Zoom lens and imaging device

Abstract

The invention provides a zoom lens and an imaging device provided with the zoom lens. The zoom lens has a large image circle, a wide angle, a small structure and good optical performance. The zoom lens includes: a first lens group disposed closest to an object side and having a positive refractive power; a negative group disposed adjacent to the image side of the first lens group, comprising two or less lens groups, and having a negative refractive power as a whole; an N lens group disposed closer to the image side than the negative group and having a negative refractive power; a P lens group disposed closer to the image side than the negative group and having a positive refractive power; and a final lens group disposed at a position closest to the image side. When changing magnification, all intervals between adjacent lens groups change. The zoom lens satisfies a preset conditional expression.

Description

Technical Field

[0001] The technology of the present invention relates to a zoom lens and an imaging device. Background Art

[0002] Conventionally, as a zoom lens that can be used in an imaging device such as a cinema camera, a zoom lens described in Patent Document 1 listed below is known.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-004076

[0004] Zoom lenses are expected to have a large image circle, a wide angle, a compact structure, and good optical performance, and these requirements are increasing year by year. Summary of the Invention

[0005] The present invention provides a zoom lens and an imaging device equipped with the zoom lens. The zoom lens has a large image circle and a wide angle, a compact structure, and good optical performance.

[0006] The first embodiment of the present invention is a zoom lens comprising: a first lens group, which is arranged at a position closest to the object side and has positive optical focal length; a negative group, which is arranged adjacent to the image side of the first lens group and consists of two or less lens groups and has negative optical focal length as a whole; an N lens group, which is arranged at a position closer to the image side than the negative group and has negative optical focal length; a P lens group, which is arranged at a position closer to the image side than the negative group and has positive optical focal length; and a final lens group, which is arranged at a position closest to the image side, wherein when the magnification is changed, all intervals between adjacent lens groups change and satisfy the following conditional formula (1).

[0007] -6<fN / f1<-0.55(1)

[0008] Here, the focal length of the Nth lens group is denoted as fN, and the focal length of the first lens group is denoted as f1.

[0009] A second aspect of the present invention is the zoom lens according to the first aspect, wherein the first lens group is fixed relative to the image plane during zooming.

[0010] A third aspect of the present invention is the zoom lens according to the first aspect, wherein the final lens group is fixed relative to the image plane during zooming.

[0011] A fourth aspect of the present invention is the zoom lens according to the first aspect, wherein the P lens group is disposed adjacent to the image side of the N lens group, and the final lens group is disposed adjacent to the image side of the P lens group.

[0012] A fifth aspect of the present invention is the zoom lens according to the first aspect, wherein a portion of the first lens group moves along the optical axis during focusing.

[0013] According to the sixth embodiment of the present invention, in the zoom lens of the fifth embodiment, the first lens group includes at least sub-group 1a, sub-group 1b and sub-group 1c in sequence from the side closest to the object toward the image side. When focusing, the interval between sub-group 1a and sub-group 1b changes, and the interval between sub-group 1b and sub-group 1c changes.

[0014] According to the seventh embodiment of the present invention, in the zoom lens of the fifth embodiment, the first lens group includes sub-group 1a, sub-group 1b and sub-group 1c in sequence from the object side toward the image side. When focusing, sub-group 1a is fixed relative to the image plane, and sub-group 1b and sub-group 1c move in different trajectories.

[0015] According to an eighth aspect of the present invention, in the zoom lens of the first aspect, when the distance on the optical axis from the lens surface closest to the object to the paraxial entrance pupil position in a state in which the zoom lens is focused on an object at infinity at the wide-angle end is denoted by Denw, and the focal length of the zoom lens in a state in which the zoom lens is focused on an object at infinity at the wide-angle end is denoted by fw, conditional expression (2) expressed as follows is satisfied:

[0016] 1.2 <Denw / fw<8(2)。

[0017] A ninth aspect of the present invention is a zoom lens according to the first aspect, wherein, when the focal length of the negative lens group is fUN and the focal length of the N lens group is fN, the following conditional expression (3) is satisfied:

[0018] 0.118 <fUN / fN<0.25(3)。

[0019] A tenth aspect of the present invention is the zoom lens according to the first aspect, wherein the N lens group moves along a trajectory convex toward the object side when zooming from the wide-angle end to the telephoto end.

[0020] An eleventh aspect of the present invention is the zoom lens according to the first aspect, wherein the lens closest to the object side of the zoom lens is a negative lens, and the second lens from the object side of the zoom lens is a positive lens.

[0021] A twelfth aspect of the present invention is the zoom lens according to the first aspect, wherein the first lens group includes one negative lens and four or more positive lenses.

[0022] A thirteenth aspect of the present invention is the zoom lens according to the first aspect, wherein the first lens group includes a negative lens, a positive lens, and a positive lens in this order from the most object side toward the image side.

[0023] According to the fourteenth embodiment of the present invention, in the zoom lens of the first embodiment, when the longest air gap among the air gaps on the optical axis from the lens surface of the P lens group closest to the object side to the lens surface of the final lens group closest to the image side in a state of focusing on an object at infinity at the wide-angle end is set as the longest air gap, an EX group is arranged in a manner that can be inserted or removed, and the EX group is changed in a state where the focal length of the zoom lens is kept constant by being inserted into the optical path of the above-mentioned longest air gap.

[0024] A fifteenth aspect of the present invention is the zoom lens according to the fourteenth aspect, wherein the maximum image height is changed by inserting or removing the EX group.

[0025] According to a sixteenth aspect of the present invention, in the zoom lens of the fifth aspect, the first lens group includes at least a sub-group 1a and a sub-group 1b in order from the object side toward the image side, and when focusing is performed, the interval between the sub-group 1a and the sub-group 1b changes, and when the focal length of the sub-group 1a is set to f1a, the following conditional expression (4) is satisfied:

[0026] -0.85 <f1 / fla<0.15(4)。

[0027] According to a seventeenth aspect of the present invention, in the zoom lens of the first aspect, when the focal length of the negative group is set to fUN, the following conditional expression (5) is satisfied:

[0028] -0.4<fUN / f1<-0.09(5).

[0029] According to an eighteenth aspect of the present invention, in the zoom lens of the first aspect, when the distance on the optical axis from the lens surface closest to the object to the paraxial entrance pupil position in a state where the zoom lens is focused on an object at infinity at the wide-angle end is denoted by Denw, the following conditional expression (6) is satisfied:

[0030] 0.4 <Denw / f1<1.6 (6)。

[0031] A nineteenth aspect of the present invention is a zoom lens according to the first aspect, wherein, when the distance on the optical axis from the lens surface closest to the object of the first lens group to the paraxial entrance pupil position in a state in which the lens is focused on an object at infinity at the wide-angle end is denoted by Denw, and the maximum image height in a state in which the lens is focused on an object at infinity at the wide-angle end is denoted by IHw, conditional expression (7) expressed as follows is satisfied:

[0032] 3.4 <Denw / IHw<7.5(7)。

[0033] According to a 20th aspect of the present invention, in the zoom lens of the first aspect, when the displacement amount of the N lens group in the optical axis direction when zooming from the wide-angle end to the telephoto end is MovN, the focal length of the zoom lens in a state focused on an object at infinity at the telephoto end is ft, the focal length of the zoom lens in a state focused on an object at infinity at the wide-angle end is fw, and the sign of the displacement amount is negative when the N lens group moves toward the object side and positive when the N lens group moves toward the image side, the conditional expression (8) expressed as follows is satisfied:

[0034] -0.4<MovN / (f1 / log(ft / fw))<0.1 (8).

[0035] According to a 21st aspect of the present invention, in the zoom lens of the first aspect, when the back focus at the air-converted distance in a state in which the lens is focused on an object at infinity at the wide-angle end is set to Bfw and the maximum image height in a state in which the lens is focused on an object at infinity at the wide-angle end is set to IHw, conditional expression (9) expressed as follows is satisfied:

[0036] 1.9 <Bfw / IHw<6(9)。

[0037] According to a 22nd aspect of the present invention, in the zoom lens of the 6th aspect, the 1a sub-group includes an aspherical lens having at least one surface whose absolute value of the curvature radius at the position of the maximum effective diameter is larger than the absolute value of the paraxial curvature radius.

[0038] According to a 23rd aspect of the present invention, in the zoom lens of the 6th aspect, the 1c sub-group includes an aspherical lens having at least one surface whose absolute value of the curvature radius at the position of the maximum effective diameter is larger than the absolute value of the paraxial curvature radius.

[0039] According to a 24th aspect of the present invention, in the zoom lens of the 1st aspect, the negative group includes an aspherical lens having at least one surface whose absolute value of the curvature radius at the position of the maximum effective diameter is smaller than the absolute value of the paraxial curvature radius.

[0040] According to a 25th aspect of the present invention, in the zoom lens of the 1st aspect, the P lens group includes an aspherical lens having at least one surface whose absolute value of the curvature radius at the position of the maximum effective diameter is larger than the absolute value of the paraxial curvature radius.

[0041] The twenty-sixth aspect of the present invention is a zoom lens according to the first aspect, wherein, when the longest air gap among the air gaps on the optical axis included between the lens surface closest to the object side of the P lens group and the lens surface closest to the image side of the final lens group in a state in which the zoom lens is focused on an object at infinity at the wide-angle end is defined as the longest air gap, and when the Petzval sum from the lens surface closest to the object side of the first lens group to the object-side surface constituting the longest air gap is defined as PF, and when the maximum image height in a state in which the zoom lens is focused on an object at infinity at the wide-angle end is defined as IHw, the zoom lens satisfies the following conditional expression (10):

[0042] 0.12 <PF×IHw<0.25(10)。

[0043] A 27th aspect of the present invention is an imaging device including the zoom lens according to any one of the 1st to 26th aspects.

[0044] In addition, the terms "including..." and "consisting of..." in this specification mean that in addition to the listed constituent elements, the system may also include lenses that do not essentially have optical focal length, as well as optical elements other than lenses such as apertures, filters, and cover glasses, as well as mechanical parts such as lens flanges, lens barrels, imaging elements, and hand-shake correction mechanisms.

[0045] Throughout this specification, "a group having positive optical power" means that the entire group has positive optical power. Similarly, "a group having negative optical power" means that the entire group has negative optical power. Throughout this specification, "first lens group," "lens group," "N lens group," "P lens group," "final lens group," and "focusing group" are not limited to structures consisting of multiple lenses and may also consist of a single lens.

[0046] A composite aspheric lens (a lens (e.g., a spherical lens) and an aspheric film formed on the lens are integrated, functioning as a single aspheric lens) is used as a single lens and is not considered a cemented lens. The radius of curvature, the sign of the optical power, and the surface shape of the lens including an aspheric surface are those of the paraxial region unless otherwise specified. The sign of the radius of curvature is positive for the surface facing the object, and negative for the surface facing the image.

[0047] The "back focus in air-equivalent distance" is the air-equivalent distance on the optical axis from the lens surface closest to the image side of the zoom lens to the image plane. The "focal length" used in conditional expressions refers to the paraxial focal length. Unless otherwise specified, the "distance on the optical axis" used in conditional expressions refers to the geometric distance. Unless otherwise specified, the values ​​used in conditional expressions are based on the d-line when focusing on an object at infinity.

[0048] Effects of the Invention

[0049] According to the present invention, it is possible to provide a zoom lens having a large image circle and a wide angle, a compact structure, and excellent optical performance, and an imaging device including the zoom lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a cross-sectional view showing the structure of a zoom lens according to one embodiment corresponding to the zoom lens of Example 1 and a diagram showing a movement trajectory.

[0051] Figure 2 yes Figure 1 1 is a cross-sectional view of the structure of the zoom lens and is a diagram for explaining symbols of conditional expressions.

[0052] Figure 3 It is a diagram for explaining the effective diameter and the position of the maximum effective diameter.

[0053] Figure 4 Is to insert or remove Figure 1 1 is a diagram of the EX group in the zoom lens, and is a diagram for explaining symbols of conditional expressions.

[0054] Figure 5 This is a cross-sectional view showing the structure of the zoom lens of Example 1-1.

[0055] Figure 6 These are diagrams showing various aberrations of the zoom lens of Example 1.

[0056] Figure 7 These are diagrams showing various aberrations of the zoom lens of Example 1-1.

[0057] Figure 8 It is a cross-sectional view showing the structure of the zoom lens of Example 2 and a diagram showing a movement trajectory.

[0058] Figure 9 These are diagrams showing various aberrations of the zoom lens of Example 2.

[0059] Figure 10 It is a cross-sectional view showing the structure of the zoom lens of Example 3 and a diagram showing a movement trajectory.

[0060] Figure 11 These are diagrams showing various aberrations of the zoom lens of Example 3.

[0061] Figure 12 It is a cross-sectional view showing the structure of the zoom lens of Example 4 and a diagram showing a movement trajectory.

[0062] Figure 13 These are diagrams showing various aberrations of the zoom lens of Example 4.

[0063] Figure 14 It is a cross-sectional view showing the structure of the zoom lens of Example 5 and a diagram showing a movement trajectory.

[0064] Figure 15 These are diagrams showing various aberrations of the zoom lens of Example 5.

[0065] Figure 16 It is a cross-sectional view showing the structure of the zoom lens of Example 6 and a diagram showing a movement trajectory.

[0066] Figure 17 These are diagrams showing various aberrations of the zoom lens of Example 6.

[0067] Figure 18 It is a cross-sectional view showing the structure of the zoom lens of Example 7 and a diagram showing a movement trajectory.

[0068] Figure 19 These are diagrams showing various aberrations of the zoom lens of Example 7.

[0069] Figure 20 It is a cross-sectional view showing the structure of the zoom lens of Example 8 and a diagram showing a movement trajectory.

[0070] Figure 21 These are diagrams showing various aberrations of the zoom lens of Example 8.

[0071] Figure 22 It is a cross-sectional view showing the structure of the zoom lens of Example 9 and a diagram showing a movement trajectory.

[0072] Figure 23 These are diagrams showing various aberrations of the zoom lens of Example 9.

[0073] Figure 24 It is a cross-sectional view showing the structure of the zoom lens of Example 10 and a diagram showing a movement trajectory.

[0074] Figure 25 These are diagrams showing various aberrations of the zoom lens of Example 10.

[0075] Figure 26 A cross-sectional view showing the structure of the zoom lens of Example 11 and a diagram showing a movement trajectory.

[0076] Figure 27 These are diagrams showing various aberrations of the zoom lens of Example 11.

[0077] Figure 28 It is a cross-sectional view showing the structure of the zoom lens of Example 12 and a diagram showing a movement trajectory.

[0078] Figure 29 These are diagrams showing various aberrations of the zoom lens of Example 12.

[0079] Figure 30A cross-sectional view showing the structure of the zoom lens of Example 13 and a diagram showing a movement trajectory.

[0080] Figure 31 These are diagrams showing various aberrations of the zoom lens of Example 13.

[0081] Figure 32 This is a cross-sectional view showing the structure of the zoom lens of Example 13-1.

[0082] Figure 33 These are diagrams showing various aberrations of the zoom lens of Example 13-1.

[0083] Figure 34 It is a cross-sectional view showing the structure of the zoom lens of Example 14 and a diagram showing a movement trajectory.

[0084] Figure 35 These are diagrams showing various aberrations of the zoom lens of Example 14.

[0085] Figure 36 This is a cross-sectional view showing the structure of the zoom lens of Example 14-1.

[0086] Figure 37 These are diagrams showing various aberrations of the zoom lens of Example 14-1.

[0087] Figure 38 It is a cross-sectional view showing the structure of the zoom lens of Example 15 and a diagram showing a movement trajectory.

[0088] Figure 39 These are diagrams showing various aberrations of the zoom lens of Example 15.

[0089] Figure 40 This is a cross-sectional view showing the structure of the zoom lens of Example 15-1.

[0090] Figure 41 These are diagrams showing various aberrations of the zoom lens of Example 15-1.

[0091] Figure 42 It is a cross-sectional view showing the structure of the zoom lens of Example 16 and a diagram showing a movement trajectory.

[0092] Figure 43 These are diagrams showing various aberrations of the zoom lens of Example 16.

[0093] Figure 44 This is a cross-sectional view showing the structure of the zoom lens of Example 16-1.

[0094] Figure 45 These are diagrams showing various aberrations of the zoom lens of Example 16-1.

[0095] Figure 46 It is a cross-sectional view showing the structure of the zoom lens of Example 17 and a diagram showing a movement trajectory.

[0096] Figure 47 These are diagrams showing various aberrations of the zoom lens of Example 17.

[0097] Figure 48 It is a cross-sectional view showing the structure of the zoom lens of Example 18 and a diagram showing a movement trajectory.

[0098] Figure 49 These are diagrams showing various aberrations of the zoom lens of Example 18.

[0099] Figure 50 It is a cross-sectional view showing the structure of the zoom lens of Example 19 and a diagram showing a movement trajectory.

[0100] Figure 51 These are diagrams showing various aberrations of the zoom lens of Example 19.

[0101] Figure 52 This is a cross-sectional view showing the structure of the zoom lens of Example 19-1.

[0102] Figure 53 These are diagrams showing various aberrations of the zoom lens of Example 19-1.

[0103] Figure 54 This is a schematic diagram of the configuration of an imaging device according to one embodiment.

[0104] Explanation of symbols

[0105] 1-zoom lens, 2-filter, 3-imaging element, 4-signal processing unit, 5-magnification control unit, 6-focus control unit, 100-camera device, D1a-thickness, D1b-thickness, DAmax-maximum air gap, Denw-distance, DEX-thickness, Dexw-distance, DG1-thickness, ED-effective diameter, EX-EX group, G1-1st lens group, G1a-1a sub-group, G1b-1b sub-group, G1c-1c sub-group, G1d-1d sub-group, G2-2nd lens group, G3-3rd lens group, GE-final lens Lens group, GEE-final lens group, GN-N lens group, GP-P lens group, IHEw-maximum image height, IHw-maximum image height, Lx-lens, MovN-displacement, MovP-displacement, PP-optical component, Px-position, Sim-image plane, St-aperture stop, Stb-sub-stop, tL1-center thickness, tN1-center thickness, UN-negative group, Xa-on-axis beam, Xb-off-axis beam, Xb1-ray, Z-optical axis, ωEt-maximum half angle of view, ωEw-maximum half angle of view, ωt-maximum half angle of view, ωw-maximum half angle of view. DETAILED DESCRIPTION

[0106] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0107] exist Figure 1 , there is shown a structure of a zoom lens according to one embodiment of the present invention, a cross-sectional view of a light beam, and a moving trajectory. Figure 2 In the Figure 1 A cross-sectional view of the structure of a zoom lens. Figure 1 and Figure 2 In the figure, the focus is on an object at infinity, with the left side being the object side and the right side being the image side. Figure 1 and Figure 2 In FIG, the upper section labeled "Wide" shows the wide-angle end state, and the lower section labeled "Tele" shows the telephoto end state. Figure 1 In FIG. 1 , as light beams, an on-axis light beam and a light beam with a maximum half angle of view ωw at the wide-angle end, and an on-axis light beam and a light beam with a maximum half angle of view ωt at the telephoto end are shown. Figure 1 and Figure 2 The example shown corresponds to the zoom lens of Example 1 described later. Figure 1 Explain and refer to Figure 2 .

[0108] exist Figure 1 , assuming a zoom lens is used in an imaging device, shows an example in which a parallel-plate-shaped optical component PP is disposed between the zoom lens and the image plane Sim. Optical component PP is assumed to be various filters and / or cover glass. These filters include low-pass filters, infrared cutoff filters, and / or filters that cut off specific wavelength regions. Optical component PP does not have optical power. The imaging device can also be configured without optical component PP.

[0109] The zoom lens of the present invention comprises: a first lens group G1, which is arranged at a position closest to the object side and has positive focal power; a negative lens group UN, which is arranged adjacent to the image side of the first lens group G1 and has negative focal power as a whole; an N lens group GN, which is arranged at a position closer to the image side than the negative lens group UN and has negative focal power; a P lens group GP, which is arranged at a position closer to the image side than the negative lens group UN and has positive focal power; and a final lens group GE, which is arranged at a position closest to the image side. The negative lens group UN is composed of no more than two lens groups. When zooming, all intervals between adjacent lens groups change. The above structure can achieve a wider image circle while maintaining the zoom ratio, and is conducive to achieving miniaturization while ensuring a wide viewing angle.

[0110] In addition, in this specification, a group whose interval in the optical axis direction with adjacent groups changes when the magnification is changed is referred to as one lens group. When the magnification is changed, the interval between adjacent lenses in one lens group does not change. Each "lens group" included in the "first lens group G1", "N lens group GN", "P lens group GP", "final lens group GE" and negative group UN in this specification is a component of the zoom lens, and is a part including at least one lens, and the at least one lens is a lens divided by an air gap that changes when the magnification is changed. When the magnification is changed, each lens group is moved or fixed as a unit, and the interval between the lenses in each lens group does not change. In addition, the "lens group" may also include components other than lenses that do not have optical focal length, such as aperture stop St.

[0111] As an example, Figure 1 The zoom lens includes, from the object side toward the image side, a first lens group G1, a negative lens group UN consisting of one lens group, an N lens group GN, a P lens group GP, and a final lens group GE.

[0112] exist Figure 1 In the example, each group is constructed as follows. The first lens group G1 includes a negative lens, a positive lens, a positive lens, a positive lens, a positive lens and a positive lens in sequence from the object side to the image side. The negative group UN includes a negative lens, a negative lens, a positive lens and a negative lens in sequence from the object side to the image side. The N lens group GN includes a positive lens and a negative lens in sequence from the object side to the image side. The P lens group GP includes a positive lens, a negative lens and a positive lens in sequence from the object side to the image side. The final lens group GE includes an aperture stop St, a positive lens, a negative lens, a positive lens, a positive lens, a negative lens, a positive lens, a negative lens, a positive lens and a positive lens in sequence from the object side to the image side. In addition, Figure 1 The aperture stop St does not indicate the shape or size, but rather the position in the direction of the optical axis.

[0113] exist Figure 1 In the example of , when zooming, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, the N lens group GN and the P lens group GP are moved along the optical axis Z by changing the intervals between the adjacent lens groups. Figure 1 In FIG. 1 , the solid arrows between the upper and lower sections show the approximate movement loci of each lens group when zooming from the wide-angle end to the telephoto end.

[0114] In the zoom lens of the present invention, it is preferable that the first lens group G1 is fixed relative to the image plane Sim during zooming. In this case, the movement of the center of gravity during zooming can be suppressed.

[0115] Furthermore, when zooming, it is preferable that the final lens group GE is fixed relative to the image plane Sim. In this case, it is easy to suppress the fluctuation of the F value when zooming.

[0116] When zooming from the wide-angle end to the telephoto end, it is preferred that the N lens group GN moves in a trajectory that is convex toward the object side. In this case, it is beneficial to suppress aberrations in the intermediate focal length state. As an example, Figure 1 The solid arrow of the movement trajectory of the N lens group GN becomes a curve with a convex shape toward the object side.

[0117] In the zoom lens of the present invention, the lens closest to the object side of the zoom lens is preferably a negative lens. This helps suppress lateral chromatic aberration. Furthermore, the second lens from the object side of the zoom lens is preferably a positive lens. This helps suppress axial chromatic aberration.

[0118] The first lens group G1 preferably includes a negative lens, a positive lens, and a positive lens in this order from the object side toward the image side. In this case, it is advantageous in suppressing longitudinal chromatic aberration and lateral chromatic aberration.

[0119] The first lens group G1 preferably includes one negative lens and four or more positive lenses. In this case, it is advantageous to suppress chromatic aberration at the telephoto end.

[0120] The negative lens group UN preferably includes an aspherical lens having at least one surface whose absolute value of the curvature radius at the position of the maximum effective diameter is smaller than the absolute value of the paraxial curvature radius. In this case, astigmatism can be suppressed advantageously.

