JP6632320B2 - Zoom lens and imaging device having the same - Google Patents

Description

  The present invention relates to a zoom lens and an imaging apparatus having the same, and is particularly suitable for a broadcast television camera, a movie camera, a video camera, a digital still camera, a silver halide photographic camera, and the like.

  2. Description of the Related Art In recent years, a zoom lens having a small size and light weight, a wide angle of view, a high zoom ratio, and high optical performance has been demanded for an imaging device such as a television camera, a movie camera, a photographic camera, and a video camera. In particular, an imaging device such as a CCD or a CMOS used in a television / movie camera as a professional moving image photographing system has a substantially uniform resolution over the entire imaging range. Therefore, a zoom lens using the same is required to have a substantially uniform resolution from the center of the screen to the periphery of the screen. In addition, a reduction in size and weight is required for a shooting mode that emphasizes mobility and operability.

  On the other hand, if a wide-angle lens having a short focal length at the wide-angle end is used, a wide range can be photographed, and perspective can be enhanced. Users who want to take advantage of the shooting effect are demanding a wide-angle zoom lens with a wider angle, a higher zoom ratio, smaller size, lighter weight, and higher performance.

  As a wide-angle zoom lens, a negative lead type zoom lens in which a lens group having a negative refractive power is arranged closest to the object side and is composed of four or more lens groups as a whole is known.

  For example, in Patent Document 1, a six-group zoom lens having an F-number of about 2.2 to 2.5 at the wide-angle end, an angle of view of about 45 to 65 degrees at the wide-angle end, and a zoom ratio of about 1.4 to 1.7 times. Is disclosed. Further, in Patent Document 2, a six-group zoom lens having an F-number of about 1.8 to 2.5 at the wide-angle end, an angle of view of about 35 to 60 degrees at the wide-angle end, and a zoom ratio of about 1.2 to 1.5 times Is disclosed. Each zoom lens includes, in order from the object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a positive refractive power, and a fourth lens group having a negative refractive power. , A fifth lens unit having a positive refractive power, and a sixth lens unit having a positive refractive power.

JP 2014-38153 A Patent No. 4957124

  However, in the zoom lenses disclosed in Patent Literatures 1 and 2, the refractive power and lens configuration of each lens group are disadvantageous for further widening the angle and increasing the magnification. In addition, it is difficult to suppress the increase in the overall length due to the multiplication. In particular, when the angle of view at the wide-angle end exceeds 70 degrees, the tendency of the lens diameter to increase becomes remarkable, and when the zoom ratio exceeds 2, the movement amount of the zooming group tends to increase. Will be noticeable.

The present invention is, for example, a wide field angle, a high zoom ratio, and an object thereof is to provide a compact, lightweight, and points at favorable zoom lens passes Ru high optical performance in the entire zoom range.

In order to achieve the above object, a zoom lens according to the present invention includes , in order from an object side to an image side, a first lens unit having a negative refractive power that does not move for zooming, and a positive lens unit that moves for zooming. a second lens group having a refractive power, includes an aperture stop, a third lens group having negative refractive power which does not move for zooming, and a fourth lens group that moves for zooming, for zooming And a fifth lens group that does not move, wherein at least three sub lens groups included in the second lens group and the fourth lens group move in the optical axis direction for zooming. The focal lengths of the first lens unit and the third lens unit are f1 and f3, respectively. In zooming from the wide-angle end to the telephoto end, the sub lens included in the second lens unit is zoomed. In the zooming from the wide-angle end to the telephoto end, the movement amount of the sub-lens group that moves the most among the sub-lens groups included in the fourth lens group is m2, The amount is m4, the lateral magnification of the second lens group at the wide-angle end is β2_w, and the lateral magnification of the second lens group at the telephoto end is β2_t .
0.67 ≦ f1 / f3 <4.0
1.4 <| m2 | / | m4 | <50.0
1.5 <β2_t / β2_w <4.0
Characterized in that you satisfy the condition.
The zoom lens according to the present invention includes , in order from the object side to the image side, a first lens unit having a negative refractive power that does not move for zooming, and a second lens group having a positive refractive power that moves for zooming. A third lens group including a lens group, an aperture stop, and having a negative refractive power that does not move for zooming, a fourth lens group that moves for zooming, and a fifth lens that does not move for zooming And at least three sub-lens groups included in the second lens group and the fourth lens group move in the optical axis direction for zooming, and the first lens group is used for focusing. The first lens group and the twelfth sub-lens group having a positive refractive power that move for focusing. The focal length of the third lens group is f1 and f3, respectively, and the moving amount of the sub lens group that moves the most among the sub lens groups included in the second lens group during zooming from the wide-angle end to the telephoto end is m2. In zooming from the wide-angle end to the telephoto end, the moving amount of the sub lens group that moves the most among the sub lens groups included in the fourth lens group is m4, and the focal length of the eleventh sub lens group is f11. And the focal length of the twelfth sub-lens group is f12p,
0.6 <f1 / f3 <4.0
1.4 <| m2 | / | m4 | <50.0
-0.15 <f11 / f12p <-0.04
The following conditional expression is satisfied.
Further, the zoom lens of the present invention includes , in order from the object side to the image side, a first lens unit having a negative refractive power that does not move for zooming, and a second lens group having a positive refractive power that moves for zooming. A third lens group including a lens group, an aperture stop, and having a negative refractive power that does not move for zooming, a fourth lens group that moves for zooming, and a fifth lens that does not move for zooming A zoom lens, wherein at least three sub-lens groups included in the second lens group and the fourth lens group move in the optical axis direction for zooming, wherein the first lens group Consists of an eleventh sub-lens group having a negative refractive power that does not move for focusing and a twelfth sub-lens group having a negative refractive power that moves for focusing. The focal lengths of the first lens group and the third lens group are f1 and f3, respectively. In zooming from the wide-angle end to the telephoto end, the sub-lens group that moves the most among the sub-lens groups included in the second lens group In the zooming from the wide-angle end to the telephoto end, the moving amount of the sub lens group that moves the most among the sub lens groups included in the fourth lens group is m4, and the moving amount of the eleventh sub lens group is m. The focal length of the lens group is f11, and the focal length of the twelfth sub-lens group is f12n.
0.6 <f1 / f3 <4.0
1.4 <| m2 | / | m4 | <50.0
0.3 <f11 / f12n <0.8
The following conditional expression is satisfied.

According to the present invention, for example, a wide field angle, a high zoom ratio, it is possible to provide a small and light, and the point at advantageous zoom lens passes Ru high optical performance in the entire zoom range.

Lens cross-sectional view of Numerical Example 1 at the wide-angle end when focused on infinity Aberration diagram at the wide-angle end (a), a middle zoom position (b), and a telephoto end (c) at infinity in Numerical Embodiment 1 Sectional view of lens at the wide-angle end and focused on infinity according to Numerical example 2 Aberration diagram at the wide-angle end (a), at the middle zoom position (b), and at the telephoto end (c) at infinity in numerical embodiment 2 Sectional view of lens at the wide-angle end and focused on infinity according to Numerical example 3 Aberration diagram at the wide-angle end (a), a middle zoom position (b), and a telephoto end (c) at infinity in Numerical Embodiment 3 Numerical Example 4 Lens Cross Section at Infinity Focus at Wide Angle End Aberration diagram at the wide-angle end (a), at the middle zoom position (b), and at the telephoto end (c) at infinity in Numerical Embodiment 4 Sectional view of lens at the wide-angle end and focused on infinity according to Numerical example 5 Aberration diagram at the wide-angle end (a), at the middle zoom position (b), and at the telephoto end (c) at infinity in Numerical Embodiment 5 Sectional view of lens at the wide-angle end and focused on infinity according to Numerical example 6 Aberration diagram at the wide-angle end (a), a middle zoom position (b), and a telephoto end (c) at infinity in Numerical Embodiment 6 Sectional view of the numerical example 7 at the wide-angle end when focused on infinity Aberration diagrams at the wide-angle end (a), at the middle zoom position (b), and at the telephoto end (c) at infinity focus in Numerical Example 7 Numerical Embodiment 8 Sectional View of Lens at Infinity Focus at Wide Angle End Aberration diagram at the wide-angle end (a), at a middle zoom position (b), and at the telephoto end (c) at infinity in Numerical Embodiment 8 Sectional view of a numerical example 9 at the wide angle end upon focusing on infinity Aberration diagram at the wide-angle end (a), a middle zoom position (b), and a telephoto end (c) at infinity in Numerical Example 9 Sectional view of the lens in numerical example 10 at the wide-angle end when focused on infinity Aberration diagram at the wide-angle end (a), at a middle zoom position (b), and at the telephoto end (c) at infinity in Numerical Embodiment 10 Optical path diagrams at the wide-angle end (a) and the telephoto end (b) of Numerical Example 1. Schematic diagram relating to correction of chromatic aberration of two colors of axial chromatic aberration of the positive lens group and remaining secondary spectrum Schematic diagram of main parts of the imaging device of the present invention

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
First, the features of the zoom lens of the present invention will be described along with each conditional expression.

