group becomes large. It is preferable to set the upper limit value to 0.240 or less because various aberrations such as spherical aberration can be corrected satisfactorily.

また、本発明の実施の形態にかかるズームレンズおいて、より良好なる結像性能を確保するために、以下の条件式(2)を満足する事が望ましい。 In the zoom lens according to the embodiment of the present invention, it is preferable that the following conditional expression (2) is satisfied in order to ensure better imaging performance.

(2) 0.8 < (1−βA)×βB < 3.5
但し、βAはシフトレンズ群の横倍率、βBはシフトレンズ群と像面との間にある光学要素の横倍率である。
(2) 0.8 < (1-βA) × βB <3.5

Where βA is the lateral magnification of the shift lens group, and βB is the lateral magnification of the optical element between the shift lens group and the image plane. Where βA is the lateral magnitude of the shift lens group, and βB is the lateral magnitude of the optical element between the shift lens group and the image plane.

条件式(2)は、シフトレンズ群の横倍率とシフトレンズ群と像面との間にある光学要素の横倍率に関する式である。 Conditional expression (2) is an expression relating to the lateral magnification of the shift lens group and the lateral magnification of the optical element between the shift lens group and the image plane.

条件式(2)の下限値を下回ると、必要な像のシフト量を得るためのシフトレンズ群の偏芯量が大きくなり、シフトレンズ群の外径の大型化と重量の増加を招いてしまう。その結果、シフトレンズ群の駆動装置も肥大化し、コンパクト性を損なってしまうので好ましくない。   If the lower limit of conditional expression (2) is not reached, the amount of decentering of the shift lens group for obtaining the required image shift amount will increase, leading to an increase in the outer diameter and weight of the shift lens group. . As a result, the driving device for the shift lens group is enlarged, and the compactness is impaired.

条件式(2)の上限値を上回ると、シフトレンズ群の微小変位によっても像が大きくぶれてしまうので、手ぶれ補正時のシフトレンズ群の駆動・制御が困難になるため好ましくない。なお、上限値を3.0以下に設定すると、さらにシフトレンズ群の駆動・制御が容易となり、良好な光学性能を得ることができるので好ましい。   Exceeding the upper limit value of conditional expression (2) is not preferable because the image is greatly blurred due to a minute displacement of the shift lens group, and it becomes difficult to drive and control the shift lens group during camera shake correction. In addition, it is preferable to set the upper limit value to 3.0 or less because it becomes easier to drive and control the shift lens group and good optical performance can be obtained.

また、本発明の実施の形態にかかるズームレンズおいて、第3レンズ群は、物体側から順に、正の屈折力を有する第3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群とすることが望ましい。これにより、シフトレンズ群の小型化・軽量化が達成でき、それに伴うシフトレンズ群の駆動装置の小型化・軽量化も図られ、良好な結像性能を損なうことなく、コンパクトで高変倍の光学系を得ることが可能となる。   In the zoom lens according to the embodiment of the present invention, the third lens group includes, in order from the object side, a third A group having positive refractive power, a third B group having positive refractive power, and a negative It is desirable that the third lens group includes a third lens group having refractive power and the third lens group is a shift lens group. As a result, the shift lens group can be reduced in size and weight, and the shift lens group drive unit can be reduced in size and weight, and the compact and high zoom ratio can be achieved without impairing good imaging performance. An optical system can be obtained.

また、本発明の実施の形態にかかるズームレンズにおいて、シフトレンズ群に少なくとも1面以上の非球面を有することが望ましい。これにより像シフト時に、より良好な結像性能を得ることが可能となる。   In the zoom lens according to the embodiment of the present invention, it is desirable that the shift lens group has at least one aspheric surface. This makes it possible to obtain better imaging performance during image shift.

また、本発明の実施の形態にかかるズームレンズにおいて、第2レンズ群が少なくとも3枚の負レンズと1枚の正レンズを有し、第3A群が2枚の正レンズと1枚の負レンズを有し、第3B群が1枚の正レンズと1枚の負レンズから構成され、第4レンズ群にレンズ中心からレンズ周辺に行くに従って正の屈折力が強くなる形状の非球面を少なくとも1面有することが望ましい。これによりコンパクトで良好な光学性能のズームレンズを達成することができる。   In the zoom lens according to the embodiment of the present invention, the second lens group includes at least three negative lenses and one positive lens, and the third A group includes two positive lenses and one negative lens. The third lens group is composed of one positive lens and one negative lens, and the fourth lens group has at least one aspherical surface with a positive refractive power that increases from the lens center to the lens periphery. It is desirable to have a surface. Thereby, a zoom lens having a compact and good optical performance can be achieved.

なお、本発明の実施の形態にかかるズームレンズでは、フォーカシングを第2レンズ群で行っているが、第2レンズ群以外で行う事も可能である。   In the zoom lens according to the embodiment of the present invention, focusing is performed by the second lens group, but it can also be performed by other than the second lens group.

また、開口絞りを第2群レンズ群と第3レンズ群の間に配置しているが、それ以外のレンズ群とレンズ群の間、例えば第3レンズ群と第4レンズ群の間や、レンズ群内、例えば第3レンズ群内に配置することも可能である。   Further, the aperture stop is arranged between the second lens group and the third lens group, but between the other lens groups and the lens group, for example, between the third lens group and the fourth lens group, or the lens. It is also possible to arrange in the third lens group, for example.

また、本発明の実施の形態にかかるズームレンズは、4つのレンズ群で構成されるが、各レンズ群の間や隣接した像側や物体側に他のレンズ群を付加することも可能である。   In addition, the zoom lens according to the embodiment of the present invention includes four lens groups. However, it is possible to add other lens groups between the lens groups or adjacent to the image side or the object side. .

また、本発明の実施の形態にかかるズームレンズにおいて、別の観点によれば、回折光学素子を用いる事も可能である。回折光学素子を用いる事により特に色収差を良好に補正する事ができる。 Further, in the zoom lens according to the embodiment of the present invention, it is also possible to use a diffractive optical element from another viewpoint. By using a diffractive optical element, chromatic aberration can be corrected particularly well.

(実施例)
以下に、本発明の各実施例にかかるズームレンズについて説明する。
(Example)
The zoom lens according to each example of the present invention is described below.

各実施例において、非球面は以下の式で表される。 In each embodiment, the aspherical surface is expressed by the following equation.

(数1)
x=cy 2 /{1+(1−κc 221/2 }+C4y 4 +C6y 6 +C8y 8 +C10y 10
なお、yは光軸からの高さ、xはサグ量、cは基準球面の曲率(近軸曲率)、κは円錐定数、C4,C6,C8、C10は、それぞれ4次、6次、8次、10次の非球面係数である。
(Equation 1)
x = cy 2 / {1+ (1-κc 2 y 2 ) 1/2 } + C4y 4 + C6y 6 + C8y 8 + C10y 10

Here, y is the height from the optical axis, x is the sag amount, c is the curvature of the reference spherical surface (paraxial curvature), κ is the conic constant, and C4, C6, C8, and C10 are the 4th, 6th, and 8th, respectively. Next, a 10th-order aspheric coefficient. Here, y is the height from the optical axis, x is the sag amount, c is the curvature of the reference spherical surface (paraxial curvature), κ is the conic constant, and C4, C6, C8, and C10 are the 4th, 6th, and 8th, respectively. Next, a 10th-order aspherical coefficient.

(第1実施例)
図1は、本発明の第1実施例によるズームレンズの断面図を示している。
(First embodiment)
FIG. 1 shows a sectional view of a zoom lens according to a first embodiment of the present invention.

図1において、物体側より順に、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と、正の屈折力を有する第4レンズ群G4とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群G1と前記第2レンズ群G2との間隔が増大し、前記第2レンズ群G2と前記第3レンズ群G3との間隔が減少し、前記第3レンズ群G3と前記第4レンズ群G4との間隔が減少するように、前記第1レンズ群G1乃至前記第4レンズ群G4が移動するようにズームレンズが構成されている。符号Iは、像面を示している。   In FIG. 1, 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, a third lens group G3 having a positive refractive power, and a positive When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group G1 and the second lens group G2 increases. The first lens groups G1 to G1 are arranged such that the distance between the second lens group G2 and the third lens group G3 is decreased, and the distance between the third lens group G3 and the fourth lens group G4 is decreased. The zoom lens is configured so that the fourth lens group G4 moves. Reference numeral I indicates an image plane.

また、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3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群として光軸に垂直に移動させ像シフトを可能としている。   The third lens group G3 includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power. The 3B group is moved as a shift lens group perpendicularly to the optical axis to enable image shift.

第1レンズ群G1は、物体側に凸面を向けた負メニスカスレンズL11と両凸形状の正レンズL12との接合レンズと、物体側に凸面を向けた正メニスカスレンズL13とから構成されている。   The first lens group G1 includes a cemented lens of a negative meniscus lens L11 having a convex surface facing the object side and a biconvex positive lens L12, and a positive meniscus lens L13 having a convex surface facing the object side.

第2レンズ群G2は、物体側に凸面を向けた負メニスカスレンズL21と両凹形状の負レンズL22と両凸形状の正レンズL23と両凹形状の負レンズL24とから構成されている。   The second lens group G2 includes a negative meniscus lens L21 having a convex surface directed toward the object side, a biconcave negative lens L22, a biconvex positive lens L23, and a biconcave negative lens L24.

第3レンズ群G3は、両凸形状の正レンズL31と、物体側に凸面を向けた正メニスカスレンズL32と物体側に凸面を向けた負メニスカスレンズL33との接合レンズとからなる第3A群と、両凸形状の正レンズL34と物体側に凹面を向けた負メニスカスレンズL35との接合レンズからなる第3B群と、物体側に凹面を向けた負メニスカスレンズL36からなる第3C群とから構成されている。   The third lens group G3 is composed of a biconvex positive lens L31, a cemented lens of a positive meniscus lens L32 having a convex surface facing the object side, and a negative meniscus lens L33 having a convex surface facing the object side. 3B group consisting of a cemented lens of a biconvex positive lens L34 and a negative meniscus lens L35 having a concave surface facing the object side, and a third C group consisting of a negative meniscus lens L36 having a concave surface facing the object side Has been.

第4レンズ群G4は、両凸形状の正レンズL41と、物体側に凹面を向けた正メニスカスレンズL42と両凹形状の負レンズL43との接合レンズとから構成されている。 The fourth lens group G4 includes a biconvex positive lens L41, and a cemented lens of a positive meniscus lens L42 having a concave surface facing the object side and a biconcave negative lens L43.

また、開口絞りSは第3レンズ群G3の最も物体側のレンズ面の近傍に設けられ、変倍の際に第3レンズ群G3と共に移動する。 The aperture stop S is provided in the vicinity of the lens surface closest to the object side of the third lens group G3, and moves together with the third lens group G3 during zooming.

以下の表1に、本発明の第1実施例にかかるズームレンズの諸元の値を掲げる。表中のfは焦点距離、FNOはFナンバー、2ωは画角、BFはバックフォーカスを表し、アッベ数および屈折率はd線(λ=587.6nm)に対する値を示している。   Table 1 below provides values of specifications of the zoom lens according to the first example of the present invention. In the table, f represents the focal length, FNO represents the F number, 2ω represents the angle of view, BF represents the back focus, and the Abbe number and the refractive index represent values with respect to the d-line (λ = 587.6 nm).

なお、以下の全ての諸元値において掲載されている焦点距離f、曲率半径、面間隔、その他長さの単位は一般に「mm」が使われるが、光学系は、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、曲率半径0.0000は平面を示し、空気の屈折率1.00000は省略してある。非球面係数の「E−n」は「10-n」を示す。なお、上述の記号の説明は他の実施例でも同様である。 In addition, the focal length f, the radius of curvature, the surface interval, and other length units listed in all the following specification values are generally “mm”, but the optical system is proportionally enlarged or reduced. However, the same optical performance can be obtained, and the present invention is not limited to this. The radius of curvature of 0.0000 indicates a plane, and the refractive index of air of 1.0000 is omitted. “E-n” of the aspheric coefficient indicates “10 −n ”. The description of the above symbols is the same in the other embodiments.

(表1)
(全体諸元)
広角端状態 中間焦点距離状態 望遠端状態
f 31.169 112.180 299.993
2ω 72.3 21.0 8.0°
FNO 3.6 5.6 6.6
(レンズデータ)
面番号 曲率半径 面間隔 アッベ数 屈折率
1 128.0762 2.000 28.56 1.79504
2 74.7110 8.000 82.52 1.49782
3 -301.4490 0.100
4 62.5606 5.200 82.52 1.49782
5 174.0263 D1
6 133.1122 0.200 38.09 1.55389
7 110.0000 1.000 49.61 1.77250
8 18.5937 4.800
9 -68.9214 1.000 42.72 1.83481
10 80.9399 0.100
11 31.2602 4.200 22.76 1.80809
12 -61.8236 1.200
13 -26.3434 1.000 49.61 1.77250
14 302.0857 D2
15 0.0000 0.500 (開口絞りS)
16 32.0000 3.500 54.66 1.72916
17 -631.6375 0.100
18 21.1207 4.000 82.52 1.49782 18 21.1207 4.000 82.52 1.49782
19 248.3602 1.000 37.17 1.83400 19 248.3602 1.000 37.17 1.83400
20 28.9425 3.000 20 28.9425 3.000
21 49.5392 3.000 49.52 1.74442 21 49.5392 3.000 49.52 1.74442
22 -39.8231 1.000 23.78 1.84666 22 -39.8231 1.000 23.78 1.84666
23 -121.9266 3.000 23 -121.9266 3.000
24 -26.5552 1.000 42.72 1.83481 24-26.5552 1.000 42.72 1.83481
25 -220.0557 D3 25 -220.0557 D3
26 53.1534 4.000 55.34 1.67790 26 53.1534 4.000 55.34 1.67790
27 -20.4060 0.100 27 -20.4060 0.100
28 -117.6204 4.000 33.80 1.64769 28 -117.6204 4.000 33.80 1.64769
29 -14.2583 1.000 42.72 1.83481 29 -14.2583 1.000 42.72 1.83481
30 71.3854 BF 30 71.3854 BF

(非球面係数) (Aspherical coefficient)
第6面、第21面、第26面および第27面の各レンズ面は非球面であり、非球面係数を以下に示す。 Each lens surface of the sixth surface, the twenty-first surface, the 26th surface, and the 27th surface is an aspherical surface, and the aspherical surface coefficients are shown below.

