JP2020085935A - Zoom lens and imaging apparatus - Google Patents

Zoom lens and imaging apparatus Download PDF

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JP2020085935A
JP2020085935A JP2018214835A JP2018214835A JP2020085935A JP 2020085935 A JP2020085935 A JP 2020085935A JP 2018214835 A JP2018214835 A JP 2018214835A JP 2018214835 A JP2018214835 A JP 2018214835A JP 2020085935 A JP2020085935 A JP 2020085935A
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lens
lens group
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zoom
positive
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尚利 小川
Naotoshi Ogawa
尚利 小川
雅雄 堀
Masao Hori
雅雄 堀
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Canon Inc
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Abstract

To provide a zoom lens which is advantageous in terms of temperature stability of focus, and correction of on-axis chromatic aberration and chromatic aberration of magnification over an entire zoom range, for example.SOLUTION: The zoom lens of the present invention is comprised of, in order from an object side to an image side, a positive first lens group configured to be stationary when zooming, a front movable lens group comprised of one or two negative sub-lens groups configured to move for zooming, a rear movable lens group comprised of two sub-lens groups configured to move for zooming, and a final lens group configured to be stationary when zooming, the final lens group is comprised of, in order from the object side to the image side, a negative lens group with negative refractive power and including a negative lens An, and a positive lens group with positive refractive power and including a positive lens Bp. A lateral magnification of the final lens group, a temperature coefficient of a refractive index and Abbe number of the negative lens An, and a partial dispersion ratio and Abbe number of the positive lens Bp are each set appropriately.SELECTED DRAWING: Figure 1

Description

本発明は、ズームレンズ及び撮像装置に関するものである。 The present invention relates to a zoom lens and an imaging device.

近年、テレビカメラや映画用カメラ、写真用カメラ等の撮像装置には、広画角、高ズーム比かつ高い光学性能を有したズームレンズが要望されている。特に、プロフェッショナルの動画撮影システムとしてのテレビ、映画用カメラに用いられているCCDやCMOS等の撮像デバイスは、撮像範囲全体が略均一の解像力を有している。そのため、これを用いるズームレンズに対しては、画面中心から画面周辺まで解像力が略均一で、色収差の少ないことが要求されている。 In recent years, zoom lenses having a wide angle of view, a high zoom ratio, and high optical performance have been demanded for image pickup apparatuses such as television cameras, movie cameras, and photographic cameras. In particular, an image pickup device such as a CCD or a CMOS used in a television or a movie camera as a professional moving image shooting system has a substantially uniform resolution over the entire image pickup range. Therefore, a zoom lens using this is required to have a substantially uniform resolution from the center of the screen to the periphery of the screen, and to have little chromatic aberration.

広画角、高ズーム比のズームレンズとして、最も物体側に正の屈折力のレンズ群を配置した5つのレンズ群より成るポジティブリード型の5群ズームレンズが知られている。たとえば、特許文献1では、変倍比106程度、広角端の半画角34.5°程度のズームレンズが開示されている。また、特許文献2では変倍比110程度、広角端の半画角32.0°程度のズームレンズが開示されている。 As a zoom lens having a wide angle of view and a high zoom ratio, a positive lead type five-group zoom lens including five lens groups in which a lens group having a positive refractive power is arranged closest to the object is known. For example, Patent Document 1 discloses a zoom lens having a zoom ratio of about 106 and a half angle of view of about 34.5° at the wide-angle end. Patent Document 2 discloses a zoom lens having a zoom ratio of about 110 and a half angle of view of about 32.0° at the wide-angle end.

また、近年ではカメラの高精細化が進み、より高性能なレンズが求められるようになってきていることに加えて、焦点深度も浅くなってきている。そのため、環境温度が変化した際のピントずれを従来よりも高精度に補正することが必要となってきている。特に第1レンズ群でフォーカスを行うテレビカメラ用レンズでは、フォーカシングによるピント変化が小さい広角側においてピントずれを補正することが重要である。 In addition, in recent years, the definition of cameras has become higher and higher-performance lenses have been demanded, and the depth of focus has become shallower. Therefore, it is necessary to correct the focus shift when the environmental temperature changes with higher accuracy than before. In particular, in a television camera lens in which focusing is performed by the first lens group, it is important to correct the focus shift on the wide angle side where the focus change due to focusing is small.

国際公開2014−73186号International Publication No. 2014-73186 特開2014−38238号公報JP, 2014-38238, A

前述したポジティブリード型の5群ズームレンズでは、ズーム全域での色収差の変化を少なくするために、第3レンズ群および、第4レンズ群に低分散かつ異常分散性の高い光学材料を使用している。これらの材料は表1に示すように屈折率の温度係数が負の値であるため、環境温度が変化した際のピントずれの原因となる。 In the positive lead type 5-group zoom lens described above, an optical material having low dispersion and high anomalous dispersion is used for the third lens group and the fourth lens group in order to reduce changes in chromatic aberration in the entire zoom range. There is. Since the temperature coefficient of the refractive index of these materials is a negative value as shown in Table 1, it causes a focus shift when the environmental temperature changes.

広角側において環境温度が変化した際のピントずれを抑制するためには、変倍時固定の最終レンズ群の正レンズに屈折率の温度係数が正の材料を選択し、負レンズに屈折率の温度係数が負の材料を選択する必要がある。一方で軸上色収差と倍率収差を良好に補正するためにも、材料の選択が重要となってくる。 In order to suppress focus shift when the ambient temperature changes on the wide-angle side, select a material with a positive temperature coefficient of refractive index for the positive lens of the final lens group that is fixed during zooming, and select a material with a negative refractive index for the negative lens. It is necessary to select a material with a negative temperature coefficient. On the other hand, the material selection becomes important in order to satisfactorily correct the axial chromatic aberration and the magnification aberration.

そこで本発明は、例えば、ピントの温度安定性、ならびに全ズーム域にわたる軸上色収差および倍率色収差の補正の点で有利なズームレンズを提供することを目的とする。 Therefore, an object of the present invention is to provide a zoom lens that is advantageous in terms of, for example, temperature stability of focus and correction of axial chromatic aberration and lateral chromatic aberration over the entire zoom range.

上記目的を達成するために、本発明のズームレンズは、物体側から像側へ順に、変倍のためには移動しない正の第1レンズ群と、変倍のために移動する1つまたは2つの負のサブレンズ群から構成される前移動レンズ群と、変倍のために移動する2つのサブレンズ群から構成される後移動レンズ群と、変倍のためには移動しない最終レンズ群と、からなり、前記最終レンズ群は、物体側から像側へ順に、負レンズAnを含む負の屈折力の負レンズ群と、正レンズBpを含む正の屈折力の正レンズ群とからなり、前記最終レンズ群の横倍率をβLとし、前記負レンズAnの屈折率の温度係数およびアッベ数をそれぞれdNdTAnおよびνdAnとし、前記正レンズBpの部分分散比およびアッベ数をそれぞれθgFBpおよびνdBpとして、条件式
0.8≦β≦3.0
−3.0≦dn/dTAn≦4.2
30.0≦νdAn≦70.2
0.01≦0.00162×νdBp−0.6414+θgFBp≦0.05
を満足することを特徴とする
なお、屈折率の温度係数は、20℃ないし40℃の空気中における相対屈折率の温度係数とし、アッベ数νおよび部分分散比θは、フラウンフォーファ線のg線、F線、d線、およびC線に対する屈折率をそれぞれNg、NF、Nd、およびNCとして、それぞれ
ν=(Nd−1)/(NF−NC)、および
θ=(Ng−NF)/(NF−NC)
で表される。
To achieve the above object, the zoom lens of the present invention comprises, in order from the object side to the image side, a positive first lens group that does not move for zooming, and one or two lenses that move for zooming. A front lens group consisting of two negative sub-lens groups, a rear lens group consisting of two sub-lens groups that move for zooming, and a final lens group that does not move for zooming. And the final lens group comprises, in order from the object side to the image side, a negative lens group having a negative refractive power including a negative lens An and a positive lens group having a positive refractive power including a positive lens Bp, The lateral magnification of the final lens group is βL, the temperature coefficient of the refractive index of the negative lens An and the Abbe number are dNdTAn and νdAn, respectively, and the partial dispersion ratio and the Abbe number of the positive lens Bp are θgFBp and νdBp, respectively. Formula 0.8≦β≦3.0
−3.0≦dn/dTAn≦4.2
30.0≦νdAn≦70.2
0.01≦0.00162×ν dBp−0.6414+θgFBp≦0.05
The temperature coefficient of the refractive index is the temperature coefficient of the relative refractive index in air at 20° C. to 40° C., and the Abbe number ν and the partial dispersion ratio θ are Let ν=(Nd-1)/(NF-NC) and θ=(Ng-NF), where Ng, NF, Nd, and NC are the refractive indices for g-line, F-line, d-line, and C-line, respectively. / (NF-NC)
It is represented by.

本発明によれば、例えば、ピントの温度安定性、ならびに全ズーム域にわたる軸上色収差および倍率色収差の補正の点で有利なズームレンズを提供することができる。 According to the present invention, it is possible to provide a zoom lens that is advantageous in terms of, for example, temperature stability of focus and correction of axial chromatic aberration and lateral chromatic aberration over the entire zoom range.

数値実施例1の広角端において無限遠合焦時のレンズ断面図。FIG. 6 is a lens cross-sectional view of Numerical Embodiment 1 at the wide-angle end when focused on infinity. 数値実施例1で無限遠合焦時の広角端(a)、f=118.64mm(b)、望遠端(c)、エクステンダ挿入時の広角端(d)の縦収差図。FIG. 9 is a longitudinal aberration diagram at the wide-angle end (a) when focused on infinity, f=118.64 mm (b), the telephoto end (c), and the wide-angle end (d) when the extender is inserted in Numerical Example 1. 数値実施例1で無限遠合焦時の望遠端(a)、望遠端(b)で防振レンズ群が0.7mm光軸に対してシフトした際の横収差図。FIG. 7 is a lateral aberration diagram when the vibration-proof lens group is shifted with respect to the optical axis by 0.7 mm at the telephoto end (a) and the telephoto end (b) when focusing on infinity in Numerical Example 1. 数値実施例2の広角端において無限遠合焦時のレンズ断面図。FIG. 6 is a lens cross-sectional view of Numerical Example 2 at the wide-angle end when focused on infinity. 数値実施例2で無限遠合焦時の広角端(a)、f=70.52mm(b)、望遠端(c)の縦収差図。FIG. 10 is a longitudinal aberration diagram at the wide-angle end (a), f=70.52 mm (b), and the telephoto end (c) when focused on infinity in Numerical Example 2. 数値実施例3の広角端において無限遠合焦時のレンズ断面図。FIG. 9 is a lens cross-sectional view of Numerical Example 3 at the wide-angle end when focused on infinity. 数値実施例3で無限遠合焦時の広角端(a)、f=99.40mm(b)、望遠端(c)の縦収差図。FIG. 11 is a longitudinal aberration diagram at the wide-angle end (a), f=99.40 mm (b), and the telephoto end (c) when focused on infinity in Numerical Example 3. 数値実施例4の広角端において無限遠合焦時のレンズ断面図。16 is a lens cross-sectional view of Numerical Example 4 at the wide-angle end when focused on infinity. 数値実施例4で無限遠合焦時の広角端(a)、f=66.57mm(b)、望遠端(c)の縦収差図。FIG. 11 is a longitudinal aberration diagram at the wide-angle end (a), f=66.57 mm (b), and the telephoto end (c) when focused on infinity in Numerical Example 4. 数値実施例5の広角端において無限遠合焦時のレンズ断面図。FIG. 16 is a lens cross-sectional view of Numerical Example 5 at the wide-angle end when focused on infinity. 数値実施例5で無限遠合焦時の広角端(a)、f=118.64mm(b)、望遠端(c)の縦収差図。FIG. 16 is a longitudinal aberration diagram at the wide-angle end (a), f=118.64 mm (b), and the telephoto end (c) when focused on infinity in Numerical Example 5. 数値実施例6の広角端において無限遠合焦時のレンズ断面図。FIG. 16 is a lens cross-sectional view of Numerical Example 6 at the wide-angle end when focused on infinity. 数値実施例6で無限遠合焦時の広角端(a)、f=100.00mm(b)、望遠端(c)の縦収差図。FIG. 16 is a longitudinal aberration diagram at the wide-angle end (a), f=100.00 mm (b), and the telephoto end (c) when focused on infinity in Numerical Example 6. 本発明の撮像装置の要部概略図。FIG. 3 is a schematic view of a main part of the image pickup apparatus of the present invention. 数値実施例1のズームレンズの広角端における第5レンズ群L5での軸上および軸外(ω=30.2°)における光路図。FIG. 6 is an optical path diagram on-axis and off-axis (ω=30.2°) in the fifth lens unit L5 at the wide-angle end of the zoom lens of Numerical Example 1.

以下に、本発明の好ましい実施の形態を、添付の図面に基づいて詳細に説明する。
本発明のズームレンズは、物体側から像側へ順に、変倍のためには移動しない正の第1レンズ群と、変倍のために移動する1つまたは2つの負のサブレンズ群から構成される前移動レンズ群と、変倍のために移動する2つのサブレンズ群から構成される後移動レンズ群と、変倍のためには移動しない最終レンズ群とから構成されている。
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The zoom lens of the present invention comprises, in order from the object side to the image side, a positive first lens group that does not move for zooming, and one or two negative sub-lens groups that move for zooming. The lens group includes a front moving lens group, a rear moving lens group including two sub-lens groups that move for zooming, and a final lens group that does not move for zooming.

ここでレンズ群が変倍のためには移動しないというのは、レンズ群が変倍を行う目的で駆動されることは無いが、変倍とフォーカス調整とを同時に行う場合があれば、フォーカス調整のために移動することはあり得るということである。 The fact that the lens group does not move for zooming means that the lens group is not driven for the purpose of zooming, but if zooming and focus adjustment are performed at the same time, focus adjustment It is possible to move for.

図15は後述する数値実施例1のズームレンズの広角端における最終レンズ群である第5レンズ群L5での軸上および軸外(ω=30.2°)における光路図を示している。図中、軸上光線高さがおおよそ一定であるのに対して、軸外主光線高さは像面に近いほど高い位置を通ることがわかる。すなわち、軸上色収差への寄与は第5群内でおおよそ一定であるのに対して、倍率色収差への寄与は第5群内の像面に近い位置で大きくなる。そのため、軸上色収差と倍率色収差を良好に補正するためには、第5群内の後側のレンズで倍率色収差を補正し、補正過剰となった軸上色収差を第5群内の前側のレンズで逆方向に補正することになる。すなわち第5群内で2次スペクトル補正も含めた色収差補正を行うためには、第5群内の後側の凸レンズには異常分散性の高い材料を用い、凹レンズには異常分散性の低い材料を用いる必要がある。しかしながら、前述したとおり異常分散性の高い材料は屈折率の温度係数が負もしくは、0近傍となる。加えて異常分散性の低い材料は表2に示すように、屈折率の温度係数が4を超える範囲に存在する。そのため、軸上色収差と倍率色収差を補正しながらも、温度変化によるピントずれを抑制することは困難となる。 FIG. 15 is an optical path diagram on-axis and off-axis (ω=30.2°) in the fifth lens unit L5 which is the final lens unit at the wide-angle end of the zoom lens of Numerical Example 1 described later. In the figure, it can be seen that the on-axis ray height is approximately constant, while the off-axis chief ray height passes through a higher position as it approaches the image plane. That is, while the contribution to the axial chromatic aberration is approximately constant in the fifth lens group, the contribution to the lateral chromatic aberration becomes large at a position near the image plane in the fifth lens group. Therefore, in order to satisfactorily correct the axial chromatic aberration and the lateral chromatic aberration, the lateral chromatic aberration is corrected by the rear lens in the fifth group, and the overcorrected axial chromatic aberration is corrected by the front lens in the fifth group. Will correct in the opposite direction. That is, in order to perform chromatic aberration correction including secondary spectrum correction in the fifth group, a material having high anomalous dispersion is used for the rear convex lens in the fifth group, and a material having low anomalous dispersion is used for the concave lens. Need to be used. However, as described above, a material having a high anomalous dispersion has a negative temperature coefficient of refractive index or is close to zero. In addition, as shown in Table 2, the material having low anomalous dispersion is present in the range where the temperature coefficient of refractive index exceeds 4. Therefore, it is difficult to suppress the focus shift due to the temperature change while correcting the axial chromatic aberration and the chromatic aberration of magnification.

そこで、本発明では広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正するために、第5レンズ群の近軸横倍率と第5レンズ群内の硝材を適切に設定している。 Therefore, in the present invention, in order to satisfactorily correct the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range while suppressing the focus shift due to the temperature change on the wide angle side, the paraxial lateral magnification of the fifth lens group and the fifth The glass material in the lens group is set appropriately.