  The present invention provides a focal length ratio between a first lens group and a third lens group fixed during zooming, and a second lens in order to achieve a wide angle of view, a high zoom ratio, a small size and light weight, and high optical performance in the entire zoom range. It is characterized in that the ratio of the movement amount of the most moving group of each of the group and the fourth lens group is defined.

Specifically, the zoom lens according to the present invention includes, in order from the object side, a fixed negative first lens group during zooming, at least one or more second lens groups that move during zooming, and a second lens group that has an overall positive refractive power. The zoom lens includes a negative third lens unit fixed during zooming including an aperture stop, at least one fourth lens unit that moves during zooming, and a fifth lens unit fixed during zooming. Also, at the time of zooming, at least three or more lens groups move in the optical axis direction. The focal lengths of the first lens unit and the third lens unit are f1 and f3, respectively, the amount of movement of the most moving group of the second lens unit during zooming from the wide angle end to the telephoto end, and the focal length of the fourth lens unit. When the moving amount of the group that moves most is m2 and m4, respectively,
0.6 <f1 / f3 <4.0 (1)
1.4 <| m2 | / | m4 | <50.0 (2)
The following conditions are satisfied.

  In the present invention, a first lens group having a negative refractive power that does not move for zooming, a second lens group having a positive refractive power, and a third lens group having a negative refractive power that move during zooming are provided. The following describes the optical effect of the operation.

  FIG. 21 is an optical path diagram at the wide-angle end (a) and the telephoto end (b) according to the first embodiment of the present invention. L1 denotes a first lens group, L2 denotes a second lens group, L3 denotes a third lens group, L41 denotes a fourth lens group, and L5 denotes a fifth lens group. The second lens unit L2 is divided into two sub lens units, a 21st lens unit L21 and a 22nd lens unit L22. The fourth lens unit is constituted by one group of the 41st lens unit L41. As can be seen from FIG. 21, in the embodiment of the present invention, the first lens group and the second lens group are separated at the wide-angle end, and the trajectory of the second lens group approaches the first lens group at the telephoto end. ing. At the wide-angle end, the first lens group having a negative refractive power and the second lens group having a positive refractive power are arranged apart from each other, so that the absolute value of the lateral magnification of the second lens group at the wide-angle end can be reduced. In addition, the entrance pupil can be pushed toward the object side. Therefore, the configuration is advantageous for achieving both a wide angle and small size and light weight. Next, a description will be given of the optical function of the third lens unit having a negative refractive power that does not move for zooming and the 41st lens unit that moves for zooming. The light emitted from the second lens group enters the third lens group as convergent light, and the light beam incident on the third lens group enters the 41st lens group as divergent light. Therefore, the image point of the third lens group, that is, the object point of the forty-first lens group exists on the object side with respect to the forty-first lens group. The 41st lens group is a lens group for correcting an image plane movement generated by zooming, and moves from the wide-angle end to the telephoto end for image plane correction. Further, by disposing the aperture stop in the third lens group that does not move for zooming, the mechanism of the aperture stop does not move during zooming, and the weight of the movable group can be reduced. Further, by moving three or more groups at the time of zooming, fluctuations in spherical aberration and image plane aberration are corrected.

  Further, by satisfying the above-mentioned expressions (1) and (2), it is possible to effectively achieve high optical performance over the entire zoom range with a wide angle of view, small size and light weight.

Equation (1) defines the relationship between the first and third lens groups that are fixed during zooming. By satisfying the expression (1), it is possible to efficiently achieve a high zoom ratio, small size and light weight, and high optical performance. If the upper limit of the expression (1) is not satisfied, the refractive power of the third lens group is increased, so that the height of light rays incident on the fourth lens group is increased, and aberration fluctuations due to zooming, particularly fluctuations of spherical aberration, are large. This makes it difficult to achieve good optical performance over the entire zoom range. If the lower limit of the expression (1) is not satisfied, the refracting power of the third lens group becomes weak, so that the image point of the third lens group (= the object point of the fourth lens group) relatively moves toward the object side. Therefore, the amount of movement of the lens unit that performs image plane correction of the fourth lens unit during zooming becomes large, and it is difficult to reduce the size and weight. More preferably, the expression (1) is set as follows.
0.65 <f1 / f3 <3.65 (1a)

Equation (2) defines the ratio of the amount of movement of the most moving group in the second lens group to the amount of movement of the most moving group in the fourth lens group during zooming from the wide-angle end to the telephoto end. I have. By satisfying the expression (2), it is possible to efficiently achieve a high zoom ratio, small size and light weight, and high optical performance. If the upper limit of the expression (2) is not satisfied, the amount of movement of the second lens group becomes too large, and the distance between the first group and the aperture stop becomes large. Therefore, the first lens unit becomes large, and it is difficult to achieve both high zoom ratio and small size and light weight. If the lower limit of the expression (2) is not satisfied, the amount of movement of the fourth lens group becomes too large, and the distance between the fifth lens group and the aperture stop becomes large. For this reason, the fifth lens group becomes large, and it is difficult to achieve both a high zoom ratio and a reduction in size and weight.
More preferably, the expression (2) is set as follows.
1.55 <| m2 | / | m4 | <20.00 (2a)

As a further aspect of the zoom lens of the present invention, the variable power sharing of the second lens group, which is the main variable power group, is specified. It is preferable that the lateral magnification β2_w of the second lens group at the wide-angle end when focused on infinity and the lateral magnification β2_t of the second lens group at the telephoto end when focused on infinity satisfy the following conditional expressions.
1.5 <β2_t / β2_w <4.0 (3)

By satisfying the expression (3), the second lens unit, which is the main zooming unit, has a configuration that contributes to zooming more than a certain level, and is a configuration advantageous for widening the angle of view and increasing the zoom ratio. If the upper limit of the expression (3) is not satisfied, the amount of movement of the second lens unit due to zooming becomes too large, and the distance from the stop at the telephoto end is greatly away from the object side. As a result, the ray height of the axial ray passing through the second lens group changes greatly during zooming from the wide-angle end to the telephoto end, and it becomes difficult to suppress fluctuations of spherical aberration and coma due to zooming. If the lower limit of (3) is not satisfied, it will be difficult to achieve a high zoom ratio, and the distance between the first lens unit and the second lens unit will be short at the wide angle end, and the lateral magnification of the second lens unit will be reduced. Since it is difficult to reduce the size, it is difficult to widen the angle. More preferably, the equation (3) is set as follows.
1.7 <β2_t / β2_w <3.0 (3a)

As a further aspect of the zoom lens of the present invention, the relationship between the focal length of the first lens group and the focal length of the zoom lens at the infinity in-focus condition and at the wide-angle end is defined. It is preferable that the focal length f1 of the first lens group and the focal length fw of the zoom lens at the wide-angle end satisfy the following conditional expression.
−5.0 <f1 / fw <−1.5 (4)

By satisfying the expression (4), it is possible to achieve high optical performance while achieving both wide angle and small size and light weight. If the upper limit of the expression (4) is not satisfied, the refractive power of the first lens group becomes strong, and it becomes difficult to correct aberration fluctuation due to zooming and aberration fluctuation due to focusing. If the lower limit condition of the expression (4) is not satisfied, the refractive power of the first lens group is insufficient, and it is difficult to achieve both a wide angle and a small size and light weight. More preferably, equation (4) is set as follows.
-4.0 <f1 / fw <-1.7 (4a)

As a further aspect of the zoom lens of the present invention, the absolute value of the lateral magnification at the wide angle end of the second lens group is defined. It is preferable that the absolute value | β2_w | of the lateral magnification of the second lens unit at the wide-angle end when focused on infinity satisfies the following conditional expression.
| Β2_w | <1.0 (5)

By satisfying the expression (5), it is possible to widen the angle. If the expression (5) is not satisfied, the lateral magnification of the second lens unit at the wide-angle end becomes too large, and wide angle cannot be achieved. More preferably, the expression (5) is set as follows.
| Β2_w | <0.75 (5a)

  According to a further aspect of the zoom lens of the present invention, it is provided that the third lens group includes at least two lenses having a negative refractive power. By having two or more lenses having negative refractive power, high optical performance can be achieved. If the third lens group is composed of a single lens having a negative refractive power, the refractive power of the lens having a negative refractive power becomes too high, and a high-order spherical aberration or the like is greatly generated. Become.

