JP2013182246A5 - - Google Patents
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- JP2013182246A5 JP2013182246A5 JP2012047847A JP2012047847A JP2013182246A5 JP 2013182246 A5 JP2013182246 A5 JP 2013182246A5 JP 2012047847 A JP2012047847 A JP 2012047847A JP 2012047847 A JP2012047847 A JP 2012047847A JP 2013182246 A5 JP2013182246 A5 JP 2013182246A5
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- 230000014509 gene expression Effects 0.000 claims description 11
- 230000003287 optical Effects 0.000 claims description 11
- 238000003384 imaging method Methods 0.000 claims description 7
- 230000003247 decreasing Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Description
本発明のズームレンズは、物体側から像側へ順に、正の屈折力の第１レンズ群と、負の屈折力の第２レンズ群と、正の屈折力の第３レンズ群と、負の屈折力の第４レンズ群と、正の屈折力の第５レンズ群から成り、ズーミングに際して隣り合うレンズ群の間隔が変化するズームレンズにおいて、
前記第４レンズ群は、光軸と垂直方向の成分を持つ方向に移動することによって結像位置を光軸に対して垂直方向に移動させる負の屈折力の部分群を有し、前記第１レンズ群の焦点距離をｆ１、前記第３レンズ群の焦点距離をｆ３とするとき
４．３＜ｆ１／ｆ３＜６．０
なる条件式を満足することを特徴としている。
The zoom lens according to the present invention includes, in order from the object side to the image 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, a fourth lens group having a refractive power, and a fifth lens unit having positive refractive power, the zoom lens spacing of the lens units vary adjacent zooming,
The fourth lens group has a negative refractive power subgroup that moves the imaging position in a direction perpendicular to the optical axis by moving in a direction having a component perpendicular to the optical axis. When the focal length of the lens unit is f1, and the focal length of the third lens unit is f3, 4.3 <f1 / f3 <6.0
It satisfies the following conditional expression.
以下、本発明のズームレンズ及びそれを有する撮像装置の実施例について説明する。本発明のズームレンズは、物体側から像側へ順に、正の屈折力の第１レンズ群と、負の屈折力の第２レンズ群と、正の屈折力の第３レンズ群と、負の屈折力の第４レンズ群と、正の屈折力の第５レンズ群からなっている。そしてズーミングに際して隣り合うレンズ群の間隔が変化する。第４レンズ群は、光軸と垂直方向の成分を持つ方向に移動することによって結像位置を光軸に対して垂直方向に移動させる負の屈折力の部分群を有している。 Embodiments of the zoom lens of the present invention and an image pickup apparatus having the same will be described below. The zoom lens according to the present invention includes, in order from the object side to the image 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, a fourth lens group having a refractive power, which is a fifth lens unit having positive refractive power. The distance between adjacent lens units changes during zooming. The fourth lens group has a negative refractive power subgroup that moves the imaging position in a direction perpendicular to the optical axis by moving in a direction having a component perpendicular to the optical axis.
レンズ断面図において、左方が物体側（前方）で、右方が像側（後方）である。レンズ断面図において、ｉは物体側からレンズ群の順番を示し、Ｌｉは第ｉレンズ群である。図１、図４、図７のレンズ断面図においてＬ１は正の屈折力の第１レンズ群、Ｌ２は負の屈折力の第２レンズ群、Ｌ３は正の屈折力の第３レンズ群、Ｌ４は負の屈折力の第４レンズ群、Ｌ５は正の屈折力の第５レンズ群である。ここで、第４レンズ群Ｌ４は、光軸と垂直方向の成分を持つように移動して結像位置を移動させる負の屈折力の防振用の部分群（防振レンズ群）ＩＳを有している。 In the lens cross-sectional view, the left side is the object side (front), and the right side is the image side (rear). In the lens cross-sectional view, i indicates the order of the lens groups from the object side, and Li is the i-th lens group. In FIGS. 1, 4, and 7, L1 is a first lens group having a positive refractive power, L2 is a second lens group having a negative refractive power, L3 is a third lens group having a positive refractive power, and L4. Is a fourth lens group having a negative refractive power, and L5 is a fifth lens group having a positive refractive power. Here, the fourth lens unit L4 has an anti-vibration subgroup (anti-vibration lens unit) IS having a negative refractive power that moves so as to have a component perpendicular to the optical axis and moves the imaging position. doing.