[0121] As an illustration, in Figure 3 An example of the position of the maximum effective diameter is shown in FIG. Figure 3 In the image, the left side is the object side and the right side is the image side. Figure 3 In FIG, the on-axis beam Xa and the off-axis beam Xb passing through the lens Lx are shown. Figure 3 In the example, the upper ray of the off-axis beam Xb, that is, the ray Xb1, is the ray that passes through the outermost side. In this specification, the distance from the intersection of the ray that passes through the outermost side of the ray that enters the lens surface from the object side and exits to the image side and its lens surface to the optical axis Z is set as the "effective radius" of the lens surface. In addition, twice the effective radius is set as the "effective diameter". The "outside" mentioned here refers to the radial outside with the optical axis Z as the center, that is, the side away from the optical axis Z. In Figure 3 In the example, the effective diameter ED of the object-side surface of lens Lx is twice the distance from the intersection of the object-side surface of lens Lx and the light ray Xb1 to the optical axis Z. The position Px where the outermost light ray intersects the lens surface is the position of the maximum effective diameter. Figure 3In the example, the upper ray of the off-axis beam Xb is the ray that passes through the outermost side. However, which ray becomes the ray that passes through the outermost side depends on the optical system. Moreover, the ray that passes through the outermost side is determined by considering the entire zoom range.

[0122] In the zoom lens of the present invention, the N lens group GN preferably includes a positive lens and a negative lens in order from the object side toward the image side. In this case, it is advantageous to suppress the change of axial chromatic aberration during zooming.

[0123] It is preferable to arrange the P lens group GP adjacent to the image side of the N lens group GN. In this case, it is advantageous for widening the angle of view.

[0124] The lens surface closest to the image side of the P lens group GP can be formed as a concave surface. In this case, it is advantageous to suppress the fluctuation of spherical aberration during zooming.

[0125] The P lens group GP preferably includes an aspherical lens having at least one surface having a curvature radius at a position of maximum effective diameter that is greater in absolute value than the absolute value of the paraxial curvature radius. In this case, it is advantageous to suppress variations in spherical aberration during zooming.

[0126] It is preferable to arrange the final lens group GE adjacent to the image side of the P lens group GP. In this case, it is advantageous for miniaturization.

[0127] The lens closest to the image side of the final lens group GE can be configured as a single lens with positive refractive power. In this case, a lens system with a smaller F value can be obtained. In this specification, "single lens" means a single lens that is not bonded.

[0128] When focusing, a portion of the first lens group G1 can be configured to move along the optical axis Z. Specifically, focusing can be achieved by moving a portion of the first lens group G1 along the optical axis Z. In this case, when photographing objects at a limited distance, fluctuations in the focus position caused by zooming can be suppressed. Hereinafter, the group that moves along the optical axis Z during focusing is referred to as the focusing group. Focusing is achieved by moving the focusing group.

[0129] The first lens group G1 can be constructed to include at least sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c, sequentially from the object side toward the image side. During focusing, the spacing between sub-group 1a G1a and sub-group 1b G1b varies, and the spacing between sub-group 1b G1b and sub-group 1c G1c varies. This advantageously suppresses aberration fluctuations during focusing.

[0130] When the first lens group G1 includes at least the aforementioned sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c, sub-group 1a G1a preferably includes an aspherical lens having at least one surface having a curvature radius at the position of maximum effective diameter that is larger in absolute value than the absolute value of the paraxial curvature radius. This advantageously suppresses spherical aberration at the telephoto end.

[0131] When the first lens group G1 includes at least the aforementioned sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c, sub-group 1c G1c preferably includes an aspherical lens having at least one surface having a curvature radius at the position of maximum effective diameter that is greater in absolute value than the absolute value of the paraxial curvature radius. This advantageously suppresses fluctuations in spherical aberration during focusing.

[0132] The first lens group G1 can be constructed to include, in order from the object side toward the image side, subgroup 1a G1a, subgroup 1b G1b, and subgroup 1c G1c. During focusing, subgroup 1a G1a is fixed relative to the image plane Sim, while subgroup 1b G1b and subgroup 1c G1c move along different paths. By configuring the first lens group G1 to consist of three subgroups divided at intervals that vary during focusing, this facilitates a simplified drive mechanism while suppressing aberration fluctuations during focusing. Furthermore, by having subgroup 1b G1b and subgroup 1c G1c move along different paths during focusing, aberration fluctuations during focusing are further suppressed. The phrases "subgroup 1b G1b and subgroup 1c G1c move along different paths" and "subgroup 1b G1b and subgroup 1c G1c move by varying the intervals between them" are synonymous.

[0133] When the first lens group G1 includes the aforementioned sub-group G1a 1a, sub-group G1b 1b, and sub-group G1c 1c, the sub-group G1b 1b, when focused on the closest object, is positioned closer to the object than the sub-group G1b 1b, when focused on an object at infinity. In this case, focusing on a close object is further improved.

[0134] Alternatively, when the first lens group G1 includes the aforementioned sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c, the sub-group 1b G1b, when focused on the closest object, is positioned closer to the image than the sub-group 1b G1b, when focused on an object at infinity. This advantageously reduces fluctuations in the angle of view during focusing.

[0135] As an example, Figure 1In the example, the first lens group G1 includes, from the object side toward the image side, the 1a subgroup G1a, the 1b subgroup G1b, and the 1c subgroup G1c. When focusing from an object at infinity to the closest object, the 1a subgroup G1a is fixed relative to the image plane Sim, while the 1b subgroup G1b and the 1c subgroup G1c move toward the object side along different trajectories. That is, Figure 1 The zoom lens in the example includes two focusing groups, the 1b subgroup G1b and the 1c subgroup G1c. When focusing, these two focusing groups change the distance between each other and move toward the object. Figure 1 In the figure below, an arrow indicating the direction of focus movement from an object at infinity to the closest object is placed under each focus group. Each focus group functions in the entire zoom range, including the wide-angle end state, but Figure 1 In order to avoid complicating the diagram, the arrows are only included in the lower diagram.

[0136] Furthermore, in the zoom lens of the present invention, as shown in the embodiments described below, the first lens group G1 can be configured to include, in order from the object side toward the image side, a sub-group 1a G1a, a sub-group 1b G1b, a sub-group 1c G1c, and a sub-group 1d G1d. During focusing, the interval between the sub-group 1a G1a and the sub-group 1b G1b changes, the interval between the sub-group 1b G1b and the sub-group 1c G1c changes, and the interval between the sub-group 1c G1c and the sub-group 1d G1d changes. This advantageously suppresses aberration fluctuations during focusing.

[0137] The first lens group G1 can be configured to include the aforementioned sub-group 1a G1a, sub-group 1b G1b, sub-group 1c G1c, and sub-group 1d G1d. During focusing, sub-groups 1a G1a and 1c G1c are fixed relative to the image plane Sim, while sub-groups 1b G1b and 1d G1d move along different trajectories. This configuration is advantageous in simplifying the drive mechanism while suppressing aberration fluctuations during focusing.

[0138] Alternatively, the first lens group G1 may be configured to include the aforementioned sub-group 1a G1a, sub-group 1b G1b, sub-group 1c G1c, and sub-group 1d G1d. During focusing, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b, sub-group 1c G1c, and sub-group 1d G1d move along different trajectories. This advantageously suppresses aberration fluctuations during focusing.

[0139] When the first lens group G1 includes the aforementioned sub-group 1a G1a, sub-group 1b G1b, sub-group 1c G1c, and sub-group 1d G1d, the sub-group 1b G1b, when focused on the closest object, is positioned closer to the image than the sub-group 1b G1b, when focused on an object at infinity. This advantageously suppresses fluctuations in the angle of view during focusing.

[0140] Next, we will describe preferred and achievable configurations related to the conditional expressions of the zoom lens of the present invention. To avoid redundancy, the following description of the conditional expressions will use the same reference numerals for identical definitions, and any duplicated descriptions will be omitted. Furthermore, to avoid redundancy, the "zoom lens of the present invention" will also be referred to simply as the "zoom lens."

[0141] When the focal length of the N lens group GN is set to fN and the focal length of the first lens group G1 is set to f1, the zoom lens preferably satisfies the following conditional expression (1). By preventing the corresponding value of conditional expression (1) from falling below the lower limit, the optical power of the first lens group G1 can be suppressed, thereby facilitating suppression of aberration fluctuations during zooming. By preventing the corresponding value of conditional expression (1) from falling above the upper limit, the optical power of the N lens group GN can be suppressed, thereby facilitating suppression of aberration fluctuations during zooming.

[0142] -6 <fN / f1<-0.55(1)

[0143] In order to obtain better characteristics, the lower limit of conditional expression (1) is more preferably -3, further preferably -2.5, further preferably -2, and further preferably -1.75. In order to obtain better characteristics, the upper limit of conditional expression (1) is more preferably -1.07, further preferably -1.08, further preferably -1.09, and further preferably -1.1.

[0144] The zoom lens preferably satisfies the following conditional expression (2). Here, the distance on the optical axis from the lens surface closest to the object of the first lens group G1 in the state of focusing on an infinitely distant object at the wide-angle end to the paraxial entrance pupil position is set as Denw. The focal length of the zoom lens in the state of focusing on an infinitely distant object at the wide-angle end is set as fw. As an example, Figure 4 The above distance Denw is shown in FIG. Figure 4 In the Figure 1The structure of the zoom lens and the cross-sectional view of the light beam in the state of focusing on an object at infinity at the wide-angle end. By preventing the corresponding value of conditional expression (2) from becoming less than the lower limit value, the distance on the optical axis from the lens surface of the first lens group G1 closest to the object side to the paraxial entrance pupil position on the wide-angle side can be extended, thereby facilitating the suppression of changes in field curvature when zooming. By preventing the corresponding value of conditional expression (2) from becoming more than the upper limit value, the distance on the optical axis from the lens surface of the first lens group G1 closest to the object side to the paraxial entrance pupil position on the wide-angle side can be shortened, thereby facilitating widening of the angle.

[0145] 1.2 <Denw / fw<8 (2)

[0146] In order to obtain better characteristics, the lower limit of conditional expression (2) is more preferably set to 2.7, further preferably 2.75, further preferably 2.8, and further preferably 2.85. In order to obtain better characteristics, the upper limit of conditional expression (2) is more preferably set to 4, further preferably 3.8, further preferably 3.6, and further preferably 3.4.

[0147] When the focal length of the negative lens group UN is set to fUN and the focal length of the N lens group GN is set to fN, the zoom lens preferably satisfies the following conditional expression (3). By preventing the corresponding value of conditional expression (3) from falling below the lower limit, the optical power of the negative lens group UN can be suppressed, thereby facilitating suppression of aberration fluctuations during zooming. By preventing the corresponding value of conditional expression (3) from falling above the upper limit, the optical power of the N lens group GN can be suppressed, thereby facilitating suppression of aberration fluctuations during zooming.

[0148] 0.118 <fUN / fN<0.25(3)

[0149] To obtain better characteristics, the lower limit of conditional expression (3) is more preferably set to 0.125, further preferably 0.133, and further preferably 0.143. To obtain better characteristics, the upper limit of conditional expression (3) is more preferably set to 0.22, further preferably 0.2, and further preferably 0.19.

[0150] In the following structure, the zoom lens preferably satisfies the following conditional expression (4), wherein the first lens group G1 includes at least the 1a subgroup G1a and the 1b subgroup G1b in sequence from the object side toward the image side, and the distance between the 1a subgroup G1a and the 1b subgroup G1b changes during focusing. Here, the focal length of the 1a subgroup G1a is set to fla. By preventing the corresponding value of the conditional expression (4) from becoming below the lower limit, the divergence of the on-axis light beam based on the 1a subgroup G1a can be reduced, thereby facilitating a reduction in the diameter of the 1b subgroup G1b. By preventing the corresponding value of the conditional expression (4) from becoming above the upper limit, the optical power of the 1a subgroup G1a can be weakened, thereby enhancing the positive optical power on the image side through the 1b subgroup G1b and the 1b subgroup G1b, thereby reducing the amount of distance change during focusing, thereby facilitating a reduction in the total length of the lens system.

[0151] -0.85 <f] / f]a<0.15(4)

[0152] To obtain better characteristics, the lower limit of conditional expression (4) is more preferably -0.4, further preferably -0.1, and further preferably -0.008. To obtain better characteristics, the upper limit of conditional expression (4) is more preferably 0.1, further preferably 0.08, and further preferably 0.048.

[0153] The zoom lens preferably satisfies the following conditional expression (5). By preventing the corresponding value of conditional expression (5) from falling below the lower limit, the optical power of the negative lens group UN can be enhanced, thereby further reducing the amount of movement of the negative lens group UN during zooming, which contributes to shortening the overall length of the lens system. By preventing the corresponding value of conditional expression (5) from falling above the upper limit, the optical power of the first lens group G1 can be enhanced, thereby contributing to a smaller diameter and lighter weight of the negative lens group UN.

[0154] -0.4 <fUN / f1<-0.09(5)

[0155] To obtain better characteristics, the lower limit of conditional expression (5) is more preferably -0.33, further preferably -0.28, and further preferably -0.245. To obtain better characteristics, the upper limit of conditional expression (5) is more preferably -0.12, further preferably -0.16, and further preferably -0.19.

[0156] The zoom lens preferably satisfies the following conditional expression (6). By preventing the corresponding value of conditional expression (6) from falling below the lower limit, the optical power of the first lens group G1 can be increased, thereby contributing to a reduction in the total length of the lens system. By preventing the corresponding value of conditional expression (6) from falling above the upper limit, the entrance pupil position can be positioned closer to the object side, thereby contributing to a reduction in the diameter of the first lens group G1.

[0157] 0.4 <Denw / f1<1.6 (6)

[0158] To obtain better characteristics, the lower limit of conditional expression (6) is more preferably set to 0.5, further preferably 0.6, and further preferably 0.67. To obtain better characteristics, the upper limit of conditional expression (6) is more preferably set to 1.4, further preferably 1.2, and further preferably 1.

[0159] The zoom lens preferably satisfies the following conditional expression (7). Here, the maximum image height when focusing on an object at infinity at the wide-angle end is set to IHw. As an example, Figure 1 The maximum image height IHw is shown in FIG. By preventing the corresponding value of conditional expression (7) from falling below the lower limit, the distance on the optical axis from the lens surface closest to the object side of the first lens group G1 to the paraxial entrance pupil position on the wide-angle side can be extended, thereby advantageously suppressing fluctuations in field curvature during zooming. By preventing the corresponding value of conditional expression (7) from falling above the upper limit, the distance on the optical axis from the lens surface closest to the object side of the first lens group G1 to the paraxial entrance pupil position on the wide-angle side can be shortened, thereby advantageously contributing to widening of the angle of view.

[0160] 3.4 <Denw / IHw<7.5(7)

[0161] To obtain better characteristics, the lower limit of conditional expression (7) is more preferably set to 3.7, further preferably to 3.9, and further preferably to 4.2. To obtain better characteristics, the upper limit of conditional expression (7) is more preferably set to 6.2, further preferably to 5.6, and further preferably to 5.59.

[0162] The zoom lens preferably satisfies the following conditional formula (8). Here, the displacement amount of the N lens group GN in the optical axis direction when changing the magnification from the wide-angle end to the telephoto end is set to MovN. The focal length of the zoom lens in the state of focusing on an infinitely distant object at the telephoto end is set to ft. The focal length of the zoom lens in the state of focusing on an infinitely distant object at the wide-angle end is set to fw. In addition, the sign of the above-mentioned displacement amount MovN is set to negative when the N lens group GN moves toward the object side, and is set to positive when the N lens group GN moves toward the image side. As an example, in Figure 2The displacement MovN is shown in FIG. The displacement MovN is the difference between the position of the N lens group GN in the optical axis direction at the wide-angle end and the position of the N lens group GN in the optical axis direction at the telephoto end, and the reference of each position is the position of the image plane Sim. By preventing the corresponding value of the conditional expression (8) from becoming below the lower limit, it is possible to ensure space for the negative group UN to move toward the object side at the telephoto end, which is beneficial for high zoom ratio. By preventing the corresponding value of the conditional expression (8) from becoming above the upper limit, it is possible to position the N lens group GN closer to the object side at the telephoto end, which is beneficial for correcting various off-axis aberrations at the telephoto end.

[0163] -0.4<MovN / (f1 / log(ft / fw))<0.1(8)

[0164] To obtain better characteristics, the lower limit of conditional expression (8) is more preferably -0.35, further preferably -0.3, and further preferably -0.24. To obtain better characteristics, the upper limit of conditional expression (8) is more preferably 0.05, further preferably 0.01, and further preferably -0.03.

[0165] The zoom lens preferably satisfies the following conditional expression (9). Here, the back focus at the air-converted distance when focusing on an object at infinity at the wide-angle end is set to Bfw. Preventing the corresponding value of conditional expression (9) from falling below the lower limit helps ensure the amount of peripheral light. Preventing the corresponding value of conditional expression (9) from exceeding the upper limit helps shorten the total length of the lens system.

[0166] 1.9 <Bfw / IHw<6(9)

[0167] To obtain better characteristics, the lower limit of conditional expression (9) is more preferably set to 2.2, further preferably to 2.45, and further preferably to 2.75. To obtain better characteristics, the upper limit of conditional expression (9) is more preferably set to 5, further preferably to 4.4, and further preferably to 3.9.

[0168] The zoom lens preferably satisfies the following conditional expression (10). Here, the longest air gap among the air gaps on the optical axis from the lens surface closest to the object side of the P lens group GP to the lens surface closest to the image side of the final lens group GE in the state of focusing on an infinite object at the wide-angle end is set as the longest air gap DAmax. The Petzval sum from the lens surface closest to the object side of the first lens group G1 to the object side surface constituting the above-mentioned longest air gap DAmax is set as PF. As an example, in Figure 4 The longest air gap DAmax mentioned above is shown in FIG. Figure 4In the example, the longest air gap DAmax is formed by the image-side surface of the second lens from the object side of the final lens group and the object-side surface of the third lens from the object side of the final lens group. By preventing the corresponding value of conditional expression (10) from becoming less than the lower limit, it is possible to suppress excessive correction of field curvature. By preventing the corresponding value of conditional expression (10) from becoming more than the upper limit, it is advantageous to suppress field curvature that occurs closer to the object side than the image-side surface that forms the aforementioned longest air gap DAmax.

[0169] 0.12 <PF×IHw<0.25(10)

[0170] To obtain better characteristics, the lower limit of conditional expression (10) is more preferably set to 0.13, further preferably 0.149, and further preferably 0.165. To obtain better characteristics, the upper limit of conditional expression (10) is more preferably set to 0.21, further preferably 0.203, and further preferably 0.185.

[0171] In addition, Petzval and PZ from the Sa-th surface to the Sb-th surface are defined by the following equations.

[0172] [Formula 1]

[0173]

[0174] in,

[0175] Ri: paraxial curvature radius of the i-th surface

[0176] Nei: refractive index of the medium on the incident side of the i-th surface

[0177] Noi: refractive index of the medium on the emission side of the i-th surface.

[0178] When the maximum half angle of view when focusing on an object at infinity at the wide-angle end is ωt, the zoom lens preferably satisfies the following conditional expression (11). Here, the unit of ωw is degrees. Preventing the corresponding value of conditional expression (11) from falling below the lower limit is advantageous for widening the angle of view. Preventing the corresponding value of conditional expression (11) from falling above the upper limit is advantageous for miniaturization.

[0179] 21<ωw<55(11)

[0180] In order to obtain better characteristics, the lower limit of conditional expression (11) is more preferably set to 24, further preferably 27, and further preferably 30. In order to obtain better characteristics, the upper limit of conditional expression (11) is more preferably set to 50, further preferably 45, and further preferably 41.

[0181] The zoom lens preferably satisfies the following conditional expression (12). Preventing the corresponding value of conditional expression (12) from becoming below the lower limit value is conducive to suppressing aberration changes during zooming. Preventing the corresponding value of conditional expression (12) from becoming above the upper limit value is conducive to achieving a high zoom ratio.

[0182] 0.06 <fw / ft<0.13(12)

[0183] In order to obtain better characteristics, the lower limit of conditional expression (12) is more preferably set to 0.065, further preferably 0.07, and further preferably 0.075. In order to obtain better characteristics, the upper limit of conditional expression (12) is more preferably set to 0.12, further preferably 0.11, and further preferably 0.105.

[0184] The zoom lens preferably satisfies the following conditional formula (13). Here, the distance on the optical axis from the paraxial exit pupil position to the image plane Sim when the lens is focused on an infinitely distant object at the wide-angle end is set to Dexw. In the case where an optical component without optical power is arranged between the paraxial exit pupil position and the image plane Sim, Dexw is calculated using the air-converted distance for the optical component. As an example, Figure 4 The above distance Dexw is schematically shown in FIG. Figure 4 In FIG, a dotted line indicates a parallel flat optical component that does not have a power to be calculated using the air-converted distance. By preventing the corresponding value of conditional expression (13) from falling below the lower limit, the total length of the lens system can be shortened, thereby facilitating miniaturization. By preventing the corresponding value of conditional expression (13) from falling above the upper limit, the angle of incidence of the off-axis principal ray on the image plane Sim can be reduced, thereby facilitating securing peripheral light intensity.

[0185] 0.025 <IHw / DeXW<0.15(13)

[0186] In order to obtain better characteristics, the lower limit of conditional expression (13) is more preferably set to 0.04, further preferably 0.05, and further preferably 0.075. In order to obtain better characteristics, the upper limit of conditional expression (13) is more preferably set to 0.14, further preferably 0.13, and further preferably 0.11.

[0187] The zoom lens preferably satisfies the following conditional expression (14). By preventing the corresponding value of conditional expression (14) from falling below the lower limit, the refractive power of the first lens group G1 can be increased, thereby facilitating a reduction in the total length of the lens system. By preventing the corresponding value of conditional expression (14) from falling above the upper limit, the refractive power of the first lens group G1 does not become excessively strong, thereby facilitating a widening of the angle of view while suppressing aberrations.

[0188] 0.08 <fw / f1<0.5(14)

[0189] In order to obtain better characteristics, the lower limit of conditional expression (14) is more preferably set to 0.12, further preferably 0.17, and further preferably 0.22. In order to obtain better characteristics, the upper limit of conditional expression (14) is more preferably set to 0.4, further preferably 0.35, and further preferably 0.32.

[0190] The zoom lens preferably satisfies the following conditional expression (15). By preventing the corresponding value of conditional expression (15) from falling below the lower limit, the optical power of the negative lens group UN does not become excessively strong, thereby advantageously suppressing aberration fluctuations during zooming. By preventing the corresponding value of conditional expression (15) from falling above the upper limit, the optical power of the negative lens group UN does not become excessively weak, thereby advantageously contributing to miniaturization.

[0191] -2.4<fw / fUN<-0.6(15)

[0192] In order to obtain better characteristics, the lower limit of conditional expression (15) is more preferably set to -2, further preferably -1.7, and further preferably -1.4. In order to obtain better characteristics, the upper limit of conditional expression (15) is more preferably set to -0.8, further preferably -1, and further preferably -1.3.

[0193] The zoom lens preferably satisfies the following conditional expression (16). Here, the paraxial curvature radius of the image-side surface of the lens closest to the object side of the zoom lens is set to R2. The paraxial curvature radius of the object-side surface of the second lens from the object side of the zoom lens is set to R3. By preventing the corresponding value of the conditional expression (16) from becoming below the lower limit value, the optical focal length of the air lens formed between the lens closest to the object side of the zoom lens and the second lens from the object side of the zoom lens can be shifted to a negative optical focal length, which is conducive to suppressing distortion aberration. By preventing the corresponding value of the conditional expression (16) from becoming above the upper limit value, the absolute value of the curvature radius of the image-side surface of the lens closest to the object side of the zoom lens does not become too small, which is conducive to suppressing ghosting.

[0194] -0.25<(R2-R3) / (R2+R3)<0.16(16)

[0195] In order to obtain better characteristics, the lower limit of conditional expression (16) is more preferably set to -0.18, further preferably -0.15, and further preferably -0.13. In order to obtain better characteristics, the upper limit of conditional expression (16) is more preferably set to 0.12, further preferably 0.08, and further preferably 0.04.

[0196] The zoom lens preferably satisfies the following conditional expression (17). Here, the combined lateral magnification of all lenses closer to the image side than the maximum air gap DAmax described above, when focusing on an object at infinity at the wide-angle end, is set to βAmaxR. Preventing the corresponding value of conditional expression (17) from falling below the lower limit value facilitates reducing the diameter of the lens group consisting of all lenses closer to the image side than the maximum air gap DAmax. Preventing the corresponding value of conditional expression (17) from falling above the upper limit value facilitates suppressing aberration fluctuations when the maximum air gap DAmax changes due to errors.

