JP2014153400A5 - - Google Patents
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- JP2014153400A5 JP2014153400A5 JP2013020376A JP2013020376A JP2014153400A5 JP 2014153400 A5 JP2014153400 A5 JP 2014153400A5 JP 2013020376 A JP2013020376 A JP 2013020376A JP 2013020376 A JP2013020376 A JP 2013020376A JP 2014153400 A5 JP2014153400 A5 JP 2014153400A5
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Description
上述の課題を解決するための第１の側面における本発明のズームレンズは、物体側から像側に順に、実質的に、正屈折力の第１レンズ群、負屈折力の第２レンズ群、正屈折力の第３レンズ群、負屈折力の第４レンズ群、レンズを含む第５レンズ群、正屈折力の第６レンズ群、からなり、第１レンズ群と第２レンズ群との間の距離は、広角端よりも望遠端にて広がり、第２レンズ群と第３レンズ群との間の距離は広角端よりも望遠端にて狭まり、第３レンズ群と第４レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、第４レンズ群と第５レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、第５レンズ群と第６レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、第１レンズ群と第３レンズ群との距離は、広角端よりも望遠端にて狭まることを特徴としている。 The zoom lens according to the first aspect of the present invention for solving the above-mentioned problem is, in order from the object side to the image side, in order, substantially a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having positive refractive power, a fourth lens unit having a negative refractive power, a fifth lens group including a lens, a sixth lens group having positive refractive power and a, between the first lens group and the second lens group Is wider at the telephoto end than at the wide-angle end, the distance between the second lens group and the third lens group is narrower at the telephoto end than at the wide-angle end, and the third lens group and the fourth lens group The distance between the fourth lens group and the fifth lens group changes during zooming from the wide-angle end to the telephoto end, and the distance between the fourth lens group and the fifth lens group changes during zooming from the wide-angle end to the telephoto end. The distance between the fifth lens group and the sixth lens group changes during zooming from the wide-angle end to the telephoto end, and the distance between the first lens group and the third lens group. It is characterized in that smaller at the telephoto end than at the wide angle end.
上述の課題を解決するための第２の側面における本発明のズームレンズは、物体側から像側に順に、実質的に、正屈折力の第１レンズ群、負屈折力の第２レンズ群、正屈折力の第３レンズ群、負屈折力の第４レンズ群、レンズを含む第５レンズ群、正屈折力の第６レンズ群、からなり、第１レンズ群は、広角端から望遠端への変倍時に位置が静止し、第２レンズ群、第３レンズ群、第４レンズ群、第５レンズ群は広角端から望遠端への変倍に際して移動し、第１レンズ群と第２レンズ群との間の距離は、広角端よりも望遠端にて広がり、第２レンズ群と第３レンズ群との間の距離は広角端よりも望遠端にて狭まり、第３レンズ群と第４レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、第４レンズ群と第５レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、第５レンズ群と第６レンズ群との間の距離は広角端から望遠端への変倍の際に変化することを特徴としている。 The zoom lens according to the second aspect of the present invention for solving the above-described problem is, in order from the object side to the image side, substantially, a first lens group having a positive refractive power, a second lens group having a negative refractive power, The first lens group includes a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, a fifth lens group including a lens, and a sixth lens group having a positive refractive power . The first lens group extends from the wide-angle end to the telephoto end. The position of the second lens group, the third lens group, the fourth lens group, and the fifth lens group move during zooming from the wide-angle end to the telephoto end, and the first lens group and the second lens group move. The distance between the second lens group and the third lens group is wider at the telephoto end than at the wide-angle end, and the distance between the second lens group and the third lens group is narrower at the telephoto end than at the wide-angle end. The distance to the lens group changes during zooming from the wide-angle end to the telephoto end, and the distance between the fourth lens group and the fifth lens group. Is changed when zooming from the wide-angle end to the telephoto end, and the distance between the fifth lens group and the sixth lens group changes when zooming from the wide-angle end to the telephoto end. .