フォーカスは第２レンズ群Ｌ２を光軸方向に移動させて行っている。尚、フォーカスはズームレンズ全体又は任意の１つのレンズ群を移動させて行っても良い。各実施例において第４レンズ群Ｌ４の全部又は一部のレンズ群より防振用の部分群ＩＳを構成している。そして部分群ＩＳは、光軸と垂直方向の成分を持つように移動して、光軸と垂直方向に像を変移させてズームレンズ全体が振動したときの像ぶれを補正している。即ち防振を行っている。 Focusing is performed by moving the second lens unit L2 in the optical axis direction. Focusing may be performed by moving the entire zoom lens or any one lens group. In each embodiment, the vibration-proof subgroup IS is composed of all or a part of the fourth lens group L4. The subgroup IS moves so as to have a component in a direction perpendicular to the optical axis, shifts the image in a direction perpendicular to the optical axis, and corrects image blur when the entire zoom lens vibrates. That is, vibration isolation is performed.
実施例１、３において第４レンズ群Ｌ４は防振用の部分群ＩＳより構成している。実施例２において第４レンズ群Ｌ４は防振用の部分群ＩＳと負の屈折力のレンズより構成している。部分群ＩＳは正レンズと負レンズを接合した接合レンズよりなっている。尚、各実施例において第１レンズ群Ｌ１の物体側や最も像側のレンズ群の像側に屈折力の小さなレンズ群を付加しても良い。またテレコンバーターレンズやワイドコンバーターレンズ等を物体側や像側に配置しても良い。 In the first and third embodiments, the fourth lens unit L4 includes a vibration-proof subgroup IS. In the second embodiment, the fourth lens unit L4 includes an anti-vibration subgroup IS and a lens having a negative refractive power. The subgroup IS is composed of a cemented lens in which a positive lens and a negative lens are cemented. In each embodiment, a lens unit having a small refractive power may be added to the object side of the first lens unit L1 or the image side of the most image side lens unit. A teleconverter lens, a wide converter lens, or the like may be disposed on the object side or the image side.
又、各実施例のズームレンズにおいては、ズーミングに際して、広角端に比べ望遠端での第３レンズ群と第４レンズ群との間隔が大きくなるように第３レンズ群と第４レンズ群を移動させている。これにより軸上光束径が増大する望遠端において、第３レンズ群Ｌ３から射出した軸上光束が収斂する距離を確保しやすくして、防振用の部分群ＩＳの小型化を容易にしている。また、各実施例のズームレンズでは、第１レンズ群Ｌ１の焦点距離をｆ１、第３レンズ群の焦点距離をｆ３とするとき、
４．３＜ｆ１／ｆ３＜６．０・・・（１）
なる条件式を満足している。
In the zoom lens of each embodiment, the third lens group and the fourth lens group are moved during zooming so that the distance between the third lens group and the fourth lens group at the telephoto end is larger than that at the wide angle end. I am letting. As a result, at the telephoto end where the axial light beam diameter increases, it is easy to secure the distance that the axial light beam emitted from the third lens unit L3 converges, and the vibration isolation subgroup IS can be easily downsized. . In the zoom lens of each embodiment, when the focal length of the first lens unit L1 is f1, and the focal length of the third lens unit is f3,
4.3 <f1 / f3 <6.0 (1)
The following conditional expression is satisfied.
