JP4146134B2 - Zoom lens - Google Patents

Zoom lens Download PDF

Info

Publication number
JP4146134B2
JP4146134B2 JP2002039425A JP2002039425A JP4146134B2 JP 4146134 B2 JP4146134 B2 JP 4146134B2 JP 2002039425 A JP2002039425 A JP 2002039425A JP 2002039425 A JP2002039425 A JP 2002039425A JP 4146134 B2 JP4146134 B2 JP 4146134B2
Authority
JP
Japan
Prior art keywords
lens
refractive power
positive refractive
distance
zoom
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
JP2002039425A
Other languages
Japanese (ja)
Other versions
JP2003241096A (en
Inventor
豊 上村
武久 小山
朋来 幸野
Original Assignee
株式会社シグマ
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 株式会社シグマ filed Critical 株式会社シグマ
Priority to JP2002039425A priority Critical patent/JP4146134B2/en
Publication of JP2003241096A publication Critical patent/JP2003241096A/en
Application granted granted Critical
Publication of JP4146134B2 publication Critical patent/JP4146134B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G02B15/17Optical 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 +--

Description

【0001】
【発明の属する技術分野】
本発明は防振機能を備えたズームレンズに関し、特にフイルム写真用カメラ、デジタルカメラや、ビデオカメラなどに使用されるズームレンズの防振機能に関するものである。
【0002】
【従来の技術】
従来より、防振機能を備えたズームレンズにおいては、たとえば特開平11−316342号公報に開示されるように、変倍の際には、変倍に用いるレンズ群を多群で構成してレンズ全長を移動させ、手振れなどに起因する像位置の変動を補正する際には、一部のレンズ群を光軸と直行方向に移動させて補正していた。
【0003】
【発明が解決しようとする課題】
しかしながら、上述のような防振機能を備えたズームレンズでは、ズームレンズ群が多群で構成されるために機構が複雑になる問題点があった。つまり、防振機能のための手振れ検出機構や防振機構などの構成部品の配置に制限を課せなければならなかった。
【0004】
本発明は、前述の課題に鑑みてなされたものであり、簡易な防振機構を備えたズームレンズを提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明は、前述の課題を解決するために、物体側から順に、正の屈折力を有する第1レンズ群G1と、負の屈折力を有する第2レンズ群G2と、負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、正の屈折力を有する第5レンズ群G5とを備え、広角端から望遠端への変倍時には、該第1レンズ群G1と該第5レンズ群G5は像面に対し固定であり、該第1レンズ群G1と該第2レンズ群G2との間隔は変化し、該第2レンズ群G2と該第3レンズ群G3の間隔は変化し、該第3レンズ群G3と該第4レンズ群G4の間隔は減少し、該第4レンズ群G4と該第5レンズ群G5の間隔は変化する構成とした。
【0006】
また、防振をするための変位手段として、前記第4レンズ群G4を光軸とほぼ直交する方向に移動さる構成とし、前記第1レンズ群G1は、物体側から順に、正の屈折力を有する第1レンズ群前部GL1と、正の屈折力を有する第1レンズ群後部GL2を有し、該第1レンズ群後部GL2でフォーカスをする構成とした。
【0007】
さらに、本発明の好ましい態様によれば、前記第2レンズ群G2の焦点距離をf2、前記第3レンズ群G3の焦点距離をf3としたとき、f2<f3の条件を満足する。
【0008】
【発明の実施の形態】
本発明では、フイルム写真用カメラ、デジタルカメラやビデオカメラ用のズームレンズに適するように、物体側から順に、正の屈折力を有する第1レンズ群G1と、負の屈折力を有する第2レンズ群G2と、負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、正の屈折力を有する第5レンズ群G5とを備え、広角端から望遠端への変倍時には、該第1レンズ群G1と該第5レンズ群G5は像面に対し固定であり、該第1レンズ群G1と該第2レンズ群G2との間隔は変化し、該第2レンズ群G2と該第3レンズ群G3の間隔は変化し、該第3レンズ群G3と該第4レンズ群G4の間隔は減少し、該第4レンズ群G4と該第5レンズ群G5の間隔は変化するという基本構成を採用している。
【0009】
まず、上述の基本構成を有するズームレンズの特徴および利点について説明をする。
【0010】
ズームレンズ群を多群で構成し、変倍の際にレンズ全長を移動させる光学系は、短焦点側でレンズ全長を、大幅に短くできる利点を有しているが、古典的4群ズームのような全長固定型ズームレンズと比べ、機構的に複雑になるなどの欠点を有する。さらに本願発明のように、手振れなどに起因する像位置の変動を補正する光学系を内蔵させる場合、補正光学系を駆動する機構、手振れ検出機構などの付加要素があるためさらに機構的レイアウトの制限が必要となる。コストダウンや信頼性を確保するにはズーム光学系はシンプルであることが望ましい。本発明は、第1レンズ群G1と最終レンズ群が、ズームによらず像面に対して固定の構成を採用することにより、機構的に簡素化を行った。また、絞りが固定群である第5レンズ群G5内に位置するため、絞り駆動も容易になる。さらに、前述の第1レンズ群G1内の正の屈折力を有する第1レンズ群後部GL2でフォーカスすることにより、複雑なカムを用いることなくインナーフォーカスが可能となり、さらにフォーカス群の重量軽減をはかることができる。
【0011】
以下、本発明の条件式について詳述する。一般的に、防振補正光学系は、小型軽量であることが望ましく、全ズーム域で防振時の光学性能の低下を極力押さえなければならなく、特に軸外光線は光軸近傍を通過することが望ましい。従って、絞り近傍の光学系を防振補正光学系にすれば良いのである。本発明では、絞り近傍の第4レンズ群G4を防振レンズ群とするため上述した条件を満足できる。
【0012】
条件式(1)は、前記第2レンズ群G2の焦点距離をf2、前記第3レンズ群G3の焦点距離をf3としたときの焦点距離の比を規定するための条件である。条件式(1)の下限を超え、該第2レンズ群G2のパワーが相対的に強くなると球面収差、非点収差がズーム全域で補正不足になり好ましくない。また、条件式(1)の上限を超え、該第2レンズ群G2のパワーが相対的に弱くなると、該第2レンズ群G2の有効径大きくなり光学系が大型化するので好ましくなく、球面収差、非点収差がズーム全域で補正過剰になる。
【0013】
【実施例】
以下、本発明の各実施例を図面を用いて説明をする。本発明のズームレンズは、物体側から順に、正の屈折力を有する第1レンズ群G1と、負の屈折力を有する第2レンズ群G2と、負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、正の屈折力を有する第5レンズ群G5とを備え、広角端から望遠端への変倍時には、該第1レンズ群G1と該第5レンズ群G5は像面に対し固定であり、該第1レンズ群G1と該第2レンズ群G2との間隔は変化し、該第2レンズ群G2と該第3レンズ群G3の間隔は変化し、該第3レンズ群G3と該第4レンズ群G4の間隔は減少し、該第4レンズ群G4と該第5レンズ群G5の間隔は変化する。
【0014】
また、前記第1レンズ群G1は、物体側から順に、正の屈折力を有する第1レンズ群前部GL1と、正の屈折力を有する第1レンズ群後部GL2を有し、該第1レンズ群後部GL2でフォーカスをする。前記第4レンズ群G4は、光軸とほぼ直交する方向に移動さることで、像位置の変動を補正する変位手段である。なお、前記第5レンズ群G5内に絞りを配置する。