条件式（２）について
下限値を２、さらには２．５とすることがより好ましい。
上限値を４．５、さらには４とすることがより好ましい。
For conditional expression (2), it is more preferable to set the lower limit value to 2, further 2.5.
Set the upper limit to 4 . More preferably, it is set to 5.
Claims (23)
正屈折力の第１レンズ群、
負屈折力の第２レンズ群、
正屈折力の第３レンズ群、
負屈折力の第４レンズ群、
レンズを含む第５レンズ群、
正屈折力の第６レンズ群、からなり、
前記第１レンズ群と前記第２レンズ群との間の距離は、広角端よりも望遠端にて広がり、
前記第２レンズ群と前記第３レンズ群との間の距離は、広角端よりも望遠端にて狭まり、
前記第３レンズ群と前記第４レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、
前記第４レンズ群と前記第５レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、
前記第５レンズ群と前記第６レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、
前記第１レンズ群と前記第３レンズ群との距離は、広角端よりも望遠端にて狭まる
ことを特徴とするズームレンズ。 In order from the object side to the image side ,
A first lens unit having positive refractive power,
A second lens unit having negative refractive power,
A third lens unit having positive refractive power,
A fourth lens unit having a negative refractive power,
A fifth lens group including a lens;
A sixth lens group having positive refractive power ,
The distance between the first lens group and the second lens group is wider at the telephoto end than at the wide angle end,
The distance between the second lens group and the third lens group is narrower at the telephoto end than at the wide-angle end,
The distance between the third lens group and the fourth lens group changes during zooming from the wide-angle end to the telephoto end,
The distance between the fourth lens group and the fifth lens group changes during zooming from the wide-angle end to the telephoto end,
The distance between the fifth lens group and the sixth lens group changes during zooming from the wide-angle end to the telephoto end,
A zoom lens, wherein a distance between the first lens group and the third lens group is narrower at a telephoto end than at a wide angle end.
正屈折力の第１レンズ群、
負屈折力の第２レンズ群、
正屈折力の第３レンズ群、
負屈折力の第４レンズ群、
レンズを含む第５レンズ群、
正屈折力の第６レンズ群、からなり、
前記第１レンズ群は、広角端から望遠端への変倍時に位置が静止し、
前記第２レンズ群、前記第３レンズ群、前記第４レンズ群、前記第５レンズ群は広角端から望遠端への変倍に際して移動し、
前記第１レンズ群と前記第２レンズ群との間の距離は、広角端よりも望遠端にて広がり、
前記第２レンズ群と前記第３レンズ群との間の距離は、広角端よりも望遠端にて狭まり、
前記第３レンズ群と前記第４レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、
前記第４レンズ群と前記第５レンズ群との間の距離は広角端から望遠端への変倍の際に変化し、
前記第５レンズ群と前記第６レンズ群との間の距離は広角端から望遠端への変倍の際に変化する
ことを特徴とするズームレンズ。 In order from the object side to the image side ,
A first lens unit having positive refractive power,
A second lens unit having negative refractive power,
A third lens unit having positive refractive power,
A fourth lens unit having a negative refractive power,
A fifth lens group including a lens;
A sixth lens group having positive refractive power ,
The first lens group is stationary at the time of zooming from the wide-angle end to the telephoto end,
The second lens group, the third lens group, the fourth lens group, and the fifth lens group move during zooming from the wide-angle end to the telephoto end,
The distance between the first lens group and the second lens group is wider at the telephoto end than at the wide angle end,
The distance between the second lens group and the third lens group is narrower at the telephoto end than at the wide-angle end,
The distance between the third lens group and the fourth lens group changes during zooming from the wide-angle end to the telephoto end,
The distance between the fourth lens group and the fifth lens group changes during zooming from the wide-angle end to the telephoto end,
A zoom lens characterized in that the distance between the fifth lens group and the sixth lens group changes upon zooming from the wide-angle end to the telephoto end.
ことを特徴とする請求項１に記載のズームレンズ。 2. The zoom lens according to claim 1 , wherein the first lens group is stationary at the time of zooming from the wide-angle end to the telephoto end.