  As a further aspect of the zoom lens of the present invention, it is defined that the lens closest to the object in the first lens group has a negative refractive power. Since the lens closest to the object side in the first lens group has negative refractive power, it is possible to achieve both wide angle and small size and light weight. When the lens closest to the object side of the first lens group has a positive refractive power, a lens having a large diameter and a high negative refractive power must be disposed on the image side lens than the lens closest to the object side. It is difficult to achieve both wide angle and small size and light weight.

  As a further aspect of the zoom lens of the present invention, it is provided that the first lens group is constituted by an eleventh lens group having a fixed negative refractive power during focusing and a twelfth lens group moving during focusing. I have. By adopting a configuration in which focusing is performed within the first lens group, the amount of focusing can be made constant regardless of zooming, which is advantageous for simplifying the driving mechanism and reducing the size of the focus lens group. Configuration.

  As a further aspect of the zoom lens of the present invention, the relationship between the eleventh lens group and the twelfth lens group in the first lens group is defined. It is preferable that the twelfth lens group that moves during focusing has a positive refractive power, and the focal length f11 of the eleventh lens group and the focal length f12p of the twelfth lens group satisfy the following conditional expression.

−0.15 <f11 / f12p <−0.04 (6)
If the upper limit of the expression (6) is not satisfied, the positive refracting power of the twelfth lens group becomes weak, so that the moving distance for focusing becomes large and it is difficult to reduce the size and weight. If the lower limit of the expression (6) is not satisfied, the positive refractive power of the twelfth lens group becomes strong, and the negative refractive power of the entire first lens group cannot be increased. Become. More preferably, the expression (6) is set as follows.
−0.12 <f11 / f12p <−0.05 (6a)

As a further aspect of the zoom lens of the present invention, the relationship between the eleventh lens group and the twelfth lens group in the first lens group is defined. It is preferable that the twelfth lens group that moves during focusing has a negative refractive power, and that the focal length f11 of the eleventh lens group and the focal length f12n of the twelfth lens group satisfy the following conditional expression.
0.3 <f11 / f12n <0.8 (7)

If the upper limit of the expression (7) is not satisfied, the negative refractive power of the twelfth lens group becomes too strong, and it becomes difficult to correct fluctuations in off-axis aberration such as fluctuations in field curvature due to focusing. If the lower limit of the expression (7) is not satisfied, the negative refractive power of the twelfth lens group becomes weak, so that the moving distance for focusing becomes large and it is difficult to reduce the size and weight. More preferably, equation (7) is set as follows.
0.35 <f11 / f12n <0.75 (7a)

As a further aspect of the zoom lens of the present invention, the second lens group has at least one cemented lens composed of one convex lens and one concave lens, and one of the cemented lenses has a predetermined optical property. It has a partial dispersion ratio of the material.
When the Abbe number and partial dispersion ratio of the positive lens of the cemented lens composed of one convex lens and one concave lens are ν2p and θ2p, and the Abbe number and the partial dispersion ratio of the concave lens are ν2n and θ2n, the following conditional expression is obtained. It is preferable that a satisfying cemented lens be provided in the second lens group.
−3.00 × 10 ⁻³ <(θ2p−θ2n) / (ν2p−ν2n) <− 1.5 × 10 ⁻³
... (8)

Here, the Abbe number and the partial dispersion ratio of the material of the optical element (lens) used in the present invention are as follows. The refractive indices of the g line (435.8 nm), the F line (486.1 nm), the d line (587.6 nm), and the C line (656.3 nm) of the Fraunhofer line are denoted by Ng, NF, Nd, and NC, respectively. Then, the Abbe number νd and the partial dispersion ratio θgF for the g-line and the F-line are as follows.
νd = (Nd−1) / (NF−NC) (A)
θgF = (Ng−NF) / (NF−NC) (a)

In existing optical materials, the partial dispersion ratio θgF exists in a narrow range with respect to the Abbe number νd. The smaller the Abbe number νd, the larger the partial dispersion ratio θgF, and the larger the Abbe number νd, the lower the refractive index. Here, the chromatic aberration correction conditions of a thin-walled close contact system composed of two lenses 1 and 2 having refractive powers φ1 and φ2 and Abbe numbers ν1 and ν2 are as follows:
φ1 / ν1 + φ2 / ν2 = E (C)
It is represented by Here, the combined refractive power φ of the lenses 1 and 2 is
φ = φ1 + φ2 (D)
It is. In the expression (c), when E = 0 is satisfied, the imaging positions of the C-line and the F-line coincide with each other in chromatic aberration. At this time, φ1 and φ2 are represented by the following equations.
φ1 = φ × ν1 / (ν1−ν2) (E)
φ2 = φ × ν2 / (ν1−ν2) (f)

FIG. 22 is a schematic diagram relating to correction of chromatic aberration of two colors of axial chromatic aberration by the lens group LP having a positive refractive power and remaining secondary spectrum. In FIG. 22, a material having a large Abbe number ν1 is used for the positive lens 1, and a material having a small Abbe number ν2 is used for the negative lens 2. Therefore, the partial dispersion ratio θ1 of the positive lens 1 is small, and the partial dispersion ratio θ2 of the negative lens 2 is large. When the axial chromatic aberration is corrected by the C line and the F line, the image point of the g line is shifted to the image side. Defining the shift amount of the axial chromatic aberration of the g-line with respect to the C-line and the F-line when the light beam is incident at an object distance of infinity as a secondary spectrum amount ΔS,
ΔS = − (1 / φ) × (θ1−θ2) / (ν1−ν2) (G)
It is represented by In order to favorably correct the secondary spectrum of the axial chromatic aberration at the telephoto end, it is necessary to adjust the generation amount of the second lens group in which the secondary spectrum is remarkably generated. The second lens group has a positive refractive power. In order to satisfactorily correct the secondary spectrum of the axial chromatic aberration at the telephoto end, it is necessary to reduce the secondary spectrum amount ΔS generated in the second lens group. It is necessary to select a glass material.

The condition of the expression (8) is defined in order to correct axial chromatic aberration at the telephoto end and achieve high optical performance. If the condition of the upper limit of the expression (8) is not satisfied, it is advantageous for correcting the secondary spectrum of the axial chromatic aberration at the telephoto end, but the refractive index of the convex lens constituting the second lens group becomes low, and The radius of curvature of the constituent convex lens is reduced. As a result, higher-order spherical aberration at the telephoto end increases, and it is difficult to achieve good optical performance. Conversely, if the lower limit of the expression (8) is not satisfied, the secondary spectrum of the axial chromatic aberration at the telephoto end increases, and it becomes difficult to satisfactorily correct the chromatic aberration at the telephoto end. More preferably, equation (8) is set as follows.
-2.80 × 10 ⁻³ <(θ2p−θ2n) / (ν2p−ν2n) <− 1.60 × 10 ⁻³
... (8a)

  As a further aspect of the zoom lens of the present invention, at least one of the surfaces of the second lens unit or the fourth lens unit has a lens provided with an aspheric surface. As can be seen from FIG. 21, the rays of the lens group that move during zooming change the height of the on-axis rays and the height of off-axis rays as the zooming from the wide-angle end to the telephoto end occurs. Therefore, by arranging a lens having an aspheric surface in the second lens group or the fourth lens group, it is possible to effectively suppress the fluctuation of spherical aberration, coma aberration, and field curvature caused by zooming. .

  Further, the imaging apparatus of the present invention is characterized by including the zoom lens of each embodiment and a solid-state imaging device having a predetermined effective imaging range for receiving an image formed by the zoom lens.

  Hereinafter, a specific configuration of the zoom lens according to the present invention will be described with reference to features of the lens configurations of Numerical Examples 1 to 10 corresponding to Embodiments 1 to 10.

