Zoom lens and imaging device

Abstract

The invention provides a zoom lens which is small in size and maintains good optical performance by correcting various aberrations, and an imaging device provided with the zoom lens. The zoom lens includes, in order from an object side to an image side, an object-side positive group having a positive refractive power, an object-side negative group having a negative refractive power, an intermediate group, and a final group. The object-side positive group, the object-side negative group, the intermediate group, and the final group each include at least one lens group. During zooming, all the intervals between adjacent lens groups change, and the intervals between all the lenses in each lens group are not changed. During focusing, all the lenses in the object side positive group and all the lenses in the middle group are fixed relative to the image plane. The zoom lens satisfies a predetermined 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 digital camera, a lens described in Patent Document 1 listed below is known.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-043375

[0004] There is a demand for compact zoom lenses that have various aberrations corrected to maintain good optical performance, and these demands are increasing year by year. Summary of the Invention

[0005] The present invention has been made in view of the above circumstances, and provides a compact zoom lens in which various aberrations are corrected to maintain excellent optical performance, and an imaging device including the zoom lens.

[0006] A zoom lens according to one embodiment of the present invention includes, in order from the object side to the image side, an object-side positive group having positive refractive power, an object-side negative group having negative refractive power, an intermediate group, and a final group.

[0007] The object side positive group, object side negative group, intermediate group, and final group each include at least one lens group.

[0008] When changing the magnification, all the intervals between adjacent lens groups change, while the intervals between all the lenses in each lens group remain unchanged.

[0009] When focusing, all lenses in the object-side positive group and all lenses in the intermediate group are fixed relative to the image plane, and the zoom lens satisfies the conditional equation (1) represented by the following equation:

[0010] 0.2<Bfw / (fw×tanωw)<5 (1).

[0011] Here, the back focus of the entire system at the air-equivalent distance when focused on an object at infinity at the wide-angle end is Bfw. The focal length of the entire system when focused on an object at infinity at the wide-angle end is fw. The maximum half angle of view when focused on an object at infinity at the wide-angle end is ωw.

[0012] The object-side negative group preferably includes a lens group having negative refractive power located closest to the object side among lens groups having negative refractive power included in the zoom lens.

[0013] The final group preferably includes 1 lens group.

[0014] The middle group preferably includes at least three lenses.

[0015] The zoom lens of the above embodiment preferably satisfies the following conditional expression (2), when the paraxial curvature radius of the object-side surface of the negative lens closest to the object side among the negative lenses included in the object-side negative group is set to Rnf, and the paraxial curvature radius of the image-side surface of the negative lens closest to the object side among the negative lenses included in the object-side negative group is set to Rnr.

[0016] 0.02<(Rnf-Rnr) / (Rnf+Rnr)<3 (2).

[0017] The lens group closest to the object in the object-side positive group may be configured to move during zooming.

[0018] Preferably, the zoom lens includes at least one focus group that moves during focusing, and a focus group closest to the object among the focus groups included in the zoom lens has negative refractive power.

[0019] Preferably, the object side negative group includes at least two negative lenses, the image side surface of the negative lens closest to the object side among the negative lenses included in the object side negative group is a concave surface, and the object side surface of the negative lens closest to the image side among the negative lenses included in the object side negative group is a concave surface.

[0020] Preferably, the middle group includes at least one lens group with positive refractive power, and the lens group with positive refractive power closest to the object side of the lens group with positive refractive power included in the middle group includes at least two positive lenses. In this structure, the zoom lens of the above embodiment preferably satisfies the conditional formula (3) represented by the following formula:

[0021] 20<(vMp1+vMp2) / 2<100 (3).

[0022] Here, the Abbe number of the d-line reference of the positive lens closest to the object in the middle group is vMpl, and the Abbe number of the second positive lens from the object in the middle group is vMp2.

[0023] The middle group preferably includes at least two lens groups whose intervals with adjacent lens groups change during zooming.

[0024] Preferably, the middle group includes at least one lens group with positive refractive power, and the lens group with positive refractive power closest to the object side of the lens group with positive refractive power included in the middle group includes two positive lenses in sequence from the closest object side to the image side.

[0025] Preferably, the middle group includes at least one lens group with positive refractive power, and the positive lens group closest to the object in the middle group includes at least two positive lenses. In this configuration, the object-side surface of the positive lens closest to the object in the middle group preferably is convex.

[0026] The object-side negative group preferably includes at least four lenses.

[0027] When the open F value in a state of focusing on an object at infinity at the wide-angle end is defined as Fnow, the zoom lens of the above embodiment preferably satisfies the following conditional expression (4):

[0028] 2<Fnow<4.8 (4).

[0029] The lens group closest to the image side among the lens groups included in the middle group may also be configured to have positive refractive power.

[0030] When the focal length of the object side positive group at the wide-angle end is set to fGPw, the zoom lens of the above aspect preferably satisfies the following conditional formula (5) represented by the following formula:

[0031] 0.05<fw / fGPw<2.5 (5).

[0032] When the focal length of the entire system in a state of focusing on an object at infinity at the telephoto end is ft, and the focal length of the object-side positive group at the wide-angle end is fGPw, the zoom lens of the above embodiment preferably satisfies the conditional expression (6) represented by the following expression,

[0033] 0.4<ft / fGPw<4.5 (6).

[0034] The object-side negative lens group preferably includes a lens group having a biconvex air lens formed therein.

[0035] The object side negative group may be configured to include a lens group having negative refractive power, and during focusing, the entire or a portion of the lens group having negative refractive power of the object side negative group moves along the optical axis.

[0036] The configuration may also be such that, during focusing, the entire or a portion of the final group moves along the optical axis.

[0037] The configuration may be such that, during zooming, the lens group closest to the image side of the final group moves.

[0038] An imaging device according to another aspect of the present invention includes the zoom lens according to the above aspect of the present invention.

[0039] In addition, the terms "including..." and "including..." in this specification mean that in addition to the listed components, the device may also include optical components other than lenses, such as lenses that do not essentially have refractive power, apertures, filters, and cover glasses, as well as mechanical parts such as lens flanges, lens barrels, imaging elements, and hand-shake correction mechanisms.

[0040] In this specification, "a group having positive refractive power" and "a group having positive refractive power" mean that the group as a whole has positive refractive power. Similarly, "a group having negative refractive power" and "a group having negative refractive power" mean that the group as a whole has negative refractive power. Each "lens group," "focusing group," and "anti-vibration group" in this specification is not limited to a structure comprising multiple lenses and may also be a structure comprising only a single lens.

[0041] 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. Unless otherwise specified, the radius of curvature, the sign of the refractive power, and the surface shape related to lenses containing aspheric surfaces use those of the paraxial region. The sign of the radius of curvature is positive for the surface convex toward the object, and negative for the surface convex toward the image.

[0042] In this specification, the term "entire system" refers to the zoom lens. The "back focal length at air-converted distance" is the air-converted distance on the optical axis from the lens surface closest to the image side of the entire system 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.

[0043] Effects of the Invention

[0044] According to the present invention, it is possible to provide a compact zoom lens in which various aberrations are corrected to maintain excellent optical performance, and an imaging device including the zoom lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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.

[0046] Figure 2 Yes Figure 1 The diagram shows the structure and luminous flux of the zoom lens in each zoom state, and is a diagram used to explain the symbols of the conditional expressions.

[0047] Figure 3These are diagrams showing various aberrations of the zoom lens of Example 1.

[0048] Figure 4 It is a cross-sectional view showing the structure of the zoom lens of Example 2 and a diagram showing a movement trajectory.

[0049] Figure 5 These are diagrams showing various aberrations of the zoom lens of Example 2.

[0050] Figure 6 It is a cross-sectional view showing the structure of the zoom lens of Example 3 and a diagram showing a movement trajectory.

[0051] Figure 7 1 and 2 are diagrams showing the structure and luminous flux of the zoom lens of Example 3 in each zooming state.

[0052] Figure 8 It is a cross-sectional view showing the structure of the zoom lens of Example 4 and a diagram showing a movement trajectory.

[0053] Figure 9 These are diagrams showing various aberrations of the zoom lens of Example 4.

[0054] Figure 10 It is a cross-sectional view showing the structure of the zoom lens of Example 5 and a diagram showing a movement trajectory.

[0055] Figure 11 These are diagrams showing various aberrations of the zoom lens of Example 5.

[0056] Figure 12 It is a cross-sectional view showing the structure of the zoom lens of Example 6 and a diagram showing a movement trajectory.

[0057] Figure 13 These are diagrams showing various aberrations of the zoom lens of Example 6.

[0058] Figure 14 It is a cross-sectional view showing the structure of the zoom lens of Example 7 and a diagram showing a movement trajectory.

[0059] Figure 15 These are diagrams showing various aberrations of the zoom lens of Example 7.

[0060] Figure 16 It is a cross-sectional view showing the structure of the zoom lens of Example 8 and a diagram showing a movement trajectory.

[0061] Figure 17 These are diagrams showing various aberrations of the zoom lens of Example 8.

[0062] Figure 18 It is a cross-sectional view showing the structure of the zoom lens of Example 9 and a diagram showing a movement trajectory.

[0063] Figure 19 These are diagrams showing various aberrations of the zoom lens of Example 9.

[0064] Figure 20 A cross-sectional view showing the structure of the zoom lens of Example 10 and a diagram showing a movement trajectory.

[0065] Figure 21 These are diagrams showing various aberrations of the zoom lens of Example 10.

[0066] Figure 22 It is a cross-sectional view showing the structure of the zoom lens of Example 11 and a diagram showing a movement trajectory.

[0067] Figure 23 These are diagrams showing various aberrations of the zoom lens of Example 11.

[0068] Figure 24 A cross-sectional view showing the structure of the zoom lens of Example 12 and a diagram showing a movement trajectory.

[0069] Figure 25 These are diagrams showing various aberrations of the zoom lens of Example 12.

[0070] Figure 26 A cross-sectional view showing the structure of the zoom lens of Example 13 and a diagram showing a movement trajectory.

[0071] Figure 27 These are diagrams showing various aberrations of the zoom lens of Example 13.

[0072] Figure 28 It is a cross-sectional view showing the structure of the zoom lens of Example 14 and a diagram showing a movement trajectory.

[0073] Figure 29 These are diagrams showing various aberrations of the zoom lens of Example 14.

[0074] Figure 30 It is a cross-sectional view showing the structure of the zoom lens of Example 15 and a diagram showing a movement trajectory.

[0075] Figure 31 These are diagrams showing various aberrations of the zoom lens of Example 15.

[0076] Figure 32 It is a cross-sectional view showing the structure of the zoom lens of Example 16 and a diagram showing a movement trajectory.

[0077] Figure 33 These are diagrams showing various aberrations of the zoom lens of Example 16.

[0078] Figure 34 It is a cross-sectional view showing the structure of the zoom lens of Example 17 and a diagram showing a movement trajectory.

[0079] Figure 35 These are diagrams showing various aberrations of the zoom lens of Example 17.

[0080] Figure 36 It is a cross-sectional view showing the structure of the zoom lens of Example 18 and a diagram showing a movement trajectory.

[0081] Figure 37 These are diagrams showing various aberrations of the zoom lens of Example 18.

[0082] Figure 38 It is a cross-sectional view showing the structure of the zoom lens of Example 19 and a diagram showing a movement trajectory.

[0083] Figure 39 These are diagrams showing various aberrations of the zoom lens of Example 19.

[0084] Figure 40 It is a cross-sectional view showing the structure of the zoom lens of Example 20 and a diagram showing a movement trajectory.

[0085] Figure 41 These are diagrams showing various aberrations of the zoom lens of Example 20.

[0086] Figure 42 It is a cross-sectional view showing the structure of the zoom lens of Example 21 and a diagram showing a movement trajectory.

[0087] Figure 43 These are diagrams showing various aberrations of the zoom lens of Example 21.

[0088] Figure 44 It is a cross-sectional view showing the structure of the zoom lens of Example 22 and a diagram showing a movement trajectory.

[0089] Figure 45 These are diagrams showing various aberrations of the zoom lens of Example 22.

[0090] Figure 46 It is a cross-sectional view showing the structure of the zoom lens of Example 23 and a diagram showing the movement trajectory.

[0091] Figure 47 These are diagrams showing various aberrations of the zoom lens of Example 23.

[0092] Figure 48 It is a cross-sectional view showing the structure of the zoom lens of Example 24 and a diagram showing the movement trajectory.

[0093] Figure 49 These are diagrams showing various aberrations of the zoom lens of Example 24.

[0094] Figure 50 It is a cross-sectional view showing the structure of the zoom lens of Example 25 and a diagram showing the movement trajectory.

[0095] Figure 51 These are diagrams showing various aberrations of the zoom lens of Example 25.

[0096] Figure 52 It is a cross-sectional view showing the structure of the zoom lens of Example 26 and a diagram showing the movement trajectory.

[0097] Figure 53 These are diagrams showing various aberrations of the zoom lens of Example 26.

[0098] Figure 54 It is a cross-sectional view showing the structure of the zoom lens of Example 27 and a diagram showing the movement trajectory.

[0099] Figure 55 These are diagrams showing various aberrations of the zoom lens of Example 27.

[0100] Figure 56 It is a cross-sectional view showing the structure of the zoom lens of Example 28 and a diagram showing the movement trajectory.

[0101] Figure 57 These are diagrams showing various aberrations of the zoom lens of Example 28.

[0102] Figure 58 This is a perspective view of the front side of an imaging device according to an embodiment.

[0103] Figure 59 This is a perspective view of the back side of an imaging device according to an embodiment.

[0104] Explanation of symbols

[0105] 1- zoom lens, 20- interchangeable lens, 30- camera, 31- camera body, 32- shutter button, 33- power button, 34- operation unit, 35- operation unit, 36- display unit, 37- mount, 38- imaging element, Denw- distance, DGEw- thickness, DGMt- thickness, DGMw- thickness, DGNw- thickness, DGPw- thickness, GE- final group, GM- middle group, GM1- 1st M lens group, GM2- 2M-th lens group, GM3-3M-th lens group, GN-object side negative group, GN1-1N-th lens group, GN2-2N-th lens group, GP-object side positive group, L11~L53-lens, Penw-paraxial entrance pupil position, Pexw-paraxial exit pupil position, PP-optical component, Sim-image plane, St-aperture stop, Z-optical axis, ΔGM-displacement, ΔGN-displacement, ΔGP-displacement, 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 , a cross-sectional view of the structure and movement trajectory of a zoom lens according to an embodiment of the present invention is shown. Figure 2 As shown in Figure 1 The cross-sectional view of the structure of the zoom lens also shows a diagram of the luminous flux. Figure 2 In the figure, the luminous flux on the axis and the luminous flux at the maximum half viewing angle in each state are shown as luminous flux. Figure 1 and Figure 2 , the upper section labeled “Wide” shows the wide-angle end state, and the lower section labeled “Tele” shows the telephoto end state. Figure 1 and Figure 2 The example shown corresponds to the zoom lens of Example 1 described later. 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 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 refractive power. The imaging device can also be configured without optical component PP.

[0109] The zoom lens of the present invention comprises, in order from the object side to the image side along the optical axis Z, an object-side positive optical group GP with positive refractive power, an object-side negative optical group GN with negative refractive power, an intermediate optical group GM, and a final optical group GE. This structure advantageously suppresses various aberrations throughout the entire zoom range.

[0110] The object-side positive lens group GP, the object-side negative lens group GN, the intermediate lens group GM, and the final lens group GE each consist of at least one lens group. During zooming, the spacing between adjacent lens groups changes, while the spacing between lenses within each lens group remains constant. By having at least one lens group in each of the object-side positive lens group GP, the object-side negative lens group GN, the intermediate lens group GM, and the final lens group GE, variations in aberrations during zooming are effectively suppressed.

[0111] In this specification, a group whose spacing in the optical axis direction changes with adjacent groups when the zoom is changed is referred to as one lens group. When the zoom is changed, the spacing between adjacent lenses within one lens group does not change. That is, a "lens group" is a component of the zoom lens, and is a part that includes at least one lens separated by an air gap that changes when the zoom is changed. When the zoom is changed, each lens group unit moves or is fixed. In addition, a "lens group" may also include components other than lenses that do not have refractive power, for example, an aperture stop St, etc.

[0112] As an example, Figure 2 Each group of the zoom lens shown is constructed as follows. The object side positive group GP includes one lens group. The lens group constituting the object side positive group GP includes three lenses, namely, lenses L11 to L13, in order from the object side to the image side. The object side negative group GN includes one lens group. The lens group constituting the object side negative group GN includes five lenses, namely, lenses L21 to L25, in order from the object side to the image side. The middle group GM includes two lens groups, namely, the 1M lens group GM1 and the 2M lens group GM2, in order from the object side to the image side. The 1M lens group GM1 includes four lenses, namely, the aperture stop St and lenses L31 to L34, in order from the object side to the image side. The 2M lens group GM2 includes three lenses, namely, lenses L41 to L43, in order from the object side to the image side. The final group GE includes one lens group. The lens group constituting the final group GE includes three lenses, namely, lenses L51 to L53, in order from the object side to the image side. In addition, Figure 1 and Figure 2 The aperture stop St shown indicates the position in the optical axis direction and does not indicate the size or shape.

[0113] exist Figure 1 In the example shown in FIG1 , when zooming, the object side positive lens group GP, the object side negative lens group GN, the 1M-th lens group GM1, and the 2M-th lens group GM2 change the intervals between the adjacent lens groups and move along the optical axis Z, and the final lens group GE is fixed to the image plane Sim. Figure 1 In the figure, between the Wide and Tele figures, solid arrows are used to represent the schematic movement trajectory of each lens group that moves when changing magnification from the wide-angle end to the telephoto end, and straight dotted lines in the up and down directions are used to represent the lens groups that are fixed when changing magnification.

[0114] The object side group GP may also be configured to include a single lens group, which is advantageous for miniaturization.

[0115] The number of lenses included in the object-side positive group GP is preferably 3 or less. The object-side positive group GP is a lens group on the object side. Since the lens outer diameter is large, it is composed of 3 or less lenses, which is advantageous for weight reduction.

[0116] When zooming, it is preferable that the lens group closest to the object of the object-side positive group GP moves. The movement of the lens group closest to the object during zooming is advantageous in suppressing various aberrations during zooming.

[0117] The object-side negative lens group GN preferably comprises the negative-power lens group closest to the object among the negative-power lens groups included in the zoom lens. In other words, the object-side positive lens group GP preferably comprises entirely positive-power lens groups. This configuration of the object-side positive lens group GP as the group closest to the object facilitates miniaturization.

[0118] The object-side negative group GN preferably includes at least four lenses, which is advantageous for achieving high performance.

[0119] The object-side negative group GN preferably includes at least two negative lenses. In this case, the image-side surface of the negative lens closest to the object in the object-side negative group GN is concave, and the object-side surface of the negative lens closest to the image in the object-side negative group GN is concave. This facilitates correction of field curvature.

[0120] The object-side negative lens group GN preferably includes a lens group having a biconvex air lens formed therein. In this case, it is advantageous to suppress field curvature. In this specification, the air space sandwiched between the two opposing lens surfaces is regarded as a lens with a refractive index of 1, and this air space is referred to as an air lens. Figure 2 In the example, a biconvex air lens is formed by the image side surface of lens L21 and the object side surface of lens L22, a biconvex air lens is formed by the image side surface of lens L23 and the object side surface of lens L24, and a biconvex air lens is formed by the image side surface of lens L24 and the object side surface of lens L25.

[0121] In this specification, the lens group with negative refractive power closest to the object among the lens groups with negative refractive power included in the zoom lens is referred to as the first negative lens group. Figure 1 In this example, the object-side negative lens group GN is the first negative lens group. Of the lens groups with positive refractive power closer to the image side than the first negative lens group, the one closest to the object is preferably positioned closest to the object side of the middle group GM. This facilitates miniaturization of the middle group GM.

[0122] The middle group GM preferably includes at least three lenses. In this case, it is advantageous to suppress various aberrations during zooming. To suppress various aberrations during zooming, the middle group GM more preferably includes at least four lenses, and further preferably includes at least five lenses.

[0123] The middle group GM preferably includes at least two lens groups whose intervals with adjacent lens groups change during zooming. In this case, it is easy to suppress aberration fluctuations during zooming.

[0124] The middle group GM preferably includes at least one lens group with positive refractive power. In this specification, the lens group with positive refractive power closest to the object side among the lens groups with positive refractive power included in the middle group GM is referred to as the first middle positive lens group. Figure 1 In the example, the 1st M lens group GM1 is the 1st intermediate positive lens group. The 1st intermediate positive lens group preferably includes at least 2 positive lenses. In this case, the positive refractive power of the 1st intermediate positive lens group can be shared by more than 2 positive lenses, which is beneficial for suppressing various aberrations. The 1st intermediate positive lens group preferably includes 2 positive lenses in sequence from the side closest to the object to the image side. In this case, it is beneficial for correcting various aberrations, especially spherical aberration. In the structure in which the 1st intermediate positive lens group includes at least 2 positive lenses, the object-side surface of the positive lens closest to the object side among the positive lenses included in the 1st intermediate positive lens group is preferably a convex surface. In this case, it is beneficial for correcting spherical aberration.

[0125] Among the lens groups included in the middle lens group GM, the lens group closest to the image side can also be configured with positive refractive power. Placing a lens group with positive refractive power closer to the object side than the final lens group GE facilitates miniaturization of the outer diameter of the final lens group GE. In particular, arranging a lens group with positive refractive power adjacent to the object side of the final lens group GE facilitates miniaturization of the outer diameter of the final lens group GE.

[0126] The final lens group GE preferably includes one lens group. In this case, the total length of the optical system can be easily shortened.

[0127] When zooming, it is preferable that the final lens group GE is fixed to the image plane Sim. When zooming, by keeping the final lens group GE stationary, it is easy to prevent dust and the like from entering the interior of the zoom lens.

[0128] exist Figure 1 In the example of FIG, the aperture stop St is included in the middle group GM. By arranging the aperture stop St in the middle group GM having a relatively small lens outer diameter, the aperture unit can be miniaturized, thereby facilitating miniaturization of the entire lens apparatus.

[0129] The zoom lens of the present invention preferably includes at least one focus group that moves when focusing. Hereinafter, the group that moves along the optical axis Z when focusing is referred to as the focus group. Focusing is performed by moving the focus group. As an example, Figure 1 In the example of , the focus group includes three lenses, L21 to L23, which are the object-side negative group GN. Figure 1 In the figure below, below the lens corresponding to the focus group in the lower diagram, there are arrows in parentheses indicating the direction of movement when focusing from an object at infinity to the closest object. The focus group functions in the entire zoom range, including the wide-angle end state, but Figure 1In order to avoid complicating the diagram, the above arrows are only included in the lower diagram.

[0130] When the object-side negative group GN includes a lens group with negative refractive power, the entire or a portion of the lens group with negative refractive power of the object-side negative group GN can be configured so that during focusing, the lens group of the object-side negative group GN moves along the optical axis Z. The lens group of the object-side negative group GN has a relatively small outer diameter. By using the entire or a portion of the lens group with a small outer diameter as the focusing group, the overall diameter of the zoom lens can be easily reduced.