ことを特徴とする請求項１から３の何れかに記載のズームレンズ。 4. The zoom lens according to claim 1, wherein the third lens group is positioned on the object side at a telephoto end with respect to a wide angle end. 5.
ことを特徴とする請求項４に記載のズームレンズ。
０．２＜ΔＧ３／ｆ３＜１ （１）
ただし、
ΔＧ３は、前記第３レンズ群の広角端に対する望遠端での位置の変位量であり、物体側への変位を正とし、
ｆ３は、前記第３レンズ群の焦点距離、
である。 The zoom lens according to claim 4, wherein the third lens group satisfies the following conditional expression (1).
0.2 <ΔG3 / f3 <1 (1)
However,
ΔG3 is a displacement amount of the position of the third lens group at the telephoto end with respect to the wide angle end, and the displacement toward the object side is positive,
f3 is a focal length of the third lens group,
It is.
ことを特徴とする請求項４または５の何れかに記載のズームレンズ。 6. An aperture stop disposed between the second lens group and the fourth lens group and moving toward the object side at the telephoto end with respect to the wide-angle end. The described zoom lens.
ことを特徴とする請求項６に記載のズームレンズ。 The zoom lens according to claim 6, wherein the aperture stop is disposed between the second lens group and the third lens group.
ことを特徴とする請求項６または７に記載のズームレンズ。 The aperture stop, the zoom lens according to claim 6 or 7, wherein the aperture size at the time of minimum F-number at the telephoto end than at the wide angle end is large.
ことを特徴とする請求項１に記載のズームレンズ。 2. The zoom lens according to claim 1, wherein the fourth lens group and the fifth lens group move during zooming from the wide-angle end to the telephoto end.
ことを特徴とする請求項１から９の何れかに記載のズームレンズ。 The zoom lens according to any one of claims 1 to 9, wherein the fourth lens group and the fifth lens group move during a focusing operation.
ことを特徴とする請求項１０に記載のズームレンズ。 The fifth lens group has a negative refractive power, and the moving direction during focusing to a short distance at the wide-angle end and the moving direction during focusing to a short distance at the telephoto end are the same as those of the fourth lens group and the fourth lens group. The zoom lens according to claim 10, wherein the zoom lens is different in five lens groups.
ことを特徴とする請求項１から１１の何れかに記載のズームレンズ。 The zoom lens according to claim 1, wherein the fifth lens group has a negative refractive power.
ことを特徴とする請求項１から１０の何れかに記載のズームレンズ。 The zoom lens according to claim 1, wherein the fifth lens group has a positive refractive power.
ことを特徴とする請求項１から１３の何れかに記載のズームレンズ。 The zoom lens according to any one of claims 1 to 13, wherein the sixth lens group is stationary at the time of zooming from the wide-angle end to the telephoto end.
ことを特徴とする請求項１から１４の何れかに記載のズームレンズ。
ここで、レンズ成分とは、光路中にて空気と接する屈折面が物体側面と像側面の２つのみとなるレンズプロックである。 15. The zoom lens according to claim 1, wherein the second lens group includes a three-piece cemented lens component of a positive lens, a negative lens, and a positive lens in order from the object side to the image side.
Here, the lens component is a lens block in which there are only two refracting surfaces in contact with air in the optical path, the object side surface and the image side surface.
ことを特徴とする請求項１から１５の何れかに記載のズームレンズ。
１＜（ｒ２１−ｒ２２）／（ｒ２１＋ｒ２２）＜５ （２）
ただし、
ｒ２１は、前記３枚接合レンズ成分中の前記負レンズの物体側面の近軸曲率半径、
ｒ２２は、前記３枚接合レンズ成分中の前記負レンズの像側面の近軸曲率半径、
である。 The zoom lens according to claim 1, wherein the three-piece cemented lens component satisfies the following conditional expression (2).
1 <(r21−r22) / (r21 + r22) <5 (2)
However,
r21 is a paraxial radius of curvature of the object side surface of the negative lens in the three-piece cemented lens component;
r22 is a paraxial radius of curvature of the image side surface of the negative lens in the three-piece cemented lens component;
It is.