条件式（１）は第１レンズ群Ｌ１と第３レンズ群Ｌ３の焦点距離の比を適切に設定するものである。条件式（１）の下限値を超えて第１レンズ群Ｌ１の焦点距離が短くなると、望遠端において球面収差が増大し、その補正が困難となる。又、第３レンズ群Ｌ３の正の屈折力が弱くなり第３レンズ群Ｌ３による軸上光束の収斂作用が小さくなり過ぎるために防振用の部分群ＩＳの小型化が困難になってくる。又上限値を超えて第３レンズ群Ｌ３の正の屈折力が強くなるとズーミングに伴う球面収差の変動を小さくするのが困難となる。 Conditional expression (1) appropriately sets the ratio of the focal lengths of the first lens unit L1 and the third lens unit L3. If the lower limit of conditional expression (1) is exceeded and the focal length of the first lens unit L1 is shortened, spherical aberration increases at the telephoto end, making correction difficult. Further, since the positive refractive power of the third lens unit L3 is weakened and the converging action of the axial light beam by the third lens unit L3 becomes too small, it is difficult to reduce the size of the vibration-proof subgroup IS. If the positive refractive power of the third lens unit L3 is increased beyond the upper limit, it becomes difficult to reduce the variation of spherical aberration due to zooming.
４．４＜ｆ１／ｆ３＜５．０・・・（１ａ）
各実施例の光学系において、好ましくは次の条件式のうち１以上を満足するのが良い。それによれば各条件式に対応した効果が得られる。部分群ＩＳの焦点距離をｆＩＳ、望遠端における全系の焦点距離をｆｔとする。第２レンズ群Ｌ２の焦点距離をｆ２とする。
4.4 <f1 / f3 <5.0 (1a)
In the optical system of each embodiment, it is preferable to satisfy one or more of the following conditional expressions. According to this, an effect corresponding to each conditional expression can be obtained. The focal length of the subgroup IS is fIS, and the focal length of the entire system at the telephoto end is ft. The focal length of the second lens unit L2 is f2.
条件式（２）は、防振用の負の屈折力の部分群ＩＳの焦点距離を適切に設定するものである。条件式（２）の上限値を越えて、部分群ＩＳの負の屈折力が弱くなると、望遠端における防振敏感度を大きくするのが困難となる。又、下限値を越えて部分群ＩＳの負の屈折力が強くなりすぎると防振敏感度が大きくなりすぎて防振を精度良く行うのが困難となるので良くない。 Conditional expression (2) appropriately sets the focal length of the negative refractive power subgroup IS for image stabilization. If the upper limit of conditional expression (2) is exceeded and the negative refractive power of the subgroup IS becomes weak, it becomes difficult to increase the image stabilization sensitivity at the telephoto end. On the other hand, if the negative refractive power of the subgroup IS becomes too strong beyond the lower limit value, the sensitivity of vibration isolation becomes too high, making it difficult to perform vibration isolation with high accuracy.
[数値実施例１]
単位 mm
面データ
面番号 r d nd νd
1 256.516 2.00 1.84666 23.9
2 80.205 8.58 1.77250 49.6
3 770.556 0.15
4 51.899 5.86 1.80400 46.6
5 88.386 (可変)
6* 96.827 0.05 1.52421 51.4
7 61.208 1.50 1.88300 40.8
8 16.132 8.17
9 -44.889 1.20 1.75500 52.3
10 18.254 6.26 1.83400 37.2
11 137.231 0.15
12 75.532 3.50 1.80518 25.4
13 -125.489 3.69
14 -23.650 1.20 1.60300 65.4
15 -49.394 (可変)