本発明のズームレンズは、物体側から像側へ順に、変倍のためには移動しない正の第1レンズ群と、変倍のために移動する1つまたは2つの負のサブレンズ群から構成される前移動レンズ群と、変倍のために移動する2つのサブレンズ群から構成される後移動レンズ群と、変倍のためには移動しない最終レンズ群とからなる。 The zoom lens of the present invention comprises, in order from the object side to the image side, a positive first lens group that does not move for zooming, and one or two negative sub-lens groups that move for zooming. The lens group includes a front lens group that is moved, a rear lens group that includes two sub lens groups that move for zooming, and a final lens group that does not move for zooming.

最終レンズ群は物体側から像側へ順に、負レンズAnを含む負の屈折力の負レンズ群LA、正レンズBpを含む正の屈折力の正レンズ群LBとからなる。最終レンズ群の横倍率をβLとし、負レンズAnの屈折率の温度係数およびアッベ数をそれぞれdNdTAn、νdAnとし、正レンズBpの部分分散比およびアッベ数をそれぞれθgFBp、νdBpとして、条件式
0.8≦βL≦3.0 ・・・(1)
−3.0≦dn/dTAn≦4.2 ・・・(2)
30.0≦νdAn≦70.2 ・・・(3)
0.01≦0.00162×νdBp−0.6414+θgFBp≦0.05
・・・(4)
を満たしている。なお、屈折率の温度係数は20℃〜40℃の空気中における相対屈折率の温度係数であり、アッベ数νおよび部分分散比θは、フラウンフォーファ線のg線、F線、d線、C線に対する屈折率をそれぞれNg、NF、Nd、NCとして、それぞれ
ν=(Nd−1)/(NF−NC)
θ=(Ng−NF)/(NF−NC)
で表される。
The final lens group includes, in order from the object side to the image side, a negative lens group LA having a negative refractive power including a negative lens An and a positive lens group LB having a positive refractive power including a positive lens Bp. The lateral magnification of the final lens group is βL, the temperature coefficient of the refractive index of the negative lens An and the Abbe number are dNdTAn and νdAn, respectively, and the partial dispersion ratio and the Abbe number of the positive lens Bp are θgFBp and νdbp, respectively. 8≦βL≦3.0 (1)
−3.0≦dn/dTAn≦4.2 (2)
30.0≦νdAn≦70.2 (3)
0.01≦0.00162×ν dBp−0.6414+θgFBp≦0.05
...(4)
Meets The temperature coefficient of the refractive index is the temperature coefficient of the relative refractive index in the air of 20°C to 40°C, and the Abbe number ν and the partial dispersion ratio θ are g-line, F-line and d-line of the Fraunhofer line. , Ν=(Nd-1)/(NF-NC), where Ng, NF, Nd, and NC are the refractive indices for the C-line, respectively.
θ=(Ng-NF)/(NF-NC)
It is represented by.

条件式(1)は最終レンズ群の横倍率を規定している。これにより最終レンズ群よりも物体側の温度変化によるピントずれへの寄与を適切にすることで、温度変化によるピントずれの抑制が可能となる。 Conditional expression (1) defines the lateral magnification of the final lens group. This makes it possible to suppress the focus shift due to the temperature change by appropriately contributing to the focus shift due to the temperature change on the object side of the final lens group.

条件式(1)の上限を超えると、最終群の拡大率が小さくなることで、ズームレンズの広角化と小型化の両立が困難となる。条件式(1)の下限を超えると、最終群より物体側の温度変化によるピントずれへの寄与が大きくなりすぎることで、温度変化によるピントずれの抑制が困難となる。更に好ましくは条件式(1)を次のように設定するのが良い。
0.83≦βL≦2.8 ・・・(1a)
If the upper limit of conditional expression (1) is exceeded, the zoom ratio of the final lens group will become small, making it difficult to achieve both wide-angle and compact zoom lenses. When the value goes below the lower limit of the conditional expression (1), the contribution to the focus shift due to the temperature change on the object side of the final group becomes too large, so that it becomes difficult to suppress the focus shift due to the temperature change. More preferably, conditional expression (1) should be set as follows.
0.83≦βL≦2.8 (1a)

条件式(2)から条件式(4)は最終レンズ群内の硝材特性について規定している。これにより軸上色収差及び、倍率色収差が良好に補正しながらも温度変化によるピントずれの抑制が可能となる。 Conditional expressions (2) to (4) define the glass material characteristics in the final lens group. As a result, it becomes possible to suppress the focus shift due to the temperature change while satisfactorily correcting the axial chromatic aberration and the lateral chromatic aberration.

条件式(2)の上限を超えると、負レンズによる温度変化によるピントずれの補正効果が少なくなってしまう。条件式(2)の下限を超えると、前述したとおり、異常分散性の高い材料を使用することとなるため、軸上色収差の補正不足となってしまう。更に好ましくは条件式(2)を次のように設定するのが良い。
0.1≦dn/dTAn≦2.1 ・・・(2a)
If the upper limit of conditional expression (2) is exceeded, the effect of correcting the focus shift due to the temperature change by the negative lens will be reduced. If the lower limit of conditional expression (2) is exceeded, as described above, a material having high anomalous dispersion will be used, and axial chromatic aberration will be insufficiently corrected. More preferably, conditional expression (2) should be set as follows.
0.1≦dn/dTAn≦2.1 (2a)

条件式(3)の上下限を超えると、軸上色収差と倍率色収差の両立が困難となる。更に好ましくは条件式(3)を次のように設定するのが良い。
35.0≦νdAn≦55.0 ・・・(3a)
If the upper and lower limits of conditional expression (3) are exceeded, it becomes difficult to achieve both axial chromatic aberration and lateral chromatic aberration. More preferably, conditional expression (3) should be set as follows.
35.0≦νdAn≦55.0 (3a)

条件式(4)の下限を超えると、倍率色収差の補正が困難となる。更に好ましくは条件式(4)を次のように設定するのが良い。
0.02≦0.00162×νdBp−0.6414+θgFBp≦0.04
・・・(4a)
If the lower limit of conditional expression (4) is exceeded, it becomes difficult to correct lateral chromatic aberration. More preferably, conditional expression (4) should be set as follows.
0.02≦0.00162×ν dBp−0.6414+θgFBp≦0.04
...(4a)

さらに本発明において、負レンズ群LAの焦点距離をfLA、負レンズAnの焦点距離をfAnとして、条件式
0.3≦fAn/fLA≦1.5 ・・・(5)
を満足することが好ましい。
Further, in the present invention, the focal length of the negative lens group LA is fLA and the focal length of the negative lens An is fAn, and the conditional expression 0.3≦fAn/fLA≦1.5 (5)
Is preferably satisfied.

条件式(5)の上限を超えると、負レンズAnの屈折力が弱くなりすぎ、温度変化によるピント補正効果を得ることが困難となる。条件式(5)の下限を超えると、負レンズAnの屈折力が強くなりすぎ、諸収差の補正が困難となる。更に好ましくは条件式(5)を次のように設定するのが良い。
0.4≦fAn/fLA≦1.0 ・・・(5a)
If the upper limit of conditional expression (5) is exceeded, the refractive power of the negative lens An becomes too weak, and it becomes difficult to obtain the focus correction effect due to temperature changes. If the lower limit of conditional expression (5) is exceeded, the refracting power of the negative lens An becomes too strong, making it difficult to correct various aberrations. More preferably, conditional expression (5) should be set as follows.
0.4≦fAn/fLA≦1.0 (5a)

さらに本発明において、負レンズ群LAは少なくとも2枚の負レンズと1枚の正レンズApを有し、正レンズApのアッベ数をνdAp、部分分散比をθgFApとして、条件式
0≦0.00162×νdAp−0.6414+θgFAp≦0.02
・・・(6)
22.8<νdAp≦35.0 ・・・(7)
を満足することが好ましい。
Further, in the present invention, the negative lens group LA includes at least two negative lenses and one positive lens Ap, the Abbe number of the positive lens Ap is νdAp, the partial dispersion ratio is θgFAp, and the conditional expression 0≦0.00162 is satisfied. ×νdAp−0.6414+θgFAp≦0.02
...(6)
22.8<νdAp≦35.0 (7)
Is preferably satisfied.

条件式(6)、(7)上下限が満たされないと、軸上色収差が補正過剰もしくは補正不足となってしまう。もしくは、色消しを行う際の各レンズの屈折力が強くなりすぎてしまい、諸収差の補正が困難となってしまう。更に好ましくは条件式(6)、(7)を次のように設定するのが良い。
0.002≦0.00162×νdAp−0.6414+θgFAp≦0.013
・・・(6a)
24.0≦νdAp≦31.0 ・・・(7a)
If the upper and lower limits of conditional expressions (6) and (7) are not satisfied, axial chromatic aberration is overcorrected or undercorrected. Alternatively, the refractive power of each lens at the time of achromatization becomes too strong, which makes it difficult to correct various aberrations. More preferably, conditional expressions (6) and (7) should be set as follows.
0.002≦0.00162×νdAp−0.6414+θgFAp≦0.013
...(6a)
24.0≦νdAp≦31.0 (7a)

さらに本発明において、正レンズApの屈折率の温度係数をdNdTApとし、正レンズApの焦点距離をfApとして、条件式
−1.5≦fAp/fLA≦−0.3 ・・・(8)
−1.0≦dn/dndTAp≦6.0 ・・・(9)
を満足することが好ましい。
Further, in the present invention, the temperature coefficient of the refractive index of the positive lens Ap is dNdTAp, the focal length of the positive lens Ap is fAp, and the conditional expression −1.5≦fAp/fLA≦−0.3 (8)
−1.0≦dn/dndTAp≦6.0 (9)
Is preferably satisfied.

条件式(8)、(9)上下限が満たされないと、温度変化によるピント変化の抑制が困難となってしまう。更に好ましくは条件式(8)、(9)を次のように設定するのが良い。
−1.1≦fAp/fLA≦−0.3 ・・・(8a)
3.0≦dn/dndTAp≦5.5 ・・・(9a)
If the upper and lower limits of conditional expressions (8) and (9) are not satisfied, it will be difficult to suppress focus change due to temperature change. More preferably, conditional expressions (8) and (9) should be set as follows.
−1.1≦fAp/fLA≦−0.3 (8a)
3.0≦dn/dndTAp≦5.5 (9a)

さらに本発明において、正レンズ群LBの焦点距離をfLBとし、正レンズBpの焦点距離をfBpとし、アッベ数をνdBpとして、条件式
17.4≦νdBp≦30.0 ・・・(10)
0.2≦fBp/fLB≦1.0 ・・・(11)
を満足することが好ましい。
Further, in the present invention, the focal length of the positive lens unit LB is fLB, the focal length of the positive lens Bp is fBp, and the Abbe number is νdBp. Conditional expression 17.4≤νdBp≤30.0 (10)
0.2≦fBp/fLB≦1.0 (11)
Is preferably satisfied.

条件式(10)、(11)上下限が満たされないと、倍率収差の補正が困難となる。更に好ましくは条件式(10)、(11)を次のように設定するのが良い。
17.4≦νdBp≦25.5 ・・・(10a)
0.25≦fBp/fLB≦0.8 ・・・(11a)
If the upper and lower limits of conditional expressions (10) and (11) are not satisfied, it becomes difficult to correct the magnification aberration. More preferably, the conditional expressions (10) and (11) should be set as follows.
17.4≦νdBp≦25.5 (10a)
0.25≦fBp/fLB≦0.8 (11a)

以下に本発明の各実施例のズームレンズのレンズ構成の特徴について説明する。 The features of the lens configuration of the zoom lens of each embodiment of the present invention will be described below.

本発明の実施例1のズームレンズは、物体側から順に、変倍のためには移動しない正の屈折力の第1レンズ群L1と、変倍のために移動する負の屈折力の第2レンズ群L2と、変倍のために移動する正の屈折力の第3レンズ群L3と、変倍のために移動する正の屈折力の第4レンズ群L4と、変倍のためには移動しない結像作用を有する正の屈折力の第5レンズ群L5と、から構成される。各レンズ断面図において、左方が被写体(物体)側(前方)で右方が像側(後方)を示す。 The zoom lens of Embodiment 1 of the present invention has, in order from the object side, a first lens unit L1 having a positive refractive power that does not move for zooming, and a second lens group having a negative refractive power that moves for zooming. A lens unit L2, a third lens unit L3 having a positive refractive power which moves for zooming, a fourth lens unit L4 having a positive refractive power which moves for zooming, and a lens unit L4 which moves for zooming. And a fifth lens unit L5 having a positive refractive power and having an image forming action. In each lens cross-sectional view, the left side indicates the subject (object) side (front side) and the right side indicates the image side (rear side).

第1レンズ群L1は、フォーカスレンズ群L12、フォーカスのためには移動しない固定レンズ群L11を含む。フォーカスレンズ群L12は、無限遠物体から近距離物体へのフォーカスに際して物体側へ移動する。本実施例のズームレンズは、第2レンズ群L2、第3レンズ群L3、第4レンズ群L4の各々のレンズ間隔を変化させながら光軸上を移動することで、ズームとズームに伴う像面変動の補正を行っている。これら3つのレンズ群(第2レンズ群L2、第3レンズ群L3、第4レンズ群L4)でズーム系(変倍系)を構成している。 The first lens group L1 includes a focus lens group L12 and a fixed lens group L11 that does not move for focusing. The focus lens unit L12 moves toward the object side when focusing from an infinitely distant object to a short-distance object. The zoom lens of the present embodiment moves on the optical axis while changing the lens spacing of each of the second lens unit L2, the third lens unit L3, and the fourth lens unit L4, so that the zoom and the image plane associated with the zoom are changed. The fluctuation is corrected. These three lens groups (second lens group L2, third lens group L3, and fourth lens group L4) constitute a zoom system (variable magnification system).

図1に、本発明の実施例1(数値実施例1)のズームレンズの広角端で無限遠物体に合焦しているときのレンズ断面図を示す。レンズ断面図においては、第4レンズ群L4の像側に、物体側から順に、絞り(開口絞り)SP、ガラスブロックPとして示された色分解プリズムや光学フィルタ等、撮像面Iを示す。撮像面Iは、ズームレンズで形成された像を受光し、光電変換する固体撮像素子(光電変換素子)等の撮像面に相当する。また、第3レンズ群内に第3レンズ群と一体で移動するフレアカット絞りFCを配することで、広角端からズーム中間での不要光を切っている。これは他の実施例についても同様である。 FIG. 1 shows a lens cross-sectional view of a zoom lens of Embodiment 1 (Numerical Embodiment 1) of the present invention when an object at infinity is focused at the wide-angle end. In the lens cross-sectional view, on the image side of the fourth lens unit L4, in order from the object side, a stop (aperture stop) SP, a color separation prism shown as a glass block P, an optical filter, and the like, and an image pickup surface I are shown. The image pickup surface I corresponds to an image pickup surface such as a solid-state image pickup element (photoelectric conversion element) that receives and photoelectrically converts an image formed by a zoom lens. Further, by disposing a flare cut diaphragm FC that moves integrally with the third lens group in the third lens group, unnecessary light is cut off from the wide-angle end to the middle of the zoom. This also applies to the other embodiments.

実施例1のズームレンズにおいて、第1レンズ群L1は第1レンズ面〜第12レンズ面に対応する。第2レンズ群L2は第13レンズ面〜第19レンズ面に対応する。第3レンズ群L3は第20レンズ面〜第26レンズ面に対応する。第4レンズ群L4は第27レンズ面〜第31レンズ面に対応する。第5レンズ群L5は第32レンズ面〜第53レンズ面に対応する。LA群は第33面〜第38面に対応し、LB群は第39面〜第53面に対応する。負レンズAnは第33面と第34面で構成され、正レンズApは第35面と第36で構成され、正レンズBpは第47面と第48で構成される。 In the zoom lens of Embodiment 1, the first lens unit L1 corresponds to the first lens surface to the twelfth lens surface. The second lens unit L2 corresponds to the thirteenth lens surface to the nineteenth lens surface. The third lens unit L3 corresponds to the 20th lens surface to the 26th lens surface. The fourth lens unit L4 corresponds to the 27th lens surface to the 31st lens surface. The fifth lens unit L5 corresponds to the 32nd lens surface to the 53rd lens surface. The LA group corresponds to the 33rd to 38th surfaces, and the LB group corresponds to the 39th to 53rd surfaces. The negative lens An is composed of the 33rd surface and the 34th surface, the positive lens Ap is composed of the 35th surface and the 36th surface, and the positive lens Bp is composed of the 47th surface and the 48th surface.

また、第33面〜第38面は防振のために光軸と垂直方向に成分を有する移動量をもって像の安定化のために移動可能である。さらに、第39面〜第43面がエクステンダ挿入時に光軸外へ退避し、第39Ex面〜第48Ex面が挿入されることで、全系の焦点距離を長焦点距離側へ変位させることが可能である。
第13レンズ面、第22レンズ面、第31レンズ面は非球面形状である。
Further, the 33rd to 38th surfaces can be moved for stabilizing an image with a moving amount having a component in a direction perpendicular to the optical axis for vibration isolation. Furthermore, the 39th surface to the 43rd surface are retracted outside the optical axis when the extender is inserted, and the 39th Ex surface to the 48th Ex surface are inserted, so that the focal length of the entire system can be displaced to the long focal length side. Is.
The 13th lens surface, the 22nd lens surface, and the 31st lens surface have an aspherical shape.