[0131] In the zoom lens of the present invention, all lenses in the object-side positive group GP are fixed to the image plane Sim during focusing. By designating all lenses in the object-side positive group GP, excluding the lens group GP having a larger outer diameter, as the focus group, the outer diameter of the focus group can be reduced, thereby facilitating weight reduction of the focus group and reducing the load on the drive mechanism.

[0132] Furthermore, in the zoom lens of the present invention, all lenses in the middle group GM are fixed to the image plane Sim during focusing. Designating other groups as the focusing group, rather than the middle group GM, which has a larger diameter of on-axis light flux, as the focusing group, is advantageous in suppressing fluctuations in spherical aberration during focusing.

[0133] Figure 1 The zoom lens of the example includes only one focus group, but the zoom lens of the present invention may also be configured to include multiple focus groups. In the following, the focus group closest to the object among the focus groups included in the zoom lens is referred to as the first focus group. For example, in Figure 1 In the example of FIG, the first focusing group includes lenses L21 to L23. The first focusing group preferably has negative refractive power. In this case, it is advantageous to reduce the amount of movement during focusing.

[0134] The first focusing group preferably includes a negative lens with the concave surface facing the direction of movement when focusing from an infinitely distant object to a close object. In this case, it is advantageous to suppress the change of field curvature when focusing on a close object. For example, Figure 1 In the example above, the first focusing group moves toward the image side when focusing from an object at infinity to an object at close range. Figure 1 The lenses L21 and L22 in the example are both negative lenses with their concave surfaces facing the image side.

[0135] The zoom lens of the present invention preferably includes an anti-vibration group that moves during image shake correction. Hereinafter, the group that moves in a direction intersecting the optical axis Z during image shake correction is referred to as an anti-vibration group. Image shake correction is performed by moving the anti-vibration group. As an example, in Figure 1 In the example, the anti-vibration group includes the 2M-th lens group GM2. Figure 1In the figure below, an arrow pointing downward is written in parentheses below the lens corresponding to the anti-vibration group in the lower diagram. Figure 1 In order to avoid complicating the diagram, the above arrows are only included in the lower diagram.

[0136] The anti-vibration group can also be configured to be arranged closer to the image side than the focusing group. By using a lens with a smaller outer diameter located closer to the image side than the focusing group as the anti-vibration group, the anti-vibration mechanism can be miniaturized, thereby facilitating miniaturization of the entire lens device.

[0137] The anti-vibration group may be configured to be included in the middle group GM. By arranging the anti-vibration group on the middle group GM having a relatively small lens outer diameter, the anti-vibration mechanism can be miniaturized, thereby facilitating miniaturization of the entire lens apparatus.

[0138] The anti-vibration group may also be configured to include at least one positive lens and at least one negative lens. In this case, it is advantageous to reduce color bleeding during image shake correction.

[0139] Next, preferred and possible configurations related to the conditional expressions of the zoom lens of the present invention are described. In the following description of the conditional expressions, identical symbols are used for parts with the same definitions to avoid redundancy, and some duplicate descriptions of symbols are omitted. Furthermore, to avoid redundancy, the "zoom lens of the present invention" will also be referred to simply as the "zoom lens."

[0140] The zoom lens preferably satisfies the following conditional expression (1). Here, the back focal length of the entire system at the air conversion distance when focusing on an object at infinity at the wide-angle end is set to Bfw. The focal length of the entire system when focusing on an object at infinity at the wide-angle end is set to fw. The maximum half angle of view when focusing on an object at infinity at the wide-angle end is set to ωw. As an example, Figure 2 The maximum half angle of view ωw is shown in FIG. By ensuring that the corresponding value of conditional expression (1) does not fall below the lower limit, it is advantageous to ensure the amount of peripheral light. By ensuring that the corresponding value of conditional expression (1) does not exceed the upper limit, it is advantageous to shorten the total length of the optical system.

[0141] 0.2<Bfw / (fw×tanωw)<5 (1)

[0142] In order to obtain better characteristics, the lower limit of conditional expression (1) is more preferably set to 0.3, more preferably 0.5, more preferably 0.7, more preferably 0.8, and more preferably 0.9. The upper limit of conditional expression (1) is more preferably set to 4, more preferably 3, more preferably 2, more preferably 1.7, and more preferably 1.

[0143] The zoom lens preferably satisfies the following conditional expression (2). Here, the paraxial curvature radius of the object-side surface of the negative lens closest to the object side in the object-side negative group GN is set to Rnf. Among the negative lenses included in the object-side negative group GN, the paraxial curvature radius of the image-side surface of the negative lens closest to the object side is set to Rnr. By ensuring that the corresponding value of conditional expression (2) does not fall below the lower limit, it is advantageous to suppress astigmatism from the wide-angle end to the telephoto end. By ensuring that the corresponding value of conditional expression (2) does not fall above the upper limit, it is advantageous to suppress distortion aberration and field curvature at the wide-angle end.

[0144] 0.02<(Rnf-Rnr) / (Rnf+Rnr)<3 (2)

[0145] In order to obtain better characteristics, the lower limit of conditional expression (2) is more preferably set to 0.04, more preferably 0.1, more preferably 0.3, more preferably 0.5, more preferably 0.62, more preferably 0.68, and more preferably 0.75. The upper limit of conditional expression (2) is more preferably set to 2.5, more preferably 2, more preferably 1.5, more preferably 1.17, more preferably 1.13, more preferably 1.1, and more preferably 1.

[0146] The middle group GM includes at least one lens group with positive refractive power. In the structure in which the first middle positive lens group includes at least two positive lenses, the zoom lens preferably satisfies the following conditional formula (3). Here, the Abbe number of the d-line reference of the positive lens closest to the object side among the positive lenses included in the middle group GM is set to vMp1. The Abbe number of the d-line reference of the second positive lens from the object side among the positive lenses included in the middle group GM is set to vMp2. By making the corresponding value of the conditional formula (3) not reach below the lower limit value, it is possible to suppress insufficient correction of axial chromatic aberration at the wide-angle end, which is conducive to high performance. By making the corresponding value of the conditional formula (3) not reach above the upper limit value, it is possible to suppress excessive correction of axial chromatic aberration at the wide-angle end, which is conducive to high performance.

[0147] 20<(vMp1+vMp2) / 2<100 (3)

[0148] In order to obtain better characteristics, the lower limit of conditional expression (3) is more preferably set to 27, more preferably 32, more preferably 39, more preferably 45, more preferably 50, more preferably 60, and more preferably 70. The upper limit of conditional expression (3) is more preferably set to 90, more preferably 80.

[0149] The zoom lens preferably satisfies the following conditional expression (4). Here, the open F-number at the wide-angle end, when focusing on an object at infinity, is defined as Fnow. By ensuring that the corresponding value of conditional expression (4) does not fall below the lower limit, the overall zoom lens can be miniaturized. By ensuring that the corresponding value of conditional expression (4) does not exceed the upper limit, the aperture can be increased.

[0150] 2<Fnow<4.8 (4)

[0151] To obtain better characteristics, the lower limit of conditional expression (4) is more preferably 2.3, more preferably 2.4, and more preferably 2.5. The upper limit of conditional expression (4) is more preferably 4.5, more preferably 4, and more preferably 3.9.

[0152] The zoom lens preferably satisfies the following conditional expression (5). Here, the focal length of the object-side positive lens group GP at the wide-angle end is set to fGPw. By ensuring that the corresponding value of conditional expression (5) does not fall below the lower limit, the refractive power of the object-side positive lens group GP does not become excessively weak, thereby facilitating miniaturization of the lens group closest to the object. By ensuring that the corresponding value of conditional expression (5) does not exceed the upper limit, the refractive power of the object-side positive lens group GP does not become excessively weak, thereby facilitating suppression of aberration fluctuations during zooming.

[0153] 0.05<fw / fGPw<2.5 (5)

[0154] In order to obtain better characteristics, the lower limit of conditional expression (5) is more preferably set to 0.1, more preferably 0.13, more preferably 0.15, more preferably 0.16, more preferably 0.18, more preferably 0.2, and more preferably 0.35. The upper limit of conditional expression (5) is more preferably set to 2, more preferably 1.5, more preferably 1.25, more preferably 1, more preferably 0.85, more preferably 0.75, and more preferably 0.55.

[0155] The zoom lens preferably satisfies the following conditional expression (6). Here, the focal length of the entire system at the telephoto end, focused on an object at infinity, is ft. By ensuring that the corresponding value of conditional expression (6) does not fall below the lower limit, the refractive power of the object-side positive lens group GP does not become excessively weak, thereby facilitating miniaturization of the lens group closest to the object. By ensuring that the corresponding value of conditional expression (6) does not exceed the upper limit, the refractive power of the object-side positive lens group GP does not become excessively weak, thereby facilitating suppression of aberration fluctuations during zooming.

[0156] 0.4<ft / fGPw<4.5 (6)

[0157] In order to obtain better characteristics, the lower limit of conditional expression (6) is more preferably set to 0.5, more preferably 0.6, more preferably 0.7, more preferably 0.8, and more preferably 1.1. The upper limit of conditional expression (6) is more preferably set to 4, more preferably 3.5, more preferably 3, more preferably 2.7, and more preferably 1.5.

[0158] The zoom lens preferably satisfies the following conditional expression (7). Here, the focal length of the lens group with the strongest positive refractive power among the lens groups included in the middle group GM is set to fGMp. By ensuring that the corresponding value of conditional expression (7) does not fall below the lower limit, the refractive power of the middle group GM does not become too weak, thereby facilitating miniaturization. By ensuring that the corresponding value of conditional expression (7) does not exceed the upper limit, the refractive power of the middle group GM does not become too strong, thereby facilitating suppression of aberration fluctuations during zooming.

[0159] 0.3<fw / fGMp<4 (7)

[0160] In order to obtain better characteristics, the lower limit of conditional expression (7) is more preferably set to 0.35, further preferably 0.4, further preferably 0.45, and further preferably 0.5. The upper limit of conditional expression (7) is more preferably set to 3.5, further preferably 3, further preferably 2.8, further preferably 2, further preferably 1.8, and further preferably 1.3.

[0161] The zoom lens preferably satisfies the following conditional expression (8). Here, the focal length of the middle group GM at the wide-angle end is set to fGMw. By ensuring that the corresponding value of conditional expression (8) does not fall below the lower limit, the refractive power of the middle group GM does not become excessively weak, thereby facilitating miniaturization. By ensuring that the corresponding value of conditional expression (8) does not exceed the upper limit, the refractive power of the middle group GM does not become excessively strong, thereby facilitating suppression of aberration fluctuations during zooming.

[0162] 0.1<fw / fGMw<3 (8)

[0163] In order to obtain better characteristics, the lower limit of conditional expression (8) is more preferably set to 0.2, more preferably 0.25, more preferably 0.3, more preferably 0.4, more preferably 0.5, more preferably 0.6, and more preferably 0.7. The upper limit of conditional expression (8) is more preferably set to 2.5, more preferably 2, more preferably 1.8, more preferably 1.6, more preferably 1.2, more preferably 1, and more preferably 0.8.

[0164] The zoom lens preferably satisfies the following conditional expression (9). Here, the focal length of the final lens group GE at the wide-angle end, focused on an object at infinity, is set to fGEw. By ensuring that the corresponding value of conditional expression (9) does not fall below the lower limit, various aberrations throughout the zoom range are suppressed. By ensuring that the corresponding value of conditional expression (9) does not exceed the upper limit, the error sensitivity of the final lens group GE during assembly is reduced.

[0165] -3<fw / fGEw<3 (9)

[0166] In order to obtain better characteristics, the lower limit of conditional expression (9) is more preferably set to -2.5, further preferably -2, further preferably -1.5, and further preferably -1. The upper limit of conditional expression (9) is more preferably set to 2.5, further preferably 2.3, further preferably 2, further preferably 1.7, further preferably 1.5, and further preferably 1.2.

[0167] The zoom lens preferably satisfies the following conditional expression (10). Here, the focal length of the first focus group is set to ffoc. By ensuring that the corresponding value of conditional expression (10) does not fall below the lower limit, the amount of movement during focusing can be reduced, thereby facilitating miniaturization and faster focusing. By ensuring that the corresponding value of conditional expression (10) does not exceed the upper limit, the refractive power of the focus group does not become excessively strong, thereby facilitating suppression of aberration fluctuations during focusing.

[0168] 0.05<fw / |ffoc|<3.5 (10)

[0169] To obtain better characteristics, the lower limit of conditional expression (10) is more preferably set to 0.08, more preferably 0.12, more preferably 0.16, more preferably 0.25, more preferably 0.3, more preferably 0.4, and more preferably 0.5. The upper limit of conditional expression (10) is more preferably set to 3, more preferably 2.5, more preferably 2.2, more preferably 2, and more preferably 1.5.

[0170] The zoom lens preferably satisfies the following conditional expression (11). By ensuring that the corresponding value of conditional expression (11) does not fall below the lower limit, the amount of movement during focusing can be reduced, thereby facilitating miniaturization and faster focusing. By ensuring that the corresponding value of conditional expression (11) does not exceed the upper limit, the refractive power of the focus group does not become excessively strong, thereby facilitating suppression of aberration fluctuations during focusing.

[0171] 0.9<ft / |ffoc|<20 (11)

[0172] In order to obtain better characteristics, the lower limit of conditional expression (11) is more preferably set to 1, further preferably to 1.1, further preferably to 1.2, further preferably to 1.3, further preferably to 1.5. The upper limit of conditional expression (11) is more preferably set to 15, further preferably to 12, further preferably to 10, further preferably to 8, further preferably to 6.

[0173] The zoom lens preferably satisfies the following conditional expression (12). In this specification, the unit of ωw is set to degrees. By ensuring that the corresponding value of conditional expression (12) does not fall below the lower limit, it is advantageous to achieve a wide angle. By ensuring that the corresponding value of conditional expression (12) does not fall above the upper limit, it is advantageous to achieve miniaturization.

[0174] 10<ωw<55 (12)

[0175] In order to obtain better characteristics, the lower limit value of conditional expression (12) is more preferably set to 12, further preferably 15, further preferably 20, further preferably 25, further preferably 30. The upper limit value of conditional expression (12) is more preferably set to 50, further preferably 48, further preferably 46, further preferably 44, further preferably 42.

[0176] The zoom lens preferably satisfies the following conditional expression (13). Here, the focal length of the object-side negative group GN at the wide-angle end, when focusing on an object at infinity, is set to fGNw. By ensuring that the corresponding value of conditional expression (13) does not fall below the lower limit, the refractive power of the object-side negative group GN does not become excessively strong, thereby facilitating suppression of aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (13) does not fall above the upper limit, the refractive power of the object-side negative group GN does not become excessively weak, thereby enabling suppression of the amount of movement of the object-side negative group GN during zooming, thereby facilitating miniaturization along the optical axis.

[0177] -4.5<fw / fGNw<-0.3 (13)

[0178] In order to obtain better characteristics, the lower limit of conditional expression (13) is more preferably -4, further preferably -3.5, further preferably -3.2, further preferably -3, further preferably -2.5, further preferably -2. The upper limit of conditional expression (13) is more preferably -0.5, further preferably -0.7, further preferably -0.9, further preferably -1, further preferably -1.1, further preferably -1.2.

[0179] The zoom lens preferably satisfies the following conditional expression (14). By ensuring that the corresponding value of conditional expression (14) does not fall below the lower limit, the refractive power of the object-side negative group GN does not become excessively strong, thereby advantageously suppressing aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (14) does not exceed the upper limit, the refractive power of the object-side negative group GN does not become excessively weak, thereby suppressing the amount of movement of the object-side negative group GN during zooming, thereby advantageously contributing to miniaturization along the optical axis.

[0180] -21<ft / fGNw<-2.5 (14)

[0181] In order to obtain better characteristics, the lower limit of conditional expression (14) is more preferably set to -18, further preferably -16, further preferably -14, further preferably -12, further preferably -9, and further preferably -6. The upper limit of conditional expression (14) is more preferably set to -3, further preferably -3.5, and further preferably -4.

[0182] The zoom lens preferably satisfies the following conditional expression (15). Here, the focal length of the intermediate group GM at the telephoto end is set to fGMt. By ensuring that the corresponding value of conditional expression (15) does not fall below the lower limit, the diameter of the luminous flux incident on the final group GE can be suppressed, thereby facilitating a reduction in diameter. By ensuring that the corresponding value of conditional expression (15) does not exceed the upper limit, it is advantageous to suppress aberration fluctuations during zooming.

[0183] 0.5<ft / fGmt<15 (15)

[0184] In order to obtain better characteristics, the lower limit value of the conditional expression (15) is more preferably set to 0.8, more preferably 1, more preferably 1.2, more preferably 2, more preferably 2.5, and more preferably 3. The upper limit value of the conditional expression (15) is more preferably set to 13, more preferably 12, more preferably 10, more preferably 9, more preferably 7, and more preferably 6.5.

[0185] The zoom lens preferably satisfies the following conditional expression (16). Here, the sum of the distance on the optical axis from the lens surface closest to the object side of the object-side positive group GP to the lens surface closest to the image side of the final group GE in the state of focusing on an infinite object at the telephoto end and the back focal length of the entire system at the air conversion distance is set as TLt. The sum of the distance on the optical axis from the lens surface closest to the object side of the object-side positive group GP to the lens surface closest to the image side of the final group GE in the state of focusing on an infinite object at the wide-angle end and the back focal length of the entire system at the air conversion distance is set as TLw. By making the corresponding value of conditional expression (16) not reach below the lower limit value, the lens group closest to the object side can be moved an effective amount when changing the magnification, which is conducive to suppressing the aberration change when changing the magnification. By making the corresponding value of conditional expression (16) not reach above the upper limit value, the change in the total length when changing the magnification can be reduced, which is conducive to miniaturization.

[0186] 0.05<(TLt-TLw) / fw×(fw / ft)<1.5 (16)

[0187] In order to obtain better characteristics, the lower limit of conditional expression (16) is more preferably set to 0.07, further preferably 0.08, further preferably 0.09, further preferably 0.12, and further preferably 0.15. The upper limit of conditional expression (16) is more preferably set to 1, further preferably 0.8, further preferably 0.6, further preferably 0.55, and further preferably 0.35.

[0188] The zoom lens preferably satisfies the following conditional expression (17). Here, the lateral magnification of the first focus group in the state of focusing on an object at infinity at the wide-angle end is set to βfw. The composite lateral magnification of all lenses closer to the image side than the first focus group in the state of focusing on an object at infinity at the wide-angle end is set to βfRw. In addition, when there is no lens closer to the image side than the first focus group, βfRw=1 is set. By making the corresponding value of the conditional expression (17) not reach below the lower limit value, the movement amount of the focus group during focusing can be reduced, which is conducive to miniaturization of the entire zoom lens. By making the corresponding value of the conditional expression (17) not reach above the upper limit value, it is conducive to suppressing the aberration change during focusing.

[0189] 0.15<|(1-βfw 2 )×βfRw 2 |<9 (17)

[0190] In order to obtain better characteristics, the lower limit of conditional expression (17) is more preferably set to 0.16, more preferably 0.18, more preferably 0.2, more preferably 0.25, more preferably 0.5, more preferably 0.8, and more preferably 1.1. The upper limit of conditional expression (17) is more preferably set to 7, more preferably 4.9, more preferably 4, more preferably 3, more preferably 2.5, more preferably 2, and more preferably 1.8.

[0191] The zoom lens preferably satisfies the following conditional expression (18). Here, the lateral magnification of the first focus group in the state of focusing on an infinitely distant object at the telephoto end is set to βft. The composite lateral magnification of all lenses closer to the image side than the first focus group in the state of focusing on an infinitely distant object at the telephoto end is set to βfRt. In addition, when there is no lens closer to the image side than the first focus group, βfRt is set to 1. By making the corresponding value of the conditional expression (18) not reach below the lower limit value, the movement amount of the focus group during focusing can be reduced, which is conducive to the miniaturization of the entire zoom lens. By making the corresponding value of the conditional expression (18) not reach above the upper limit value, it is conducive to suppressing the aberration change during focusing.

[0192] 0.8<|(1-βft 2 )×βfRt 2 |<23 (18)

[0193] In order to obtain better characteristics, the lower limit of conditional expression (18) is more preferably set to 1, more preferably 1.1, more preferably 1.2, more preferably 1.5, more preferably 2, more preferably 3, and more preferably 4.5. The upper limit of conditional expression (18) is more preferably set to 18, more preferably 15, more preferably 12, more preferably 10, more preferably 9, more preferably 8, and more preferably 7.

[0194] In a structure including an aperture stop St, the zoom lens preferably satisfies the following conditional expression (19). Here, the open aperture diameter of the aperture stop St when focusing on an object at infinity at the wide-angle end is set as STw. The open aperture diameter of the aperture stop St when focusing on an object at infinity at the telephoto end is set as STt. In addition, the open aperture diameter refers to the diameter of the opening of the aperture stop St in the open state. When the opening is a polygon, the diameter of the circumscribed circle of the polygon in the open state is set as the open aperture diameter. By making the corresponding value of conditional expression (19) not fall below the lower limit, the difference between the open aperture diameters at the wide-angle end and the telephoto end does not become too large, which is conducive to miniaturization of the aperture unit. By making the corresponding value of conditional expression (19) not fall above the upper limit, it is easy to reduce the change in F value at the wide-angle end and the telephoto end.

[0195] 0.55<STw / STt<1 (19)

[0196] In order to obtain better characteristics, the lower limit of conditional expression (19) is more preferably set to 0.6, further preferably to 0.65, further preferably to 0.7, further preferably to 0.73, further preferably to 0.74, and further preferably to 0.75. The upper limit of conditional expression (19) is more preferably set to 0.99, further preferably to 0.98, further preferably to 0.97, further preferably to 0.96, further preferably to 0.92, and further preferably to 0.86.

[0197] The zoom lens preferably satisfies the following conditional expression (20). Here, the average value of the Abbe numbers of all positive lenses in the object-side positive group GP, measured on the d-line basis, is set to vPave. By ensuring that the corresponding value of conditional expression (20) does not fall below the lower limit, axial chromatic aberration is suppressed. By ensuring that the corresponding value of conditional expression (20) does not exceed the upper limit, material availability is improved, thereby enabling the use of materials that are easier to manufacture.

[0198] 50<vPave<115(20)

[0199] In order to obtain better characteristics, the lower limit value of conditional expression (20) is more preferably set to 52, further preferably 53, further preferably 55, further preferably 59, further preferably 62, and further preferably 75. The upper limit value of conditional expression (20) is more preferably set to 110, further preferably 105, further preferably 100, further preferably 98, further preferably 95, and further preferably 90.

[0200] The zoom lens preferably satisfies the following conditional expression (21). Here, the thickness on the optical axis of the positive lens group GP on the object side at the wide-angle end is set to DGPw. In addition, the "thickness on the optical axis" of a group refers to the distance on the optical axis from the lens surface closest to the object side of the group to the lens surface closest to the image side of the group. As an example, Figure 2 The thickness DGPw is shown in FIG. By ensuring that the corresponding value of conditional expression (21) does not fall below the lower limit, it is advantageous to suppress axial chromatic aberration. By ensuring that the corresponding value of conditional expression (21) does not fall above the upper limit, it is advantageous to reduce the size and weight of the zoom lens as a whole.