16(絞り) ∞ 0.34
17 29.857 5.16 1.49700 81.5
18 240.448 0.15
19 33.821 1.60 1.83400 37.2
20 18.930 11.32 1.49700 81.5
21 -223.501 0.15
22* 73.830 8.32 1.77250 49.6
23 -23.883 1.50 1.83400 37.2
24 -60.570 (可変)
25 -74.277 4.16 1.80809 22.8
26 -21.944 1.20 1.81600 46.6
27* 45.883 (可変)
28 35.978 7.44 1.59240 68.3
29 -55.746 0.15
30 148.721 4.39 1.49700 81.5
31 -54.487 1.50 1.84666 23.9
32 51.278 1.62
33* 80.176 4.48 1.85006 40.2
34 -227.700 (可変)
像面 ∞
非球面データ
第6面
K = 0.00000e+000 A 4= 1.39226e-005 A 6=-1.09653e-008 A 8=-4.33385e-012 A10= 5.30223e-014
第22面
K = 0.00000e+000 A 4=-9.43667e-006 A 6=-1.73083e-009 A 8= 7.90583e-012 A10=-1.65238e-014
第27面
K = 0.00000e+000 A 4=-4.95882e-006 A 6=-4.53732e-009 A 8= 3.85212e-011 A10=-1.07546e-013
第33面
K = 0.00000e+000 A 4=-7.62804e-006 A 6=-7.21323e-009 A 8=-2.06486e-012 A10=-4.24052e-014
各種データ
ズーム比 2.75
広角 中間 望遠
焦点距離 24.70 36.42 67.88
Fナンバー 2.91 2.91 2.91
半画角（度） 41.22 30.71 17.68
像高 21.64 21.64 21.64
レンズ全長 164.87 172.85 196.79
BF 39.07 44.44 54.56
d 5 2.76 12.54 32.92
d15 14.94 7.78 1.22
d24 0.96 5.23 10.39
d27 11.37 7.10 1.94
d34 39.07 44.44 54.56
ズームレンズ群データ
群 始面 焦点距離
1 1 122.23
2 6 -15.38
3 16 26.71
4 25 -33.77
5 28 45.84
[Numerical Example 1]
Unit mm
Surface data surface number rd nd νd
1 256.516 2.00 1.84666 23.9
2 80.205 8.58 1.77250 49.6
3 770.556 0.15
4 51.899 5.86 1.80 400 46.6
5 88.386 (variable)
6 * 96.827 0.05 1.52421 51.4
7 61.208 1.50 1.88300 40.8
8 16.132 8.17
9 -44.889 1.20 1.75 500 52.3
10 18.254 6.26 1.83400 37.2
11 137.231 0.15
12 75.532 3.50 1.80518 25.4
13 -125.489 3.69
14 -23.650 1.20 1.60 300 65.4
15 -49.394 (variable)
16 (Aperture) ∞ 0.34
17 29.857 5.16 1.49700 81.5
18 240.448 0.15
19 33.821 1.60 1.83400 37.2
20 18.930 11.32 1.49700 81.5
21 -223.501 0.15
22 * 73.830 8.32 1.77250 49.6
23 -23.883 1.50 1.83400 37.2
24 -60.570 (variable)
25 -74.277 4.16 1.80809 22.8
26 -21.944 1.20 1.81600 46.6
27 * 45.883 (variable)
28 35.978 7.44 1.59240 68.3
29 -55.746 0.15
30 148.721 4.39 1.49700 81.5
31 -54.487 1.50 1.84666 23.9
32 51.278 1.62
33 * 80.176 4.48 1.85006 40.2
34 -227.700 (variable)
Image plane ∞
Aspheric data 6th surface
K = 0.00000e + 000 A 4 = 1.39226e-005 A 6 = -1.09653e-008 A 8 = -4.33385e-012 A10 = 5.30223e-014
22nd page
K = 0.00000e + 000 A 4 = -9.43667e-006 A 6 = -1.73083e-009 A 8 = 7.90583e-012 A10 = -1.65238e-014
27th page
K = 0.00000e + 000 A 4 = -4.95882e-006 A 6 = -4.53732e-009 A 8 = 3.85212e-011 A10 = -1.07546e-013
Side 33
K = 0.00000e + 000 A 4 = -7.62804e-006 A 6 = -7.21323e-009 A 8 = -2.06486e-012 A10 = -4.24052e-014
Various data Zoom ratio 2.75
Wide angle Medium Telephoto focal length 24.70 36.42 67.88
F number 2.91 2.91 2.91
Half angle of view (degrees) 41.22 30.71 17.68