  FIG. 1 is a sectional view of a zoom lens which is Embodiment 1 (Numerical Embodiment 1) of the present invention, when focusing on infinity at the wide-angle end. 2A shows a longitudinal aberration diagram at the wide-angle end, FIG. 2B shows a longitudinal aberration diagram at the focal length of 30 mm, and FIG. 2C shows a longitudinal aberration diagram at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. The value of the focal length is a value when a numerical example described later is expressed in mm. This is the same in the following numerical examples.

  In FIG. 1, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. Further, at the time of zooming from the wide-angle end to the telephoto end, the zoom lens includes a twenty-first lens unit L21, which is a sub lens unit of the second lens unit L2 having a positive refractive power for zooming, which moves toward the object side. I have. Further, at the time of zooming from the wide-angle end to the telephoto end, the zoom lens has a twenty-second lens unit L22, which is one sub-lens unit of the second lens unit L2 having a positive refractive power for zooming, which moves toward the object side. I have. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. Further, it has a forty-first lens unit L41 of a fourth lens unit L4 having a positive refractive power that moves on the optical axis in conjunction with the movement of the second lens unit and corrects an image plane variation caused by zooming. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming. SP is an aperture stop. I is an image plane, and when used as an imaging optical system of a broadcast television camera, video camera, or digital still camera, a solid-state imaging device (photoelectric conversion device) that receives an image formed by a zoom lens and performs photoelectric conversion. ) And the like. When used as an image pickup optical system of a film camera, an image formed by a zoom lens corresponds to a photosensitive film surface.

  In the longitudinal aberration diagram, a straight line and a broken line in spherical aberration are an e-line and a g-line, respectively. A broken line and a solid line in astigmatism are a meridional image plane and a sagittal image plane, respectively, and a one-dot chain line in chromatic aberration of magnification is a g line. ω is a half angle of view, and Fno is an F number. In the longitudinal aberration diagram, the spherical aberration is drawn on a scale of 0.4 mm, the astigmatism is drawn on a scale of 0.4 mm, the distortion is drawn on a scale of 5%, and the chromatic aberration of magnification is drawn on a scale of 0.05 mm. In each of the following embodiments, the wide-angle end and the telephoto end indicate zoom positions when the zooming lens group is located at both ends of a movable range on the optical axis with respect to the mechanism.

Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to sixth surfaces. The first lens unit L1 includes an eleventh lens unit L11 having a negative refractive power that does not move at the time of focusing, and a twelfth lens unit L12 having a negative refractive power that moves toward the object side when focusing from infinity to the closest side. Consists of The eleventh lens unit L11 includes a meniscus concave lens that is convex on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconcave lens and a biconvex lens. The twenty-first lens unit L21, which is one sub-lens unit of the second lens unit L2, corresponds to the seventh to ninth surfaces, and includes a cemented meniscus lens having a convex surface on the object side and a biconvex lens. The twenty-second lens unit L22, which is one of the sub-lenses in the second lens unit L2, corresponds to the tenth to eleventh surfaces and includes a biconvex lens. The tenth and eleventh surfaces have aspherical shapes, and mainly correct for variations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the twelfth to eighteenth surfaces, and includes an aperture stop, a cemented lens formed by a biconcave lens and a meniscus convex lens having a convex surface on the object side, a biconcave lens, and an auxiliary stop. The auxiliary aperture on the eighteenth surface keeps the open F-number constant at each zoom position by changing the aperture diameter according to zooming. The 41st lens unit L41 corresponds to the 19th to 21st surfaces and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a convex surface on the image side. The fifth lens unit L5 corresponds to the twenty-second surface to the twenty-ninth surface, and has a cemented lens of a concave meniscus lens having a convex surface on the object side and a concave meniscus lens having a convex surface on the object side, and a cemented lens of a concave meniscus lens having a convex surface on the object side and a convex meniscus lens having a convex image side. It consists of.

A first numerical embodiment corresponding to the first embodiment will be described. Not only in Numerical Embodiment 1, but in all numerical embodiments, i indicates the order of the surface (optical surface) from the object side, ri is the radius of curvature of the i-th surface from the object side, and di is the i-th surface from the object side. The distance (on the optical axis) between the i-th surface and the (i + 1) -th surface is shown. Further, ndi, νdi, and θgFi represent the refractive index, Abbe number, and partial dispersion ratio of the medium (optical member) between the i-th surface and the (i + 1) -th surface, and BF represents the back focus in air. ing. The aspherical shape has an X axis in the optical axis direction, an H axis in a direction perpendicular to the optical axis, a positive traveling direction of the light, R is a paraxial radius of curvature, k is a conical constant, and A4, A6, A8, A10, and A12 are When each is an aspheric coefficient, it is represented by the following equation. “E−Z” means “× 10 ^−Z ”.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (5) and the expressions (7) to (8), and achieves a shooting angle of view (angle of view) of 77.4 ° at the wide-angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved. Although it is essential that the zoom lens of the present invention satisfies the expressions (1) and (2), the expressions (3) and (8) may not be satisfied. However, if at least one of the expressions (3) to (8) is satisfied, a better effect can be obtained. This is the same for the other embodiments.

  FIG. 23 is a schematic diagram of an imaging device (television camera system) using the zoom lens of each embodiment as a photographic optical system. In FIG. 23, reference numeral 101 denotes a zoom lens according to any one of the first to tenth embodiments. Reference numeral 124 denotes a camera. The zoom lens 101 is detachable from the camera 124. Reference numeral 125 denotes an imaging device configured by attaching the zoom lens 101 to the camera 124. The zoom lens 101 has a first lens unit F, a zoom unit LZ, and a fifth lens unit R for imaging. The first lens group F includes a focusing lens group. The zoom unit LZ includes a second lens group that moves on the optical axis for zooming, a third lens group that does not move for zooming, and a fourth lens group that moves on the optical axis for zooming. ing. SP is an aperture stop. Reference numerals 114 and 115 denote driving mechanisms such as helicoids and cams for driving the first lens unit F and the zooming unit LZ in the optical axis direction. Reference numerals 116 to 118 denote motors (drive means) for electrically driving the drive mechanisms 114 and 115 and the aperture stop SP. Reference numerals 119 to 121 denote detectors such as encoders, potentiometers, and photosensors for detecting the positions of the first lens unit F and the zoom unit LZ on the optical axis and the aperture diameter of the aperture stop SP. In the camera 124, 109 is a glass block corresponding to an optical filter and a color separation optical system in the camera 124, and 110 is a solid-state image sensor (photoelectric conversion) such as a CCD sensor or a CMOS sensor that receives a subject image formed by the zoom lens 101. Element). Reference numerals 111 and 122 denote CPUs for controlling various driving of the camera 124 and the zoom lens 101.

  As described above, by applying the zoom lens of the present invention to a television camera or a cinema camera, an imaging device having high optical performance is realized.