【0015】
本発明の各実施例の諸元値は、以下の通りである。fは焦点距離、FNOはFナンバー、2ωは画角、番号は面番号で物体側からのレンズ面の順番、R(I)はレンズ面の曲率半径、D(I)はレンズ面の間隔、NDはd線の屈折率、Vdはアッベ数を表している。
【0016】
実施例1
【0017】
実施例2
【0018】
【発明の効果】
以上のように本発明によれば、簡易なレンズ構成で、防振機構や手振れ検出機構などの部品配置にゆとりのある防振機構を有したズームレンズを実現することができる。
【図面の簡単な説明】
【図1】本発明の実施例1のレンズ構成図
【図2】本発明の実施例1の非防振時における広角端の収差図
【図3】本発明の実施例1の非防振時における中間焦点距離の収差図
【図4】本発明の実施例1の非防振時における望遠端の収差図
【図5】本発明の実施例1の防振時における広角端のコマ収差図
【図6】本発明の実施例1の防振時における中間焦点距離のコマ収差図
【図7】本発明の実施例1の防振時における望遠端のコマ収差図
【図8】本発明の実施例2のレンズ構成図
【図9】本発明の実施例2の非防振時における広角端の収差図
【図10】本発明の実施例2の非防振時における中間焦点距離の収差図
【図11】本発明の実施例2の非防振時における望遠端の収差図
【図12】本発明の実施例2の防振時における広角端のコマ収差図
【図13】本発明の実施例2の防振時における中間焦点距離のコマ収差図
【図14】本発明の実施例2の防振時における望遠端のコマ収差図
【符号の説明】
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
G5 第5レンズ群
GL1 第1レンズ群前部
GL2 第1レンズ群後部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a zoom lens having an anti-vibration function, and more particularly to an anti-vibration function of a zoom lens used in a film photographic camera, a digital camera, a video camera, and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a zoom lens having an image stabilization function, as disclosed in, for example, Japanese Patent Application Laid-Open No. 11-316342, when zooming, a lens group used for zooming is configured in multiple groups. When correcting the fluctuation of the image position caused by camera shake or the like by moving the entire length, correction is performed by moving a part of the lens unit in a direction perpendicular to the optical axis.
[0003]
[Problems to be solved by the invention]
However, the zoom lens having the above-described image stabilization function has a problem that the mechanism is complicated because the zoom lens group is composed of multiple groups. In other words, it has been necessary to place restrictions on the arrangement of components such as a camera shake detection mechanism and a vibration isolation mechanism for the vibration isolation function.
[0004]
The present invention has been made in view of the above-described problems, and an object thereof is to provide a zoom lens having a simple vibration-proof mechanism.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the present invention has a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a negative refractive power in order from the object side. The first lens group includes a third lens group G3, a fourth lens group G4 having a positive refractive power, and a fifth lens group G5 having a positive refractive power, and at the time of zooming from the wide angle end to the telephoto end. G1 and the fifth lens group G5 are fixed with respect to the image plane, the distance between the first lens group G1 and the second lens group G2 changes, and the second lens group G2 and the third lens group G3. The distance between the third lens group G3 and the fourth lens group G4 decreases, and the distance between the fourth lens group G4 and the fifth lens group G5 changes.
[0006]
Further, as a displacement means for anti-vibration, the fourth lens group G4 is moved in a direction substantially orthogonal to the optical axis, and the first lens group G1 has a positive refractive power in order from the object side. The first lens group front portion GL1 and the first lens group rear portion GL2 having a positive refractive power, and the first lens group rear portion GL2 is focused.
[0007]