Image height 21.64 21.64 21.64
Total lens length 164.87 172.85 196.79
BF 39.07 44.44 54.56
d 5 2.76 12.54 32.92
d15 14.94 7.78 1.22
d24 0.96 5.23 10.39
d27 11.37 7.10 1.94
d34 39.07 44.44 54.56
Zoom lens group data group Start surface Focal length
1 1 122.23
2 6 -15.38
3 16 26.71
4 25 -33.77
5 28 45.84
[数値実施例２]
単位 mm
面データ
面番号 r d nd νd
1 1018.919 1.80 1.84666 23.9
2 84.890 8.21 1.83481 42.7
3 3143.890 0.15
4 59.262 5.79 1.83481 42.7
5 117.304 (可変)
6* 98.182 0.05 1.52421 51.4
7 53.766 1.20 1.83481 42.7
8 16.625 7.87
9 -43.505 1.00 1.77250 49.6
10 17.574 4.72 1.83400 37.2
11 63.101 0.15
12 53.147 4.51 1.80518 25.4
13 -72.090 3.72
14 -20.873 1.20 1.77250 49.6
15 -33.228 (可変)
16(絞り) ∞ 0.49
17 31.905 4.45 1.49700 81.5
18 105.601 0.15
19 37.826 1.60 1.84666 23.9
20 23.210 10.83 1.49700 81.5
21 -68.228 0.15
22* 71.333 4.07 1.69680 55.5
23 -148.072 (可変)
24 -269.960 5.65 1.84666 23.9
25 -19.352 1.20 1.83400 37.2
26 97.049 3.33
27 -92.477 1.30 1.83400 37.2
28 242.849 (可変)
29 115.000 6.08 1.49700 81.5
30 -44.176 0.15
31 90.778 6.19 1.49700 81.5
32 -55.146 0.00
33 -55.146 2.00 1.84666 23.9
34* 169.829 0.96
35 329.543 3.81 1.77250 49.6
36 -87.758 (可変)
像面 ∞
非球面データ
第6面
K = 0.00000e+000 A 4= 1.47329e-005 A 6=-5.50082e-009 A 8=-3.25716e-011 A10= 1.59003e-013
第22面
K = 0.00000e+000 A 4=-8.23158e-006 A 6=-6.80915e-009 A 8= 1.43495e-012 A10=-3.20158e-014
第34面
K = 0.00000e+000 A 4= 3.77114e-006 A 6=-7.83814e-010 A 8= 3.91683e-012 A10=-4.01873e-015
各種データ
ズーム比 2.76
広角 中間 望遠
焦点距離 24.70 34.88 68.18
Fナンバー 2.91 2.91 2.91
半画角（度） 41.22 31.81 17.61
像高 21.64 21.64 21.64
レンズ全長 165.79 174.26 199.67
BF 38.47 42.81 58.00
d 5 3.03 14.26 33.80
d15 17.78 10.67 1.36
d23 1.96 6.12 12.86
d28 11.79 7.63 0.89
d36 38.47 42.81 58.00
ズームレンズ群データ
群 始面 焦点距離
1 1 129.97
2 6 -17.09
3 16 28.36
4 24 -41.20
5 29 49.69
[Numerical Example 2]
Unit mm
Surface data surface number rd nd νd
1 1018.919 1.80 1.84666 23.9
2 84.890 8.21 1.83481 42.7
3 3143.890 0.15
4 59.262 5.79 1.83481 42.7
5 117.304 (variable)
6 * 98.182 0.05 1.52421 51.4
7 53.766 1.20 1.83481 42.7
8 16.625 7.87
9 -43.505 1.00 1.77250 49.6
10 17.574 4.72 1.83400 37.2
11 63.101 0.15
12 53.147 4.51 1.80518 25.4
13 -72.090 3.72
14 -20.873 1.20 1.77250 49.6
15 -33.228 (variable)
16 (Aperture) ∞ 0.49
17 31.905 4.45 1.49700 81.5
18 105.601 0.15
19 37.826 1.60 1.84666 23.9
20 23.210 10.83 1.49700 81.5
21 -68.228 0.15
22 * 71.333 4.07 1.69680 55.5
23 -148.072 (variable)
24 -269.960 5.65 1.84666 23.9
25 -19.352 1.20 1.83400 37.2
26 97.049 3.33
27 -92.477 1.30 1.83400 37.2
28 242.849 (variable)
29 115.000 6.08 1.49700 81.5
30 -44.176 0.15
31 90.778 6.19 1.49700 81.5
32 -55.146 0.00
33 -55.146 2.00 1.84666 23.9
34 * 169.829 0.96