面 κ C 4 C 6 C 8 C10 Surface κ C 4 C 6 C 8 C 10
6 64.5192 7.6611E-07 1.7093E-09 -2.1081E-11 1.0148E-13 6 64.5192 7.6611E-07 1.7093E-09 -2.1081E-11 1.0148E-13
21 -1.0025 -5.4592E-07 -3.9750E-09 2.0368E-11 1.8147E-13 21 -1.0025 -5.4592E-07 -3.9750E-09 2.0368E-11 1.8147E-13
26 -19.8163 1.9335E-07 -2.0631E-08 1.4059E-10 0.0000E-00 26 -19.8163 1.9335E-07 -2.0631E-08 1.4059E-10 0.0000E-00
27 0.3829 6.9273E-06 -1.0557E-08 1.5108E-10 -3.9880E-13 27 0.3829 6.9273E-06 -1.0557E-08 1.5108E-10 -3.9880E-13

(可変間隔データ) (Variable interval data)
焦点距離を変化させる際の可変間隔を以下に示す。 The variable interval when changing the focal length is shown below.

広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 31.169 112.180 299.993 f 31.169 112.180 299.993
D1 1.692 38.508 62.092 D1 1.692 38.508 62.092
D2 27.147 12.174 1.502 D2 27.147 12.174 1.502
D3 4.956 0.910 0.033 D3 4.956 0.910 0.033
BF 46.216 82.184 100.098 BF 46.216 82.184 100.098

(像シフト時の諸量) (Amounts when shifting images)
広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 31.169 112.180 299.993 f 31.169 112.180 299.993
シフトレンズ群の移動量 0.250 0.350 0.450 Movement amount of shift lens group 0.250 0.350 0.450
像の移動量 0.295 0.673 1.041 Image movement 0.295 0.673 1.041

(条件式対応値) (Conditional expression corresponding value)
(1) DT/fT = 0.207 (1) DT / fT = 0.207
(2) (1−βA)×βB =1.2(広角端状態)〜1.9(中間焦点距離状態)〜2.3(望遠端状態) (Table 1) (2) (1-βA) x βB = 1.2 (wide-angle end state) to 1.9 (intermediate focal length state) to 2.3 (telephoto end state) (Table 1)
(Overall specifications) (Overall specifications)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 31.169 112.180 299.993 f 31.169 112.180 299.993
2ω 72.3 21.0 8.0 ° 2ω 72.3 21.0 8.0 °
FNO 3.6 5.6 6.6 FNO 3.6 5.6 6.6
(Lens data) (Lens data)
Surface number Curvature radius Surface spacing Abbe number Refractive index Surface number Curvature radius Surface spacing Abbe number Refractive index
1 128.0762 2.000 28.56 1.79504 1 128.0762 2.000 28.56 1.79504
2 74.7110 8.000 82.52 1.49782 2 74.7110 8.000 82.52 1.49782
3 -301.4490 0.100 3 -301.4490 0.100
4 62.5606 5.200 82.52 1.49782 4 62.5606 5.200 82.52 1.49782
5 174.0263 D1 5 174.0263 D1
6 133.1122 0.200 38.09 1.55389 6 133.1122 0.200 38.09 1.55389
7 110.0000 1.000 49.61 1.77250 7 110.0000 1.000 49.61 1.77250
8 18.5937 4.800 8 18.5937 4.800
9 -68.9214 1.000 42.72 1.83481 9 -68.9214 1.000 42.72 1.83481
10 80.9399 0.100 10 80.9399 0.100
11 31.2602 4.200 22.76 1.80809 11 31.2602 4.200 22.76 1.80809
12 -61.8236 1.200 12 -61.8236 1.200
13 -26.3434 1.000 49.61 1.77250 13 -26.3434 1.000 49.61 1.77250
14 302.0857 D2 14 302.0857 D2
15 0.0000 0.500 (Aperture stop S) 15 0.0000 0.500 (Aperture stop S)
16 32.0000 3.500 54.66 1.72916 16 32.0000 3.500 54.66 1.72916
17 -631.6375 0.100 17 -631.6375 0.100
18 21.1207 4.000 82.52 1.49782 18 21.1207 4.000 82.52 1.49782
19 248.3602 1.000 37.17 1.83400 19 248.3602 1.000 37.17 1.83400
20 28.9425 3.000 20 28.9425 3.000
21 49.5392 3.000 49.52 1.74442 21 49.5392 3.000 49.52 1.74442
22 -39.8231 1.000 23.78 1.84666 22 -39.8231 1.000 23.78 1.84666
23 -121.9266 3.000 23 -121.9266 3.000
24 -26.5552 1.000 42.72 1.83481 24-26.5552 1.000 42.72 1.83481
25 -220.0557 D3 25 -220.0557 D3
26 53.1534 4.000 55.34 1.67790 26 53.1534 4.000 55.34 1.67790
27 -20.4060 0.100 27 -20.4060 0.100
28 -117.6204 4.000 33.80 1.64769 28 -117.6204 4.000 33.80 1.64769
29 -14.2583 1.000 42.72 1.83481 29 -14.2583 1.000 42.72 1.83481
30 71.3854 BF 30 71.3854 BF

(Aspheric coefficient) (Aspheric coefficient)
The lens surfaces of the sixth surface, the twenty-first surface, the twenty-sixth surface and the twenty-seventh surface are aspheric surfaces, and the aspheric coefficients are shown below. The lens surfaces of the sixth surface, the twenty-first surface, the twenty-sixth surface and the twenty-seventh surface are aspherical surfaces, and the aspheric coefficients are shown below.

Face κ C 4 C 6 C 8 C10 Face κ C 4 C 6 C 8 C 10
6 64.5192 7.6611E-07 1.7093E-09 -2.1081E-11 1.0148E-13 6 64.5192 7.6611E-07 1.7093E-09 -2.1081E-11 1.0148E-13
21 -1.0025 -5.4592E-07 -3.9750E-09 2.0368E-11 1.8147E-13 21 -1.0025 -5.4592E-07 -3.9750E-09 2.0368E-11 1.8147E-13
26 -19.8163 1.9335E-07 -2.0631E-08 1.4059E-10 0.0000E-00 26 -19.8163 1.9335E-07 -2.0631E-08 1.4059E-10 0.0000E-00
27 0.3829 6.9273E-06 -1.0557E-08 1.5108E-10 -3.9880E-13 27 0.3829 6.9273E-06 -1.0557E-08 1.5108E-10 -3.9880E-13

(Variable interval data) (Variable interval data)
The variable interval when changing the focal length is shown below. The variable interval when changing the focal length is shown below.

Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 31.169 112.180 299.993 f 31.169 112.180 299.993
D1 1.692 38.508 62.092 D1 1.692 38.508 62.092
D2 27.147 12.174 1.502 D2 27.147 12.174 1.502
D3 4.956 0.910 0.033 D3 4.956 0.910 0.033
BF 46.216 82.184 100.098 BF 46.216 82.184 100.098

(Various amounts during image shift) (Various amounts during image shift)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 31.169 112.180 299.993 f 31.169 112.180 299.993
Shift lens group travel 0.250 0.350 0.450 Shift lens group travel 0.250 0.350 0.450
Image travel 0.295 0.673 1.041 Image travel 0.295 0.673 1.041

(Values for conditional expressions) (Values ​​for conditional expressions)
(1) DT / fT = 0.207 (1) DT / fT = 0.207
(2) (1-βA) × βB = 1.2 (wide-angle end state) to 1.9 (intermediate focal length state) to 2.3 (telephoto end state) (2) (1-βA) × βB = 1.2 (wide-angle end state) to 1.9 (intermediate focal length state) to 2.3 (telephoto end state)

図2より図4は、本発明の第1実施例にかかるズームレンズの無限遠合焦状態におけるd線(波長587.6nm)での諸収差図をそれぞれ示す。図2(a)、(b)は広角端状態(f=31.2)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図3(a)、(b)は中間焦点距離状態(f=112.2)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図4(a)、(b)は望遠端状態(f=300.0)の諸収差図で、(a)は非防振時諸収差図を、(b)は防振時の横収差図をそれぞれ示している。   FIGS. 2 to 4 are graphs showing various aberrations at the d-line (wavelength 587.6 nm) in the infinitely focused state of the zoom lens according to the first example of the present invention. FIGS. 2A and 2B are graphs showing various aberrations in the wide-angle end state (f = 31.2), FIG. 2A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown. FIGS. 3A and 3B are graphs showing various aberrations in the intermediate focal length state (f = 112.2). FIG. 3A is a diagram showing various aberrations during non-vibration prevention. FIG. Respectively. FIGS. 4A and 4B are graphs showing various aberrations in the telephoto end state (f = 300.0), FIG. 4A is a diagram showing various aberrations during non-vibration prevention, and FIG. Show.

図2より図4の各収差図において、FNOはFナンバーを、Aは半画角をそれぞれ示している。球面収差図では最大口径に対するFナンバーの値を示し、非点収差図、歪曲収差図では半画角Aの最大値をそれぞれ示し、コマ収差図では各半画角Aの値を示す。また、非点収差図では実線はサジタル像面を、破線はメリディオナル像面を示している。以上の収差図の説明は、他の実施例においても同様である。   2 to 4, FNO indicates an F number, and A indicates a half angle of view. The spherical aberration diagram shows the F-number value with respect to the maximum aperture, the astigmatism diagram and the distortion diagram show the maximum value of the half field angle A, and the coma diagram shows the value of each half field angle A. In the astigmatism diagram, the solid line indicates the sagittal image plane, and the broken line indicates the meridional image plane. The explanation of the above aberration diagrams is the same in the other examples.

各収差図から、本第1実施例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は明らかである。 From each aberration diagram, it is apparent that the first embodiment has excellent imaging performance with various aberrations corrected well.

(第2実施例)
図5は、本発明の第2実施例によるズームレンズの断面図を示している。
(Second embodiment)
FIG. 5 shows a cross-sectional view of a zoom lens according to a second embodiment of the present invention.

図5において、物体側より順に、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と、正の屈折力を有する第4レンズ群G4とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群G1と前記第2レンズ群G2との間隔が増大し、前記第2レンズ群G2と前記第3レンズ群G3との間隔が減少し、前記第3レンズ群G3と前記第4レンズ群G4との間隔が減少するように、前記第1レンズ群G1乃至前記第4レンズ群G4が移動するようにズームレンズが構成されている。符号Iは、像面を示している。   In FIG. 5, 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, a third lens group G3 having a positive refractive power, and a positive When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group G1 and the second lens group G2 increases. The first lens groups G1 to G1 are arranged such that the distance between the second lens group G2 and the third lens group G3 is decreased, and the distance between the third lens group G3 and the fourth lens group G4 is decreased. The zoom lens is configured so that the fourth lens group G4 moves. Reference numeral I indicates an image plane.

また、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3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群として光軸に垂直に移動させ像シフトを可能としている。   The third lens group G3 includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power. The 3B group is moved as a shift lens group perpendicularly to the optical axis to enable image shift.

第1レンズ群G1は、物体側に凸面を向けた負メニスカスレンズL11と両凸形状の正レンズL12との接合レンズと、物体側に凸面を向けた正メニスカスレンズL13とから構成されている。   The first lens group G1 includes a cemented lens of a negative meniscus lens L11 having a convex surface facing the object side and a biconvex positive lens L12, and a positive meniscus lens L13 having a convex surface facing the object side.

第2レンズ群G2は、物体側に凸面を向けた負メニスカスレンズL21と両凹形状の負レンズL22と両凸形状の正レンズL23と両凹形状の負レンズL24とから構成されている。   The second lens group G2 includes a negative meniscus lens L21 having a convex surface directed toward the object side, a biconcave negative lens L22, a biconvex positive lens L23, and a biconcave negative lens L24.

第3レンズ群G3は、両凸形状の正レンズL31と、両凸形状の正レンズL32と両凹形状の負レンズL33との接合レンズとからなる第3A群と、両凸形状の正レンズL34と物体側に凹面を向けた負メニスカスレンズL35との接合レンズからなる第3B群と、両凹形状の負レンズL36からなる第3C群とから構成されている。   The third lens group G3 includes a biconvex positive lens L31, a third lens group consisting of a cemented lens of a biconvex positive lens L32 and a biconcave negative lens L33, and a biconvex positive lens L34. And a third B group consisting of a cemented lens with a negative meniscus lens L35 having a concave surface facing the object side, and a third C group consisting of a biconcave negative lens L36.

第4レンズ群G4は、両凸形状の正レンズL41と、物体側に凹面を向けた正メニスカスレンズL42と両凹形状の負レンズL43との接合レンズとから構成されている。 The fourth lens group G4 includes a biconvex positive lens L41, and a cemented lens of a positive meniscus lens L42 having a concave surface facing the object side and a biconcave negative lens L43.

また、開口絞りSは第3レンズ群G3の最も物体側のレンズ面の近傍に設けられ、変倍の際に第3レンズ群G3と共に移動する。 The aperture stop S is provided in the vicinity of the lens surface closest to the object side of the third lens group G3, and moves together with the third lens group G3 during zooming.

以下の表2に、本発明の第2実施例にかかるズームレンズの諸元の値を掲げる。 Table 2 below provides values of specifications of the zoom lens according to the second example of the present invention.