[0201] 0.04<DGPw / TLw<0.25 (21)

[0202] In order to obtain better characteristics, the lower limit of conditional expression (21) is more preferably set to 0.05, further preferably 0.06, and further preferably 0.08. The upper limit of conditional expression (21) is more preferably set to 0.2, further preferably 0.18, and further preferably 0.15.

[0203] The zoom lens preferably satisfies the following conditional expression (22). Here, the thickness of the object side negative group GN on the optical axis in the state of focusing on an infinitely distant object at the wide angle end is set to DGNw. As an example, Figure 2 The thickness DGNw is shown in FIG. By ensuring that the corresponding value of conditional expression (22) does not fall below the lower limit, it is advantageous to suppress aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (22) does not fall above the upper limit, it is advantageous to reduce the size and weight of the zoom lens as a whole.

[0204] 0.01<DGNw / TLw<0.35 (22)

[0205] In order to obtain better characteristics, the lower limit of conditional expression (22) is more preferably set to 0.03, more preferably 0.05, more preferably 0.07, more preferably 0.08, more preferably 0.09, and more preferably 0.1. The upper limit of conditional expression (22) is more preferably set to 0.3, more preferably 0.25, more preferably 0.2, more preferably 0.16, more preferably 0.13, and more preferably 0.11.

[0206] The zoom lens preferably satisfies the following conditional expression (23). Here, the thickness of the middle group GM on the optical axis at the wide-angle end is set to DGMw. As an example, Figure 2 The thickness DGMw is shown in FIG. By ensuring that the corresponding value of conditional expression (23) does not fall below the lower limit, it is advantageous to suppress aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (23) does not fall above the upper limit, it is advantageous to reduce the size and weight of the zoom lens as a whole.

[0207] 0.03<DGMw / TLw<0.45 (23)

[0208] In order to obtain better characteristics, the lower limit of conditional expression (23) is more preferably set to 0.05, more preferably 0.07, more preferably 0.09, more preferably 0.1, more preferably 0.13, more preferably 0.15, and more preferably 0.16. The upper limit of conditional expression (23) is more preferably set to 0.4, more preferably 0.38, more preferably 0.36, more preferably 0.34, more preferably 0.32, more preferably 0.3, and more preferably 0.28.

[0209] The zoom lens preferably satisfies the following conditional expression (24). Here, the thickness of the final group GE on the optical axis in the state of focusing on an infinitely distant object at the wide-angle end is set to DGEw. As an example, Figure 2 The thickness DGEw is shown in FIG. By ensuring that the corresponding value of conditional expression (24) does not fall below the lower limit, it is advantageous to suppress the change of astigmatism during zooming. By ensuring that the corresponding value of conditional expression (24) does not fall above the upper limit, it is advantageous to reduce the size and weight of the zoom lens as a whole.

[0210] 0.015<DGEw / TLw<0.4 (24)

[0211] In order to obtain better characteristics, the lower limit of conditional expression (24) is more preferably set to 0.016, further preferably 0.018, further preferably 0.025, further preferably 0.04, further preferably 0.06, further preferably 0.08, and further preferably 0.11. The upper limit of conditional expression (24) is more preferably set to 0.35, further preferably 0.3, further preferably 0.26, further preferably 0.24, further preferably 0.22, further preferably 0.2, and further preferably 0.19.

[0212] The zoom lens preferably satisfies the following conditional expression (25). Here, the thickness of the intermediate group GM on the optical axis at the telephoto end is set to DGMt. As an example, Figure 2 The thickness DGMT is shown in FIG. By ensuring that the corresponding value of conditional expression (25) does not fall below the lower limit, it is advantageous to suppress aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (25) does not fall above the upper limit, it is advantageous to reduce the size and weight of the zoom lens as a whole.

[0213] 0.02<DGMt / TLt<0.35 (25)

[0214] In order to obtain better characteristics, the lower limit of conditional expression (25) is more preferably set to 0.04, more preferably 0.06, more preferably 0.08, more preferably 0.1, more preferably 0.12, more preferably 0.13, and more preferably 0.14. The upper limit of conditional expression (25) is more preferably set to 0.3, more preferably 0.28, more preferably 0.26, more preferably 0.24, more preferably 0.22, more preferably 0.2, and more preferably 0.19.

[0215] The zoom lens preferably satisfies the following conditional expression (26). Here, the displacement of the lens surface closest to the object side of the object side positive group GP on the optical axis when zooming from the wide-angle end to the telephoto end is set to ΔGP. As an example, Figure 2The above-mentioned displacement ΔGP is shown in FIG. Furthermore, regarding the sign of ΔGP, when zooming from the wide-angle end to the telephoto end toward the object side, the sign is negative when the lens surface closest to the object side of the object-side positive group GP moves toward the object side, and positive when the lens surface moves toward the image side. By ensuring that the corresponding value of conditional expression (26) does not fall below the lower limit, it is advantageous to suppress aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (26) does not fall above the upper limit, it is advantageous to reduce the size and weight of the zoom lens as a whole.

[0216] -0.6<ΔGP / TLt<-0.04(26)

[0217] In order to obtain better characteristics, the lower limit of conditional expression (26) is more preferably -0.55, further preferably -0.52, further preferably -0.5, further preferably -0.45, further preferably -0.43, further preferably -0.4. The upper limit of conditional expression (26) is more preferably -0.05, further preferably -0.07, further preferably -0.1, further preferably -0.15, further preferably -0.2, further preferably -0.25.

[0218] The zoom lens preferably satisfies the following conditional expression (27). Here, the displacement of the lens surface on the optical axis of the object-side negative group GN closest to the object when zooming from the wide-angle end to the telephoto end while focusing on an object at infinity is set to ΔGN. As an example, Figure 2 The displacement ΔGN is shown in FIG. By ensuring that the corresponding value of conditional expression (27) does not fall below the lower limit, it is advantageous to suppress aberration fluctuations during zooming and to achieve a high zoom ratio. By ensuring that the corresponding value of conditional expression (27) does not fall above the upper limit, it is advantageous to miniaturize the entire zoom lens.

[0219] 0.002<| ΔGN| / TLt<0.35 (27)

[0220] In order to obtain better characteristics, the lower limit of conditional expression (27) is more preferably set to 0.003, further preferably 0.004, further preferably 0.005, further preferably 0.006, further preferably 0.007, and further preferably 0.008. The upper limit of conditional expression (27) is more preferably set to 0.3, further preferably 0.25, further preferably 0.23, further preferably 0.2, further preferably 0.19, and further preferably 0.18.

[0221] The zoom lens preferably satisfies the following conditional expression (28). Here, the displacement of the lens surface of the intermediate group GM closest to the object on the optical axis when zooming from the wide-angle end to the telephoto end is denoted as ΔGM. As an example, Figure 2 The above-mentioned displacement ΔGM is shown in FIG. By making the corresponding value of conditional expression (28) not fall below the lower limit, it is advantageous to suppress the aberration variation during zooming. By making the corresponding value of conditional expression (28) not fall above the upper limit, it is advantageous to miniaturize the entire zoom lens.

[0222] 0.001<| ΔGM| / TLt<0.4 (28)

[0223] In order to obtain better characteristics, the lower limit of conditional expression (28) is more preferably set to 0.01, more preferably 0.015, more preferably 0.02, more preferably 0.04, more preferably 0.06, and more preferably 0.08. The upper limit of conditional expression (28) is more preferably set to 0.35, more preferably 0.33, more preferably 0.31, more preferably 0.29, more preferably 0.27, and more preferably 0.25.

[0224] The zoom lens preferably satisfies the following conditional expression (29). By ensuring that the corresponding value of conditional expression (29) does not fall below the lower limit, it is advantageous to achieve a high zoom ratio. By ensuring that the corresponding value of conditional expression (29) does not fall above the upper limit, it is advantageous to achieve miniaturization.

[0225] -15<fGPw / fGNw<-1.8 (29)

[0226] In order to obtain better characteristics, the lower limit of conditional expression (29) is more preferably -10, further preferably -8, further preferably -7.4, further preferably -7. The upper limit of conditional expression (29) is more preferably -2, further preferably -2.5, further preferably -3, further preferably -3.6.

[0227] The zoom lens preferably satisfies the following conditional expression (30). By ensuring that the corresponding value of conditional expression (30) does not fall below the lower limit, it is advantageous to suppress aberration changes on the telephoto side during zooming. By ensuring that the corresponding value of conditional expression (30) does not fall above the upper limit, it is advantageous to suppress aberration changes on the wide-angle side during zooming.

[0228] 0.5<fGMt / fGMw<3 (30)

[0229] In order to obtain better characteristics, the lower limit of conditional expression (30) is more preferably set to 0.6, further preferably to 0.65, further preferably to 0.7. The upper limit of conditional expression (30) is more preferably set to 2, further preferably to 1.5, further preferably to 1.1.

[0230] The zoom lens preferably satisfies the following conditional expression (31). By ensuring that the corresponding value of conditional expression (31) does not fall below the lower limit, the amount of movement of the object-side negative group GN during zooming is reduced. By ensuring that the corresponding value of conditional expression (31) does not exceed the upper limit, lateral chromatic aberration at the wide-angle end is effectively corrected.

[0231] -3<fGNw / fGMw<-0.1 (31)

[0232] In order to obtain better characteristics, the lower limit of conditional expression (31) is more preferably -2.5, more preferably -2, more preferably -1.7, more preferably -1.5, more preferably -1.2, more preferably -1, and more preferably -0.68. The upper limit of conditional expression (31) is more preferably -0.15, more preferably -0.2, more preferably -0.25, more preferably -0.3, more preferably -0.35, more preferably -0.4, and more preferably -0.45.

[0233] The zoom lens preferably satisfies the following conditional expression (32). By ensuring that the corresponding value of conditional expression (32) does not fall below the lower limit, the refractive power of the object-side positive lens group GP is prevented from becoming excessively strong, thereby facilitating particularly good correction of spherical aberration and axial chromatic aberration at the telephoto end. By ensuring that the corresponding value of conditional expression (32) does not fall above the upper limit, the refractive power of the object-side positive lens group GP is prevented from becoming excessively weak, thereby suppressing the reduction in the amount of movement of the object-side positive lens group GP during zooming, thereby contributing to miniaturization of the lens system.

[0234] 0.15<fGPw / |fGEw|<10 (32)

[0235] In order to obtain better characteristics, the lower limit of conditional expression (32) is more preferably set to 0.2, more preferably 0.25, more preferably 0.3, more preferably 0.35, more preferably 0.4, more preferably 0.45, and more preferably 0.5. The upper limit of conditional expression (32) is more preferably set to 9.5, more preferably 9, more preferably 8.5, more preferably 8, more preferably 7.5, more preferably 7, and more preferably 6.5.

[0236] The zoom lens preferably satisfies the following conditional expression (33). By ensuring that the corresponding value of conditional expression (33) does not fall below the lower limit, it is advantageous to achieve a high zoom ratio while ensuring a sufficient back focus at the wide-angle end. By ensuring that the corresponding value of conditional expression (33) does not fall above the upper limit, the image-side principal point position can be brought closer to the object side, thereby facilitating a reduction in the overall length of the optical system.

[0237] -2<fGMw / fGEw<5 (33)

[0238] In order to obtain better characteristics, the lower limit value of the conditional expression (33) is more preferably set to -1.5, further preferably -1, further preferably -0.5, further preferably 0, further preferably 0.5, further preferably 1. The upper limit value of the conditional expression (33) is more preferably set to 4, further preferably 3, further preferably 2.5, further preferably 2.2, further preferably 2, further preferably 1.5.

[0239] The zoom lens preferably satisfies the following conditional expression (34). Here, the distance on the optical axis from the lens surface closest to the object side of the object-side positive group GP in the state of focusing on an infinitely distant object at the wide-angle end to the paraxial entrance pupil position Penw is set as Denw. As an example, Figure 2 The paraxial entrance pupil position Penw and distance Denw are shown in FIG. By ensuring that the corresponding value of conditional expression (34) does not fall below the lower limit, it is advantageous to suppress aberration fluctuations during zooming. By ensuring that the corresponding value of conditional expression (34) does not exceed the upper limit, it is possible to suppress the increase in the diameter of the object-side positive group GP, thereby facilitating miniaturization.

[0240] 0.5<Denw / fw<3 (34)

[0241] In order to obtain better characteristics, the lower limit of conditional expression (34) is more preferably set to 0.65, further preferably 0.8, further preferably 0.9, further preferably 1, further preferably 1.2, and further preferably 1.4. The upper limit of conditional expression (34) is more preferably set to 2.6, further preferably 2.2, further preferably 2, further preferably 1.8, further preferably 1.7, and further preferably 1.6.

[0242] The zoom lens preferably satisfies the following conditional expression (35). Here, the distance from the paraxial exit pupil position Pexw in the state of focusing on an infinitely distant object at the wide-angle end to the optical axis of the image plane Sim is referred to as Dexw. However, when an optical component without refractive power is arranged between the paraxial exit pupil position Pexw and the image plane Sim, Dexw is calculated for the optical component using the air conversion distance. As an example, Figure 2 The paraxial exit pupil position Pexw is shown in FIG. By ensuring that the corresponding value of conditional expression (35) does not fall below the lower limit, the angle of incidence of the off-axis principal ray on the image plane Sim can be reduced, thereby facilitating the securing of the amount of peripheral light. By ensuring that the corresponding value of conditional expression (35) does not fall above the upper limit, the total length of the optical system can be shortened, thereby facilitating miniaturization.

[0243] 1.2<Dexw / (fw×tanωw)<8 (35)

[0244] In order to obtain better characteristics, the lower limit value of the conditional expression (35) is more preferably set to 1.5, further preferably 2, further preferably 2.3, further preferably 2.5, further preferably 2.8, further preferably 3. The upper limit value of the conditional expression (35) is more preferably set to 7, further preferably 6.8, further preferably 6.4, further preferably 5.5, further preferably 4.8, further preferably 4.

[0245] The zoom lens preferably satisfies the following conditional expression (36). Here, the open F-number at the telephoto end, when focusing on an object at infinity, is set to Fnot. By ensuring that the corresponding value of conditional expression (36) does not fall below the lower limit, it is advantageous to reduce the F-number at the telephoto end while miniaturizing the overall length. By ensuring that the corresponding value of conditional expression (36) does not fall above the upper limit, it is advantageous to suppress various aberrations throughout the entire zoom range.

[0246] 1<ft×Fnot / TLt<10.5 (36)

[0247] In order to obtain better characteristics, the lower limit value of the conditional expression (36) is more preferably set to 1.2, further preferably to 1.4, further preferably to 1.6, further preferably to 1.8, further preferably to 2. The upper limit value of the conditional expression (36) is more preferably set to 8.6, further preferably to 6, further preferably to 5.5, further preferably to 5, further preferably to 4.7, further preferably to 4, further preferably to 3, further preferably to 2.5.

[0248] 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 lens groups included in each of the object side positive lens group GP, the object side negative lens group GN, the intermediate lens group GM, and the final lens group GE can also be set to the same number as the number of lens groups included in the object side positive lens group GP, the object side negative lens group GN, the intermediate lens group GM, and the final lens group GE. Figure 1 Furthermore, the number of lenses included in each lens group, the number of lenses included in the focus group, and the number of lenses included in the anti-vibration group may also be set to be different from the number of lenses included in the focus group. Figure 1 The lens corresponding to the focus group, the lens corresponding to the anti-vibration 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.

[0249] The object-side negative group GN may also be composed of two lens groups. In this case, it is advantageous to suppress aberration fluctuations during zooming.

[0250] The middle group GM may be configured to include three lens groups. In this case, the middle group GM is more advantageous in suppressing aberration fluctuations during zooming, compared to a configuration including two lens groups.

[0251] Alternatively, during focusing, the entire or a portion of the final lens group GE can be moved along the optical axis Z. This configuration advantageously reduces air leakage. Furthermore, when the focusing group is included in the final lens group GE, the anti-vibration group can be included in the object-side negative lens group GN. By arranging the anti-vibration group within the object-side negative lens group GN, which has a relatively small lens outer diameter, the anti-vibration mechanism can be miniaturized, thereby facilitating miniaturization of the entire lens assembly.

[0252] The anti-vibration group may be configured to include the second lens group from the image side of the middle group GM. Alternatively, the anti-vibration group may be configured to include only a part of the lens groups included in the middle group GM.

[0253] The aperture stop St may be configured to be included in the final group GE. In this case, it is advantageous to reduce the diameter of the final group GE.

[0254] During zooming, the lens group closest to the object side of the object-side positive group can also be configured to be fixed to the image plane. In this case, the total length during zooming remains unchanged, thereby reducing the change in the center of gravity during zooming, thereby improving convenience during shooting.

[0255] Alternatively, the lens group closest to the image side of the final lens group GE may be moved during zooming, which is advantageous in suppressing aberration fluctuations during zooming.

[0256] The above-mentioned preferred structures and possible structures can be arbitrarily combined within the scope of no contradiction, and are preferably appropriately and selectively adopted according to the required specifications.

[0257] As an example, in a preferred embodiment of the zoom lens of the present invention, from the object side to the image side, it includes, in sequence, an object side positive group GP having positive refractive power, an object side negative group GN having negative refractive power, an intermediate group GM, and a final group GE. The object side positive group GP, the object side negative group GN, the intermediate group GM, and the final group GE each include at least one lens group, and when changing the magnification, all intervals between adjacent lens groups change and the intervals between all lenses in each lens group remain unchanged. When focusing, all lenses in the object side positive group GP and all lenses in the intermediate group GM are fixed to the image plane Sim, and the zoom lens satisfies the above-mentioned conditional formula (1).

[0258] Next, embodiments of the zoom lens of the present invention will be described with reference to the accompanying drawings. Reference numerals used in the groups of cross-sectional views of each embodiment are used independently for each embodiment to avoid complication in the description and drawings due to an increase in the number of digits in the reference numerals. Therefore, even if the same reference numerals are used in the drawings of different embodiments, they do not necessarily represent identical structures.

[0259] [Example 1]

[0260] The structure and movement trajectory of the zoom lens of Example 1 are shown in FIG. Figure 1 , its diagramming method and structure are as described above, so some repeated descriptions are omitted here. The zoom lens of Example 1 includes, from the object side to the image side, an object side positive group GP, an object side negative group GN, an intermediate group GM, and a final group GE. The object side positive group GP includes one lens group having positive refractive power. The object side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, from the object side to the image side, two lens groups, namely, a 1M-th lens group GM1 having positive refractive power and a 2M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0261] When zooming from the wide-angle end to the telephoto end, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This group comprises three lenses, the first through third lenses from the object side, of the negative lens group GN on the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0262] 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.

[0263] The table of basic lens data is as follows. The Sn column shows the surface numbers, with the surface closest to the object as surface 1 and increasing in number toward the image side. The R column shows the radius of curvature of each surface. The D column shows the distance on the optical axis between each surface and the surface adjacent to its image side. The Nd column shows the refractive index of each lens with respect to the d-line. The vd column shows the Abbe number of each lens based on the d-line. The θgF column shows the partial dispersion ratio between the g-line and the F-line for each lens.

[0264] 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 θgF, θgF is defined by the following formula.

[0265] θgF=(Ng-NF) / (NF-NC)

[0266] 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).

[0267] 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 surface of the aperture stop St contains 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. The variable surface spacing during magnification is marked with the symbol DD[], and the object-side surface number of the spacing is marked in [] and recorded in column D.

[0268] Table 2 shows the zoom ratio Zr, focal length f, back focus Bf at air-equivalent distance, open F-number FNo., maximum total angle of view 2ω, and variable plane spacing, based on the d-line. The zoom ratio has the same meaning as the zoom factor. The [°] in the 2ω column indicates degrees. In Table 2, the columns labeled "Wide," "Middle," and "Tele" show the values ​​for the wide-angle end, middle focal length, and telephoto end, respectively.

[0269] 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 16th surface of Example 1, m = 4, 6, 8, 10, 12, 14, 16. 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.

[0270] Zd=C×h 2 / {1+(1-KA×C 2 ×h 2 ) 1 / 2 )+∑Am×h m

[0271] in,

[0272] Zd: depth of aspheric surface (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);

[0273] h: height (the distance from the optical axis Z to the lens surface);

[0274] C: the reciprocal of the paraxial curvature radius;

[0275] KA, Am: aspheric coefficients,

[0276] The ∑ in the aspherical expression is the sum related to m.

[0277] 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 magnification and reduction ratios, other appropriate units can also be used. Furthermore, the values ​​in the following tables are rounded to a predetermined number of digits.

[0278] [Table 1]

[0279] Example 1

[0280] Sn R D Nd vd θgF 1 111.3894 2.2498 1.91082 35.25 0.5822 2 61.9160 8.1973 1.49700 81.54 0.5375 3 -274.7607 0.2002 4 62.3341 8.5002 1.43875 94.66 0.5340 5 -499.9508 DD[5] 6 -567.6755 2.4999 1.57099 50.80 0.5589 7 37.8542 4.9998 8 -62.3122 1.3098 1.49700 81.54 0.5375 9 50.6016 3.4998 1.96300 24.11 0.6213 10 289.0587 16.1955 11 -64.8481 1.1002 1.58913 61.13 0.5407 12 864.0494 1.6295 13 -57.8552 1.0002 1.51680 64.20 0.5343 14 356.8210 DD

[14] 15(St) ∞ 1.2998 *16 43.3770 6.3526 1.49710 81.56 0.5385 *17 -43.1162 2.7054 18 95.2050 8.1432 1.43875 94.66 0.5340 19 -24.9998 1.0101 1.56732 42.82 0.5731 20 -31.3338 0.1000 21 -3866.5265 4.3181 1.49700 81.54 0.5375 22 -41.0060 DD

[22] 23 -155.8406 3.7939 1.83481 42.74 0.5649 24 -31.9858 0.9598 1.72047 34.71 0.5835 25 33.0734 8.3679 26 -80.4775 0.9998 1.85150 40.78 0.5696 27 51.6572 DD

[27] 28 58.8331 4.8108 1.80518 25.42 0.6162 29 -60.4693 10.0000 30 -71.0811 5.5098 1.48749 70.24 0.5301 31 -21.5513 1.0002 1.95375 32.32 0.5901 32 -51.2427 20.0540 33 ∞ 2.8500 1.54763 54.98 0.5525 34 ∞ 1.0219

[0281] [Table 2]

[0282] Example 1

[0283] Wide Middle Tele Zr 1.0 1.5 2.6 f 48.42 74.53 127.79 Bf 22.92 22.92 22.92 FNo. 2.88 2.88 2.89 2ω[°] 34.0 21.4 12.4 DD[5] 2.7071 18.0754 29.5806 DD

[14] 20.7702 14.5243 2.9796 DD

[22] 1.9999 2.3969 3.3398 DD

[27] 4.9997 5.2928 7.7602

[0284] [Table 3]

[0285] Example 1

[0286] Sn 16 17 KA 1.0000000E+00 1.0000000E+00 A4 -1.2419408E-05 1.2035504E-05 A6 5.6164927E-09 1.0843346E-08 A8 -3.6265670E-11 -4.2052493E-11 A10 -2.1952852E-13 3.7499070E-14 A12 3.6696294E-16 -3.0837923E-16 A14 -7.2818234E-19 -1.5237933E-18 A16 -1.0418293E-20 -3.3319023E-21

[0287] exist Figure 3 , various aberration diagrams are shown when the zoom lens of Example 1 is focused on an object at infinity. Figure 3 In the figure, spherical aberration, astigmatism, distortion and lateral chromatic aberration are shown from the left. Figure 3 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 along the d-line, C-line, F-line, and g-line are shown as solid lines, long dashed lines, short dashed lines, and dashed lines, respectively. In the astigmatism diagram, aberrations along the d-line in the sagittal direction are shown as solid lines, and aberrations along the d-line in the meridional direction are shown as short dashed lines. In the distortion diagram, aberrations along the d-line are shown as solid lines. In the lateral chromatic aberration diagram, aberrations along the C-line, F-line, and g-line are shown as long dashed lines, short dashed lines, and 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=.