  FIG. 3 is a cross-sectional view of a zoom lens that is Embodiment 2 (Numerical Embodiment 2) of the present invention when focusing on infinity at the wide-angle end. 4A shows a longitudinal aberration diagram at the wide-angle end, FIG. 4B shows a longitudinal aberration diagram at a focal length of 27 mm, and FIG. 4C shows a longitudinal aberration diagram at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 3, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. Further, there is provided a first lens unit L41 having a positive refractive power that moves nonlinearly on the optical axis in conjunction with the movement of the second lens unit and the third lens unit, and corrects image plane fluctuation caused by zooming. ing. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to fifth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move at the time of focusing and a twelfth lens unit having a negative refractive power which moves toward the object side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a meniscus concave lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconcave lens, and a cemented lens formed by a meniscus convex lens having a convex surface on the object side. The twenty-first lens unit L21, which is one sub-lens unit of the second lens unit L2, corresponds to the sixth to eighth surfaces, and includes a cemented lens of a concave meniscus lens having a convex surface on the object side and a biconvex lens. The twenty-second lens unit L22, which is one sub-lens group of the second lens unit L2, corresponds to the ninth to tenth surfaces and includes a biconvex lens. The ninth and tenth surfaces have an aspherical shape, and mainly correct for variations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the eleventh surface to the seventeenth surface, and includes an aperture stop, a cemented lens formed by a biconcave lens and a meniscus convex lens having a convex surface on the object side, a biconcave lens, and an auxiliary stop. The forty-first lens unit L41 corresponds to the eighteenth surface to the twentieth surface, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a convex surface on the image side. The fifth lens unit L5 corresponds to the twenty-first surface to the twenty-eighth surface, and includes a biconvex lens, a cemented lens of a biconvex lens and a biconcave lens, and a cemented lens of a biconvex lens and a biconcave lens.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. The present embodiment satisfies the expressions (1) to (5) and the expressions (7) to (8), and achieves a wide angle of view of 87.4 ° at the wide-angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 5 is a cross-sectional view of a zoom lens that is Embodiment 3 (Numerical Embodiment 3) of the present invention when focusing on infinity at the wide-angle end. 6A shows a longitudinal aberration diagram at the wide-angle end, FIG. 6B shows a longitudinal aberration diagram at the focal length of 36 mm, and FIG. 6C shows a longitudinal aberration diagram at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 5, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. In the present embodiment, the second lens group is composed of the 21st lens group. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. The zoom lens further includes a first lens unit L41 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L42 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to sixth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move at the time of focusing and a twelfth lens unit having a negative refractive power which moves toward the object side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a meniscus concave lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconcave lens and a biconvex lens. The twenty-first lens unit L21 corresponds to the seventh surface to the eleventh surface, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a concave surface on the object side, and a biconvex lens. The third lens unit L3 corresponds to the twelfth surface to the seventeenth surface, and includes an aperture stop, a cemented lens formed by a biconcave lens, a meniscus convex lens having a convex surface on the object side, and a biconcave lens. The 41st lens unit L41 corresponds to the 18th to 19th surfaces, and includes a biconvex lens. The eighteenth surface has an aspheric shape, and mainly corrects fluctuations in spherical aberration and image surface aberration caused by zooming. The 42nd lens unit L42 corresponds to the 20th to 22nd surfaces, and includes a cemented lens formed by a concave meniscus lens having a convex surface on the object side and a biconvex lens. The fifth lens unit L5 corresponds to the 23rd surface to the 25th surface, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a concave surface on the object side.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (5) and the expressions (7) to (8), and achieves a wide angle of view (angle of view) of 78.8 ° at the wide angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 7 is a cross-sectional view of a zoom lens that is Embodiment 4 (Numerical Embodiment 4) of the present invention when focusing on infinity at the wide-angle end. 8A shows a longitudinal aberration at the wide-angle end, FIG. 8B shows a longitudinal aberration at the focal length of 35 mm, and FIG. 8C shows a longitudinal aberration at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 7, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. Further, there is provided a first lens unit L41 having a positive refractive power that moves nonlinearly on the optical axis in conjunction with the movement of the second lens unit and the third lens unit, and corrects image plane fluctuation caused by zooming. ing. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to sixth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move at the time of focusing and a twelfth lens unit having a negative refractive power which moves toward the object side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a meniscus concave lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconcave lens and a biconvex lens. The twenty-first lens group L21, which is one sub-lens group of the second lens group L2, corresponds to the seventh to ninth surfaces, and includes a cemented lens of a biconvex lens and a meniscus concave lens having a convex image side. The twenty-second lens unit L22, which is one of the sub-lenses in the second lens unit L2, corresponds to the tenth to eleventh surfaces and includes a biconvex lens. The tenth surface has an aspherical shape, and mainly corrects fluctuations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the twelfth surface to the seventeenth surface, and includes an aperture stop, a cemented lens formed by a biconcave lens, a meniscus convex lens having a convex surface on the object side, and a biconcave lens. The 41st lens unit L41 corresponds to the 18th to 19th surfaces, and includes a biconvex lens. The eighteenth surface has an aspherical shape, and mainly corrects a change in spherical aberration due to zooming. The fifth lens unit L5 corresponds to the twentieth surface to the twenty-fifth surface, and includes a cemented lens of a biconvex lens and a concave meniscus lens having a convex surface on the image side, and a cemented lens of a biconvex lens and a concave meniscus lens having a convex surface on the image side.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (5) and the expressions (7) to (8), and achieves a wide angle of view of 83.8 ° at the wide-angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 9 is a sectional view of a zoom lens that is Embodiment 5 (Numerical Embodiment 5) of the present invention when focusing on infinity at the wide-angle end. 10A shows longitudinal aberrations at the wide-angle end, FIG. 10B shows longitudinal aberrations at the focal length of 25 mm, and FIG. 10C shows longitudinal aberrations at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 9, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. Further, there is provided a first lens unit L41 having a positive refractive power that moves nonlinearly on the optical axis in conjunction with the movement of the second lens unit and the third lens unit, and corrects image plane fluctuation caused by zooming. ing. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to tenth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move during focusing and a twelfth lens unit having a positive refractive power which moves toward the image side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a concave meniscus lens having a convex surface on the object side, a biconcave lens, and a convex meniscus lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconvex lens and a biconcave lens. The twenty-first lens unit L21, which is one sub-lens unit of the second lens unit L2, corresponds to the eleventh surface to the thirteenth surface, and includes a cemented meniscus lens having a convex surface on the object side and a biconvex lens. The twenty-second lens unit L22, which is one sub-lens group of the second lens unit L2, corresponds to the fourteenth surface to the fifteenth surface, and includes a biconvex lens. The fourteenth and fifteenth surfaces have aspherical shapes, and mainly correct for variations in spherical aberration, coma, and image plane aberration caused by zooming. The third lens unit L3 corresponds to the 16th to 21st surfaces, and includes an aperture stop, a cemented lens formed by a biconcave lens, a meniscus convex lens having a convex surface on the object side, and a biconcave lens. The forty-first lens unit L41 corresponds to the twenty-second surface to the twenty-fourth surface, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a convex surface on the image side. The fifth lens unit L5 corresponds to the 25th surface to the 31st surface, and includes a biconvex lens, a concave meniscus lens having a convex surface on the object side, and a cemented lens of a biconvex lens and a meniscus concave lens having a convex surface on the image side.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (6) and the expression (8), and achieves a shooting angle of view (angle of view) of 97.4 ° at the wide-angle end, which is a wide angle. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 11 is a sectional view of a zoom lens that is Embodiment 6 (Numerical Embodiment 6) of the present invention when focusing on infinity at the wide-angle end. 12A shows a longitudinal aberration diagram at the wide angle end, FIG. 12B shows a longitudinal aberration diagram at the focal length of 35 mm, and FIG. 12C shows a longitudinal aberration diagram at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 11, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. Further, the zoom lens includes a twenty-first lens unit L21 having a negative refractive power for moving during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. Further, there is provided a first lens unit L41 having a positive refractive power that moves nonlinearly on the optical axis in conjunction with the movement of the second lens unit and the third lens unit, and corrects image plane fluctuation caused by zooming. ing. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first surface to the second surface. The first lens unit L1 is constituted by a first unit having a negative refractive power that does not move during focusing. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The 21st lens unit L21, which is one sub lens unit of the second lens unit L2, corresponds to the third surface to the sixth surface, and includes a biconcave lens and a biconvex lens in order from the object side to the image side. The entire group moves to the object side when focusing from the infinity side to the close side. The twenty-second lens unit L22, which is one sub-lens unit of the second lens unit L2, corresponds to the seventh surface to the eleventh surface, and includes a cemented lens of a biconvex lens, a meniscus concave lens having a convex surface on the image side, and a biconvex lens. Is done. The tenth surface has an aspherical shape, and mainly corrects fluctuations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the twelfth surface to the seventeenth surface, and includes an aperture stop, a cemented lens formed by a biconcave lens and a meniscus convex lens having a convex surface on the object side, and a concave meniscus lens having a convex surface on the image side. The 41st lens unit L41 corresponds to the 18th to 19th surfaces, and includes a biconvex lens. The eighteenth surface has an aspherical shape, and mainly corrects a change in spherical aberration due to zooming. The fifth lens unit L5 corresponds to the twentieth surface to the twenty-fourth surface, and includes a cemented lens formed by a biconvex lens, a meniscus concave lens having a convex surface on the image side, and a biconvex lens.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (5) and the expression (8), and achieves a wide angle of view (angle of view) of 82.0 ° at the wide angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 13 is a sectional view of a zoom lens according to a seventh embodiment (numerical embodiment 7) of the present invention when focusing on infinity at the wide-angle end. 14A shows longitudinal aberrations at the wide-angle end, FIG. 14B shows longitudinal aberrations at a focal length of 27 mm, and FIG. 14C shows longitudinal aberrations at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 13, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. The zoom lens further includes a first lens unit L41 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L42 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to sixth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move at the time of focusing and a twelfth lens unit having a negative refractive power which moves toward the object side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a meniscus concave lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconcave lens and a biconvex lens. The twenty-first lens group L21, which is one sub-lens group of the second lens group L2, corresponds to the seventh to ninth surfaces, and includes a cemented lens of a biconvex lens and a concave meniscus lens having a convex surface on the object side. The twenty-second lens group L22, which is one sub-lens group of the second lens group L2, corresponds to the tenth surface to the eleventh surface, and includes a biconvex lens. The tenth surface has an aspherical shape, and mainly corrects fluctuations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the twelfth surface to the seventeenth surface, and includes an aperture stop, a cemented lens formed by a biconcave lens, a meniscus convex lens having a convex surface on the object side, and a biconcave lens. The 41st lens unit L41 corresponds to the 18th to 19th surfaces, and includes a biconvex lens. The eighteenth surface has an aspheric shape, and mainly corrects fluctuations in spherical aberration and image surface aberration caused by zooming. The 42nd lens unit L42 corresponds to the 20th to 22nd surfaces, and includes a cemented lens formed by a convex meniscus lens having a convex image side and a concave meniscus lens having a convex image side. The fifth lens unit L5 corresponds to the 23rd surface to the 25th surface, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a concave surface on the object side.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. The present embodiment satisfies the expressions (1) to (5) and the expressions (7) to (8), and achieves a wide angle of view of 87.4 ° at the wide-angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 15 is a cross-sectional view of a zoom lens that is Embodiment 8 (Numerical Embodiment 8) of the present invention when focusing on infinity at the wide-angle end. 16A shows a longitudinal aberration diagram at the wide angle end, FIG. 16B shows a longitudinal aberration diagram at the focal length of 30 mm, and FIG. 16C shows a longitudinal aberration diagram at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 16, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. The zoom lens further includes a first lens unit L41 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L42 having a negative refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to twelfth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move during focusing and a twelfth lens unit having a positive refractive power which moves toward the image side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a concave meniscus lens having a convex surface on the object side, a concave meniscus lens having a convex surface on the object side, a biconcave lens, and a convex meniscus lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a meniscus convex lens having a convex surface on the image side and a biconcave lens. The twenty-first lens unit L21, which is one of the sub-lenses in the second lens unit L2, corresponds to the thirteenth surface to the fifteenth surface, and includes a cemented lens of a concave meniscus lens having a convex surface on the object side and a biconvex lens. The twenty-second lens unit L22, which is one sub-lens unit of the second lens unit L2, corresponds to the sixteenth surface to the seventeenth surface, and includes a biconvex lens. The sixteenth and seventeenth surfaces have an aspherical shape, and mainly correct for variations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the eighteenth surface to the twenty-third surface, and includes an aperture stop, a cemented lens of a biconcave lens and a biconvex lens, and a biconcave lens. The 41st lens unit L41 corresponds to the 24th to 27th surfaces, and includes a meniscus convex lens having a convex surface on the image side and a biconvex lens. The 42nd lens unit L42 corresponds to the 28th surface to the 30th surface, and includes a cemented lens formed by a biconvex lens and a biconcave lens. The fifth lens unit L5 corresponds to the 31st to 35th surfaces, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a concave surface on the object side, and a biconvex lens.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (6) and the expression (8), and achieves a wide angle of view of 89.2 ° at the wide-angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 17 is a sectional view of a zoom lens according to a ninth embodiment (numerical embodiment 9) of the present invention when focusing on infinity at the wide-angle end. In FIG. 18, (a) shows the longitudinal aberration at the wide angle end, (b) shows the focal length of 30 mm, and (c) shows the longitudinal aberration at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 17, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. The zoom lens further includes a first lens unit L41 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L42 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to sixth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move at the time of focusing and a twelfth lens unit having a negative refractive power which moves toward the object side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a meniscus concave lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconcave lens and a biconvex lens. The twenty-first lens unit L21, which is one sub lens unit of the second lens unit L2, corresponds to the seventh to ninth surfaces, and includes a cemented lens of a biconvex lens and a concave meniscus lens having a concave object side. The twenty-second lens group L22, which is one sub-lens group of the second lens group L2, corresponds to the tenth surface to the eleventh surface, and includes a biconvex lens. The tenth surface has an aspherical shape, and mainly corrects fluctuations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the twelfth surface to the seventeenth surface, and includes an aperture stop, a cemented lens formed by a biconcave lens, a meniscus convex lens having a convex surface on the object side, and a biconcave lens. The 41st lens unit L41 corresponds to the 18th to 19th surfaces, and includes a biconvex lens. The 42nd lens unit L42 corresponds to the 20th to 22nd surfaces, and includes a cemented lens formed by a convex meniscus lens having a convex image side and a concave meniscus lens having a convex image side. The fifth lens unit L5 corresponds to the 23rd surface to the 25th surface, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a concave surface on the object side.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. This embodiment satisfies the expressions (1) to (5) and the expressions (7) to (8), and achieves a wide angle of view of 85.6 ° at the wide-angle end. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