(表2)
(全体諸元)
広角端状態 中間焦点距離状態 望遠端状態
f 29.207 115.150 349.995
2ω 75.8 20.5 6.9°
FNO 3.6 6.0 6.7
(レンズデータ)
面番号 曲率半径 面間隔 アッベ数 屈折率
1 95.2158 2.000 28.56 1.79504
2 62.6157 8.200 82.52 1.49782
3 -924.0888 0.100
4 73.6118 5.000 82.52 1.49782
5 303.8324 D1
6 119.3054 0.200 38.09 1.55389
7 100.0000 1.200 49.61 1.77250
18 18.8047 6.417

19 -48.2046 1.000 42.72 1.83481 19 -48.2046 1.000 42.72 1.83481
10 65.6505 0.100 10 65.6505 0.100
11 34.8008 4.800 22.76 1.80809 11 34.8008 4.800 22.76 1.80809
12 -44.4934 1.000 12 -44.4934 1.000
13 -24.5572 1.000 49.61 1.77250 13 -24.5572 1.000 49.61 1.77250
14 1817.3930 D2 14 1817.3930 D2
15 0.0000 0.500 (開口絞りS) 15 0.0000 0.500 (Aperture aperture S)
16 27.1464 4.500 55.52 1.69680 16 27.1464 4.500 55.52 1.69680
17 -150.2724 0.100 17 -150.2724 0.100
18 26.8350 5.000 82.52 1.49782 18 26.8350 5.000 82.52 1.49782
19 -46.9911 1.000 37.17 1.83400 19 -46.9911 1.000 37.17 1.83400
20 38.4531 3.000 20 38.4531 3.000
21 45.1473 3.800 49.52 1.74442 21 45.1473 3.800 49.52 1.74442
22 -68.3823 1.000 23.78 1.84666 22 -68.3823 1.000 23.78 1.84666
23 -181.6270 2.000 23 -181.6270 2.000
24 -36.5030 1.000 42.72 1.83481 24 -36.5030 1.000 42.72 1.83481
25 357.3702 D3 25 357.3702 D3
26 60.3036 4.200 55.52 1.69680 26 60.3036 4.200 55.52 1.69680
27 -24.3217 0.100 27 -24.3217 0.100
28 -83.5169 5.500 33.80 1.64769 28 -83.5169 5.500 33.80 1.64769
29 -13.7618 1.000 42.72 1.83481 29 -13.7618 1.000 42.72 1.83481
30 144.8077 BF 30 144.8077 BF
(非球面係数) (Aspherical coefficient)
第6面、第21面、第26面、および第27面の各レンズ面は非球面であり、以下に非球面係数を示す。 Each lens surface of the sixth surface, the 21st surface, the 26th surface, and the 27th surface is an aspherical surface, and the aspherical surface coefficient is shown below.

面 κ C 4 C 6 C 8 C10 Surface κ C 4 C 6 C 8 C 10
6 40.8477 8.7927E-07 -1.6679E-09 -7.6432E-12 1.0148E-13 6 40.8477 8.7927E-07 -1.6679E-09 -7.6432E-12 1.0148E-13
21 0.3574 -3.3903E-06 9.1445E-09 -2.4850E-11 0.0000E-00 21 0.3574 -3.3903E-06 9.1445E-09 -2.4850E-11 0.0000E-00
26 -0.5113 -8.1127E-06 -3.1018E-08 1.8406E-10 0.0000E-00 26 -0.5113 -8.1127E-06 -3.1018E-08 1.8406E-10 0.0000E-00
27 2.0550 2.1909E-05 -1.2389E-08 2.0864E-10 0.0000E-00 27 2.0550 2.1909E-05 -1.2389E-08 2.0864E-10 0.0000E-00

(可変間隔データ) (Variable interval data)
焦点距離を変化させる際の可変間隔を以下に示す。 The variable interval when changing the focal length is shown below.

望遠端状態 中間焦点距離状態 広角端状態Telephoto end state Intermediate focal length state Wide-angle end state
f 29.207 115.150 349.995 f 29.207 115.150 349.995
D1 1.400 38.416 62.500 D1 1.400 38.416 62.500
D2 27.734 12.761 2.089 D2 27.734 12.761 2.089
D3 5.892 1.846 0.970 D3 5.892 1.846 0.970
BF 43.781 86.842 112.269 BF 43.781 86.842 112.269

(像シフト時の諸量) (Amounts when shifting images)
広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 29.207 115.150 349.995 f 29.207 115.150 349.995
シフトレンズ群の移動量 0.250 0.350 0.450 Movement amount of shift lens group 0.250 0.350 0.450
像の移動量 0.296 0.724 1.178 Image movement 0.296 0.724 1.178

(条件式対応値) (Conditional expression corresponding value)
(1) DT/fT = 0.179 (1) DT / fT = 0.179
(2) (1−βA)×βB =1.2(広角端状態)〜2.1(中間焦点距離状態)〜2.6(望遠端状態) (Table 2) (2) (1-βA) x βB = 1.2 (wide-angle end state) to 2.1 (intermediate focal length state) to 2.6 (telephoto end state) (Table 2)
(Overall specifications) (Overall specifications)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 29.207 115.150 349.995 f 29.207 115.150 349.995
2ω 75.8 20.5 6.9 ° 2ω 75.8 20.5 6.9 °
FNO 3.6 6.0 6.7 FNO 3.6 6.0 6.7
(Lens data) (Lens data)
Surface number Curvature radius Surface spacing Abbe number Refractive index Surface number Curvature radius Surface spacing Abbe number Refractive index
1 95.2158 2.000 28.56 1.79504 1 95.2158 2.000 28.56 1.79504
2 62.6157 8.200 82.52 1.49782 2 62.6157 8.200 82.52 1.49782
3 -924.0888 0.100 3 -924.0888 0.100
4 73.6118 5.000 82.52 1.49782 4 73.6118 5.000 82.52 1.49782
5 303.8324 D1 5 303.8324 D1
6 119.3054 0.200 38.09 1.55389 6 119.3054 0.200 38.09 1.55389
7 100.0000 1.200 49.61 1.77250 7 100.0000 1.200 49.61 1.77250
18 18.8047 6.417 18 18.8047 6.417
19 -48.2046 1.000 42.72 1.83481 19 -48.2046 1.000 42.72 1.83481
10 65.6505 0.100 10 65.6505 0.100
11 34.8008 4.800 22.76 1.80809 11 34.8008 4.800 22.76 1.80809
12 -44.4934 1.000 12 -44.4934 1.000
13 -24.5572 1.000 49.61 1.77250 13 -24.5572 1.000 49.61 1.77250
14 1817.3930 D2 14 1817.3930 D2
15 0.0000 0.500 (Aperture stop S) 15 0.0000 0.500 (Aperture stop S)
16 27.1464 4.500 55.52 1.69680 16 27.1464 4.500 55.52 1.69680
17 -150.2724 0.100 17 -150.2724 0.100
18 26.8350 5.000 82.52 1.49782 18 26.8350 5.000 82.52 1.49782
19 -46.9911 1.000 37.17 1.83400 19 -46.9911 1.000 37.17 1.83400
20 38.4531 3.000 20 38.4531 3.000
21 45.1473 3.800 49.52 1.74442 21 45.1473 3.800 49.52 1.74442
22 -68.3823 1.000 23.78 1.84666 22 -68.3823 1.000 23.78 1.84666
23 -181.6270 2.000 23 -181.6270 2.000
24 -36.5030 1.000 42.72 1.83481 24 -36.5030 1.000 42.72 1.83481
25 357.3702 D3 25 357.3702 D3
26 60.3036 4.200 55.52 1.69680 26 60.3036 4.200 55.52 1.69680
27 -24.3217 0.100 27 -24.3217 0.100
28 -83.5169 5.500 33.80 1.64769 28 -83.5169 5.500 33.80 1.64769
29 -13.7618 1.000 42.72 1.83481 29 -13.7618 1.000 42.72 1.83481
30 144.8077 BF 30 144.8077 BF
(Aspheric coefficient) (Aspheric coefficient)
The lens surfaces of the sixth surface, the twenty-first surface, the twenty-sixth surface, and the twenty-seventh surface are aspheric surfaces, and the aspheric coefficients are shown below. The lens surfaces of the sixth surface, the twenty-first surface, the twenty-sixth surface, and the twenty-seventh surface are aspheric surfaces, and the aspheric coefficients are shown below.

Face κ C 4 C 6 C 8 C10 Face κ C 4 C 6 C 8 C 10
6 40.8477 8.7927E-07 -1.6679E-09 -7.6432E-12 1.0148E-13 6 40.8477 8.7927E-07 -1.6679E-09 -7.6432E-12 1.0148E-13
21 0.3574 -3.3903E-06 9.1445E-09 -2.4850E-11 0.0000E-00 21 0.3574 -3.3903E-06 9.1445E-09 -2.4850E-11 0.0000E-00
26 -0.5113 -8.1127E-06 -3.1018E-08 1.8406E-10 0.0000E-00 26 -0.5113 -8.1127E-06 -3.1018E-08 1.8406E-10 0.0000E-00
27 2.0550 2.1909E-05 -1.2389E-08 2.0864E-10 0.0000E-00 27 2.0550 2.1909E-05 -1.2389E-08 2.0864E-10 0.0000E-00

(Variable interval data) (Variable interval data)
The variable interval when changing the focal length is shown below. The variable interval when changing the focal length is shown below.

Telephoto end state Intermediate focal length state Wide-angle end state Telephoto end state Intermediate focal length state Wide-angle end state
f 29.207 115.150 349.995 f 29.207 115.150 349.995
D1 1.400 38.416 62.500 D1 1.400 38.416 62.500
D2 27.734 12.761 2.089 D2 27.734 12.761 2.089
D3 5.892 1.846 0.970 D3 5.892 1.846 0.970
BF 43.781 86.842 112.269 BF 43.781 86.842 112.269

(Various amounts during image shift) (Various amounts during image shift)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 29.207 115.150 349.995 f 29.207 115.150 349.995
Shift lens group travel 0.250 0.350 0.450 Shift lens group travel 0.250 0.350 0.450
Image travel 0.296 0.724 1.178 Image travel 0.296 0.724 1.178

(Values for conditional expressions) (Values ​​for conditional expressions)
(1) DT / fT = 0.179 (1) DT / fT = 0.179
(2) (1-βA) × βB = 1.2 (wide-angle end state) to 2.1 (intermediate focal length state) to 2.6 (telephoto end state) (2) (1-βA) × βB = 1.2 (wide-angle end state) to 2.1 (intermediate focal length state) to 2.6 (telephoto end state)

図6より図8は、本発明の第2実施例にかかるズームレンズの無限遠合焦状態におけるd線(波長587.6nm)での諸収差図をそれぞれ示す。図6(a)、(b)は広角端状態(f=29.2)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図7(a)、(b)は中間焦点距離状態(f=115.2)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図8(a)、(b)は望遠端状態(f=350.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。   6 to 8 are graphs showing various aberrations at the d-line (wavelength 587.6 nm) in the infinitely focused state of the zoom lens according to the second example of the present invention. FIGS. 6A and 6B are graphs showing various aberrations in the wide-angle end state (f = 29.2), FIG. 6A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown. FIGS. 7A and 7B are graphs showing various aberrations in the intermediate focal length state (f = 115.2), FIG. 7A is a diagram showing various aberrations at the time of non-vibration prevention, and FIG. Respectively. 8A and 8B are graphs showing various aberrations in the telephoto end state (f = 350.0), FIG. 8A is a diagram showing various aberrations during non-vibration prevention, and FIG. 8B is a diagram showing lateral aberrations during vibration isolation. Each is shown.

各収差図から、本第2実施例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は明らかである。 From each aberration diagram, it is clear that the second embodiment has excellent imaging performance with various aberrations corrected well.

(第3実施例)
図9は、本発明の第3実施例によるズームレンズの断面図を示している。
(Third embodiment)
FIG. 9 shows a sectional view of a zoom lens according to the third embodiment of the present invention.

図9において、物体側より順に、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と、正の屈折力を有する第4レンズ群G4とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群G1と前記第2レンズ群G2との間隔が増大し、前記第2レンズ群G2と前記第3レンズ群G3との間隔が減少し、前記第3レンズ群G3と前記第4レンズ群G4との間隔が減少するように、前記第1レンズ群G1乃至前記第4レンズ群G4が移動するようにズームレンズが構成されている。符号Iは、像面を示している。   In FIG. 9, 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, a third lens group G3 having a positive refractive power, and a positive When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group G1 and the second lens group G2 increases. The first lens groups G1 to G1 are arranged such that the distance between the second lens group G2 and the third lens group G3 is decreased, and the distance between the third lens group G3 and the fourth lens group G4 is decreased. The zoom lens is configured so that the fourth lens group G4 moves. Reference numeral I indicates an image plane.

また、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3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群として光軸に垂直に移動させ像シフトを可能としている。   The third lens group G3 includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power. The 3B group is moved as a shift lens group perpendicularly to the optical axis to enable image shift.

第1レンズ群G1は、物体側に凸面を向けた負メニスカスレンズL11と両凸形状の正レンズL12との接合レンズと、物体側に凸面を向けた正メニスカスレンズL13とから構成されている。   The first lens group G1 includes a cemented lens of a negative meniscus lens L11 having a convex surface facing the object side and a biconvex positive lens L12, and a positive meniscus lens L13 having a convex surface facing the object side.

第2レンズ群G2は、物体側に凸面を向けた負メニスカスレンズL21と両凹形状の負レンズL22と両凸形状の正レンズL23と両凹形状の負レンズL24とから構成されている。   The second lens group G2 includes a negative meniscus lens L21 having a convex surface directed toward the object side, a biconcave negative lens L22, a biconvex positive lens L23, and a biconcave negative lens L24.

第3レンズ群G3は、両凸形状の正レンズL31と、両凸形状の正レンズL32と両凹形状の負レンズL33との接合レンズとからなる第3A群と、両凸形状の正レンズL34と物体側に凹面を向けた負メニスカスレンズL35との接合レンズからなる第3B群と、両凹形状の負レンズL36からなる第3C群とから構成されている。   The third lens group G3 includes a biconvex positive lens L31, a third lens group consisting of a cemented lens of a biconvex positive lens L32 and a biconcave negative lens L33, and a biconvex positive lens L34. And a third B group consisting of a cemented lens with a negative meniscus lens L35 having a concave surface facing the object side, and a third C group consisting of a biconcave negative lens L36.

第4レンズ群G4は、両凸形状の正レンズL41と、物体側に凹面を向けた正メニスカスレンズL42と両凹形状の負レンズL43との接合レンズとから構成されている。 The fourth lens group G4 includes a biconvex positive lens L41, and a cemented lens of a positive meniscus lens L42 having a concave surface facing the object side and a biconcave negative lens L43.

また、開口絞りSは第3レンズ群G3の最も物体側のレンズ面の近傍に設けられ、変倍の際に第3レンズ群G3と共に移動する。 The aperture stop S is provided in the vicinity of the lens surface closest to the object side of the third lens group G3, and moves together with the third lens group G3 during zooming.

以下の表3に、本発明の第3実施例にかかるズームレンズの諸元の値を掲げる。 Table 3 below provides values of specifications of the zoom lens according to the third example of the present invention.