35 329.543 3.81 1.77250 49.6
36 -87.758 (variable)
Image plane ∞
Aspheric data 6th surface
K = 0.00000e + 000 A 4 = 1.47329e-005 A 6 = -5.50082e-009 A 8 = -3.25716e-011 A10 = 1.59003e-013
22nd page
K = 0.00000e + 000 A 4 = -8.23158e-006 A 6 = -6.80915e-009 A 8 = 1.43495e-012 A10 = -3.20158e-014
34th page
K = 0.00000e + 000 A 4 = 3.77114e-006 A 6 = -7.83814e-010 A 8 = 3.91683e-012 A10 = -4.01873e-015
Various data Zoom ratio 2.76
Wide angle Medium Telephoto focal length 24.70 34.88 68.18
F number 2.91 2.91 2.91
Half angle of view (degrees) 41.22 31.81 17.61
Image height 21.64 21.64 21.64
Total lens length 165.79 174.26 199.67
BF 38.47 42.81 58.00
d 5 3.03 14.26 33.80
d15 17.78 10.67 1.36
d23 1.96 6.12 12.86
d28 11.79 7.63 0.89
d36 38.47 42.81 58.00
Zoom lens group data group Start surface Focal length
1 1 129.97
2 6 -17.09
3 16 28.36
4 24 -41.20
5 29 49.69
[数値実施例３]
単位 mm
面データ
面番号 r d nd νd
1 371.811 2.00 1.84666 23.9
2 75.128 9.81 1.83481 42.7
3 1977.368 0.15
4 56.364 5.52 1.83481 42.7
5 96.407 (可変)
6* 111.475 0.05 1.52421 51.4
7 61.920 1.50 1.88300 40.8
8 16.594 8.08
9 -38.790 1.20 1.77250 49.6
10 18.778 5.47 1.83400 37.2
11 740.429 0.15
12 89.499 3.52 1.80518 25.4
13 -81.521 3.18
14 -22.389 1.20 1.61800 63.3
15 -52.289 (可変)
16(絞り) ∞ 0.49
17 29.528 4.57 1.49700 81.5
18 104.655 0.15
19 31.270 1.60 1.83400 37.2
20 18.877 12.55 1.49700 81.5
21 -108.113 0.15
22* 58.016 6.59 1.72916 54.7
23 -37.356 1.50 1.83400 37.2
24 -80.142 (可変)
25 -113.873 4.06 1.80809 22.8
26 -22.801 1.20 1.83481 42.7
27* 47.494 (可変)
28 67.541 5.07 1.59240 68.3
29 -38.417 0.15
30 -106.637 3.42 1.49700 81.5
31 -30.155 1.50 1.84666 23.9
32 206.883 4.03
33* 135.112 2.87 1.85006 40.2
34 -105.539 (可変)
像面 ∞
非球面データ
第6面
K = 0.00000e+000 A 4= 1.53494e-005 A 6=-5.20845e-009 A 8=-4.15827e-011 A10= 1.50211e-013
第22面
K = 0.00000e+000 A 4=-1.09937e-005 A 6=-2.18767e-009 A 8=-1.23509e-011 A10= 3.51553e-014
第27面
K = 0.00000e+000 A 4=-4.73774e-006 A 6= 1.89462e-009 A 8=-3.41239e-011 A10= 1.42519e-013
第33面
K = 0.00000e+000 A 4=-4.73629e-006 A 6=-2.17487e-009 A 8= 9.92522e-012 A10=-2.20403e-014
各種データ
ズーム比 3.22
広角 中間 望遠
焦点距離 24.70 39.67 79.43
Fナンバー 2.91 2.91 2.91
半画角（度） 41.22 28.61 15.24
像高 21.64 21.64 21.64
レンズ全長 161.98 171.74 200.99
BF 38.35 46.17 57.64
d 5 2.51 14.41 39.54
d15 17.72 7.77 0.41
d24 1.02 5.87 10.52
d27 10.64 5.79 1.14
d34 38.35 46.17 57.64
ズームレンズ群データ
群 始面 焦点距離
1 1 122.04
2 6 -15.92
3 16 26.21
4 25 -38.11
5 28 57.05
[Numerical Example 3]
Unit mm
Surface data surface number rd nd νd
1 371.811 2.00 1.84666 23.9
2 75.128 9.81 1.83481 42.7
3 1977.368 0.15
4 56.364 5.52 1.83481 42.7
5 96.407 (variable)
6 * 111.475 0.05 1.52421 51.4
7 61.920 1.50 1.88300 40.8
8 16.594 8.08
9 -38.790 1.20 1.77250 49.6