  FIG. 19 is a cross-sectional view of a zoom lens that is Embodiment 10 (Numerical Embodiment 10) of the present invention when focusing on infinity at the wide-angle end. 20A shows a longitudinal aberration diagram at the wide-angle end, FIG. 20B shows a longitudinal aberration diagram at a focal length of 17 mm, and FIG. 20C shows a longitudinal aberration diagram at the telephoto end. Each aberration diagram is a longitudinal aberration diagram when focusing on infinity. In FIG. 19, a first lens unit L1 having a negative refractive power for focusing is provided in order from the object side to the image side. The zoom lens further includes a twenty-first lens unit L21 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L22 having a positive refractive power for zooming, which moves toward the object side during zooming from the wide-angle end to the telephoto end. The twenty-first lens unit U21 and the twenty-second lens unit U22 move on different trajectories during zooming. The zoom lens further includes a negative third lens unit L3 that does not move for zooming. The zoom lens further includes a first lens unit L41 having a positive refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a second lens unit L42 having a negative refractive power for zooming, which moves during zooming from the wide-angle end to the telephoto end. The zoom lens further includes a fifth lens unit L5 having a positive refractive power and having an imaging function that does not move for zooming.

  Next, the first lens unit L1 in the present embodiment will be described. The first lens unit L1 corresponds to the first to twelfth surfaces. The first lens unit L1 includes an eleventh lens unit having a negative refractive power which does not move during focusing and a twelfth lens unit having a positive refractive power which moves toward the image side when focusing from infinity to the closest side. Is done. The eleventh lens unit L11 includes a concave meniscus lens having a convex surface on the object side, a concave meniscus lens having a convex surface on the object side, a biconcave lens, and a convex meniscus lens having a convex surface on the object side. The first surface has an aspherical shape and mainly corrects distortion and curvature of field on the wide-angle side. The twelfth lens unit L12 includes, in order from the object side to the image side, a biconvex lens and a meniscus concave lens having a concave surface on the image side. The twenty-first lens unit L21, which is one of the sub-lenses in the second lens unit L2, corresponds to the thirteenth surface to the fifteenth surface, and includes a cemented lens of a concave meniscus lens having a convex surface on the object side and a biconvex lens. The twenty-second lens unit L22, which is one sub-lens unit of the second lens unit L2, corresponds to the sixteenth surface to the seventeenth surface, and includes a biconvex lens. The sixteenth and seventeenth surfaces have an aspherical shape, and mainly correct for variations in spherical aberration and image surface aberration caused by zooming. The third lens unit L3 corresponds to the eighteenth surface to the twenty-third surface, and includes an aperture stop, a cemented lens of a biconcave lens and a biconvex lens, and a biconcave lens. The 41st lens unit L41 corresponds to the 24th to 27th surfaces, and includes a meniscus convex lens having a convex surface on the image side and a biconvex lens. The 42nd lens unit L42 corresponds to the 28th surface to the 30th surface, and includes a cemented lens formed by a biconvex lens and a biconcave lens. The fifth lens unit L5 corresponds to surfaces 31 to 33, and includes a cemented lens formed by a biconvex lens and a meniscus concave lens having a concave surface on the object side.

  Table 1 shows values corresponding to the respective conditional expressions according to the present embodiment. The present embodiment satisfies the expressions (1) to (6) and the expression (8), and achieves a shooting angle of view (angle of view) of 114.6 ° at the wide angle end, which is a wide angle. In addition, a zoom lens having high optical performance in which various aberrations are satisfactorily corrected in the entire zoom range is achieved.