(表3)
(全体諸元)
広角端状態 中間焦点距離状態 望遠端状態
f 30.785 100.428 260.003
2ω 73.0 23.4 9.2°
FNO 3.6 5.2 6.2
(レンズデータ)
面番号 曲率半径 面間隔 アッベ数 屈折率
1 113.0938 2.000 23.78 1.84666
2 77.8725 7.500 82.52 1.49782
3 -392.0046 0.100
4 63.1691 4.500 82.52 1.49782
5 144.9233 D1
6 187.1436 0.200 38.09 1.55389
7 160.7200 1.200 49.61 1.77250
8 19.5404 6.200

9 -57.2837 1.000 42.72 1.83481 9 -57.2837 1.000 42.72 1.83481
10 89.0734 0.100 10 89.0734 0.100
11 35.5271 4.500 23.78 1.84666 11 35.5271 4.500 23.78 1.84666
12 -48.5191 1.000 12 -48.5191 1.000
13 -27.5498 1.000 49.61 1.77250 13 -27.5498 1.000 49.61 1.77250
14 274.0976 D2 14 274.0976 D2
15 0.0000 0.500 (開口絞りS) 15 0.0000 0.500 (Aperture aperture S)
16 30.0000 4.000 55.34 1.67790 16 30.0000 4.000 55.34 1.67790
17 -79.6551 0.100 17 -79.6551 0.100
18 21.4733 4.500 82.52 1.49782 18 21.4733 4.500 82.52 1.49782
19 -131.3788 1.000 37.17 1.83400 19 -131.3788 1.000 37.17 1.83400
20 29.5229 2.500 20 29.5229 2.500
21 46.6074 3.200 49.52 1.74442 21 46.6074 3.200 49.52 1.74442
22 -50.5322 1.000 23.78 1.84666 22 -50.5322 1.000 23.78 1.84666
23 -178.5738 2.500 23 -178.5738 2.500
24 -27.8094 1.000 42.72 1.83481 24-27.8094 1.000 42.72 1.83481
25 143.2554 D3 25 143.2554 D3
26 87.3995 4.500 55.34 1.67790 26 87.3995 4.500 55.34 1.67790
27 -21.0343 0.200 27 -21.0343 0.200
28 -102.6584 5.000 34.47 1.63980 28 -102.6584 5.000 34.47 1.63980
29 -14.3797 1.000 42.72 1.83481 29 -14.3797 1.000 42.72 1.83481
30 459.5424 BF 30 459.5424 BF

(非球面係) (Aspherical surface)
第6面、第21面、第26面、および第27面の各レンズ面は非球面であり、以下に非球面係数を示す。 Each lens surface of the sixth surface, the 21st surface, the 26th surface, and the 27th surface is an aspherical surface, and the aspherical surface coefficient is shown below.

面 κ C 4 C 6 C 8 C10 Surface κ C 4 C 6 C 8 C 10
6 1.0000 3.4488E-06 3.5836E-09 -1.8482E-11 1.2823E-13 6 1.0000 3.4488E-06 3.5836E-09 -1.8482E-11 1.2823E-13
21 -5.3475 3.9544E-06 -2.1153E-09 1.2308E-11 1.8147E-13 21 -5.3475 3.9544E-06 -2.1153E-09 1.2308E-11 1.8147E-13
26 -18.7137 -9.3928E-06 -7.6348E-09 1.4059E-10 0.0000E-00 26 -18.7137 -9.3928E-06 -7.6348E-09 1.4059E-10 0.0000E-00
27 0.7025 4.8101E-06 -1.1899E-08 1.9145E-10 -3.9880E-13 27 0.7025 4.8101E-06 -1.1899E-08 1.9145E-10 -3.9880E-13

(可変間隔データ) (Variable interval data)
焦点距離を変化させる際の可変間隔を以下に示す。 The variable interval when changing the focal length is shown below.

広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 30.785 100.428 260.003 f 30.785 100.428 260.003
D1 1.791 38.386 61.905 D1 1.791 38.386 61.905
D2 28.018 13.045 2.372 D2 28.018 13.045 2.372
D3 6.467 2.421 1.544 D3 6.467 2.421 1.544
BF 42.136 72.054 90.192 BF 42.136 72.054 90.192

(像シフト時の諸量) (Amounts when shifting images)
広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 30.785 100.428 260.003 f 30.785 100.428 260.003
シフトレンズ群の移動量 0.250 0.350 0.450 Movement amount of shift lens group 0.250 0.350 0.450
像の移動量 0.268 0.574 0.902 Image movement 0.268 0.574 0.902

(条件式対応値) (Conditional expression corresponding value)
(1) DT/fT = 0.238 (1) DT / fT = 0.238
(2) (1−βA)×βB =1.1(広角端状態)〜1.6(中間焦点距離状態)〜2.0(望遠端状態) (Table 3) (2) (1-βA) x βB = 1.1 (wide-angle end state) to 1.6 (intermediate focal length state) to 2.0 (telephoto end state) (Table 3)
(Overall specifications) (Overall specifications)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 30.785 100.428 260.003 f 30.785 100.428 260.003
2ω 73.0 23.4 9.2 ° 2ω 73.0 23.4 9.2 °
FNO 3.6 5.2 6.2 FNO 3.6 5.2 6.2
(Lens data) (Lens data)
Surface number Curvature radius Surface spacing Abbe number Refractive index Surface number Curvature radius Surface spacing Abbe number Refractive index
1 113.0938 2.000 23.78 1.84666 1 113.0938 2.000 23.78 1.84666
2 77.8725 7.500 82.52 1.49782 2 77.8725 7.500 82.52 1.49782
3 -392.0046 0.100 3 -392.0046 0.100
4 63.1691 4.500 82.52 1.49782 4 63.1691 4.500 82.52 1.49782
5 144.9233 D1 5 144.9233 D1
6 187.1436 0.200 38.09 1.55389 6 187.1436 0.200 38.09 1.55389
7 160.7200 1.200 49.61 1.77250 7 160.7200 1.200 49.61 1.77250
8 19.5404 6.200 8 19.5404 6.200
9 -57.2837 1.000 42.72 1.83481 9 -57.2837 1.000 42.72 1.83481
10 89.0734 0.100 10 89.0734 0.100
11 35.5271 4.500 23.78 1.84666 11 35.5271 4.500 23.78 1.84666
12 -48.5191 1.000 12 -48.5191 1.000
13 -27.5498 1.000 49.61 1.77250 13 -27.5498 1.000 49.61 1.77250
14 274.0976 D2 14 274.0976 D2
15 0.0000 0.500 (Aperture stop S) 15 0.0000 0.500 (Aperture stop S)
16 30.0000 4.000 55.34 1.67790 16 30.0000 4.000 55.34 1.67790
17 -79.6551 0.100 17 -79.6551 0.100
18 21.4733 4.500 82.52 1.49782 18 21.4733 4.500 82.52 1.49782
19 -131.3788 1.000 37.17 1.83400 19 -131.3788 1.000 37.17 1.83400
20 29.5229 2.500 20 29.5229 2.500
21 46.6074 3.200 49.52 1.74442 21 46.6074 3.200 49.52 1.74442
22 -50.5322 1.000 23.78 1.84666 22 -50.5322 1.000 23.78 1.84666
23 -178.5738 2.500 23 -178.5738 2.500
24 -27.8094 1.000 42.72 1.83481 24-27.8094 1.000 42.72 1.83481
25 143.2554 D3 25 143.2554 D3
26 87.3995 4.500 55.34 1.67790 26 87.3995 4.500 55.34 1.67790
27 -21.0343 0.200 27 -21.0343 0.200
28 -102.6584 5.000 34.47 1.63980 28 -102.6584 5.000 34.47 1.63980
29 -14.3797 1.000 42.72 1.83481 29 -14.3797 1.000 42.72 1.83481
30 459.5424 BF 30 459.5424 BF

(Aspherical) (Aspherical)
The lens surfaces of the sixth surface, the twenty-first surface, the twenty-sixth surface, and the twenty-seventh surface are aspheric surfaces, and the aspheric coefficients are shown below. The lens surfaces of the sixth surface, the twenty-first surface, the twenty-sixth surface, and the twenty-seventh surface are aspheric surfaces, and the aspheric coefficients are shown below.

Face κ C 4 C 6 C 8 C10 Face κ C 4 C 6 C 8 C 10
6 1.0000 3.4488E-06 3.5836E-09 -1.8482E-11 1.2823E-13 6 1.0000 3.4488E-06 3.5836E-09 -1.8482E-11 1.2823E-13
21 -5.3475 3.9544E-06 -2.1153E-09 1.2308E-11 1.8147E-13 21 -5.3475 3.9544E-06 -2.1153E-09 1.2308E-11 1.8147E-13
26 -18.7137 -9.3928E-06 -7.6348E-09 1.4059E-10 0.0000E-00 26 -18.7137 -9.3928E-06 -7.6348E-09 1.4059E-10 0.0000E-00
27 0.7025 4.8101E-06 -1.1899E-08 1.9145E-10 -3.9880E-13 27 0.7025 4.8101E-06 -1.1899E-08 1.9145E-10 -3.9880E-13

(Variable interval data) (Variable interval data)
The variable interval when changing the focal length is shown below. The variable interval when changing the focal length is shown below.

Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 30.785 100.428 260.003 f 30.785 100.428 260.003
D1 1.791 38.386 61.905 D1 1.791 38.386 61.905
D2 28.018 13.045 2.372 D2 28.018 13.045 2.372
D3 6.467 2.421 1.544 D3 6.467 2.421 1.544
BF 42.136 72.054 90.192 BF 42.136 72.054 90.192

(Various amounts during image shift) (Various amounts during image shift)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 30.785 100.428 260.003 f 30.785 100.428 260.003
Shift lens group travel 0.250 0.350 0.450 Shift lens group travel 0.250 0.350 0.450
Image travel 0.268 0.574 0.902 Image travel 0.268 0.574 0.902

(Values for conditional expressions) (Values ​​for conditional expressions)
(1) DT / fT = 0.238 (1) DT / fT = 0.238
(2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.6 (intermediate focal length state) to 2.0 (telephoto end state) (2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.6 (intermediate focal length state) to 2.0 (telephoto end state)

図10より図12は、本発明の第3実施例にかかるズームレンズの無限遠合焦状態におけるd線(波長587.6nm)での諸収差図をそれぞれ示す。図10(a)、(b)は広角端状態(f=30.8)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図11(a)、(b)は中間焦点距離状態(f=100.4)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図12(a)、(b)は望遠端状態(f=260.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。   10 to 12 are graphs showing various aberrations at the d-line (wavelength 587.6 nm) in the infinitely focused state of the zoom lens according to the third example of the present invention. FIGS. 10A and 10B are graphs showing various aberrations in the wide-angle end state (f = 30.8), FIG. 10A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown. FIGS. 11A and 11B are graphs showing various aberrations in the intermediate focal length state (f = 100.4), FIG. 11A is a diagram showing various aberrations during non-vibration prevention, and FIG. Respectively. FIGS. 12A and 12B are graphs showing various aberrations in the telephoto end state (f = 260.0), FIG. 12A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown.

各収差図から、本第3実施例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は明らかである。 From each aberration diagram, it is apparent that the third embodiment has excellent imaging performance with various aberrations corrected well.

(第4実施例)
図13は、本発明の第4実施例によるズームレンズの断面図を示している。
(Fourth embodiment)
FIG. 13 is a sectional view of a zoom lens according to the fourth embodiment of the present invention.

図13において、物体側より順に、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と、正の屈折力を有する第4レンズ群G4とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群G1と前記第2レンズ群G2との間隔が増大し、前記第2レンズ群G2と前記第3レンズ群G3との間隔が減少し、前記第3レンズ群G3と前記第4レンズ群G4との間隔が減少するように、前記第1レンズ群G1乃至前記第4レンズ群G4が移動するようにズームレンズが構成されている。符号Iは、像面を示している。   In FIG. 13, 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, a third lens group G3 having a positive refractive power, and a positive When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group G1 and the second lens group G2 increases. The first lens groups G1 to G1 are arranged such that the distance between the second lens group G2 and the third lens group G3 is decreased, and the distance between the third lens group G3 and the fourth lens group G4 is decreased. The zoom lens is configured so that the fourth lens group G4 moves. Reference numeral I indicates an image plane.

また、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3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群として光軸に垂直に移動させ像シフトを可能としている。   The third lens group G3 includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power. The 3B group is moved as a shift lens group perpendicularly to the optical axis to enable image shift.

第1レンズ群G1は、物体側に凸面を向けた負メニスカスレンズL11と両凸形状の正レンズL12との接合レンズと、物体側に凸面を向けた正メニスカスレンズL13とから構成されている。   The first lens group G1 includes a cemented lens of a negative meniscus lens L11 having a convex surface facing the object side and a biconvex positive lens L12, and a positive meniscus lens L13 having a convex surface facing the object side.

第2レンズ群G2は、物体側に凸面を向けた負メニスカスレンズL21と両凹形状の負レンズL22と両凸形状の正レンズL23と両凹形状の負レンズL24とから構成されている。   The second lens group G2 includes a negative meniscus lens L21 having a convex surface directed toward the object side, a biconcave negative lens L22, a biconvex positive lens L23, and a biconcave negative lens L24.

第3レンズ群G3は、両凸形状の正レンズL31と、両凸形状の正レンズL32と両凹形状の負レンズL33との接合レンズとからなる第3A群と、両凸形状の正レンズL34と物体側に凹面を向けた負メニスカスレンズL35との接合レンズからなる第3B群と、両凹形状の負レンズL36からなる第3C群とから構成されている。   The third lens group G3 includes a biconvex positive lens L31, a third lens group consisting of a cemented lens of a biconvex positive lens L32 and a biconcave negative lens L33, and a biconvex positive lens L34. And a third B group consisting of a cemented lens with a negative meniscus lens L35 having a concave surface facing the object side, and a third C group consisting of a biconcave negative lens L36.

第4レンズ群G4は、両凸形状の正レンズL41と、物体側に凹面を向けた正メニスカスレンズL42と両凹形状の負レンズL43との接合レンズとから構成されている。 The fourth lens group G4 includes a biconvex positive lens L41, and a cemented lens of a positive meniscus lens L42 having a concave surface facing the object side and a biconcave negative lens L43.

また、開口絞りSは第3レンズ群G3の最も物体側のレンズ面の近傍に設けられ、変倍の際に第3レンズ群G3と共に移動する。 The aperture stop S is provided in the vicinity of the lens surface closest to the object side of the third lens group G3, and moves together with the third lens group G3 during zooming.

以下の表4に本発明の第4実施例にかかるズームレンズの諸元の値を掲げる。 Table 4 below provides values of specifications of the zoom lens according to the fourth example of the present invention.