満足する
ことを特徴とする請求項１から１６の何れかに記載のズームレンズ。
７５＜νｄ３ｐ＜１００ （３）
１．４＜ｆ３１ｐ／ｆ３＜３．７ （４）
ただし、
νｄ３ｐは、前記第３レンズ群中の全ての正レンズのｄ線基準のアッベ数のうちの最大値、
ｆ３１ｐは、前記第３レンズ群中で最も物体側の正レンズの焦点距離、
ｆ３は、前記第３レンズ群の焦点距離、
である。 The zoom lens according to any one of claims 1 to 16, wherein the third lens group includes a negative lens and a plurality of positive lenses, and satisfies the following conditional expressions (3) and (4). .
75 <νd3p <100 (3)
1.4 <f31p / f3 <3.7 (4)
However,
νd3p is the maximum value among the Abbe numbers on the d-line basis of all the positive lenses in the third lens group,
f31p is a focal length of a positive lens closest to the object side in the third lens group,
f3 is a focal length of the third lens group,
It is.
以下の条件式（５）を満足する
ことを特徴とする請求項１から１７の何れかに記載のズームレンズ。
０．６＜（ｒ４１−ｒ４２）／（ｒ４１＋ｒ４２）＜２ （５）
ただし、
ｒ４１は、前記第４レンズ群中の前記負レンズの物体側面の近軸曲率半径、
ｒ４２は、前記第４レンズ群中の前記負レンズの像側面の近軸曲率半径、
である。 The fourth lens group consists of one negative lens,
The zoom lens according to claim 1, wherein the following conditional expression (5) is satisfied.
0.6 <(r41−r42) / (r41 + r42) <2 (5)
However,
r41 is a paraxial radius of curvature of the object side surface of the negative lens in the fourth lens group;
r42 is a paraxial radius of curvature of the image side surface of the negative lens in the fourth lens group;
It is.
以下の条件式（６）を満足する
ことを特徴とする請求項１から１７の何れかに記載のズームレンズ。
−１＜（ｒ５１−ｒ５２）／（ｒ５１＋ｒ５２）＜４ （６）
ただし、
ｒ５１は、前記第５レンズ群中の前記レンズの物体側面の近軸曲率半径、
ｒ５２は、前記第５レンズ群中の前記レンズの像側面の近軸曲率半径、
である。 The zoom lens according to claim 1, wherein the fifth lens group includes one lens and satisfies the following conditional expression (6).
-1 <(r51-r52) / (r51 + r52) <4 (6)
However,
r51 is a paraxial radius of curvature of the object side surface of the lens in the fifth lens group;
r52 is a paraxial radius of curvature of the image side surface of the lens in the fifth lens group;
It is.
以下の条件式（６−１）を満足する
ことを特徴とする請求項１２に記載のズームレンズ。
０＜（ｒ５１−ｒ５２）／（ｒ５１＋ｒ５２）＜４ （６−１）
ただし、
ｒ５１は、前記第５レンズ群中の前記レンズの物体側面の近軸曲率半径、
ｒ５２は、前記第５レンズ群中の前記レンズの像側面の近軸曲率半径、
である。 The zoom lens according to claim 12, wherein the fifth lens group includes one negative lens and satisfies the following conditional expression (6-1).
0 <(r51−r52) / (r51 + r52) <4 (6-1)
However,
r51 is a paraxial radius of curvature of the object side surface of the lens in the fifth lens group;
r52 is a paraxial radius of curvature of the image side surface of the lens in the fifth lens group;
It is.
以下の条件式（６−２）を満足する
ことを特徴とする請求項１３に記載のズームレンズ。
−１＜（ｒ５１−ｒ５２）／（ｒ５１＋ｒ５２）＜０ （６−２）
ただし、
ｒ５１は、前記第５レンズ群中の前記レンズの物体側面の近軸曲率半径、
ｒ５２は、前記第５レンズ群中の前記レンズの像側面の近軸曲率半径、
である。 The zoom lens according to claim 13, wherein the fifth lens group includes one positive lens and satisfies the following conditional expression (6-2).