[0197] -0.05<β AmaxR<0.45(17)

[0198] In order to obtain better characteristics, the lower limit of conditional expression (17) is more preferably set to 0, further preferably to 0.05, and further preferably to 0.09. In order to obtain better characteristics, the upper limit of conditional expression (17) is more preferably set to 0.38, further preferably to 0.33, and further preferably to 0.26.

[0199] The zoom lens preferably satisfies the following conditional expression (18). Here, the center thickness of the negative lens closest to the object side among the negative lenses included in the negative group UN is set to tN1. The effective radius of the object side surface of the negative lens closest to the object side among the negative lenses included in the negative group UN is set to ErN1. As an example, Figure 2 The center thickness tN1 is shown in FIG. Preventing the corresponding value of conditional expression (18) from falling below the lower limit value contributes to improving the robustness of the negative lens closest to the object side among the negative lens elements included in negative group UN. Preventing the corresponding value of conditional expression (18) from falling above the upper limit value contributes to lightweighting.

[0200] 0.015 <tN1 / ErN1<0.085(18)

[0201] In order to obtain better characteristics, the lower limit of conditional expression (18) is more preferably set to 0.025, further preferably to 0.03, and further preferably to 0.034. In order to obtain better characteristics, the upper limit of conditional expression (18) is more preferably set to 0.075, further preferably to 0.068, and further preferably to 0.05.

[0202] The zoom lens preferably satisfies the following conditional formula (19). Here, the displacement amount of the P lens group GP in the optical axis direction when changing the magnification from the wide-angle end to the telephoto end is set as MovP. In addition, the sign of the above-mentioned displacement amount MovP is set to negative when the P lens group GP moves toward the object side, and is set to positive when the P lens group GP moves toward the image side. As an example, Figure 2The above-mentioned displacement MovP is shown in . The displacement MovP is the difference between the position of the P lens group GP in the optical axis direction at the wide-angle end and the position of the P lens group GP in the optical axis direction at the telephoto end based on the position of the image plane Sim. By preventing the corresponding value of the conditional expression (19) from becoming below the lower limit value, the movement of the P lens group GP toward the object side can be suppressed, so that the space for the groups other than the P lens group GP that move when the magnification is changed can be ensured. This is beneficial for shortening the total length of the lens system while achieving a high magnification ratio. By preventing the corresponding value of the conditional expression (19) from becoming above the upper limit value, the P lens group GP can be located closer to the object side at the telephoto end, which is beneficial for suppressing the change of the focus position when the magnification is changed.

[0203] -0.45 <MovP / (f1 / log(ft / fw))<0.1(19)

[0204] In order to obtain better characteristics, the lower limit of conditional expression (19) is more preferably set to -0.38, further preferably -0.3, and further preferably -0.23. In order to obtain better characteristics, the upper limit of conditional expression (19) is more preferably set to 0.05, further preferably 0.001, and further preferably -0.03.

[0205] The zoom lens preferably satisfies the following conditional expression (20). Here, the thickness on the optical axis of the group consisting of all lenses closer to the object side than the interval closest to the object side in the interval that changes when focusing is set to D1a. The sum of the distance on the optical axis from the lens surface closest to the object side of the first lens group G1 to the lens surface closest to the image side of the final lens group GE in the state of focusing on an infinite object at the wide-angle end and the back focal length in air conversion distance is set to TLw. As an example, in Figure 2 The thickness D1a is shown in FIG. Preventing the corresponding value of conditional expression (20) from falling below the lower limit value is advantageous in suppressing aberration fluctuations when focusing the on-axis light beam at the telephoto end. Preventing the corresponding value of conditional expression (20) from falling above the upper limit value is advantageous in reducing weight.

[0206] 0.019<D1a / TLw<0.18(20)

[0207] In order to obtain better characteristics, the lower limit of conditional expression (20) is more preferably set to 0.025, further preferably 0.04, and further preferably 0.07. In order to obtain better characteristics, the upper limit of conditional expression (20) is more preferably set to 0.16, further preferably 0.14, and further preferably 0.125.

[0208] The zoom lens preferably satisfies the following conditional expression (21). Here, the thickness on the optical axis of the group consisting of all lenses between the interval closest to the object side and the second interval from the object side among the intervals that change when focusing is set to D1b. The thickness on the optical axis of the first lens group G1 is set to DG1. As an example, Figure 2 The thickness D1b and thickness DG1 are shown in FIG. By preventing the corresponding value of conditional expression (21) from becoming below the lower limit, it is advantageous to suppress the fluctuation of spherical aberration during focusing. By preventing the corresponding value of conditional expression (21) from becoming above the upper limit, it is advantageous to reduce weight.

[0209] 0.13 <D1b / DG1<0.45(21)

[0210] In order to obtain better characteristics, the lower limit of conditional expression (21) is more preferably set to 0.18, further preferably 0.22, and further preferably 0.26. In order to obtain better characteristics, the upper limit of conditional expression (21) is more preferably set to 0.4, further preferably 0.35, and further preferably 0.3.

[0211] The zoom lens preferably satisfies the following conditional expression (22). Here, the specific gravity of the positive lens with the largest Abbe number based on the d-line among the positive lenses included in the first lens group G1 is set to gv max. By preventing the corresponding value of conditional expression (22) from falling below the lower limit, the selectivity of materials with anomalous dispersion increases, thereby facilitating correction of axial chromatic aberration. By preventing the corresponding value of conditional expression (22) from falling above the upper limit, lightweighting is facilitated.

[0212] 3.1<gv max<4.2(22)

[0213] In order to obtain better characteristics, the lower limit of conditional expression (22) is more preferably set to 3.2, further preferably to 3.3, and further preferably to 3.4. In order to obtain better characteristics, the upper limit of conditional expression (22) is more preferably set to 4, further preferably to 3.8, and further preferably to 3.6.

[0214] The zoom lens preferably satisfies the following conditional expression (23). Here, the center thickness of the lens closest to the object side of the first lens group G1 is set to tL1. The effective radius of the object side surface of the lens closest to the object side of the first lens group G1 is set to ErL1. As an example, Figure 2 The center thickness tL1 is shown in FIG. Preventing the corresponding value of conditional expression (23) from falling below the lower limit value contributes to improving the robustness of the lens closest to the object side of the first lens group G1. Preventing the corresponding value of conditional expression (23) from falling above the upper limit value contributes to lightweighting.

[0215] 0.025 <tL1 / ErL1<0.075(23)

[0216] In order to obtain better characteristics, the lower limit of conditional expression (23) is more preferably set to 0.03, further preferably to 0.034, and further preferably to 0.038. In order to obtain better characteristics, the upper limit of conditional expression (23) is more preferably set to 0.065, further preferably to 0.055, and further preferably to 0.046.

[0217] The zoom lens of the present invention can be configured to include an EX group EX that can be inserted or removed from the optical path to change the focal length of the zoom lens. For example, the EX group EX can be arranged in an insertable and removable manner. The EX group EX can be inserted into the optical path at the maximum air gap DAmax described above to change the focal length of the zoom lens while maintaining a constant image position. In this case, a zoom lens capable of changing the focal length can be obtained.

[0218] As an example, in Figure 4 The EX group EX is shown in FIG. Figure 4 The EX group EX consists of 7 lenses. Figure 1 The zoom lens is inserted with Figure 4 The structure of the zoom lens and the cross-sectional view of the light beam when the EX group EX is shown as Example 1-1. Figure 5 middle. Figure 5 The final lens group GEE becomes Figure 1 The final lens group GE is inserted into the EX group EX structure, which Figure 5 Examples with Figure 1 The examples are different. Figure 5 The other lens groups and group structures in the example are the same as Figure 1 Same as the example. Figure 5 In FIG, the state of focusing on an object at infinity is shown, with the left side being the object side and the right side being the image side. Figure 5 In FIG, the upper section labeled “Wide” shows the wide-angle end state, and the lower section labeled “Tel e” shows the telephoto end state. Figure 5 In FIG, as light beams, an axial light beam at the wide-angle end and a light beam with a maximum half angle of view ωEw, and an axial light beam at the telephoto end and a light beam with a maximum half angle of view ωEt are shown. Figure 5 In FIG. 1 , the symbols of the 1a-th subgroup G1a, the 1b-th subgroup G1b, and the 1c-th subgroup G1c and the arrows indicating the movement directions when focusing are performed are omitted.

[0219] When the zoom lens includes the above-mentioned EX group EX, it can be configured so that the maximum image height can be changed by inserting or removing the EX group EX. For example, in the wide-angle end state, Figure 1Compared to the maximum image height IHw in the example shown, Figure 5 In the example shown, the maximum image height IHEw is enlarged. With this configuration, a zoom lens having a wider image circle can be obtained while maintaining the angle of view.

[0220] The zoom lens preferably satisfies the following conditional expression (24). Here, the focal length of the zoom lens in the state where the EX group EX is not inserted and the zoom lens is focused on an infinitely distant object at the telephoto end is set to ft. The maximum half angle of view in the state where the EX group EX is not inserted and the zoom lens is focused on an infinitely distant object at the telephoto end is set to ωt. The focal length of the zoom lens in the state where the EX group EX is inserted and the zoom lens is focused on an infinitely distant object at the telephoto end is set to fEt. The maximum half angle of view in the state where the EX group EX is inserted and the zoom lens is focused on an infinitely distant object at the telephoto end is set to ωEt. tan is a tangent. By preventing the corresponding value of the conditional expression (24) from becoming below the lower limit value, it is advantageous to simultaneously suppress various aberrations in the state where the EX group EX is not inserted and various aberrations in the state where the EX group EX is inserted. By preventing the corresponding value of the conditional expression (24) from becoming above the upper limit value, it is easy to obtain the image size obtained in the state where the EX group EX is inserted.

[0221] 0.5<(ft×tanωt) / (fEt×tanωEt)<0.9(24)

[0222] In order to obtain better characteristics, the lower limit of conditional expression (24) is more preferably set to 0.55, further preferably 0.6, and further preferably 0.65. In order to obtain better characteristics, the upper limit of conditional expression (24) is more preferably set to 0.85, further preferably 0.8, and further preferably 0.75.

[0223] The zoom lens preferably satisfies the following conditional expression (25). Here, the thickness of the EX group EX on the optical axis is set to DEX. As an example, Figure 5 The thickness DEX is shown in FIG. By preventing the corresponding value of conditional expression (25) from becoming below the lower limit, it is advantageous to suppress aberrations generated in the EX group EX. By preventing the corresponding value of conditional expression (25) from becoming above the upper limit, it is advantageous to reduce the weight of the EX group EX.

[0224] 0.05 <DEX / TLw<0.12 (25)

[0225] In order to obtain better characteristics, the lower limit of conditional expression (25) is more preferably set to 0.06, further preferably 0.07, and further preferably 0.085. In order to obtain better characteristics, the upper limit of conditional expression (25) is more preferably set to 0.11, further preferably 0.1, and further preferably 0.094.

[0226] The zoom lens preferably satisfies the following conditional expression (26). Here, the focal length of the lens component closest to the image side of the EX group EX is set to fLExe. In addition, one lens component means one single lens or one cemented lens. By preventing the corresponding value of the conditional expression (26) from becoming below the lower limit value, it is possible to suppress excessive correction of distortion aberration generated in the EX group EX. By preventing the corresponding value of the conditional expression (26) from becoming above the upper limit value, it is possible to correct distortion aberration generated in the EX group EX.

[0227] -2.3 <Bfw / fLExe<-0.55 (26)

[0228] In order to obtain better characteristics, the lower limit of conditional expression (26) is more preferably set to -2.2, further preferably to -2.1, and further preferably to -1.98. In order to obtain better characteristics, the upper limit of conditional expression (26) is more preferably set to -0.84, further preferably to -1.1, and further preferably to -1.75.

[0229] The zoom lens preferably satisfies the following conditional expression (27). Here, the refractive index of the lens closest to the object in the EX group EX with respect to the d-line is set to NEX1. Preventing the corresponding value of conditional expression (27) from falling below the lower limit value helps suppress spherical aberration generated in the EX group EX. Preventing the corresponding value of conditional expression (27) from falling above the upper limit value helps suppress axial chromatic aberration generated in the EX group EX.

[0230] 1.4<NEX1<1.85(27)

[0231] In order to obtain better characteristics, the lower limit of conditional expression (27) is more preferably set to 1.45, further preferably 1.5, and further preferably 1.56. In order to obtain better characteristics, the upper limit of conditional expression (27) is more preferably set to 1.75, further preferably 1.7, and further preferably 1.65.

[0232] in addition, Figure 1 The example shown is just one example, and various modifications can be made without departing from the technical spirit of the present invention. For example, the number of lenses included in the first lens group G1, the negative lens group UN, the N lens group GN, the P lens group GP, the final lens group GE, and each focusing group can also be set to the same number as the first lens group G1, the negative lens group UN, the N lens group GN, the P lens group GP, the final lens group GE, and each focusing group. Figure 1 The number of lens groups included in the negative group UN can also be set to be different from the example. Figure 1 The focus group, the position of the aperture stop St and the lens group that moves when the magnification is changed can also be configured as Figure 1 The examples are different.

[0233] The above-mentioned preferred structures and achievable structures can be arbitrarily combined within a non-conflicting range, and are preferably appropriately and selectively adopted according to the required specifications.

[0234] As an example, a preferred embodiment of the present invention is a zoom lens comprising: a first lens group G1, which is arranged at a position closest to the object side and has positive optical focal length; a negative group UN, which is arranged adjacent to the image side of the first lens group G1 and consists of two or less lens groups and has negative optical focal length as a whole; an N lens group GN, which is arranged at a position closer to the image side than the negative group UN and has negative optical focal length; a P lens group GP, which is arranged at a position closer to the image side than the negative group UN and has positive optical focal length; and a final lens group GE, which is arranged at a position closest to the image side, wherein when the magnification is changed, all intervals between adjacent lens groups change and satisfy the above-mentioned conditional equation (1).

[0235] Next, embodiments of the zoom lens of the present invention will be described with reference to the accompanying drawings. In the cross-sectional views of each embodiment, reference symbols are used independently for each embodiment to avoid increasing the number of digits in the reference symbols and complicating the description and drawings. Therefore, even if the drawings of different embodiments share the same reference symbols, they do not necessarily represent common structures.

[0236] [Example 1]

[0237] The structure and movement trajectory of the zoom lens of Example 1 are shown in FIG. Figure 1 The diagrammatic representation and structure have been described above, so some repetitive descriptions are omitted here. The zoom lens of Example 1 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having overall negative refractive power, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0238] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0239] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0240] Regarding the zoom lens of Example 1, basic lens data are shown in Table 1, specifications and variable surface intervals are shown in Table 2, and aspheric surface coefficients are shown in Table 3.

[0241] The table of basic lens data is as follows. The "Sn" column shows the surface numbers when the surface closest to the object side is set as the first surface and the numbers increase one by one toward the image side. The "R" column shows the radius of curvature of each surface. The "D" column shows the surface spacing on the optical axis between each surface and the surface adjacent to its image side. The "Nd" column shows the refractive index of each component relative to the d-line. The "vd" column shows the Abbe number of each component based on the d-line. The "θg, F" column shows the partial dispersion ratio between the g-line and the F-line of each component. The "SG" column shows the specific gravity of each component. The "ED" column shows the effective diameter of each surface.

[0242] In addition, when the refractive indices of a certain lens with respect to the g-line, F-line, and C-line are respectively Ng, NF, and NC, and the partial dispersion ratio between the g-line and F-line of the lens is θg,F, θg,F is defined by the following formula.

[0243] θg,F=(Ng-NF) / (NF-NC)

[0244] The "d-line", "C-line", "F-line" and "g-line" described in this specification are bright lines, the wavelength of the d-line is used as 587.56nm (nanometers), the wavelength of the C-line is used as 656.27nm (nanometers), the wavelength of the F-line is used as 486.13nm (nanometers), and the wavelength of the g-line is used as 435.84nm (nanometers).

[0245] In the table of basic lens data, the sign of the radius of curvature of the surface that makes the convex shape face the object side is set to positive, and the sign of the radius of curvature of the surface that makes the convex shape face the image side is set to negative. Table 1 also shows the aperture stop St and the optical component PP. The surface number column corresponding to the aperture stop St is recorded with the surface number and the term (St). The value at the bottom of column D in the table is the distance between the surface closest to the image side in the table and the image plane Sim. For variable surface spacing, the symbol DD[] is used, and the object-side surface number of the spacing is indicated in [] and recorded in column D.

[0246] In Table 2, the zoom ratio Zr, focal length f, open F-number FNo., maximum total angle of view 2ω, variable surface separation, and maximum image height IHw when focused on an object at infinity at the wide-angle end are shown, using line d as a reference. The zoom ratio has the same meaning as the zoom factor. The [°] in the 2ω column indicates the unit is degrees. Table 2 shows the values ​​for each object distance and each zoom state. More specifically, the "Infinity" column shows the values ​​for the state focused on an object at infinity, the "Nearest (0.88m)" column shows the values ​​for the state focused on the closest object, and the "Wide," "Middle," and "Tele" columns show the values ​​for the wide-angle end, intermediate focal length, and telephoto end, respectively. The value in parentheses after "Nearest" is the distance on the optical axis from the closest object to the lens surface closest to the object. The "m" in "(0.88m)" represents the distance in meters.

[0247] In the basic lens data, the surface number of the aspheric surface is marked with an * mark, and the value of the paraxial curvature radius is recorded in the curvature radius column of the aspheric surface. In Table 3, the surface number of the aspheric surface is shown in the Sn row, and the numerical value of the aspheric coefficient of each aspheric surface is shown in the KA and Am rows. In addition, m in Am is an integer greater than 3 and varies depending on the surface. For example, in the 6th surface of Example 1, m = 4, 6, 8, 10, 12, 14, 16, 18, 20. The numerical value of the aspheric coefficient of Table 3 "E±n" (n: integer) means "×10 ±n KA and Am are aspherical coefficients in the aspherical formula represented by the following formula.

[0248] Zd=C×h 2 / {1+(1-KA×C 2 ×h 2 ) 1 / 2}+∑Am×h m

[0249] in,

[0250] Zd: Aspheric depth (the length of the perpendicular line from a point on the aspheric surface at height h to a plane tangent to the aspheric vertex and perpendicular to the optical axis Z)

[0251] h: Height (distance from the optical axis Z to the lens surface)

[0252] C: reciprocal of the paraxial curvature radius

[0253] KA, Am: Aspheric coefficients

[0254] The aspheric Σ means the sum related to m.

[0255] The data in each table uses degrees as the unit of angle and millimeters as the unit of length. However, since optical systems can be used at both magnified and reduced scales, other appropriate units may be used. Furthermore, the values ​​in the following tables are rounded to a predetermined number of decimal places.

[0256] [Table 1] Example 1

[0257] Sn R D Nd vd θg,F SG ED 1 194.1757 1.9100 1.67300 38.26 0.57580 3.01 94.30 2 161.0116 2.2410 91.97 3 179.5451 12.5010 1.43700 95.10 0.53364 3.53 92.17 4 211.4333 0.1370 92.07 5 251.7347 7.7850 1.43700 95.10 0.53364 3.53 89.27 *6 441.3697 DD[6] 89.18 7 125.0018 9.1410 1.43700 95.10 0.53364 3.53 87.50 8 0.1200 87.16 9 277.4352 7.3770 1.43700 95.10 0.53364 3.53 85.79 10 326.8651 DD

[10] 85.33 *11 80.2199 7.7870 1.53775 74.70 0.53936 3.64 73.72 12 268.9447 DD

[12] 72.90 13 1161.7943 0.5530 1.91082 35.25 0.58335 4.85 30.82 14 21.7839 6.6680 26.47 15 57.2976 0.9860 1.84850 43.79 0.56197 5.08 26.22 16 31.0144 8.8030 1.85451 25.15 0.61031 3.48 26.34 17 27.7502 1.7930 26.47 18 23.7439 1.0670 1.84850 43.79 0.56197 5.08 26.18 *19 91.9928 DD

[19] 27.87 20 -53.9899 1.7750 1.86966 20.02 0.64349 3.37 34.00 21 44.0616 0.9100 1.69560 59.05 0.54348 4.56 34.46 22 -170.4444 DD

[22] 35.90 *23 108.2078 6.5630 1.59349 67.00 0.53667 3.14 38.55 24 -57.4866 0.1200 39.00 25 42.5609 2.9960 1.89286 20.36 0.63944 3.61 39.17 26 31.3565 6.6270 1.49782 82.57 0.53862 3.86 37.17 27 153.0677 DD

[27] 36.80 28(St) 5.6820 35.50 29 86.5487 7.1220 1.53775 74.70 0.53936 3.64 34.89 30 25.1114 1.1210 1.53996 59.64 0.54435 2.84 34.97 31 229.9585 35.8880 35.31 32 96.6349 5.2390 1.84666 23.84 0.62012 3.50 36.50 33 81.2401 1.9960 36.40 34 67.0433 6.5460 1.48749 70.24 0.53007 2.46 33.00 35 49.6402 1.0600 1.95375 32.32 0.59015 5.10 32.07 36 36.3583 0.4690 30.62 37 30.1314 8.4810 1.51860 69.89 0.53184 2.60 31.42 38 78.1901 1.0990 1.91082 35.25 0.58335 4.85 31.16 39 27.0365 7.4650 1.59551 39.24 0.58043 2.63 31.16 40 189.1203 3.7000 31.71 41 40.9120 5.1500 1.51742 52.43 0.55649 2.46 34.82 42 747.0448 50.3341 34.69 43 5.7000 1.51633 64.14 0.53531 2.52 30.39 44 1.1000 30.06

[0258] [Table 2] Example 1

[0259]

[0260] [Table 3]

[0261] Example 1

[0262]

[0263] exist Figure 6 , various aberration diagrams are shown when the zoom lens of Example 1 is focused on an object at infinity. Figure 6 In the figure, spherical aberration, astigmatism, distortion and lateral chromatic aberration are shown from the left. Figure 6 In the diagram, the upper section marked "Wide" shows aberrations at the wide-angle end, the middle section marked "Middle" shows aberrations at the intermediate focal length, and the lower section marked "Tele" shows aberrations at the telephoto end. In the spherical aberration diagram, aberrations on the d-line, C-line, and F-line are shown as solid lines, long dashed lines, and short dashed lines, respectively. In the astigmatism diagram, aberrations on the d-line in the sagittal direction are shown as solid lines, and aberrations on the d-line in the tangential direction are shown as short dashed lines. In the distortion diagram, aberrations on the d-line are shown as solid lines. In the lateral chromatic aberration diagram, aberrations on the C-line and F-line are shown as long dashed lines and short dashed lines, respectively. In the spherical aberration diagram, the open F value is shown after FNo.=. In the other aberration diagrams, the value of the maximum half angle of view is shown after ω=.

[0264] Unless otherwise specified, the symbols, meanings, description methods, and diagrammatic methods of the data related to the above-mentioned embodiment 1 are basically the same in the following embodiments, and therefore, repeated descriptions are omitted below.

[0265] [Example 1-1]

[0266] Example 1-1 is an example in which an EX group EX is inserted into the zoom lens of Example 1. The structure of the zoom lens of Example 1-1 and the cross-sectional view of the light beam are shown in FIG. Figure 5The zoom lens of Example 1-1 has a final lens group GEE in which the EX group EX is inserted inside the final lens group GE of Example 1, replacing the final lens group GE of Example 1. The other lens groups and group structures of Example 1-1 are the same as those of the zoom lens of Example 1.

[0267] Regarding the zoom lens of Example 1-1, basic lens data are shown in Tables 4A and 4B, specifications and variable surface spacing are shown in Table 5, aspheric coefficients are shown in Table 6, and various aberration diagrams are shown in Table 7. Figure 7 Here, in order to avoid making one table too long, the basic lens data is shown in two tables, and in the following tables, it is also shown in two tables as appropriate.