10 18.778 5.47 1.83400 37.2
11 740.429 0.15
12 89.499 3.52 1.80518 25.4
13 -81.521 3.18
14 -22.389 1.20 1.61800 63.3
15 -52.289 (variable)
16 (Aperture) ∞ 0.49
17 29.528 4.57 1.49700 81.5
18 104.655 0.15
19 31.270 1.60 1.83400 37.2
20 18.877 12.55 1.49700 81.5
21 -108.113 0.15
22 * 58.016 6.59 1.72916 54.7
23 -37.356 1.50 1.83400 37.2
24 -80.142 (variable)
25 -113.873 4.06 1.80809 22.8
26 -22.801 1.20 1.83481 42.7
27 * 47.494 (variable)
28 67.541 5.07 1.59240 68.3
29 -38.417 0.15
30 -106.637 3.42 1.49700 81.5
31 -30.155 1.50 1.84666 23.9
32 206.883 4.03
33 * 135.112 2.87 1.85006 40.2
34 -105.539 (variable)
Image plane ∞
Aspheric data 6th surface
K = 0.00000e + 000 A 4 = 1.53494e-005 A 6 = -5.20845e-009 A 8 = -4.15827e-011 A10 = 1.50211e-013
22nd page
K = 0.00000e + 000 A 4 = -1.09937e-005 A 6 = -2.18767e-009 A 8 = -1.23509e-011 A10 = 3.51553e-014
27th page
K = 0.00000e + 000 A 4 = -4.73774e-006 A 6 = 1.89462e-009 A 8 = -3.41239e-011 A10 = 1.42519e-013
Side 33
K = 0.00000e + 000 A 4 = -4.73629e-006 A 6 = -2.17487e-009 A 8 = 9.92522e-012 A10 = -2.20403e-014
Various data Zoom ratio 3.22
Wide angle Medium Telephoto focal length 24.70 39.67 79.43
F number 2.91 2.91 2.91
Half angle of view (degrees) 41.22 28.61 15.24
Image height 21.64 21.64 21.64
Total lens length 161.98 171.74 200.99
BF 38.35 46.17 57.64
d 5 2.51 14.41 39.54
d15 17.72 7.77 0.41
d24 1.02 5.87 10.52
d27 10.64 5.79 1.14
d34 38.35 46.17 57.64
Zoom lens group data group Start surface Focal length
1 1 122.04
2 6 -15.92
3 16 26.21
4 25 -38.11
5 28 57.05
Claims (7)
前記第４レンズ群は、光軸と垂直方向の成分を持つ方向に移動することによって結像位置を光軸に対して垂直方向に移動させる負の屈折力の部分群を有し、前記第１レンズ群の焦点距離をｆ１、前記第３レンズ群の焦点距離をｆ３とするとき
４．３＜ｆ１／ｆ３＜６．０
なる条件式を満足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 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 group having a negative refractive power. When consists fifth lens unit having positive refractive power, the zoom lens spacing of the lens units vary adjacent zooming,
The fourth lens group has a negative refractive power subgroup that moves the imaging position in a direction perpendicular to the optical axis by moving in a direction having a component perpendicular to the optical axis. When the focal length of the lens unit is f1, and the focal length of the third lens unit is f3, 4.3 <f1 / f3 <6.0
A zoom lens satisfying the following conditional expression:
０．３＜｜ｆＩＳ／ｆｔ｜＜１．５
なる条件式を満足することを特徴とする請求項１に記載のズームレンズ。 When the focal length of the partial group included in the fourth lens group is fIS, and the focal length of the entire system at the telephoto end is ft,
0.3 <| fIS / ft | <1.5
The zoom lens according to claim 1 , wherein the following conditional expression is satisfied.