Further, according to a preferred aspect of the present invention, when the focal length of the second lens group G2 is f2, and the focal length of the third lens group G3 is f3, the condition of f2 <f3 is satisfied.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, a first lens group G1 having a positive refractive power and a second lens having a negative refractive power in order from the object side so as to be suitable for a zoom lens for a film photographic camera, a digital camera or a video camera. A group G2, a third lens group G3 having a negative refractive power, a fourth lens group G4 having a positive refractive power, and a fifth lens group G5 having a positive refractive power, from the wide-angle end to the telephoto end At the time of zooming, the first lens group G1 and the fifth lens group G5 are fixed with respect to the image plane, the distance between the first lens group G1 and the second lens group G2 changes, and the first lens group G1 changes. The distance between the second lens group G2 and the third lens group G3 changes, the distance between the third lens group G3 and the fourth lens group G4 decreases, and the distance between the fourth lens group G4 and the fifth lens group G5 decreases. A basic configuration is adopted in which the interval changes.
[0009]
First, features and advantages of the zoom lens having the above basic configuration will be described.
[0010]
An optical system in which the zoom lens group is composed of multiple groups and moves the entire lens length at the time of zooming has the advantage that the entire lens length can be greatly shortened on the short focus side. Compared with such a full length fixed zoom lens, it has a drawback that it is mechanically complicated. Further, when an optical system for correcting fluctuations in image position caused by camera shake or the like is incorporated as in the present invention, there are additional elements such as a mechanism for driving the correction optical system and a camera shake detection mechanism, which further limit the mechanical layout. Is required. In order to ensure cost reduction and reliability, it is desirable that the zoom optical system is simple. In the present invention, the first lens group G1 and the final lens group are mechanically simplified by adopting a configuration in which the first lens group G1 and the final lens group are fixed with respect to the image plane regardless of the zoom. Further, since the aperture is located in the fifth lens group G5, which is a fixed group, the aperture driving is also facilitated. Furthermore, by focusing with the first lens group rear portion GL2 having positive refractive power in the first lens group G1, the inner focus can be achieved without using a complicated cam, and the weight of the focus group is further reduced. be able to.
[0011]
Hereinafter, the conditional expressions of the present invention will be described in detail. In general, it is desirable that the image stabilization optical system is small and light, and it is necessary to suppress a decrease in optical performance during image stabilization as much as possible in the entire zoom range. In particular, off-axis rays pass near the optical axis. It is desirable. Accordingly, the optical system in the vicinity of the stop may be replaced with an image stabilization optical system. In the present invention, since the fourth lens group G4 in the vicinity of the stop is set as an anti-vibration lens group, the above-described conditions can be satisfied.
[0012]
Conditional expression (1) is a condition for defining the ratio of the focal lengths when the focal length of the second lens group G2 is f2 and the focal length of the third lens group G3 is f3. If the lower limit of conditional expression (1) is exceeded and the power of the second lens group G2 becomes relatively strong, spherical aberration and astigmatism will be insufficiently corrected over the entire zoom range, which is not preferable. If the upper limit of conditional expression (1) is exceeded and the power of the second lens group G2 becomes relatively weak, the effective diameter of the second lens group G2 becomes large and the optical system becomes large, which is not preferable. Astigmatism is overcorrected over the entire zoom range.