JP2016200772A5 - - Google Patents
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- JP2016200772A5 JP2016200772A5 JP2015082518A JP2015082518A JP2016200772A5 JP 2016200772 A5 JP2016200772 A5 JP 2016200772A5 JP 2015082518 A JP2015082518 A JP 2015082518A JP 2015082518 A JP2015082518 A JP 2015082518A JP 2016200772 A5 JP2016200772 A5 JP 2016200772A5
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- Prior art keywords
- lens group
- lens
- refractive power
- zoom
- positive refractive
- 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.)
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- 230000014509 gene expression Effects 0.000 claims 5
- 238000003384 imaging method Methods 0.000 claims 4
- 230000003287 optical effect Effects 0.000 claims 4
Claims (17)
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、
負の屈折力を有する第５レンズ群と、
正の屈折力を有する第６レンズ群とからなり、
ズーミング時に、前記第１レンズ群から像面までの距離が固定とされ、少なくとも、前記第２レンズ群、前記第３レンズ群、前記第４レンズ群、および前記第５レンズ群のそれぞれから像面までの距離が変化し、
かつ、以下の条件式を満足するズームレンズ。
０．１５＜Ｈ２／α＜０．５ ……（１）
１．０＜Ｍ２／Ｍ３＜８．０ ……（２）
ただし、
Ｈ２＝βＴ２／βＷ２
βＴ２：前記第２レンズ群の望遠端における横倍率
βＷ２：前記第２レンズ群の広角端における横倍率
α＝ｆｔ／ｆｗ
ｆｔ：望遠端におけるレンズ全系の焦点距離
ｆｗ：広角端におけるレンズ全系の焦点距離
Ｍ２：広角端から望遠端へとズーミングさせる際の前記第２レンズ群の移動量
Ｍ３：広角端から望遠端へとズーミングさせる際の前記第３レンズ群の移動量
とする。 From the object side,
A first lens group having a positive refractive power;
A second lens group having negative refractive power;
A third lens group having positive refractive power;
A fourth lens group having a positive refractive power;
A fifth lens group having negative refractive power;
A sixth lens group having positive refractive power,
During zooming, the distance from the first lens group to the image plane is fixed, and at least the image plane from each of the second lens group, the third lens group, the fourth lens group, and the fifth lens group. The distance to
A zoom lens that satisfies the following conditional expressions.
0.15 <H2 / α <0.5 (1)
1.0 <M2 / M3 <8.0 (2)
However,
H2 = βT2 / βW2
βT2: lateral magnification at the telephoto end of the second lens group βW2: lateral magnification at the wide-angle end of the second lens group α = ft / fw
ft: focal length of the entire lens system at the telephoto end fw: focal length of the entire lens system at the wide-angle end M2: amount of movement of the second lens group when zooming from the wide-angle end to the telephoto end M3: from the wide-angle end to the telephoto end The amount of movement of the third lens group when zooming is performed.
かつ、以下の条件式を満足する
請求項１に記載のズームレンズ。
ω＞３４ ……（３）
ただし、
ω：広角端における半画角
とする。 A concave lens having an aspheric surface on the most object side in the second lens group;
The zoom lens according to claim 1, wherein the following conditional expression is satisfied.
ω> 34 (3)
However,
ω: The half angle of view at the wide angle end.
請求項１または２に記載のズームレンズ。 The fourth lens group, said fifth lens group, and the sixth lens group, respectively, the zoom lens according to claim 1 or 2 consisting of a cemented lens or a single lens.
請求項１ないし３のいずれか１つに記載のズームレンズ。 The zoom lens according to claim 1, wherein the fifth lens group is a focus lens group.
請求項１ないし３のいずれか１つに記載のズームレンズ。 The zoom lens according to any one of claims 1 to 3, wherein the fourth lens group and the fifth lens group are a focus lens group.
請求項１ないし５のいずれか１つに記載のズームレンズ。 The zoom lens according to claim 1, wherein the fourth lens group is an anti-vibration lens group.
請求項１ないし６のいずれか１つに記載のズームレンズ。 The zoom lens according to any one of claims 1 to 6, wherein each of the fourth lens group, the fifth lens group, and the sixth lens group is a single lens having an aspherical surface.