図2は数値実施例1の、無限遠合焦時の広角端(a)、f=118.64mm(b)、望遠端(c)、エクステンダ挿入時の広角端(d)の縦収差図である。また、図3は数値実施例1で無限遠合焦時の望遠端(a)、望遠端(b)で防振レンズ群が0.7mm光軸に対してシフトした際の横収差図である。 FIG. 2 is a longitudinal aberration diagram of Numerical Example 1 at the wide-angle end (a) when focused on infinity, f=118.64 mm (b), the telephoto end (c), and the wide-angle end (d) when the extender is inserted. is there. Further, FIG. 3 is a lateral aberration diagram when the image stabilizing lens group shifts with respect to the optical axis by 0.7 mm at the telephoto end (a) and the telephoto end (b) when focusing on infinity in the numerical value example 1. ..

但し、焦点距離は数値実施例の値をmm単位で表したときの値である。これは以下の各実施例において全て同じである。各収差図において、球面収差における直線と二点鎖線と一点鎖線と点線は各々e線、g線、C線、F線である。非点収差における点線と実線は各々メリディオナル像面,サジタル像面であり、倍率色収差における二点鎖線と一点鎖線と点線は各々g線、C線、F線である。ωは半画角、FnoはFナンバーである。縦収差図では、球面収差は0.2mm、非点収差は0.2mm、歪曲は5%、倍率色収差は0.05mmのスケールで描かれている。なお、以下の各実施例において広角端と望遠端は、変倍用の第2レンズ群L2が機構に対して光軸上を移動可能な範囲の両端に位置したときのズーム位置を指す。 However, the focal length is a value when the value in the numerical example is expressed in mm. This is the same in each of the following examples. In each aberration diagram, the straight line, the two-dot chain line, the one-dot chain line, and the dotted line in the spherical aberration are the e-line, g-line, C-line, and F-line, respectively. The dotted line and the solid line in the astigmatism are the meridional image plane and the sagittal image plane, respectively, and the two-dot chain line, the one-dot chain line and the dotted line in the lateral chromatic aberration are the g-line, the C-line, and the F-line, respectively. ω is a half angle of view, and Fno is an F number. In the longitudinal aberration diagram, spherical aberration is 0.2 mm, astigmatism is 0.2 mm, distortion is 5%, and lateral chromatic aberration is 0.05 mm. In each of the following embodiments, the wide-angle end and the telephoto end refer to zoom positions when the second lens unit L2 for zooming is located at both ends of a range in which the second lens unit L2 for zooming can move on the optical axis with respect to the mechanism.

表3は数値実施例1の無限遠合焦時の広角端において、温度が1℃変化した際のピント変化量を示している。また、表4はエクステンダ挿入時の無限遠合焦時の広角端において温度が1℃変化した際のピント変化量を示している。 Table 3 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when focusing on infinity in Numerical Example 1. Table 4 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when the extender is in focus at infinity.

以下に実施例1に対する数値データを数値実施例1として示す。数値実施例において、
iは物体側からの面の順序を示し、riは物体側より第i番目の面の曲率半径、diは物体側より第i番目と第i+1番目の間隔、ndi,νdiは第i番目の面と第i+1番目の面との間の光学部材の屈折率とアッベ数である。非球面は面番号の横に*印を付けている。最後の3つの面はフィルタ等のガラスブロックである。
Numerical data for Example 1 are shown below as Numerical Example 1. In the numerical example,
i is the order of the surfaces from the object side, ri is the radius of curvature of the i-th surface from the object side, di is the i-th and (i+1)th distance from the object side, and ndi and νdi are the i-th surfaces. And the Abbe number of the optical member between the (i+1)th surface. Aspherical surfaces are marked with * next to the surface number. The last three faces are glass blocks such as filters.

非球面形状は光軸方向にX軸、光軸と垂直方向にH軸、光の進行方向を正とし、Rを近軸曲率半径、kを円錐常数、A4、A5、A6、A7、A8、A9、A10、A11、A12、A13、A14、A15、A16をそれぞれ非球面係数としたとき、次式で表している。また、「e−Z」は「×10−Z」を意味する。なお、以下の数値実施例においても同様の記載をする。

Figure 2020085935
The aspherical shape has an X axis in the optical axis direction, an H axis in the direction perpendicular to the optical axis, a positive light traveling direction, R is a paraxial radius of curvature, k is a conical constant, A4, A5, A6, A7, A8, When A9, A10, A11, A12, A13, A14, A15, and A16 are aspherical coefficients, they are represented by the following equations. Moreover, "e-Z" means " x10 -Z." Note that the same description is made in the following numerical examples.
Figure 2020085935

本実施例の各条件式対応値を表10に示す。本実施例は(1)〜(11)式を満足しており、広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正されたズームレンズを達成している。本発明のズームレンズは、(1)〜(4)式を満足することは必須であるが、(5)〜(11)式については満足していなくても構わない。但し、(5)〜(11)式について少なくとも1つでも満足していれば更に良い効果を奏することができる。これは他の実施例についても同様である。 Table 10 shows the values corresponding to the respective conditional expressions of the present embodiment. The present embodiment satisfies the expressions (1) to (11), and the zoom in which the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range are well corrected while suppressing the focus shift due to the temperature change on the wide angle side. Has achieved the lens. It is essential for the zoom lens of the present invention to satisfy the expressions (1) to (4), but the expressions (5) to (11) may not be satisfied. However, if at least one of the expressions (5) to (11) is satisfied, a better effect can be obtained. This also applies to the other embodiments.

図14は各実施例のズームレンズを撮影光学系として用いた撮像装置(テレビカメラシステム)の概略図である。図14において101は実施例1〜5のいずれかのズームレンズである。124はカメラである。ズームレンズ101はカメラ124に対して着脱可能となっている。125はカメラ124にズームレンズ101を装着することで構成される撮像装置である。ズームレンズ101は第1レンズ群F、変倍部LZ、結像用の後群Rを有している。第1レンズ群Fは合焦用レンズ群が含まれている。変倍部LZは変倍のために光軸上を移動する第2レンズ群、第3レンズ群、変倍に伴う像面変動を補正するために光軸上を移動する第4レンズ群が含まれている。SPは開口絞りである。114、115は各々第1レンズ群F、変倍部LZを光軸方向に駆動するヘリコイドやカム等の駆動機構である。116〜118は駆動機構114、115および開口絞りSPを電動駆動するモータ(駆動手段)である。119〜121は、第1レンズ群Fや変倍部LZの光軸上の位置や、開口絞りSPの絞り径を検出するためのエンコーダやポテンショメータ、あるいはフォトセンサ等の検出器である。カメラ124において、109はカメラ124内の光学フィルタや色分解光学系に相当するガラスブロック、110はズームレンズ101によって形成された被写体像を受光するCCDセンサやCMOSセンサ等の固体撮像素子(光電変換素子)である。また、111、122はカメラ124及びズームレンズ101の各種の駆動を制御するCPUである。 FIG. 14 is a schematic diagram of an image pickup apparatus (television camera system) using the zoom lens of each example as a photographing optical system. In FIG. 14, reference numeral 101 denotes the zoom lens according to any one of Embodiments 1 to 5. Reference numeral 124 is a camera. The zoom lens 101 is attachable to and detachable from the camera 124. Reference numeral 125 denotes an image pickup apparatus configured by mounting the zoom lens 101 on the camera 124. The zoom lens 101 has a first lens group F, a variable power portion LZ, and a rear group R for image formation. The first lens group F includes a focusing lens group. The variable power unit LZ includes a second lens group that moves on the optical axis for zooming, a third lens group, and a fourth lens group that moves on the optical axis to correct image plane variation due to zooming. Has been. SP is an aperture stop. Reference numerals 114 and 115 denote driving mechanisms such as a helicoid and a cam for driving the first lens group F and the variable power portion LZ in the optical axis direction. Reference numerals 116 to 118 denote motors (driving means) that electrically drive the driving mechanisms 114 and 115 and the aperture stop SP. Reference numerals 119 to 121 are encoders, potentiometers, photosensors, or other detectors for detecting the positions of the first lens group F and the variable power portion LZ on the optical axis, and the aperture diameter of the aperture stop SP. In the camera 124, 109 is a glass block corresponding to an optical filter or color separation optical system in the camera 124, 110 is a solid-state image sensor (photoelectric conversion device) such as a CCD sensor or a CMOS sensor that receives a subject image formed by the zoom lens 101. Element). Reference numerals 111 and 122 denote CPUs that control various drives of the camera 124 and the zoom lens 101.

このように、本発明のズームレンズをテレビカメラに適用することにより、高い光学性能を有する撮像装置を実現している。 Thus, by applying the zoom lens of the present invention to a television camera, an image pickup apparatus having high optical performance is realized.

本発明の実施例2のズームレンズは、物体側から順に、変倍のためには不動の正の屈折力の第1レンズ群L1、変倍に際して移動する負の屈折力の第2レンズ群L2、変倍に際して移動する正の屈折力の第3レンズ群L3、変倍に際して移動する正の屈折力の第4レンズ群L4、変倍のためには不動の結像作用を有する正の屈折力の第5レンズ群L5から構成される。各レンズ断面図において、左方が被写体(物体)側(前方)で右方が像側(後方)を示す。 A zoom lens according to a second exemplary embodiment of the present invention includes, in order from the object side, a first lens unit L1 having a positive refractive power that is immovable for zooming, and a second lens unit L2 having a negative refractive power that moves during zooming. A third lens unit L3 having a positive refractive power that moves during zooming, a fourth lens unit L4 that has a positive refractive power that moves during zooming, and a positive refractive power having an immovable image-forming action for zooming. The fifth lens unit L5. In each lens cross-sectional view, the left side indicates the subject (object) side (front side) and the right side indicates the image side (rear side).

第1レンズ群L1は、フォーカスレンズ群L12、フォーカスのためには不動の固定レンズ群L11を含む。フォーカスレンズ群L12は、無限遠物体から近距離物体へのフォーカスに際して物体側へ移動する。本実施例のズームレンズは、第2レンズ群L2、第3レンズ群L3、第4レンズ群L4の各々のレンズ間隔を変化させながら光軸上を移動することで、ズームとズームに伴う像面変動の補正を行っている。これら3つのレンズ群(第2レンズ群L2、第3レンズ群L3、第4レンズ群L4)でズーム系(変倍群)を構成している。 The first lens group L1 includes a focus lens group L12 and a fixed lens group L11 that does not move for focusing. The focus lens unit L12 moves toward the object side when focusing from an infinitely distant object to a short-distance object. The zoom lens of the present embodiment moves on the optical axis while changing the lens spacing of each of the second lens unit L2, the third lens unit L3, and the fourth lens unit L4, so that the zoom and the image plane associated with the zoom are changed. The fluctuation is corrected. These three lens groups (second lens group L2, third lens group L3, and fourth lens group L4) form a zoom system (magnifying power group).

図4に、本発明の実施例2(数値実施例2)のズームレンズの広角端で無限遠物体に合焦しているときのレンズ断面図を示す。 FIG. 4 shows a lens cross-sectional view of a zoom lens of Embodiment 2 (Numerical Embodiment 2) of the present invention when focusing on an object at infinity at the wide-angle end.

実施例2のズームレンズにおいて、第1レンズ群L1は第1レンズ面〜第12レンズ面に対応する。第2レンズ群L2は第13レンズ面〜第19レンズ面に対応する。第3レンズ群L3は第20レンズ面〜第25レンズ面に対応する。第4レンズ群L4は第26レンズ面〜第30レンズ面に対応する。第5レンズ群L5は第31レンズ面〜第53レンズ面に対応する。LA群は第32面〜第37面に対応し、LB群は第38面〜第53面に対応する。負レンズAnは第32面と第33面で構成され、正レンズApは第34面と第35で構成され、正レンズBpは第47面と第48で構成される。
第13レンズ面、第21レンズ面、第30レンズ面は非球面形状である。
In the zoom lens of Example 2, the first lens unit L1 corresponds to the first lens surface to the twelfth lens surface. The second lens unit L2 corresponds to the thirteenth lens surface to the nineteenth lens surface. The third lens unit L3 corresponds to the 20th to 25th lens surfaces. The fourth lens unit L4 corresponds to the 26th lens surface to the 30th lens surface. The fifth lens unit L5 corresponds to the 31st lens surface to the 53rd lens surface. The LA group corresponds to the 32nd to 37th surfaces, and the LB group corresponds to the 38th to 53rd surfaces. The negative lens An is composed of the 32nd surface and the 33rd surface, the positive lens Ap is composed of the 34th surface and the 35th surface, and the positive lens Bp is composed of the 47th surface and the 48th surface.
The thirteenth lens surface, the twenty-first lens surface, and the thirtieth lens surface have an aspherical shape.

図5は数値実施例2の、無限遠合焦時の広角端(a)、f=70.52mm(b)、望遠端(c)の縦収差図である。
縦収差図では、球面収差は0.2mm、非点収差は0.2mm、歪曲は5%、倍率色収差は0.05mmのスケールで描かれている。
FIG. 5 is a longitudinal aberration diagram of Numerical Example 2 at the wide-angle end (a), f=70.52 mm (b), and the telephoto end (c) when focused on infinity.
In the longitudinal aberration diagram, spherical aberration is 0.2 mm, astigmatism is 0.2 mm, distortion is 5%, and lateral chromatic aberration is 0.05 mm.

表5は数値実施例2の無限遠合焦時の広角端において、温度が1℃変化した際のピント変化量を示している。 Table 5 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when focusing on infinity in Numerical Example 2.

本実施例の各条件式対応値を表10に示す。本実施例は(1)〜(11)式を満足しており、広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正されたズームレンズを達成している。 Table 10 shows the values corresponding to the respective conditional expressions of the present embodiment. This embodiment satisfies the expressions (1) to (11), and the zoom in which the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range are well corrected while suppressing the focus shift due to the temperature change on the wide angle side. Has achieved the lens.

本発明の実施例3のズームレンズは、物体側から順に、変倍のためには不動の正の屈折力の第1レンズ群L1、変倍に際して移動する負の屈折力の第2レンズ群L2、変倍に際して移動する正の屈折力の第3レンズ群L3、変倍に際して移動する正の屈折力の第4レンズ群L4、変倍のためには不動の結像作用を有する正の屈折力の第5レンズ群L5から構成される。各レンズ断面図において、左方が被写体(物体)側(前方)で右方が像側(後方)を示す。 The zoom lens according to the third exemplary embodiment of the present invention includes, in order from the object side, a first lens unit L1 having a positive refractive power that does not move for zooming, and a second lens unit L2 having a negative refractive power that moves during zooming. A third lens unit L3 having a positive refractive power that moves during zooming, a fourth lens unit L4 that has a positive refractive power that moves during zooming, and a positive refractive power having an immovable image-forming action for zooming. The fifth lens unit L5. In each lens cross-sectional view, the left side indicates the subject (object) side (front side) and the right side indicates the image side (rear side).

第1レンズ群L1は、フォーカスレンズ群L12、フォーカスのためには不動の固定レンズ群L11、L13を含む。フォーカスレンズ群L12は、無限遠物体から近距離物体へのフォーカスに際して像側へ移動する。本実施例のズームレンズは、第2レンズ群L2、第3レンズ群L3、第4レンズ群L4の各々のレンズ間隔を変化させながら光軸上を移動することで、ズームとズームに伴う像面変動の補正を行っている。これら3つのレンズ群(第2レンズ群L2、第3レンズ群L3、第4レンズ群L4)でズーム系(変倍群)を構成している。 The first lens group L1 includes a focus lens group L12 and fixed lens groups L11 and L13 that do not move for focusing. The focus lens unit L12 moves toward the image side when focusing from an object at infinity to a near object. The zoom lens of the present embodiment moves on the optical axis while changing the lens spacing of each of the second lens unit L2, the third lens unit L3, and the fourth lens unit L4, so that the zoom and the image plane associated with the zoom are changed. The fluctuation is corrected. These three lens groups (second lens group L2, third lens group L3, and fourth lens group L4) form a zoom system (magnifying power group).

図6に、本発明の実施例3(数値実施例3)のズームレンズの広角端で無限遠物体に合焦しているときのレンズ断面図を示す。 FIG. 6 is a lens cross-sectional view of the zoom lens of Embodiment 3 (Numerical Embodiment 3) of the present invention when focusing on an object at infinity at the wide-angle end.