[0268] [Table 4A]

[0269] Example 1-1

[0270] Sn R D Nd vd θg,F SG ED 1 194.1757 1.9100 1.67300 38.26 0.57580 3.01 94.30 2 161.0116 2.2410 91.97 3 179.5451 12.5010 1.43700 95.10 0.53364 3.53 92.18 4 211.4333 0.1370 92.08 5 251.7347 7.7850 1.43700 95.10 0.53364 3.53 89.27 *6 441.3697 DD[6] 89.18 7 125.0018 9.1410 1.43700 95.10 0.53364 3.53 87.50 8 0.1200 87.16 9 277.4352 7.3770 1.43700 95.10 0.53364 3.53 85.79 10 326.8651 DD

[10] 85.33 *11 80.2199 7.7870 1.53775 74.70 0.53936 3.64 73.72 12 268.9447 DD

[12] 72.89 13 1161.7943 0.5530 1.91082 35.25 0.58335 4.85 30.82 14 21.7839 6.6680 26.47 15 57.2976 0.9860 1.84850 43.79 0.56197 5.08 26.23 16 31.0144 8.8030 1.85451 25.15 0.61031 3.48 26.34 17 27.7502 1.7930 26.47 18 23.7439 1.0670 1.84850 43.79 0.56197 5.08 26.13 *19 91.9928 DD

[19] 27.76 20 -53.9899 1.7750 1.86966 20.02 0.64349 3.37 34.00 21 -44.0616 0.9100 1.69560 59.05 0.54348 4.56 34.46 22 -170.4444 DD

[22] 35.90 *23 108.2078 6.5630 1.59349 67.00 0.53667 3.14 38.55 24 -57.4866 0.1200 38.95 25 42.5609 2.9960 1.89286 20.36 0.63944 3.61 38.70 26 31.3565 6.6270 1.49782 82.57 0.53862 3.86 36.64 27 153.0677 DD

[27] 36.19

[0271] [Table 4B]

[0272] Example 1-1

[0273] Sn R D Nd vd θg,F SG ED 28(St) 5.6820 35.10 29 86.5487 7.1220 1.53775 74.70 0.53936 3.64 34.03 30 25.1114 1.1210 1.53996 59.64 0.54435 2.84 33.96 31 229.9585 1.0710 33.77 32 31.6538 5.4390 1.63246 63.77 0.54215 4.29 33.00 33 200.4912 0.4430 32.33 34 40.2437 0.8890 2.00069 25.46 0.61364 4.73 30.49 35 21.1414 8.7040 1.53172 48.84 0.56309 2.50 28.10 36 76.8037 0.0420 27.19 37 76.7471 0.8740 1.78590 44.20 0.56317 4.40 27.15 38 16.6618 8.9070 1.72825 28.32 0.60755 3.01 24.80 39 71.6175 0.4020 24.22 40 75.8414 0.8020 1.75500 52.32 0.54757 4.17 23.85 41 40.5721 0.8100 1.75211 25.05 0.61924 3.14 22.99 42 31.4032 7.5050 22.67 43 96.6349 5.2390 1.84666 23.84 0.62012 3.50 25.51 44 81.2401 1.9960 25.90 45 67.0433 6.5460 1.48749 70.24 0.53007 2.46 25.65 46 49.6402 1.0600 1.95375 32.32 0.59015 5.10 25.03 47 36.3583 0.4690 25.03 48 30.1314 8.4810 1.51860 69.89 0.53184 2.60 26.00 49 -78.1901 1.0990 1.91082 35.25 0.58335 4.85 26.54 50 27.0365 7.4650 1.59551 39.24 0.58043 2.63 27.56 51 -189.1203 3.7000 29.05 52 40.9120 5.1500 1.51742 52.43 0.55649 2.46 34.57 53 747.0448 50.3255 34.69 54 5.7000 1.51633 64.14 0.53531 2.52 42.10 55 1.1000 42.65

[0274] [Table 5]

[0275] Example 1-1

[0276]

[0277] [Table 6]

[0278] Example 1-1

[0279]

[0280] [Example 2]

[0281] The structure and movement trajectory of the zoom lens of Example 2 are shown in FIG. Figure 8 The zoom lens of Example 2 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0282] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0283] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0284] Regarding the zoom lens of Example 2, basic lens data are shown in Table 7, specifications and variable surface spacing are shown in Table 8, aspheric coefficients are shown in Table 9, and various aberration diagrams are shown in Table 10. Figure 9 middle.

[0285] [Table 7] Example 2

[0286] Sn R D Nd vd θg,F SG ED 1 212.2050 2.8500 1.89119 38.88 0.57329 5.06 100.00 2 246.6254 3.8132 98.07 3 233.6185 13.6881 1.43387 95.18 0.53733 3.18 98.47 4 183.2698 0.1533 98.36 5 320.7024 8.7952 1.43700 95.10 0.53364 3.53 94.82 *6 270.0468 DD[6] 94.72 7 324.3218 4.4051 1.43387 95.18 0.53733 3.18 91.37 8 48258.2421 0.1205 90.96 9 168.4365 10.3179 1.43387 95.18 0.53733 3.18 88.02 10 318.4977 DD

[10] 87.69 *11 73.9600 8.9764 1.59282 68.62 0.54414 4.13 80.00 12 193.4578 DD

[12] 79.08 13 420.0354 1.1001 2.00069 25.46 0.61364 4.73 30.03 14 23.1839 6.9067 25.76 15 41.0181 1.0100 1.78035 50.62 0.55878 5.03 25.24 16 34.1886 7.6178 1.78469 23.84 0.61897 3.56 25.32 17 26.6476 2.1167 25.35 18 22.1201 1.1609 1.68649 59.63 0.55145 4.58 23.08 *19 69.0940 DD

[19] 23.14 20 -43.8446 1.7903 1.84824 22.59 0.62881 3.65 30.10 21 -35.6700 1.1154 1.60590 67.41 0.54405 4.18 30.52 22 -225.4935 DD

[22] 31.83 23(St) 1.0000 32.50 24 71.2284 4.8221 1.66858 61.35 0.55005 4.49 34.70 *25 -108.5076 0.1201 34.99 26 52.1321 1.5029 1.88142 31.35 0.59534 4.72 35.74 27 30.9878 7.2337 1.47602 87.15 0.53603 3.61 34.81 28 991.6822 0.1200 34.88 29 80.4886 4.6615 1.59349 67.00 0.53667 3.14 34.97 30 119.3197 1.2100 1.59270 35.31 0.59336 2.64 34.77 31 75.9760 DD

[31] 34.16 32 81.3582 4.7653 1.84666 23.83 0.61603 5.51 35.67 33 134.7606 4.6672 35.55 34 32.8991 5.8531 1.48749 70.24 0.53007 2.46 31.81 35 1148.5073 1.8387 1.91082 35.25 0.58224 4.97 30.69 36 19.8353 10.6825 1.49246 80.63 0.53602 3.37 27.33 37 68.9180 1.3725 26.90 38 45.3094 1.8593 1.88300 40.76 0.56679 5.52 26.64 39 30.5195 3.2856 1.60788 62.95 0.54322 3.62 27.35 40 71.3233 0.2585 27.77 41 38.6356 11.8666 1.49928 80.09 0.53681 3.45 29.17 42 52.2377 40.6647 30.43 43 1.0000 1.51633 64.14 0.53531 2.52 29.58 44 1.1000 29.56

[0287] [Table 8] Example 2

[0288]

[0289] [Table 9]

[0290] Example 2

[0291]

[0292] [Example 3]

[0293] The structure and movement trajectory of the zoom lens of Example 3 are shown in FIG. Figure 10 The zoom lens of Example 3 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN comprises, in order from the object side toward the image side, a second lens group G2 having positive refractive power and a third lens group G3 having negative refractive power.

[0294] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the second lens group G2, the third lens group G3, the N lens group GN and the P lens group GP change the distance between them and the adjacent lens groups and move along the optical axis Z.

[0295] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0296] Regarding the zoom lens of Example 3, basic lens data are shown in Table 10, specifications and variable surface spacing are shown in Table 11, aspheric coefficients are shown in Table 12, and various aberration diagrams are shown in Table 13. Figure 11 middle.

[0297] [Table 10] Example 3

[0298] Sn R D Nd vd θg,F SG ED 1 150.5085 2.7998 1.80440 39.61 0.57202 4.20 102.02 2 140.1179 11.3382 97.58 3 216.4804 13.2589 1.43387 95.18 0.53733 3.18 99.30 4 212.6906 0.2209 99.30 5 521.9937 10.9824 1.43700 95.10 0.53364 3.53 99.52 *6 174.4431 DD[6] 99.50 7 173.6663 8.0922 1.43387 95.18 0.53733 3.18 94.18 8 3815.1665 0.1201 93.71 9 173.8662 12.9261 1.43387 95.18 0.53733 3.18 90.28 10 189.6761 DD

[10] 89.95 *11 91.7566 6.1290 1.59349 67.00 0.53667 3.14 80.00 12 208.3742 DD

[12] 79.29 13 168.7386 3.0526 1.49700 81.54 0.53748 3.62 43.83 14 714.1840 DD

[14] 42.86 *15 63.4214 1.1000 2.00069 25.46 0.61364 4.73 32.17 16 18.1643 8.5182 26.06 17 29.8678 1.0000 1.79368 49.34 0.55982 5.09 26.04 18 44.5191 8.4519 1.78568 23.79 0.61902 3.56 26.46 19 24.9742 2.5130 26.65 20 18.8939 1.1002 1.59335 68.57 0.54418 4.13 24.57 *21 -47.6670 DD

[21] 25.23 22 -41.7333 1.9089 1.84900 22.55 0.62898 3.65 30.07 23 -33.4756 1.1101 1.66415 61.98 0.54368 4.43 30.48 24 -136.7030 DD

[24] 31.75 25(St) 1.0000 32.50 26 87.5267 3.9576 1.80864 47.90 0.56098 5.16 34.28 *27 135.5465 0.1201 34.49 28 50.1527 1.5259 1.88025 39.97 0.57058 4.98 35.21 29 33.1594 7.8709 1.43875 94.66 0.53402 3.59 34.41 30 127.7673 0.1200 34.47 31 92.9691 4.7707 1.69403 58.15 0.54206 3.98 34.26 32 84.6646 1.2000 1.70203 30.54 0.60243 2.99 33.97 33 61.5857 DD

[33] 32.97 34 94.4896 4.1511 1.84666 23.83 0.61603 5.51 34.62 35 125.1752 5.3609 34.59 36 31.8026 6.3683 1.48749 70.24 0.53007 2.46 31.46 37 4443.5403 1.1035 1.91082 35.25 0.58224 4.97 30.22 38 19.3944 8.8654 1.49934 80.10 0.53683 3.45 27.35 39 69.8003 1.0610 27.28 40 50.0954 1.0010 1.88300 40.76 0.56679 5.52 27.13 41 30.2943 2.8383 1.59041 66.09 0.54215 3.62 27.93 42 61.4751 0.1202 28.31 43 35.9072 8.4523 1.48751 81.92 0.53598 3.39 30.03 44 44.9624 43.6922 30.60 45 1.0000 1.51633 64.14 0.53531 2.52 30.55 46 1.1000 30.55

[0299] [Table 11]

[0300] Example 3

[0301]

[0302] [Table 12]

[0303] Example 3

[0304]

[0305] [Example 4]

[0306] The structure and movement trajectory of the zoom lens of Example 4 are shown in FIG. Figure 12 The zoom lens of Example 4 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN comprises, in order from the object side toward the image side, two lens groups: a second lens group G2 having positive refractive power and a third lens group G3 having negative refractive power.

[0307] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the second lens group G2, the third lens group G3, the N lens group GN and the P lens group GP change the distance between them and the adjacent lens groups and move along the optical axis Z.

[0308] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0309] Regarding the zoom lens of Example 4, basic lens data are shown in Table 13, specifications and variable surface spacing are shown in Table 14, aspheric coefficients are shown in Table 15, and various aberration diagrams are shown in Table 16. Figure 13 middle.

[0310] [Table 13] Example 4

[0311] Sn R D Nd vd θg,F SG ED 1 139.6041 2.0801 1.80440 39.61 0.57202 4.20 99.20 2 180.2125 10.2310 96.25 3 245.6058 12.5246 1.43387 95.18 0.53733 3.18 97.63 4 194.6909 0.1202 97.66 5 705.4507 9.5327 1.43700 95.10 0.53364 3.53 96.10 *6 173.8276 DD[6] 96.04 7 197.2665 6.8766 1.43387 95.18 0.53733 3.18 91.51 8 4107.4361 0.1201 91.06 9 186.5524 11.4893 1.43387 95.18 0.53733 3.18 88.00 10 205.2818 DD

[10] 87.74 *11 87.6673 6.8845 1.59349 67.00 0.53667 3.14 80.00 12 219.3533 DD

[12] 79.29 13 208.8117 2.8052 1.49700 81.54 0.53748 3.62 44.08 14 488.9367 DD

[14] 43.38 *15 65.0366 1.1001 2.00069 25.46 0.61364 4.73 32.51 16 18.6502 8.2349 26.49 17 31.8668 1.0101 1.78150 50.51 0.55887 5.03 26.64 18 44.2340 7.8523 1.78951 23.61 0.62035 3.58 26.88 19 25.8860 2.3612 26.95 20 19.5678 1.1001 1.63702 64.38 0.54759 4.34 24.76 *21 -50.5663 DD

[21] 25.25 22 -40.4176 1.8138 1.84892 22.55 0.62896 3.65 30.07 23 -33.3219 1.1102 1.61947 66.14 0.54397 4.24 30.49 24 -149.3467 DD

[24] 31.77 25(St) 1.0000 32.50 26 89.6281 3.9445 1.83876 45.01 0.56333 5.31 34.26 *27 132.7316 0.1201 34.47 28 53.5976 1.1002 1.78796 34.44 0.58868 4.02 34.95 29 32.7278 7.5216 1.44750 92.90 0.53449 3.59 34.24 30 157.2485 0.1200 34.22 31 83.5681 4.2474 1.68201 58.74 0.54216 3.95 34.00 32 126.2904 1.2000 1.69002 29.32 0.60611 3.01 33.72 33 58.2414 DD

[33] 32.77 34 88.9491 4.1511 1.84666 23.83 0.61603 5.51 34.48 35 125.1752 5.3609 34.43 36 31.8026 6.3683 1.48749 70.24 0.53007 2.46 31.09 37 4443.5403 1.1035 1.91082 35.25 0.58224 4.97 29.77 38 19.3944 8.8654 1.49135 81.33 0.53632 3.42 26.93 39 69.8003 1.0610 26.81 40 50.0954 1.0010 1.88300 40.76 0.56679 5.52 26.66 41 30.2943 2.8383 1.54688 72.79 0.53955 3.57 27.34 42 61.4751 0.1202 27.78 43 35.9072 8.4523 1.48750 81.92 0.53598 3.39 29.37 44 44.9624 43.0301 30.01 45 1.0000 1.51633 64.14 0.53531 2.52 30.37 46 1.1000 30.38

[0312] [Table 14] Example 4

[0313]

[0314] [Table 15]

[0315] Example 4

[0316]

[0317] [Example 5]

[0318] The structure and movement trajectory of the zoom lens of Example 5 are shown in FIG. Figure 14 The zoom lens of Example 5 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0319] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0320] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0321] Regarding the zoom lens of Example 5, basic lens data are shown in Table 16, specifications and variable surface spacing are shown in Table 17, aspheric coefficients are shown in Table 18, and various aberration diagrams are shown in Table 19. Figure 15 middle.

[0322] [Table 16] Example 5

[0323] Sn R D Nd vd θg,F SG ED 1 218.2979 1.8001 1.67300 38.26 0.57580 3.01 86.65 2 141.8167 0.5601 84.24 3 131.4841 12.5000 1.43387 95.18 0.53733 3.18 84.34 4 223.5308 0.1200 84.18 5 215.8205 6.4687 1.43700 95.10 0.53364 3.53 81.60 *6 502.5963 DD[6] 81.50 7 130.9975 7.4955 1.43387 95.18 0.53733 3.18 79.47 8 24818.5810 0.1200 79.06 9 436.6592 4.8755 1.43387 95.18 0.53733 3.18 78.20 10 393.3624 DD

[10] 77.81 *11 78.0847 7.3525 1.59349 67.00 0.53667 3.14 69.05 12 302.9443 DD

[12] 68.01 13 2713.9983 0.9000 1.94413 31.47 0.59324 5.23 29.34 14 23.0488 5.8137 25.95 15 55.2611 0.9098 1.84850 43.79 0.56197 5.08 25.91 16 28.3355 8.9811 1.85451 25.15 0.61031 3.48 26.77 17 27.9242 1.7692 27.07 18 23.4996 1.1002 1.82055 46.76 0.56191 5.22 25.99 *19 89.4268 DD

[19] 26.93 20 63.1487 1.9773 1.89999 20.00 0.64193 3.55 34.74 21 -47.4828 1.1102 1.81524 47.27 0.56150 5.20 35.11 22 -158.1125 DD

[22] 36.25 *23 107.6130 6.3225 1.59349 67.00 0.53667 3.14 37.70 24 -55.5327 0.1198 37.99 25 41.3989 1.1000 1.90000 20.00 0.64194 3.55 37.17 26 30.6833 5.8172 1.52563 77.14 0.53871 3.63 35.93 27 100.5512 DD

[27] 35.47 28(St) 4.0714 34.15 29 56.8207 8.3524 1.53079 76.10 0.53898 3.64 33.96 30 21.1516 1.1102 1.53467 62.39 0.53937 2.80 34.25 31 86.0987 33.0647 35.34 32 98.3988 4.5561 1.84666 23.83 0.61603 5.51 36.50 33 112.2883 5.0637 36.43 34 29.3486 5.8432 1.48749 70.24 0.53007 2.46 32.11 35 223.9626 1.2132 1.93231 34.77 0.58374 5.30 31.05 36 21.5953 0.1731 27.94 37 20.1896 9.9354 1.51860 69.89 0.53184 2.60 28.44 38 49.4725 1.0055 1.89548 37.97 0.57568 5.11 27.71 39 19.1795 5.9629 1.52049 76.85 0.53809 3.51 26.43 40 75.9736 6.6455 26.97 41 34.1796 6.5378 1.54569 46.43 0.56739 2.47 33.63 42 300.2075 39.7514 33.59 43 1.0000 1.51633 64.14 0.53531 2.52 29.66 44 1.1000 29.59

[0324] [Table 17]

[0325] Example 5

[0326]

[0327] [Table 18]

[0328] Example 5

[0329]

[0330] [Example 6]

[0331] The structure and movement trajectory of the zoom lens of Example 6 are shown in FIG. Figure 16 The zoom lens of Example 6 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0332] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0333] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0334] Regarding the zoom lens of Example 6, basic lens data are shown in Table 19, specifications and variable surface spacing are shown in Table 20, aspheric coefficients are shown in Table 21, and various aberration diagrams are shown in Table 23. Figure 17 middle.

[0335] [Table 19] Example 6

[0336] Sn R D Nd vd θg,F SG ED 1 218.7981 1.8001 1.67300 38.26 0.57580 3.01 88.46 2 134.9775 2.7248 85.04 3 133.0591 12.5162 1.43387 95.18 0.53733 3.18 85.13 4 228.7675 0.1203 84.85 5 249.5704 6.4243 1.43700 95.10 0.53364 3.53 82.87 *6 432.6464 DD[6] 82.82 7 126.3212 8.5032 1.43387 95.18 0.53733 3.18 81.51 8 2092.1575 0.1201 81.14 9 508.7453 5.0222 1.43387 95.18 0.53733 3.18 80.26 10 358.8060 DD

[10] 79.86 *11 79.9433 7.4121 1.59349 67.00 0.53667 3.14 70.62 12 299.8943 DD

[12] 69.58 13 1620.7566 0.9000 1.97560 30.43 0.59585 5.33 29.43 14 22.8455 5.9324 26.04 15 54.1009 0.9102 1.84850 43.79 0.56197 5.08 26.01 16 28.5202 9.2182 1.85451 25.15 0.61031 3.48 27.08 17 27.4046 1.8600 27.45 18 23.1652 1.1000 1.81048 47.73 0.56113 5.17 26.32 *19 80.1866 DD

[19] 27.35 20 58.1865 1.9022 1.90000 20.12 0.64124 3.57 34.58 21 -45.4676 1.1112 1.76582 52.01 0.55764 4.96 34.97 22 -162.3253 DD

[22] 36.18 *23 103.3884 6.3258 1.59349 67.00 0.53667 3.14 37.70 24 -56.7041 0.1202 37.99 25 43.7313 1.1000 1.90000 20.00 0.64194 3.55 37.35 26 31.2466 6.1542 1.52761 76.75 0.53881 3.63 36.11 27 132.3344 DD

[27] 35.70 28(St) 4.1061 34.17 29 54.7858 8.8608 1.53149 75.96 0.53902 3.64 33.99 30 20.6153 1.1102 1.53452 62.76 0.53886 2.80 34.33 31 79.2630 32.5221 35.55 32 90.7320 4.6932 1.84666 23.83 0.61603 5.51 36.50 33 113.8737 4.1538 36.41 34 31.6375 5.7743 1.48749 70.24 0.53007 2.46 32.26 35 468.6795 1.1000 1.88333 39.66 0.57136 5.00 31.21 36 22.0435 0.1415 28.14 37 20.5404 9.9374 1.51860 69.89 0.53184 2.60 28.53 38 54.2716 1.0001 1.91472 36.49 0.57933 5.21 27.67 39 19.4231 6.2945 1.52055 76.84 0.53809 3.52 26.31 40 94.2321 7.3940 26.89 41 33.9190 6.0120 1.53517 70.27 0.53660 3.25 33.32 42 3414.4267 39.7490 33.24 43 1.0000 1.51633 64.14 0.53531 2.52 29.87 44 1.1000 29.82

[0337] [Table 20]

[0338] Example 6

[0339]

[0340] [Table 21]

[0341] Practical example 6

[0342]

[0343] [Example 7]

[0344] The structure and movement trajectory of the zoom lens of Example 7 are shown in FIG. Figure 18The zoom lens of Example 7 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0345] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0346] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0347] Regarding the zoom lens of Example 7, basic lens data are shown in Table 22, specifications and variable surface spacing are shown in Table 23, aspheric coefficients are shown in Table 24, and various aberration diagrams are shown in Table 25. Figure 19 middle.

[0348] [Table 22] Example 7

[0349] Sn R D Nd vd θg,F SG ED 1 220.0379 2.1180 1.84909 36.26 0.58176 4.65 100.00 2 298.2667 2.3348 98.41 3 308.7502 12.5001 1.43387 95.18 0.53733 3.18 98.49 4 179.7676 0.1202 98.37 5 292.2042 8.2090 1.43700 95.10 0.53364 3.53 95.06 *6 347.6727 DD[6] 94.91 7 358.5340 4.0389 1.43387 95.18 0.53733 3.18 91.85 8 0.1200 91.44 9 161.2988 10.2555 1.43387 95.18 0.53733 3.18 88.06 10 349.9641 DD

[10] 87.74 *11 70.8798 9.1917 1.59282 68.62 0.54414 4.13 80.00 12 177.8674 DD

[12] 79.08 13 16070.4768 1.1000 2.00069 25.46 0.61364 4.73 29.37 14 23.4281 5.9125 25.20 15 48.7085 1.0102 1.82435 46.39 0.56221 5.24 24.89 16 33.0663 7.3050 1.83182 21.67 0.63201 3.65 24.77 17 27.0002 1.5659 24.72 18 22.8648 1.1001 1.85258 43.69 0.56441 5.37 22.84 *19 69.9843 DD

[19] 23.00 20 -43.4277 1.5987 1.84899 22.55 0.62898 3.65 30.03 21 -34.5854 1.1102 1.61775 66.30 0.54398 4.23 30.36 22 -235.2221 DD

[22] 31.75 23(St) 1.0000 32.50 24 71.1512 4.9789 1.69874 58.45 0.55241 4.64 34.98 *25 -99.4068 0.1201 35.26 26 56.7246 1.2150 1.90000 27.35 0.60754 4.49 35.90 27 32.2703 7.0896 1.43875 94.66 0.53402 3.59 35.07 28 933.8438 0.1200 35.23 29 67.1339 4.8062 1.59349 67.00 0.53667 3.14 35.54 30 213.7851 1.2100 1.59270 35.31 0.59336 2.64 35.31 31 84.8966 DD

[31] 34.82 32 80.5797 4.5966 1.84666 23.83 0.61603 5.51 35.86 33 137.4958 4.6359 35.73 34 33.4991 5.7134 1.48749 70.24 0.53007 2.46 31.82 35 632.6873 1.8314 1.91082 35.25 0.58224 4.97 30.67 36 19.8009 10.8114 1.50701 78.92 0.53730 3.47 27.28 37 69.8146 1.2970 26.70 38 45.1044 1.8071 1.88300 40.76 0.56679 5.52 26.44 39 30.6265 3.1159 1.52536 63.19 0.53764 2.73 26.94 40 71.2418 0.1964 27.38 41 37.9790 11.9841 1.48833 75.93 0.53274 3.02 28.70 42 51.6476 39.3324 30.01 43 1.0000 1.51633 64.14 0.53531 2.52 29.49 44 1.1000 29.48

[0350] [Table 23] Example 7

[0351]

[0352] [Table 24]

[0353] Example 7

[0354]

[0355] [Example 8]

[0356] The structure and movement trajectory of the zoom lens of Example 8 are shown in FIG. Figure 20 The zoom lens of Example 8 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0357] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0358] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0359] Regarding the zoom lens of Example 8, basic lens data are shown in Table 25, specifications and variable surface spacing are shown in Table 26, aspheric coefficients are shown in Table 27, and various aberration diagrams are shown in Table 28. Figure 21 middle.