As described above, the preferred embodiments of the present invention have been described, but the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist.

(Numerical Example 1)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 * 81.541 2.00 1.516330 64.14 0.5352 66.0
2 27.668 29.11 51.2
3 -106.430 2.21 1.800000 29.84 0.6017 45.1
4 61.512 3.30 42.5
5 69.810 4.46 1.846660 23.78 0.6205 42.6
6 1314.349 (variable) 42.3

7 62.618 1.50 1.800000 29.84 0.6017 33.9
8 34.394 7.04 1.563839 60.67 0.5402 33.9
9 -104.184 (variable) 34.1

10 * 77.774 5.13 1.438750 94.93 0.5343 34.9
11 * -75.732 (variable) 34.8

12 0.000 1.84 17.9
13 -43.859 1.00 1.603112 60.64 0.5414 17.6
14 26.489 2.68 1.784696 26.29 0.6135 17.5
15 522.448 1.05 17.3
16 -70.742 1.00 1.696797 55.53 0.5433 17.3
17 65.636 2.64 17.3
18 0.000 (variable) 17.7

19 81.328 8.34 1.537750 74.70 0.5393 22.5
20 -19.512 1.00 1.567322 42.80 0.5730 23.8
21 -44.224 (variable) 25.0

22 52.647 1.00 1.517417 52.43 0.5564 25.9
23 22.309 5.93 1.677900 55.34 0.5472 25.9
24 -316.191 0.47 25.6
25 61.102 1.42 1.762001 40.10 0.5765 25.0
26 21.416 3.78 23.7
27 23.336 8.40 1.438750 94.93 0.5343 25.3
28 -28.213 1.00 1.834807 42.71 0.5642 25.0
29 -201.209 BF 25.4
Image plane ∞

Aspheric surface first surface
K = 3.48534e + 000 A 4 = 1.71640e-006 A 6 = 8.41226e-011 A 8 = -2.56285e-013 A10 = 2.79463e-016 A12 = -4.19689e-020

10th page
K = -7.08167e + 000 A 4 = -6.61607e-007 A 6 = 2.90014e-009 A 8 = -4.66899e-011 A10 = 2.03286e-013 A12 = -3.43592e-016

Eleventh
K = 1.64127e + 000 A 4 = -1.04152e-006 A 6 = 2.33336e-009 A 8 = -3.26813e-011 A10 = 1.53684e-013 A12 = -2.80962e-016

Various data Zoom ratio 4.32
Wide-angle medium telephoto focal length 18.50 30.00 80.00
F-number 4.00 4.00 4.00
Half angle of view 38.66 26.26 10.48
Image height 14.80 14.80 14.80
Total lens length 217.12 217.12 217.12
BF 43.55 43.55 43.55

d 6 58.51 29.34 1.77
d 9 0.64 16.69 5.01
d11 0.40 13.52 52.78
d18 17.21 15.02 0.23
d21 0.50 2.68 17.48

Zoom lens group data group Start surface Focal length
1 1 -43.50
2 7 89.33
3 10 88.13
4 12 -33.91
5 19 57.16
6 22 135.77

(Numerical example 2)
Unit: mm

Surface number rd nd vd θgF Effective diameter
1 * 87.610 2.00 1.618000 63.33 0.5441 67.6
2 25.663 29.11 49.3
3 -64.303 1.50 1.688931 31.07 0.6003 43.6
4 38.210 8.20 1.761821 26.52 0.6135 40.6
5 7032.775 (variable) 39.9

6 71.196 1.50 1.800000 29.84 0.6017 34.8
7 40.515 9.25 1.516330 64.14 0.5352 35.0
8 -92.106 (variable) 35.9

9 * 52.192 8.27 1.438750 94.93 0.5343 38.6
10 * -62.342 (variable) 38.5

11 0.000 2.25 22.0
12 -44.095 1.00 1.677900 55.34 0.5472 21.6
13 25.191 3.21 1.805181 25.42 0.6161 21.5
14 172.645 1.20 21.4
15 -95.195 1.00 1.563839 60.67 0.5402 21.3
16 71.541 2.64 21.4
17 0.000 (variable) 21.8

18 87.917 6.68 1.496999 81.54 0.5374 24.6
19 -22.325 1.00 1.567322 42.80 0.5730 25.3
20 -48.853 (variable) 26.6

21 137.912 3.68 1.696797 55.53 0.5433 28.5
22 -66.880 0.47 28.7
23 37.293 5.44 1.496999 81.54 0.5374 28.1
24 -81.948 1.42 1.772499 49.60 0.5521 27.5
25 31.067 4.00 26.2
26 37.971 7.07 1.438750 94.93 0.5343 27.3
27 -31.802 1.00 1.698947 30.13 0.6029 27.3
28 -126.994 BF 27.7
Image plane ∞

Aspheric surface first surface
K = 4.43141e + 000 A 4 = 2.11208e-006 A 6 = 4.04346e-010 A 8 = -1.01973e-012 A10 = 9.65526e-016 A12 = -2.57329e-019

9th page
K = -2.70928e + 000 A 4 = 7.09063e-007 A 6 = 3.32149e-009 A 8 = -4.15992e-011 A10 = 1.59397e-013 A12 = -2.27454e-016

10th page
K = -1.00005e + 000 A 4 = 2.18074e-007 A 6 = 2.07516e-009 A 8 = -3.06266e-011 A10 = 1.23962e-013 A12 = -1.87509e-016

Various data Zoom ratio 3.00
Wide-angle medium telephoto focal length 15.50 27.00 46.50
F-number 2.70 2.70 2.70
Half angle of view 43.68 28.73 17.65
Image height 14.80 14.80 14.80
Total lens length 215.06 215.06 215.06
BF 40.00 40.00 40.00

d 5 54.69 22.82 8.77
d 8 0.62 15.33 9.45
d10 0.00 17.17 37.11
d17 17.47 15.00 6.13
d20 0.39 2.86 11.73

Zoom lens group data group Start surface Focal length
1 1 -33.20
2 6 103.00
3 9 66.04
4 11 -33.80
5 18 72.00
6 21 85.36

(Numerical example 3)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 100.823 2.70 1.537750 74.70 0.5393 64.4
2 27.752 31.15 49.4
3 -150.390 1.50 1.729157 54.68 0.5444 44.7
4 57.570 0.72 41.7
5 56.104 8.21 1.658441 50.88 0.5561 41.6
6 -1072.608 (variable) 40.0

7 238.625 5.88 1.620411 60.29 0.5426 22.8
8 -33.607 1.35 1.761821 26.52 0.6135 23.3
9 -61.887 0.20 23.7
10 47.633 4.36 1.438750 94.93 0.5343 23.9
11 -169.496 (variable) 23.5

12 0.000 1.71 15.9
13 -58.082 0.80 1.696797 55.53 0.5433 15.6
14 29.770 1.79 1.959060 17.47 0.6599 15.5
15 53.667 1.95 15.4
16 -24.477 1.20 1.516330 64.14 0.5352 15.4
17 40.606 (variable) 16.3

18 32.752 6.62 1.496999 81.54 0.5374 18.2
19 -32.730 (variable) 20.2

20 76.090 0.97 1.785896 44.20 0.5631 28.3
21 38.996 9.33 1.496999 81.54 0.5374 28.5
22 -36.584 (variable) 29.4

23 38.989 10.10 1.496999 81.54 0.5374 29.1
24 -26.754 0.90 1.910820 35.25 0.5824 28.1
25 -399.882 BF 28.3
Image plane ∞

Aspheric surface first surface
K = 2.99107e + 000 A 4 = 2.16207e-006 A 6 = 4.17797e-010 A 8 = -8.79919e-013 A10 = 1.00331e-015 A12 = -2.48813e-019

18th page
K = 0.00000e + 000 A 4 = -1.25438e-005 A 6 = 3.43408e-008 A 8 = -5.64880e-010 A10 = 4.07328e-012 A12 = -1.08661e-014

Various data Zoom ratio 2.67
Wide-angle medium telephoto focal length 18.00 36.00 48.00
F-number 2.94 3.21 3.50
Half angle of view 39.43 22.35 17.14
Image height 14.80 14.80 14.80
Total lens length 187.91 187.91 187.91
BF 40.95 40.95 40.95

d 6 32.02 11.11 3.37
d11 1.32 22.23 29.97
d17 6.95 3.59 2.42
d19 14.74 9.74 4.14
d22 0.49 8.85 15.61
d25 40.95 40.95 40.95