[0288] Unless otherwise specified, the symbols, meanings, recording methods and graphical representation 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.

[0289] [Example 2]

[0290] The structure and movement trajectory of the zoom lens of Example 2 are shown in FIG. Figure 4 . The zoom lens of Example 2 includes, from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, from the object side to the image side, two lens groups, namely, a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0291] When zooming from the wide-angle end to the telephoto end, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This group comprises three lenses, the first through third lenses from the object side, of the negative lens group GN on the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0292] Regarding the zoom lens of Example 2, basic lens data are shown in Table 4, 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 5 .

[0293] [Table 4]

[0294] Example 2

[0295] Sn R D Nd vd θgF 1 101.6291 2.2498 1.74950 35.33 0.5819 2 66.5974 7.0198 1.49700 81.54 0.5375 3 -724.5520 0.2002 4 89.2447 6.7998 1.43875 94.66 0.5340 5 -415.4053 DD[5] *6 48.8253 1.4998 1.51633 64.06 0.5334 *7 33.0200 4.0002 8 -117.4667 1.3098 1.49700 81.54 0.5375 9 41.8875 3.4998 1.89286 20.36 0.6394 10 67.3213 17.1299 11 -41.8005 1.0998 1.72916 54.68 0.5445 12 685.6389 DD

[12] 13(St) ∞ 1.2998 *14 42.7676 4.4998 1.49710 81.56 0.5385 *15 -38.7584 0.1998 16 44.6279 5.0098 1.43875 94.66 0.5340 17 -92.6481 1.0853 2.10420 17.02 0.6631 18 -316.7705 0.1000 19 94.5639 6.0568 1.49700 81.54 0.5375 20 -26.9042 DD

[20] 21 -99.7889 3.4998 2.05090 26.94 0.6052 22 -40.9244 0.9598 1.72916 54.68 0.5445 23 24.0712 2.4999 24 75.6605 1.0000 1.72916 54.68 0.5445 25 32.4346 DD

[25] *26 25.7981 3.0000 2.00178 19.32 0.6448 *27 31.0914 8.6941 28 657.9443 3.5185 1.88100 40.14 0.5701 29 -50.8129 0.0998 30 61.7795 4.0000 2.00069 25.46 0.6136 31 518.6742 1.0102 1.85896 22.73 0.6284 32 26.7314 19.0536 33 ∞ 2.8500 1.54763 54.98 0.5525 34 ∞ 1.0205

[0296] [Table 5]

[0297] Example 2

[0298] Wide Middle Tele Zr 1.0 1.5 2.6 f 47.86 73.67 126.32 Bf 21.92 21.92 21.92 FNo. 2.88 2.88 3.00 2ω[°] 33.4 21.2 12.4 DD[5] 1.3002 15.0157 25.3602 DD

[12] 24.4848 15.8924 2.9527 DD

[20] 2.0002 2.0238 1.9720 DD

[25] 4.9796 11.6742 27.4689

[0299] [Table 6]

[0300] Example 2

[0301]

[0302] [Example 3]

[0303] The structure and movement trajectory of the zoom lens of Example 3 are shown in FIG. Figure 6. The zoom lens of Example 3 includes, from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, from the object side to the image side, two lens groups, a 1stM lens group GM1 having positive refractive power and a 2ndM lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM lens group GM1.

[0304] When zooming from the wide-angle end to the telephoto end, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This group comprises two lenses, the first and second from the image side, of the negative lens group GN on the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group includes the second M lens group GM2.

[0305] Regarding the zoom lens of Example 3, 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 7 .

[0306] [Table 7]

[0307] Example 3

[0308] Sn R D Nd vd θgF 1 253.9889 2.2498 1.66672 48.32 0.5610 2 62.6552 7.0198 1.49700 81.54 0.5375 3 -1007.9041 0.1998 4 63.2451 5.4998 1.43875 94.66 0.5340 5 380.5695 DD[5] *6 27.1426 4.5002 1.85135 40.10 0.5695 *7 64.8024 4.4875 8 1405.4396 1.2998 1.72916 54.68 0.5445 9 19.8295 13.3428 10 -32.1727 2.0098 1.74077 27.79 0.6096 11 -23.8100 1.0000 1.75500 52.32 0.5476 12 2232.2602 DD

[12] 13(St) ∞ 1.2998 *14 40.3562 5.4833 1.49710 81.56 0.5385 *15 -33.4300 0.1998 16 61.5842 8.7676 1.43875 94.66 0.5340 17 -24.9998 1.9378 1.98613 16.48 0.6656 18 -31.5110 0.0998 19 244.1655 4.6387 1.49700 81.54 0.5375 20 -32.3536 DD

[20] 21 -2841.4344 3.5002 2.10420 17.02 0.6631 22 -84.6397 1.5091 1.75500 52.32 0.5476 23 15.8832 5.9443 24 -19.1633 0.9998 1.51680 64.20 0.5343 25 -30.7365 DD

[25] *26 149.5478 7.2157 1.51633 64.06 0.5334 *27 -21.3479 0.9998 28 -35.0332 4.4998 1.48749 70.24 0.5301 29 -20.9562 1.0098 1.51742 52.43 0.5565 30 -133.6070 18.2250 31 ∞ 2.8500 1.54763 54.98 0.5525 32 ∞ 1.0114

[0309] [Table 8]

[0310] Example 3

[0311] Wide Middle Tele Zr 1.0 1.5 2.6 f 51.17 78.77 135.05 Bf 21.08 21.08 21.08 FNo. 2.88 2.88 2.94 2ω[°] 31.4 20.4 12.0 DD[5] 1.9892 21.7130 45.6342 DD

[12] 21.1715 12.0770 2.9639 DD

[20] 1.9998 2.9263 3.4833 DD

[25] 8.8448 14.1917 21.2211

[0312] [Table 9]

[0313] Example 3

[0314]

[0315] [Example 4]

[0316] The structure and movement trajectory of the zoom lens of Example 4 are shown in FIG. Figure 8. The zoom lens of Example 4 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1stM lens group GM1 having positive refractive power and a 2ndM lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM lens group GM1.

[0317] When zooming from the wide-angle position to the telephoto position, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This focusing group consists of the single lens closest to the image side, the negative lens group GN on the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group includes the second M-th lens group GM2.

[0318] Regarding the zoom lens of Example 4, 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 9 .

[0319] [Table 10]

[0320] Example 4

[0321] Sn R D Nd vd θgF 1 112.5378 2.2498 1.91650 31.60 0.5912 2 64.2134 7.0199 1.49700 81.54 0.5375 3 279.0310 0.1999 4 76.4118 6.7998 1.43875 94.66 0.5340 5 -665.0768 DD[5] *6 67.9408 2.1606 2.00178 19.32 0.6448 *7 61.7076 3.7932 8 -238.8919 1.1098 1.49700 81.54 0.5375 9 26.5642 3.4998 1.98613 16.48 0.6656 10 37.9008 10.0919 *11 -26.0477 1.1000 1.51633 64.06 0.5334 *12 73.3224 DD

[12] 13(St) ∞ 1.3000 *14 48.0953 5.4331 1.49710 81.56 0.5385 *15 -35.9908 0.5784 16 64.1146 10.0102 1.43875 94.66 0.5340 17 -24.9998 1.4388 1.95906 17.47 0.6599 18 -29.2832 0.1000 19 -90.0654 3.8959 1.49700 81.54 0.5375 20 -34.0355 DD

[20] 21 657.8134 4.1285 2.05090 26.94 0.6052 22 -36.0388 0.9601 1.84666 23.78 0.6205 23 29.9262 4.3445 24 -39.9712 1.0000 1.95375 32.32 0.5901 25 164.2657 DD

[25] *26 52.5133 5.0000 2.00178 19.32 0.6448 *27 -58.1718 11.9572 28 136.0172 3.8367 1.51742 52.43 0.5565 29 -39.6957 0.9998 2.00069 25.46 0.6136 30 31.1927 4.8550 1.51742 52.43 0.5565 31 -113.3294 18.3026 32 ∞ 2.8500 1.54763 54.98 0.5525 33 ∞ 1.0161

[0322] [Table 11]

[0323] Example 4

[0324] Wide Middle Tele Zr 1.0 1.5 2.6 f 48.36 74.43 127.62 Bf 21.16 21.16 21.16 FNo. 2.88 2.88 2.90 2ω[°] 33.4 21.4 12.4 DD[5] 1.9968 33.5598 58.0003 DD

[12] 17.2747 11.8158 2.9919 DD

[20] 2.0001 3.2287 5.7953 DD

[25] 8.9914 7.0738 4.9806

[0325] [Table 12]

[0326] Example 4

[0327]

[0328] [Example 5]

[0329] The structure and movement trajectory of the zoom lens of Example 5 are shown in FIG. Figure 10The zoom lens of Example 5 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1M-th lens group GM1 having positive refractive power and a 2M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0330] When zooming from the wide-angle position to the telephoto position, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This focusing group consists of the single lens closest to the image side, the negative lens group GN on the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group includes the second M-th lens group GM2.

[0331] Regarding the zoom lens of Example 5, 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 11 middle.

[0332] [Table 13]

[0333] Example 5

[0334] Sn R D Nd vd θgF 1 101.6299 2.2498 1.80610 33.27 0.5885 2 64.0986 7.0198 1.49700 81.54 0.5375 3 309.4385 0.1998 4 81.3138 6.7998 1.43875 94.66 0.5340 5 22235.9155 DD[5] 6 35.6996 3.6492 1.80809 22.76 0.6307 7 126.6377 1.1098 1.65160 58.54 0.5390 8 21.4125 6.2653 9 -129.1274 1.3098 1.78472 25.68 0.6162 10 23.7538 3.4998 2.05090 26.94 0.6052 11 116.9497 12.1440 *12 -29.3830 1.0998 1.51633 64.06 0.5334 *13 86.1432 DD

[13] 14(St) ∞ 1.2998 *15 37.1871 6.3071 1.49710 81.56 0.5385 *16 -37.0608 0.2736 17 85.1295 8.2386 1.43875 94.66 0.5340 18 -24.9998 1.0165 1.98613 16.48 0.6656 19 -30.3607 0.1000 20 171.4293 5.3648 1.49700 81.54 0.5375 21 -34.5797 DD

[21] 22 -65.8345 3.3592 1.98613 16.48 0.6656 23 -40.1462 0.9600 1.51742 52.43 0.5565 24 20.1497 3.0000 25 61.1951 0.9998 1.72916 54.68 0.5445 26 24.3224 DD

[26] *27 22.0371 5.0332 1.51633 64.06 0.5334 *28 26.9355 2.7294 29 140.7640 1.7142 1.95375 32.32 0.5901 30 22.8133 10.0102 1.63980 34.47 0.5923 31 -40.0952 25.0219 32 ∞ 2.8500 1.54763 54.98 0.5525 33 ∞ 1.0060

[0335] [Table 14]

[0336] Example 5

[0337] Wide Middle Tele Zr 1.0 1.5 2.6 f 51.65 79.51 136.33 Bf 27.87 27.87 27.87 FNo. 2.88 2.88 2.91 2ω[°] 30.6 20.0 11.8 DD[5] 1.9931 25.0861 48.8920 DD

[13] 16.7700 10.7082 2.9828 DD

[21] 1.9998 2.5241 2.7974 DD

[26] 4.9927 10.9289 16.6193

[0338] [Table 15]

[0339] Example 5

[0340]

[0341] [Example 6]

[0342] The structure and movement trajectory of the zoom lens of Example 6 are shown in FIG. Figure 12. The zoom lens of Example 6 includes, from the object side to the image side, an object side positive group GP, an object side negative group GN, an intermediate group GM, and a final group GE. The object side positive group GP includes one lens group having positive refractive power. The object side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, from the object side to the image side, three lens groups: a 1M-th lens group GM1 having positive refractive power, a 2M-th lens group GM2 having negative refractive power, and a 3M-th lens group GM3 having positive refractive power. The final group GE includes one lens group having negative refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0343] When zooming from the wide-angle position to the telephoto position, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This focusing group consists of the single lens closest to the image side, the negative lens group GN on the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group includes the second M-th lens group GM2.

[0344] Regarding the zoom lens of Example 6, 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 13 middle.

[0345] [Table 16]

[0346] Example 6

[0347] Sn R D Nd vd θgF 1 101.6298 2.2498 1.90110 27.06 0.6072 2 62.8070 7.0198 1.49700 81.54 0.5375 3 243.4924 0.1998 4 73.6249 6.7998 1.43875 94.66 0.5340 5 -29119.8134 DD[5] *6 -262.5447 2.5002 1.82115 24.06 0.6237 *7 -53.0492 0.9998 8 -66.6483 1.3100 1.64000 60.08 0.5370 9 22.3830 3.4998 1.84666 23.78 0.6205 10 36.4729 10.2039 *11 -27.4716 1.0998 1.58913 61.25 0.5374 *12 111.1680 DD

[12] 13(St) ∞ 1.2998 *14 44.1708 5.8515 1.49710 81.56 0.5385 *15 -34.9462 0.1998 16 57.1727 10.0100 1.43875 94.66 0.5340 17 -25.7053 0.9998 2.10420 17.02 0.6631 18 -28.7137 0.1000 19 -53.9354 2.9998 1.49700 81.54 0.5375 20 -33.2910 DD

[20] 21 519.5504 3.8617 2.05090 26.94 0.6052 22 -39.9331 0.9598 1.80809 22.76 0.6307 23 30.9582 4.3414 24 -42.0002 0.9998 2.05090 26.94 0.6052 25 161.1021 DD

[25] *26 61.5389 4.4998 2.00178 19.32 0.6448 *27 -67.8520 DD

[27] 28 -36.0237 3.5099 1.51680 64.20 0.5343 29 -21.4250 1.0002 2.00272 19.32 0.6451 30 -35.7475 18.3015 31 ∞ 2.8500 1.54763 54.98 0.5525 32 ∞ 1.0084

[0348] [Table 17]

[0349] Example 6

[0350] Wide Middle Tele Zr 1.0 1.5 2.6 f 48.40 74.51 127.75 Bf 21.15 21.15 21.15 FNo. 2.88 2.88 2.88 2ω[°] 33.8 21.8 12.8 DD[5] 1.9964 33.9897 58.0008 DD

[12] 15.9958 11.3186 2.9825 DD

[20] 1.9998 2.5127 4.8252 DD

[25] 10.6824 7.9296 4.9936 DD

[27] 19.0371 20.3507 20.4930

[0351] [Table 18]

[0352] Example 6

[0353]

[0354] [Example 7]

[0355] The structure and movement trajectory of the zoom lens of Example 7 are shown in FIG. Figure 14. The zoom lens of Example 7 includes, from the object side to the image side, an object side positive group GP, an object side negative group GN, an intermediate group GM, and a final group GE. The object side positive group GP includes one lens group having positive refractive power. The object side negative group GN includes, from the object side to the image side, two lens groups, namely, a 1Nth lens group GN1 having positive refractive power and a 2Nth lens group GN2 having negative refractive power. The intermediate group GM includes, from the object side to the image side, two lens groups, namely, a 1Mth lens group GM1 having positive refractive power and a 2Mth lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1Mth lens group GM1.

[0356] When zooming from the wide-angle end to the telephoto end, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. This focusing group comprises the first and second lenses from the image side of the 2N lens group GN2. When focusing from an object at infinity to an object at close range, the focusing group moves toward the object. The anti-vibration group includes the 2M lens group GM2.

[0357] Regarding the zoom lens of Example 7, 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 15 middle.

[0358] [Table 19]

[0359] Example 7

[0360] Sn R D Nd vd θgF 1 101.6288 2.2698 1.57501 41.50 0.5767 2 43.4976 7.1530 1.49700 81.54 0.5375 3 142.5938 0.1998 4 81.0671 5.4998 1.43875 94.66 0.5340 5 889.1019 DD[5] *6 25.9659 4.3763 1.88202 37.22 0.5770 *7 44.0877 DD[7] 8 118.9783 1.2998 1.72916 54.68 0.5445 9 17.9567 10.3418 10 -36.7929 3.4496 1.68893 31.07 0.6004 11 -18.8855 1.0000 1.80400 46.53 0.5578 12 -167.9044 DD

[12] 13(St) ∞ 1.2998 *14 44.2510 5.2821 1.49710 81.56 0.5385 *15 -39.0192 0.1998 16 58.2112 9.0050 1.43875 94.66 0.5340 17 -25.0000 1.1803 2.10420 17.02 0.6631 18 -31.0391 0.0999 19 133.7621 4.8292 1.49700 81.54 0.5375 20 -34.5458 DD

[20] 21 -118.1317 4.5002 1.98613 16.48 0.6656 22 -43.6248 0.9598 1.72916 54.68 0.5445 23 19.0939 5.2625 24 -29.9949 0.9998 1.51680 64.20 0.5343 25 -84.2491 DD

[25] *26 217.4563 6.2337 1.58913 61.25 0.5374 *27 -29.1078 8.3491 28 -23.2387 1.0998 1.94595 17.98 0.6546 29 -28.5980 18.3171 30 ∞ 2.8500 1.54763 54.98 0.5525 31 ∞ 1.0154

[0361] [Table 20]

[0362] Example 7

[0363] Wide Middle Tele Zr 1.0 1.5 2.6 f 48.49 74.64 127.98 Bf 21.17 21.17 21.17 FNo. 2.88 2.88 2.90 2ω[°] 33.6 21.6 12.6 DD[5] 1.9953 22.8442 42.3768 DD[7] 6.2350 7.0919 7.6207 DD

[12] 23.6660 14.0388 2.9824 DD

[20] 1.9998 2.8807 4.0054 DD

[25] 4.4222 9.3045 21.0287

[0364] [Table 21]

[0365] Example 7

[0366]

[0367] [Example 8]

[0368] The structure and movement trajectory of the zoom lens of Example 8 are shown in FIG. Figure 16The zoom lens of Example 8 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having positive refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0369] When zooming from the wide-angle end to the telephoto end, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This focusing group consists of the single lens closest to the image side of the object-side negative lens group GN. When focusing from an object at infinity to an object at close range, the focusing group moves toward the object. The anti-vibration group consists of the first and second lenses from the image side of the first M lens group GM1.

[0370] Regarding the zoom lens of Example 8, 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 17 middle.

[0371] [Table 22]

[0372] Example 8

[0373] Sn R D Nd vd θgF 1 135.8962 1.3000 1.89286 20.36 0.6394 2 68.7740 5.6326 1.59282 68.62 0.5441 3 -622.9654 0.0999 4 51.7074 3.7137 1.76385 48.49 0.5590 5 148.3044 DD[5] *6 656.2350 1.2031 1.85060 41.62 0.5645 *7 17.0845 6.1695 8 -42.0620 0.8502 1.81600 46.59 0.5566 9 45.0577 0.3998 10 30.5836 4.1216 1.92286 20.88 0.6390 11 -57.7616 6.2922 *12 -26.5545 0.8306 1.72903 54.04 0.5447 *13 168.9694 DD

[13] *14 18.6812 3.5615 1.65670 62.28 0.5421 *15 -157.5818 1.1553 16(St) ∞ 2.9323 17 28.2284 3.5169 1.49700 81.54 0.5375 18 -29.2027 0.8498 1.94595 17.98 0.6546 19 -147.5385 2.0002 20 -53.6907 1.9396 2.00171 20.66 0.6347 21 -22.1027 0.8598 1.74950 35.33 0.5819 22 48.4615 DD

[22] *23 25.4758 4.4341 1.63860 63.43 0.5427 *24 -31.1182 4.6232 25 -24.3965 1.3502 1.85150 40.78 0.5696 26 36.5514 2.9614 1.69895 30.13 0.6030 27 -83.6957 DD

[27] 28 -74.8014 2.1505 1.72916 54.61 0.5443 29 -43.3560 17.1613 30 ∞ 2.8500 1.54763 54.98 0.5525 31 ∞ 1.0248

[0374] [Table 23]

[0375] Example 8

[0376] Wide Middle Tele Zr 1.0 2.4 7.1 f 18.50 44.81 130.77 Bf 20.03 20.03 20.03 FNo. 3.60 4.58 5.81 2ω[°] 81.0 35.2 12.6 DD[5] 0.7000 17.8934 36.7565 DD

[13] 14.6994 7.3329 1.1912 DD

[22] 4.1817 3.0195 2.4266 DD

[27] 2.0000 21.6359 46.7425

[0377] [Table 24]

[0378] Example 8

[0379]

[0380] [Example 9]

[0381] The structure and movement trajectory of the zoom lens of Example 9 are shown in FIG. Figure 18. The zoom lens of Example 9 includes, from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, from the object side to the image side, two lens groups, namely, a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having positive refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0382] When zooming from the wide-angle end to the telephoto end, the final lens group GE is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This focusing group includes a negative lens group GN on the object side. When focusing from an object at infinity to an object at close range, the focusing group moves toward the object. The anti-vibration group consists of the first and second lenses from the image side of the first M lens group GM1.

[0383] Regarding the zoom lens of Example 9, 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 19 middle.

[0384] [Table 25]

[0385] Example 9

[0386] Sn R D Yes etc. θgF 1 130.4890 1.3000 1.94595 17.98 0.6546 2 80.5823 4.5671 1.61800 63.32 0.5427 3 -6784.2120 0.1002 4 57.0518 3.4967 1.72916 54.54 0.5454 5 161.8048 DD[5] *6 -323.7418 1.2002 1.85135 40.23 0.5605 *7 19.2387 6.0687 8 -35.5893 0.8502 1.72916 54.68 0.5445 9 40.1675 0.6789 10 35.3886 4.3308 1.84666 23.78 0.6192 11 -38.7126 4.2334 *12 -26.0435 0.7255 1.69560 59.05 0.5435 *13 -685.6065 DD

[13] *14 18.6093 3.6202 1.59201 67.02 0.5359 *15 -181.1803 1.4363 16(Wed) ∞ 3.7048 17 24.4272 3.0853 1.49700 81.54 0.5375 18 -61.2261 0.8500 1.84666 23.78 0.6192 19 103.1729 2.1244 20 -80.5684 1.4898 1.98613 16.48 0.6656 21 -37.3368 0.8601 1.84666 23.78 0.6192 22 59.8906 DD

[22] *23 29.1319 3.9040 1.72903 54.04 0.5447 *24 -25.8804 3.0853 25 -30.8875 1.3502 1.95000 29.37 0.6002 26 26.8969 2.4044 1.94595 17.98 0.6546 27 159.8564 DD

[27] 28 -85.8638 2.6001 1.48071 85.29 0.5362 29 -39.2052 17.1613 30 ∞ 2.8500 1.54763 54.98 0.5525 31 ∞ 1.0155

[0387] [Table 26]

[0388] Example 9

[0389] Goodbye Middle TV Zr 1.0 2.4 7.1 f 18.49 44.79 130.71 Bf 20.02 20.02 20.02 FNo. 3.60 4.58 5.81 2ω[°] 80.4 35.2 12.6 DD[5] 1.6302 20.1361 41.3435 DD

[13] 18.3535 8.6593 0.9603 DD

[22] 4.0002 2.7494 2.0609 DD

[27] 3.9819 23.0788 47.6344

[0390] [Table 27]

[0391] Example 9

[0392]

[0393] [Example 10]

[0394] The structure and movement trajectory of the zoom lens of Example 10 are shown in FIG. Figure 20The zoom lens of Example 10 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0395] When zooming from the wide-angle position to the telephoto position, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. The focusing group consists of the single lens closest to the object, the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group includes the second M lens group GM2.