実施例3のズームレンズにおいて、第1レンズ群L1は第1レンズ面〜第19レンズ面に対応する。第2レンズ群L2は第20レンズ面〜第26レンズ面に対応する。第3レンズ群L3は第27レンズ面〜第34レンズ面に対応する。第4レンズ群L4は第35レンズ面〜第38レンズ面に対応する。第5レンズ群L5は第39レンズ面〜第60レンズ面に対応する。LA群は第40面〜第44面に対応し、LB群は第45面〜第60面に対応する。負レンズAnは第40面と第41面で構成され、正レンズApは第42面と第43で構成され、正レンズBpは第54面と第55で構成される。
第20レンズ面、第29レンズ面、第37レンズ面は非球面形状である。
In the zoom lens of Example 3, the first lens unit L1 corresponds to the first lens surface to the nineteenth lens surface. The second lens unit L2 corresponds to the 20th lens surface to the 26th lens surface. The third lens unit L3 corresponds to the 27th lens surface to the 34th lens surface. The fourth lens unit L4 corresponds to the 35th lens surface to the 38th lens surface. The fifth lens unit L5 corresponds to the 39th lens surface to the 60th lens surface. The LA group corresponds to the 40th to 44th surfaces, and the LB group corresponds to the 45th to 60th surfaces. The negative lens An is composed of the 40th surface and the 41st surface, the positive lens Ap is composed of the 42nd surface and the 43rd surface, and the positive lens Bp is composed of the 54th surface and the 55th surface.
The 20th lens surface, the 29th lens surface, and the 37th lens surface have an aspherical shape.

図7は数値実施例3の、無限遠合焦時の広角端(a)、f=99.40mm(b)、望遠端(c)の縦収差図である。
縦収差図では、球面収差は0.2mm、非点収差は0.2mm、歪曲は5%、倍率色収差は0.05mmのスケールで描かれている。
FIG. 7 is a longitudinal aberration diagram of Numerical Example 3 at the wide-angle end (a), f=99.40 mm (b), and the telephoto end (c) when focused on infinity.
In the longitudinal aberration diagram, spherical aberration is 0.2 mm, astigmatism is 0.2 mm, distortion is 5%, and lateral chromatic aberration is 0.05 mm.

表6は数値実施例3の無限遠合焦時の広角端において、温度が1℃変化した際のピント変化量を示している。
本実施例の各条件式対応値を表10に示す。本実施例は(1)〜(11)式を満足しており、広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正されたズームレンズを達成している。
Table 6 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when focusing on infinity in Numerical Example 3.
Table 10 shows the values corresponding to the respective conditional expressions of the present embodiment. The present embodiment satisfies the expressions (1) to (11), and the zoom in which the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range are well corrected while suppressing the focus shift due to the temperature change on the wide angle side. Has achieved the lens.

本発明の実施例4のズームレンズは、物体側から順に、変倍のためには不動の正の屈折力の第1レンズ群L1、変倍に際して移動する負の屈折力の第2レンズ群L2、変倍に際して移動する正の屈折力の第3レンズ群L3、変倍に際して移動する正の屈折力の第4レンズ群L4、変倍のためには不動の結像作用を有する正の屈折力の第5レンズ群L5から構成される。各レンズ断面図において、左方が被写体(物体)側(前方)で右方が像側(後方)を示す。 The zoom lens according to Example 4 of the present invention includes, in order from the object side, a first lens unit L1 having a positive refractive power that is immovable for zooming, and a second lens unit L2 having a negative refractive power that moves during zooming. A third lens unit L3 having a positive refractive power that moves during zooming, a fourth lens unit L4 that has a positive refractive power that moves during zooming, and a positive refractive power having an immovable image-forming action for zooming. The fifth lens unit L5. In each lens cross-sectional view, the left side indicates the subject (object) side (front side) and the right side indicates the image side (rear side).

第1レンズ群L1は、フォーカスレンズ群L12、フォーカスのためには不動の固定レンズ群L11、L13を含む。フォーカスレンズ群L12は、無限遠物体から近距離物体へのフォーカスに際して像側へ移動する。本実施例のズームレンズは、第2レンズ群L2、第3レンズ群L3、第4レンズ群L4の各々のレンズ間隔を変化させながら光軸上を移動することで、ズームとズームに伴う像面変動の補正を行っている。これら3つのレンズ群(第2レンズ群L2、第3レンズ群L3、第4レンズ群L4)でズーム系(変倍群)を構成している。 The first lens group L1 includes a focus lens group L12 and fixed lens groups L11 and L13 that do not move for focusing. The focus lens unit L12 moves toward the image side when focusing from an object at infinity to a near object. The zoom lens of the present embodiment moves on the optical axis while changing the lens spacing of each of the second lens unit L2, the third lens unit L3, and the fourth lens unit L4, so that the zoom and the image plane associated with the zoom are changed. The fluctuation is corrected. These three lens groups (second lens group L2, third lens group L3, and fourth lens group L4) form a zoom system (magnifying power group).

図8に、本発明の実施例4(数値実施例4)のズームレンズの広角端で無限遠物体に合焦しているときのレンズ断面図を示す。 FIG. 8 is a lens cross-sectional view of the zoom lens of Embodiment 4 (Numerical Embodiment 4) of the present invention when focusing on an object at infinity at the wide-angle end.

実施例4のズームレンズにおいて、第1レンズ群L1は第1レンズ面〜第19レンズ面に対応する。第2レンズ群L2は第20レンズ面〜第26レンズ面に対応する。第3レンズ群L3は第27レンズ面〜第33レンズ面に対応する。第4レンズ群L4は第34レンズ面〜第37レンズ面に対応する。第5レンズ群L5は第38レンズ面〜第59レンズ面に対応する。LA群は第39面〜第43面に対応し、LB群は第44面〜第59面に対応する。負レンズAnは第39面と第40面で構成され、正レンズApは第41面と第42で構成され、正レンズBpは第53面と第54で構成される。
第20レンズ面、第28レンズ面、第36レンズ面は非球面形状である。
In the zoom lens of Example 4, the first lens unit L1 corresponds to the first lens surface to the nineteenth lens surface. The second lens unit L2 corresponds to the 20th lens surface to the 26th lens surface. The third lens unit L3 corresponds to the 27th lens surface to the 33rd lens surface. The fourth lens unit L4 corresponds to the 34th lens surface to the 37th lens surface. The fifth lens unit L5 corresponds to the 38th lens surface to the 59th lens surface. The LA group corresponds to the 39th to 43rd surfaces, and the LB group corresponds to the 44th to 59th surfaces. The negative lens An is composed of the 39th surface and the 40th surface, the positive lens Ap is composed of the 41st surface and the 42nd surface, and the positive lens Bp is composed of the 53rd surface and the 54th surface.
The 20th lens surface, the 28th lens surface, and the 36th lens surface have an aspherical shape.

図9は数値実施例4の、無限遠合焦時の広角端(a)、f=66.57mm(b)、望遠端(c)の縦収差図である。
縦収差図では、球面収差は0.2mm、非点収差は0.2mm、歪曲は5%、倍率色収差は0.05mmのスケールで描かれている。
FIG. 9 is a longitudinal aberration diagram of Numerical Example 4 at the wide-angle end (a), f=66.57 mm (b), and the telephoto end (c) when focused on an object at infinity.
In the longitudinal aberration diagram, spherical aberration is 0.2 mm, astigmatism is 0.2 mm, distortion is 5%, and lateral chromatic aberration is 0.05 mm.

表7は数値実施例4の無限遠合焦時の広角端において、温度が1℃変化した際のピント変化量を示している。
本実施例の各条件式対応値を表10に示す。本実施例は(1)〜(11)式を満足しており、広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正されたズームレンズを達成している。
Table 7 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when focusing on infinity in Numerical Example 4.
Table 10 shows the values corresponding to the respective conditional expressions of the present embodiment. The present embodiment satisfies the expressions (1) to (11), and the zoom in which the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range are well corrected while suppressing the focus shift due to the temperature change on the wide angle side. Has achieved the lens.

本発明の実施例5のズームレンズは、物体側から順に、変倍のためには不動の正の屈折力の第1レンズ群L1、変倍に際して移動する負の屈折力の第2レンズ群L2、変倍に際して移動する正の屈折力の第3レンズ群L3、変倍に際して移動する正の屈折力の第4レンズ群L4、変倍のためには不動の結像作用を有する正の屈折力の第5レンズ群L5から構成される。各レンズ断面図において、左方が被写体(物体)側(前方)で右方が像側(後方)を示す。 The zoom lens according to Example 5 of the present invention includes, in order from the object side, a first lens unit L1 having a positive refractive power that is immovable for zooming, and a second lens unit L2 having a negative refractive power that moves during zooming. A third lens unit L3 having a positive refractive power that moves during zooming, a fourth lens unit L4 that has a positive refractive power that moves during zooming, and a positive refractive power having an immovable image-forming action for zooming. The fifth lens unit L5. In each lens cross-sectional view, the left side indicates the subject (object) side (front side) and the right side indicates the image side (rear side).

第1レンズ群L1は、フォーカスレンズ群L12、フォーカスのためには不動の固定レンズ群L11を含む。フォーカスレンズ群L12は、無限遠物体から近距離物体へのフォーカスに際して物体側へ移動する。本実施例のズームレンズは、第2レンズ群L2、第3レンズ群L3、第4レンズ群L4の各々のレンズ間隔を変化させながら光軸上を移動することで、ズームとズームに伴う像面変動の補正を行っている。これら3つのレンズ群(第2レンズ群L2、第3レンズ群L3、第4レンズ群L4)でズーム系(変倍群)を構成している。 The first lens group L1 includes a focus lens group L12 and a fixed lens group L11 that does not move for focusing. The focus lens unit L12 moves toward the object side when focusing from an infinitely distant object to a short-distance object. The zoom lens of the present embodiment moves on the optical axis while changing the lens spacing of each of the second lens unit L2, the third lens unit L3, and the fourth lens unit L4, so that the zoom and the image plane associated with the zoom are changed. The fluctuation is corrected. These three lens groups (second lens group L2, third lens group L3, and fourth lens group L4) form a zoom system (magnifying power group).

図10に、本発明の実施例5(数値実施例5)のズームレンズの広角端で無限遠物体に合焦しているときのレンズ断面図を示す。 FIG. 10 is a lens cross-sectional view of the zoom lens of Embodiment 5 (Numerical Embodiment 5) of the present invention when focusing on an object at infinity at the wide-angle end.

実施例5のズームレンズにおいて、第1レンズ群L1は第1レンズ面〜第12レンズ面に対応する。第2レンズ群L2は第13レンズ面〜第19レンズ面に対応する。第3レンズ群L3は第20レンズ面〜第26レンズ面に対応する。第4レンズ群L4は第27レンズ面〜第31レンズ面に対応する。第5レンズ群L5は第32レンズ面〜第53レンズ面に対応する。LA群は第33面〜第38面に対応し、LB群は第39面〜第53面に対応する。負レンズAnは第33面と第34面で構成され、正レンズApは第35面と第36で構成され、正レンズBpは第47面と第48で構成される。
第13レンズ面、第22レンズ面、第31レンズ面は非球面形状である。
In the zoom lens of Embodiment 5, the first lens unit L1 corresponds to the first lens surface to the twelfth lens surface. The second lens unit L2 corresponds to the thirteenth lens surface to the nineteenth lens surface. The third lens unit L3 corresponds to the 20th lens surface to the 26th lens surface. The fourth lens unit L4 corresponds to the 27th lens surface to the 31st lens surface. The fifth lens unit L5 corresponds to the 32nd lens surface to the 53rd lens surface. The LA group corresponds to the 33rd to 38th surfaces, and the LB group corresponds to the 39th to 53rd surfaces. The negative lens An is composed of the 33rd surface and the 34th surface, the positive lens Ap is composed of the 35th surface and the 36th surface, and the positive lens Bp is composed of the 47th surface and the 48th surface.
The 13th lens surface, the 22nd lens surface, and the 31st lens surface have an aspherical shape.

図11は数値実施例5の、無限遠合焦時の広角端(a)、f=118.64mm(b)、望遠端(c)の縦収差図である。
縦収差図では、球面収差は0.4mm、非点収差は0.4mm、歪曲は5%、倍率色収差は0.1mmのスケールで描かれている。
FIG. 11 is a longitudinal aberration diagram of Numerical Example 5 at the wide-angle end (a), f=118.64 mm (b), and the telephoto end (c) when focused on infinity.
In the longitudinal aberration diagram, the spherical aberration is 0.4 mm, the astigmatism is 0.4 mm, the distortion is 5%, and the lateral chromatic aberration is drawn on a scale of 0.1 mm.

表8は数値実施例5の無限遠合焦時の広角端において、温度が1℃変化した際のピント変化量を示している。
本実施例の各条件式対応値を表10に示す。本実施例は(1)〜(11)式を満足しており、広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正されたズームレンズを達成している。
Table 8 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when focusing on infinity in Numerical Example 5.
Table 10 shows the values corresponding to the respective conditional expressions of the present embodiment. The present embodiment satisfies the expressions (1) to (11), and the zoom in which the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range are well corrected while suppressing the focus shift due to the temperature change on the wide angle side. Has achieved the lens.

本発明の実施例6のズームレンズは、物体側から順に、変倍のためには不動の正の屈折力の第1レンズ群L1、変倍に際して移動する負の屈折力の第2レンズ群L2、変倍に際して移動する負の屈折力の第3レンズ群L3、変倍に際して移動する正の屈折力の第4レンズ群L4、変倍に際して移動する正の屈折力の第5レンズ群L5、変倍のためには不動の結像作用を有する正の屈折力の第6レンズ群L6から構成される。各レンズ断面図において、左方が被写体(物体)側(前方)で右方が像側(後方)を示す。 The zoom lens according to Example 6 of the present invention includes, in order from the object side, a first lens unit L1 having a positive refractive power that is immovable for zooming, and a second lens unit L2 having a negative refractive power that moves during zooming. A third lens unit L3 having a negative refractive power which moves during zooming, a fourth lens unit L4 having a positive refractive power which moves during zooming, a fifth lens unit L5 having a positive refractive power which moves during zooming, For the purpose of doubling, it is composed of a sixth lens unit L6 having a positive refractive power and having an immovable image forming action. In each lens cross-sectional view, the left side indicates the subject (object) side (front side) and the right side indicates the image side (rear side).

第1レンズ群L1は、フォーカスレンズ群L12、フォーカスのためには不動の固定レンズ群L11を含む。フォーカスレンズ群L12は、無限遠物体から近距離物体へのフォーカスに際して物体側へ移動する。本実施例のズームレンズは、第2レンズ群L2、第3レンズ群L3、第4レンズ群L4、第5レンズ群L5の各々のレンズ間隔を変化させながら光軸上を移動することで、ズームとズームに伴う像面変動の補正を行っている。これら4つのレンズ群(第2レンズ群L2、第3レンズ群L3、第4レンズ群L4、第5レンズ群L5)でズーム系(変倍群)を構成している。 The first lens group L1 includes a focus lens group L12 and a fixed lens group L11 that does not move for focusing. The focus lens unit L12 moves toward the object side when focusing from an infinitely distant object to a short-distance object. The zoom lens of the present embodiment moves on the optical axis while changing the lens spacing of each of the second lens group L2, the third lens group L3, the fourth lens group L4, and the fifth lens group L5, thereby zooming. And the image plane variation due to zooming is corrected. The four lens groups (second lens group L2, third lens group L3, fourth lens group L4, and fifth lens group L5) constitute a zoom system (magnifying power group).

図12に、本発明の実施例6(数値実施例6)のズームレンズの広角端で無限遠物体に合焦しているときのレンズ断面図を示す。 FIG. 12 shows a lens cross-sectional view of a zoom lens of Embodiment 6 (Numerical Embodiment 6) of the present invention when focusing on an object at infinity at the wide-angle end.

実施例6のズームレンズにおいて、第1レンズ群L1は第1レンズ面〜第10レンズ面に対応する。第2レンズ群L2は第11レンズ面〜第15レンズ面に対応する。第3レンズ群L3は第16レンズ面〜第17レンズ面に対応する。第4レンズ群L4は第18レンズ面〜第23レンズ面に対応する。第5レンズ群L5は第24レンズ面〜第28レンズ面に対応する。第6レンズ群L6は第30レンズ面〜第51レンズ面に対応する。LA群は第30面〜第35面に対応し、LB群は第36面〜第51面に対応する。負レンズAnは第30面と第31面で構成され、正レンズApは第32面と第33で構成され、正レンズBpは第45面と第46で構成される。
第11レンズ面、第17レンズ面、第19レンズ面、第27レンズ面は非球面形状である。
In the zoom lens of Example 6, the first lens unit L1 corresponds to the first lens surface to the tenth lens surface. The second lens unit L2 corresponds to the eleventh lens surface to the fifteenth lens surface. The third lens unit L3 corresponds to the 16th lens surface to the 17th lens surface. The fourth lens unit L4 corresponds to the 18th lens surface to the 23rd lens surface. The fifth lens unit L5 corresponds to the 24th lens surface to the 28th lens surface. The sixth lens unit L6 corresponds to the 30th lens surface to the 51st lens surface. The LA group corresponds to the 30th to 35th surfaces, and the LB group corresponds to the 36th to 51st surfaces. The negative lens An is composed of the 30th surface and the 31st surface, the positive lens Ap is composed of the 32nd surface and the 33rd surface, and the positive lens Bp is composed of the 45th surface and the 46th surface.
The eleventh lens surface, the seventeenth lens surface, the nineteenth lens surface, and the twenty-seventh lens surface have an aspherical shape.