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. The zoom lens of the present invention includes, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a third lens group G3 having a negative refractive power. A fourth lens group G4 having a positive refractive power and a fifth lens group G5 having a positive refractive power, and at the time of zooming from the wide angle end to the telephoto end, the first lens group G1 and the fifth lens group G5. The lens group G5 is fixed with respect to the image plane, the distance between the first lens group G1 and the second lens group G2 changes, and the distance between the second lens group G2 and the third lens group G3 changes. The distance between the third lens group G3 and the fourth lens group G4 decreases, and the distance between the fourth lens group G4 and the fifth lens group G5 changes.
[0014]
The first lens group G1 includes, in order from the object side, a first lens group front part GL1 having a positive refractive power and a first lens group rear part GL2 having a positive refractive power. Focus on the rear group GL2. The fourth lens group G4 is a displacing unit that corrects fluctuations in the image position by moving in a direction substantially orthogonal to the optical axis. A diaphragm is disposed in the fifth lens group G5.
[0015]
The specification value of each Example of this invention is as follows. f is the focal length, FNO is the F number, 2ω is the angle of view, the number is the surface number, the order of the lens surface from the object side, R (I) is the radius of curvature of the lens surface, D (I) is the distance between the lens surfaces, ND represents the refractive index of the d line, and Vd represents the Abbe number.
[0016]
Example 1
[0017]
Example 2
[0018]
【The invention's effect】
As described above, according to the present invention, it is possible to realize a zoom lens having an anti-vibration mechanism with a sufficient arrangement of components such as an anti-vibration mechanism and a camera shake detection mechanism with a simple lens configuration.
[Brief description of the drawings]
FIG. 1 is a lens configuration diagram of Example 1 of the present invention. FIG. 2 is an aberration diagram at a wide angle end during non-vibration prevention according to Example 1 of the present invention. FIG. 4 is a diagram showing aberrations at the telephoto end during non-vibration prevention according to Example 1 of the present invention. FIG. 5 is a diagram showing coma aberration at the wide-angle end during image stabilization according to Example 1 of the present invention. FIG. 6 is a coma aberration diagram at the intermediate focal length during image stabilization of Example 1 of the present invention. FIG. 7 is a diagram of coma aberration at the telephoto end during image stabilization of Example 1 of the present invention. FIG. 9 is a diagram of the lens configuration of Example 2. FIG. 10 is an aberration diagram at the wide-angle end during non-vibration prevention according to Example 2 of the present invention. 11 is an aberration diagram at the telephoto end during non-vibration prevention according to Example 2 of the present invention. FIG. 12 is a coma aberration at the wide-angle end during vibration isolation according to Example 2 of the present invention. [13] coma aberration diagram at the telephoto end when the image stabilization according to a second embodiment of the intermediate focal length coma diagram Figure 14 the invention when the image stabilization according to a second embodiment of the present invention Description of Reference Numerals]
G1 1st lens group G2 2nd lens group G3 3rd lens group G4 4th lens group G5 5th lens group GL1 1st lens group front part GL2 1st lens group rear part