０．１５＜｜ｆ２／ｆｔ｜＜０．４０
なる条件式を満足することを特徴とする請求項１又は２に記載のズームレンズ。 When the focal length of the second lens group is f2, and the focal length of the entire system at the telephoto end is ft,
0.15 <| f2 / ft | <0.40
The zoom lens according to claim 1 or 2, characterized by satisfying the conditional expression.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012047847A JP5901357B2 (en) | 2012-03-05 | 2012-03-05 | Zoom lens and imaging apparatus having the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012047847A JP5901357B2 (en) | 2012-03-05 | 2012-03-05 | Zoom lens and imaging apparatus having the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013182246A JP2013182246A (en) | 2013-09-12 |
| JP2013182246A5 true JP2013182246A5 (en) | 2015-04-16 |
| JP5901357B2 JP5901357B2 (en) | 2016-04-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6213912B2 (en) * | 2013-05-02 | 2017-10-18 | 株式会社タムロン | Small high zoom lens |
| WO2015016112A1 (en) | 2013-07-29 | 2015-02-05 | 株式会社ニコン | Variable power optical system, optical device and method for manufacturing variable power optical system |
| JP2015075570A (en) * | 2013-10-08 | 2015-04-20 | キヤノン株式会社 | Zoom lens and imaging device having the same |
| TWI470267B (en) * | 2013-10-14 | 2015-01-21 | Largan Precision Co Ltd | Optical image capturing system, image capturing device and mobile terminal |
| JP6231372B2 (en) * | 2013-12-18 | 2017-11-15 | 株式会社タムロン | Zoom lens and imaging device |
| JP6289132B2 (en) * | 2014-01-31 | 2018-03-07 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP6291407B2 (en) | 2014-12-02 | 2018-03-14 | 富士フイルム株式会社 | Zoom lens and imaging device |
| JP6291408B2 (en) | 2014-12-02 | 2018-03-14 | 富士フイルム株式会社 | Zoom lens and imaging device |
| US10782512B2 (en) | 2015-05-29 | 2020-09-22 | Nikon Corporation | Zoom optical system, optical device and method for manufacturing the zoom optical system |
| JP6948502B2 (en) * | 2016-03-04 | 2021-10-13 | 株式会社シグマ | Variable magnification optical system |
| JP2018045261A (en) * | 2017-12-26 | 2018-03-22 | 株式会社ニコン | Variable magnification optical system, and optical device |
| JP7146497B2 (en) * | 2018-07-13 | 2022-10-04 | キヤノン株式会社 | Zoom lens and imaging device |
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| JP4829586B2 (en) * | 2005-10-13 | 2011-12-07 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP4799210B2 (en) * | 2006-02-22 | 2011-10-26 | パナソニック株式会社 | Zoom lens system and camera system including the same |
| JP4982787B2 (en) * | 2006-03-28 | 2012-07-25 | コニカミノルタアドバンストレイヤー株式会社 | Imaging optical system and imaging apparatus |
| JP5006634B2 (en) * | 2006-12-20 | 2012-08-22 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP5064837B2 (en) * | 2007-03-01 | 2012-10-31 | キヤノン株式会社 | Zoom lens with anti-vibration function |
| JP5494955B2 (en) * | 2010-04-14 | 2014-05-21 | 株式会社ニコン | Variable magnification optical system and optical apparatus provided with the variable magnification optical system |
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