(表4)
(全体諸元)
広角端状態 中間焦点距離状態 望遠端状態
f 29.000 105.000 288.000
2ω 76.0 22.4 8.3°
FNO 3.6 5.4 5.9
(レンズデータ)
面番号 曲率半径 面間隔 アッベ数 屈折率
1 126.4186 2.000 32.35 1.85026
2 70.0034 8.500 82.52 1.49782
3 -481.5412 0.100
4 61.9364 6.300 82.52 1.49782
5 326.2642 D1
6 206.3466 0.200 38.09 1.55389
7 155.0000 1.200 49.61 1.77250
8 19.2055 6.400

9 -48.3934 1.000 42.72 1.83481 9 -48.3934 1.000 42.72 1.83481
10 89.2606 0.100 10 89.2606 0.100
11 36.1705 4.800 23.78 1.84666 11 36.1705 4.800 23.78 1.84666
12 -41.8254 1.000 12 -41.8254 1.000
13 -25.8295 1.000 49.61 1.77250 13 -25.8295 1.000 49.61 1.77250
14 197.7146 D2 14 197.7146 D2
15 0.0000 0.500 (開口絞りS) 15 0.0000 0.500 (Aperture aperture S)
16 28.1052 4.500 55.34 1.67790 16 28.1052 4.500 55.34 1.67790
17 -110.1068 0.100 17 -110.1068 0.100
18 27.8213 5.000 82.52 1.49782 18 27.8213 5.000 82.52 1.49782
19 -58.2729 1.000 37.17 1.83400 19 -58.2729 1.000 37.17 1.83400
20 41.8777 3.800 20 41.8777 3.800
21 42.5913 3.800 49.16 1.74001 21 42.5913 3.800 49.16 1.74001
22 -57.2086 1.000 23.78 1.84666 22 -57.2086 1.000 23.78 1.84666
23 -230.3293 2.700 23 -230.3293 2.700
24 -30.2739 1.000 42.72 1.83481 24 -30.2739 1.000 42.72 1.83481
25 217.1532 D3 25 217.1532 D3
26 55.2978 5.800 54.61 1.67440 26 55.2978 5.800 54.61 1.67440
27 -24.3191 0.150 27 -24.3191 0.150
28 -82.9547 6.500 34.47 1.63980 28 -82.9547 6.500 34.47 1.63980
29 -14.5022 1.000 42.72 1.83481 29 -14.5022 1.000 42.72 1.83481
30 499.5854 BF 30 499.5854 BF

(非球面係数) (Aspherical coefficient)
6面、21面、26面、および27面の各レンズ面は非球面であり、以下に非球面係数を示す。 The 6th, 21st, 26th, and 27th lens surfaces are aspherical, and the aspherical coefficients are shown below.

面 κ C 4 C 6 C 8 C10 Surface κ C 4 C 6 C 8 C 10
6 1.0000 4.0183E-06 4.0686E-09 -2.4754E-11 1.5099E-13 6 1.0000 4.0183E-06 4.0686E-09 -2.4754E-11 1.5099E-13
21 -0.4310 -1.3165E-07 -4.2138E-09 3.4757E-11 1.0724E-13 21 -0.4310 -1.3165E-07 -4.2138E-09 3.4757E-11 1.0724E-13
26 -12.7409 9.5672E-07 -4.9808E-09 1.4920E-10 0.0000E-00 26 -12.7409 9.5672E-07 -4.9808E-09 1.4920E-10 0.0000E-00
27 0.1485 5.5835E-06 -1.4084E-08 2.1151E-10 -4.0383E-13 27 0.1485 5.5835E-06 -1.4084E-08 2.1151E-10 -4.0383E-13

(可変間隔データ) (Variable interval data)
焦点距離を変化させる際の可変間隔を以下に示す。 The variable interval when changing the focal length is shown below.

広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 29.000 105.000 288.000 f 29.000 105.000 288.000
D1 1.813 16.856 61.926 D1 1.813 16.856 61.926
D2 27.746 19.801 2.100 D2 27.746 19.801 2.100
D3 5.887 3.883 0.965 D3 5.887 3.883 0.965
BF 39.504 54.503 89.559 BF 39.504 54.503 89.559

(像シフト時の諸量) (Amounts when shifting images)
広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 29.000 105.000 288.000 f 29.000 105.000 288.000
シフトレンズ群の移動量 0.250 0.350 0.450 Movement amount of shift lens group 0.250 0.350 0.450
像の移動量 0.277 0.632 0.960 Image movement 0.277 0.632 0.960

(条件式対応値) (Conditional expression corresponding value)
(1) DT/fT = 0.179 (1) DT / fT = 0.179
(2) (1−βA)×βB =1.1(広角端状態)〜1.8(中間焦点距離状態)〜2.1(望遠端状態) (Table 4) (2) (1-βA) x βB = 1.1 (wide-angle end state) to 1.8 (intermediate focal length state) to 2.1 (telephoto end state) (Table 4)
(Overall specifications) (Overall specifications)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 29.000 105.000 288.000 f 29.000 105.000 288.000
2ω 76.0 22.4 8.3 ° 2ω 76.0 22.4 8.3 °
FNO 3.6 5.4 5.9 FNO 3.6 5.4 5.9
(Lens data) (Lens data)
Surface number Curvature radius Surface spacing Abbe number Refractive index Surface number Curvature radius Surface spacing Abbe number Refractive index
1 126.4186 2.000 32.35 1.85026 1 126.4186 2.000 32.35 1.85026
2 70.0034 8.500 82.52 1.49782 2 70.0034 8.500 82.52 1.49782
3 -481.5412 0.100 3-481.5412 0.100
4 61.9364 6.300 82.52 1.49782 4 61.9364 6.300 82.52 1.49782
5 326.2642 D1 5 326.2642 D1
6 206.3466 0.200 38.09 1.55389 6 206.3466 0.200 38.09 1.55389
7 155.0000 1.200 49.61 1.77250 7 155.0000 1.200 49.61 1.77250
8 19.2055 6.400 8 19.2055 6.400
9 -48.3934 1.000 42.72 1.83481 9 -48.3934 1.000 42.72 1.83481
10 89.2606 0.100 10 89.2606 0.100
11 36.1705 4.800 23.78 1.84666 11 36.1705 4.800 23.78 1.84666
12 -41.8254 1.000 12 -41.8254 1.000
13 -25.8295 1.000 49.61 1.77250 13 -25.8295 1.000 49.61 1.77250
14 197.7146 D2 14 197.7146 D2
15 0.0000 0.500 (Aperture stop S) 15 0.0000 0.500 (Aperture stop S)
16 28.1052 4.500 55.34 1.67790 16 28.1052 4.500 55.34 1.67790
17 -110.1068 0.100 17 -110.1068 0.100
18 27.8213 5.000 82.52 1.49782 18 27.8213 5.000 82.52 1.49782
19 -58.2729 1.000 37.17 1.83400 19 -58.2729 1.000 37.17 1.83400
20 41.8777 3.800 20 41.8777 3.800
21 42.5913 3.800 49.16 1.74001 21 42.5913 3.800 49.16 1.74001
22 -57.2086 1.000 23.78 1.84666 22 -57.2086 1.000 23.78 1.84666
23 -230.3293 2.700 23 -230.3293 2.700
24 -30.2739 1.000 42.72 1.83481 24 -30.2739 1.000 42.72 1.83481
25 217.1532 D3 25 217.1532 D3
26 55.2978 5.800 54.61 1.67440 26 55.2978 5.800 54.61 1.67440
27 -24.3191 0.150 27 -24.3191 0.150
28 -82.9547 6.500 34.47 1.63980 28 -82.9547 6.500 34.47 1.63980
29 -14.5022 1.000 42.72 1.83481 29 -14.5022 1.000 42.72 1.83481
30 499.5854 BF 30 499.5854 BF

(Aspheric coefficient) (Aspheric coefficient)
The 6th, 21st, 26th, and 27th lens surfaces are aspherical, and the aspherical coefficients are shown below. The 6th, 21st, 26th, and 27th lens surfaces are aspherical, and the aspherical coefficients are shown below.

Face κ C 4 C 6 C 8 C10 Face κ C 4 C 6 C 8 C 10
6 1.0000 4.0183E-06 4.0686E-09 -2.4754E-11 1.5099E-13 6 1.0000 4.0183E-06 4.0686E-09 -2.4754E-11 1.5099E-13
21 -0.4310 -1.3165E-07 -4.2138E-09 3.4757E-11 1.0724E-13 21 -0.4310 -1.3165E-07 -4.2138E-09 3.4757E-11 1.0724E-13
26 -12.7409 9.5672E-07 -4.9808E-09 1.4920E-10 0.0000E-00 26 -12.7409 9.5672E-07 -4.9808E-09 1.4920E-10 0.0000E-00
27 0.1485 5.5835E-06 -1.4084E-08 2.1151E-10 -4.0383E-13 27 0.1485 5.5835E-06 -1.4084E-08 2.1151E-10 -4.0383E-13

(Variable interval data) (Variable interval data)
The variable interval when changing the focal length is shown below. The variable interval when changing the focal length is shown below.

Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 29.000 105.000 288.000 f 29.000 105.000 288.000
D1 1.813 16.856 61.926 D1 1.813 16.856 61.926
D2 27.746 19.801 2.100 D2 27.746 19.801 2.100
D3 5.887 3.883 0.965 D3 5.887 3.883 0.965
BF 39.504 54.503 89.559 BF 39.504 54.503 89.559

(Various amounts during image shift) (Various amounts during image shift)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 29.000 105.000 288.000 f 29.000 105.000 288.000
Shift lens group travel 0.250 0.350 0.450 Shift lens group travel 0.250 0.350 0.450
Image travel 0.277 0.632 0.960 Image travel 0.277 0.632 0.960

(Values for conditional expressions) (Values ​​for conditional expressions)
(1) DT / fT = 0.179 (1) DT / fT = 0.179
(2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.8 (intermediate focal length state) to 2.1 (telephoto end state) (2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.8 (intermediate focal length state) to 2.1 (telephoto end state)

図14より図16は、本発明の第4実施例にかかるズームレンズの無限遠合焦状態におけるd線(波長587.6nm)での諸収差図をそれぞれ示す。図14(a)、(b)は広角端状態(f=29.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図15(a)、(b)は中間焦点距離状態(f=105.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図16(a)、(b)は望遠端状態(f=288.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。   FIGS. 14 to 16 are graphs showing various aberrations at the d-line (wavelength 587.6 nm) in the infinitely focused state of the zoom lens according to the fourth example of the present invention. FIGS. 14A and 14B are graphs showing various aberrations in the wide-angle end state (f = 29.0), FIG. 14A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown. FIGS. 15A and 15B are graphs showing various aberrations in the intermediate focal length state (f = 105.0), FIG. 15A is a diagram showing various aberrations during non-vibration prevention, and FIG. Respectively. FIGS. 16A and 16B are graphs showing various aberrations in the telephoto end state (f = 288.0), FIG. 16A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown.

各収差図から、本第4実施例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は明らかである。 From the respective aberration diagrams, it is clear that the fourth embodiment has excellent imaging performance with various aberrations corrected well.

(第5実施例)
図17は、本発明の第5実施例によるズームレンズの断面図を示している。
(5th Example)
FIG. 17 is a sectional view of a zoom lens according to the fifth embodiment of the present invention.

図17において、物体側より順に、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と、正の屈折力を有する第4レンズ群G4とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群G1と前記第2レンズ群G2との間隔が増大し、前記第2レンズ群G2と前記第3レンズ群G3との間隔が減少し、前記第3レンズ群G3と前記第4レンズ群G4との間隔が減少するように、前記第1レンズ群G1乃至前記第4レンズ群G4が移動するようにズームレンズが構成されている。符号Iは、像面を示している。   In FIG. 17, 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, a third lens group G3 having a positive refractive power, and a positive When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group G1 and the second lens group G2 increases. The first lens groups G1 to G1 are arranged such that the distance between the second lens group G2 and the third lens group G3 is decreased, and the distance between the third lens group G3 and the fourth lens group G4 is decreased. The zoom lens is configured so that the fourth lens group G4 moves. Reference numeral I indicates an image plane.

また、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3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群として光軸に垂直に移動させ像シフトを可能としている。   The third lens group G3 includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power. The 3B group is moved as a shift lens group perpendicularly to the optical axis to enable image shift.

第1レンズ群G1は、物体側に凸面を向けた負メニスカスレンズL11と両凸形状の正レンズL12との接合レンズと、物体側に凸面を向けた正メニスカスレンズL13とから構成されている。   The first lens group G1 includes a cemented lens of a negative meniscus lens L11 having a convex surface facing the object side and a biconvex positive lens L12, and a positive meniscus lens L13 having a convex surface facing the object side.

第2レンズ群G2は、物体側に凸面を向けた負メニスカスレンズL21と両凹形状の負レンズL22と両凸形状の正レンズL23と両凹形状の負レンズL24とから構成されている。   The second lens group G2 includes a negative meniscus lens L21 having a convex surface directed toward the object side, a biconcave negative lens L22, a biconvex positive lens L23, and a biconcave negative lens L24.

第3レンズ群G3は、両凸形状の正レンズL31と、両凸形状の正レンズL32と両凹形状の負レンズL33との接合レンズとからなる第3A群と、両凸形状の正レンズL34と物体側に凹面を向けた負メニスカスレンズL35との接合レンズからなる第3B群と、両凹形状の負レンズL36からなる第3C群とから構成されている。   The third lens group G3 includes a biconvex positive lens L31, a third lens group consisting of a cemented lens of a biconvex positive lens L32 and a biconcave negative lens L33, and a biconvex positive lens L34. And a third B group consisting of a cemented lens with a negative meniscus lens L35 having a concave surface facing the object side, and a third C group consisting of a biconcave negative lens L36.

第4レンズ群G4は、両凸形状の正レンズL41と、物体側に凹面を向けた負メニスカスレンズL42とから構成されている。 The fourth lens group G4 includes a biconvex positive lens L41 and a negative meniscus lens L42 having a concave surface directed toward the object side.

また、開口絞りSは第3レンズ群G3の最も物体側のレンズ面の近傍に設けられ、変倍の際に第3レンズ群G3と共に移動する。 The aperture stop S is provided in the vicinity of the lens surface closest to the object side of the third lens group G3, and moves together with the third lens group G3 during zooming.

以下の表5に本発明の第5実施例にかかるズームレンズの諸元の値を掲げる。 Table 5 below provides values of specifications of the zoom lens according to the fifth example of the present invention.