[0396] Regarding the zoom lens of Example 10, 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 21 middle.

[0397] [Table 28]

[0398] Example 10

[0399] Sn R D Yes etc. θgF 1 172.1092 1.4935 1.95675 33.02 0.5880 2 90.4449 6.1966 1.49837 81.40 0.5376 3 -320.1346 0.1000 4 92.5186 4.5505 1.55919 72.14 0.5409 5 1088.4412 DD[5] 6 198.7507 0.8077 1.90933 37.87 0.5756 7 23.7443 4.6397 8 -65.7758 0.7113 1.73447 55.76 0.5431 9 23.4591 0.0998 10 23.9613 4.4325 1.88221 21.15 0.6358 11 -190.4694 1.9090 12 -29.3329 0.6811 1.93816 34.92 0.5831 13 -60.4261 DD

[13] 14 36.2658 4.1469 1.70744 29.63 0.6048 15 -66.6877 3.8357 16(Wed) ∞ 1.5000 17 28.5397 4.8370 1.44022 90.25 0.5318 18 -26.5835 0.6402 1.99518 21.85 0.6362 19 114.4019 0.0998 20 26.8760 3.4325 1.49790 81.47 0.5376 21 -114.5468 DD

[21] *22 -78.2128 0.6399 1.54856 73.75 0.5403 *23 40.9592 DD

[23] *24 20.4328 5.8037 1.73723 55.48 0.5433 *25 -37.8155 1.1924 *26 8327.7815 0.6674 1.84999 34.90 0.5856 *27 17.1108 1.6040 28 36.7997 7.6937 1.82014 23.99 0.6196 29 -13.2621 0.6628 1.93317 35.43 0.5818 30 -339.4792 2.3308 31 -29.4882 0.6713 1.93067 35.69 0.5812 32 -88.6919 DD

[32]

[0400] [Table 29]

[0401] Example 10

[0402] Goodbye Middle TV Zr 1.0 3.4 15.7 f 17.82 60.59 279.76 Bf 12.00 42.68 49.69 FNo. 3.51 4.90 6.30 2ω[°] 85.2 25.8 5.6 DD[5] 0.6954 24.2224 85.6878 DD

[13] 36.0032 14.0044 0.6988 DD

[21] 1.1940 4.1012 6.4311 DD

[23] 16.7468 8.1905 7.1543 DD

[32] 12.0016 42.6813 49.6905

[0403] [Table 30]

[0404] Example 10

[0405]

[0406] [Example 11]

[0407] The structure and movement trajectory of the zoom lens of Example 11 are shown in FIG. Figure 22. The zoom lens of Example 11 includes, from the object side to the image side, an object side positive group GP, an object side negative group GN, an intermediate group GM, and a final group GE. The object side positive group GP includes one lens group having positive refractive power. The object side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, from the object side to the image side, three lens groups: a 1M-th lens group GM1 having positive refractive power, a 2M-th lens group GM2 having negative refractive power, and a 3M-th lens group GM3 having positive refractive power. The final group GE includes one lens group having negative refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0408] When zooming from the wide-angle position to the telephoto position, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. The focusing group consists of the single lens closest to the object, the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the image. The anti-vibration group includes the second M lens group GM2.

[0409] Regarding the zoom lens of Example 11, 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 23 middle.

[0410] [Table 31]

[0411] Example 11

[0412] Sn R D Yes etc. θgF 1 158.1289 1.5778 1.96687 31.99 0.5909 2 86.8636 6.7578 1.50204 80.84 0.5378 3 -382.1573 0.0998 4 84.5257 4.9360 1.54601 74.14 0.5402 5 806.2757 DD[5] 6 -695.0153 0.9102 1.76763 52.37 0.5473 7 22.9882 5.1063 8 -114.8877 0.7434 1.71747 56.85 0.5425 9 23.1796 0.0999 10 23.5954 4.0857 1.99707 23.29 0.6275 11 126.7586 2.1250 12 -47.4841 0.7059 1.81872 47.14 0.5560 13 -186.7701 DD

[13] 14 31.7917 3.4415 1.67500 31.79 0.5997 15 -105.8188 5.3672 16(Wed) ∞ 2.8339 17 26.4170 4.8340 1.43599 90.90 0.5313 18 -23.0540 0.6414 2.00001 24.69 0.6195 19 77.5930 0.1000 20 24.8294 3.6008 1.49647 81.69 0.5375 21 -77.1805 DD

[21] *22 -68.2576 0.6416 1.55699 72.47 0.5408 *23 37.0777 DD

[23] *24 21.2101 4.7248 1.74152 55.04 0.5436 *25 -30.5017 DD

[25] *26 238.9625 0.6417 1.76940 52.19 0.5475 *27 17.9749 8.8373 28 59.8409 6.3839 1.82444 23.78 0.6200 29 -15.0655 0.6669 1.92340 36.43 0.5792 30 -142.8340 0.7323 31 -50.8797 0.6736 2.00000 28.60 0.6012 32 2984.9416 DD

[32]

[0413] [Table 32]

[0414] Example 11

[0415] Goodbye Middle TV Zr 1.0 3.4 15.7 f 17.55 59.68 275.58 Bf 12.02 35.70 57.03 FNo. 3.51 4.89 6.30 2ω[°] 85.2 25.6 5.8 DD[5] 0.6973 33.2488 79.4333 DD

[13] 35.4244 14.0508 0.7007 DD

[21] 1.2010 2.2658 3.0200 DD

[23] 9.0199 3.5302 1.1948 DD

[25] 2.3939 2.7264 2.3940 DD

[32] 12.0170 35.6973 57.0325

[0416] [Table 33]

[0417] Example 11

[0418]

[0419] [Example 12]

[0420] The structure and movement trajectory of the zoom lens of Example 12 are shown in FIG. Figure 24The zoom lens of Example 12 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1M-th lens group GM1 having positive refractive power and a 2M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0421] When zooming from the wide-angle end to the telephoto end, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. This group consists of the second lens from the object side of the final group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0422] Regarding the zoom lens of Example 12, 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 25 middle.

[0423] [Table 34]

[0424] Example 12

[0425] Sn R D Yes etc. θgF 1 169.0991 1.6913 1.95375 32.32 0.5906 2 84.9976 7.5628 1.49700 81.55 0.5384 3 -454.0866 0.1000 4 87.1813 5.7152 1.59500 67.84 0.5432 5 2041.7799 DD[5] 6 -123259.4458 0.8732 1.80420 46.50 0.5573 7 23.6254 4.4955 8 -167.5043 0.7291 1.72903 54.04 0.5447 9 20.9433 0.1410 10 21.5689 4.4429 1.90680 21.40 0.6335 11 186.5685 1.8310 12 -46.7380 0.6896 1.77200 49.98 0.5548 13 -310.2450 DD

[13] 14 33.5110 3.1712 1.76182 26.53 0.6122 15 -93.6093 5.0419 16(Wed) ∞ 2.1037 17 26.7571 4.1898 1.43425 94.77 0.5321 18 -25.7873 0.6420 2.00178 19.32 0.6448 19 66.6632 0.0998 20 24.1944 3.3466 1.45860 90.17 0.5371 21 -83.3341 DD

[21] *22 -62.4039 0.6431 1.61996 63.93 0.5429 *23 38.9435 DD

[23] *24 21.5737 4.9262 1.80337 45.49 0.5593 *25 -34.2054 1.1936 *26 271.6831 0.6419 1.80420 46.50 0.5573 *27 19.6336 9.3046 28 56.6509 7.7511 1.82115 24.06 0.6237 29 -13.2742 0.6713 1.90068 37.12 0.5763 30 -71.0413 0.8573 31 -35.5879 0.6789 2.00100 29.12 0.5996 32 -6099.6231 DD

[32]

[0426] [Table 35]

[0427] Example 12

[0428] Goodbye Middle TV Zr 1.0 3.4 15.7 f 17.75 60.35 278.66 Bf 11.99 36.55 56.35 FNo. 3.50 4.89 6.30 2ω[°] 83.6 25.4 5.6 DD[5] 0.6949 33.1822 78.2663 DD

[13] 35.0956 14.6939 0.6938 DD

[21] 1.3112 2.2510 4.9990 DD

[23] 9.3903 4.0886 1.1990 DD

[32] 11.9914 36.5469 56.3541

[0429] [Table 36]

[0430] Example 12

[0431]

[0432] [Example 13]

[0433] The structure and movement trajectory of the zoom lens of Example 13 are shown in FIG. Figure 26The zoom lens of Example 13 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0434] When zooming from the wide-angle end to the telephoto end, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. This group consists of the second lens from the object side of the final group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0435] Regarding the zoom lens of Example 13, 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 27 middle.

[0436] [Table 37]

[0437] Example 13

[0438] Sn R D Yes etc. θgF 1 162.8581 1.5260 1.98441 30.16 0.5965 2 86.4039 6.2351 1.51500 78.87 0.5385 3 -417.4069 0.1002 4 84.8919 4.6358 1.59644 66.40 0.5429 5 744.2541 DD[5] 6 -544.9347 0.9096 1.74990 54.18 0.5446 7 23.9626 4.4899 8 -291.2788 0.7489 1.63355 60.98 0.5434 9 23.1529 0.1001 10 23.5734 3.3855 1.92224 18.89 0.6496 11 59.2148 2.4150 12 -60.8481 0.7039 1.73386 55.82 0.5430 13 -904.5000 DD

[13] 14 28.6350 3.7640 1.64474 33.95 0.5941 15 -105.0828 4.7461 16(Wed) ∞ 2.4294 17 26.3935 4.4815 1.43599 90.90 0.5313 18 -25.4163 0.6408 1.99310 23.84 0.6239 19 88.9692 0.1002 20 24.8693 3.5827 1.47126 85.53 0.5349 21 -73.8984 DD

[21] *22 -44.3957 0.6428 1.53730 75.47 0.5398 *23 33.3006 DD

[23] *24 21.3771 4.9944 1.72988 56.23 0.5427 *25 -34.1214 1.1957 *26 337.7282 0.6438 1.76093 48.61 0.5548 *27 20.8753 8.7103 28 49.4530 6.8371 1.78813 25.70 0.6157 29 -15.2092 0.6708 1.85144 43.80 0.5622 30 -96.2466 0.8857 31 -39.5660 0.6769 2.00001 26.31 0.6102 32 -2769.9276 DD

[32]

[0439] [Table 38]

[0440] Example 13

[0441] Goodbye Middle TV Zr 1.0 3.4 15.7 f 18.02 61.29 282.99 Bf 14.00 40.30 62.13 FNo. 3.51 4.89 6.30 2ω[°] 83.8 25.2 5.6 DD[5] 0.6949 31.3627 75.8092 DD

[13] 36.7248 14.9949 0.6994 DD

[21] 1.4700 2.9861 4.9562 DD

[23] 8.8726 4.2140 1.1963 DD

[32] 13.9964 40.2988 62.1276

[0442] [Table 39]

[0443] Example 13

[0444]

[0445] [Example 14]

[0446] The structure and movement trajectory of the zoom lens of Example 14 are shown in FIG. Figure 28The zoom lens of Example 14 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0447] When zooming from the wide-angle end to the telephoto end, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. This group consists of the second lens from the object side of the final group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0448] Regarding the zoom lens of Example 14, 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 29 middle.

[0449] [Table 40]

[0450] Example 14

[0451] Sn R D Yes etc. θgF 1 186.1876 1.4983 1.99905 26.95 0.6064 2 93.9015 5.7271 1.55046 73.47 0.5404 3 -460.3288 0.1001 4 93.9197 4.0726 1.72952 56.24 0.5427 5 460.9010 DD[5] 6 3548.5546 0.9620 1.80847 48.19 0.5540 7 23.4067 4.5848 8 577.7664 0.7794 1.73459 55.75 0.5431 9 21.6491 0.0998 10 21.9965 3.4985 1.96376 16.81 0.6643 11 44.9093 2.7827 12 -76.3544 0.7135 1.82754 46.24 0.5577 13 -221.6756 DD

[13] 14 25.3380 3.7724 1.61326 36.67 0.5870 15 -180.4135 4.8857 16(Wed) ∞ 1.5000 17 23.1199 4.6390 1.43644 90.83 0.5314 18 -29.2633 0.6405 2.00000 24.49 0.6206 19 100.5362 0.1001 20 24.6099 3.6524 1.49455 81.98 0.5373 21 -57.2343 DD

[21] *22 -36.5187 0.6430 1.55505 72.77 0.5407 *23 25.7320 DD

[23] *24 18.2501 4.3439 1.72856 56.29 0.5427 *25 -42.2736 1.1934 *26 -486.1921 0.6464 1.84999 43.63 0.5627 *27 20.2766 8.0917 28 48.9931 7.0331 1.84304 22.85 0.6272 29 -15.1421 0.6758 1.91930 36.85 0.5782 30 -94.3498 0.5240 31 -52.4668 0.6810 2.00001 17.84 0.6599 32 85753.1876 DD

[32]

[0452] [Table 41]

[0453] Example 14

[0454] Goodbye Middle TV Zr 1.0 3.6 17.7 f 16.45 58.95 290.57 Bf 14.00 42.75 60.72 FNo. 3.51 4.89 6.30 2ω[°] 88.8 26.2 5.4 DD[5] 0.6969 30.8204 79.5164 DD

[13] 40.9480 16.0154 0.6958 DD

[21] 1.3719 2.6532 4.9377 DD

[23] 7.1721 3.7213 1.1933 DD

[32] 13.9982 42.7516 60.7246

[0455] [Table 42]

[0456] Example 14

[0457]

[0458] [Example 15]

[0459] The structure and movement trajectory of the zoom lens of Example 15 are shown in FIG. Figure 30The zoom lens of Example 15 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1M-th lens group GM1 having positive refractive power and a 2M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0460] When zooming from the wide-angle position to the telephoto position, the object-side negative lens group GN is fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This group consists of the second lens from the object side of the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0461] Regarding the zoom lens of Example 15, basic lens data are shown in Table 43, 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 31 middle.

[0462] [Table 43]

[0463] Example 15

[0464] Sn R D Yes etc. θgF 1 157.4611 1.6865 2.00000 25.83 0.6131 2 63.8132 10.2409 1.50938 79.72 0.5382 3 -258.9094 0.0998 4 63.5555 6.9534 1.84045 44.92 0.5602 5 504.1819 DD[5] 6 929.0602 0.6997 1.97430 31.23 0.5932 7 25.5651 3.3850 8 -62.4969 0.6656 1.90547 38.27 0.5746 9 26.7993 0.1387 10 26.7801 3.5351 2.00001 15.00 0.6777 11 -221.1340 1.1856 12 -38.3116 0.6438 1.91917 36.87 0.5781 13 -303.3334 DD

[13] 14 34.8775 3.0582 1.74188 27.91 0.6095 15 -89.1638 1.5000 16(Wed) ∞ 5.9022 17 28.3202 4.8548 1.43600 67.00 0.5256 18 -21.1007 0.6288 2.00000 23.43 0.6267 19 68.8059 0.1001 20 25.8884 3.9769 1.43599 90.90 0.5313 21 -65.1843 DD

[21] *22 -185.4158 0.6539 1.58011 68.95 0.5420 *23 52.1725 DD

[23] *24 23.2819 6.0124 1.73003 56.22 0.5428 *25 -29.5932 1.1859 *26 61.6022 0.6538 1.79821 49.24 0.5519 *27 17.9068 11.1029 28 31.5345 6.8066 1.82125 23.94 0.6197 29 -18.6551 0.6704 1.92565 36.20 0.5798 30 52.7475 1.6164 31 -99.9242 0.6577 1.93842 34.90 0.5832 32 78.9199 DD

[32]

[0465] [Table 44]

[0466] Example 15

[0467] Goodbye Middle TV Zr 1.0 3.4 15.7 f 18.46 62.76 289.77 Bf 12.74 29.59 49.53 FNo. 3.50 4.89 6.30 2ω[°] 82.8 24.0 5.4 DD[5] 0.6895 28.0318 49.4338 DD

[13] 30.0359 17.0755 0.6830 DD

[21] 1.1823 2.6543 1.3873 DD

[23] 8.8238 3.4636 1.1826 DD

[32] 12.7373 29.5859 49.5265

[0468] [Table 45]

[0469] Example 15

[0470]

[0471] [Example 16]

[0472] The structure and movement trajectory of the zoom lens of Example 16 are shown in FIG. Figure 32The zoom lens of Example 16 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1stM-th lens group GM1 having positive refractive power and a 2ndM-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1stM-th lens group GM1.

[0473] When zooming from the wide-angle end to the telephoto end, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. This group consists of the second lens from the object side of the final group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group includes the second M lens group GM2.

[0474] Regarding the zoom lens of Example 16, basic lens data are shown in Table 46, specifications and variable surface spacing are shown in Table 47, aspheric coefficients are shown in Table 48, and various aberration diagrams are shown in Table 49. Figure 33 middle.

[0475] [Table 46]

[0476] Example 16

[0477] Sn R D Yes etc. θgF 1 196.3394 1.4909 1.93967 34.77 0.5835 2 91.1198 6.4369 1.49742 81.54 0.5376 3 -255.3036 0.0998 4 90.3977 4.6452 1.54529 74.25 0.5402 5 1666.9525 DD[5] 6 2093.3558 0.8602 1.82571 46.43 0.5574 7 26.5938 4.9090 8 -57.9315 0.7301 1.67733 58.83 0.5423 9 22.0298 0.0998 10 22.5867 5.5135 1.82731 23.63 0.6211 11 -72.6861 0.4117 12 -51.1802 0.6934 1.91165 37.64 0.5762 13 125.9832 DD

[13] 14 40.7562 2.8080 1.73166 28.42 0.6081 15 -74.3088 1.5142 16(Wed) ∞ 4.4318 17 36.8499 3.7520 1.43688 90.76 0.5314 18 -25.9418 0.6449 1.99999 22.50 0.6327 19 163.5947 0.1000 20 27.6570 2.9492 1.46856 85.94 0.5346 21 -129.2177 DD

[21] *22 -50.4992 0.6427 1.52605 77.18 0.5391 *23 40.1181 DD

[23] *24 31.1608 4.5740 1.48899 82.83 0.5367 *25 -37.9586 11.9827 *26 29.2121 3.7136 1.60775 64.63 0.5435 *27 -323.9715 1.1970 28 150.4329 5.6455 1.82786 23.61 0.6213 29 -17.1457 0.6772 1.93015 35.74 0.5810 30 220.3351 0.9181 31 -84.5417 0.6672 1.74086 55.11 0.5436 32 27.9871 DD

[32]

[0478] [Table 47]

[0479] Example 16

[0480] Goodbye Middle TV Zr 1.0 3.4 15.7 f 17.56 59.70 275.65 Bf 14.13 40.23 48.21 FNo. 3.50 4.90 6.30 2ω[°] 85.8 25.6 5.6 DD[5] 0.6988 31.7662 85.9301 DD

[13] 32.2261 13.6572 0.7025 DD

[21] 1.6726 1.7471 6.8900 DD

[23] 11.1968 4.6009 1.1964 DD

[32] 14.1311 40.2284 48.2115

[0481] [Table 48]

[0482] Example 16

[0483]

[0484] [Example 17]

[0485] The structure and movement trajectory of the zoom lens of Example 17 are shown in FIG. Figure 34The zoom lens of Example 17 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1M-th lens group GM1 having positive refractive power and a 2M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the 1M-th lens group GM1.

[0486] When zooming from the wide-angle end to the telephoto end, all lens groups move, altering the spacing between adjacent lens groups. A zoom lens consists of only one focusing group. The focusing group consists of the lens closest to the image side, the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group includes the second M lens group GM2.

[0487] Regarding the zoom lens of Example 17, basic lens data are shown in Table 49, specifications and variable surface spacing are shown in Table 50, aspheric coefficients are shown in Table 51, and various aberration diagrams are shown in Table 52. Figure 35 middle.

[0488] [Table 49]

[0489] Example 17

[0490] Sn R D Yes etc. θgF 1 156.0290 1.4739 1.97373 31.29 0.5931 2 79.7152 6.5935 1.52359 77.56 0.5390 3 -318.5220 0.0998 4 79.4803 4.6846 1.60063 65.74 0.5431 5 688.7552 DD[5] 6 -571.6433 0.8764 1.80707 48.34 0.5537 7 25.3348 4.5656 8 -94.0722 0.7309 1.73317 55.90 0.5430 9 32.9871 0.0998 10 31.5825 2.8196 1.95117 17.44 0.6597 11 100.9861 1.9398 12 -57.1222 0.7000 1.50047 81.08 0.5377 13 267.8130 DD

[13] 14 31.4193 3.5081 1.67765 33.55 0.5944 15 -72.4326 1.5000 16(Wed) ∞ 1.5000 17 30.1001 4.2751 1.44235 89.06 0.5315 18 -28.1752 0.6412 1.99999 26.37 0.6099 19 75.9564 0.1002 20 26.5267 3.8526 1.48613 83.26 0.5364 21 -53.2562 DD

[21] *22 -27.0529 0.6391 1.45783 87.57 0.5335 *23 29.1682 DD

[23] *24 22.2635 4.8559 1.71234 57.10 0.5424 *25 -36.8329 0.0998 26 269.5773 0.6625 1.82638 23.68 0.6207 27 22.7420 1.1820 28 44.3352 5.8643 1.83255 24.64 0.6185 29 -16.6882 0.6593 1.92169 32.09 0.5918 30 -304.5946 1.1959 *31 -42.9014 0.8113 1.43599 67.48 0.5252 *32 -946.6194 DD

[32]

[0491] [Table 50]

[0492] Example 17

[0493] Goodbye Middle TV Zr 1.0 3.4 15.7 f 17.55 59.68 275.57 Bf 27.04 58.53 88.41 FNo. 3.51 4.90 6.29 2ω[°] 87.0 26.0 5.8 DD[5] 0.6924 26.9191 66.8226 DD

[13] 36.0904 13.8642 0.6973 DD

[21] 1.8763 2.1213 2.0356 DD

[23] 10.3798 4.6380 1.1904 DD

[32] 27.0404 58.5257 88.4096

[0494] [Table 51]

[0495] Example 17

[0496] Sn 22 23 24 25 KA -4.2415742E+00 -2.5354273E+00 -1.1255368E+00 1.3907713E+00 A4 -4.8709802E-06 1.6663465E-05 3.8590405E-06 2.5482827E-05 A6 1.4921187E-08 -6.3561018E-08 8.0538629E-08 3.8263900E-08 A8 5.6742705E-10 6.4983613E-10 -1.0722884E-09 -1.0104811E-09 A10 3.0631696E-13 2.8711255E-12 8.0978404E-12 8.8210750E-12 A12 -2.0430458E-14 -3.4113154E-14 1.4330851E-15 -1.2860851E-15

[0497] Sn 31 32 KA 8.4870651E-01 4.9999996E+00 A3 1.4872458E-20 0.0000000E+00 A4 3.1177033E-04 3.0937167E-04 A5 3.6539332E-07 5.6898227E-07 A6 -4.1637627E-06 -4.0337745E-06 A7 2.6869062E-08 3.3886338E-08 A8 3.7824448E-08 3.5046078E-08 A9 -3.6214814E-10 -4.2625201E-10 A10 -2.1806265E-10 -1.9290530E-10 A11 1.7947265E-12 2.0575181E-12 A12 7.5194685E-13 6.3985141E-13 A13 -4.0346138E-15 -4.5660065E-15 A14 -1.4014481E-15 -1.1570675E-15 A15 3.4456621E-18 3.8720967E-18 A16 1.0802811E-18 8.7149147E-19

[0498] [Example 18]

[0499] The structure and movement trajectory of the zoom lens of Example 18 are shown in FIG. Figure 36The zoom lens of Example 18 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0500] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. This zoom lens consists of only one focusing group. This group comprises the two lenses of the final lens group GE, the fourth and fifth lenses from the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group consists of the three lenses of the object-side negative lens group GN, the second, fourth lenses from the object side.