[0360] [Table 25]

[0361] Example 8

[0362] Sn R D Nd vd θg,F SG ED 1 172.1030 2.8499 1.67820 36.07 0.58692 3.06 100.00 2 224.4542 1.4687 97.57 3 244.4908 12.8308 1.43387 95.18 0.53733 3.18 97.62 4 194.0722 0.1202 97.47 5 234.6500 7.4468 1.43700 95.10 0.53364 3.53 93.50 *6 603.9058 DD[6] 93.55 7 204.6136 6.6910 1.43387 95.18 0.53733 3.18 93.64 8 53779.1896 0.1202 93.47 9 192.3872 10.8446 1.43387 95.18 0.53733 3.18 92.35 10 282.8019 DD

[10] 91.94 11 77.2548 9.3675 1.59282 68.62 0.54414 4.13 80.01 *12 256.2324 DD

[12] 79.05 13 574.2363 1.1929 1.90366 31.31 0.59481 4.51 31.86 14 22.5831 7.2076 27.01 15 58.9751 1.0999 1.81600 46.62 0.55682 5.07 26.50 16 32.6806 7.7722 1.80809 22.76 0.63073 3.29 26.47 17 31.2325 2.1376 26.47 18 26.2768 1.4667 1.86249 42.73 0.56519 5.42 24.58 *19 112.1193 DD

[19] 24.90 20 -48.6583 2.0744 1.84666 23.83 0.61603 5.51 34.25 21 -38.5176 1.1448 1.65538 62.80 0.54374 4.39 34.71 22 -193.8617 DD

[22] 36.31 *23 91.0984 6.4207 1.59282 68.62 0.54414 4.13 38.07 24 -63.1947 0.1275 38.50 25 47.1135 1.4677 1.89237 20.39 0.63930 3.58 38.87 26 33.2746 7.7727 1.51991 78.30 0.53840 3.63 37.65 27 732.3081 DD

[27] 37.29 28(St) 12.5202 35.39 29 64.9424 1.0990 1.69125 47.48 0.55993 3.53 33.87 30 371.9596 3.5758 1.44610 93.18 0.53442 3.59 34.45 31 80.3174 19.0016 34.70 32 169.2054 4.4042 1.84666 23.83 0.61603 5.51 36.62 33 87.0798 5.6325 36.69 34 33.8164 6.1138 1.48749 70.24 0.53007 2.46 33.26 35 52062.9707 2.0404 1.91082 35.25 0.58224 4.97 32.30 36 20.0713 15.1213 1.55875 52.63 0.55458 2.74 28.87 37 77.2712 1.4850 28.18 38 50.6364 2.4033 1.88300 40.76 0.56679 5.52 27.89 39 31.9828 3.9118 1.56967 69.27 0.54082 3.59 28.56 40 103.7219 0.1203 29.05 41 36.5346 15.1698 1.48779 81.87 0.53600 3.40 30.82 42 76.4886 37.4200 31.90 43 1.0000 1.51633 64.14 0.53531 2.52 30.04 44 1.1000 30.01

[0363] [Table 26]

[0364] Example 8

[0365]

[0366] [Table 27]

[0367] Example 8

[0368]

[0369] [Example 9]

[0370] The structure and movement trajectory of the zoom lens of Example 9 are shown in FIG. Figure 22 The zoom lens of Example 9 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0371] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0372] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0373] Regarding the zoom lens of Example 9, basic lens data are shown in Table 28, specifications and variable surface spacing are shown in Table 29, aspheric coefficients are shown in Table 30, and various aberration diagrams are shown in Table 31. Figure 23 middle.

[0374] [Table 28] Example 9

[0375] Sn R D Nd vd θg,F SG ED 1 188.0843 2.0000 1.67300 38.26 0.57580 3.01 96.00 2 158.2632 1.0509 92.58 3 157.7165 12.6030 1.43387 95.18 0.53733 3.18 92.68 4 260.3266 0.2363 92.50 5 291.4633 8.2887 1.43700 95.10 0.53364 3.53 90.53 *6 275.5171 DD[6] 90.58 7 137.9250 8.8742 1.43387 95.18 0.53733 3.18 89.60 8 18333.5614 0.1203 89.26 9 358.2270 7.0042 1.43387 95.18 0.53733 3.18 88.21 10 323.1001 DD

[10] 87.81 *11 77.9831 8.6208 1.59349 67.00 0.53667 3.14 77.10 12 259.1530 DD

[12] 76.00 13 627.7558 1.1001 1.90366 31.31 0.59481 4.51 31.11 14 21.9441 6.6848 26.71 15 62.5211 1.0000 1.84850 43.79 0.56197 5.08 26.56 16 29.3558 8.8613 1.84666 23.83 0.61603 5.51 27.08 17 28.6773 1.9661 27.27 18 24.1274 1.1217 1.86741 42.26 0.56557 5.45 25.66 *19 103.4754 DD

[19] 26.37 20 53.4247 1.7795 1.89982 20.01 0.64188 3.55 34.57 21 -43.8216 1.1107 1.69942 58.39 0.55246 4.64 34.98 22 -176.8149 DD

[22] 36.32 *23 117.7819 6.4393 1.59349 67.00 0.53667 3.14 37.80 24 -52.2564 0.1202 38.24 25 42.8671 1.5058 1.89994 20.00 0.64192 3.55 38.29 26 32.6145 7.2150 1.52090 78.10 0.53845 3.63 37.04 27 108.5063 DD

[27] 36.32 28(St) 6.7132 35.46 29 71.2827 3.7352 1.53752 74.75 0.53935 3.64 34.85 30 48.3015 3.0102 1.54617 46.86 0.56651 2.49 35.08 31 109.8673 33.2248 35.54 32 160.2412 3.7458 1.84666 23.83 0.61603 5.51 35.91 33 111.4574 3.7781 35.93 34 32.5655 5.6389 1.48749 70.24 0.53007 2.46 33.41 35 171.7908 1.1090 1.91082 35.25 0.58224 4.97 32.43 36 22.2059 0.3860 29.63 37 22.6149 9.8622 1.48852 81.77 0.53608 3.40 30.03 38 56.1586 1.1100 1.88300 40.76 0.56679 5.52 29.77 39 28.8006 6.0061 1.59037 41.96 0.57503 2.57 29.91 40 120.8794 7.2218 30.63 41 43.6728 11.0416 1.48754 73.51 0.53150 2.90 36.69 42 85.2439 47.9287 36.94 43 1.0000 1.51633 64.14 0.53531 2.52 29.89 44 1.1000 29.80

[0376] [Table 29]

[0377] Example 9

[0378]

[0379] [Table 30]

[0380] Example 9

[0381]

[0382] [Example 10]

[0383] The structure and movement trajectory of the zoom lens of Example 10 are shown in FIG. Figure 24 The zoom lens of Example 10 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0384] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0385] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0386] Regarding the zoom lens of Example 10, basic lens data are shown in Table 31, specifications and variable surface spacing are shown in Table 32, aspheric coefficients are shown in Table 33, and various aberration diagrams are shown in Table 34. Figure 25 middle.

[0387] [Table 31] Example 10

[0388] Sn R D Nd vd θg,F SG ED 1 218.1579 2.1250 1.67300 38.26 0.57580 3.01 94.69 2 137.9201 1.4748 92.19 3 144.1647 13.8612 1.43387 95.18 0.53733 3.18 92.47 4 227.8710 0.1202 92.40 5 212.6095 8.7517 1.43700 95.10 0.53364 3.53 90.00 *6 351.9004 DD[6] 89.90 7 116.9796 13.6610 1.43387 95.18 0.53733 3.18 87.42 8 282.6993 DD[8] 86.77 *9 84.1675 8.2187 1.59282 68.62 0.54414 4.13 74.45 10 329.2305 DD

[10] 73.00 11 1106.0756 0.8400 1.91082 35.25 0.58335 4.85 30.97 12 22.0427 6.5912 26.66 13 56.3075 0.8208 1.84850 43.79 0.56197 5.08 26.52 14 29.6428 8.7026 1.85451 25.15 0.61031 3.48 26.96 15 28.6033 1.8971 27.11 16 24.0850 1.1000 1.84850 43.79 0.56197 5.08 25.42 *17 90.2154 DD

[17] 26.96 18 54.0662 1.7434 1.89286 20.36 0.63944 3.61 33.93 19 -44.1185 0.9700 1.69560 59.05 0.54348 4.56 34.32 20 175.2795 DD

[20] 35.50 *21 108.7408 6.4227 1.59349 67.00 0.53667 3.14 38.26 22 -55.6381 0.1201 38.67 23 40.7193 1.8285 1.89286 20.36 0.63944 3.61 38.76 24 30.5925 6.9848 1.49782 82.57 0.53862 3.86 37.18 25 107.4743 DD

[25] 36.64 26(St) 4.3278 35.48 27 73.4178 8.2706 1.53775 74.70 0.53936 3.64 35.19 28 -22.8507 1.1101 1.53996 59.46 0.54418 2.75 35.36 29 128.9818 35.8298 36.09 30 179.8388 4.6567 1.84666 23.83 0.61603 5.51 36.50 31 78.5691 5.8603 36.55 32 37.6459 6.8950 1.48749 70.24 0.53007 2.46 32.32 33 84.8306 1.1531 1.95487 32.51 0.58956 5.37 31.35 34 32.7520 0.4065 29.45 35 27.6433 9.7998 1.51860 69.89 0.53184 2.60 29.93 36 35.6227 1.0175 1.89673 38.30 0.57473 5.10 29.46 37 34.3322 4.9633 1.52754 48.06 0.56483 2.49 29.58 38 25029.8702 10.9196 30.00 39 53.8987 7.5459 1.54139 47.73 0.56496 2.49 35.60 40 148.9585 38.4923 35.60 41 5.7000 1.51633 64.14 0.53531 2.52 30.47 42 1.1000 29.98

[0389] [Table 32]

[0390] Example 10

[0391]

[0392] [Table 33]

[0393] Example 10

[0394]

[0395] [Example 11]

[0396] The structure and movement trajectory of the zoom lens of Example 11 are shown in FIG. Figure 26 The zoom lens of Example 11 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN comprises, in order from the object side toward the image side, a second lens group G2 having negative refractive power and a third lens group G3 having negative refractive power.

[0397] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the second lens group G2, the third lens group G3, the N lens group GN and the P lens group GP change the distance between them and the adjacent lens groups and move along the optical axis Z.

[0398] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0399] Regarding the zoom lens of Example 11, basic lens data are shown in Table 34, specifications and variable surface spacing are shown in Table 35, aspheric coefficients are shown in Table 36, and various aberration diagrams are shown in Table 37. Figure 27 middle.

[0400] [Table 34] Example 11

[0401] Sn R D Nd v d θg, F SG ED 1 258.5304 2.0001 1.67300 38.26 0.57580 3.01 96.00 2 130.9974 0.5157 92.61 3 127.9493 12.8646 1.43387 95.18 0.53733 3.18 92.71 4 404.1969 0.1199 92.50 5 211.5959 8.1332 1.43700 95.10 0.53364 3.53 91.00 *6 451.0328 DD[6] 90.84 7 127.8849 9.9604 1.43387 95.18 0.53733 3.18 87.67 8 1590.6811 0.1201 87.08 9 304.8791 6.5174 1.43387 95.18 0.53733 3.18 85.00 10 395.0507 DD

[10] 84.48 *11 81.2833 7.4455 1.59282 68.62 0.54414 4.13 73.24 12 264.4853 DD

[12] 72.06 13 613.1278 0.7225 1.92215 35.74 0.58126 5.25 30.43 14 21.8835 DD

[14] 26.62 15 60.9938 0.9100 1.84850 43.79 0.56197 5.08 26.52 16 28.9689 8.9627 1.85451 25.15 0.61031 3.48 27.30 17 29.4007 1.6934 27.61 18 24.6002 1.1001 1.85265 43.68 0.56442 5.37 26.76 *19 99.7692 DD

[19] 27.76 20 56.3163 1.8261 1.89999 20.00 0.64193 3.55 34.71 21 -44.9279 1.1101 1.74288 54.22 0.55585 4.85 35.08 22 -164.6680 DD

[22] 36.28 *23 104.8006 6.2139 1.59349 67.00 0.53667 3.14 37.70 24 -57.5580 0.1200 38.09 25 44.1441 1.5129 1.90000 20.00 0.64194 3.55 38.19 26 32.4310 6.1293 1.51494 79.30 0.53813 3.63 36.91 27 137.8870 DD

[27] 36.58 28(St) 3.8751 35.51 29 77.1267 8.1747 1.53410 75.44 0.53916 3.64 35.26 30 23.2166 1.1102 1.55073 54.68 0.55116 2.72 35.42 31 113.4981 33.4377 36.21 32 141.2113 4.4534 1.84666 23.83 0.61603 5.51 36.50 33 87.1104 6.4538 36.50 34 31.2081 6.4265 1.48749 70.24 0.53007 2.46 31.66 35 300.8290 1.1002 1.92331 35.67 0.58142 5.25 30.58 36 23.4205 0.4321 27.86 37 22.1115 9.7807 1.51860 69.89 0.53184 2.60 28.37 38 39.5229 1.1932 1.87288 40.71 0.56894 4.94 27.82 39 20.9177 9.0595 1.55083 72.18 0.53976 3.57 27.25 40 98.8025 3.0001 28.76 41 34.1963 6.9511 1.52157 50.96 0.55927 2.51 32.85 42 227.9827 39.5796 32.86 43 1.0000 1.51633 64.14 0.53531 2.52 29.98 44 1.1000 29.93

[0402] [Table 35]

[0403] Example 11

[0404]

[0405] [Table 36]

[0406] Example 11

[0407]

[0408] [Example 12]

[0409] The structure and movement trajectory of the zoom lens of Example 12 are shown in FIG. Figure 28 The zoom lens of Example 12 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN comprises, in order from the object side toward the image side, a second lens group G2 having negative refractive power and a third lens group G3 having positive refractive power.

[0410] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the second lens group G2, the third lens group G3, the N lens group GN and the P lens group GP change the distance between them and the adjacent lens groups and move along the optical axis Z.

[0411] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0412] Regarding the zoom lens of Example 12, basic lens data are shown in Table 37, specifications and variable surface spacing are shown in Table 38, aspheric coefficients are shown in Table 39, and various aberration diagrams are shown in Table 39. Figure 29 middle.

[0413] [Table 37] Example 12

[0414] Sn R D Nd v d θg, F SG ED 1 245.6948 2.0218 1.67300 38.26 0.57580 3.01 96.00 2 131.3710 0.6329 92.52 3 129.6831 13.3478 1.43387 95.18 0.53733 3.18 92.63 4 339.5895 0.1200 92.42 5 224.1186 8.0185 1.43700 95.10 0.53364 3.53 90.00 *6 400.7011 DD[6] 89.89 7 124.5941 9.4042 1.43387 95.18 0.53733 3.18 87.19 8 5463.8107 0.1198 86.65 9 328.3586 6.4981 1.43387 95.18 0.53733 3.18 85.00 10 360.2931 DD

[10] 84.54 *11 80.2761 7.6055 1.59282 68.62 0.54414 4.13 73.61 12 262.7366 DD

[12] 72.48 13 600.4326 0.5001 1.89753 38.25 0.57486 5.10 29.78 14 21.6965 6.2137 26.23 15 63.8472 0.9098 1.84850 43.79 0.56197 5.08 26.17 16 29.2110 4.5851 1.85451 25.15 0.61031 3.48 26.90 17 657.3323 DD

[17] 27.08 18 1774.0945 4.9919 1.85451 25.15 0.61031 3.48 27.51 19 29.1839 1.3764 27.71 20 24.9481 1.1000 1.88116 40.94 0.56664 5.51 26.98 *21 -109.2455 DD

[21] 27.96 22 -58.0874 1.8443 1.89999 20.00 0.64193 3.55 34.80 23 -45.1748 1.1098 1.76966 51.65 0.55794 4.98 35.15 24 -159.8647 DD

[24] 36.33 *25 108.4334 6.1197 1.59349 67.00 0.53667 3.14 37.70 26 57.0951 0.1198 38.08 27 44.0593 1.6492 1.90000 20.00 0.64194 3.55 38.21 28 31.5874 6.4961 1.52937 76.39 0.53891 3.64 36.81 29 132.8361 DD

[29] 36.42 30(St) 3.9371 35.52 31 78.8803 8.4605 1.52726 76.82 0.53879 3.63 35.28 32 22.9029 1.1303 1.54108 56.95 0.54760 2.73 35.43 33 114.5210 33.1100 36.21 34 143.0674 4.4989 1.84666 23.83 0.61603 5.51 36.50 35 85.0247 6.4005 36.50 36 31.5561 6.3540 1.48749 70.24 0.53007 2.46 31.54 37 274.7538 1.1226 1.91413 36.59 0.57905 5.20 30.46 38 23.3674 0.9035 27.71 39 22.0504 9.8207 1.51860 69.89 0.53184 2.60 28.49 40 40.0016 1.0042 1.88155 39.85 0.57090 4.99 27.90 41 20.8639 10.0119 1.55319 71.19 0.53954 3.52 27.25 42 101.1092 2.9724 29.00 43 34.3661 6.5047 1.52049 52.44 0.55636 2.54 33.00 44 241.6851 38.4991 33.00 45 1.0000 1.51633 64.14 0.53531 2.52 30.02 46 1.1000 29.97

[0415] [Table 38]

[0416] Example 12

[0417]

[0418] [Table 39]

[0419] Example 12

[0420]

[0421] [Example 13]

[0422] The structure and movement trajectory of the zoom lens of Example 13 are shown in FIG. Figure 30 The zoom lens of Example 13 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group. In addition to the aperture stop St, the zoom lens of Example 13 also has a sub-stop Stb.

[0423] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0424] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0425] Regarding the zoom lens of Example 13, basic lens data are shown in Table 40, specifications and variable surface spacing are shown in Table 41, aspheric coefficients are shown in Table 42, and various aberration diagrams are shown in Table 43. Figure 31 middle.

[0426] [Table 40] Example 13

[0427] Sn R D Nd v d θg, F SG ED 1 180.4431 2.1594 1.67300 38.26 0.57580 3.01 96.14 2 169.9391 1.2229 92.14 3 173.1223 11.1208 1.43387 95.18 0.53733 3.18 92.13 4 309.9827 0.1000 91.89 5 338.7821 8.1625 1.55032 75.50 0.54001 4.09 89.98 *6 256.7296 DD[6] 89.88 7 125.1868 11.4093 1.43387 95.18 0.53733 3.18 83.79 8 320.8118 DD[8] 83.43 *9 80.5866 9.5106 1.49700 81.61 0.53887 3.70 74.28 10(Stb) 5.0000 69.04 11 781.1673 DD

[11] 73.27 12 2280.9560 0.8007 1.87070 40.73 0.56825 4.84 32.72 13 21.4285 7.2951 27.55 14 51.8581 0.9372 1.75500 52.32 0.54757 4.17 27.43 15 46.7340 8.8310 1.75211 25.05 0.61924 3.14 27.93 16 25.3484 1.2241 28.20 17 22.5521 1.1038 1.72047 34.71 0.58350 3.19 27.10 *18 74.9595 DD

[18] 29.18 19 49.7639 2.0144 1.86966 20.02 0.64349 3.37 35.12 20 -41.5634 1.1258 1.57135 52.95 0.55544 2.98 35.61 21 184.8833 DD

[21] 36.91 22 99.7135 6.2240 1.74320 49.29 0.55303 4.20 42.03 *23 -79.8160 0.1002 42.09 24 53.9510 1.6454 1.86966 20.02 0.64349 3.37 41.22 25 33.2180 8.0549 1.48071 85.29 0.53623 3.68 39.43 26 1886.2908 DD

[26] 39.11 27(St) 1.0000 35.47 28 32.4451 8.5594 1.43700 95.10 0.53364 3.53 34.80 29 269.0199 1.0182 1.80400 46.53 0.55775 4.46 33.50 30 26.4378 3.3563 1.80809 22.76 0.63073 3.29 31.38 31 37.9889 39.0863 30.90 32 211.1131 4.9285 1.73800 32.33 0.59005 3.19 35.70 33 56.7975 5.7744 35.82 34 97.4909 5.6801 1.43700 95.10 0.53364 3.53 32.43 35 47.3140 1.0007 1.83481 42.74 0.56490 4.58 31.91 36 90.8084 0.0998 31.40 37 51.1629 5.3581 1.51633 64.14 0.53531 2.52 31.55 38 100.6880 2.3874 31.31 39 41.5430 1.0133 1.90366 31.31 0.59481 4.51 31.08 40 41.0683 5.7483 1.62004 36.26 0.58800 2.69 32.46 41 174.8305 7.1784 33.09 42 67.8365 9.6645 1.48749 70.44 0.53062 2.45 38.67 43 50.7956 34.2178 39.05 44 5.7000 1.51633 64.14 0.53531 2.52 30.84 45 1.1000 30.04

[0428] [Table 41] Example 13

[0429]

[0430] [Table 42]

[0431] Example 13

[0432]

[0433] [Example 13-1]

[0434] Example 13-1 is an example in which an EX group EX is inserted into the zoom lens of Example 13. The structure of the zoom lens of Example 13-1 and the cross-sectional view of the light beam are shown in FIG. Figure 32 The following EX group EX embodiments including this example are inserted with the following EX group EX embodiments. Figure 5 The zoom lens of Example 13-1 has a final lens group GEE in which the EX group EX is inserted inside the final lens group GE of Example 13, replacing the final lens group GE of Example 13. The other lens groups and group structures of Example 13-1 are the same as those of the zoom lens of Example 13.

[0435] Regarding the zoom lens of Example 13-1, basic lens data are shown in Tables 43A and 43B, specifications and variable surface spacing are shown in Table 44, aspheric coefficients are shown in Table 45, and various aberration diagrams are shown in Table 46. Figure 33 .