(表5)
広角端状態 中間焦点距離状態 望遠端状態
f 28.743 99.628 289.713
2ω 77.0 23.7 8.3°
FNO 3.5 5.4 6.3
(レンズデータ)
面番号 曲率半径 面間隔 アッベ数 屈折率
1 94.4674 1.900 23.78 1.84666
2 67.7698 7.500 81.61 1.49700
3 -529.7017 0.100
4 60.3188 4.800 81.61 1.49700
5 135.6483 D1
6 111.7769 0.200 38.09 1.55389
7 105.1950 1.150 49.61 1.77250
8 16.3778 5.800

9 -44.8931 1.000 46.63 1.81600 9 -44.8931 1.000 46.63 1.81600
10 98.5517 0.100 10 98.5517 0.100
11 32.0133 4.200 22.76 1.80809 11 32.0133 4.200 22.76 1.80809
12 -49.2124 1.100 12 -49.2124 1.100
13 -27.3224 0.900 42.72 1.83481 13 -27.3224 0.900 42.72 1.83481
14 1744.7263 D2 14 1744.7263 D2
15 0.0000 0.500 (開口絞りS) 15 0.0000 0.500 (Aperture aperture S)
16 32.4669 4.500 64.14 1.51633 16 32.4669 4.500 64.14 1.51633
17 -42.3952 0.100 17 -42.3952 0.100
18 37.5370 5.000 81.61 1.49700 18 37.5370 5.000 81.61 1.49700
19 -27.2467 1.000 37.17 1.83400 19 -27.2467 1.000 37.17 1.83400
20 159.3545 3.000 20 159.3545 3.000
21 60.0000 3.500 58.54 1.65160 21 60.0000 3.500 58.54 1.65160
22 -27.9361 0.800 46.63 1.81600 22 -27.9361 0.800 46.63 1.81600
23 -57.3368 4.200 23 -57.3368 4.200
24 -36.9720 0.800 54.66 1.72916 24 -36.9720 0.800 54.66 1.72916
25 120.8635 D3 25 120.8635 D3
26 150.0000 4.500 55.18 1.66547 26 150.0000 4.500 55.18 1.66547
27 -39.3664 8.000 27 -39.3664 8.000
28 -40.0000 1.000 54.66 1.72916 28 -40.0000 1.000 54.66 1.72916
29 -62.5642 BF 29 -62.5642 BF

(非球面係数) (Aspherical coefficient)
第6面、第16面、第21面、第27面、および第28面の各レンズ面は非球面であり、以下に非球面係数を示す。 The 6th, 16th, 21st, 27th, and 28th lens planes are aspherical surfaces, and the aspherical surface coefficients are shown below.

面 κ C 4 C 6 C 8 C10 Surface κ C 4 C 6 C 8 C 10
6 6.0000 2.1440E-06 2.0424E-09 -5.7444E-11 2.0549E-13 6 6.0000 2.1440E-06 2.0424E-09 -5.7444E-11 2.0549E-13
16 0.4048 1.6192E-06 8.8809E-09 0.0000E-00 0.0000E-00 16 0.4048 1.6192E-06 8.8809E-09 0.0000E-00 0.0000E-00
21 0.1975 -1.2413E-07 4.8313E-09 0.0000E-00 0.0000E-00 21 0.1975 -1.2413E-07 4.8313E-09 0.0000E-00 0.0000E-00
27 -0.2523 7.8933E-07 4.3698E-09 1.0465E-11 0.0000E-00 27 -0.2523 7.8933E-07 4.3698E-09 1.0465E-11 0.0000E-00
28 1.5241 -6.4146E-06 -1.2538E-08 3.8377E-13 0.0000E-00 28 1.5241 -6.4146E-06 -1.2538E-08 3.8377E-13 0.0000E-00

(可変間隔データ) (Variable interval data)
焦点距離を変化させる際の可変間隔を以下に示す。 The variable interval when changing the focal length is shown below.

広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 28.743 99.628 289.713 f 28.743 99.628 289.713
D1 2.160 36.094 61.516 D1 2.160 36.094 61.516
D2 25.560 10.629 0.005 D2 25.560 10.629 0.005
D3 11.051 3.584 2.629 D3 11.051 3.584 2.629
BF 37.502 75.686 91.283 BF 37.502 75.686 91.283

(像シフト時の諸量) (Amounts when shifting images)
広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 28.743 99.628 289.713 f 28.743 99.628 289.713
シフトレンズ群の移動量 0.250 0.350 0.450 Movement amount of shift lens group 0.250 0.350 0.450
像の移動量 0.287 0.643 0.966 Image movement 0.287 0.643 0.966

(条件式対応値) (Conditional expression corresponding value)
(1) DT/fT = 0.212 (1) DT / fT = 0.212
(2) (1−βA)×βB =1.1(広角端状態)〜1.8(中間焦点距離状態)〜2.1(望遠端状態) (Table 5) (2) (1-βA) x βB = 1.1 (wide-angle end state) to 1.8 (intermediate focal length state) to 2.1 (telephoto end state) (Table 5)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 28.743 99.628 289.713 f 28.743 99.628 289.713
2ω 77.0 23.7 8.3 ° 2ω 77.0 23.7 8.3 °
FNO 3.5 5.4 6.3 FNO 3.5 5.4 6.3
(Lens data) (Lens data)
Surface number Curvature radius Surface spacing Abbe number Refractive index Surface number Curvature radius Surface spacing Abbe number Refractive index
1 94.4674 1.900 23.78 1.84666 1 94.4674 1.900 23.78 1.84666
2 67.7698 7.500 81.61 1.49700 2 67.7698 7.500 81.61 1.49700
3 -529.7017 0.100 3-529.7017 0.100
4 60.3188 4.800 81.61 1.49700 4 60.3188 4.800 81.61 1.49700
5 135.6483 D1 5 135.6483 D1
6 111.7769 0.200 38.09 1.55389 6 111.7769 0.200 38.09 1.55389
7 105.1950 1.150 49.61 1.77250 7 105.1950 1.150 49.61 1.77250
8 16.3778 5.800 8 16.3778 5.800
9 -44.8931 1.000 46.63 1.81600 9 -44.8931 1.000 46.63 1.81600
10 98.5517 0.100 10 98.5517 0.100
11 32.0133 4.200 22.76 1.80809 11 32.0133 4.200 22.76 1.80809
12 -49.2124 1.100 12 -49.2124 1.100
13 -27.3224 0.900 42.72 1.83481 13 -27.3224 0.900 42.72 1.83481
14 1744.7263 D2 14 1744.7263 D2
15 0.0000 0.500 (Aperture stop S) 15 0.0000 0.500 (Aperture stop S)
16 32.4669 4.500 64.14 1.51633 16 32.4669 4.500 64.14 1.51633
17 -42.3952 0.100 17 -42.3952 0.100
18 37.5370 5.000 81.61 1.49700 18 37.5370 5.000 81.61 1.49700
19 -27.2467 1.000 37.17 1.83400 19 -27.2467 1.000 37.17 1.83400
20 159.3545 3.000 20 159.3545 3.000
21 60.0000 3.500 58.54 1.65160 21 60.0000 3.500 58.54 1.65160
22 -27.9361 0.800 46.63 1.81600 22 -27.9361 0.800 46.63 1.81600
23 -57.3368 4.200 23 -57.3368 4.200
24 -36.9720 0.800 54.66 1.72916 24 -36.9720 0.800 54.66 1.72916
25 120.8635 D3 25 120.8635 D3
26 150.0000 4.500 55.18 1.66547 26 150.0000 4.500 55.18 1.66547
27 -39.3664 8.000 27 -39.3664 8.000
28 -40.0000 1.000 54.66 1.72916 28 -40.0000 1.000 54.66 1.72916
29 -62.5642 BF 29 -62.5642 BF

(Aspheric coefficient) (Aspheric coefficient)
The lens surfaces of the sixth surface, the sixteenth surface, the twenty-first surface, the twenty-seventh surface, and the twenty-eighth surface are aspheric surfaces, and the aspheric coefficients are shown below. The lens surfaces of the sixth surface, the sixteenth surface, the twenty-first surface, the twenty-seventh surface, and the twenty-eighth surface are aspherical surfaces, and the aspheric coefficients are shown below.

Face κ C 4 C 6 C 8 C10 Face κ C 4 C 6 C 8 C 10
6 6.0000 2.1440E-06 2.0424E-09 -5.7444E-11 2.0549E-13 6 6.0000 2.1440E-06 2.0424E-09 -5.7444E-11 2.0549E-13
16 0.4048 1.6192E-06 8.8809E-09 0.0000E-00 0.0000E-00 16 0.4048 1.6192E-06 8.8809E-09 0.0000E-00 0.0000E-00
21 0.1975 -1.2413E-07 4.8313E-09 0.0000E-00 0.0000E-00 21 0.1975 -1.2413E-07 4.8313E-09 0.0000E-00 0.0000E-00
27 -0.2523 7.8933E-07 4.3698E-09 1.0465E-11 0.0000E-00 27 -0.2523 7.8933E-07 4.3698E-09 1.0465E-11 0.0000E-00
28 1.5241 -6.4146E-06 -1.2538E-08 3.8377E-13 0.0000E-00 28 1.5241 -6.4146E-06 -1.2538E-08 3.8377E-13 0.0000E-00

(Variable interval data) (Variable interval data)
The variable interval when changing the focal length is shown below. The variable interval when changing the focal length is shown below.

Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 28.743 99.628 289.713 f 28.743 99.628 289.713
D1 2.160 36.094 61.516 D1 2.160 36.094 61.516
D2 25.560 10.629 0.005 D2 25.560 10.629 0.005
D3 11.051 3.584 2.629 D3 11.051 3.584 2.629
BF 37.502 75.686 91.283 BF 37.502 75.686 91.283

(Various amounts during image shift) (Various amounts during image shift)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 28.743 99.628 289.713 f 28.743 99.628 289.713
Shift lens group travel 0.250 0.350 0.450 Shift lens group travel 0.250 0.350 0.450
Image travel 0.287 0.643 0.966 Image travel 0.287 0.643 0.966

(Values for conditional expressions) (Values ​​for conditional expressions)
(1) DT / fT = 0.212 (1) DT / fT = 0.212
(2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.8 (intermediate focal length state) to 2.1 (telephoto end state) (2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.8 (intermediate focal length state) to 2.1 (telephoto end state)

図18より図20は、本発明の第5実施例にかかるズームレンズの無限遠合焦状態においてd線(波長587.6nm)での諸収差図をそれぞれ示す。図18(a)、(b)は広角端状態(f=28.7)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図19(a)、(b)は中間焦点距離状態(f=99.6)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図20(a)、(b)は望遠端状態(f=289.7)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。   FIGS. 18 to 20 are graphs showing various aberrations at the d-line (wavelength 587.6 nm) in the infinite focus state of the zoom lens according to the fifth example of the present invention. 18A and 18B are graphs showing various aberrations in the wide-angle end state (f = 28.7), FIG. 18A is a diagram showing various aberrations during non-vibration prevention, and FIG. 18B is a diagram showing lateral aberration during vibration isolation. Each is shown. 19A and 19B are graphs showing various aberrations in the intermediate focal length state (f = 99.6), FIG. 19A is a diagram showing various aberrations during non-vibration prevention, and FIG. Respectively. FIGS. 20A and 20B are graphs showing various aberrations in the telephoto end state (f = 289.7), FIG. 20A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown.

各収差図から、本第5実施例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は明らかである。 From the respective aberration diagrams, it is clear that the fifth embodiment has excellent imaging performance with various aberrations corrected satisfactorily.

(第6実施例)
図21は、本発明の第6実施例によるズームレンズの断面図を示している。
(Sixth embodiment)
FIG. 21 shows a sectional view of a zoom lens according to the sixth embodiment of the present invention.

図21において、物体側より順に、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と、正の屈折力を有する第4レンズ群G4とを有し、広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群G1と前記第2レンズ群G2との間隔が増大し、前記第2レンズ群G2と前記第3レンズ群G3との間隔が減少し、前記第3レンズ群G3と前記第4レンズ群G4との間隔が減少するように、前記第1レンズ群G1乃至前記第4レンズ群G4が移動するようにズームレンズが構成されている。符号Iは、像面を示している。   In FIG. 21, 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, a third lens group G3 having a positive refractive power, and a positive When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group G1 and the second lens group G2 increases. The first lens groups G1 to G1 are arranged such that the distance between the second lens group G2 and the third lens group G3 is decreased, and the distance between the third lens group G3 and the fourth lens group G4 is decreased. The zoom lens is configured so that the fourth lens group G4 moves. Reference numeral I indicates an image plane.

また、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3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、第3B群をシフトレンズ群として光軸に垂直に移動させ像シフトを可能としている。   The third lens group G3 includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power. The 3B group is moved as a shift lens group perpendicularly to the optical axis to enable image shift.

第1レンズ群G1は、物体側に凸面を向けた負メニスカスレンズL11と両凸形状の正レンズL12との接合レンズと、物体側に凸面を向けた正メニスカスレンズL13とから構成されている。   The first lens group G1 includes a cemented lens of a negative meniscus lens L11 having a convex surface facing the object side and a biconvex positive lens L12, and a positive meniscus lens L13 having a convex surface facing the object side.

第2レンズ群G2は、物体側に凸面を向けた負メニスカスレンズL21と、両凹形状の負レンズL22と、両凸形状の正レンズL23と、物体側に凹面を向けた負メニスカスレンズL24とから構成されている。   The second lens group G2 includes a negative meniscus lens L21 having a convex surface facing the object side, a biconcave negative lens L22, a biconvex positive lens L23, and a negative meniscus lens L24 having a concave surface facing the object side. It is composed of

第3レンズ群G3は、両凸形状の正レンズL31と、物体側に凸面を向けた正メニスカスレンズL32と、両凹形状の負レンズL33とからなる第3A群と、両凸形状の正レンズL34と物体側に凹面を向けた負メニスカスレンズL35との接合レンズからなる第3B群と、物体側に凹面を向けた負メニスカスレンズL36からなる第3C群とから構成されている。   The third lens group G3 includes a third convex lens L31 having a biconvex shape, a positive meniscus lens L32 having a convex surface directed toward the object side, and a negative lens L33 having a biconcave shape, and a biconvex positive lens. The third lens unit B includes a third lens unit B including a cemented lens of L 34 and a negative meniscus lens L 35 having a concave surface facing the object side, and a third lens unit C including a negative meniscus lens L 36 having a concave surface facing the object side.