[0501] Regarding the zoom lens of Example 18, 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. Figure 37 middle.

[0502] [Table 52]

[0503] Example 18

[0504] Sn R D Yes etc. θgF 1 91.6957 1.9555 1.90366 31.34 0.5964 2 64.2076 7.2945 1.43700 95.10 0.5336 3 -1088.5197 0.2615 4 60.1849 5.9368 1.43700 95.10 0.5336 5 374.9938 DD[5] 6 2347.2205 2.3572 1.43700 95.10 0.5336 7 -141.1219 2.9789 8 1055.0108 1.0217 1.59282 68.62 0.5441 9 18.4933 2.6811 1.85896 22.73 0.6284 10 25.5750 4.4531 11 -47.4638 0.7569 1.75500 52.32 0.5476 12 104.5048 DD

[12] 13 95.2305 2.6297 1.95906 17.47 0.6599 14 -165.4545 0.1000 15 61.2213 0.9579 1.95906 17.47 0.6599 16 24.8625 6.4347 1.58913 61.13 0.5407 17 -78.3839 DD

[17] 18 -54.4183 0.8974 1.53172 48.84 0.5631 19 27.4942 2.5839 2.00330 28.27 0.5980 20 51.2504 DD

[20] 21(Wed) ∞ 1.3000 *22 20.9994 5.6178 1.49710 81.56 0.5385 *23 -116.2899 0.0998 24 37.6131 0.8576 1.91082 35.25 0.5822 25 15.5016 7.0261 1.59282 68.62 0.5441 26 -57.3246 2.4998 27 344.2464 2.1940 1.64769 33.79 0.5939 28 -46.0967 0.6626 1.69100 54.82 0.5450 29 19.9368 10.1869 30 31.3550 5.0367 1.62004 36.26 0.5880 31 -28.9296 0.0999 *32 -68.2660 1.0740 1.69350 53.18 0.5483 *33 22.3346 26.9151 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 1.0038

[0505] [Table 53]

[0506] Example 18

[0507] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.29 89.98 132.62 Bf 29.80 29.80 29.80 FNo. 2.89 2.89 2.89 2ω[°] 29.8 16.8 11.4 DD[5] 2.8336 26.6850 36.9073 DD

[12] 13.1757 8.7537 2.9856 DD

[17] 4.2892 5.4649 10.9755 DD

[20] 34.5591 13.9540 3.9893

[0508] [Table 54]

[0509] Example 18

[0510] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 -1.0461880E-20 6.2771277E-20 2.3414365E-21 3.0458794E-20 A4 -6.3923819E-06 2.0143462E-05 1.8891252E-04 2.1904540E-04 A5 -9.6741365E-07 -2.6650607E-06 1.8665767E-05 2.2676218E-05 A6 3.4858404E-07 6.9990946E-07 -9.0938163E-06 -9.9379689E-06 A7 -4.5462534E-09 -4.4477067E-09 -1.1614746E-06 -1.1677591E-06 A8 -2.0351380E-08 -3.0268008E-08 3.7519321E-07 3.9653743E-07 A9 2.7357946E-09 3.2038025E-09 3.7194221E-08 3.4964417E-08 A10 3.1480286E-10 5.6804975E-10 -1.1732712E-08 -1.1744927E-08 A11 -7.5049508E-11 -1.0237627E-10 -6.6855933E-10 -6.5944712E-10 A12 -1.2281208E-12 -3.9626804E-12 2.3835705E-10 2.3512290E-10 A13 9.3374796E-13 1.4321978E-12 7.0045031E-12 7.9012572E-12 A14 -1.6724425E-14 -9.1164217E-15 -3.0507332E-12 -3.0679892E-12 A15 -6.1927862E-15 -1.0445213E-14 -4.3373486E-14 -5.8290704E-14 A16 2.1689998E-16 2.9305863E-16 2.4034133E-14 2.4943533E-14 A17 2.1229175E-17 3.8998884E-17 1.5490882E-16 2.3994843E-16 A18 -9.5085563E-19 -1.5774185E-18 -1.0763980E-16 -1.1422189E-16 A19 -2.9631210E-20 -5.9012641E-20 -2.6638477E-19 -4.1944250E-19 A20 1.5007209E-21 2.8420132E-21 2.1130842E-19 2.2350639E-19

[0511] [Example 19]

[0512] The structure and movement trajectory of the zoom lens of Example 19 are shown in FIG. Figure 38The zoom lens of Example 19 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0513] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. This zoom lens consists of only one focusing group. This group comprises the two lenses of the final lens group GE, the fourth and fifth lenses from the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group consists of the three lenses of the object-side negative lens group GN, the second, fourth lenses from the object side.

[0514] Regarding the zoom lens of Example 19, basic lens data are shown in Table 55, 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. Figure 39 middle.

[0515] [Table 55]

[0516] Example 19

[0517] Sn R D Yes etc. θgF 1 85.2488 1.9496 1.90366 31.34 0.5964 2 61.5680 7.5625 1.43700 95.10 0.5336 3 -1102.4691 0.2615 4 59.3816 5.9238 1.43700 95.10 0.5336 5 338.9463 DD[5] 6 -709.3084 2.1694 1.43700 95.10 0.5336 7 -130.1013 2.7056 8 357.3452 1.0161 1.59282 68.62 0.5441 9 17.8654 2.6438 1.85896 22.73 0.6284 10 23.8847 4.9065 11 -41.7686 0.7536 1.77250 49.60 0.5521 12 184.2881 DD

[12] 13 110.5347 2.6123 1.95906 17.47 0.6599 14 -135.4228 0.1000 15 59.8947 0.9533 1.95906 17.47 0.6599 16 24.2581 6.6816 1.60311 60.64 0.5415 17 -71.0964 DD

[17] 18 -52.0067 0.8921 1.54072 47.23 0.5651 19 25.5584 2.7064 2.00069 25.46 0.6136 20 47.1663 DD

[20] 21(Wed) ∞ 1.3000 *22 21.8230 5.8300 1.49710 81.56 0.5385 *23 -84.5352 0.0998 24 52.2545 0.8505 1.88300 39.22 0.5729 25 15.6947 6.4987 1.59282 68.62 0.5441 26 -93.6867 2.4999 27 130.2762 3.0212 1.51742 52.43 0.5565 28 -28.7105 0.6660 1.56883 56.36 0.5489 29 25.4532 13.6870 30 38.9255 4.4096 1.59270 35.31 0.5934 31 -32.3880 0.1000 *32 -84.1667 1.0676 1.61881 63.85 0.5418 *33 23.2375 25.4621 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 0.9996

[0518] [Table 56]

[0519] Example 19

[0520] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.30 89.99 132.63 Bf 28.34 28.34 28.34 FNo. 2.89 2.89 2.89 2ω[°] 29.4 16.4 11.2 DD[5] 3.1489 25.6848 35.2070 DD

[12] 14.6182 9.3901 2.9829 DD

[17] 4.0632 5.6572 10.7284 DD

[20] 31.0713 12.1694 3.9833

[0521] [Table 57]

[0522] Example 19

[0523] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 1.5692819E-20 -4.1847518E-20 3.7462984E-20 -4.5688190E-20 A4 -6.9866395E-06 1.4410750E-05 2.3616448E-04 2.6432022E-04 A5 5.4016818E-07 -2.2585509E-06 2.8269927E-05 3.8595172E-05 A6 -9.6338946E-08 5.5849457E-07 -1.0339119E-05 -1.2367415E-05 A7 2.2264375E-08 1.5905340E-08 -1.4830667E-06 -1.5303119E-06 A8 -9.6824778E-09 -2.8735475E-08 3.7842441E-07 4.3991979E-07 A9 1.1971030E-09 2.4898394E-09 4.5548135E-08 4.1904663E-08 A10 1.9426192E-10 5.7742514E-10 -1.0853338E-08 -1.1572767E-08 A11 -4.7046720E-11 -9.1159406E-11 -8.1902152E-10 -7.9160134E-10 A12 -4.9805084E-13 -4.2678115E-12 2.0530042E-10 2.1228049E-10 A13 6.5384918E-13 1.3249571E-12 8.6775584E-12 9.8179718E-12 A14 -1.8927065E-14 -6.9131692E-15 -2.4307723E-12 -2.5924136E-12 A15 -4.5538447E-15 -9.8125643E-15 -5.3806805E-14 -7.4912728E-14 A16 2.2012469E-16 2.9104896E-16 1.7440817E-14 1.9849400E-14 A17 1.5953108E-17 3.6897661E-17 1.8614128E-16 3.1533694E-16 A18 -9.6288025E-19 -1.6202240E-18 -7.0065506E-17 -8.5398225E-17 A19 -2.2403729E-20 -5.6023193E-20 -2.9502806E-19 -5.5746008E-19 A20 1.5465451E-21 2.9866825E-21 1.2245072E-19 1.5623101E-19

[0524] [Example 20]

[0525] The structure and movement trajectory of the zoom lens of Example 20 are shown in FIG. Figure 40The zoom lens of Example 20 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0526] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. This zoom lens consists of only one focusing group. This group comprises the two lenses of the final lens group GE, the fourth and fifth lenses from the object side. When focusing from an object at infinity to a close object, the focusing group moves toward the image side. The anti-vibration group consists of the three lenses of the object-side negative lens group GN, the second, fourth lenses from the object side.

[0527] Regarding the zoom lens of Example 20, 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. Figure 41 middle.

[0528] [Table 58]

[0529] Example 20

[0530] Sn R D Yes etc. θgF 1 94.3082 1.9530 1.90525 35.04 0.5849 2 62.9352 7.0389 1.43700 95.10 0.5336 3 6417.6747 0.2615 4 60.4175 6.2450 1.43700 95.10 0.5336 5 616.2513 DD[5] 6 266.2525 2.7470 1.43700 95.10 0.5336 7 -156.5361 3.1286 8 2552.1355 1.0201 1.59282 68.62 0.5441 9 19.1412 2.3293 1.89286 20.36 0.6394 10 24.7393 4.8845 11 -39.5141 0.7552 1.72916 54.68 0.5445 12 309.8171 DD

[12] 13 138.3796 2.4208 1.95906 17.47 0.6599 14 -139.5193 0.1000 15 62.2412 0.9533 1.95906 17.47 0.6599 16 26.0946 6.5983 1.55200 70.70 0.5422 17 -59.4537 DD

[17] 18 -56.1172 0.8964 1.53996 59.46 0.5442 19 26.9865 2.7940 1.95375 32.32 0.5901 20 56.1491 DD

[20] 21(Wed) ∞ 1.3000 *22 20.9994 5.5351 1.49710 81.56 0.5385 *23 -112.2811 0.1824 24 34.4622 0.8627 1.91082 35.25 0.5822 25 15.3933 7.4920 1.59282 68.62 0.5441 26 -46.9358 2.5000 27 -2450.7971 1.7947 1.85896 22.73 0.6284 28 -60.0013 0.6632 1.77250 49.60 0.5521 29 18.4553 9.5659 30 33.5255 5.1205 1.59551 39.24 0.5804 31 -26.3839 0.0998 *32 -106.7695 1.0710 1.72903 54.04 0.5447 *33 20.3936 25.6307 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 1.0024

[0531] [Table 59]

[0532] Example 20

[0533] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.67 90.65 133.60 Bf 28.51 28.51 28.51 FNo. 2.89 2.89 2.89 2ω[°] 29.2 16.4 11.2 DD[5] 2.1821 28.2119 39.6839 DD

[12] 14.9282 9.7570 2.9800 DD

[17] 4.0328 5.0116 9.2353 DD

[20] 34.7519 12.9144 3.9958

[0534] [Table 60]

[0535] Example 20

[0536] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 1.0461880E-20 0.0000000E+00 -2.3414365E-21 -1.5229397E-20 A4 -6.8175312E-06 2.2758731E-05 1.4623895E-04 1.7331639E-04 A5 -7.9719360E-07 -1.5170455E-06 1.1084876E-05 1.7825753E-05 A6 2.5777556E-07 3.6642990E-07 -6.0202525E-06 -7.5378131E-06 A7 8.5037259E-09 1.3301461E-08 -8.0583141E-07 -8.0351102E-07 A8 -1.8630043E-08 -2.2867582E-08 2.2747527E-07 2.6856593E-07 A9 2.1875259E-09 2.3816459E-09 2.7816156E-08 2.3906538E-08 A10 3.1314037E-10 4.6813719E-10 -7.3109577E-09 -7.5130144E-09 A11 -6.5659723E-11 -8.8892018E-11 -5.0964260E-10 -4.8836625E-10 A12 -1.5019723E-12 -2.9621115E-12 1.5186137E-10 1.4890521E-10 A13 8.4068602E-13 1.3074225E-12 5.1361341E-12 6.4636650E-12 A14 -1.2855058E-14 -1.6944446E-14 -1.9278486E-12 -1.9513012E-12 A15 -5.6370473E-15 -9.7659258E-15 -2.8313651E-14 -5.1938068E-14 A16 1.9130320E-16 3.3805429E-16 1.4692878E-14 1.5867895E-14 A17 1.9383388E-17 3.6961877E-17 8.1497393E-17 2.2763823E-16 A18 -8.6489473E-19 -1.7382134E-18 -6.2802099E-17 -7.1984495E-17 A19 -2.7017375E-20 -5.6406256E-20 -1.0825133E-19 -4.1526186E-19 A20 1.3799228E-21 3.0953067E-21 1.1754840E-19 1.3826886E-19

[0537] [Example 21]

[0538] The structure and movement trajectory of the zoom lens of Example 21 are shown in FIG. Figure 42The zoom lens of Example 21 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0539] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. This zoom lens consists of only one focusing group. This group comprises the third lens element, the fifth through seventh lenses from the object side, of the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group comprises the third lens element, the second through fourth lenses from the object side, of the object-side negative lens group GN.

[0540] Regarding the zoom lens of Example 21, basic lens data are shown in Table 61, 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. Figure 43 middle.

[0541] [Table 61]

[0542] Example 21

[0543] Sn R D Yes etc. θgF 1 115.4774 1.9599 1.91082 35.25 0.5822 2 73.9315 7.8128 1.43700 95.10 0.5336 3 -287.7150 0.2615 4 67.6182 5.7510 1.43700 95.10 0.5336 5 781.3473 DD[5] 6 209.1069 3.4305 1.43700 95.10 0.5336 7 -115.1173 2.7084 8 1580.4117 1.0238 1.59282 68.62 0.5441 9 20.9514 2.0829 1.89286 20.36 0.6394 10 26.5077 5.0020 11 -33.5574 0.7617 1.75500 52.32 0.5476 12 -1630.9951 DD

[12] 13 419.1666 2.7644 1.88300 39.22 0.5729 14 -64.8143 0.1000 15 40.6769 0.9587 1.95906 17.47 0.6599 16 17.7928 5.8978 1.76385 48.49 0.5590 17 57.0789 DD

[17] 18 -196.2989 0.9009 1.74400 44.79 0.5656 19 22.9567 3.9084 1.95906 17.47 0.6599 20 80.0805 DD

[20] 21(Wed) ∞ 1.3000 *22 19.1551 6.7866 1.49710 81.56 0.5385 *23 -410.3545 0.0998 24 199.8956 2.0000 1.95906 17.47 0.6599 25 904.4046 0.1000 26 31.0117 0.8502 1.80610 40.93 0.5702 27 12.6534 4.4696 1.55032 75.50 0.5400 28 20.0000 14.5914 29 -321.0258 3.0000 1.59282 68.62 0.5441 30 -29.2585 1.0000 1.95906 17.47 0.6599 31 -48.7282 0.1000 32 26.2236 3.0000 1.74950 35.33 0.5819 33 58.4042 2.4965 *34 -38.8146 1.0759 1.49710 81.56 0.5385 *35 122.6994 30.4503 36 ∞ 2.8500 1.51633 64.14 0.5353 37 ∞ 1.0068

[0544] [Table 62]

[0545] Example 21

[0546] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.63 90.59 133.52 Bf 33.34 33.34 33.34 FNo. 2.88 2.89 2.89 2ω[°] 30.0 16.8 11.4 DD[5] 1.9312 27.0737 39.0453 DD

[12] 18.6801 12.4174 2.9713 DD

[17] 4.3124 4.0862 5.5029 DD

[20] 26.6097 7.9562 4.0138

[0547] [Table 63]

[0548] Example 21

[0549] Sn 22 23 34 35 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 1.0461880E-20 -8.3695036E-20 -3.7462984E-20 2.1321155E-19 A4 -1.6355264E-05 1.0679141E-05 5.9157101E-04 5.8170552E-04 A5 3.5924758E-06 -7.2080315E-06 3.8237457E-05 5.9111845E-05 A6 -1.2802104E-06 2.0763511E-06 -2.2306320E-05 -2.8249260E-05 A7 1.5702692E-07 -1.0568281E-07 2.5184431E-07 1.1729706E-06 A8 1.4372541E-08 -6.1269225E-08 5.9795189E-07 6.5292706E-07 A9 -5.6346297E-09 8.4829105E-09 -4.8896321E-08 -9.2883430E-08 A10 1.3355799E-10 7.8592262E-10 -1.0105034E-08 -6.0404677E-09 A11 8.9387020E-11 -1.8917843E-10 1.5131733E-09 2.1194259E-09 A12 -5.6326438E-12 -2.9304893E-12 8.7455087E-11 -3.3581054E-11 A13 -8.3569439E-13 2.1380230E-12 -2.3952494E-11 -2.5385310E-11 A14 7.1315234E-14 -3.3404243E-14 -4.6182435E-14 1.4049808E-12 A15 4.7185491E-15 -1.3449425E-14 2.1282260E-13 1.7340890E-13 A16 -4.7182758E-16 4.3005011E-16 -5.9973832E-15 -1.4794190E-14 A17 -1.5045136E-17 4.5237652E-17 -1.0038515E-15 -6.4304097E-16 A18 1.6497073E-18 -1.8925378E-18 4.7683331E-17 7.4329344E-17 A19 2.0892303E-20 -6.3849222E-20 1.9514271E-18 1.0093186E-18 A20 -2.4225872E-21 3.0794596E-21 -1.1988799E-19 -1.5356526E-19

[0550] [Example 22]

[0551] The structure and movement trajectory of the zoom lens of Example 22 are shown in FIG. Figure 44The zoom lens of Example 22 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0552] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. This zoom lens consists of only one focusing group. This group comprises the fourth through sixth lenses from the object side of the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group comprises the second through fourth lenses from the object side of the negative lens group GN.

[0553] Regarding the zoom lens of Example 22, basic lens data are shown in Table 64, specifications and variable surface spacing are shown in Table 65, aspheric coefficients are shown in Table 66, and various aberration diagrams are shown in Table 67. Figure 45 middle.

[0554] [Table 64]

[0555] Example 22

[0556] Sn R D Yes etc. θgF 1 96.1895 1.9595 1.91082 35.25 0.5822 2 66.1029 7.0737 1.43700 95.10 0.5336 3 -1247.8682 0.2615 4 62.8231 6.6281 1.43700 95.10 0.5336 5 712.7977 DD[5] 6 134.6993 4.5380 1.43700 95.10 0.5336 7 -152.9718 2.8840 8 536.0913 1.0212 1.59282 68.62 0.5441 9 22.5636 1.7513 1.95906 17.47 0.6599 10 26.7118 4.7469 11 -37.2885 0.7581 1.72916 54.68 0.5445 12 145.1723 DD

[12] 13 -1371.1758 2.7787 1.88300 40.80 0.5656 14 -53.7339 0.1000 15 40.3243 0.9615 1.95906 17.47 0.6599 16 18.5790 7.2450 1.75500 52.32 0.5476 17 50.2979 DD

[17] 18 -65.0150 0.8994 1.60311 60.64 0.5415 19 29.4898 3.2038 1.95906 17.47 0.6599 20 107.7403 DD

[20] 21(Wed) ∞ 1.3000 *22 20.6921 7.9935 1.49710 81.56 0.5385 *23 -64.4004 0.2000 24 31.7557 0.8454 1.69930 51.11 0.5552 25 12.4450 4.7276 1.55032 75.50 0.5400 26 19.9999 16.2410 27 -46.5074 1.5000 1.95906 17.47 0.6599 28 -64.2844 0.1000 29 33.8540 5.5000 1.59282 68.62 0.5441 30 -19.0791 1.0000 1.70300 52.38 0.5507 31 -55.4777 1.4944 *32 -198.4984 1.0795 1.49710 81.56 0.5385 *33 36.4977 29.1184 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 3.6283

[0557] [Table 65]

[0558] Example 22

[0559] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.05 89.54 131.97 Bf 32.11 32.11 32.11 FNo. 2.88 2.89 2.88 2ω[°] 30.2 17.0 11.6 DD[5] 2.6449 25.7357 37.2668 DD

[12] 14.2864 10.9283 2.9634 DD

[17] 4.4383 4.2714 6.0782 DD

[20] 28.9489 9.3832 4.0101

[0560] [Table 66]

[0561] Example 22

[0562] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 4.5770723E-21 4.1847518E-20 2.4350940E-19 -3.0458794E-20 A4 -1.5834129E-05 1.4481484E-05 3.5609148E-04 3.5997397E-04 A5 5.3463455E-06 -4.5375524E-06 5.8896778E-05 8.0146588E-05 A6 -1.9669931E-06 1.1645259E-06 -1.7465587E-05 -2.4820824E-05 A7 2.7163716E-07 -3.0062657E-08 -1.3837000E-06 1.5706400E-08 A8 1.4484893E-08 -3.7564263E-08 6.4716510E-07 6.5025265E-07 A9 -8.0660594E-09 4.2347142E-09 2.7858931E-09 -5.5329808E-08 A10 3.9398424E-10 5.1537170E-10 -1.5440338E-08 -7.5808584E-09 A11 9.5763821E-11 -9.9847082E-11 6.7488356E-10 1.3623930E-09 A12 -9.1532083E-12 -2.5091057E-12 2.1498567E-10 6.6897509E-12 A13 -5.7964518E-13 1.1304433E-12 -1.6940854E-11 -1.5950664E-11 A14 8.4323923E-14 -1.1273661E-14 -1.5680892E-12 9.0420372E-13 A15 1.6712353E-15 -7.0439216E-15 1.8860540E-13 1.0294029E-13 A16 -4.0801736E-16 1.9455680E-16 3.8047570E-15 -1.1521590E-14 A17 -1.4101711E-18 2.3610797E-17 -1.0241395E-15 -3.5422276E-16 A18 1.0337666E-18 -9.0034820E-19 1.5860603E-17 6.4117163E-17 A19 -1.4003866E-21 -3.3633417E-20 2.1974894E-18 5.1008467E-19 A20 -1.1141920E-21 1.5148687E-21 -8.0681071E-20 -1.4317068E-19

[0563] [Example 23]

[0564] The structure and movement trajectory of the zoom lens of Example 23 are shown in FIG. Figure 46The zoom lens of Example 23 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0565] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. This zoom lens consists of only one focusing group. This group comprises the third lens element, the fifth through seventh lenses from the object side, of the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group comprises the third lens element, the second through fourth lenses from the object side, of the object-side negative lens group GN.