Claims (1)

  1. 防振機能を備えたズームレンズにおいて、物体側から順に、正の屈折力を有する第1レンズ群G1と、負の屈折力を有する第2レンズ群G2と、負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、正の屈折力を有する第5レンズ群G5とからなり、広角端から望遠端への変倍時には、該第1レンズ群G1と該第5レンズ群G5は像面に対し固定であり、該第1レンズ群G1と該第2レンズ群G2との間隔は変化し、該第2レンズ群G2と該第3レンズ群G3の間隔は変化し、該第3レンズ群G3と該第4レンズ群G4の間隔は減少し、該第4レンズ群G4と該第5レンズ群G5の間隔は変化し、該第1レンズ群G1は、物体側から順に、正の屈折力を有する第1レンズ群前部GL1と、正の屈折力を有する第1レンズ群後部GL2を有し、該第1レンズ群後部GL2でフォーカスし、前記第4レンズ群G4を光軸とほぼ直交する方向に移動させて防振するための変位手段を備え、前記第2レンズ群G2の焦点距離をf2、前記第3レンズ群G3の焦点距離をf3としたとき、
    . 8<f2/f3<2 . 7 ・・・・・ (1)
    の条件を満足するズームレンズ。
    In a zoom lens having an image stabilization function, in order from the object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, and a third lens having a negative refractive power a group G3, the fourth lens group G4 having positive refractive power, and a fifth lens group G5 having positive refractive power, upon zooming from the wide-angle end to the telephoto end, the first lens group G1 The fifth lens group G5 is fixed with respect to the image plane, the distance between the first lens group G1 and the second lens group G2 changes, and the distance between the second lens group G2 and the third lens group G3. Changes, the distance between the third lens group G3 and the fourth lens group G4 decreases, the distance between the fourth lens group G4 and the fifth lens group G5 changes, and the first lens group G1 In order from the object side, the first lens group front portion GL1 having a positive refractive power and the first lens group having a positive refractive power. Has a lens group rear GL2, focused by the first lens group rear GL2, wherein the fourth lens group G4 is moved in a direction substantially perpendicular to the optical axis comprises a displacement means for vibration isolation, the second When the focal length of the lens group G2 is f2, and the focal length of the third lens group G3 is f3,
    1. 8 <f2 / f3 < 2. 7 ····· (1)
    Zoom lens that satisfies the above conditions.
JP2002039425A 2002-02-18 2002-02-18 Zoom lens Active JP4146134B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002039425A JP4146134B2 (en) 2002-02-18 2002-02-18 Zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002039425A JP4146134B2 (en) 2002-02-18 2002-02-18 Zoom lens

Publications (2)

Publication Number Publication Date
JP2003241096A JP2003241096A (en) 2003-08-27
JP4146134B2 true JP4146134B2 (en) 2008-09-03

Family

ID=27780445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002039425A Active JP4146134B2 (en) 2002-02-18 2002-02-18 Zoom lens

Country Status (1)