第4レンズ群G4は、両凸形状の正レンズL41と、物体側に凹面を向けた正メニスカスレンズL42と物体側に凹面を向けた負メニスカスレンズL43との接合レンズとから構成されている。   The fourth lens group G4 includes a biconvex positive lens L41, a cemented lens of a positive meniscus lens L42 having a concave surface facing the object side, and a negative meniscus lens L43 having a concave surface facing the object side.

また、開口絞りSは第3レンズ群G3の最も物体側のレンズ面の近傍に設けられ、変倍の際に第3レンズ群G3と共に移動する。 The aperture stop S is provided in the vicinity of the lens surface closest to the object side of the third lens group G3, and moves together with the third lens group G3 during zooming.

以下の表6に、本発明の第6実施例にかか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 according to the sixth example of the present invention.

(表6)
(全体諸元)
広角端状態 中間焦点距離状態 望遠端状態
f 28.800 100.001 287.999

2ω 77.0 23.7 8.3° 2ω 77.0 23.7 8.3 °
FNO 3.6 5.5 5.8 FNO 3.6 5.5 5.8
(レンズデータ) (Lens data)
面番号 曲率半径 面間隔 アッベ数 屈折率Face number Radius of curvature Face spacing Abbe number Refractive index
1 115.6310 1.800 28.56 1.79504 1 115.6310 1.800 28.56 1.79504
2 71.8788 7.200 81.61 1.49700 2 71.8788 7.200 81.61 1.49700
3 -555.2835 0.100 3 -555.2835 0.100
4 65.0392 5.500 81.61 1.49700 4 65.0392 5.500 81.61 1.49700
5 232.0570 D1 5 232.0570 D1
6 512.2381 0.100 38.09 1.55389 6 512.2381 0.100 38.09 1.55389
7 180.0000 1.200 53.85 1.71300 7 180.0000 1.200 53.85 1.71300
8 18.5968 6.500 8 18.5968 6.500
9 -50.4004 1.000 42.72 1.83481 9 -50.4004 1.000 42.72 1.83481
10 63.9703 0.100 10 63.9703 0.100
11 39.9492 4.600 23.78 1.84666 11 39.9492 4.600 23.78 1.84666
12 -50.7514 1.500 12 -50.7514 1.500
13 -25.9825 0.900 49.61 1.77250 13 -25.9825 0.900 49.61 1.77250
14 -100.6446 D2 14 -100.6446 D2
15 0.0000 0.500 (開口絞りS) 15 0.0000 0.500 (Aperture aperture S)
16 22.7861 6.000 81.61 1.49700 16 22.7861 6.000 81.61 1.49700
17 -76.8308 0.100 17 -76.8308 0.100
18 27.0706 4.000 90.30 1.45600 18 27.0706 4.000 90.30 1.45600
19 304.3279 2.350 19 304.3279 2.350
20 -54.3445 0.800 40.77 1.88300 20 -54.3445 0.800 40.77 1.88300
21 95.0234 3.150 21 95.0234 3.150
22 33.1566 4.500 61.18 1.58913 22 33.1566 4.500 61.18 1.58913
23 -72.2937 0.800 23.78 1.84666 23 -72.2937 0.800 23.78 1.84666
24 -194.8570 6.700 24 -194.8570 6.700
25 -22.3588 0.800 37.17 1.83400 25 -22.3588 0.800 37.17 1.83400
26 -167.7429 D3 26 -167.7429 D3
27 730.6059 2.800 49.32 1.74320 27 730.6059 2.800 49.32 1.74320
28 -40.4002 0.100 28 -40.4002 0.100
29 -120.1675 7.400 36.26 1.62004 29 -120.1675 7.400 36.26 1.62004
30 -16.1891 1.000 46.63 1.81600 30 -16.1891 1.000 46.63 1.81600
31 -45.2280 BF 31 -45.2280 BF

(非球面係数) (Aspherical coefficient)
第6面、第22面、第28面の各レンズ面は非球面であり、非球面係数を意亜Kに示す. The 6th, 22nd, and 28th lens planes are aspherical, and the aspherical coefficient is indicated by K.A.

面 κ C 4 C 6 C 8 C10 Surface κ C 4 C 6 C 8 C 10
6 1.0000 5.6868E-06 6.5389E-09 -6.8904E-11 1.5909E-13 6 1.0000 5.6868E-06 6.5389E-09 -6.8904E-11 1.5909E-13
22 1.0000 -5.2152E-06 1.2238E-08 6.5604E-11 -4.4646E-13 22 1.0000 -5.2152E-06 1.2238E-08 6.5604E-11 -4.4646E-13
28 1.0000 1.4105E-05 3.3242E-08 -8.4679E-11 3.5821E-13 28 1.0000 1.4105E-05 3.3242E-08 -8.4679E-11 3.5821E-13

(可変間隔データ) (Variable interval data)
焦点距離を変化させる際の可変間隔を以下に示す。 The variable interval when changing the focal length is shown below.

広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 28.800 100.001 287.999 f 28.800 100.001 287.999
D1 1.528 32.944 62.211 D1 1.528 32.944 62.211
D2 33.290 14.442 2.102 D2 33.290 14.442 2.102
D3 4.508 1.422 0.946 D3 4.508 1.422 0.946
BF 38.606 82.076 93.134 BF 38.606 82.076 93.134

(像シフト時の諸量) (Amounts when shifting images)
広角端状態 中間焦点距離状態 望遠端状態Wide-angle end state Intermediate focal length state Telephoto end state
f 28.800 100.001 287.999 f 28.800 100.001 287.999
シフトレンズ群の移動量 0.250 0.350 0.450 Movement amount of shift lens group 0.250 0.350 0.450
像の移動量 0.272 0.652 0.934 Image movement 0.272 0.652 0.934

(条件式対応値) (Conditional expression corresponding value)
(1) DT/fT = 0.216 (1) DT / fT = 0.216
(2) (1−βA)×βB =1.1(広角端状態)〜1.9(中間焦点距離状態)〜2.1(望遠端状態) (2) (1-βA) x βB = 1.1 (wide-angle end state) to 1.9 (intermediate focal length state) to 2.1 (telephoto end state)
(Table 6) (Table 6)
(Overall specifications) (Overall specifications)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 28.800 100.001 287.999 f 28.800 100.001 287.999
2ω 77.0 23.7 8.3 ° 2ω 77.0 23.7 8.3 °
FNO 3.6 5.5 5.8 FNO 3.6 5.5 5.8
(Lens data) (Lens data)
Surface number Curvature radius Surface spacing Abbe number Refractive index Surface number Curvature radius Surface spacing Abbe number Refractive index
1 115.6310 1.800 28.56 1.79504 1 115.6310 1.800 28.56 1.79504
2 71.8788 7.200 81.61 1.49700 2 71.8788 7.200 81.61 1.49700
3 -555.2835 0.100 3 -555.2835 0.100
4 65.0392 5.500 81.61 1.49700 4 65.0392 5.500 81.61 1.49700
5 232.0570 D1 5 232.0570 D1
6 512.2381 0.100 38.09 1.55389 6 512.2381 0.100 38.09 1.55389
7 180.0000 1.200 53.85 1.71300 7 180.0000 1.200 53.85 1.71300
8 18.5968 6.500 8 18.5968 6.500
9 -50.4004 1.000 42.72 1.83481 9 -50.4004 1.000 42.72 1.83481
10 63.9703 0.100 10 63.9703 0.100
11 39.9492 4.600 23.78 1.84666 11 39.9492 4.600 23.78 1.84666
12 -50.7514 1.500 12 -50.7514 1.500
13 -25.9825 0.900 49.61 1.77250 13 -25.9825 0.900 49.61 1.77250
14 -100.6446 D2 14 -100.6446 D2
15 0.0000 0.500 (Aperture stop S) 15 0.0000 0.500 (Aperture stop S)
16 22.7861 6.000 81.61 1.49700 16 22.7861 6.000 81.61 1.49700
17 -76.8308 0.100 17 -76.8308 0.100
18 27.0706 4.000 90.30 1.45600 18 27.0706 4.000 90.30 1.45600
19 304.3279 2.350 19 304.3279 2.350
20 -54.3445 0.800 40.77 1.88300 20 -54.3445 0.800 40.77 1.88300
21 95.0234 3.150 21 95.0234 3.150
22 33.1566 4.500 61.18 1.58913 22 33.1566 4.500 61.18 1.58913
23 -72.2937 0.800 23.78 1.84666 23 -72.2937 0.800 23.78 1.84666
24 -194.8570 6.700 24 -194.8570 6.700
25 -22.3588 0.800 37.17 1.83400 25 -22.3588 0.800 37.17 1.83400
26 -167.7429 D3 26 -167.7429 D3
27 730.6059 2.800 49.32 1.74320 27 730.6059 2.800 49.32 1.74320
28 -40.4002 0.100 28 -40.4002 0.100
29 -120.1675 7.400 36.26 1.62004 29 -120.1675 7.400 36.26 1.62004
30 -16.1891 1.000 46.63 1.81600 30 -16.1891 1.000 46.63 1.81600
31 -45.2280 BF 31 -45.2280 BF

(Aspheric coefficient) (Aspheric coefficient)
The sixth, twenty-second and twenty-eighth lens surfaces are aspherical surfaces, and the aspherical coefficients are shown in Fig. The sixth, twenty-second and twenty-eighth lens surfaces are aspherical surfaces, and the aspherical coefficients are shown in Fig.

Face κ C 4 C 6 C 8 C10 Face κ C 4 C 6 C 8 C 10
6 1.0000 5.6868E-06 6.5389E-09 -6.8904E-11 1.5909E-13 6 1.0000 5.6868E-06 6.5389E-09 -6.8904E-11 1.5909E-13
22 1.0000 -5.2152E-06 1.2238E-08 6.5604E-11 -4.4646E-13 22 1.0000 -5.2152E-06 1.2238E-08 6.5604E-11 -4.4646E-13
28 1.0000 1.4105E-05 3.3242E-08 -8.4679E-11 3.5821E-13 28 1.0000 1.4105E-05 3.3242E-08 -8.4679E-11 3.5821E-13

(Variable interval data) (Variable interval data)
The variable interval when changing the focal length is shown below. The variable interval when changing the focal length is shown below.

Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 28.800 100.001 287.999 f 28.800 100.001 287.999
D1 1.528 32.944 62.211 D1 1.528 32.944 62.211
D2 33.290 14.442 2.102 D2 33.290 14.442 2.102
D3 4.508 1.422 0.946 D3 4.508 1.422 0.946
BF 38.606 82.076 93.134 BF 38.606 82.076 93.134

(Various amounts during image shift) (Various amounts during image shift)
Wide-angle end state Intermediate focal length state Telephoto end state Wide-angle end state Intermediate focal length state Telephoto end state
f 28.800 100.001 287.999 f 28.800 100.001 287.999
Shift lens group travel 0.250 0.350 0.450 Shift lens group travel 0.250 0.350 0.450
Image travel 0.272 0.652 0.934 Image travel 0.272 0.652 0.934

(Values for conditional expressions) (Values ​​for conditional expressions)
(1) DT / fT = 0.216 (1) DT / fT = 0.216
(2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.9 (intermediate focal length state) to 2.1 (telephoto end state) (2) (1-βA) × βB = 1.1 (wide-angle end state) to 1.9 (intermediate focal length state) to 2.1 (telephoto end state)

図22より図24は、本発明の第6実施例にかかるズームレンズの無限遠合焦状態におけるd線での諸収差図をそれぞれ示す。図22(a)、(b)は広角端状態(f=28.8)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図23(a)、(b)は中間焦点距離状態(f=100.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。図24(a)、(b)は望遠端状態(f=288.0)の諸収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。   22 to 24 are graphs showing various aberrations at the d-line in the infinitely focused state of the zoom lens according to Example 6 of the present invention. FIGS. 22A and 22B are graphs showing various aberrations in the wide-angle end state (f = 28.8), FIG. 22A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown. FIGS. 23A and 23B are graphs showing various aberrations in the intermediate focal length state (f = 100.0), FIG. 23A is a diagram showing various aberrations during non-vibration stabilization, and FIG. 23B is a diagram showing lateral aberration during vibration isolation. Respectively. FIGS. 24A and 24B are graphs showing various aberrations in the telephoto end state (f = 288.0), FIG. 24A is a diagram showing various aberrations during non-vibration prevention, and FIG. Each is shown.

各収差図から、本第6実施例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は明らかである。 From the respective aberration diagrams, it is clear that the sixth embodiment has excellent imaging performance with various aberrations corrected well.

なお、上述の実施の形態は例に過ぎず、上述の構成や形状に限定されるものではなく、本発明の範囲内において適宜修正、変更が可能である。 The above-described embodiment is merely an example, and is not limited to the above-described configuration or shape, and can be appropriately modified and changed within the scope of the present invention.