請求項７に記載のズームレンズ。
ｖ４≧ｖ６ ……（４）
ｖ６＞ｖ５ ……（５）
０．８＜ｆ６／ｆ４＜１．２ ……（６）
ただし、
ｖ４：前記第４レンズ群のアッベ数
ｖ５：前記第５レンズ群のアッベ数
ｖ６：前記第６レンズ群のアッベ数
ｆ４：前記第４レンズ群の焦点距離
ｆ６：前記第６レンズ群の焦点距離
とする。 The zoom lens according to claim 7, further satisfying the following conditional expression.
v4 ≧ v6 (4)
v6> v5 (5)
0.8 <f6 / f4 <1.2 (6)
However,
v4: Abbe number of the fourth lens group v5: Abbe number of the fifth lens group v6: Abbe number of the sixth lens group f4: Focal length of the fourth lens group f6: Focal length of the sixth lens group And
請求項１ないし８のいずれか１つに記載のズームレンズ。
０．３＜ｐ３／ｐ４＜１．２ ……（７）
ただし、
ｐ３：前記第３レンズ群の屈折力
ｐ４：前記第４レンズ群の屈折力
とする。 The zoom lens according to any one of claims 1 to 8, further satisfying the following conditional expression.
0.3 <p3 / p4 <1.2 (7)
However,
p3: refractive power of the third lens group p4: refractive power of the fourth lens group.
請求項１ないし９のいずれか１つに記載のズームレンズ。 The zoom lens according to any one of claims 1 to 9 , wherein a distance from the sixth lens group to the image plane is fixed during zooming.
請求項１ないし１０のいずれか１つに記載のズームレンズ。 The zoom lens according to claim 1.
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、
負の屈折力を有する第５レンズ群と、
正の屈折力を有する第６レンズ群とからなり、
ズーミング時に、前記第１レンズ群から像面までの距離が固定とされ、前記第２レンズ群、前記第３レンズ群、前記第４レンズ群、および前記第５レンズ群のそれぞれから像面までの距離が変化し、
フォーカシングの際に、前記第４レンズ群と前記第５レンズ群とが光軸上を移動する
ズームレンズ。 From the object side,
A first lens group having a positive refractive power;
A second lens group having negative refractive power;
A third lens group having positive refractive power;
A fourth lens group having a positive refractive power;
A fifth lens group having negative refractive power;
A sixth lens group having positive refractive power,
During zooming, the distance from the first lens group to the image plane is fixed, and the distance from the second lens group, the third lens group, the fourth lens group, and the fifth lens group to the image plane is fixed. The distance changes,
A zoom lens in which the fourth lens group and the fifth lens group move on the optical axis during focusing.
請求項１２に記載のズームレンズ。 The zoom lens according to claim 12.
前記ズームレンズは、
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、
負の屈折力を有する第５レンズ群と、
正の屈折力を有する第６レンズ群とからなり、
ズーミング時に、前記第１レンズ群から像面までの距離が固定とされ、少なくとも、前記第２レンズ群、前記第３レンズ群、前記第４レンズ群、および前記第５レンズ群のそれぞれから像面までの距離が変化し、
かつ、以下の条件式を満足する撮像装置。
０．１５＜Ｈ２／α＜０．５ ……（１）
１．０＜Ｍ２／Ｍ３＜８．０ ……（２）
ただし、
Ｈ２＝βＴ２／βＷ２
βＴ２：前記第２レンズ群の望遠端における横倍率
βＷ２：前記第２レンズ群の広角端における横倍率
α＝ｆｔ／ｆｗ
ｆｔ：望遠端におけるレンズ全系の焦点距離
ｆｗ：広角端におけるレンズ全系の焦点距離
Ｍ２：広角端から望遠端へとズーミングさせる際の前記第２レンズ群の移動量
Ｍ３：広角端から望遠端へとズーミングさせる際の前記第３レンズ群の移動量
とする。 A zoom lens, and an image sensor that outputs an image signal corresponding to an optical image formed by the zoom lens,
The zoom lens is
From the object side,
A first lens group having a positive refractive power;
A second lens group having negative refractive power;
A third lens group having positive refractive power;
A fourth lens group having a positive refractive power;
A fifth lens group having negative refractive power;
A sixth lens group having positive refractive power,
During zooming, the distance from the first lens group to the image plane is fixed, and at least the image plane from each of the second lens group, the third lens group, the fourth lens group, and the fifth lens group. The distance to
An imaging apparatus that satisfies the following conditional expression.