図13は数値実施例6の、無限遠合焦時の広角端(a)、f=100.00mm(b)、望遠端(c)の縦収差図である。
縦収差図では、球面収差は0.2mm、非点収差は0.2mm、歪曲は5%、倍率色収差は0.05mmのスケールで描かれている。
FIG. 13 is a longitudinal aberration diagram for Numerical Example 6 at the wide-angle end (a), f=100.00 mm (b), and the telephoto end (c) when focused on infinity.
In the longitudinal aberration diagram, spherical aberration is 0.2 mm, astigmatism is 0.2 mm, distortion is 5%, and lateral chromatic aberration is 0.05 mm.

表9は数値実施例6の無限遠合焦時の広角端において、温度が1℃変化した際のピント変化量を示している。
本実施例の各条件式対応値を表10に示す。本実施例は(1)〜(11)式を満足しており、広角側の温度変化によるピントずれを抑制しながらも、全ズーム域の軸上色収差及び、倍率色収差が良好に補正されたズームレンズを達成している。
Table 9 shows the amount of focus change when the temperature changes by 1° C. at the wide-angle end when focusing on infinity in Numerical Example 6.
Table 10 shows the values corresponding to the respective conditional expressions of the present embodiment. The present embodiment satisfies the expressions (1) to (11), and the zoom in which the axial chromatic aberration and the lateral chromatic aberration in the entire zoom range are well corrected while suppressing the focus shift due to the temperature change on the wide angle side. Has achieved the lens.

このように、本発明のズームレンズをテレビカメラに適用することにより、高い光学性能を有しながら、環境温度の変化に対するピントずれが高精度に補正された撮像装置を実現している。 As described above, by applying the zoom lens of the present invention to a television camera, an image pickup apparatus having high optical performance and highly accurately corrected focus deviation with respect to a change in environmental temperature is realized.

以上、本発明の好ましい実施形態について説明したが、本発明はこれらの実施形態に限定されず、その要旨の範囲内で種々の変形及び変更が可能である。
Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist thereof.

<数値実施例1>
単位 mm

面番号 r d nd vd θgF dn/dT
1 -2942.18811 6.00000 1.834810 42.74 0.5648 5.3
2 335.45859 1.80000
3 335.06633 23.70767 1.433870 95.10 0.5373 -10.1
4 -1057.92901 0.20000
5 525.29863 14.68252 1.433870 95.10 0.5373 -10.1
6 -2449.90453 25.25075
7 377.04224 20.53079 1.433870 95.10 0.5373 -10.1
8 -1365.49684 0.25000
9 306.95406 16.15620 1.433870 95.10 0.5373 -10.1
10 1716.23164 1.49946
11 188.24393 16.19337 1.438750 94.66 0.5340 6.2
12 408.07756 (可変)
13* -532.82374 2.20000 2.003300 28.27 0.5980 10.1
14 38.13165 11.72245
15 -44.54614 1.45000 1.743198 49.34 0.5531 6.6
16 72.56546 9.77415 1.892860 20.36 0.6393 1.9
17 -46.48441 1.62858
18 -41.75805 2.00000 1.882997 40.76 0.5667 5.2
19 -152.60813 (可変)
20 (フレアカット) 30.00000
21 152.33559 11.49260 1.729157 54.68 0.5444 4.1
22* -265.71450 6.61910
23 139.88768 13.50202 1.438750 94.66 0.5340 -6.2
24 -246.30392 0.49825
25 264.09410 2.60000 1.854780 24.80 0.6122 4.9
26 97.10593 (可変)
27 86.50601 15.38886 1.496999 81.54 0.5375 -6.1
28 -236.96933 0.50000
29 415.87662 2.50000 1.805181 25.42 0.6161 1.8
30 139.36202 7.84908 1.603112 60.64 0.5415 3.2
31* -764.20052 (可変)
32 (絞り) 4.83283
33 -137.48989 1.40000 1.717004 47.92 0.5605 0.1
34 46.21721 0.44374
35 33.66049 4.52269 1.854780 24.80 0.6122 4.9
36 98.88257 3.01799
37 -252.81608 1.40000 1.891900 37.13 0.5780 5.6
38 78.97573 20.12699
39 -19240.92792 4.33387 1.487490 70.23 0.5300 -0.7
40 -38.41948 1.18634
41 -53.79231 1.60000 1.882997 40.76 0.5667 5.2
42 19.83504 9.34390 1.639799 34.46 0.5922 2.8
43 -49.11662 17.12285
44 -127.14477 7.14294 1.516330 64.14 0.5353 2.8
45 -26.14091 1.02057
46 -84.74111 1.80000 2.001000 29.13 0.5997 5.0
47 19.84757 12.37254 1.808095 22.76 0.6307 0.4
48 -78.29937 0.19910
49 804.51016 8.60002 1.548141 45.79 0.5686 2.0
50 -22.37499 1.80000 1.854780 24.80 0.6122 4.9
51 -80.59245 11.61779
52 -58.20663 8.07646 1.487490 70.23 0.5300 -0.7
53 -27.77017 9.49978
54 ∞ 63.04000 1.608590 46.44 0.5664 2.0
55 ∞ 8.70000 1.516330 64.15 0.5352 3.0
56 ∞ 11.00000
像面

非球面データ
第13面
K = 1.99852e+000 A 4= 1.15677e-006 A 6=-2.75064e-008 A 8=-3.06848e-010 A10= 9.10515e-013 A12= 3.28486e-015 A14= 1.35261e-018 A16= 5.54400e-022
A 3= 2.74335e-007 A 5= 9.95673e-008 A 7= 4.02226e-009 A 9= 6.12079e-012 A11=-8.52506e-014 A13=-6.85632e-017 A15=-3.84859e-020

第22面
K = 1.21093e+001 A 4= 2.82183e-007 A 6=-5.59441e-011 A 8=-2.00796e-014 A10= 9.78964e-017 A12=-6.30815e-020 A14= 1.70834e-023 A16=-4.73901e-027
A 3=-2.90901e-008 A 5= 1.58196e-009 A 7= 1.10620e-012 A 9=-1.50730e-015 A11= 5.86871e-020 A13= 1.04584e-022 A15= 1.44467e-025

第31面
K =-2.23400e+002 A 4= 2.77687e-007 A 6= 4.69555e-010 A 8= 1.39733e-013 A10=-2.98156e-016 A12= 4.58582e-019 A14=-2.25443e-022 A16= 5.80568e-026
A 3= 1.70768e-007 A 5=-5.73181e-009 A 7=-1.36230e-011 A 9= 7.92918e-015 A11=-8.14405e-018 A13= 2.06016e-021 A15=-8.57551e-025
<Numerical Example 1>
Unit mm

Surface number rd nd vd θgF dn/dT
1 -2942.18811 6.00000 1.834810 42.74 0.5648 5.3
2 335.45859 1.80000
3 335.06633 23.70767 1.433870 95.10 0.5373 -10.1
4 -1057.92901 0.20000
5 525.29863 14.68252 1.433870 95.10 0.5373 -10.1
6 -2449.90453 25.25075
7 377.04224 20.53079 1.433870 95.10 0.5373 -10.1
8 -1365.49684 0.25000
9 306.95406 16.15620 1.433870 95.10 0.5373 -10.1
10 1716.23164 1.49946
11 188.24393 16.19337 1.438750 94.66 0.5340 6.2
12 408.07756 (variable)
13* -532.82374 2.20000 2.003300 28.27 0.5980 10.1
14 38.13165 11.72245
15 -44.54614 1.45000 1.743198 49.34 0.5531 6.6
16 72.56546 9.77415 1.892860 20.36 0.6393 1.9
17 -46.48441 1.62858
18 -41.75805 2.00000 1.882997 40.76 0.5667 5.2
19 -152.60813 (variable)
20 (flare cut) 30.00000
21 152.33559 11.49260 1.729157 54.68 0.5444 4.1
22* -265.71450 6.61910
23 139.88768 13.50202 1.438750 94.66 0.5340 -6.2
24 -246.30392 0.49825
25 264.09410 2.60000 1.854780 24.80 0.6122 4.9
26 97.10593 (variable)
27 86.50601 15.38886 1.496999 81.54 0.5375 -6.1
28 -236.96933 0.50000
29 415.87662 2.50000 1.805181 25.42 0.6161 1.8
30 139.36202 7.84908 1.603112 60.64 0.5415 3.2
31* -764.20052 (variable)
32 (aperture) 4.83283
33 -137.48989 1.40000 1.717004 47.92 0.5605 0.1
34 46.21721 0.44374
35 33.66049 4.52269 1.854780 24.80 0.6122 4.9
36 98.88257 3.01799
37 -252.81608 1.40000 1.891900 37.13 0.5780 5.6
38 78.97573 20.12699
39 -19240.92792 4.33387 1.487490 70.23 0.5300 -0.7
40 -38.41948 1.18634
41 -53.79231 1.60000 1.882997 40.76 0.5667 5.2
42 19.83504 9.34390 1.639799 34.46 0.5922 2.8
43 -49.11662 17.12285
44 -127.14477 7.14294 1.516330 64.14 0.5353 2.8
45 -26.14091 1.02057
46 -84.74111 1.80000 2.001000 29.13 0.5997 5.0
47 19.84757 12.37254 1.808095 22.76 0.6307 0.4
48 -78.29937 0.19910
49 804.51016 8.60002 1.548141 45.79 0.5686 2.0
50 -22.37499 1.80000 1.854780 24.80 0.6122 4.9
51 -80.59245 11.61779
52 -58.20663 8.07646 1.487490 70.23 0.5300 -0.7
53 -27.77017 9.49978
54 ∞ 63.04000 1.608590 46.44 0.5664 2.0
55 ∞ 8.70000 1.516330 64.15 0.5352 3.0
56 ∞ 11.00000
Image plane

Aspheric surface data surface 13
K = 1.99852e+000 A 4= 1.15677e-006 A 6=-2.75064e-008 A 8=-3.06848e-010 A10= 9.10515e-013 A12= 3.28486e-015 A14= 1.35261e-018 A16= 5.54400 e-022
A 3= 2.74335e-007 A 5= 9.95673e-008 A 7= 4.02226e-009 A 9= 6.12079e-012 A11=-8.52506e-014 A13=-6.85632e-017 A15=-3.84859e-020

Surface 22
K = 1.21093e+001 A 4= 2.82183e-007 A 6=-5.59441e-011 A 8=-2.00796e-014 A10= 9.78964e-017 A12=-6.30815e-020 A14= 1.70834e-023 A16= -4.73901e-027
A 3=-2.90901e-008 A 5= 1.58196e-009 A 7= 1.10620e-012 A 9=-1.50730e-015 A11= 5.86871e-020 A13= 1.04584e-022 A15= 1.44467e-025

Surface 31
K = -2.23400e+002 A 4= 2.77687e-007 A 6= 4.69555e-010 A 8= 1.39733e-013 A10=-2.98156e-016 A12= 4.58582e-019 A14=-2.25443e-022 A16= 5.80568e-026
A 3= 1.70768e-007 A 5=-5.73181e-009 A 7=-1.36230e-011 A 9= 7.92918e-015 A11=-8.14405e-018 A13= 2.06016e-021 A15=-8.57551e-025

各種データ
ズーム比 56.00
広角 中間 望遠
焦点距離 14.30 118.64 800.80
Fナンバー 2.95 2.95 4.28
画角 32.90 4.46 0.66
像高 9.25 9.25 9.25
レンズ全長 730.20 730.20 730.20
BF 11.00 11.00 11.00

d12 3.47 140.71 188.97
d19 259.33 80.94 9.68
d26 4.21 15.98 6.78
d31 2.99 32.37 64.58
d56 11.00 11.00 11.00

エクステンダ部
面番号 r d nd vd θgF dn/dT
38 78.97573 7.65521
39Ex 22.65484 7.83222 1.438750 94.66 0.5340 -6.2
40Ex -77.99915 0.62769
41Ex 55.95873 5.04320 1.761821 26.52 0.6136 2.4
42Ex -31.40411 0.92000 2.050900 26.94 0.6054 5.4
43Ex 23.19638 2.69003
44Ex 67.41261 0.90000 1.882997 40.76 0.5667 5.2
45Ex 14.96828 6.40169 1.784723 25.68 0.6161 2.1
46Ex -68.68675 3.40456
47Ex -142.00060 0.80000 1.834810 42.74 0.5648 5.3
48Ex 69.66418 17.43936

エクステンダ挿脱時各種データ

広角 中間 望遠
焦点距離 21.45 177.96 1201.20
Fナンバー 4.42 4.43 6.42
画角 23.33 2.98 0.44
像高 9.25 9.25 9.25
レンズ全長 730.20 730.20 730.20
BF 11.00 11.00 11.00
Various data Zoom ratio 56.00
Wide-angle mid-telephoto focal length 14.30 118.64 800.80
F number 2.95 2.95 4.28
Angle of view 32.90 4.46 0.66
Image height 9.25 9.25 9.25
Total lens length 730.20 730.20 730.20
BF 11.00 11.00 11.00

d12 3.47 140.71 188.97
d19 259.33 80.94 9.68
d26 4.21 15.98 6.78
d31 2.99 32.37 64.58
d56 11.00 11.00 11.00

Extender surface number rd nd vd θgF dn/dT
38 78.97573 7.65521
39Ex 22.65484 7.83222 1.438750 94.66 0.5340 -6.2
40Ex -77.99915 0.62769
41Ex 55.95873 5.04320 1.761821 26.52 0.6136 2.4
42Ex -31.40411 0.92000 2.050900 26.94 0.6054 5.4
43Ex 23.19638 2.69003
44Ex 67.41261 0.90000 1.882997 40.76 0.5667 5.2
45Ex 14.96828 6.40169 1.784723 25.68 0.6161 2.1
46Ex -68.68675 3.40456
47Ex -142.00060 0.80000 1.834810 42.74 0.5648 5.3
48Ex 69.66418 17.43936

Various data when the extender is inserted or removed

Wide-angle mid-telephoto focal length 21.45 177.96 1201.20
F number 4.42 4.43 6.42
Angle of view 23.33 2.98 0.44
Image height 9.25 9.25 9.25
Total lens length 730.20 730.20 730.20
BF 11.00 11.00 11.00

<数値実施例2>
単位 mm
面データ
面番号 r d nd vd θgF dn/dT
1 -2942.18811 6.00000 1.834810 42.74 0.5648 5.3
2 335.45859 1.80000
3 335.06633 23.70767 1.433870 95.10 0.5373 -10.1
4 -1057.92901 0.20000
5 525.29863 14.68252 1.433870 95.10 0.5373 -10.1
6 -2449.90453 25.25075
7 377.04224 20.53079 1.433870 95.10 0.5373 -10.1
8 -1365.49684 0.25000
9 306.95406 16.15620 1.433870 95.10 0.5373 -10.1
10 1716.23164 1.49946
11 188.24393 16.19337 1.438750 94.66 0.5340 -6.2
12 408.07756 (可変)
13* -532.82374 2.20000 2.003300 28.27 0.5980 10.1
14 38.13165 11.72245
15 -44.54614 1.45000 1.743198 49.34 0.5531 6.6
16 72.56546 9.77415 1.892860 20.36 0.6393 1.9
17 -46.48441 1.62858
18 -41.75805 2.00000 1.882997 40.76 0.5667 5.2
19 -152.60813 (可変)
20 152.33559 11.49260 1.729157 54.68 0.5444 4.1
21* -265.71450 6.61910
22 139.88768 13.50202 1.438750 94.66 0.5340 -6.2
23 -246.30392 0.49825
24 264.09410 2.60000 1.854780 24.80 0.6122 4.9
25 97.10593 (可変)
26 86.50601 15.38886 1.496999 81.54 0.5375 -6.1
27 -236.96933 0.50000
28 415.87662 2.50000 1.805181 25.42 0.6161 1.8
29 139.36202 7.84908 1.603112 60.64 0.5415 3.2
30* -764.20052 (可変)
31 (絞り) 5.24695
32 -117.24536 1.40000 1.762001 40.10 0.5765 4.0
33 41.72602 1.01137
34 36.11425 3.72703 1.854780 24.80 0.6122 4.9
35 81.40337 4.03279
36 -97.33562 1.70000 1.882997 40.76 0.5667 5.2
37 -206.67487 8.29194
38 -439.64699 1.50000 1.870700 40.73 0.5686 4.3
39 22.79520 7.14334 1.846660 23.87 0.6205 2.0
40 -277.85528 4.26902
41 -32.77439 1.50000 1.953750 32.32 0.5898 5.4
42 291.67966 7.83297 1.516330 64.14 0.5353 2.8
43 -26.75093 10.83649
44 2012.14987 4.62756 1.516330 64.14 0.5353 2.8
45 -58.46920 1.39998
46 -144.22960 1.50000 2.001000 29.13 0.5997 5.0
47 30.17606 9.22964 1.805181 25.42 0.6161 1.8
48 -72.85310 0.20000
49 103.12277 7.78391 1.438750 94.66 0.5340 -6.2
50 -35.13592 1.50000 2.001000 29.13 0.5997 5.0
51 -115.24911 0.20000
52 117.72591 7.13857 1.516330 64.14 0.5353 2.8
53 -40.99734 10.00000
54 ∞ 33.00000 1.608590 46.44 0.5664 2.0
55 ∞ 13.20000 1.516330 64.15 0.5352 3.0
56 ∞ 13.29000
像面