[0436] [Table 43A] Example 131

[0437] Sn R D Nd v d θg, F SG ED 1 180.4431 2.1594 1.67300 38.26 0.57580 3.01 96.14 2 169.9391 1.2229 92.14 3 173.1223 11.1208 1.43387 95.18 0.53733 3.18 92.14 4 309.9827 0.1000 91.89 5 338.7821 8.1625 1.55032 75.50 0.54001 4.09 89.98 *6 256.7296 DD[6] 89.88 7 125.1868 11.4093 1.43387 95.18 0.53733 3.18 83.79 8 320.8118 DD[8] 83.43 *9 80.5866 9.5106 1.49700 81.61 0.53887 3.70 74.28 10(Stb) 5.0000 69.04 11 781.1673 DD

[11] 73.27 12 2280.9560 0.8007 1.87070 40.73 0.56825 4.84 32.72 13 21.4285 7.2951 27.55 14 51.8581 0.9372 1.75500 52.32 0.54757 4.17 27.43 15 46.7340 8.8310 1.75211 25.05 0.61924 3.14 27.93 16 25.3484 1.2241 28.20 17 22.5521 1.1038 1.72047 34.71 0.58350 3.19 27.10 *18 74.9595 DD

[18] 29.18 19 49.7639 2.0144 1.86966 20.02 0.64349 3.37 35.12 20 -41.5634 1.1258 1.57135 52.95 0.55544 2.98 35.61 21 -184.8833 DD

[21] 36.91 22 99.7135 6.2240 1.74320 49.29 0.55303 4.20 42.03 *23 -79.8160 0.1002 42.09 24 53.9510 1.6454 1.86966 20.02 0.64349 3.37 41.22 25 33.2180 8.0549 1.48071 85.29 0.53623 3.68 39.43 26 1886.2908 DD

[26] 39.11

[0438] [Table 43B] Example 131

[0439] Sn R D Nd v d θg, F SG ED 27(St) 1.0000 35.47 28 32.4451 8.5594 1.43700 95.10 0.53364 3.53 33.62 29 269.0199 1.0182 1.80400 46.53 0.55775 4.46 31.66 30 26.4378 3.3563 1.80809 22.76 0.63073 3.29 29.16 31 37.9889 5.2164 28.42 32 25.7954 6.2113 1.48749 70.44 0.53062 2.45 27.66 33 188.7079 1.7019 27.20 34 54.5986 4.0736 1.48749 70.44 0.53062 2.45 25.41 35 64.7170 0.8086 1.83400 37.34 0.57908 4.57 24.74 36 21.7610 0.7870 23.18 37 26.3161 5.2157 1.60342 38.03 0.58356 2.63 23.27 38 74.1769 1.3119 23.20 39 71.1026 5.2609 1.73800 32.33 0.59005 3.19 22.84 40 16.9510 0.7158 1.72916 54.68 0.54451 4.18 22.81 41 36.2909 7.7833 22.63 42 211.1131 4.9285 1.73800 32.33 0.59005 3.19 26.11 43 56.7975 5.7744 26.85 44 97.4909 5.6801 1.43700 95.10 0.53364 3.53 27.52 45 -47.3140 1.0007 1.83481 42.74 0.56490 4.58 27.44 46 90.8084 0.0998 27.87 47 51.1629 5.3581 1.51633 64.14 0.53531 2.52 28.36 48 -100.6880 2.3874 28.60 49 -41.5430 1.0133 1.90366 31.31 0.59481 4.51 28.60 50 41.0683 5.7483 1.62004 36.26 0.58800 2.69 30.86 51 -174.8305 7.1784 32.03 52 67.8365 9.6645 1.48749 70.44 0.53062 2.45 41.62 53 50.7956 34.2178 42.17 54 5.7000 1.51633 64.14 0.53531 2.52 42.74 55 1.1000 42.79

[0440] [Table 44] Example 131

[0441]

[0442] [Table 45]

[0443] Example 131

[0444]

[0445] [Example 14]

[0446] The structure and movement trajectory of the zoom lens of Example 14 are shown in FIG. Figure 34 The zoom lens of Example 14 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0447] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0448] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, sub-group 1b G1b moves toward the image side, and sub-group 1c G1c moves toward the object side.

[0449] Regarding the zoom lens of Example 14, basic lens data are shown in Table 46, specifications and variable surface spacing are shown in Table 47, aspheric coefficients are shown in Tables 48A and 48B, and various aberration diagrams are shown in Table 48. Figure 35 .

[0450] [Table 46] Example 14

[0451] Sn R D Nd v d θg, F SG ED 1 3532.9627 2.2092 1.76372 33.76 0.59134 3.76 99.00 2 101.5960 2.6330 92.62 *3 128.7910 10.1358 1.49700 81.54 0.53748 3.62 92.52 4 1085.8625 DD[4] 92.19 5 72.5289 9.1260 1.43875 94.66 0.53402 3.59 86.42 6 143.1459 DD[6] 85.94 7 76.7105 13.0056 1.43875 94.66 0.53402 3.59 81.83 8 2705.5282 0.1998 80.77 *9 75.1108 8.4778 1.59282 68.62 0.54414 4.13 74.87 10 572.2175 DD

[10] 73.91 11 555.5545 1.2046 1.88290 36.69 0.57961 4.97 32.82 12 20.7772 7.3884 27.02 13 66.4869 0.7848 1.85102 42.86 0.56429 4.80 26.57 14 32.1397 7.3714 1.84790 23.65 0.62149 3.63 26.39 15 30.6561 1.8886 26.33 16 25.0002 0.7500 1.80610 40.93 0.57019 4.43 25.11 *17 123.7860 DD

[17] 25.57 18 61.4924 3.9508 1.86576 22.37 0.63014 3.66 32.27 19 29.6028 0.9998 1.93220 34.78 0.58371 5.30 32.66 20 140.5464 DD

[20] 34.41 *21 129.5067 4.2588 1.59349 67.00 0.53667 3.14 37.95 22 -100.6875 0.1800 38.42 23 62.4569 7.2330 1.59250 68.67 0.54339 3.70 40.07 24 -78.6003 0.3684 39.98 25 41.3882 5.9225 1.49733 81.49 0.53750 3.55 36.81 26 459.3964 1.0059 1.87300 31.85 0.59398 4.69 36.04 27 45.9386 DD

[27] 33.91 28(St) 1.6864 33.30 29 42.6659 5.4639 1.68282 33.95 0.59304 3.01 32.38 30 116.4542 1.0098 1.68015 38.82 0.57926 3.15 30.93 31 31.6806 36.9151 29.36 32 68.1602 6.6109 1.57003 45.00 0.56944 2.56 35.51 33 56.0182 3.3066 35.52 34 69.9628 6.0447 1.48749 70.24 0.53007 2.46 32.36 35 46.4990 0.9000 1.88300 40.76 0.56679 5.52 31.80 36 41.5406 6.7215 30.73 37 43.4171 12.2407 1.53658 63.59 0.53787 2.84 33.76 38 23.8550 1.5002 1.81600 46.62 0.55682 5.07 33.69 39 79.3215 9.3991 35.38 40 35.4358 3.0728 1.46056 89.39 0.53495 3.46 36.05 41 27.8587 1.0000 36.56 42 2.0000 1.51633 64.14 0.53531 2.52 35.58 43 30.2843 35.42 44 5.7000 1.51633 64.14 0.53531 2.52 31.65 45 1.1000 31.18

[0452] [Table 47] Example 14

[0453]

[0454] [Table 48A] Example 14

[0455]

[0456] [Table 48B]

[0457] Example 14

[0458] Sn 21 KA 1.000000000000000E+00 A4 2.774598240000000E-06 A6 4.228796500000000E-10 A8 2.294709060000000E 11 A10 8.488245470000000E-13 A12 1.183175850000000E-14 A14 8.793456270000000E-17 A16 3.803318690000000E-19 A18 9.613473970000000E-22 A20 1.318341560000000E-24 A22 7.582328140000000E-28

[0459] [Example 14-1]

[0460] Example 14-1 is an example in which an EX group EX is inserted into the zoom lens of Example 14. The structure of the zoom lens of Example 14-1 and the cross-sectional view of the light beam are shown in FIG. Figure 36 The zoom lens of Example 14-1 has a final lens group GEE in which the EX group EX is inserted inside the final lens group GE of Example 14, replacing the final lens group GE of Example 14. The other lens groups and group structures of Example 14-1 are the same as those of the zoom lens of Example 14.

[0461] Regarding the zoom lens of Example 14-1, basic lens data are shown in Tables 49A and 49B, specifications and variable surface spacing are shown in Table 50, aspheric coefficients are shown in Tables 51A and 51B, and various aberration diagrams are shown in Table 51.Figure 37 middle.

[0462] [Table 49A] Example 141

[0463] Sn R D Nd v d θg, F SG ED 1 3532.9627 2.2092 1.76372 33.76 0.59134 3.76 99.00 2 101.5960 2.6330 92.59 *3 128.7910 10.1358 1.49700 81.54 0.53748 3.62 92.52 4 1085.8625 DD[4] 92.21 5 72.5289 9.1260 1.43875 94.66 0.53402 3.59 86.42 6 143.1459 DD[6] 85.94 7 76.7105 13.0056 1.43875 94.66 0.53402 3.59 81.82 8 2705.5282 0.1998 80.77 *9 75.1108 8.4778 1.59282 68.62 0.54414 4.13 74.87 10 572.2175 DD

[10] 73.91 11 555.5545 1.2046 1.88290 36.69 0.57961 4.97 32.48 12 20.7772 7.3884 26.89 13 66.4869 0.7848 1.85102 42.86 0.56429 4.80 26.45 14 32.1397 7.3714 1.84790 23.65 0.62149 3.63 26.36 15 30.6561 1.8886 26.33 16 25.0002 0.7500 1.80610 40.93 0.57019 4.43 25.07 *17 123.7860 DD

[17] 25.57 18 61.4924 3.9508 1.86576 22.37 0.63014 3.66 32.23 19 -29.6028 0.9998 1.93220 34.78 0.58371 5.30 32.63 20 -140.5464 DD[ 34.38 *21 129.5067 4.2588 1.59349 67.00 0.53667 3.14 37.95 22 -100.6875 0.1800 38.37 23 62.4569 7.2330 1.59250 68.67 0.54339 3.70 39.73 24 -78.6003 0.3684 39.60 25 41.3882 5.9225 1.49733 81.49 0.53750 3.55 36.19 26 459.3964 1.0059 1.87300 31.85 0.59398 4.69 35.32 27 45.9386 ​ 33.29

[0464] [Table 49B]

[0465] Example 14-1

[0466] ​ R D ​ ​ ​ ​ ​ ​ 1.6864 32.79 29 42.6659 5.4639 1.68282 33.95 0.59304 3.01 31.80 30 116.4542 1.0098 1.68015 38.82 0.57926 3.15 30.33 31 31.6806 4.5518 28.83 32 36.0223 2.8752 1.57561 49.12 0.56085 2.73 28.62 33 66.5821 0.9999 28.13 34 30.6443 4.5802 1.51831 57.18 0.54786 2.59 27.34 35 2014.1432 0.2661 26.61 36 52.2869 0.9089 1.99358 22.56 0.63220 4.27 25.16 37 18.5078 6.6572 1.61344 37.13 0.58575 2.56 23.47 38 274.3876 0.5686 22.96 39 149.2504 1.1111 1.86531 39.59 0.57206 4.84 22.80 40 17.1502 4.7904 1.86633 21.77 0.63270 3.64 22.03 41 101.5103 0.5233 21.84 42 356.8009 1.5002 1.85780 41.75 0.56683 4.86 21.84 43 32.7737 7.5891 21.64 44 68.1602 6.6109 1.57003 45.00 0.56944 2.56 25.29 45 56.0182 3.3066 25.99 46 69.9628 6.0447 1.48749 70.24 0.53007 2.46 26.08 47 -46.4990 0.9000 1.88300 40.76 0.56679 5.52 25.74 48 41.5406 6.7215 25.89 49 43.4171 12.2407 1.53658 63.59 0.53787 2.84 31.35 50 -23.8550 1.5002 1.81600 46.62 0.55682 5.07 31.81 51 -79.3215 9.3991 33.97 52 -35.4358 3.0728 1.46056 89.39 0.53495 3.46 36.05 53 -27.8587 1.0000 36.72 54 2.0000 1.51633 64.14 0.53531 2.52 38.02 55 30.2591 38.23 56 5.7000 1.51633 64.14 0.53531 2.52 43.18 57 1.1000 43.80

[0467] [Table 50] Example 141

[0468]

[0469] [Table 51A]

[0470] Example 14-1

[0471]

[0472] [Table 51B]

[0473] Example 141

[0474] ​ 21 ​ 1.000000000000000E+00 A4 2.774598240000000E-06 A6 4.228796500000000E-10 A8 2.294709060000000E-11 A10 8.488245470000000E-13 A12 1.183175850000000E-14 A14 8.793456270000000E-17 A16 3.803318690000000E-19 A18 9.613473970000000E-22 A20 1.318341560000000E-24 A22 7.582328140000000E-28

[0475] [Example 15]

[0476] The structure and movement trajectory of the zoom lens of Example 15 are shown in FIG. ​ The zoom lens of Example 15 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0477] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0478] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0479] Regarding the zoom lens of Example 15, basic lens data are shown in Table 52, specifications and variable surface spacing are shown in Table 53, aspheric coefficients are shown in Table 54, and various aberration diagrams are shown in Table 55. ​ middle.

[0480] [Table 52] Example 15

[0481] ​ R D ​ ​ ​ ​ ​ 1 224.8704 2.1300 1.65412 39.68 0.57378 3.02 96.00 2 128.3067 1.1315 92.65 3 128.0728 13.6054 1.43387 95.18 0.53733 3.18 92.85 4 325.0488 0.1200 92.66 5 189.8846 8.2244 1.43700 95.10 0.53364 3.53 90.00 *6 590.7915 ​ 89.91 7 153.2455 8.4984 1.43387 95.18 0.53733 3.18 88.40 8 1528.9101 0.1201 88.03 9 357.1650 6.9719 1.43387 95.18 0.53733 3.18 86.63 10 306.1921 ​ 86.16 *11 76.7734 8.9821 1.53775 74.70 0.53936 3.64 74.08 12 344.0407 ​ 72.75 13 1215.8341 0.8000 1.91082 35.25 0.58335 4.85 30.49 14 22.3336 6.5621 26.26 15 53.8645 0.7601 1.84850 43.79 0.56197 5.08 26.05 16 33.0010 8.0062 1.85451 25.15 0.61031 3.48 26.43 17 27.4402 1.7973 26.55 18 23.5436 0.9002 1.81600 46.59 0.55661 4.99 24.71 *19 98.8409 ​ 26.20 20 -54.4130 1.7423 1.89286 20.36 0.63944 3.61 34.61 21 44.3831 1. 1237 1. 69560 59.05 0.54348 4.56 35.00 22 -171.4478 ​ 36.30 *23 108.1279 6.4252 1.55397 71.76 0.53931 3.66 37.70 24 -54.3620 0.1202 38.11 25 44.8167 1.2500 1.86966 20.02 0.64349 3.37 38.25 26 34.4790 7.1886 1.48071 85.29 0.53623 3.68 37.24 27 201.0193 ​ 36.72 ​ 8.5703 35.50 29 69.5057 3.5486 1.53775 74.70 0.53936 3.64 34.61 30 41.9734 2.0807 1.54072 47.23 0.56511 2.52 34.82 31 117.0194 36.4639 35.38 32 154.0186 4.2398 1.84666 23.83 0.61603 5.51 36.50 33 91.7817 3.4192 36.52 34 34.3745 6.4895 1.48749 70.24 0.53007 2.46 33.39 35 281.1904 1.1186 1.94151 33.77 0.58532 5.11 32.43 36 27.7228 0.3922 30.03 37 25.8599 10.3329 1.51860 69.89 0.53184 2.60 30.44 38 38.6059 1.0000 1.88732 39.27 0.57012 4.83 29.91 39 29.0562 5.4519 1.56994 50.50 0.55980 3.22 29.81 40 314.4743 9.3232 30.21 41 50.4457 7.5782 1.52091 51.22 0.55877 2.51 35.51 42 135.4577 40.1258 35.55 43 5.7000 1.51633 64.14 0.53531 2.52 30.49 44 1.1000 30.03

[0482] [Table 53]

[0483] Example 15

[0484]

[0485] [Table 54]

[0486] Example 15

[0487]

[0488] [Example 15-1]

[0489] Example 15-1 is an example in which an EX group EX is inserted into the zoom lens of Example 15. The structure of the zoom lens of Example 15-1 and the cross-sectional view of the light beam are shown in FIG. ​ The zoom lens of Example 15-1 has a final lens group GEE in which the EX group EX is inserted inside the final lens group GE of Example 15, replacing the final lens group GE of Example 15. The other lens groups and group structures of Example 15-1 are the same as those of the zoom lens of Example 15.

[0490] Regarding the zoom lens of Example 15-1, basic lens data are shown in Tables 55A and 55B, specifications and variable surface spacing are shown in Table 56, aspheric coefficients are shown in Table 57, and various aberration diagrams are shown in Table 58. ​ .

[0491] [Table 55A]

[0492] Example 15-1

[0493] ​ R D ​ ​ ​ ​ ​ 1 224.8704 2.1300 1.65412 39.68 0.57378 3.02 96.00 2 128.3067 1.1315 92.60 3 128.0728 13.6054 1.43387 95.18 0.53733 3.18 92.81 4 325.0488 0.1200 92.62 5 189.8846 8.2244 1.43700 95.10 0.53364 3.53 90.00 *6 590.7915 ​ 89.91 7 153.2455 8.4984 1.43387 95.18 0.53733 3.18 88.41 8 1528.9101 0.1201 88.05 9 357.1650 6.9719 1.43387 95.18 0.53733 3.18 86.64 10 306.1921 ​ 86.17 *11 76.7734 8.9821 1.53775 74.70 0.53936 3.64 74.08 12 344.0407 ​ 72.75 13 1215.8341 0.8000 1.91082 35.25 0.58335 4.85 30.49 14 22.3336 6.5621 26.23 15 53.8645 0.7601 1.84850 43.79 0.56197 5.08 26.03 16 33.0010 8.0062 1.85451 25.15 0.61031 3.48 26.41 17 -27.4402 1.7973 26.54 18 -23.5436 0.9002 1.81600 46.59 0.55661 4.99 24.71 *19 -98.8409 ​ 26.12 20 -54.4130 1.7423 1.89286 20.36 0.63944 3.61 34.61 21 -44.3831 1.1237 1.69560 59.05 0.54348 4.56 35.00 22 -171.4478 ​ 36.30 *23 108.1279 6.4252 1.55397 71.76 0.53931 3.66 37.70 24 54.3620 0.1202 38.09 25 44.8167 1.2500 1.86966 20.02 0.64349 3.37 38.00 26 34.4790 7.1886 1.48071 85.29 0.53623 3.68 36.97 27 201.0193 ​ 36.37

[0494] [Table 55B] Example 151

[0495] ​ R D ​ ​ ​ ​ ​ ​ 8.5703 35.25 29 69.5057 3.5486 1.53775 74.70 0.53936 3.64 33.62 30 41.9734 2.0807 1.54072 47.23 0.56511 2.52 33.65 31 117.0194 0.8000 33.72 32 32.4141 6.0233 1.57487 62.43 0.54107 3.25 32.86 33 448.9909 0.3007 32.17 34 41.9553 0.9008 2.00069 25.46 0.61364 4.73 30.55 35 24.5370 7.7492 1.53568 53.13 0.55498 3.05 28.76 36 110.1479 0.8047 27.74 37 101.6710 0.8816 1.89759 38.21 0.57280 4.88 27.02 38 17.0622 6.7842 1.78705 26.09 0.60955 4.34 24.82 39 140.3866 1.3479 24.41 40 236.9704 2.0283 1.62004 36.26 0.58800 2.69 24.18 41 122.8694 0.9298 1.61800 63.39 0.54015 3.52 23.99 42 32.2895 7.9144 23.39 43 154.0186 4.2398 1.84666 23.83 0.61603 5.51 26.19 44 91.7817 3.4192 26.61 45 34.3745 6.4895 1.48749 70.24 0.53007 2.46 26.90 46 -281.1904 1.1186 1.94151 33.77 0.58532 5.11 26.04 47 27.7228 0.3922 25.30 48 25.8599 10.3329 1.51860 69.89 0.53184 2.60 25.91 49 -38.6059 1.0000 1.88732 39.27 0.57012 4.83 26.00 50 29.0562 5.4519 1.56994 50.50 0.55980 3.22 27.01 51 314.4743 9.3232 28.04 52 50.4457 7.5782 1. 52091 51.22 0.55877 2.51 37.59 53 -135.4577 40.1318 38.00 54 5.7000 1.51633 64.14 0.53531 2.52 42.32 55 1.1000 42.71

[0496] [Table 56]

[0497] Example 15-1

[0498]

[0499] [Table 57]

[0500] Example 15-1

[0501]

[0502] [Example 16]

[0503] The structure and movement trajectory of the zoom lens of Example 16 are shown in FIG. ​ The zoom lens of Example 16 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0504] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0505] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, while sub-group 1b G1b and sub-group 1c G1c move toward the object by varying the spacing between them.

[0506] Regarding the zoom lens of Example 16, basic lens data are shown in Table 58, specifications and variable surface spacing are shown in Table 59, aspheric coefficients are shown in Table 60, and various aberration diagrams are shown in Table 61. ​ middle.

[0507] [Table 58] Example 16

[0508] ​ R D ​ ​ ​ ​ ​ 1 219.9141 2.1400 1.67300 38.26 0.57580 3.01 95.80 2 141.7201 0.7509 91.78 3 137.6314 13.0159 1.43387 95.18 0.53733 3.18 91.86 4 290.3780 0.1200 91.64 5 177.4369 7.8643 1.43700 95.10 0.53364 3.53 90.00 *6 833.1142 ​ 89.88 7 146.6775 9.6572 1.43387 95.18 0.53733 3.18 88.15 8 615.9656 0.1202 87.73 9 268.1697 6.7157 1.43387 95.18 0.53733 3.18 85.00 10 432.5115 ​ 84.60 *11 78.0402 7.6782 1.59282 68.62 0.54414 4.13 74.09 12 236.0208 ​ 73.00 13 471.8263 0.8999 1.95375 32.32 0.59056 4.94 30.85 14 21.2808 6.6654 26.42 15 53.9699 0.9100 1.84850 43.79 0.56197 5.08 26.31 16 28.2303 9.1146 1.85451 25.15 0.61031 3.48 26.93 17 27.8146 1.6591 27.14 18 23.3928 1.1000 1.80400 46.58 0.55730 4.72 25.86 *19 86.6851 ​ 26.50 20 -55.7254 1.6117 1.95906 17.47 0.65993 3.59 36.26 21 47.0266 1.1101 1. 72916 54.67 0.54534 4.05 36.65 22 -163.1027 ​ 38.00 *23 107.0111 6.3493 1.59349 67.00 0.53667 3.14 40.00 24 -55.3986 0.1199 40.23 25 40.0976 1.4998 1.89286 20.36 0.63944 3.61 39.62 26 30.4237 6.6997 1.48071 85.29 0.53623 3.68 38.01 27 98.6738 ​ 37.47 ​ 4.1986 35.50 29 66.5766 8.0198 1.53775 74.70 0.53936 3.64 35.25 30 22.9127 1.8655 1.53996 59.46 0.54418 2.75 35.46 31 108.9438 35.9169 36.40 32 170.4921 4.3958 1.84666 23.83 0.61603 5.51 36.61 33 80.9133 4.3899 36.50 34 31.4108 6.8688 1.48749 70.24 0.53007 2.46 32.42 35 201.1839 1.1000 1.93240 34.76 0.58376 5.30 31.32 36 25.6967 0.1201 28.69 37 23.2174 10.3854 1.51860 69.89 0.53184 2.60 29.04 38 37.1983 1.1006 1.95172 32.83 0.58874 5.36 28.32 39 25.1426 7.2968 1.66861 31.22 0.60144 2.85 28.06 40 115.4639 5.1495 28.83 41 47.7239 9.0433 1.54183 47.16 0.56609 2.47 32.50 42 107.4568 39.2482 32.78 43 5.7000 1.51633 64.14 0.53531 2.52 29.49 44 1.1000 29.18

[0509] [Table 59]

[0510] Example 16

[0511]

[0512] [Table 60]

[0513] Example 16

[0514]

[0515] [Example 16-1]

[0516] Example 16-1 is an example in which an EX group EX is inserted into the zoom lens of Example 16. The structure of the zoom lens of Example 16-1 and the cross-sectional view of the light beam are shown in FIG. ​ The zoom lens of Example 16-1 has a final lens group GEE in which the EX group EX is inserted inside the final lens group GE of Example 16, replacing the final lens group GE of Example 16. The other lens groups and group structures of Example 16-1 are the same as those of the zoom lens of Example 16.

[0517] Regarding the zoom lens of Example 16-1, basic lens data are shown in Tables 61A and 61B, specifications and variable surface spacing are shown in Table 62, aspheric coefficients are shown in Table 63, and various aberration diagrams are shown in Table 64. ​ .