0.15 <H2 / α <0.5 (1)
1.0 <M2 / M3 <8.0 (2)
However,
H2 = βT2 / βW2
βT2: lateral magnification at the telephoto end of the second lens group βW2: lateral magnification at the wide-angle end of the second lens group α = ft / fw
ft: focal length of the entire lens system at the telephoto end fw: focal length of the entire lens system at the wide-angle end M2: amount of movement of the second lens group when zooming from the wide-angle end to the telephoto end M3: from the wide-angle end to the telephoto end The amount of movement of the third lens group when zooming is performed.
請求項１４に記載の撮像装置。 The imaging device according to claim 14.
前記ズームレンズは、
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、
負の屈折力を有する第５レンズ群と、
正の屈折力を有する第６レンズ群とからなり、
ズーミング時に、前記第１レンズ群から像面までの距離が固定とされ、前記第２レンズ群、前記第３レンズ群、前記第４レンズ群、および前記第５レンズ群のそれぞれから像面までの距離が変化し、
フォーカシングの際に、前記第４レンズ群と前記第５レンズ群とが光軸上を移動する
撮像装置。 A zoom lens, and an image sensor that outputs an image signal corresponding to an optical image formed by the zoom lens,
The zoom lens is
From the object side,
A first lens group having a positive refractive power;
A second lens group having negative refractive power;
A third lens group having positive refractive power;
A fourth lens group having a positive refractive power;
A fifth lens group having negative refractive power;
A sixth lens group having positive refractive power,
During zooming, the distance from the first lens group to the image plane is fixed, and the distance from the second lens group, the third lens group, the fourth lens group, and the fifth lens group to the image plane is fixed. The distance changes,
An imaging apparatus in which the fourth lens group and the fifth lens group move on the optical axis during focusing.
請求項１６に記載の撮像装置。 The imaging device according to claim 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015082518A JP6641718B2 (en) | 2015-04-14 | 2015-04-14 | Zoom lens and imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015082518A JP6641718B2 (en) | 2015-04-14 | 2015-04-14 | Zoom lens and imaging device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2016200772A JP2016200772A (en) | 2016-12-01 |
| JP2016200772A5 true JP2016200772A5 (en) | 2018-05-24 |
| JP6641718B2 JP6641718B2 (en) | 2020-02-05 |
Family
ID=57422735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015082518A Active JP6641718B2 (en) | 2015-04-14 | 2015-04-14 | Zoom lens and imaging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6641718B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6732505B2 (en) * | 2016-04-11 | 2020-07-29 | キヤノン株式会社 | Zoom lens and image pickup apparatus using the same |
| WO2019097716A1 (en) | 2017-11-20 | 2019-05-23 | 株式会社ニコン | Variable magnification optical system, optical device, and manufacturing method of variable magnification optical system |
| JP6742977B2 (en) * | 2017-12-21 | 2020-08-19 | キヤノン株式会社 | Zoom lens and imaging device having the same |
| JPWO2020174866A1 (en) * | 2019-02-27 | 2021-12-23 | ソニーグループ株式会社 | Variable focal length lens system and image pickup device |
| JP7188276B2 (en) * | 2019-05-23 | 2022-12-13 | コニカミノルタ株式会社 | Zoom lenses, imaging optical devices and digital devices |
| JPWO2024070667A1 (en) * | 2022-09-27 | 2024-04-04 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58186715A (en) * | 1982-04-24 | 1983-10-31 | Canon Inc | Focusing method of zoom lens |
| JP2006209100A (en) * | 2004-12-28 | 2006-08-10 | Konica Minolta Opto Inc | Zoom lens and imaging apparatus |
| JP2007233163A (en) * | 2006-03-02 | 2007-09-13 | Konica Minolta Opto Inc | Zoom lens and imaging apparatus |
| JP5040408B2 (en) * | 2007-04-11 | 2012-10-03 | ソニー株式会社 | Zoom lens and imaging device |
| JP5050264B2 (en) * | 2007-09-14 | 2012-10-17 | 株式会社リコー | Zoom lens and imaging device |
| JP2009192771A (en) * | 2008-02-14 | 2009-08-27 | Sony Corp | Zoom lens, image pickup apparatus, and control method for zoom lens |
| TWI457633B (en) * | 2011-04-22 | 2014-10-21 | Ability Entpr Co Ltd | Zoom lens |
| CN102759792A (en) * | 2011-04-26 | 2012-10-31 | 佳能企业股份有限公司 | zoom lens |
| JP2013057738A (en) * | 2011-09-07 | 2013-03-28 | Olympus Corp | Imaging apparatus |
| JP6207266B2 (en) * | 2013-07-04 | 2017-10-04 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
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