本発明の第1実施例にかかるズームレンズの断面図。 1 is a cross-sectional view of a zoom lens according to a first example of the present invention. 第1実施例の広角端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 4A is an aberration diagram in the wide-angle end state according to Example 1; FIG. 5A is a diagram illustrating various aberrations during non-vibration stabilization, and FIG. 第1実施例の中間焦点距離状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the intermediate focal length state according to the first example. FIG. 5A illustrates various aberration diagrams when the image is not shaken, and FIG. 第1実施例の望遠端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 4A is an aberration diagram in the telephoto end state of the first example. FIG. 3A illustrates various aberration diagrams when the image is not shaken, and FIG. 本発明の第2実施例にかかるズームレンズの断面図。 Sectional drawing of the zoom lens concerning 2nd Example of this invention. 第2実施例の広角端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the wide-angle end state according to Example 2; FIG. 5A illustrates various aberration diagrams during non-vibration stabilization, and FIG. 9B illustrates a lateral aberration diagram during vibration isolation. 第2実施例の中間焦点距離状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 7A is an aberration diagram in the intermediate focal length state of the second example. FIG. 9A is a diagram illustrating various aberrations during non-vibration prevention, and FIG. 第2実施例の望遠端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the telephoto end state of the second example. FIG. 5A illustrates various aberration diagrams when the image stabilization is not performed, and FIG. 本発明の第3実施例にかかるズームレンズの断面図。 Sectional drawing of the zoom lens concerning 3rd Example of this invention. 第3実施例の広角端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 7A is an aberration diagram of the third example at the wide-angle end state, in which FIG. 9A illustrates various aberrations during non-vibration stabilization, and FIG. 9B illustrates a lateral aberration diagram during vibration isolation. 第3実施例の中間焦点距離状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 7A is an aberration diagram in the intermediate focal length state according to the third example. FIG. 9A is a diagram illustrating various aberrations during non-vibration prevention, and FIG. 第3実施例の望遠端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the telephoto end state of the third example. FIG. 5A illustrates various aberration diagrams when the image stabilization is not performed, and FIG. 本発明の第4実施例にかかるズームレンズの断面図。 Sectional drawing of the zoom lens concerning 4th Example of this invention. 第4実施例の広角端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the fourth embodiment at the wide-angle end state, in which FIG. 9A illustrates various aberrations during non-vibration stabilization and FIG. 10B illustrates a lateral aberration diagram during vibration isolation. 第4実施例の中間焦点距離状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。FIG. 10A is an aberration diagram in the intermediate focal length state according to the fourth example. FIG. 10A illustrates various aberrations when the image stabilization is not performed, and FIG. 9B illustrates a lateral aberration diagram when the image stabilization is performed. 第4実施例の望遠端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the telephoto end state of the fourth example. FIG. 5A illustrates various aberrations when the image stabilization is not performed, and FIG. 本発明の第5実施例にかかるズームレンズの断面図。 Sectional drawing of the zoom lens concerning 5th Example of this invention. 第5実施例の広角端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram of the fifth example at the wide-angle end state. FIG. 5A illustrates various aberrations when the image stabilization is not performed, and FIG. 第5実施例の中間焦点距離状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 9A is an aberration diagram in the intermediate focal length state according to the fifth example. FIG. 9A is a diagram illustrating various aberrations during non-vibration prevention, and FIG. 第5実施例の望遠端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the telephoto end state of the fifth example. FIG. 5A illustrates various aberrations when the image stabilization is not performed, and FIG. 本発明の第6実施例にかかるズームレンズの断面図。 Sectional drawing of the zoom lens concerning 6th Example of this invention. 第6実施例の広角端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。FIG. 6A is an aberration diagram in the sixth embodiment at a wide-angle end state, in which (a) illustrates various aberrations during non-vibration stabilization, and (b) illustrates a lateral aberration diagram during vibration isolation. 第6実施例の中間焦点距離状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。FIG. 10A is an aberration diagram in the intermediate focal length state according to the sixth example. FIG. 10A illustrates various aberration diagrams when the image stabilization is not performed, and FIG. 9B illustrates a lateral aberration diagram when the image stabilization is performed. 第6実施例の望遠端状態における収差図で、(a)は非防振時の諸収差図を、(b)は防振時の横収差図をそれぞれ示している。 FIG. 6A is an aberration diagram in the telephoto end state of the sixth example. FIG. 5A illustrates various aberration diagrams when the image stabilization is not performed, and FIG.

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G4:第4レンズ群S :開口絞りI :像面

G1: First lens group G2: Second lens group G3: Third lens group G4: Fourth lens group S: Aperture stop I: Image plane

Claims (8)

  1. 物体側より順に、正の屈折力を有する第1レンズ群と、負の屈折力を有する第2レンズ群と、正の屈折力を有する第3レンズ群と、正の屈折力を有する第4レンズ群とからなり
    広角端状態から望遠端状態までレンズ位置状態が変化する際に、前記第1レンズ群と前記第2レンズ群との間隔が増大し、前記第2レンズ群と前記第3レンズ群との間隔が減少し、前記第3レンズ群と前記第4レンズ群との間隔が減少するように、前記第1レンズ群乃至前記第4レンズ群が移動し、
    前記第2レンズ群は、少なくとも3枚の負レンズと1枚の正レンズとを有し、
    前記第3レンズ群は、物体側より順に、正の屈折力を有する第3A群と、正の屈折力を有する第3B群と、負の屈折力を有する第3C群とから成り、 The third lens group is composed of a third group A having a positive refractive power, a third group B having a positive refractive power, and a third group C having a negative refractive power in order from the object side.
    前記第3A群は、2枚の正レンズと1枚の負レンズとから成り、 The third group A is composed of two positive lenses and one negative lens.
    第3B群をシフトレンズ群として、光軸と垂直方向に移動させることによって像をシフトし、 The pre-Symbol the 3B group as a shift lens group, to shift the image by moving in a direction perpendicular to the optical axis,
    以下の条件式を満足することを特徴とする像シフト可能な高変倍光学系。 An image-shiftable high-magnification optical system characterized by satisfying the following conditional expression.
    0.120 < DT/fT < 0.245 0.120 <DT / fT <0.245
    但し、 However,
    DT:望遠端状態における、前記第1レンズ群の最も像側のレンズ面と前記第2レンズ群の最も物体側のレンズ面との空気間隔fT:望遠端状態の焦点距離In order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens having a positive refractive power It consists of a group, DT: Air distance between the most image-side lens surface of the first lens group and the most object-side lens surface of the second lens group in the telephoto end state fT: Focal length in the telephoto end state In order from the object side , a first lens group having a positive sintering power, a second lens group having a negative sintering power, a third lens group having a positive sintering power, and a fourth lens having a positive sintering power It consists of a group,
    When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group increases, and the distance between the second lens group and the third lens group increases. The first lens group to the fourth lens group move so that the distance between the third lens group and the fourth lens group decreases, When the lens position state changes from the wide-angle end state to the telephoto end state, the distance between the first lens group and the second lens group increases, and the distance between the second lens group and the third lens group increases. lens group to the fourth lens group move so that the distance between the third lens group and the fourth lens group decreases,
    The second lens group has at least three negative lenses and one positive lens, The second lens group has at least three negative lenses and one positive lens,
    The third lens group includes, in order from the object side, a third A group having a positive refractive power, a third B group having a positive refractive power, and a third C group having a negative refractive power, The third lens group includes, in order from the object side, a third A group having a positive refracting power, a third B group having a positive refracting power, and a third C group having a negative refracting power,
    The third group A consists of two positive lenses and one negative lens, The third group A consists of two positive lenses and one negative lens,
    The pre-Symbol the 3B group as a shift lens group, to shift the image by moving in a direction perpendicular to the optical axis, The pre-Symbol the 3B group as a shift lens group, to shift the image by moving in a direction perpendicular to the optical axis,
    An image-shiftable high-magnification optical system characterized by satisfying the following conditional expression: An image-shiftable high-magnification optical system characterized by satisfying the following conditional expression:
    0.120 <DT / fT <0.245 0.120 <DT / fT <0.245
    However, However,
    DT: air distance between the most image side lens surface of the first lens group and the most object side lens surface of the second lens group in the telephoto end state fT: focal length in the telephoto end state DT: air distance between the most image side lens surface of the first lens group and the most object side lens surface of the second lens group in the telephoto end state fT: focal length in the telephoto end state
  2. 以下の条件式を満足することを特徴とする請求項1に記載の像シフト可能な高変倍光学系。
    0.8 < (1−βA)×βB < 3.5
    但し、
    βA:前記シフトレンズ群の横倍率
    βB:前記シフトレンズ群と像面との間にある光学要素の横倍率
    2. The image-shiftable high variable magnification optical system according to claim 1, wherein the following conditional expression is satisfied.
    0.8 <(1-βA) × βB <3.5
    However,
    βA: lateral magnification of the shift lens group βB: lateral magnification of the optical element between the shift lens group and the image plane
  3. 前記シフトレンズ群に少なくとも1面以上の非球面を有することを特徴とする請求項1または2に記載の像シフト可能な高変倍光学系。 3. The image-shiftable high variable magnification optical system according to claim 1, wherein the shift lens group has at least one aspheric surface.
  4. 前記第3B群は、1枚の正レンズと1枚の負レンズとから成ることを特徴とする請求項1から3のいずれか1項に記載の像シフト可能な高変倍光学系。 Wherein the 3B group, one positive lens and the image shiftable high zoom optical system according to any one of claims 1 to 3, characterized in that it consists of one negative lens.
  5. 前記第4レンズ群は、レンズ中心からレンズ周辺に行くに従って正の屈折力が弱くなる形状の非球面を少なくとも1面有することを特徴とする請求項1からのいずれか1項に記載の像シフト可能な高変倍光学系。 The fourth lens group, an image according to any one of claims 1 4, characterized in that it has positive at least one aspherical surface shape refractive power becomes weaker toward the lens center to the periphery of the lens Shiftable high-magnification optical system.
  6. 前記第2レンズ群は、フォーカシングレンズ群であることを特徴とする請求項1からのいずれか1項に記載の像シフト可能な高変倍光学系。 The second lens group, high magnification optical system capable image shift according to claims 1 to any one of 5, which is a focusing lens unit.
  7. 前記第2レンズ群と前記第3レンズ群との間に、開口絞りが配置されていることを特徴とする請求項1からのいずれか1項に記載の像シフト可能な高変倍光学系。 Between the second lens group and the third lens group, high magnification optical system capable image shifting according to any one of claims 1, wherein the aperture stop is located 6 .
  8. 前記第1レンズ群から前記第4レンズ群の少なくとも一つのレンズ群は、回折光学素子を有することを特徴とする請求項1からのいずれか1項に記載の像シフト可能な高変倍光学系。 It said at least one lens group of the fourth lens group from the first lens group, the image shiftable high zoom optics according to any one of claims 1 7, characterized in that it comprises a diffractive optical element system.
JP2003341903A 2003-09-30 2003-09-30 Highly variable magnification optical system capable of image shift Active JP4479204B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003341903A JP4479204B2 (en) 2003-09-30 2003-09-30 Highly variable magnification optical system capable of image shift

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003341903A JP4479204B2 (en) 2003-09-30 2003-09-30 Highly variable magnification optical system capable of image shift
US10/785,096 US7136231B2 (en) 2003-02-27 2004-02-25 Zoom lens system

Publications (3)

Publication Number Publication Date
JP2005107280A5 JP2005107280A5 (en) 2005-04-21
JP2005107280A JP2005107280A (en) 2005-04-21
JP4479204B2 true JP4479204B2 (en) 2010-06-09

Family

ID=34536348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003341903A Active JP4479204B2 (en) 2003-09-30 2003-09-30 Highly variable magnification optical system capable of image shift

Country Status (1)

Country Link
JP (1) JP4479204B2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4959236B2 (en) * 2006-06-21 2012-06-20 株式会社タムロン High magnification zoom lens
JP4876755B2 (en) * 2006-07-27 2012-02-15 株式会社ニコン High magnification zoom lens and optical apparatus having the same
JP5042643B2 (en) * 2007-01-22 2012-10-03 パナソニック株式会社 Zoom lens system, imaging device and camera
JP5064837B2 (en) * 2007-03-01 2012-10-31 キヤノン株式会社 Zoom lens with anti-vibration function
JP4951370B2 (en) 2007-03-01 2012-06-13 株式会社タムロン Zoom lens with image stabilization by lens eccentricity
JP2009098458A (en) * 2007-10-17 2009-05-07 Olympus Imaging Corp Zoom lens and imaging apparatus having the same
JP5305686B2 (en) * 2008-02-20 2013-10-02 オリンパスイメージング株式会社 Zoom lens and imaging apparatus using the same
JP5201460B2 (en) * 2008-07-09 2013-06-05 株式会社ニコン Zoom lens, optical apparatus having the same, and zooming method
JP5201461B2 (en) * 2008-07-09 2013-06-05 株式会社ニコン Zoom lens, optical apparatus having the same, and zooming method
US8625203B2 (en) 2008-07-09 2014-01-07 Nikon Corporation Zoom lens, optical apparatus having same, and method of manufacturing zoom lens
JP5241377B2 (en) * 2008-08-19 2013-07-17 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP5224468B2 (en) * 2009-05-12 2013-07-03 富士フイルム株式会社 Zoom lens and imaging device
JP5628572B2 (en) * 2009-07-03 2014-11-19 パナソニック株式会社 Zoom lens system, imaging device and camera
JP5678424B2 (en) * 2009-11-26 2015-03-04 株式会社ニコン Variable magnification optical system, optical apparatus equipped with the variable magnification optical system, and method of manufacturing the variable magnification optical system
CN102193175B (en) 2010-03-08 2016-01-20 株式会社尼康 Zoom lens system and optical device
JP5724189B2 (en) * 2010-03-08 2015-05-27 株式会社ニコン Variable magnification optical system, optical device
JP5742100B2 (en) * 2010-03-08 2015-07-01 株式会社ニコン Variable-magnification optical system, optical device, and variable-magnification optical system manufacturing method
JP2011248220A (en) * 2010-05-28 2011-12-08 Tamron Co Ltd High variable power zoom lens
JP2011248219A (en) * 2010-05-28 2011-12-08 Tamron Co Ltd High variable power zoom lens
JP2012159746A (en) * 2011-02-01 2012-08-23 Nikon Corp Variable power optical system, optical apparatus, and method for manufacturing variable power optical system

Also Published As

Publication number Publication date
JP2005107280A (en) 2005-04-21

Similar Documents

Publication Publication Date Title
CN101334517B (en) Zoom lens system
EP2325688B1 (en) Zoom lens system with vibration reduction
CN101866045B (en) Zoom lens with vibration-proof function
JP3845331B2 (en) Endoscope objective optical system
JP4950630B2 (en) Zoom lens and imaging apparatus having the same
JP5544959B2 (en) Variable-magnification optical system, optical apparatus, and variable-magnification optical system manufacturing method
JP4834360B2 (en) Zoom lens and imaging apparatus having the same
JP4978119B2 (en) High zoom ratio zoom lens
JP5046740B2 (en) Zoom lens and imaging apparatus having the same
JP3081698B2 (en) 3-group zoom lens
JP4738823B2 (en) Zoom lens and imaging apparatus having the same
US6693750B2 (en) Zoom lens system
JP3371917B2 (en) Zoom lens with anti-vibration function
US7365913B2 (en) Zoom lens system and camera incorporating the same
JP4288408B2 (en) Zoom lens with image shift
US6215599B1 (en) Zoom lens optical system
JP5344549B2 (en) Zoom lens and imaging apparatus having the same
JP3800134B2 (en) Large aperture ratio internal focusing telephoto zoom lens
JP5006514B2 (en) Zoom lens and imaging apparatus having the same
JP4512359B2 (en) Camera with zoom lens
JP5056184B2 (en) Zoom lens, imaging device, zoom lens zooming method
JP4806915B2 (en) Zoom lens with anti-vibration function
JP5006634B2 (en) Zoom lens and imaging apparatus having the same
JP5168641B2 (en) Magnification optical system, optical apparatus having the same and magnifying method
US6498688B2 (en) Zoom lens system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060828

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080225

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091027

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091224

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100223

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100308

R150 Certificate of patent or registration of utility model

Ref document number: 4479204

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140326

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250