[0518] [Table 61A] Example 161

[0519] ​ R D ​ ​ ​ ​ ​ 1 219.9141 2.1400 1.67300 38.26 0.57580 3.01 95.80 2 141.7201 0.7509 91.79 3 137.6314 13.0159 1.43387 95.18 0.53733 3.18 91.87 4 290.3780 0.1200 91.64 5 177.4369 7.8643 1.43700 95.10 0.53364 3.53 90.00 *6 833.1142 ​ 89.88 7 146.6775 9.6572 1.43387 95.18 0.53733 3.18 87.86 8 615.9656 0.1202 87.43 9 268.1697 6.7157 1.43387 95.18 0.53733 3.18 85.00 10 432.5115 ​ 84.49 *11 78.0402 7.6782 1.59282 68.62 0.54414 4.13 74.12 12 236.0208 ​ 73.00 13 471.8263 0.8999 1.95375 32.32 0.59056 4.94 30.85 14 21.2808 6.6654 26.42 15 53.9699 0.9100 1.84850 43.79 0.56197 5.08 26.31 16 28.2303 9.1146 1.85451 25.15 0.61031 3.48 26.93 17 27.8146 1.6591 27.14 18 23.3928 1.1000 1.80400 46.58 0.55730 4.72 25.86 *19 86.6851 ​ 26.50 20 -55.7254 1.6117 1.95906 17.47 0.65993 3.59 36.26 21 -47.0266 1.1101 1.72916 54.67 0.54534 4.05 36.65 22 -163.1027 ​ 38.00 *23 107.0111 6.3493 1.59349 67.00 0.53667 3.14 40.00 24 -55.3986 0.1199 40.20 25 40.0976 1.4998 1.89286 20.36 0.63944 3.61 39.13 26 30.4237 6.6997 1.48071 85.29 0.53623 3.68 37.50 27 98.6738 ​ 36.93

[0520] [Table 61B] Example 161

[0521] ​ R D ​ ​ ​ ​ ​ ​ 4.1986 35.50 29 66.5766 8.0198 1.53775 74.70 0.53936 3.64 34.92 30 22.9127 1.8655 1.53996 59.46 0.54418 2.75 34.92 31 108.9438 0.9069 34.91 32 35.9509 4.6762 1.82163 38.31 0.57679 4.50 34.00 33 146.6405 0.6182 33.36 34 42.6998 1.1002 1.96212 20.05 0.63403 5.25 31.50 35 23.1273 7.9390 1.48750 76.66 0.51950 2.80 29.10 36 118.8790 0.1200 28.13 37 159.7073 1.1213 1.96994 31.01 0.59420 5.25 27.80 38 19.0603 6.3369 1.88294 20.85 0.62780 4.84 25.52 39 206.5828 1.6331 25.01 40 182.2120 1.1000 1.75500 52.32 0.54757 4.17 24.29 41 21.2033 2.5316 1.75211 25.05 0.61924 3.14 23.11 42 31.9941 7.8340 22.80 43 170.4921 4.3958 1.84666 23.83 0.61603 5.51 25.37 44 80.9133 4.3899 25.81 45 31.4108 6.8688 1.48749 70.24 0.53007 2.46 25.85 46 -201.1839 1.1000 1.93240 34.76 0.58376 5.30 24.79 47 25.6967 0.1201 23.95 48 23.2174 10.3854 1.51860 69.89 0.53184 2.60 24.39 49 -37.1983 1.1006 1.95172 32.83 0.58874 5.36 24.25 50 25.1426 7.2968 1.66861 31.22 0.60144 2.85 25.10 51 115.4639 5.1495 26.84 52 47.7239 9.0433 1..54183 47.16 0.56609 2.47 32.98 53 -107.4568 39.2183 33.99 54 5.7000 1.51633 64.14 0.53531 2.52 41.96 55 1.1000 42.69

[0522] [Table 62] Example 161

[0523]

[0524] [Table 63]

[0525] Example 161

[0526]

[0527] [Example 17]

[0528] The structure and movement trajectory of the zoom lens of Example 17 are shown in FIG. ​ The zoom lens of Example 17 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0529] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0530] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, and sub-group 1c G1c. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, sub-group 1b G1b moves toward the image side, and sub-group 1c G1c moves toward the object side.

[0531] Regarding the zoom lens of Example 17, basic lens data are shown in Table 64, specifications and variable surface spacing are shown in Table 65, aspheric coefficients are shown in Tables 66A and 66B, and various aberration diagrams are shown in Table 66. ​ .

[0532] [Table 64] Example 17

[0533] ​ R D ​ ​ ​ ​ ​ 1 1178.2304 1.9998 1.76634 35.82 0.57931 3.47 93.40 2 107.6021 1.5409 87.51 *3 135.9162 9.6076 1.49700 81.54 0.53748 3.62 87.48 4 14478.3163 ​ 87.23 5 73.9988 8.8297 1.43387 95.18 0.53733 3.18 82.93 6 161.3281 ​ 82.57 7 79.6344 12.3972 1.43387 95.18 0.53733 3.18 80.31 8 272400.4304 0.1998 79.45 *9 77.2313 8.1230 1.59282 68.62 0.54414 4.13 74.03 10 556.1671 ​ 73.11 11 558.8955 0.8498 1.88100 40.14 0.57010 5.40 31.15 12 20.1741 7.1135 26.09 13 78.1414 2.0102 1.79952 42.22 0.56727 4.41 25.62 14 33.2555 6.8040 1.80518 25.42 0.61616 3.37 25.33 15 30.0844 1.5441 25.25 16 25.0656 0.7498 1.80420 46.50 0.55727 4.40 24.76 *17 113.2659 ​ 25.85 18 59.8607 3.9794 1.84666 23.78 0.62054 3.54 32.19 19 -29.1027 0.9998 1.90043 37.37 0.57720 5.19 32.58 20 145.9512 ​ 34.34 *21 137.8782 3.9998 1.61800 63.39 0.54015 3.52 37.86 22 -99.9991 0.1801 38.25 23 62.7253 7.0923 1.59282 68.62 0.54414 4.13 39.78 24 -79.9442 0.1798 39.69 25 42.6986 5.3745 1.49700 81.54 0.53748 3.62 36.68 26 -3217.3411 1.3794 1.87409 30.55 0.60188 4.55 35.97 27 43.9797 ​ 33.71 ​ 9.2269 33.30 29 42.1382 2.4493 1.67270 32.10 0.59891 2.91 31.43 30 60.8606 1.0138 1.67003 47.23 0.56276 3.48 30.88 31 32.9173 32.8150 29.87 32 59.1585 7.0284 1.58267 46.60 0.56688 2.91 37.54 33 70.1407 0.7501 37.47 34 40.0771 6.4645 1.48749 70.24 0.53007 2.46 34.45 35 105.1110 0.8999 1.88300 40.76 0.56679 5.52 33.73 36 37.3507 5.8866 31.55 37 189.6900 7.2765 1.56888 62.96 0.53742 3.06 31.83 38 27.2638 0.9999 1.81600 46.62 0.55682 5.07 31.83 39 2409.4802 9.3874 32.97 40 95.7036 5.8052 1.45650 90.27 0.53477 3.60 36.70 41 63.5115 43.2605 36.83

[0534] [Table 65] Example 17

[0535]

[0536] [Table 66A] Example 17

[0537]

[0538] [Table 66B]

[0539] Example 17

[0540] ​ 21 ​ 1.000000000000000E+00 A4 2.642036405366130E-06 A6 7.628567578787460E-10 A8 2.145588069135180E-11 A10 8.480536757388010E-13 A12 1.184284212554910E-14 A14 8.794249434335040E-17 A16 3.802582701102840E-19 A18 9.613917553087650E-22 A20 1.319225113332250E-24 A22 7.594625362423640E-28

[0541] [Example 18]

[0542] The structure and movement trajectory of the zoom lens of Example 18 are shown in FIG. ​ The zoom lens of Example 18 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0543] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0544] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, sub-group 1c G1c, and sub-group 1d G1d. When focusing from an object at infinity to the closest object, sub-group 1a G1a is fixed relative to the image plane Sim, sub-groups 1b G1b and 1c G1c move toward the image side by varying the spacing between them, and sub-group 1d G1d moves toward the object side.

[0545] Regarding the zoom lens of Example 18, basic lens data are shown in Table 67, specifications and variable surface spacing are shown in Table 68, aspheric coefficients are shown in Table 69, and various aberration diagrams are shown in Table 61. ​ middle.

[0546] [Table 67]

[0547] Example 18

[0548] ​ R D ​ ​ ​ ​ ​ 1 293.1344 2.0002 1.80610 40.97 0.56882 4.31 94.54 2 98.8570 4.3522 86.98 3 96.0703 3.1894 1.80809 22.76 0.63073 3.29 87.62 4 118.1719 ​ 87.26 *5 235.3739 10.6249 1.49700 81.54 0.53748 3.62 87.20 6 180.8965 ​ 87.03 7 512.8863 2.5000 1.80809 22.76 0.63073 3.29 82.00 8 133.9475 10.7750 1.49700 81.54 0.53748 3.62 82.57 9 293.5253 ​ 82.87 10 93.4067 16.4998 1.43387 95.18 0.53733 3.18 85.98 11 199.3054 0.2002 85.70 *12 128.2936 5.8167 1.72825 28.46 0.60772 3.06 81.01 13 552.1734 ​ 80.50 14 195.6991 0.8500 1.72342 37.95 0.58370 3.67 36.40 15 22.7393 11.5080 30.47 16 42.8730 0.7600 1.80400 46.53 0.55775 4.46 28.77 17 114.4392 5.9999 1.80518 25.42 0.61616 3.37 28.94 18 30.4880 2.3711 29.00 19 -24.5451 0.7500 1.54678 62.74 0.53735 2.84 27.45 *20 123.2853 ​ 27.63 21 -57.4584 4.2192 1.80518 25.42 0.61616 3.37 34.01 22 -29.2402 1.0002 1.84850 43.79 0.56197 5.08 34.40 23 -175.8450 ​ 36.37 *24 77.8094 5.6022 1.69680 55.53 0.54341 3.70 40.50 25 -101.8784 0.1801 40.75 26 55.5401 6.5345 1.59282 68.62 0.54414 4.13 41.05 27 153.8577 0.9166 40.72 28 54.2480 4.1506 1.49700 81.54 0.53748 3.62 37.35 29 690.8442 1.0000 1.85025 30.05 0.59797 4.00 36.65 30 37.4241 ​ 34.09 ​ 1.0001 32.78 32 39.6735 7.3523 1.59551 39.24 0.58043 2.63 32.21 33 251.0076 1.0001 1.74400 44.79 0.56560 4.32 30.83 34 33.1819 1.0000 29.14 35 31.9410 1.8955 1.53775 74.70 0.53936 3.64 29.28 36 40.7753 32.5002 29.00 37 43.7549 7.6829 1.49700 81.54 0.53748 3.62 36.00 38 68.0153 3.6061 35.85 39 39.3724 6.7423 1.49700 81.54 0.53748 3.62 31.56 40 55.7578 2.4164 1.85545 36.60 0.57920 4.50 30.81 41 34.5149 2.9618 28.21 42 149.2894 7.8453 1.67270 32.10 0.59891 2.91 28.28 43 20.7992 1.0001 1.85150 40.78 0.56958 4.70 28.27 44 458.6153 0.2368 29.41 45 44.2035 4.3844 1.45650 90.27 0.53477 3.60 30.41 46 269.1698 40.3695 30.43

[0549] [Table 68]

[0550] Example 18

[0551]

[0552] [Table 69]

[0553] Example 18

[0554]

[0555] [Example 19]

[0556] The structure and movement trajectory of the zoom lens of Example 19 are shown in FIG. ​ The zoom lens of Example 19 comprises, in order from the object side toward the image side, a first lens group G1 having positive refractive power, a negative lens group UN having negative refractive power as a whole, an N lens group GN having negative refractive power, a P lens group GP having positive refractive power, and a final lens group GE having positive refractive power. The negative lens group UN consists of a single lens group.

[0557] When changing magnification from the wide-angle end to the telephoto end, the first lens group G1 and the final lens group GE are fixed relative to the image plane Sim, and the negative group UN, N lens group GN and P lens group GP change the intervals between their adjacent lens groups and move along the optical axis Z.

[0558] The first lens group G1 comprises, in order from the object side toward the image side, sub-group 1a G1a, sub-group 1b G1b, sub-group 1c G1c, and sub-group 1d G1d. When focusing from an object at infinity to the closest object, sub-groups 1a G1a and 1c G1c are fixed relative to the image plane Sim, sub-group 1b G1b moves toward the image side, and sub-group 1d G1d moves toward the object side.

[0559] Regarding the zoom lens of Example 19, basic lens data are shown in Tables 70A and 70B, specifications and variable surface spacing are shown in Table 71, aspheric coefficients are shown in Table 72, and various aberration diagrams are shown in Table 73. ​ .

[0560] [Table 70A] Example 19

[0561] ​ R D ​ ​ ​ ​ ​ 1 196.9396 3.1494 1.80400 46.53 0.55775 4.46 98.73 2 219.6156 0.1269 95.94 3 224.8088 3.0855 1.86966 20.02 0.64349 3.37 95.94 4 358.6466 ​ 95.73 5 309.3670 12.9566 1.60137 66.73 0.54368 4.07 95.14 *6 141.1671 ​ 95.11 7 224.6833 2.6632 1.85478 24.80 0.61232 3.49 84.78 8 87.4828 0.7873 81.96 9 93.8796 5.9029 1.57144 71.61 0.54193 4.11 81.96 10 179.8538 ​ 81.78 11 111.8342 9.3062 1.59522 67.73 0.54426 4.17 81.89 12 4092.4970 0.1001 81.71 13 84.1313 10.5763 1.59522 67.73 0.54426 4.17 79.33 14 994.9235 ​ 78.65 15 444.1012 1.0476 1.94771 33.23 0.58771 5.35 33.02 16 24.4553 5.3684 28.58 17 220.3608 0.9679 1.74365 53.64 0.54586 4.17 28.55 18 68.1263 0.1145 28.56 19 54.7244 6.5695 1.81621 22.31 0.63247 3.27 28.75 20 35.9009 1.1865 28.67 21 -30.9000 0.9696 1.95236 32.76 0.58891 5.37 28.37 *22 -383.0770 ​ 29.61 23 -65.7884 3.4687 1.86966 20.02 0.64349 3.37 32.91 24 -33.4454 1.1263 1.93161 34.75 0.58381 5.30 33.23 25 -125.5533 ​ 34.56 *26 233.3788 4.4873 1.73918 54.08 0.54522 4.15 43.98 27 95.7153 0.1002 44.34 28 288.5767 4.0404 1.72951 55.02 0.54408 4.11 45.44 29 113.7254 0.1000 45.54 30 195.8368 4.2096 1.72977 55.01 0.54409 4.11 45.17 31 146.5555 0.1000 44.99 32 136.7788 3.8729 1.74072 53.93 0.54544 4.16 43.15 33 228.1011 ​ 42.65

[0562] [Table 70B] Example 19

[0563] ​ R D ​ ​ ​ ​ ​ ​ 2.4639 34.33 35 146.9965 6.3307 1.83085 32.03 0.59459 4.33 32.92 36 26.8128 1.2157 1.85478 24.80 0.61232 3.49 32.28 37 88.5532 2.5510 29.87 38 96.2633 1.1766 1.74500 41.29 0.57153 3.80 29.84 39 267.6256 34.8165 29.86 40 98.8182 3.1708 1.79375 25.58 0.61595 3.51 34.42 41 44.0841 0.4475 34.77 42 1749.9018 2.6591 1.77830 23.91 0.62490 3.30 34.35 43 99.6919 0.3524 34.28 44 38.6026 4.6412 1.51009 75.78 0.53590 3.29 32.17 45 558.2089 1.0715 1.85383 42.47 0.56513 4.82 31.41 46 35.3787 4.6242 29.52 47 73.0039 7.8442 1.43700 95.10 0.53364 3.53 29.24 48 26.1095 1.0129 1.98106 29.89 0.59749 5.31 28.86 49 1385.1813 8.7870 30.05 50 82.0789 7.4176 1.43937 94.57 0.53385 3.54 34.70 51 47.5054 41.4560 35.04

[0564] [Table 71] Example 19

[0565]

[0566] [Table 72]

[0567] Example 19

[0568]

[0569] [Example 19-1]

[0570] Example 19-1 is an example in which an EX group EX is inserted into the zoom lens of Example 19. The structure of the zoom lens of Example 19-1 and the cross-sectional view of the light beam are shown in FIG. ​ The zoom lens of Example 19-1 has a final lens group GEE in which the EX group EX is inserted inside the final lens group GE of Example 19, replacing the final lens group GE of Example 19. The other lens groups and group structures of Example 19-1 are the same as those of the zoom lens of Example 19.

[0571] Regarding the zoom lens of Example 19-1, basic lens data are shown in Tables 73A and 73B, specifications and variable surface spacing are shown in Table 74, aspheric coefficients are shown in Table 75, and various aberration diagrams are shown in Table 76. ​ middle.

[0572] [Table 73A] Example 19-1

[0573] ​ R D ​ ​ ​ ​ ​ 1 196.9396 3.1494 1.80400 46.53 0.55775 4.46 98.73 2 219.6156 0.1269 95.91 3 224.8088 3.0855 1.86966 20.02 0.64349 3.37 95.91 4 358.6466 ​ 95.69 5 309.3670 12.9566 1.60137 66.73 0.54368 4.07 95.14 *6 141.1671 ​ 95.12 7 224.6833 2.6632 1.85478 24.80 0.61232 3.49 84.78 8 87.4828 0.7873 81.96 9 93.8796 5.9029 1.57144 71.61 0.54193 4.11 81.96 10 179.8538 ​ 81.78 11 111.8342 9.3062 1.59522 67.73 0.54426 4.17 81.89 12 4092.4970 0.1001 81.70 13 84.1313 10.5763 1.59522 67.73 0.54426 4.17 79.33 14 994.9235 ​ 78.65 15 444.1012 1.0476 1.94771 33.23 0.58771 5.35 32.96 16 24.4553 5.3684 28.58 17 -220.3608 0.9679 1.74365 53.64 0.54586 4.17 28.56 18 68.1263 0.1145 28.58 19 54.7244 6.5695 1.81621 22.31 0.63247 3.27 28.76 20 -35.9009 1.1865 28.67 21 -30.9000 0.9696 1.95236 32.76 0.58891 5.37 28.38 *22 -383.0770 ​ 29.61 23 -65.7884 3.4687 1.86966 20.02 0.64349 3.37 32.82 24 -33.4454 1.1263 1.93161 34.75 0.58381 5.30 33.16 25 -125.5533 ​ 34.56 *26 233.3788 4.4873 1.73918 54.08 0.54522 4.15 43.98 27 95.7153 0.1002 44.36 28 288.5767 4.0404 1.72951 55.02 0.54408 4.11 45.44 29 113.7254 0.1000 45.54 30 195.8368 4.2096 1.72977 55.01 0.54409 4.11 45.17 31 146.5555 0.1000 44.99 32 136.7788 3.8729 1.74072 53.93 0.54544 4.16 43.15 33 228.1011 ​ 42.65

[0574] [Table 73B] Example 191

[0575] ​ R D ​ ​ ​ ​ ​ ​ 2.4639 34.33 35 146.9965 6.3307 1.83085 32.03 0.59459 4.33 32.80 36 26.8128 1.2157 1.85478 24.80 0.61232 3.49 32.07 37 88.5532 2.5510 29.36 38 96.2633 1.1766 1.74500 41.29 0.57153 3.80 29.29 39 267.6256 1.2339 29.12 40 29.0522 5.4949 1.57183 68.95 0.54096 3.59 29.04 41 1248.1799 6.7311 28.45 42 67.8092 0.7862 1.99744 27.95 0.60331 5.09 23.51 43 15.9538 3.8727 1.67949 31.47 0.60047 2.87 21.61 44 31.8885 0.1054 21.54 45 27.0120 2.5035 1.44760 64.82 0.52862 2.79 21.76 46 64.0122 1.1537 21.76 47 404.5886 4.4325 1.84992 22.95 0.62661 3.64 21.77 48 21.1185 0.7511 1.80102 47.90 0.55492 4.48 21.94 49 55.6393 7.7515 22.34 50 98.8182 3.1708 1.79375 25.58 0.61595 3.51 25.26 51 44.0841 0.4475 26.05 52 1749.9018 2.6591 1.77830 23.91 0.62490 3.30 26.59 53 -99.6919 0.3524 26.79 54 38.6026 4.6412 1.51009 75.78 0.53590 3.29 26.77 55 558.2089 1.0715 1.85383 42.47 0.56513 4.82 26.17 56 35.3787 4.6242 25.48 57 73.0039 7.8442 1.43700 95.10 0.53364 3.53 26.41 58 -26.1095 1.0129 1. 98106 29.89 0.59749 5.31 26.63 59 -1385.1813 8.7870 28.31 60 82.0789 7.4176 1.43937 94.57 0.53385 3.54 36.35 61 47.5054 41.4560 36.91

[0576] [Table 74] Example 191

[0577]

[0578] [Table 75]

[0579] Example 191

[0580]

[0581] Tables 76 to 79 show the corresponding values ​​of conditional expressions (1) to (23) for the zoom lenses of Examples 1 to 19. Table 80 shows the corresponding values ​​of conditional expressions (24) to (27) for the zoom lenses of Examples 1-1, 13-1 to 16-1, and 19-1. The corresponding values ​​of conditional expressions (1) to (23) are the values ​​when the EX group EX is not inserted, and the corresponding values ​​of conditional expressions (24) to (27) are the values ​​when the EX group EX is inserted. The corresponding values ​​of the examples shown in Tables 76 to 80 can also be used as the upper or lower limit of the conditional expressions to set the preferred range of the conditional expressions.