[0566] Regarding the zoom lens of Example 23, 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. Figure 47 middle.

[0567] [Table 67]

[0568] Example 23

[0569] Sn R D Yes etc. θgF 1 111.6729 1.9593 1.91082 35.25 0.5822 2 71.5163 7.4328 1.43700 95.10 0.5336 3 -323.3647 0.2615 4 66.3495 5.9548 1.43700 95.10 0.5336 5 1154.9484 DD[5] 6 228.4770 3.3461 1.43700 95.10 0.5336 7 -116.5523 2.7277 8 1683.1553 1.0230 1.59282 68.62 0.5441 9 22.1753 1.9325 1.92286 18.90 0.6496 10 27.5153 4.7773 11 -35.2258 0.7608 1.75500 52.32 0.5476 12 615.3319 DD

[12] 13 172.3992 2.8252 1.88300 40.80 0.5656 14 -78.4819 0.1000 15 39.6968 0.9584 1.95906 17.47 0.6599 16 18.4975 7.2492 1.72916 54.67 0.5453 17 49.4207 DD

[17] 18 -198.8249 0.9014 1.74400 44.79 0.5656 19 23.8907 3.8583 1.95906 17.47 0.6599 20 91.6373 DD

[20] 21(Wed) ∞ 1.3000 *22 19.8770 6.7092 1.49710 81.56 0.5385 *23 -7389.3771 0.0998 24 594.6670 2.0000 1.95906 17.47 0.6599 25 -376.6232 0.1000 26 28.9176 0.8506 1.80610 40.93 0.5702 27 12.9177 4.1758 1.55032 75.50 0.5400 28 19.9999 12.7441 29 -133.7595 3.0000 1.59282 68.62 0.5441 30 -26.3664 1.0000 1.95906 17.47 0.6599 31 -41.8091 0.1000 32 25.4121 3.0000 1.74400 44.79 0.5656 33 71.4235 2.4923 *34 -35.0436 1.0759 1.49710 81.56 0.5385 *35 91.6419 32.9717 36 ∞ 2.8500 1.51633 64.14 0.5353 37 ∞ 1.0067

[0570] [Table 68]

[0571] Example 23

[0572] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.69 90.70 133.68 Bf 35.86 35.86 35.86 FNo. 2.88 2.89 2.88 2ω[°] 30.2 16.8 11.4 DD[5] 1.9301 26.3721 38.1023 DD

[12] 18.9509 12.6928 2.9664 DD

[17] 4.5703 4.0758 5.4586 DD

[20] 25.0938 7.4044 4.0178

[0573] [Table 69]

[0574] Example 23

[0575] Sn 22 23 34 35 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 -5.2309398E-20 8.3695036E-20 4.4955581E-19 3.0458794E-19 A4 -1.6585238E-05 1.0402752E-05 6.8026797E-04 6.6767551E-04 A5 4.9516033E-06 -6.3116604E-06 2.4736283E-05 4.8838814E-05 A6 -1.6177979E-06 1.8338722E-06 -2.4844952E-05 -3.1946484E-05 A7 1.5356389E-07 -1.0559057E-07 1.1594034E-06 2.1592376E-06 A8 2.7788153E-08 -5.2043591E-08 5.8433503E-07 6.8835801E-07 A9 -6.6735990E-09 7.6778254E-09 -8.1829559E-08 -1.3377722E-07 A10 -1.0376256E-10 6.4397142E-10 -7.3190818E-09 -4.2540603E-09 A11 1.1953440E-10 -1.7023964E-10 2.2098596E-09 3.0378521E-09 A12 -3.5637837E-12 -1.8239833E-12 7.5658455E-12 -1.0104565E-10 A13 -1.2300569E-12 1.9397019E-12 -3.2855276E-11 -3.7425186E-11 A14 6.4765759E-14 -3.8276948E-14 1.1168137E-12 2.4486683E-12 A15 7.4805475E-15 -1.2345628E-14 2.8062293E-13 2.6565638E-13 A16 -4.9765582E-16 4.4437170E-16 -1.5539514E-14 -2.3317805E-14 A17 -2.5094568E-17 4.2021255E-17 -1.2871550E-15 -1.0262862E-15 A18 1.8996551E-18 -1.9266349E-18 8.9703220E-17 1.1028415E-16 A19 3.5832547E-20 -5.9917345E-20 2.4508594E-18 1.6766219E-18 A20 -2.9439450E-21 3.1279147E-21 -1.9734155E-19 -2.1523092E-19

[0576] [Example 24]

[0577] The structure and movement trajectory of the zoom lens of Example 24 are shown in FIG. Figure 48The zoom lens of Example 24 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0578] When zooming from the wide-angle position to the telephoto position, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by varying the spacing between them and adjacent lens groups. A zoom lens consists of only one focusing group. This group comprises the first through third lenses from the image side of the final lens group GE. When focusing from an object at infinity to a close object, the focusing group moves toward the object. The anti-vibration group comprises the second through fourth lenses from the object side of the negative lens group GN.

[0579] Regarding the zoom lens of Example 24, basic lens data are shown in Table 70, 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. Figure 49 middle.

[0580] [Table 70]

[0581] Example 24

[0582] Sn R D Yes etc. θgF 1 73.2013 1.9460 1.91082 35.25 0.5822 2 56.7115 7.7773 1.43700 95.10 0.5336 3 7847.0026 0.2615 4 75.1784 4.9969 1.43700 95.10 0.5336 5 534.2565 DD[5] 6 141.7379 3.6283 1.43700 95.10 0.5336 7 -161.8123 2.9230 8 1120.0000 1.0503 1.59282 68.62 0.5441 9 30.1161 3.0000 1.95906 17.47 0.6599 10 32.1500 3.9395 11 -43.5816 0.7479 1.77250 49.60 0.5521 12 82.8510 DD

[12] 13 502.0206 2.8053 1.81600 46.62 0.5568 14 -60.9855 0.1000 15 49.9530 0.9534 1.95906 17.47 0.6599 16 21.0950 4.0821 1.83400 37.16 0.5776 17 46.4032 DD

[17] 18 -53.5867 0.8861 1.55200 70.70 0.5422 19 41.3107 2.8829 1.95906 17.47 0.6599 20 453.4546 DD

[20] 21(Wed) ∞ 1.3000 *22 20.1445 6.3498 1.49710 81.56 0.5385 *23 -917.2125 0.0998 24 45.3372 3.0000 1.95906 17.47 0.6599 25 60.7784 0.1000 26 42.0542 0.8440 1.73800 32.33 0.5900 27 14.3228 3.1982 1.49700 81.61 0.5389 28 20.6819 23.7737 *29 23.7331 3.9601 1.49700 81.61 0.5389 *30 79.3455 0.3000 31 46.6656 3.5000 1.69680 55.53 0.5434 32 -2392.7266 0.1000 33 54.9642 0.8000 1.72047 34.71 0.5835 34 21.8402 38.5126 35 ∞ 2.8500 1.51633 64.14 0.5353 36 ∞ 1.0061

[0583] [Table 71]

[0584] Example 24

[0585] Goodbye Middle TV Zr 1.0 1.8 2.6 f 48.81 87.33 128.70 Bf 41.40 41.40 41.40 FNo. 2.88 2.88 2.88 2ω[°] 33.0 18.4 12.4 DD[5] 1.5587 24.3841 36.1925 DD

[12] 9.2270 9.2839 2.9711 DD

[17] 5.1655 4.1803 6.9939 DD

[20] 34.1899 12.2928 3.9836

[0586] [Table 72]

[0587] Example 24

[0588] Sn 22 23 29 30 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 -5.4924868E-20 -6.2771277E-20 1.2337303E-20 0.0000000E+00 A4 -1.5460946E-05 5.9553144E-06 -2.6184926E-06 4.0498615E-06 A5 4.1276173E-06 -5.1493890E-06 2.8950359E-07 1.8034123E-06 A6 -1.4338099E-06 1.3760352E-06 -2.1633773E-07 -4.2641219E-07 A7 2.0852612E-07 -1.6516885E-09 1.3678614E-08 -6.7401578E-09 A8 4.0245045E-09 -5.1465689E-08 8.7556193E-09 1.7713414E-08 A9 -4.9397721E-09 4.5164189E-09 -1.1968484E-09 -1.4634298E-09 A10 3.1660018E-10 8.2889050E-10 -1.3417587E-10 -3.1728446E-10 A11 5.0187446E-11 -1.2186549E-10 2.6708691E-11 4.3797246E-11 A12 -5.4242798E-12 -5.4274069E-12 9.0940049E-13 2.5786390E-12 A13 -2.9162960E-13 1.4373493E-12 -3.0159255E-13 -5.6727772E-13 A14 4.2969470E-14 -1.3811067E-15 -5.0384884E-16 -4.9091470E-15 A15 1.1653347E-15 -8.7246371E-15 1.9054206E-15 3.8103531E-15 A16 -1.9787383E-16 1.9991107E-16 -3.2233946E-17 -6.0615091E-17 A17 -3.8121062E-18 2.6566232E-17 -6.4198909E-18 -1.2982283E-17 A18 5.5937279E-19 -9.4079556E-19 1.8851394E-19 3.9395696E-19 A19 7.2969857E-21 -3.2034689E-20 8.9766807E-21 1.7769638E-20 A20 -8.0564584E-22 1.3798710E-21 -3.4460688E-22 -7.0740619E-22

[0589] [Example 25]

[0590] The structure and movement trajectory of the zoom lens of Example 25 are shown in FIG. Figure 50The zoom lens of Example 25 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups, a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0591] When zooming from the wide-angle end to the telephoto end, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by changing the spacing between them and the adjacent lens groups. A zoom lens consists of two focusing groups. The object-side focusing group, which serves as the first focusing group, consists of two lenses from the final lens group GE, the fourth and fifth lenses from the object side. The image-side focusing group consists of one lens from the final lens group GE, the sixth lens from the object side. When focusing from an object at infinity to an object at close range, the object-side focusing group moves toward the image side, and the image-side focusing group moves toward the object side. The anti-vibration group consists of three lenses from the object-side negative lens group GN, the second to fourth lenses from the object side.

[0592] Regarding the zoom lens of Example 25, basic lens data are shown in Table 73, 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. Figure 51 middle.

[0593] [Table 73]

[0594] Example 25

[0595] Sn R D Yes etc. θgF 1 76.0396 1.9575 1.85150 40.78 0.5696 2 55.2588 8.5946 1.43700 95.10 0.5336 3 -640.5727 0.2615 4 55.2155 5.5915 1.43700 95.10 0.5336 5 177.2697 DD[5] 6 208.7464 2.8691 1.43700 95.10 0.5336 7 -204.9978 2.1364 8 529.8782 1.0268 1.59282 68.62 0.5441 9 19.1668 4.5552 1.76182 26.52 0.6136 10 26.2695 4.2561 11 -51.0547 0.7626 1.83481 42.74 0.5649 12 100.6239 DD

[12] 13 44.0857 3.2450 1.92286 18.90 0.6496 14 5665.3433 0.1000 15 70.1417 0.9550 2.00272 19.32 0.6451 16 23.5971 7.2573 1.49700 81.61 0.5389 17 -54.5263 DD

[17] 18 -42.4670 0.9005 1.49700 81.61 0.5389 19 35.8591 2.2987 2.00069 25.46 0.6136 20 74.3822 DD

[20] 21(Wed) ∞ 1.3000 *22 23.1493 4.9781 1.61881 63.85 0.5418 *23 -749.5885 0.0998 24 52.3977 0.8427 1.96300 24.11 0.6213 25 18.9598 6.5816 1.59282 68.62 0.5441 26 -35.8111 2.1529 27 168.3767 2.2840 1.95906 17.47 0.6599 28 -60.0013 0.7058 1.85150 40.78 0.5696 29 21.0621 12.7096 30 192.6921 3.4206 1.89286 20.36 0.6394 31 -29.1116 1.4998 *32 54.2704 1.0709 1.85896 22.73 0.6284 *33 16.0211 24.6237 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 1.0060

[0596] [Table 74]

[0597] Example 25

[0598] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.80 90.89 133.95 Bf 27.51 27.51 27.51 FNo. 2.89 2.90 2.90 2ω[°] 29.6 16.6 11.2 DD[5] 2.6301 22.1824 30.8013 DD

[12] 16.8108 10.3334 3.0058 DD

[17] 3.0448 8.6185 15.7431 DD

[20] 30.0632 11.4146 2.9987

[0599] [Table 75]

[0600] Example 25

[0601] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 1.4123537E-19 -9.4156916E-20 7.4925968E-20 -1.2183517E-19 A4 -6.8270842E-06 1.6065891E-05 -4.7601781E-04 -5.0702215E-04 A5 -5.2826591E-06 -2.5110974E-06 4.9751171E-05 5.1534066E-05 A6 2.0994510E-06 8.9707805E-07 3.8834840E-06 3.9248222E-06 A7 -3.2022748E-07 -1.3602624E-07 -2.9482457E-06 -2.2497012E-06 A8 -2.6669510E-08 -1.3191285E-08 4.1195455E-07 1.4305376E-07 A9 1.2509724E-08 5.2991669E-09 6.6729812E-08 7.8256728E-08 A10 -3.9860442E-10 -2.6720835E-11 -1.9110438E-08 -9.1213169E-09 A11 -2.0981930E-10 -1.1055820E-10 -3.8735037E-10 -1.8100403E-09 A12 1.5628521E-11 5.1327476E-12 3.7658257E-10 2.4715472E-10 A13 1.8824395E-12 1.2831079E-12 -9.6045813E-12 2.5656723E-11 A14 -1.9573299E-13 -8.8625917E-14 -3.8406504E-12 -3.7525767E-12 A15 -9.3054413E-15 -8.4260128E-15 1.9198323E-13 -2.1335254E-13 A16 1.2414587E-15 7.0833580E-16 1.9243611E-14 3.2500120E-14 A17 2.3497784E-17 2.9459403E-17 -1.3218337E-15 9.5390297E-16 A18 -4.0489170E-18 -2.8241517E-18 -3.1438944E-17 -1.4924077E-16 A19 -2.2892072E-20 4.2660369E-20 3.2762990E-18 -1.7688461E-18 A20 5.4161003E-21 4.5396743E-21 -4.0771244E-20 2.8063511E-19

[0602] [Example 26]

[0603] The structure and movement trajectory of the zoom lens of Example 26 are shown in FIG. Figure 52The zoom lens of Example 26 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1M-th lens group GM1 having positive refractive power and a 2M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0604] When zooming from the wide-angle end to the telephoto end, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by changing the spacing between them and the adjacent lens groups. A zoom lens consists of two focusing groups. The object-side focusing group, which serves as the first focusing group, consists of two lenses from the final lens group GE, the fourth and fifth lenses from the object side. The image-side focusing group consists of one lens from the final lens group GE, the sixth lens from the object side. When focusing from an object at infinity to an object at close range, the object-side focusing group moves toward the image side, and the image-side focusing group moves toward the object side. The anti-vibration group consists of three lenses from the object-side negative lens group GN, the second to fourth lenses from the object side.

[0605] Regarding the zoom lens of Example 26, basic lens data are shown in Table 76, specifications and variable surface spacing are shown in Table 77, aspheric coefficients are shown in Table 78, and various aberration diagrams are shown in Table 79. Figure 53 middle.

[0606] [Table 76]

[0607] Example 26

[0608] Sn R D Yes etc. θgF 1 77.8737 1.9476 1.88300 40.80 0.5656 2 55.4905 8.3269 1.43700 95.10 0.5336 3 -1072.4266 0.2615 4 57.5353 5.6492 1.43700 95.10 0.5336 5 225.8764 DD[5] 6 247.3277 2.5719 1.43700 95.10 0.5336 7 -201.1779 2.4013 8 -1328.2787 1.0148 1.59282 68.62 0.5441 9 18.3338 2.7845 1.85478 24.80 0.6123 10 25.9273 4.0510 11 -61.6790 0.7523 1.83481 42.74 0.5649 12 88.3998 DD

[12] 13 46.2386 3.2144 1.95906 17.47 0.6599 14 -1550.8674 0.1000 15 85.8649 0.9625 1.95906 17.47 0.6599 16 24.0279 7.3914 1.49700 81.61 0.5389 17 -48.1394 DD

[17] 18 -38.5925 0.8890 1.49700 81.61 0.5389 19 36.5125 2.3527 2.00100 29.13 0.5995 20 81.8796 DD

[20] 21(Wed) ∞ 1.3000 *22 22.8804 4.5525 1.61881 63.85 0.5418 *23 -347.3699 0.0998 24 47.1935 0.8242 1.90366 31.31 0.5948 25 16.3280 6.9780 1.59282 68.62 0.5441 26 -45.3011 1.9998 27 593.2773 1.9764 2.00272 19.32 0.6451 28 -60.0013 0.6994 1.85150 40.78 0.5696 29 22.5909 12.1231 30 36.0808 4.4800 1.59551 39.24 0.5804 31 -33.3084 1.5001 *32 50.2352 1.0631 1.72903 54.04 0.5447 *33 14.1488 25.2990 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 1.0144

[0609] [Table 77]

[0610] Example 26

[0611] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.46 90.28 133.05 Bf 28.19 28.19 28.19 FNo. 2.89 2.90 2.89 2ω[°] 29.4 16.4 11.2 DD[5] 2.5573 24.2027 33.7469 DD

[12] 15.3540 9.5645 2.9676 DD

[17] 2.9898 8.2158 15.2104 DD

[20] 34.0138 12.9319 2.9900

[0612] [Table 78]

[0613] Example 26

[0614] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 7.3233157E-20 6.2771277E-20 0.0000000E-00 -9.1376381E-20 A4 -3.1039909E-06 1.7658353E-05 -1.6413810E-04 -1.5672789E-04 A5 -2.4600057E-06 -1.6594973E-06 4.2467432E-05 3.8086772E-05 A6 9.0739484E-07 6.3235322E-07 -4.7697645E-06 -4.4330117E-06 A7 -1.0974739E-07 -1.0108407E-07 -1.8706570E-06 -1.0302214E-06 A8 -2.0909958E-08 -8.4280094E-09 5.6831181E-07 2.3991365E-07 A9 5.7756260E-09 3.7411649E-09 1.4998242E-08 3.2369664E-08 A10 1.3340493E-10 -3.0343575E-12 -1.9753260E-08 -8.2412809E-09 A11 -1.3216144E-10 -8.1159462E-11 9.2620784E-10 -7.9207089E-10 A12 4.0260508E-12 3.3610099E-12 3.3570665E-10 1.8747890E-10 A13 1.5662444E-12 9.8209026E-13 -2.9015190E-11 1.1669363E-11 A14 -8.8105649E-14 -6.2900874E-14 -2.8626847E-12 -2.6052336E-12 A15 -1.0181982E-14 -6.6791496E-15 3.5959587E-13 -9.7736687E-14 A16 7.3161385E-16 5.2629832E-16 9.3169611E-15 2.0860884E-14 A17 3.4635228E-17 2.4034046E-17 -2.1070782E-15 4.3176843E-16 A18 -2.8670235E-18 -2.1617937E-18 1.7107663E-17 -8.7285418E-17 A19 -4.8316979E-20 -3.5651024E-20 4.8200835E-18 -7.8427280E-19 A20 4.3787536E-21 3.5228083E-21 -1.3248879E-19 1.4540169E-19

[0615] [Example 27]

[0616] The structure and movement trajectory of the zoom lens of Example 27 are shown in FIG. Figure 54The zoom lens of Example 27 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0617] When zooming from the wide-angle end to the telephoto end, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by changing the spacing between them and the adjacent lens groups. A zoom lens consists of two focusing groups. The object-side focusing group, which serves as the first focusing group, consists of two lenses from the final lens group GE, the fourth and fifth lenses from the object side. The image-side focusing group consists of one lens from the final lens group GE, the sixth lens from the object side. When focusing from an object at infinity to an object at close range, the object-side focusing group moves toward the image side, and the image-side focusing group moves toward the object side. The anti-vibration group consists of three lenses from the object-side negative lens group GN, the second to fourth lenses from the object side.

[0618] Regarding the zoom lens of Example 27, basic lens data are shown in Table 79, specifications and variable surface spacing are shown in Table 80, aspheric coefficients are shown in Table 81, and various aberration diagrams are shown in Table 82. Figure 55 middle.