非球面データ
第13面
K = 1.99852e+000 A 4= 1.15677e-006 A 6=-2.75064e-008 A 8=-3.06848e-010 A10= 9.10515e-013 A12= 3.28486e-015 A14= 1.35261e-018 A16= 5.54400e-022
A 3= 2.74335e-007 A 5= 9.95673e-008 A 7= 4.02226e-009 A 9= 6.12079e-012 A11=-8.52506e-014 A13=-6.85632e-017 A15=-3.84859e-020

第21面
K = 1.21093e+001 A 4= 2.82183e-007 A 6=-5.59441e-011 A 8=-2.00796e-014 A10= 9.78964e-017 A12=-6.30815e-020 A14= 1.70834e-023 A16=-4.73901e-027
A 3=-2.90901e-008 A 5= 1.58196e-009 A 7= 1.10620e-012 A 9=-1.50730e-015 A11= 5.86871e-020 A13= 1.04584e-022 A15= 1.44467e-025

第30面
K =-2.23400e+002 A 4= 2.77687e-007 A 6= 4.69555e-010 A 8= 1.39733e-013 A10=-2.98156e-016 A12= 4.58582e-019 A14=-2.25443e-022 A16= 5.80568e-026
A 3= 1.70768e-007 A 5=-5.73181e-009 A 7=-1.36230e-011 A 9= 7.92918e-015 A11=-8.14405e-018 A13= 2.06016e-021 A15=-8.57551e-025

各種データ
ズーム比 120.00
広角 中間 望遠
焦点距離 8.50 70.52 1020.00
Fナンバー 1.75 1.75 5.44
画角 32.91 4.46 0.31
像高 5.50 5.50 5.50
レンズ全長 677.56 677.56 677.56
BF 13.29 13.29 13.29

d12 3.47 140.71 194.08
d19 289.33 110.94 2.00
d25 4.21 15.98 4.50
d30 2.99 32.37 99.42
d56 13.29 13.29 13.29
<Numerical Example 2>
Unit mm
Surface data Surface number rd nd vd θgF dn/dT
1 -2942.18811 6.00000 1.834810 42.74 0.5648 5.3
2 335.45859 1.80000
3 335.06633 23.70767 1.433870 95.10 0.5373 -10.1
4 -1057.92901 0.20000
5 525.29863 14.68252 1.433870 95.10 0.5373 -10.1
6 -2449.90453 25.25075
7 377.04224 20.53079 1.433870 95.10 0.5373 -10.1
8 -1365.49684 0.25000
9 306.95406 16.15620 1.433870 95.10 0.5373 -10.1
10 1716.23164 1.49946
11 188.24393 16.19337 1.438750 94.66 0.5340 -6.2
12 408.07756 (variable)
13* -532.82374 2.20000 2.003300 28.27 0.5980 10.1
14 38.13165 11.72245
15 -44.54614 1.45000 1.743198 49.34 0.5531 6.6
16 72.56546 9.77415 1.892860 20.36 0.6393 1.9
17 -46.48441 1.62858
18 -41.75805 2.00000 1.882997 40.76 0.5667 5.2
19 -152.60813 (variable)
20 152.33559 11.49260 1.729157 54.68 0.5444 4.1
21* -265.71450 6.61910
22 139.88768 13.50202 1.438750 94.66 0.5340 -6.2
23 -246.30392 0.49825
24 264.09410 2.60000 1.854780 24.80 0.6122 4.9
25 97.10593 (variable)
26 86.50601 15.38886 1.496999 81.54 0.5375 -6.1
27 -236.96933 0.50000
28 415.87662 2.50000 1.805181 25.42 0.6161 1.8
29 139.36202 7.84908 1.603112 60.64 0.5415 3.2
30* -764.20052 (variable)
31 (aperture) 5.24695
32 -117.24536 1.40000 1.762001 40.10 0.5765 4.0
33 41.72602 1.01137
34 36.11425 3.72703 1.854780 24.80 0.6122 4.9
35 81.40337 4.03279
36 -97.33562 1.70000 1.882997 40.76 0.5667 5.2
37 -206.67487 8.29194
38 -439.64699 1.50000 1.870700 40.73 0.5686 4.3
39 22.79520 7.14334 1.846660 23.87 0.6205 2.0
40 -277.85528 4.26902
41 -32.77439 1.50000 1.953750 32.32 0.5898 5.4
42 291.67966 7.83297 1.516330 64.14 0.5353 2.8
43 -26.75093 10.83649
44 2012.14987 4.62756 1.516330 64.14 0.5353 2.8
45 -58.46920 1.39998
46 -144.22960 1.50000 2.001000 29.13 0.5997 5.0
47 30.17606 9.22964 1.805181 25.42 0.6161 1.8
48 -72.85310 0.20000
49 103.12277 7.78391 1.438750 94.66 0.5340 -6.2
50 -35.13592 1.50000 2.001000 29.13 0.5997 5.0
51 -115.24911 0.20000
52 117.72591 7.13857 1.516330 64.14 0.5353 2.8
53 -40.99734 10.00000
54 ∞ 33.00000 1.608590 46.44 0.5664 2.0
55 ∞ 13.20000 1.516330 64.15 0.5352 3.0
56 ∞ 13.29000
Image plane

Aspheric surface data surface 13
K = 1.99852e+000 A 4= 1.15677e-006 A 6=-2.75064e-008 A 8=-3.06848e-010 A10= 9.10515e-013 A12= 3.28486e-015 A14= 1.35261e-018 A16= 5.54400 e-022
A 3= 2.74335e-007 A 5= 9.95673e-008 A 7= 4.02226e-009 A 9= 6.12079e-012 A11=-8.52506e-014 A13=-6.85632e-017 A15=-3.84859e-020

Side 21
K = 1.21093e+001 A 4= 2.82183e-007 A 6=-5.59441e-011 A 8=-2.00796e-014 A10= 9.78964e-017 A12=-6.30815e-020 A14= 1.70834e-023 A16= -4.73901e-027
A 3=-2.90901e-008 A 5= 1.58196e-009 A 7= 1.10620e-012 A 9=-1.50730e-015 A11= 5.86871e-020 A13= 1.04584e-022 A15= 1.44467e-025

Surface 30
K = -2.23400e+002 A 4= 2.77687e-007 A 6= 4.69555e-010 A 8= 1.39733e-013 A10=-2.98156e-016 A12= 4.58582e-019 A14=-2.25443e-022 A16= 5.80568e-026
A 3= 1.70768e-007 A 5=-5.73181e-009 A 7=-1.36230e-011 A 9= 7.92918e-015 A11=-8.14405e-018 A13= 2.06016e-021 A15=-8.57551e-025

Various data Zoom ratio 120.00
Wide-angle mid-telephoto focal length 8.50 70.52 1020.00
F number 1.75 1.75 5.44
Angle of view 32.91 4.46 0.31
Image height 5.50 5.50 5.50
Total lens length 677.56 677.56 677.56
BF 13.29 13.29 13.29

d12 3.47 140.71 194.08
d19 289.33 110.94 2.00
d25 4.21 15.98 4.50
d30 2.99 32.37 99.42
d56 13.29 13.29 13.29

<数値実施例3>
単位 mm

面番号 r d nd vd θgF dn/dT
1 378.48165 5.35000 1.772499 49.60 0.5520 4.7
2 104.30474 48.15487
3 -173.47322 4.40000 1.696797 55.53 0.5434 4.2
4 671.08887 0.09299
5 254.55301 10.80583 1.805181 25.42 0.6161 1.8
6 1068.64458 6.57913
7 7885.69945 19.25204 1.433870 95.10 0.5373 -10.1
8 -182.52731 0.09864
9 -3663.98983 4.20000 1.720467 34.71 0.5834 3.9
10 247.17073 18.69132 1.496999 81.54 0.5375 -6.1
11 -364.03637 26.28305
12 690.30071 19.68226 1.433870 95.10 0.5373 -10.1
13 -214.30176 1.59065
14 167.28801 4.30000 1.755199 27.51 0.6103 2.6
15 114.35424 0.83582
16 117.62468 28.01647 1.496999 81.54 0.5375 -6.1
17 -2803.18358 0.08859
18 151.65937 14.73531 1.620411 60.29 0.5427 2.0
19 691.06916 (可変)
20* 556.45781 2.50000 1.772499 49.60 0.5520 4.7
21 43.70280 4.28305
22 64.47126 9.75889 1.808095 22.76 0.6307 0.4
23 -67.72978 1.50000 1.754999 52.32 0.5475 5.1
24 53.76655 7.53861
25 -42.51256 1.50000 1.882997 40.76 0.5667 5.2
26 -142.79643 (可変)
27 (フレアカット) 15.00000
28 112.99500 7.64436 1.592400 68.30 0.5456 -9.2
29* -106.42637 0.09674
30 125.97027 8.85939 1.438750 94.93 0.5340 -6.6
31 -77.31383 0.49461
32 -91.08900 1.90000 1.755199 27.51 0.6103 2.6
33 622.86364 5.76098 1.438750 94.93 0.5340 -6.6
34 -94.88868 (可変)
35 1955.31277 2.00000 1.654115 39.68 0.5737 5.0
36 180.45807 0.49332
37* 135.06046 5.25584 1.696797 55.53 0.5434 4.2
38 -217.01028 (可変)
39 (絞り) 4.24016
40 -73.06197 1.40000 1.717004 47.92 0.5605 0.1
41 27.73501 1.87771
42 31.69846 8.22365 1.854780 24.80 0.6122 4.9
43 -26.99013 1.40000 1.834810 42.74 0.5648 5.3
44 76.19040 9.09715
45 -26.77521 1.40000 1.910820 35.25 0.5824 5.8
46 63.13027 7.05970 1.850250 30.05 0.5979 3.5
47 -29.32982 3.28691
48 -68.62774 1.80000 1.959060 17.47 0.6598 5.0
49 49.21043 7.54051 1.720467 34.71 0.5834 3.9
50 -36.94636 26.22566
51 223.13006 8.41971 1.516330 64.14 0.5353 2.8
52 -37.16995 0.98432
53 -73.44174 1.50000 2.003300 28.27 0.5980 10.1
54 26.53783 8.45811 1.922860 18.90 0.6495 2.8
55 1358.45792 8.77341
56 190.00280 9.87280 1.438750 94.66 0.5340 -6.2
57 -25.03765 1.50000 1.882997 40.76 0.5667 5.2
58 -65.78893 0.28000
59 100.00000 7.20000 1.438750 94.66 0.5340 -6.2
60 -44.07496 10.00000
61 ∞ 63.04000 1.608590 46.44 0.5664 2.0
62 ∞ 8.70000 1.516330 64.15 0.5352 3.0
63 ∞ 10.00000
像面

非球面データ
第20面
K =-2.04859e+002 A 4= 6.64887e-007 A 6=-2.22325e-011 A 8=-1.47253e-013

第29面
K =-1.67902e+000 A 4= 6.35831e-007 A 6= 1.31051e-011 A 8= 3.96102e-014

第37面
K = 8.78418e+000 A 4=-5.94570e-007 A 6=-3.43946e-010 A 8= 7.66112e-014

各種データ
ズーム比 20.00
広角 中間 望遠
焦点距離 11.40 99.40 228.00
Fナンバー 2.70 2.70 2.70
画角 39.06 5.32 2.32
像高 9.25 9.25 9.25
レンズ全長 650.49 650.49 650.49
BF 10.00 10.00 10.00

d19 2.01 90.08 104.66
d26 145.80 35.50 2.65
d34 0.66 0.02 16.55
d38 2.00 24.87 26.61
d63 10.00 10.00 10.00
<Numerical value example 3>
Unit mm

Surface number rd nd vd θgF dn/dT
1 378.48165 5.35000 1.772499 49.60 0.5520 4.7
2 104.30474 48.15487
3 -173.47322 4.40000 1.696797 55.53 0.5434 4.2
4 671.08887 0.09299
5 254.55301 10.80583 1.805181 25.42 0.6161 1.8
6 1068.64458 6.57913
7 7885.69945 19.25204 1.433870 95.10 0.5373 -10.1
8 -182.52731 0.09864
9 -3663.98983 4.20000 1.720467 34.71 0.5834 3.9
10 247.17073 18.69132 1.496999 81.54 0.5375 -6.1
11 -364.03637 26.28305
12 690.30071 19.68226 1.433870 95.10 0.5373 -10.1
13 -214.30176 1.59065
14 167.28801 4.30000 1.755199 27.51 0.6103 2.6
15 114.35424 0.83582
16 117.62468 28.01647 1.496999 81.54 0.5375 -6.1
17 -2803.18358 0.08859
18 151.65937 14.73531 1.620411 60.29 0.5427 2.0
19 691.06916 (variable)
20* 556.45781 2.50000 1.772499 49.60 0.5520 4.7
21 43.70280 4.28305
22 64.47126 9.75889 1.808095 22.76 0.6307 0.4
23 -67.72978 1.50000 1.754999 52.32 0.5475 5.1
24 53.76655 7.53861
25 -42.51256 1.50000 1.882997 40.76 0.5667 5.2
26 -142.79643 (variable)
27 (flare cut) 15.00000
28 112.99500 7.64436 1.592400 68.30 0.5456 -9.2
29* -106.42637 0.09674
30 125.97027 8.85939 1.438750 94.93 0.5340 -6.6
31 -77.31383 0.49461
32 -91.08900 1.90000 1.755199 27.51 0.6103 2.6
33 622.86364 5.76098 1.438750 94.93 0.5340 -6.6
34 -94.88868 (variable)
35 1955.31277 2.00000 1.654115 39.68 0.5737 5.0
36 180.45807 0.49332
37* 135.06046 5.25584 1.696797 55.53 0.5434 4.2
38 -217.01028 (variable)
39 (Aperture) 4.24016
40 -73.06197 1.40000 1.717004 47.92 0.5605 0.1
41 27.73501 1.87771
42 31.69846 8.22365 1.854780 24.80 0.6122 4.9
43 -26.99013 1.40000 1.834810 42.74 0.5648 5.3
44 76.19040 9.09715
45 -26.77521 1.40000 1.910820 35.25 0.5824 5.8
46 63.13027 7.05970 1.850250 30.05 0.5979 3.5
47 -29.32982 3.28691
48 -68.62774 1.80000 1.959060 17.47 0.6598 5.0
49 49.21043 7.54051 1.720467 34.71 0.5834 3.9
50 -36.94636 26.22566
51 223.13006 8.41971 1.516330 64.14 0.5353 2.8
52 -37.16995 0.98432
53 -73.44174 1.50000 2.003300 28.27 0.5980 10.1
54 26.5 3783 8.45811 1.922860 18.90 0.6495 2.8
55 1358.45792 8.77341
56 190.00280 9.87280 1.438750 94.66 0.5340 -6.2
57 -25.03765 1.50000 1.882997 40.76 0.5667 5.2
58 -65.78893 0.28000
59 100.00000 7.20000 1.438750 94.66 0.5340 -6.2
60 -44.07496 10.00000
61 ∞ 63.04000 1.608590 46.44 0.5664 2.0
62 ∞ 8.70000 1.516330 64.15 0.5352 3.0
63 ∞ 10.00000
Image plane

Aspheric surface data Surface 20
K =-2.04859e+002 A 4= 6.64887e-007 A 6=-2.22325e-011 A 8=-1.47253e-013

Surface 29
K =-1.67902e+000 A 4= 6.35831e-007 A 6= 1.31051e-011 A 8= 3.96102e-014

Surface 37
K = 8.78418e+000 A 4=-5.94570e-007 A 6=-3.43946e-010 A 8= 7.66112e-014

Various data Zoom ratio 20.00
Wide-angle mid-telephoto focal length 11.40 99.40 228.00
F number 2.70 2.70 2.70
Angle of view 39.06 5.32 2.32
Image height 9.25 9.25 9.25
Total lens length 650.49 650.49 650.49
BF 10.00 10.00 10.00

d19 2.01 90.08 104.66
d26 145.80 35.50 2.65
d34 0.66 0.02 16.55
d38 2.00 24.87 26.61
d63 10.00 10.00 10.00