[0582] [Table 76]

[0583] ​ Example 1 Example 2 Example 3 Example 4 Example 5 (1) fN / f1 1.4678 1.1651 1.2134 1.1778 1.6630 (2) Denw / fw 2.7355 2.8750 3.2166 3.0779 2.4896 (3) fUN / fN 0.1497 0.1861 0.1997 0.2011 0.1380 (4) f1 / f1a 0.0051 0.0043 0.1874 0.1627 0.0458 (5) fUN / f1 0.2197 0.2168 0.2423 0.2369 0.2296 (6) Denw / f1 0.7919 0.7385 0.7469 0.7311 0.7696 (7) Denw / IHw 4.6854 4.5155 4.3696 4.4041 4.4441 (8) MovN / (f1 / log(ft / fw)) 0.1182 0.0016 0.0050 0.0145 0.1127 (9) Bfw / IHw 3.7999 2.9208 3.1292 3.0836 2.8579 (10) PF / IHw 0.1788 0.1774 0.1938 0.1909 0.1563 (11) ωw 32.3908 35.4103 39.5124 38.0334 31.1578 (12) fw / ft 0.0830 0.0910 0.0980 0.0981 0.1001 (13) IHw / Dexw 0.0796 0.1042 0.1036 0.1078 0.1009 (14) fw / f1 0.2895 0.2569 0.2322 0.2375 0.3091 (15) fw / fUN 1.3177 -1.1847 0.9582 1.0027 1.3466 (16) (R2-R3) / (R2+R3) 0.0544 0.0271 -0.2141 -0.1536 0.0378 (17) β AmaxR 0.1945 0.1789 0.1860 0.1919 0.2142 (18) tN1 / ErN1 0.0359 0.0733 0.0684 0.0677 0.0614 (19) MovP / (f1 / log(ft / fw)) 0.1184 0.0121 0.0053 0.0045 0.0987 (20) D1a / TLw 0.0781 0.1001 0.1248 0.1147 0.0744 (21) D1b / DG1 0.2810 0.2327 0.2776 0.2621 0.2437 (22) g vmax 3.5300 3.1800 3.1800 3.1800 3.1800 (23) tL1 / ErL1 0.0405 0.0570 0.0549 0.0419 0.0415

[0584] [Table 77]

[0585] Formula No. Example 6 Example 7 Example 8 Example 9 Example 10 (1) fN / f1 1.5647 1.1092 1.3357 1.4231 1.4592 (2) Denw / fw 2.5680 2.8048 2.8715 2.7599 2.7300 (3) fUN / fN 0.1482 0.1829 0.1592 0.1506 0.1490 (4) f1 / f1a 0.0199 0.0208 0.0040 0.0019 0.0528 (5) fUN / f1 0.2320 0.2029 0.2126 0.2143 0.2174 (6) Denw / f1 0.7645 0.7227 0.8462 0.7967 0.7841 (7) Denw / IHw 4.4012 4.4606 4.9220 4.7302 4.6716 (8) MovN / (f1 / log(ft / fw)) 0.0925 0.0059 0.1119 0.1002 0.1051 (9) Bfw / IHw 2.8577 2.8291 2.6974 3.4209 2.9846 (10) PF / IHw 0.1579 0.1715 0.1740 0.1723 0.1781 (11) ωw 32.3137 35.1240 32.7762 32.3592 32.4047 (12) fw / ft 0.0953 0.0794 0.0831 0.0831 0.0830 (13) IHw / Dexw 0.1036 0.1090 0.1164 0.0667 0.0697 (14) fw / f1 0.2977 0.2577 0.2947 0.2887 0.2872 (15) fw / fUN -1.2835 -1.2702 -1.3861 -1.3471 -1.3212 (16) (R2-R3) / (R2+R3) 0.0072 -0.0173 0.0427 0.0017 -0.0221 (17) β AmaxR 0.2273 0.2230 0.0952 0.2516 0.2042 (18) tN1 / ErN1 0.0612 0.0749 0.0749 0.0707 0.0542 (19) MovP / (f1 / log(ft / fw)) 0.0925 0.0000 0.1120 0.1004 0.1068 (20) D1a / TLw 0.0810 0.0893 0.0816 0.0776 0.0842 (21) D1b / DG1 0.2515 0.2437 0.2861 0.2712 0.2336 (22) g vmax 3.1800 3.1800 3.1800 3.1800 3.1800 (23) tL1 / ErL1 0.0407 0.0424 0.0570 0.0417 0.0449

[0586] [Table 78]

[0587] Formula No. Example 11 Example 12 Example 13 Example 14 Example 15 (1) fN / f1 1.4812 1.5257 1.5839 1.2898 1.5081 (2) Denw / fw 2.7555 2.7645 2.7537 3.1263 2.7984 (3) fUN / fN 0.1460 0.1414 0.1483 0.1723 0.1427 (4) f1 / f1a 0.0033 0.0032 0.0275 0.3136 0.0028 (5) fUN / f1 0.2163 0.2157 0.2348 0.2222 0.2153 (6) Denw / f1 0.7939 0.8023 0.7590 0.9478 0.8132 (7) Denw / IHw 4.7220 4.7384 4.7182 5.3232 4.7918 (8) MovN / (f1 / log(ft / fw)) 0.1152 0.1118 0.2251 0.0578 0.1094 (9) Bfw / IHw 2.8461 2.7717 2.6903 2.5792 3.0971 (10) PF / IHw 0.1631 0.1635 0.1778 0.1849 0.1779 (11) ωw 32.3302 32.3097 32.4451 32.0958 32.5855 (12) fw / ft 0.0830 0.0830 0.0830 0.0825 0.0830 (13) IHw / Dexw 0.1080 0.1078 0.0310 0.0633 0.0687 (14) fw / f1 0.2881 0.2902 0.2756 0.3032 0.2906 (15) fw / fUN -1.3318 -1.3456 -1.1737 -1.3645 -1.3499 (16) (R2-R3) / (R2+R3) 0.0118 0.0065 0.0093 -0.1180 0.0009 (17) β AmaxR 0.2428 0.2621 0.2161 0.1805 0.2184 (18) tN1 / ErN1 0.0475 0.0336 0.0489 0.0734 0.0525 (19) MovP / (f1 / log(ft / fw)) 0.1163 -0.1129 0.22511 0.1123 0.1099 (20) D1a / TLw 0.0786 0.0800 0.0715 0.0484 0.0813 (21) D1b / DG1 0.2868 0.2729 0.2033 0.1366 0.2591 (22) g vmax 3.1800 3.1800 3.1800 3.5900 3.1800 (23) tL1 / ErL1 0.0417 0.0421 0.0449 0.0446 0.0444

[0588] [Table 79]

[0589] Formula No. Example 16 Example 17 Example 18 Example 19 (1) fN / f1 1.5419 1.2306 1.0419 1.3152 (2) Denw / fw 2.7804 2.9623 3.0072 2.9935 (3) fUN / fN 0.1432 0.1831 0.2614 0.1719 (4) f1 / f1a 0.0061 0.3405 0.8486 0.6461 (5) fUN / f1 0.2208 0.2253 0.2724 0.2261 (6) Denw / f1 0.8166 0.8690 0.7470 0.7422 (7) Denw / IHw 4.7453 5.0440 4.6917 5.1270 (8) MovN / (f1 / log(ft / fw)) 0.1521 0.0504 0.0064 0.0482 (9) Bfw / IHw 3.0366 2.9783 2.7793 2.8058 (10) PF / IHw 0.1809 0.1757 0.1676 0.1653 (11) ωw 32.4344 32.1197 34.7495 31.6569 (12) fw / ft 0.0830 0.0825 0.0907 0.1001 (13) IHw / Dexw 0.0917 0.0646 0.1266 0.0633 (14) fw / f1 0.2937 0.2934 0.2484 0.2479 (15) fw / fUUN -1.3303 1.3019 0.9119 1.0964 (16) (R2-R3) / (R2+R3) 0.0146 -0.1163 0.0143 -0.0117 (17) β AmaxR 0.2123 0.1730 0.1715 0.2236 (18) tN1 / ErN1 0.0583 0.0546 0.0467 0.0634 (19) MovP / (f1 / log(ft / fw)) 0.1541 -0.1036 0.0394 0.1085 (20) D1a / TLw 0.0763 0.0427 0.0293 0.0200 (21) D1b / DG1 0.2812 0.1412 0.1411 0.1860 (22) g vmax 3.1800 3.1800 3.1800 4.1100 (23) tL1 / ErL1 0.0447 0.0428 0.0423 0.0638

[0590] [Table 80]

[0591]

[0592] Despite their compact construction, the zoom lenses of Examples 1 to 19 achieve a maximum image height of 14.5° or greater when focused on an object at infinity at the wide-angle end, and possess a large image circle. Furthermore, the zoom lenses of Examples 1 to 19 achieve a maximum half angle of view of 30° or greater when focused on an object at infinity at the wide-angle end, maintaining wide-angle configurations while also achieving excellent correction of various aberrations and maintaining high optical performance.

[0593] Next, an imaging device according to an embodiment of the present invention will be described. Figure 54 , a schematic diagram of an imaging device 100 according to an embodiment of the present invention is shown. The imaging device 100 includes a zoom lens 1 according to an embodiment of the present invention. Examples of the imaging device 100 include a video camera for filming movies, a broadcast camera, a surveillance camera, a digital still camera, and a video camera.

[0594] The imaging device 100 includes a zoom lens 1, a filter 2 disposed on the image side of the zoom lens 1, and an imaging element 3 disposed on the image side of the filter 2. Figure 54 The zoom lens 1 includes an EX group EX that is inserted into or removed from an optical path to change the focal length of the zoom lens while maintaining an imaging position constant.

[0595] The imaging element 3 converts the optical image formed by the zoom lens 1 into an electrical signal, and can use, for example, a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). The imaging element 3 is configured so that its imaging surface is aligned with the image surface of the zoom lens 1. Figure 54 Although only one imaging element 3 is shown in the figure, the imaging device 100 may be a so-called three-panel imaging device including three imaging elements.

[0596] The imaging device 100 further includes a signal processing unit 4, a magnification control unit 5, and a focus control unit 6. The signal processing unit 4 performs computational processing on the output signal from the imaging element 3. The magnification control unit 5 controls the magnification of the zoom lens 1. The focus control unit 6 controls the focus of the zoom lens 1.

[0597] While the present invention has been described above using embodiments and examples, the present invention is not limited to these embodiments and examples and is capable of various modifications. For example, the radius of curvature, interplanar spacing, refractive index, Abbe number, and aspheric coefficient of each lens are not limited to the values ​​shown in the above embodiments; other values ​​may be employed.

[0598] The following supplementary notes are further disclosed regarding the above-mentioned embodiments and examples.

[0599] [Note 1]

[0600] A zoom lens comprising:

[0601] The first lens group is located closest to the object and has positive refractive power.

[0602] a negative lens group, disposed adjacent to the image side of the first lens group, and consisting of two or less lens groups, and having negative refractive power as a whole;

[0603] The N lens group is arranged closer to the image side than the negative lens group and has negative refractive power;

[0604] The P lens group is arranged closer to the image side than the negative lens group and has positive refractive power; and

[0605] The final lens group is placed closest to the image side.

[0606] When zooming, all the intervals between adjacent lens groups change.

[0607] When the focal length of the N lens group is fN and the focal length of the first lens group is f1, the following conditional expression (1) is satisfied:

[0608] -6<fN / f1<-0.55(1).

[0609] [Note 2]

[0610] The zoom lens according to Supplementary Note 1, wherein

[0611] During zooming, the first lens group is fixed relative to the image plane.

[0612] [Note 3]

[0613] The zoom lens according to Supplementary Note 1 or 2, wherein:

[0614] When changing magnification, the final lens group is fixed relative to the image plane.

[0615] [Note 4]

[0616] The zoom lens according to any one of Supplementary Notes 1 to 3, wherein:

[0617] The P lens group is arranged adjacent to the image side of the N lens group.

[0618] The final lens group is arranged adjacent to the image side of the P lens group.

[0619] [Note 5]

[0620] The zoom lens according to any one of Supplementary Notes 1 to 4, wherein:

[0621] During focusing, a portion of the first lens group moves along the optical axis.

[0622] [Note 6]

[0623] The zoom lens according to Supplementary Note 5, wherein

[0624] The first lens group includes, in order from the object side to the image side, sub-group 1a, sub-group 1b and sub-group 1c.

[0625] During focusing, the interval between the subgroup 1a and the subgroup 1b changes, and the interval between the subgroup 1b and the subgroup 1c changes.

[0626] [Note 7]

[0627] The zoom lens according to Supplementary Note 5, wherein

[0628] The first lens group includes, from the object side toward the image side, a sub-group 1a, a sub-group 1b, and a sub-group 1c.

[0629] During focusing, the subgroup 1a is fixed relative to the image plane, and the subgroup 1b and the subgroup 1c move along different trajectories.

[0630] [Note 8]

[0631] The zoom lens according to any one of Supplementary Notes 1 to 7, wherein:

[0632] When the distance on the optical axis from the lens surface closest to the object of the first lens group to the paraxial entrance pupil position in a state in which the image is focused on an object at infinity at the wide-angle end is denoted by Denw, and the focal length of the zoom lens in a state in which the image is focused on an object at infinity at the wide-angle end is denoted by fw, the following conditional expression (2) is satisfied:

[0633] 1.2 <Denw / fw<8 (2)。

[0634] [Note 9]

[0635] The zoom lens according to any one of Supplementary Notes 1 to 8, wherein:

[0636] When the focal length of the negative lens group is fUN and the focal length of the N lens group is fN, the conditional expression (3) expressed as follows is satisfied:

[0637] 0.118 <fUN / fN<0.25(3)。

[0638] [Note 10]

[0639] The zoom lens according to any one of Supplementary Notes 1 to 9, wherein:

[0640] When zooming from the wide-angle end to the telephoto end, the N lens group moves in a trajectory that is convex toward the object side.

[0641] [Note 11]

[0642] The zoom lens according to any one of Supplementary Notes 1 to 10, wherein:

[0643] The lens closest to the object side of the zoom lens is a negative lens.

[0644] The second lens from the object side of the zoom lens is a positive lens.

[0645] [Note 12]

[0646] The zoom lens according to any one of Supplementary Notes 1 to 11, wherein:

[0647] The first lens group includes one negative lens and four or more positive lenses.

[0648] [Note 13]

[0649] The zoom lens according to any one of Supplementary Notes 1 to 12, wherein:

[0650] The first lens group includes a negative lens, a positive lens, and a positive lens in order from the object side toward the image side.

[0651] [Note 14]

[0652] The zoom lens according to any one of Supplementary Notes 1 to 13, wherein:

[0653] When the longest air gap among the air gaps on the optical axis from the lens surface closest to the object side of the P lens group to the lens surface closest to the image side of the final lens group in a state in which the lens is focused on an object at infinity at the wide-angle end is defined as the longest air gap,

[0654] An EX group is arranged in an insertable and removable manner. The EX group is inserted into the optical path of the longest air gap to change the focal length of the zoom lens while keeping the imaging position constant.

[0655] [Note 15]

[0656] The zoom lens according to Supplementary Note 14, wherein

[0657] The maximum image height changes by inserting or removing the EX group.

[0658] [Note 16]

[0659] The zoom lens according to Supplementary Note 5, wherein

[0660] The first lens group includes at least a sub-group 1a and a sub-group 1b in sequence from the object side toward the image side.

[0661] When focusing, the interval between the subgroup 1a and the subgroup 1b changes.

[0662] When the focal length of the 1a-th subgroup is set to f1a, the following conditional expression (4) is satisfied:

[0663] -0.85 <f1 / f1a<0.15(4)。

[0664] [Note 17]

[0665] The zoom lens according to any one of Supplementary Notes 1 to 16, wherein:

[0666] When the focal length of the negative group is set to fUN, the conditional expression (5) expressed as follows is satisfied:

[0667] -0.4<fUN / f1<-0.09(5).

[0668] [Note 18]

[0669] The zoom lens according to any one of Supplementary Notes 1 to 17, wherein:

[0670] When the distance on the optical axis from the lens surface closest to the object of the first lens group to the paraxial entrance pupil position in a state where the lens is focused on an object at infinity at the wide-angle end is denoted by Denw, the following conditional expression (6) is satisfied:

[0671] 0.4 <Denw / f1<1.6 (6)。

[0672] [Note 19]

[0673] The zoom lens according to any one of Supplementary Notes 1 to 18, wherein:

[0674] When the distance on the optical axis from the lens surface closest to the object of the first lens group to the paraxial entrance pupil position in a state in which the lens is focused on an object at infinity at the wide-angle end is denoted by Denw, and the maximum image height in a state in which the lens is focused on an object at infinity at the wide-angle end is denoted by IHw, the following conditional expression (7) is satisfied:

[0675] 3.4 <Denw / IHw<7.5 (7)。

[0676] [Note 20]

[0677] The zoom lens according to any one of Supplementary Notes 1 to 19, wherein

[0678] When the displacement amount of the N lens group in the optical axis direction when performing zooming from the wide-angle end to the telephoto end is MovN, the focal length of the zoom lens in a state focused on an object at infinity at the telephoto end is ft, the focal length of the zoom lens in a state focused on an object at infinity at the wide-angle end is fw, and the sign of the displacement amount is negative when the N lens group moves toward the object side and positive when the N lens group moves toward the image side, the conditional expression (8) expressed as follows is satisfied:

[0679] -0.4<MovN / (f1 / log(ft / fw))<0.1 (8).

[0680] [Note 21]

[0681] The zoom lens according to any one of Supplementary Notes 1 to 20, wherein

[0682] When the back focus at the air conversion distance in the state of focusing on an infinitely distant object at the wide-angle end is set to Bfw and the maximum image height in the state of focusing on an infinitely distant object at the wide-angle end is set to IHw, the conditional expression (9) expressed as follows is satisfied:

[0683] 1.9 <Bfw / IHw<6 (9)。

[0684] [Note 22]

[0685] The zoom lens according to Supplementary Note 6 or 7, wherein

[0686] The subgroup 1a includes an aspheric lens having at least one surface having a curvature radius at a position of maximum effective diameter whose absolute value is larger than the absolute value of the paraxial curvature radius.

[0687] [Note 23]

[0688] The zoom lens according to Supplementary Note 6 or 7, wherein

[0689] The 1c-th subgroup includes an aspheric lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter larger than an absolute value of a paraxial curvature radius.

[0690] [Note 24]

[0691] The zoom lens according to any one of Supplementary Notes 1 to 23, wherein

[0692] The negative lens group includes an aspherical lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter smaller than an absolute value of a paraxial curvature radius.

[0693] [Note 25]

[0694] The zoom lens according to any one of Supplementary Notes 1 to 24, wherein

[0695] The P lens group includes an aspherical lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter larger than an absolute value of a paraxial curvature radius.

[0696] [Note 26]

[0697] The zoom lens according to any one of Supplementary Notes 1 to 25, wherein

[0698] When the longest air gap among the air gaps on the optical axis included between the lens surface closest to the object side of the P lens group and the lens surface closest to the image side of the final lens group in a state in which the lens is focused on an object at infinity at the wide-angle end is defined as the longest air gap, and when the Petzval sum from the lens surface closest to the object side of the first lens group to the object-side surface constituting the longest air gap is defined as PF, and when the maximum image height in a state in which the lens is focused on an object at infinity at the wide-angle end is defined as IHw, the following conditional expression (10) is satisfied:

[0699] 0.12 <PF×IHw<0.25 (10)。

[0700] [Note 27]

[0701] An imaging device comprising the zoom lens according to any one of Supplementary Notes 1 to 26.

Claims

1. A zoom lens comprising: The first lens group is arranged at a position closest to the object and has positive refractive power; a negative group, arranged adjacent to the image side of the first lens group, and consisting of two or less lens groups, and having negative refractive power as a whole; The N lens group is arranged at a position closer to the image side than the negative lens group and has negative refractive power; A P lens group is disposed closer to the image side than the negative lens group and has positive refractive power; and The final lens group is located closest to the image side. When zooming, all the intervals between adjacent lens groups change. When the focal length of the N lens group is fN and the focal length of the first lens group is f1, the conditional expression (1) expressed as follows is satisfied: -6 <fN / f1<-0.55 (1)。 2. The zoom lens according to claim 1, wherein: When changing magnification, the first lens group is fixed relative to the image plane.

3. The zoom lens according to claim 1 or 2, wherein: When changing magnification, the final lens group is fixed relative to the image plane.

4. The zoom lens according to claim 1 or 2, wherein: The P lens group is arranged adjacent to the image side of the N lens group. The final lens group is arranged adjacent to the image side of the P lens group.

5. The zoom lens according to claim 1 or 2, wherein: When focusing is performed, a portion of the first lens group moves along the optical axis.

6. The zoom lens according to claim 5, wherein: The first lens group includes at least a 1a subgroup, a 1b subgroup, and a 1c subgroup in order from the object side toward the image side. When focusing is performed, the interval between the subgroup 1a and the subgroup 1b changes, and the interval between the subgroup 1b and the subgroup 1c changes.

7. The zoom lens according to claim 5, wherein: The first lens group includes, from the object side toward the image side, a sub-group 1a, a sub-group 1b, and a sub-group 1c. When focusing, the subgroup 1a is fixed relative to the image plane, and the subgroup 1b and the subgroup 1c move along different trajectories.

8. The zoom lens according to claim 1 or 2, wherein: When the distance on the optical axis from the lens surface of the first lens group closest to the object to the paraxial entrance pupil position in a state where the lens is focused on an infinitely distant object at the wide angle end is denoted by Denw and the focal length of the zoom lens in a state where the lens is focused on an infinitely distant object at the wide angle end is denoted by fw, the conditional expression (2) expressed as follows is satisfied: 1.2 <Denw / fw<8 (2)。 9. The zoom lens according to claim 1 or 2, wherein: When the focal length of the negative group is fUN and the focal length of the N lens group is fN, the conditional expression (3) expressed as follows is satisfied: 0.118 <fUN / fN<0.25 (3)。 10. The zoom lens according to claim 1 or 2, wherein: When changing magnification from the wide-angle end to the telephoto end, the N lens group moves in a trajectory that is convex toward the object side.

11. The zoom lens according to claim 1 or 2, wherein: The lens closest to the object side of the zoom lens is a negative lens. The second lens from the object side of the zoom lens is a positive lens.

12. The zoom lens according to claim 1 or 2, wherein: The first lens group includes one negative lens and four or more positive lenses.

13. The zoom lens according to claim 1 or 2, wherein: The first lens group includes a negative lens, a positive lens, and a positive lens in order from the object side toward the image side.

14. The zoom lens according to claim 1 or 2, wherein: When the longest air gap among the air gaps on the optical axis from the lens surface of the P lens group closest to the object side to the lens surface of the final lens group closest to the image side in a state where the lens is focused on an infinitely distant object at the wide angle end is set as the longest air gap, An EX group is arranged in an insertable or removable manner, and the EX group is inserted into the optical path of the longest air space to change the focal length of the zoom lens while keeping the imaging position constant.

15. The zoom lens according to claim 14, wherein: The maximum image height changes by inserting or removing the EX group.

16. The zoom lens according to claim 5, wherein: The first lens group includes at least a 1a subgroup and a 1b subgroup in sequence from the object side toward the image side. When focusing, the interval between the 1a subgroup and the 1b subgroup changes. When the focal length of the 1a-th subgroup is set to fla, the conditional expression (4) expressed as follows is satisfied: -0.85 <f1 / fla<0.15 (4)。 17. The zoom lens according to claim 1 or 2, wherein: When the focal length of the negative group is set to fUN, the conditional expression (5) expressed as follows is satisfied: -0.4<fUN / f1<-0.09 (5).

18. The zoom lens according to claim 1 or 2, wherein: When the distance on the optical axis from the lens surface closest to the object of the first lens group to the paraxial entrance pupil position in a state where the lens is focused on an infinitely distant object at the wide angle end is denoted as Denw, the conditional expression (6) expressed as follows is satisfied: 0.4 <Denw / f1<1.6 (6)。 19. The zoom lens according to claim 1 or 2, wherein: When the distance on the optical axis from the lens surface closest to the object of the first lens group to the paraxial entrance pupil position in a state where the lens is focused on an infinitely distant object at the wide angle end is denoted by Denw and the maximum image height in a state where the lens is focused on an infinitely distant object at the wide angle end is denoted by IHw, the conditional expression (7) expressed as follows is satisfied: 3.4 <Denw / IHw<7.5 (7)。 20. The zoom lens according to claim 1 or 2, wherein: When the displacement amount of the N lens group in the optical axis direction when performing zooming from the wide-angle end to the telephoto end is MovN, the focal length of the zoom lens in a state of focusing on an infinitely distant object at the telephoto end is ft, the focal length of the zoom lens in a state of focusing on an infinitely distant object at the wide-angle end is fw, and the sign of the displacement amount is negative when the N lens group moves toward the object side and positive when the N lens group moves toward the image side, the conditional expression (8) represented by the following is satisfied: -0.4 <MovN / (f1 / log(ft / fw))<0.1 (8)。 21. The zoom lens according to claim 1 or 2, wherein: When the back focus at the air conversion distance in the state of focusing on an infinitely distant object at the wide angle end is set to Bfw and the maximum image height in the state of focusing on an infinitely distant object at the wide angle end is set to IHw, the conditional expression (9) expressed as follows is satisfied: 1.9 <Bfw / IHw<6 (9)。 22. The zoom lens according to claim 6, wherein: The 1a-th subgroup includes an aspherical lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter larger than an absolute value of a paraxial curvature radius.

23. The zoom lens according to claim 6, wherein: The 1c-th subgroup includes an aspherical lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter larger than an absolute value of a paraxial curvature radius.

24. The zoom lens according to claim 1 or 2, wherein: The negative group includes an aspherical lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter smaller than an absolute value of a paraxial curvature radius.

25. The zoom lens according to claim 1 or 2, wherein: The P lens group includes an aspherical lens having at least one surface having an absolute value of a curvature radius at a position of a maximum effective diameter larger than an absolute value of a paraxial curvature radius.

26. The zoom lens according to claim 1 or 2, wherein: When the longest air gap among the air gaps on the optical axis from the lens surface closest to the object side of the P lens group to the lens surface closest to the image side of the final lens group in a state in which the lens is focused on an infinite object at the wide angle end is set as the longest air gap, and when the Petzval sum from the lens surface closest to the object side of the first lens group to the surface on the object side constituting the longest air gap is set as PF, and when the maximum image height in a state in which the lens is focused on an infinite object at the wide angle end is set as IHw, the conditional expression (10) expressed as follows is satisfied: 0.12 <PF×IHw<0.25 (10)。 27 . An imaging device comprising the zoom lens according to claim 1 .

Images