[0619] [Table 79]

[0620] Example 27

[0621] Sn R D Yes etc. θgF 1 77.2738 1.9458 1.80400 46.53 0.5578 2 54.8064 8.7251 1.43700 95.10 0.5336 3 -562.9847 0.2615 4 59.1531 5.2634 1.43700 95.10 0.5336 5 197.3726 DD[5] 6 -285.6209 2.0336 1.43700 95.10 0.5336 7 -112.5625 1.6911 8 1131.1026 1.0123 1.59282 68.62 0.5441 9 18.0118 2.8648 1.91082 35.25 0.5822 10 25.6469 4.1111 11 -60.4306 0.7505 1.81600 46.62 0.5568 12 70.4017 DD

[12] 13 50.2001 2.8659 2.10420 17.02 0.6631 14 841.8617 0.1000 15 63.1047 0.9599 2.10420 17.02 0.6631 16 24.7626 7.3318 1.49700 81.61 0.5389 17 -46.0413 DD

[17] 18 -37.6813 0.8880 1.49700 81.61 0.5389 19 34.5621 2.4229 2.00069 25.46 0.6136 20 76.8432 DD

[20] 21(Wed) ∞ 1.3000 *22 21.1264 4.9803 1.61881 63.85 0.5418 *23 -348.5708 0.0998 24 46.2110 0.8238 1.90366 31.34 0.5964 25 14.5529 7.5274 1.59282 68.62 0.5441 26 -55.9869 1.9998 27 1356.7929 2.4920 2.00272 19.32 0.6451 28 -36.3779 0.6983 1.83400 37.16 0.5776 29 21.3876 14.1206 30 30.0284 3.8563 1.65412 39.68 0.5738 31 -71.7521 1.4998 *32 65.6822 1.0634 1.80139 45.45 0.5581 *33 19.6735 25.3028 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 1.0112

[0622] [Table 80]

[0623] Example 27

[0624] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.36 90.11 132.81 Bf 28.19 28.19 28.19 FNo. 2.88 2.89 2.88 2ω[°] 29.8 16.6 11.4 DD[5] 3.7765 25.0337 34.4681 DD

[12] 13.7755 8.9008 2.9734 DD

[17] 2.9898 7.1064 13.2942 DD

[20] 33.1777 12.6786 2.9838

[0625] [Table 81]

[0626] Example 27

[0627] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 5.2309398E-20 4.1847518E-20 7.4925968E-20 4.2642311E-19 A4 -6.5524292E-06 1.5202701E-05 2.0326259E-05 5.2566410E-05 A5 1.1429545E-06 -1.4658192E-06 8.7122513E-05 8.1363611E-05 A6 -3.6981863E-07 6.8844029E-07 -1.5438894E-05 -1.5057849E-05 A7 8.5997734E-09 -1.3267968E-07 -3.4495087E-06 -2.2601528E-06 A8 1.6103795E-08 -3.7502152E-09 1.0312655E-06 5.9156108E-07 A9 -2.4172466E-09 3.9922706E-09 4.4322349E-08 6.1899494E-08 A10 -1.8874421E-10 -1.2340559E-10 -3.2216903E-08 -1.6300976E-08 A11 6.3957304E-11 -7.5076932E-11 7.2323939E-10 -1.3988608E-09 A12 -5.0196061E-13 4.2829971E-12 5.4028478E-10 3.2395096E-10 A13 -8.5734890E-13 8.6099146E-13 -3.0845544E-11 2.0784650E-11 A14 3.8659696E-14 -6.1056835E-14 -4.9092818E-12 -4.3106434E-12 A15 6.2419537E-15 -5.8102561E-15 4.0430108E-13 -1.8236747E-13 A16 -4.2080185E-16 4.5682731E-16 2.1374518E-14 3.5310265E-14 A17 -2.3292973E-17 2.1134016E-17 -2.4189611E-15 8.5352677E-16 A18 1.9543814E-18 -1.7536797E-18 -2.0519699E-17 -1.5858571E-16 A19 3.4820912E-20 -3.1872937E-20 5.5957573E-18 -1.6419976E-18 A20 -3.4528049E-21 2.6968344E-21 -8.6920984E-20 2.9609740E-19

[0628] [Example 28]

[0629] The structure and movement trajectory of the zoom lens of Example 28 are shown in FIG. Figure 56The zoom lens of Example 28 includes, in order from the object side to the image side, an object-side positive group GP, an object-side negative group GN, an intermediate group GM, and a final group GE. The object-side positive group GP includes one lens group having positive refractive power. The object-side negative group GN includes one lens group having negative refractive power. The intermediate group GM includes, in order from the object side to the image side, two lens groups: a 1st M-th lens group GM1 having positive refractive power and a 2nd M-th lens group GM2 having negative refractive power. The final group GE includes one lens group having positive refractive power. The aperture stop St is included in the final group GE.

[0630] When zooming from the wide-angle end to the telephoto end, the object-side positive lens group GP and the final lens group GE are fixed to the image plane Sim, while the other lens groups move by changing the spacing between them and the adjacent lens groups. A zoom lens consists of two focusing groups. The object-side focusing group, which serves as the first focusing group, consists of two lenses from the final lens group GE, the fourth and fifth lenses from the object side. The image-side focusing group consists of one lens from the final lens group GE, the sixth lens from the object side. When focusing from an object at infinity to an object at close range, the object-side focusing group moves toward the image side, and the image-side focusing group moves toward the object side. The anti-vibration group consists of three lenses from the object-side negative lens group GN, the second to fourth lenses from the object side.

[0631] Regarding the zoom lens of Example 28, basic lens data are shown in Table 82, specifications and variable surface spacing are shown in Table 83, aspheric coefficients are shown in Table 84, and various aberration diagrams are shown in Table 85. Figure 57 middle.

[0632] [Table 82]

[0633] Example 28

[0634] Sn R D Yes etc. θgF 1 82.5236 1.9481 1.83481 42.74 0.5649 2 59.2766 8.2610 1.43700 95.10 0.5336 3 -471.1597 0.2615 4 61.2514 5.3196 1.43700 95.10 0.5336 5 236.6255 DD[5] 6 852.9334 2.5555 1.43700 95.10 0.5336 7 -129.2719 1.7562 8 564.2761 1.0105 1.59282 68.62 0.5441 9 19.6024 2.5918 1.85025 30.05 0.5980 10 27.7137 4.0042 11 -54.3230 0.7531 1.81600 46.62 0.5568 12 79.3273 DD

[12] 13 40.3875 3.4044 1.95906 17.47 0.6599 14 1409.8874 0.1000 15 113.2473 0.9568 2.00272 19.32 0.6451 16 23.2394 7.2085 1.49700 81.61 0.5389 17 -58.4520 DD

[17] 18 -43.6900 0.8888 1.49700 81.61 0.5389 19 41.8068 2.5651 2.00069 25.46 0.6136 20 169.3806 DD

[20] 21(Wed) ∞ 1.3000 *22 24.4044 4.5634 1.61881 63.85 0.5418 *23 -1532.2689 0.4239 24 50.7223 0.8331 1.85896 22.73 0.6284 25 18.6052 6.1487 1.59282 68.62 0.5441 26 -49.5796 1.9998 27 603.3841 2.9610 2.00069 25.46 0.6136 28 -28.3457 0.6954 1.83481 42.74 0.5649 29 18.0775 13.3715 30 26.0590 3.9042 1.64769 33.79 0.5939 31 -110.1095 1.4998 *32 313.9462 1.0677 1.80139 45.45 0.5581 *33 27.3536 25.5025 34 ∞ 2.8500 1.51633 64.14 0.5353 35 ∞ 1.0266

[0635] [Table 83]

[0636] Example 28

[0637] Goodbye Middle TV Zr 1.0 1.8 2.6 f 50.55 90.44 133.29 Bf 28.41 28.41 28.41 FNo. 2.90 2.90 2.90 2ω[°] 30.0 16.8 11.4 DD[5] 2.9550 27.0104 36.8993 DD

[12] 20.6318 12.0130 2.9709 DD

[17] 4.0574 4.8407 11.4678 DD

[20] 26.6857 10.4658 2.9920

[0638] [Table 84]

[0639] Example 28

[0640] Sn 22 23 32 33 KA 1.0000000E+00 1.0000000E+00 1.0000000E+00 1.0000000E+00 A3 -2.0923759E-20 4.1847518E-20 -2.9970387E-19 6.0917587E-20 A4 -8.4997883E-06 1.2364000E-05 5.0138400E-05 8.3524707E-05 A5 -1.6443500E-06 -3.6796892E-06 1.1615459E-04 1.0532429E-04 A6 8.4053292E-07 1.3749105E-06 -1.8880515E-05 -1.5891779E-05 A7 -1.8626751E-07 -2.1798449E-07 -4.6603848E-06 -3.5946508E-06 A8 -6.7089817E-09 -1.7201635E-08 1.2469893E-06 6.6186692E-07 A9 7.3547479E-09 8.5897454E-09 6.7037292E-08 1.0732027E-07 A10 -3.8297544E-10 -1.9532410E-10 -3.8430788E-08 -1.9636641E-08 A11 -1.3765480E-10 -1.7040640E-10 5.7024960E-10 -2.3297717E-09 A12 1.2188039E11 1.0493950E-11 6.3804116E-10 4.0637583E-10 A13 1.3901803E-12 1.9078684E-12 3.2089322E-11 3.2307225E-11 A14 -1.5672613E-13 -1.5893851E-13 -5.7827984E-12 -5.4501192E-12 A15 -7.8725273E-15 -1.2206507E-14 4.3374721E-13 -2.6679573E-13 A16 1.0511437E-15 1.1969188E-15 2.5522196E-14 4.4271095E-14 A17 2.3665561E-17 4.1760956E-17 2.6137913E-15 1.1910840E-15 A18 -3.6537453E-18 -4.5809631E-18 -2.8490598E-17 -1.9620310E-16 A19 -2.9481773E-20 -5.9357134E-20 6.0511058E-18 -2.2098275E-18 A20 5.2095215E-21 7.1109535E-21 -8.7949929E-20 3.6180238E-19

[0641] Tables 85 to 90 show the corresponding values ​​of conditional expressions (1) to (36) for the zoom lenses of Examples 1 to 28. The corresponding values ​​of the Examples shown in Tables 85 to 90 can also be used as the upper or lower limit of the conditional expressions to set the preferred range of the conditional expressions.

[0642] [Table 85]

[0643]

[0644] [Table 86]

[0645]

[0646] [Table 87]

[0647]

[0648] [Table 88]

[0649]

[0650] [Table 89]

[0651]

[0652] [Table 90]

[0653]

[0654] The zoom lenses of Examples 1 to 28 are compact in structure, but various aberrations are well corrected, maintaining high optical performance. Furthermore, the zoom lenses of Examples 1 to 28 have large image circles.

[0655] Next, an imaging device according to an embodiment of the present invention will be described. Figure 58 and Figure 59 2 shows an external view of a camera 30 as an imaging device according to an embodiment of the present invention. Figure 58 1 is a perspective view of the camera 30 as viewed from the front side. Figure 59 The figure shows a perspective view of a camera 30 viewed from the back. The camera 30 is a so-called mirrorless digital camera, and can detachably mount an interchangeable lens 20. The interchangeable lens 20 includes the zoom lens 1 according to one embodiment of the present invention housed in a lens barrel.

[0656] The camera 30 includes a camera body 31. A shutter button 32 and a power button 33 are provided on the top surface of the camera body 31. Furthermore, an operation unit 34, an operation unit 35, and a display unit 36 ​​are provided on the back surface of the camera body 31. The display unit 36 ​​can display the captured image and the image that existed within the angle of view before the image was captured.

[0657] An imaging aperture for incident light from a photographic subject is provided at the center of the front surface of the camera body 31 . A bayonet mount 37 is provided at a position corresponding to the imaging aperture, and the interchangeable lens 20 is mounted on the camera body 31 via the bayonet mount 37 .

[0658] An imaging element 38 is provided in the camera body 31. The imaging element 38 outputs an imaging signal corresponding to the subject image formed by the interchangeable lens 20. As the imaging element 38, for example, a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) can be used. A signal processing circuit (not shown) and a recording medium (not shown) are provided in the camera body 31. The signal processing circuit processes the imaging signal output from the imaging element 38 to generate an image. The recording medium is used to record the generated image. In the camera 30, a still image or a moving image can be captured by pressing the shutter button 32, and the image data obtained by the shooting is recorded in the above-mentioned recording medium.

[0659] 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 and may employ other values.

[0660] Furthermore, the imaging device according to the embodiment of the present invention is not limited to the above-mentioned example, and can be various types of cameras other than mirrorless cameras, film cameras, video cameras, and security cameras.

[0661] The following supplementary notes are further disclosed regarding the above-mentioned embodiments and examples.

[0662] [Note 1]

[0663] A zoom lens, which comprises, from the object side to the image side, an object side positive group with positive refractive power, an object side negative group with negative refractive power, an intermediate group and a final group.

[0664] The object side positive lens group, the object side negative lens group, the intermediate lens group, and the final lens group each include at least one lens group.

[0665] When changing the magnification, all the intervals between adjacent lens groups change, while the intervals between all the lenses in each lens group remain unchanged.

[0666] When focusing, all lenses in the object side positive group and all lenses in the middle group are fixed on the image plane.

[0667] When the back focus at the air-converted distance of the entire system in a state in which the wide-angle end is focused on an object at infinity is Bfw, the focal length of the entire system in a state in which the wide-angle end is focused on an object at infinity is fw, and the maximum half angle of view in a state in which the wide-angle end is focused on an object at infinity is ωw, the zoom lens satisfies the conditional equation (1) represented by the following equation,

[0668] 0.2<Bfw / (fw×tanωw)<5 (1).

[0669] [Note 2]

[0670] The zoom lens according to Supplementary Note 1, wherein

[0671] The object-side negative group includes a lens group having negative refractive power closest to the object side among lens groups having negative refractive power included in the zoom lens.

[0672] [Note 3]

[0673] The zoom lens according to Supplementary Note 1 or 2, wherein:

[0674] The final group includes 1 lens group.

[0675] [Note 4]

[0676] The zoom lens according to any one of Supplementary Notes 1 to 3, wherein:

[0677] The middle group includes at least three lenses.

[0678] [Note 5]

[0679] The zoom lens according to any one of Supplementary Notes 1 to 4, wherein:

[0680] When the paraxial curvature radius of the object-side surface of the negative lens closest to the object side among the negative lenses included in the object-side negative group is set to Rnf, and the paraxial curvature radius of the image-side surface of the negative lens closest to the object side among the negative lenses included in the object-side negative group is set to Rnr, the zoom lens satisfies the conditional formula (2) represented by the following formula,

[0681] 0.02<(Rnf-Rnr) / (Rnf+Rnr)<3 (2).

[0682] [Note 6]

[0683] The zoom lens according to any one of Supplementary Notes 1 to 5, wherein

[0684] During zooming, the lens group closest to the object in the object-side positive lens group moves.

[0685] [Note 7]

[0686] The zoom lens according to any one of Supplementary Notes 1 to 6, wherein:

[0687] The zoom lens includes at least one focus group that moves during focusing.

[0688] The focus group closest to the object side among the focus groups included in the zoom lens has negative refractive power.

[0689] [Note 8]

[0690] The zoom lens according to any one of Supplementary Notes 1 to 7, wherein:

[0691] The object side negative group includes at least two negative lenses.

[0692] The image side surface of the negative lens closest to the object side among the negative lenses included in the object side negative group is a concave surface.

[0693] The object-side surface of the negative lens closest to the image side among the negative lens elements included in the object-side negative group is a concave surface.

[0694] [Note 9]

[0695] The zoom lens according to any one of Supplementary Notes 1 to 8, wherein:

[0696] The intermediate group includes at least one lens group with positive refractive power,

[0697] The positive refractive power lens group closest to the object in the lens group with positive refractive power included in the middle group includes at least two positive lenses.

[0698] When the Abbe number of the d-line reference of the positive lens closest to the object side among the positive lenses included in the middle group is set to vMp1 and the Abbe number of the d-line reference of the positive lens second from the object side among the positive lenses included in the middle group is set to vMp2, the zoom lens satisfies the conditional expression (3) represented by the following expression,

[0699] 20<(vMp1+vMp2) / 2<100 (3).

[0700] [Note 10]

[0701] The zoom lens according to any one of Supplementary Notes 1 to 9, wherein:

[0702] The intermediate group includes at least two lens groups whose intervals with adjacent lens groups change during magnification change.

[0703] [Note 11]

[0704] The zoom lens according to any one of Supplementary Notes 1 to 10, wherein:

[0705] The intermediate group includes at least one lens group with positive refractive power,

[0706] The lens group with positive refractive power closest to the object among the lens groups with positive refractive power included in the intermediate group includes two positive lenses in order from the closest object side toward the image side.

[0707] [Note 12]

[0708] The zoom lens according to any one of Supplementary Notes 1 to 11, wherein:

[0709] The intermediate group includes at least one lens group with positive refractive power,

[0710] The positive refractive power lens group closest to the object in the lens group with positive refractive power included in the middle group includes at least two positive lenses.

[0711] The object-side surface of the positive lens closest to the object among the positive lenses included in the lens group closest to the object and having positive refractive power in the middle group is a convex surface.

[0712] [Note 13]

[0713] The zoom lens according to any one of Supplementary Notes 1 to 12, wherein:

[0714] The object side negative group includes at least four lenses.

[0715] [Note 14]

[0716] The zoom lens according to any one of Supplementary Notes 1 to 13, wherein:

[0717] When the open F value in a state of focusing on an object at infinity at the wide-angle end is defined as Fnow, the zoom lens satisfies the conditional expression (4) represented by the following expression:

[0718] 2<Fnow<4.8 (4).

[0719] [Note 15]

[0720] The zoom lens according to any one of Supplementary Notes 1 to 14, wherein

[0721] Among the lens groups included in the middle group, the lens group closest to the image side has positive refractive power.

[0722] [Note 16]

[0723] The zoom lens according to any one of Supplementary Notes 1 to 15, wherein:

[0724] When the focal length of the object side positive group at the wide-angle end is set to fGPw, the zoom lens satisfies the conditional expression (5) represented by the following expression,

[0725] 0.05<fw / fGPw<2.5 (5).

[0726] [Note 17]

[0727] The zoom lens according to any one of Supplementary Notes 1 to 16, wherein:

[0728] When the focal length of the entire system in a state of focusing on an object at infinity at the telephoto end is ft and the focal length of the object-side positive group at the wide-angle end is fGPw, the zoom lens satisfies the conditional equation (6) represented by the following equation,

[0729] 0.4<ft / fGPw<4.5 (6).

[0730] [Note 18]

[0731] The zoom lens according to any one of Supplementary Notes 1 to 17, wherein:

[0732] The object-side negative group includes a lens group having a biconvex air lens formed therein.

[0733] [Note 19]

[0734] The zoom lens according to any one of Supplementary Notes 1 to 18, wherein

[0735] The object side negative group includes a lens group with negative refractive power,

[0736] During focusing, the entire or a portion of the lens group having negative refractive power of the object-side negative group moves along the optical axis.

[0737] [Note 20]

[0738] The zoom lens according to any one of Supplementary Notes 1 to 18, wherein

[0739] During focusing, the entire or a portion of the final group moves along the optical axis.

[0740] [Note 21]

[0741] The zoom lens according to any one of Supplementary Notes 1 to 20, wherein

[0742] During zooming, the lens group closest to the image side of the final lens group moves.

[0743] [Note 22]

[0744] An imaging device comprising the zoom lens according to any one of Supplementary Notes 1 to 21.

Claims

1. A zoom lens, which comprises, from the object side to the image side, an object side positive group having positive refractive power, an object side negative group having negative refractive power, an intermediate group and a final group, The object side positive group, the object side negative group, the intermediate group, and the final group each include at least one lens group, When changing the magnification, all the intervals between adjacent lens groups change, while the intervals between all the lenses in each lens group remain unchanged. When focusing, all lenses in the object side positive group and all lenses in the intermediate group are fixed relative to the image plane. When the back focus at the air conversion distance of the entire system in the state of focusing on the infinite object at the wide angle end is set to Bfw, the focal length of the entire system in the state of focusing on the infinite object at the wide angle end is set to fw, and the maximum half angle of view in the state of focusing on the infinite object at the wide angle end is set to ωw, the zoom lens satisfies the conditional expression (1) represented by the following expression, 0.2 <Bfw / (fw×tanωw)<5(1)。 2. The zoom lens according to claim 1, wherein: The object-side negative group includes a lens group having negative refractive power that is closest to the object side among lens groups having negative refractive power included in the zoom lens.

3. The zoom lens according to claim 1 or 2, wherein: The final group includes 1 lens group.

4. The zoom lens according to claim 1 or 2, wherein: The middle group includes at least three lenses.

5. The zoom lens according to claim 1 or 2, wherein: When the paraxial curvature radius of the object-side surface of the negative lens closest to the object side among the negative lenses included in the object-side negative group is set to Rnf, and the paraxial curvature radius of the image-side surface of the negative lens closest to the object side among the negative lenses included in the object-side negative group is set to Rnr, the zoom lens satisfies conditional formula (2) represented by the following formula, 0.02<(Rnf-Rnr) / (Rnf+Rnr)<3(2).

6. The zoom lens according to claim 1 or 2, wherein: When changing the magnification, the lens group closest to the object side of the object side positive group moves.

7. The zoom lens according to claim 1 or 2, wherein: The zoom lens includes at least one focus group that moves during focusing. The focus group closest to the object side among the focus groups included in the zoom lens has negative refractive power.

8. The zoom lens according to claim 1 or 2, wherein: The object side negative group includes at least two negative lenses. The image side surface of the negative lens closest to the object side among the negative lenses included in the object side negative group is a concave surface, The object-side surface of the negative lens closest to the image side among the negative lenses included in the object-side negative group is a concave surface.

9. The zoom lens according to claim 1 or 2, wherein: The intermediate group includes at least one lens group with positive refractive power, The lens group with positive refractive power closest to the object in the lens group with positive refractive power included in the middle group includes at least two positive lenses. When the Abbe number of the d-line reference of the positive lens closest to the object side among the positive lenses included in the middle group is set to v Mp1, and the Abbe number of the d-line reference of the second positive lens from the object side among the positive lenses included in the middle group is set to v Mp2, the zoom lens satisfies the conditional expression (3) represented by the following expression, 20<(vMp1+vMp2) / 2<100 (3).

10. The zoom lens according to claim 1 or 2, wherein: The intermediate group includes at least two lens groups whose intervals with adjacent lens groups change when the magnification is changed.

11. The zoom lens according to claim 1 or 2, wherein: The intermediate group includes at least one lens group with positive refractive power, The lens group with positive refractive power closest to the object among the lens groups with positive refractive power included in the intermediate group includes two positive lenses in order from the closest to the object side toward the image side.

12. The zoom lens according to claim 1 or 2, wherein: The intermediate group includes at least one lens group with positive refractive power, The lens group with positive refractive power closest to the object in the lens group with positive refractive power included in the middle group includes at least two positive lenses. The object-side surface of the positive lens closest to the object among the positive lenses included in the lens group closest to the object and having positive refractive power of the intermediate group is a convex surface.

13. The zoom lens according to claim 1 or 2, wherein: The object side negative group includes at least 4 lenses.

14. The zoom lens according to claim 1 or 2, wherein: When the open F value in a state where the zoom lens is focused on an object at infinity at the wide angle end is Fnow, the zoom lens satisfies the conditional expression (4) represented by the following expression, 2 <Fnow<4.8 (4)。 15. The zoom lens according to claim 1 or 2, wherein: Among the lens groups included in the intermediate group, the lens group closest to the image side has positive refractive power.

16. The zoom lens according to claim 1 or 2, wherein: When the focal length of the object side positive group at the wide angle end is set to fGPw, the zoom lens satisfies the conditional expression (5) represented by the following expression, 0.05 <fw / fGPw<2.5 (5)。 17. The zoom lens according to claim 1 or 2, wherein: When the focal length of the entire system in a state of focusing on an infinitely distant object at the telephoto end is ft, and the focal length of the object side positive group at the wide angle end is fGPw, the zoom lens satisfies conditional equation (6) represented by the following equation, 0.4 <ft / fGPw<4.5 (6)。 18. The zoom lens according to claim 1 or 2, wherein: The object-side negative group includes a lens group having a biconvex air lens formed therein.

19. The zoom lens according to claim 1 or 2, wherein: The object side negative group includes a lens group having negative refractive power, During focusing, the entirety or a portion of the lens group having negative refractive power of the object-side negative group moves along the optical axis.

20. The zoom lens according to claim 1 or 2, wherein: During focusing, the whole or a portion of the final group moves along the optical axis.

21. The zoom lens according to claim 1 or 2, wherein: When changing the magnification, the lens group closest to the image side of the final group moves. 22 . An imaging device comprising the zoom lens according to claim 1 .

Images