Country Link
JP (1) JP4146134B2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5608987B2 (en) * 2009-02-26 2014-10-22 株式会社ニコン Variable magnification optical system, optical equipment
JP5617172B2 (en) * 2009-02-26 2014-11-05 株式会社ニコン Variable magnification optical system, optical equipment
JP5608986B2 (en) * 2009-02-26 2014-10-22 株式会社ニコン Variable magnification optical system, optical equipment
JP5605675B2 (en) * 2009-02-26 2014-10-15 株式会社ニコン Variable magnification optical system, optical equipment
JP5369898B2 (en) * 2009-05-27 2013-12-18 株式会社ニコン Zoom lens, optical equipment
US8503097B2 (en) 2009-05-27 2013-08-06 Nikon Corporation Lens system, optical apparatus and manufacturing method
JP5541567B2 (en) * 2009-11-26 2014-07-09 株式会社ニコン Variable magnification optical system, optical apparatus, and variable magnification optical system manufacturing method
JP5545142B2 (en) * 2010-09-10 2014-07-09 コニカミノルタ株式会社 Projection lens having a zoom function
JP2013019986A (en) * 2011-07-08 2013-01-31 Fujifilm Corp Variable power optical system for projection and projection type display device
JP6016544B2 (en) 2012-09-14 2016-10-26 キヤノン株式会社 Zoom lens and projector using the same
CN204903852U (en) * 2012-11-19 2015-12-23 富士胶片株式会社 Zoom lens and projection type display device for projection
JP6646244B2 (en) * 2015-03-18 2020-02-14 キヤノン株式会社 Zoom lens and imaging device
JP6545113B2 (en) 2016-03-07 2019-07-17 キヤノン株式会社 Zoom lens and imaging device having the same

Also Published As

Publication number Publication date
JP2003241096A (en) 2003-08-27

Similar Documents

Publication Publication Date Title
US7532412B2 (en) Zoom lens having image stabilizing function
US6124984A (en) Variable magnification optical zoom lens system
JP4806915B2 (en) Zoom lens with anti-vibration function
EP2045637B1 (en) Zoom lens system
EP2325688B1 (en) Zoom lens system with vibration reduction
JP5178322B2 (en) Zoom lens and imaging apparatus having the same
JP4143933B2 (en) Zoom lens and imaging device
JP5498259B2 (en) High magnification zoom lens
JP4666977B2 (en) Zoom lens and imaging apparatus having the same
JP3506691B2 (en) High magnification zoom lens
JP4217990B2 (en) Zoom lens and imaging device
JP4834360B2 (en) Zoom lens and imaging apparatus having the same
JP4532916B2 (en) Zoom lens and imaging apparatus having the same
US20130120854A1 (en) Zoom Lens System, Optical Device with the Zoom Lens System, and Method of Manufacturing the Zoom Lens System
JP3564061B2 (en) Zoom lens and optical device using the same
JP4604303B2 (en) Variable focal length lens system and imaging apparatus including the lens system
JP5152490B2 (en) Magnification optical system having anti-vibration function, optical apparatus equipped with this magnifying optical system, and magnifying method of magnifying optical system
JP4593971B2 (en) Zoom lens and imaging apparatus having the same
JP3919580B2 (en) Zoom lens and optical apparatus having the same
JP4289958B2 (en) Zoom lens and imaging apparatus having the same
JP5634220B2 (en) Zoom lens and imaging apparatus having the same
JP5582913B2 (en) Single focus lens with anti-vibration function
JP5458477B2 (en) Variable magnification optical system, optical apparatus, and variable magnification optical system magnification method
JP5207761B2 (en) Optical system and optical apparatus having the same
JP2004198529A (en) Zoom lens and optical equipment having the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050208

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080117

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080311

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080428

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: 20080617

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: 20080619

R150 Certificate of patent or registration of utility model

Ref document number: 4146134

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: 20110627

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20110627

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

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

Free format text: PAYMENT UNTIL: 20120627

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20120627

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20130627

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

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

Free format text: PAYMENT UNTIL: 20130627

Year of fee payment: 5

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

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250