<数値実施例4>
単位 mm
面データ
面番号 r d nd vd θgF dn/dT
1 378.48165 5.35000 1.772499 49.60 0.5520 4.7
2 104.30474 48.15487
3 -173.47322 4.40000 1.696797 55.53 0.5434 4.2
4 671.08887 0.09299
5 254.55301 10.80583 1.805181 25.42 0.6161 1.8
6 1068.64458 6.57913
7 7885.69945 19.25204 1.433870 95.10 0.5373 -10.1
8 -182.52731 0.09864
9 -3663.98983 4.20000 1.720467 34.71 0.5834 3.9
10 247.17073 18.69132 1.496999 81.54 0.5375 -6.1
11 -364.03637 26.28305
12 690.30071 19.68226 1.433870 95.10 0.5373 -10.1
13 -214.30176 1.59065
14 167.28801 4.30000 1.755199 27.51 0.6103 2.6
15 114.35424 0.83582
16 117.62468 28.01647 1.496999 81.54 0.5375 -6.1
17 -2803.18358 0.08859
18 151.65937 14.73531 1.620411 60.29 0.5427 2.0
19 691.06916 (可変)
20* 556.45781 2.50000 1.772499 49.60 0.5520 4.7
21 43.70280 4.28305
22 64.47126 9.75889 1.808095 22.76 0.6307 0.1
23 -67.72978 1.50000 1.754999 52.32 0.5475 5.1
24 53.76655 7.53861
25 -42.51256 1.50000 1.882997 40.76 0.5667 5.2
26 -142.79643 (可変)
27 112.99500 7.64436 1.592400 68.30 0.5456 -9.2
28* -106.42637 0.09674
29 125.97027 8.85939 1.438750 94.93 0.5340 -6.6
30 -77.31383 0.49461
31 -91.08900 1.90000 1.755199 27.51 0.6103 2.6
32 622.86364 5.76098 1.438750 94.93 0.5340 -6.6
33 -94.88868 (可変)
34 1955.31277 2.00000 1.654115 39.68 0.5737 5.0
35 180.45807 0.49332
36* 135.06046 5.25584 1.696797 55.53 0.5434 4.2
37 -217.01028 (可変)
38 (絞り) 4.36998
39 -69.32187 1.40000 1.720000 43.69 0.5699 2.1
40 32.00339 1.36623
41 30.93487 7.67181 1.788800 28.43 0.6013 5.3
42 -31.00980 1.40000 1.729157 54.68 0.5444 4.1
43 55.71959 9.27740
44 -26.77521 1.40000 1.763850 48.49 0.5589 3.5
45 24.36654 9.07813 1.671390 31.32 0.6003 3.4
46 -41.17693 7.65711
47 -154.89411 1.80000 1.959060 17.47 0.6598 5.0
48 113.27398 8.19361 1.487490 70.23 0.5300 -0.7
49 -30.94758 7.98752
50 -2068.80257 7.06052 1.516330 64.14 0.5353 2.8
51 -32.31668 0.97277
52 -40.92605 1.50000 2.050900 26.94 0.6054 5.4
53 169.31954 5.55862 1.959060 17.47 0.6598 5.0
54 -70.41645 0.18568
55 162.66763 7.99349 1.438750 94.66 0.5340 -6.2
56 -34.53590 1.50000 1.854780 24.80 0.6122 4.9
57 -65.78893 0.28000
58 61.10877 7.20000 1.487490 70.23 0.5300 -0.7
59 -110.91719 10.00000
60 ∞ 33.00000 1.608590 46.44 0.5664 2.0
61 ∞ 13.20000 1.516330 64.14 0.5353 3.0
62 ∞ 10.00000
像面

非球面データ
第20面
K =-2.04859e+002 A 4= 6.64887e-007 A 6=-2.22325e-011 A 8=-1.47253e-013

第28面
K =-1.67902e+000 A 4= 6.35831e-007 A 6= 1.31051e-011 A 8= 3.96102e-014

第36面
K = 8.78418e+000 A 4=-5.94570e-007 A 6=-3.43946e-010 A 8= 7.66112e-014

各種データ
ズーム比 28.00
広角 中間 望遠
焦点距離 6.75 66.57 189.00
Fナンバー 1.60 1.60 2.30
画角 39.17 4.72 1.67
像高 5.50 5.50 5.50
レンズ全長 598.26 598.26 598.26
BF 10.00 10.00 10.00

d19 2.01 93.00 108.06
d26 160.80 46.17 1.24
d33 0.66 0.67 29.79
d37 2.00 25.63 26.38
d62 10.00 10.00 10.00
<Numerical Example 4>
Unit mm
Surface data Surface number rd nd vd θgF dn/dT
1 378.48165 5.35000 1.772499 49.60 0.5520 4.7
2 104.30474 48.15487
3 -173.47322 4.40000 1.696797 55.53 0.5434 4.2
4 671.08887 0.09299
5 254.55301 10.80583 1.805181 25.42 0.6161 1.8
6 1068.64458 6.57913
7 7885.69945 19.25204 1.433870 95.10 0.5373 -10.1
8 -182.52731 0.09864
9 -3663.98983 4.20000 1.720467 34.71 0.5834 3.9
10 247.17073 18.69132 1.496999 81.54 0.5375 -6.1
11 -364.03637 26.28305
12 690.30071 19.68226 1.433870 95.10 0.5373 -10.1
13 -214.30176 1.59065
14 167.28801 4.30000 1.755199 27.51 0.6103 2.6
15 114.35424 0.83582
16 117.62468 28.01647 1.496999 81.54 0.5375 -6.1
17 -2803.18358 0.08859
18 151.65937 14.73531 1.620411 60.29 0.5427 2.0
19 691.06916 (variable)
20* 556.45781 2.50000 1.772499 49.60 0.5520 4.7
21 43.70280 4.28305
22 64.47126 9.75889 1.808095 22.76 0.6307 0.1
23 -67.72978 1.50000 1.754999 52.32 0.5475 5.1
24 53.76655 7.53861
25 -42.51256 1.50000 1.882997 40.76 0.5667 5.2
26 -142.79643 (variable)
27 112.99500 7.64436 1.592400 68.30 0.5456 -9.2
28* -106.42637 0.09674
29 125.97027 8.85939 1.438750 94.93 0.5340 -6.6
30 -77.31383 0.49461
31 -91.08900 1.90000 1.755199 27.51 0.6103 2.6
32 622.86364 5.76098 1.438750 94.93 0.5340 -6.6
33 -94.88868 (variable)
34 1955.31277 2.00000 1.654115 39.68 0.5737 5.0
35 180.45807 0.49332
36* 135.06046 5.25584 1.696797 55.53 0.5434 4.2
37 -217.01028 (variable)
38 (aperture) 4.36998
39 -69.32187 1.40000 1.720000 43.69 0.5699 2.1
40 32.00339 1.36623
41 30.93487 7.67181 1.788800 28.43 0.6013 5.3
42 -31.00980 1.40000 1.729157 54.68 0.5444 4.1
43 55.71959 9.27740
44 -26.77521 1.40000 1.763850 48.49 0.5589 3.5
45 24.36654 9.07813 1.671390 31.32 0.6003 3.4
46 -41.17693 7.65711
47 -154.89411 1.80000 1.959060 17.47 0.6598 5.0
48 113.27398 8.19361 1.487490 70.23 0.5300 -0.7
49 -30.94758 7.98752
50 -2068.80257 7.06052 1.516330 64.14 0.5353 2.8
51 -32.31668 0.97277
52 -40.92605 1.50000 2.050900 26.94 0.6054 5.4
53 169.31954 5.55862 1.959060 17.47 0.6598 5.0
54 -70.41645 0.18568
55 162.66763 7.99349 1.438750 94.66 0.5340 -6.2
56 -34.53590 1.50000 1.854780 24.80 0.6122 4.9
57 -65.78893 0.28000
58 61.10877 7.20000 1.487490 70.23 0.5300 -0.7
59 -110.91719 10.00000
60 ∞ 33.00000 1.608590 46.44 0.5664 2.0
61 ∞ 13.20000 1.516330 64.14 0.5353 3.0
62 ∞ 10.00000
Image plane

Aspheric surface data Surface 20
K =-2.04859e+002 A 4= 6.64887e-007 A 6=-2.22325e-011 A 8=-1.47253e-013

Surface 28
K =-1.67902e+000 A 4= 6.35831e-007 A 6= 1.31051e-011 A 8= 3.96102e-014

Surface 36
K = 8.78418e+000 A 4=-5.94570e-007 A 6=-3.43946e-010 A 8= 7.66112e-014

Various data Zoom ratio 28.00
Wide-angle mid-telephoto focal length 6.75 66.57 189.00
F number 1.60 1.60 2.30
Angle of view 39.17 4.72 1.67
Image height 5.50 5.50 5.50
Total lens length 598.26 598.26 598.26
BF 10.00 10.00 10.00

d19 2.01 93.00 108.06
d26 160.80 46.17 1.24
d33 0.66 0.67 29.79
d37 2.00 25.63 26.38
d62 10.00 10.00 10.00

<数値実施例5>
単位 mm

面番号 r d nd vd θgF dn/dT
1 -2942.18811 6.00000 1.834810 42.74 0.5648 5.3
2 335.45859 1.80000
3 335.06633 23.70767 1.433870 95.10 0.5373 -10.1
4 -1057.92901 0.20000
5 525.29863 14.68252 1.433870 95.10 0.5373 -10.1
6 -2449.90453 25.25075
7 377.04224 20.53079 1.433870 95.10 0.5373 -10.1
8 -1365.49684 0.25000
9 306.95406 16.15620 1.433870 95.10 0.5373 -10.1
10 1716.23164 1.49946
11 188.24393 16.19337 1.438750 94.66 0.5340 -6.2
12 408.07756 (可変)
13* -532.82374 2.20000 2.003300 28.27 0.5980 10.1
14 38.13165 11.72245
15 -44.54614 1.45000 1.743198 49.34 0.5531 6.6
16 72.56546 9.77415 1.892860 20.36 0.6393 1.9
17 -46.48441 1.62858
18 -41.75805 2.00000 1.882997 40.76 0.5667 5.2
19 -152.60813 (可変)
20 0.00000 30.00000
21 152.33559 11.49260 1.729157 54.68 0.5444 4.1
22* -265.71450 6.61910
23 139.88768 13.50202 1.438750 94.66 0.5340 -6.2
24 -246.30392 0.49825
25 264.09410 2.60000 1.854780 24.80 0.6122 4.9
26 97.10593 (可変)
27 86.50601 15.38886 1.496999 81.54 0.5375 -6.1
28 -236.96933 0.50000
29 415.87662 2.50000 1.805181 25.42 0.6161 1.8
30 139.36202 7.84908 1.603112 60.64 0.5415 3.2
31* -764.20052 (可変)
32 (絞り) 4.83283
33 -137.48989 1.40000 1.717004 47.92 0.5605 0.1
34 46.21721 0.44374
35 33.66049 4.52269 1.854780 24.80 0.6122 4.9
36 98.88257 3.01799
37 -252.81608 1.40000 1.891900 37.13 0.5780 5.6
38 78.97573 (可変)
39 -19240.92792 4.33387 1.487490 70.23 0.5300 -0.7
40 -38.41948 1.18634
41 -53.79231 1.60000 1.882997 40.76 0.5667 5.2
42 19.83504 9.34390 1.639799 34.46 0.5922 2.8
43 -49.11662 (可変)
44 97.13860 6.39440 1.516330 64.14 0.5353 2.8
45 -29.52196 0.69035
46 -57.34743 1.80000 2.001000 29.13 0.5997 5.0
47 24.44504 7.53183 1.808095 22.76 0.6307 0.4
48 -64.92800 0.59505
49 1409.95354 5.50212 1.548141 45.79 0.5686 2.0
50 -26.56416 1.80000 1.854780 24.80 0.6122 4.9
51 -123.45471 6.71153
52 -43.73629 4.87990 1.487490 70.23 0.5300 -0.7
53 -28.53682 19.64778
54 ∞ 33.00000 1.608590 46.44 0.5664 2.0
55 ∞ 13.20000 1.516330 64.15 0.5352 3.0
56 ∞ 11.00000
像面

非球面データ
第13面
K = 1.99852e+000 A 4= 1.15677e-006 A 6=-2.75064e-008 A 8=-3.06848e-010 A10= 9.10515e-013 A12= 3.28486e-015 A14= 1.35261e-018 A16= 5.54400e-022
A 3= 2.74335e-007 A 5= 9.95673e-008 A 7= 4.02226e-009 A 9= 6.12079e-012 A11=-8.52506e-014 A13=-6.85632e-017 A15=-3.84859e-020

第22面
K = 1.21093e+001 A 4= 2.82183e-007 A 6=-5.59441e-011 A 8=-2.00796e-014 A10= 9.78964e-017 A12=-6.30815e-020 A14= 1.70834e-023 A16=-4.73901e-027
A 3=-2.90901e-008 A 5= 1.58196e-009 A 7= 1.10620e-012 A 9=-1.50730e-015 A11= 5.86871e-020 A13= 1.04584e-022 A15= 1.44467e-025

第31面
K =-2.23400e+002 A 4= 2.77687e-007 A 6= 4.69555e-010 A 8= 1.39733e-013 A10=-2.98156e-016 A12= 4.58582e-019 A14=-2.25443e-022 A16= 5.80568e-026
A 3= 1.70768e-007 A 5=-5.73181e-009 A 7=-1.36230e-011 A 9= 7.92918e-015 A11=-8.14405e-018 A13= 2.06016e-021 A15=-8.57551e-025

各種データ
ズーム比 120.00
広角 中間 望遠
焦点距離 14.30 118.64 1715.99
Fナンバー 2.95 2.95 9.17
画角 21.04 2.65 0.18
像高 5.50 5.50 5.50
レンズ全長 696.00 696.00 696.00
BF 11.00 11.00 11.00

d12 3.47 140.71 194.08
d19 259.33 80.94 -28.00
d26 4.21 15.98 4.50
d31 2.99 32.37 99.42
d56 11.00 11.00 11.00
<Numerical Example 5>
Unit mm

Surface number rd nd vd θgF dn/dT
1 -2942.18811 6.00000 1.834810 42.74 0.5648 5.3
2 335.45859 1.80000
3 335.06633 23.70767 1.433870 95.10 0.5373 -10.1
4 -1057.92901 0.20000
5 525.29863 14.68252 1.433870 95.10 0.5373 -10.1
6 -2449.90453 25.25075
7 377.04224 20.53079 1.433870 95.10 0.5373 -10.1
8 -1365.49684 0.25000
9 306.95406 16.15620 1.433870 95.10 0.5373 -10.1
10 1716.23164 1.49946
11 188.24393 16.19337 1.438750 94.66 0.5340 -6.2
12 408.07756 (variable)
13* -532.82374 2.20000 2.003300 28.27 0.5980 10.1
14 38.13165 11.72245
15 -44.54614 1.45000 1.743198 49.34 0.5531 6.6
16 72.56546 9.77415 1.892860 20.36 0.6393 1.9
17 -46.48441 1.62858
18 -41.75805 2.00000 1.882997 40.76 0.5667 5.2
19 -152.60813 (variable)
20 0.00000 30.00000
21 152.33559 11.49260 1.729157 54.68 0.5444 4.1
22* -265.71450 6.61910
23 139.88768 13.50202 1.438750 94.66 0.5340 -6.2
24 -246.30392 0.49825
25 264.09410 2.60000 1.854780 24.80 0.6122 4.9
26 97.10593 (variable)
27 86.50601 15.38886 1.496999 81.54 0.5375 -6.1
28 -236.96933 0.50000
29 415.87662 2.50000 1.805181 25.42 0.6161 1.8
30 139.36202 7.84908 1.603112 60.64 0.5415 3.2
31* -764.20052 (variable)
32 (aperture) 4.83283
33 -137.48989 1.40000 1.717004 47.92 0.5605 0.1
34 46.21721 0.44374
35 33.66049 4.52269 1.854780 24.80 0.6122 4.9
36 98.88257 3.01799
37 -252.81608 1.40000 1.891900 37.13 0.5780 5.6
38 78.97573 (variable)
39 -19240.92792 4.33387 1.487490 70.23 0.5300 -0.7
40 -38.41948 1.18634
41 -53.79231 1.60000 1.882997 40.76 0.5667 5.2
42 19.83504 9.34390 1.639799 34.46 0.5922 2.8
43 -49.11662 (variable)
44 97.13860 6.39440 1.516330 64.14 0.5353 2.8
45 -29.52196 0.69035
46 -57.34743 1.80000 2.001000 29.13 0.5997 5.0
47 24.44504 7.53183 1.808095 22.76 0.6307 0.4
48 -64.92 800 0.59505
49 1409.95354 5.50212 1.548141 45.79 0.5686 2.0
50 -26.56416 1.80000 1.854780 24.80 0.6122 4.9
51 -123.45471 6.71153
52 -43.73629 4.87990 1.487490 70.23 0.5300 -0.7
53 -28.53682 19.64778
54 ∞ 33.00000 1.608590 46.44 0.5664 2.0
55 ∞ 13.20000 1.516330 64.15 0.5352 3.0
56 ∞ 11.00000
Image plane

Aspheric surface data surface 13
K = 1.99852e+000 A 4= 1.15677e-006 A 6=-2.75064e-008 A 8=-3.06848e-010 A10= 9.10515e-013 A12= 3.28486e-015 A14= 1.35261e-018 A16= 5.54400 e-022
A 3= 2.74335e-007 A 5= 9.95673e-008 A 7= 4.02226e-009 A 9= 6.12079e-012 A11=-8.52506e-014 A13=-6.85632e-017 A15=-3.84859e-020