-1 <(r51-r52) / (r51 + r52) <0 (6-2)
However,
r51 is a paraxial radius of curvature of the object side surface of the lens in the fifth lens group;
r52 is a paraxial radius of curvature of the image side surface of the lens in the fifth lens group;
It is.
ことを特徴とする請求項１から２１の何れかに記載のズームレンズ。
０．２＜｜ΔＧ５（Ｔ）／ΔＧ４（Ｔ）｜＜２ （７）
ただし、
ΔＧ４（Ｔ）は、望遠端における前記第４レンズ群の無限遠合焦状態から至近合焦状態へのフォーカシングの際の移動量、
ΔＧ５（Ｔ）は、望遠端における前記第５レンズ群の無限遠合焦状態から至近合焦状態へのフォーカシングの際の移動量、
である。 At the telephoto end, the fourth lens group and the fifth lens group move while satisfying the following conditional expression (7) at the time of focusing from the infinite focus state to the closest focus state. The zoom lens according to any one of claims 1 to 21.
0.2 <| ΔG5 (T) / ΔG4 (T) | <2 (7)
However,
ΔG4 (T) is the amount of movement of the fourth lens group at the telephoto end during focusing from the infinitely focused state to the closest focused state,
ΔG5 (T) is the amount of movement of the fifth lens group at the telephoto end during focusing from the infinitely focused state to the closest focused state,
It is.
ことを特徴とする請求項１から２２の何れかに記載のズームレンズ。
３．２＜ｆｔ／ｆｗ＜６ （８）
１．４＜ＦＮＯ（Ｔ）＜３．２ （９）
ただし、
ｆｔは、前記ズームレンズの望遠端での焦点距離、
ｆｗは、前記ズームレンズの広角端での焦点距離、
ＦＮＯ（Ｔ）は、前記ズームレンズの望遠端でのＦナンバー
である。 The zoom lens according to claim 1, wherein the following conditional expressions (8) and (9) are satisfied.
3.2 <ft / fw <6 (8)
1.4 <FNO (T) <3.2 (9)
However,
ft is the focal length at the telephoto end of the zoom lens,
fw is the focal length at the wide-angle end of the zoom lens,
FNO (T) is an F number at the telephoto end of the zoom lens.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013020376A JP6212264B2 (en) | 2013-02-05 | 2013-02-05 | Zoom lens |
| US14/172,325 US9261682B2 (en) | 2013-02-05 | 2014-02-04 | Zoom lens |
| US14/990,686 US9507133B2 (en) | 2013-02-05 | 2016-01-07 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013020376A JP6212264B2 (en) | 2013-02-05 | 2013-02-05 | Zoom lens |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014153400A JP2014153400A (en) | 2014-08-25 |
| JP2014153400A5 true JP2014153400A5 (en) | 2016-03-10 |
| JP6212264B2 JP6212264B2 (en) | 2017-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013020376A Active JP6212264B2 (en) | 2013-02-05 | 2013-02-05 | Zoom lens |
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| Country | Link |
|---|---|
| JP (1) | JP6212264B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6808441B2 (en) * | 2016-10-24 | 2021-01-06 | キヤノン株式会社 | Zoom lens and imaging device with it |
| JP6949533B2 (en) * | 2017-04-11 | 2021-10-13 | キヤノン株式会社 | Zoom lens and imaging device with it |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6483648B1 (en) * | 1999-09-10 | 2002-11-19 | Olympus Optical Co., Ltd. | Zoom lens |
| JP3835789B2 (en) * | 1999-09-21 | 2006-10-18 | オリンパス株式会社 | Zoom lens and camera equipped with the zoom lens |
| JP5202022B2 (en) * | 2008-02-19 | 2013-06-05 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP4560745B2 (en) * | 2008-08-06 | 2010-10-13 | ソニー株式会社 | Variable focal length lens system |
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