Surface 22
K = 1.21093e+001 A 4= 2.82183e-007 A 6=-5.59441e-011 A 8=-2.00796e-014 A10= 9.78964e-017 A12=-6.30815e-020 A14= 1.70834e-023 A16= -4.73901e-027
A 3=-2.90901e-008 A 5= 1.58196e-009 A 7= 1.10620e-012 A 9=-1.50730e-015 A11= 5.86871e-020 A13= 1.04584e-022 A15= 1.44467e-025

Surface 31
K = -2.23400e+002 A 4= 2.77687e-007 A 6= 4.69555e-010 A 8= 1.39733e-013 A10=-2.98156e-016 A12= 4.58582e-019 A14=-2.25443e-022 A16= 5.80568e-026
A 3= 1.70768e-007 A 5=-5.73181e-009 A 7=-1.36230e-011 A 9= 7.92918e-015 A11=-8.14405e-018 A13= 2.06016e-021 A15=-8.57551e-025

Various data Zoom ratio 120.00
Wide-angle mid-telephoto focal length 14.30 118.64 1715.99
F number 2.95 2.95 9.17
Angle of view 21.04 2.65 0.18
Image height 5.50 5.50 5.50
Total lens length 696.00 696.00 696.00
BF 11.00 11.00 11.00

d12 3.47 140.71 194.08
d19 259.33 80.94 -28.00
d26 4.21 15.98 4.50
d31 2.99 32.37 99.42
d56 11.00 11.00 11.00

<数値実施例6>
単位 mm

面番号 r d nd vd θgF dn/dT
1 8902.10794 5.50000 1.834810 42.74 0.5648 5.3
2 293.03147 1.99995
3 299.65364 31.10908 1.433870 95.10 0.5373 -10.1
4 -514.32273 24.92526
5 303.46268 19.33457 1.433870 95.10 0.5373 -10.1
6 6129.82590 0.11000
7 247.80998 23.99668 1.433870 95.10 0.5373 -10.1
8 -7103.04474 1.49952
9 181.46264 14.73458 1.438750 94.66 0.5340 -6.2
10 337.17717 (可変)

11* -189.28261 2.20000 2.003300 28.27 0.5980 10.1
12 37.39179 11.68058
13 -43.41246 1.45000 1.800000 29.84 0.6017 4.9
14 53.80711 13.13593 1.892860 20.36 0.6393 1.9
15 -37.78691 (可変)

16 -33.14955 2.00000 1.816000 46.62 0.5568 5.9
17* -95.42316 (可変)

18 138.00593 10.59290 1.729157 54.68 0.5444 4.3
19* -541.13392 9.75028
20 147.03615 14.32052 1.496999 81.54 0.5375 -6.1
21 -160.09082 1.72518
22 173.67525 2.60000 1.854780 24.80 0.6122 4.9
23 80.58130 (可変)

24 79.07338 13.01608 1.438750 94.66 0.5340 -6.2
25 -620.46050 2.50000 1.854780 24.80 0.6122 4.9
26 399.95751 2.38502
27* 249.93337 8.85506 1.603112 60.64 0.5415 3.2
28 -170.41073 (可変)

29 0.00000 4.64798
30 -210.17118 1.40000 1.762001 40.10 0.5765 4.0
31 32.51053 1.46838
32 32.25167 4.10760 1.854780 24.80 0.6122 4.9
33 88.14868 3.56708
34 -118.14810 1.70000 1.882997 40.76 0.5667 5.2
35 -886.06913 8.58634
36 -95.94284 1.50000 1.870700 40.73 0.5686 3.9
37 27.24766 7.04925 1.846660 23.87 0.6205 2.0
38 -79.28097 3.14883
39 -35.05122 1.50000 1.953750 32.32 0.5898 5.3
40 171.78890 7.74533 1.516330 64.14 0.5353 2.8
41 -27.74785 12.13831
42 183.33936 5.22837 1.516330 64.14 0.5353 2.8
43 -57.35707 1.39996
44 -104.46964 1.50000 2.001000 29.13 0.5997 5.0
45 28.33700 8.85815 1.805181 25.42 0.6161 1.8
46 -90.21737 0.20000
47 150.63233 7.39248 1.438750 94.66 0.5340 -6.2
48 -33.52467 1.50000 2.001000 29.13 0.5997 5.0
49 -80.89823 0.20000
50 91.59160 7.30309 1.516330 64.14 0.5353 2.8
51 -42.72106 10.00000
52 ∞ 33.00000 1.608590 46.44 0.5664 2.0
53 ∞ 13.20000 1.516330 64.15 0.5352 3.0
54 ∞ 13.28712
像面

非球面データ
第11面
K = 0.00000e+000 A 4= 2.28615e-006 A 6=-1.38289e-009 A 8= 7.22628e-012 A10=-4.35752e-014 A12= 1.34169e-016 A14=-1.96183e-019 A16= 1.10092e-022

第17面
K = 0.00000e+000 A 4=-1.76959e-007 A 6=-1.58573e-010 A 8= 2.80712e-013 A10=-2.98755e-017 A12=-3.73787e-018 A14= 9.74883e-021 A16=-7.35536e-024

第19面
K = 0.00000e+000 A 4= 2.97276e-007 A 6= 2.55441e-012 A 8=-7.60558e-015 A10= 3.19715e-017 A12=-3.61423e-020 A14= 1.79078e-023 A16=-3.33963e-027

第27面
K = 0.00000e+000 A 4=-3.10347e-007 A 6= 2.06311e-011 A 8=-2.66872e-013 A10= 9.66509e-016 A12=-3.30933e-018 A14=-2.42884e-021 A16= 2.13705e-026
A13= 1.43782e-019 A15= 1.37717e-023


各種データ
ズーム比 100.00
広角 中間 望遠
焦点距離 8.20 100.00 820.00
Fナンバー 1.75 1.75 4.30
画角 33.85 3.15 0.38
像高 5.50 5.50 5.50
レンズ全長 681.63 681.63 681.63
BF 13.29 13.29 13.29

d10 4.14 158.05 192.85
d15 1.71 4.89 1.49
d17 287.83 93.94 3.22
d23 3.91 6.06 10.25
d28 2.99 37.63 92.77
d54 13.29 13.29 13.29
<Numerical Example 6>
Unit mm

Surface number rd nd vd θgF dn/dT
1 8902.10794 5.50000 1.834810 42.74 0.5648 5.3
2 293.03147 1.99995
3 299.65364 31.10908 1.433870 95.10 0.5373 -10.1
4 -514.32273 24.92526
5 303.46268 19.33457 1.433870 95.10 0.5373 -10.1
6 6129.82590 0.11000
7 247.80998 23.99668 1.433870 95.10 0.5373 -10.1
8 -7103.04474 1.49952
9 181.46264 14.73458 1.438750 94.66 0.5340 -6.2
10 337.17717 (variable)

11* -189.28261 2.20000 2.003300 28.27 0.5980 10.1
12 37.39179 11.68058
13 -43.41246 1.45000 1.800000 29.84 0.6017 4.9
14 53.80711 13.13593 1.892860 20.36 0.6393 1.9
15 -37.78691 (variable)

16 -33.14955 2.00000 1.816000 46.62 0.5568 5.9
17* -95.42316 (variable)

18 138.00593 10.59290 1.729157 54.68 0.5444 4.3
19* -541.13392 9.75028
20 147.03615 14.32052 1.496999 81.54 0.5375 -6.1
21 -160.09082 1.72518
22 173.67525 2.60000 1.854780 24.80 0.6122 4.9
23 80.58130 (variable)

24 79.07338 13.01608 1.438750 94.66 0.5340 -6.2
25 -620.46050 2.50000 1.854780 24.80 0.6122 4.9
26 399.95751 2.38502
27* 249.93337 8.85506 1.603112 60.64 0.5415 3.2
28 -170.41073 (variable)

29 0.00000 4.64798
30 -210.17118 1.40000 1.762001 40.10 0.5765 4.0
31 32.51053 1.46838
32 32.25167 4.10760 1.854780 24.80 0.6122 4.9
33 88.14868 3.56708
34 -118.14810 1.70000 1.882997 40.76 0.5667 5.2
35 -886.06913 8.58634
36 -95.94284 1.50000 1.870700 40.73 0.5686 3.9
37 27.24766 7.04925 1.846660 23.87 0.6205 2.0
38 -79.28097 3.14883
39 -35.05 122 1.50000 1.953750 32.32 0.5898 5.3
40 171.78890 7.74533 1.516330 64.14 0.5353 2.8
41 -27.74785 12.13831
42 183.33936 5.22837 1.516330 64.14 0.5353 2.8
43 -57.35707 1.39996
44 -104.46964 1.50000 2.001000 29.13 0.5997 5.0
45 28.33700 8.85815 1.805181 25.42 0.6161 1.8
46 -90.21737 0.20000
47 150.63233 7.39248 1.438750 94.66 0.5340 -6.2
48 -33.52467 1.50000 2.001000 29.13 0.5997 5.0
49 -80.89823 0.20000
50 91.59160 7.30309 1.516330 64.14 0.5353 2.8
51 -42.72106 10.00000
52 ∞ 33.00000 1.608590 46.44 0.5664 2.0
53 ∞ 13.20000 1.516330 64.15 0.5352 3.0
54 ∞ 13.28712
Image plane

Aspheric surface data surface 11
K = 0.00000e+000 A 4= 2.28615e-006 A 6=-1.38289e-009 A 8= 7.22628e-012 A10=-4.35752e-014 A12= 1.34169e-016 A14=-1.96183e-019 A16= 1.10092e-022

Surface 17
K = 0.00000e+000 A 4=-1.76959e-007 A 6=-1.58573e-010 A 8= 2.80712e-013 A10=-2.98755e-017 A12=-3.73787e-018 A14= 9.74883e-021 A16 =-7.35536e-024

Side 19
K = 0.00000e+000 A 4= 2.97276e-007 A 6= 2.55441e-012 A 8=-7.60558e-015 A10= 3.19715e-017 A12=-3.61423e-020 A14= 1.79078e-023 A16=- 3.33963e-027

27th side
K = 0.00000e+000 A 4=-3.10347e-007 A 6= 2.06311e-011 A 8=-2.66872e-013 A10= 9.66509e-016 A12=-3.30933e-018 A14=-2.42884e-021 A16 = 2.13705e-026
A13= 1.43782e-019 A15= 1.37717e-023


Various data Zoom ratio 100.00
Wide-angle mid-telephoto focal length 8.20 100.00 820.00
F number 1.75 1.75 4.30
Angle of view 33.85 3.15 0.38
Image height 5.50 5.50 5.50
Total lens length 681.63 681.63 681.63
BF 13.29 13.29 13.29

d10 4.14 158.05 192.85
d15 1.71 4.89 1.49
d17 287.83 93.94 3.22
d23 3.91 6.06 10.25
d28 2.99 37.63 92.77
d54 13.29 13.29 13.29

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Figure 2020085935
Figure 2020085935

Claims (8)

物体側から像側へ順に、変倍のためには移動しない正の第1レンズ群と、変倍のために移動する1つまたは2つの負のサブレンズ群から構成される前移動レンズ群と、変倍のために移動する2つのサブレンズ群から構成される後移動レンズ群と、変倍のためには移動しない最終レンズ群と、からなり、
前記最終レンズ群は、物体側から像側へ順に、負レンズAnを含む負の屈折力の負レンズ群と、正レンズBpを含む正の屈折力の正レンズ群とからなり、
前記最終レンズ群の横倍率をβLとし、前記負レンズAnの屈折率の温度係数およびアッベ数をそれぞれdNdTAnおよびνdAnとし、前記正レンズBpの部分分散比およびアッベ数をそれぞれθgFBpおよびνdBpとして、条件式
0.8≦β≦3.0
−3.0≦dn/dTAn≦4.2
30.0≦νdAn≦70.2
0.01≦0.00162×νdBp−0.6414+θgFBp≦0.05
を満足することを特徴とするズームレンズ。
なお、屈折率の温度係数は、20℃ないし40℃の空気中における相対屈折率の温度係数とし、アッベ数νおよび部分分散比θは、フラウンフォーファ線のg線、F線、d線、およびC線に対する屈折率をそれぞれNg、NF、Nd、およびNCとして、それぞれ
ν=(Nd−1)/(NF−NC)、および
θ=(Ng−NF)/(NF−NC)
で表される。
From the object side to the image side, in order, a positive first lens group that does not move for zooming, and a front-moving lens group that is composed of one or two negative sub-lens groups that move for zooming. , A rear moving lens group composed of two sub-lens groups that move for zooming, and a final lens group that does not move for zooming,
The final lens group includes, in order from the object side to the image side, a negative lens group having a negative refractive power including a negative lens An and a positive lens group having a positive refractive power including a positive lens Bp,
The lateral magnification of the final lens group is βL, the temperature coefficient of the refractive index of the negative lens An and the Abbe number are dNdTAn and νdAn, respectively, and the partial dispersion ratio and the Abbe number of the positive lens Bp are θgFBp and νdBp, respectively. Formula 0.8≦β≦3.0
−3.0≦dn/dTAn≦4.2
30.0≦νdAn≦70.2
0.01≦0.00162×ν dBp−0.6414+θgFBp≦0.05
A zoom lens characterized by satisfying.
The temperature coefficient of the refractive index is the temperature coefficient of the relative refractive index in air at 20° C. to 40° C., and the Abbe number ν and the partial dispersion ratio θ are g-line, F-line, and d-line of the Fraunhofer line. , And N are the refractive indices for the C line and ν=(Nd-1)/(NF-NC), and θ=(Ng-NF)/(NF-NC), respectively.
It is represented by.
前記負レンズ群の焦点距離をfLAとし、前記負レンズAnの焦点距離をfAnとして、条件式
0.3≦fAn/fLA≦1.5
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。
If the focal length of the negative lens group is fLA and the focal length of the negative lens An is fAn, the conditional expression is 0.3≦fAn/fLA≦1.5.
The zoom lens according to claim 1, characterized in that:
前記負レンズ群は、少なくとも2枚の負レンズと1枚の正レンズApとを有し、前記正レンズApのアッベ数および部分分散比をそれぞれνdApおよびθgFApとして、条件式
0≦0.00162×νdAp−0.6414+θgFAp≦0.02
22.8<νdAp≦35.0
を満足することを特徴とする請求項1または2に記載のズームレンズ。
The negative lens group has at least two negative lenses and one positive lens Ap, and the Abbe number and the partial dispersion ratio of the positive lens Ap are νdAp and θgFAp, respectively, and conditional expression 0≦0.00162× νdAp-0.6414+θgFAp≦0.02
22.8<νdAp≦35.0
The zoom lens according to claim 1 or 2, characterized in that:
前記正レンズApの屈折率の温度係数をdNdTApとし、前記正レンズApの焦点距離をfApとして、条件式
−1.5≦fAp/fLA≦−0.3
−1.0≦dn/dndTAp≦6.0
を満足することを特徴とする請求項3に記載のズームレンズ。
The conditional expression −1.5≦fAp/fLA≦−0.3, where dNdTAp is the temperature coefficient of the refractive index of the positive lens Ap and fAp is the focal length of the positive lens Ap.
−1.0≦dn/dndTAp≦6.0
The zoom lens according to claim 3, wherein
前記負レンズ群は、物体側から順に、負レンズ、前記正レンズAp、および負レンズから構成され、光軸に対して垂直な方向に成分を有する移動量をもって像の安定化のために移動可能であることを特徴とする請求項1乃至4のうちいずれか1項に記載のズームレンズ。 The negative lens group includes, in order from the object side, a negative lens, the positive lens Ap, and a negative lens, and is movable for stabilizing an image with a moving amount having a component in a direction perpendicular to the optical axis. The zoom lens according to any one of claims 1 to 4, wherein 前記負レンズAnは、前記負レンズ群のなかで最も物体側に配置されていることを特徴とする請求項1乃至5のうちいずれか1項に記載のズームレンズ。 The zoom lens according to any one of claims 1 to 5, wherein the negative lens An is arranged closest to the object side in the negative lens group. 前記正レンズ群の焦点距離をfLBとし、前記正レンズBpの焦点距離およびアッベ数をそれぞれfBpおよびνdBpとして、条件式
17.4≦νdBp≦30.0
0.2≦fBp/fLB≦1.0
を満足することを特徴とする請求項1乃至6のうちいずれか1項に記載のズームレンズ。
If the focal length of the positive lens group is fLB and the focal length and Abbe number of the positive lens Bp are fBp and νdBp, respectively, the conditional expression 17.4≦νdBp≦30.0
0.2≦fBp/fLB≦1.0
The zoom lens according to any one of claims 1 to 6, characterized in that:
請求項1乃至7のうちいずれか1項に記載のズームレンズと。
前記ズームレンズの像面に配された撮像素子と、
を有することを特徴とする撮像装置。
The zoom lens according to any one of claims 1 to 7.
An image pickup device arranged on the image plane of the zoom lens,
An image pickup apparatus comprising:
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