Zoom lens group data group Start surface Focal length
1 1 -47.91
2 7 45.08
3 12 -17.49
4 18 33.98
5 20 61.56
6 23 1705.24

(Numerical example 4)
Unit: mm

Surface number rd nd vd θgF Effective diameter
1 * 158.682 2.70 1.487490 70.23 0.5300 57.0
2 21.477 23.52 40.1
3 -65.332 1.50 1.729157 54.68 0.5444 36.0
4 116.976 3.57 34.5
5 111.421 5.23 1.696797 55.53 0.5433 33.5
6 -332.807 (variable) 32.5

7 67.228 6.45 1.618000 63.33 0.5441 24.7
8 -38.833 1.35 1.800000 29.84 0.6017 24.6
9 -121.222 (variable) 25.0

10 * 68.223 5.44 1.496999 81.54 0.5374 25.4
11 -49.716 (variable) 25.3

12 0.000 1.67 14.2
13 -80.222 0.80 1.729157 54.68 0.5444 13.8
14 19.087 2.46 1.808095 22.76 0.6307 13.6
15 120.749 4.52 13.4
16 -26.029 0.80 1.804000 46.58 0.5572 12.9
17 403.345 (variable) 13.1

18 * 82.237 6.17 1.496999 81.54 0.5374 20.9
19 -25.255 (variable) 22.4

20 550.937 5.26 1.595220 67.74 0.5442 23.5
21 -22.821 0.90 1.953750 32.32 0.5898 23.8
22 -45.694 0.38 24.7
23 70.482 5.99 1.496999 81.54 0.5374 25.2
24 -25.120 0.90 1.882997 40.76 0.5667 25.1
25 -69.445 BF 25.8
Image plane ∞

Aspheric surface first surface
K = 2.99107e + 000 A 4 = 7.33965e-006 A 6 = -4.16481e-009 A 8 = 6.68382e-012 A10 = -5.59885e-015 A12 = 2.90870e-018

10th page
K = 0.00000e + 000 A 4 = -4.67248e-006 A 6 = 4.65010e-009 A 8 = -4.88533e-011 A10 = 1.99102e-013 A12 = -3.03795e-016

18th page
K = 0.00000e + 000 A 4 = 1.67124e-006 A 6 = 7.12145e-009 A 8 = -7.61635e-011 A10 = 9.72722e-013 A12 = -4.78927e-015

Various data Zoom ratio 3.03
Wide-angle medium telephoto focal length 16.50 35.00 50.00
F-number 3.26 3.58 4.00
Half angle of view 41.89 22.92 16.49
Image height 14.80 14.80 14.80
Total lens length 181.46 181.46 181.46
BF 49.44 49.44 49.44

d 6 36.41 8.50 4.13
d 9 1.49 7.21 1.50
d11 1.96 24.15 34.23
d17 11.55 8.42 4.61
d19 0.99 4.13 7.93

Zoom lens group data group Start surface Focal length
1 1 -32.12
2 7 90.93
3 10 58.59
4 12 -21.41
5 18 39.52
6 20 92.47

(Numerical example 5)
Unit: mm

Surface number rd nd vd θgF Effective diameter
1 * 78.308 2.80 1.696797 55.53 0.5433 69.9
2 27.219 24.45 51.2
3 -79.342 1.89 1.834807 42.71 0.5642 45.7
4 44.444 6.23 42.2
5 59.865 5.39 1.603420 38.03 0.5835 43.5
6 1100.405 1.12 43.4
7 223.596 6.06 1.670029 47.23 0.5627 43.0
8 -66.545 0.98 42.7
9 -16548.304 1.68 1.850259 32.27 0.5929 38.7
10 94.834 (variable) 37.1

11 60.076 1.50 1.800000 29.84 0.6017 32.1
12 36.337 8.61 1.516330 64.14 0.5352 32.1
13 -98.591 (variable) 32.7

14 * 58.909 5.63 1.438750 94.93 0.5343 34.1
15 * -76.762 (variable) 34.0

16 0.000 2.22 20.0
17 -50.435 1.00 1.696797 55.53 0.5433 19.5
18 24.837 3.23 1.805181 25.42 0.6161 19.4
19 1307.515 1.21 19.3
20 -43.003 1.00 1.516330 64.14 0.5352 19.2
21 73.586 (variable) 19.4

22 138.037 6.82 1.438750 94.93 0.5343 20.8
23 -22.944 0.80 1.570989 50.80 0.5588 22.4
24 -31.987 (variable) 23.2

25 31.163 5.92 1.438750 94.93 0.5343 28.8
26 -114.255 0.47 28.7
27 42.475 0.80 1.754998 52.32 0.5476 27.8
28 22.665 1.50 26.6
29 25.682 8.72 1.438750 94.93 0.5343 26.9
30 -27.612 0.80 1.755199 27.51 0.6103 26.7
31 -334.957 BF 26.9
Image plane ∞

Aspheric surface first surface
K = 3.32755e + 000 A 4 = 1.67794e-006 A 6 = 5.55468e-010 A 8 = -1.45838e-012 A10 = 1.26290e-015 A12 = -3.79497e-019

Side 14
K = -4.14953e-001 A 4 = -1.25538e-006 A 6 = 5.56134e-009 A 8 = -5.52273e-011 A10 = 2.62913e-013 A12 = -4.61916e-016

15th page
K = -4.09299e-001 A 4 = -5.64796e-007 A 6 = 3.69251e-009 A 8 = -3.42012e-011 A10 = 1.85309e-013 A12 = -3.60826e-016

Various data Zoom ratio 3.00
Wide-angle medium telephoto focal length 13.00 25.00 39.00
F-number 2.79 2.86 3.00
Half angle of view 48.70 30.63 20.78
Image height 14.80 14.80 14.80
Total lens length 220.00 220.00 220.00
BF 40.00 40.00 40.00

d10 53.87 19.30 7.28
d13 0.50 15.30 10.60
d15 0.47 20.23 36.95
d21 17.06 12.48 5.24
d24 7.29 11.87 19.11

Zoom lens group data group Start surface Focal length
1 1 -30.26
2 11 94.22
3 14 76.75
4 16 -33.52
5 22 66.10
6 25 84.40

(Numerical example 6)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 105.156 2.70 1.496999 81.54 0.5374 63.3
2 24.557 (variable) 46.2

3 -79.541 1.50 1.740999 52.64 0.5467 38.7
4 100.713 3.59 36.8
5 100.339 3.68 1.698947 30.13 0.6029 35.7
6 -1203.013 (variable) 35.0

7 62.920 7.59 1.618000 63.33 0.5441 28.3
8 -42.666 1.35 1.854780 24.80 0.6122 28.0
9 -108.523 0.20 28.0
10 73.558 7.56 1.496999 81.54 0.5374 27.5
11 -56.908 (variable) 26.4

12 0.000 2.90 12.7
13 -55.809 0.80 1.658441 50.88 0.5561 12.0
14 15.148 2.12 1.922860 18.90 0.6495 11.8
15 41.652 3.18 11.5
16 -19.790 1.50 1.800000 29.84 0.6017 11.3
17 -261.806 (variable) 11.8

18 192.872 3.54 1.496999 81.54 0.5374 15.8
19 -18.940 (variable) 16.7

20 160.222 6.54 1.595220 67.74 0.5442 18.4
21 -13.803 0.90 1.910820 35.25 0.5824 19.1
22 -37.294 0.20 20.8
23 146.359 4.47 1.595220 67.74 0.5442 21.8
24 -64.006 BF 22.5
Image plane ∞

Aspheric surface first surface
K = 2.99107e + 000 A 4 = 4.02739e-006 A 6 = -8.89153e-010 A 8 = 1.66414e-012 A10 = -1.31092e-015 A12 = 8.65049e-019

10th page
K = 0.00000e + 000 A 4 = -3.86204e-006 A 6 = 2.47475e-009 A 8 = -2.42565e-011 A10 = 9.35867e-014 A12 = -1.36600e-016

18th page
K = 0.00000e + 000 A 4 = 6.13749e-006 A 6 = 2.62274e-008 A 8 = 8.14687e-010 A10 = -1.19700e-011 A12 = 5.17898e-014

Various data Zoom ratio 3.24
Wide-angle medium telephoto focal length 17.00 35.00 55.00
F-number 3.44 3.75 4.00
Half angle of view 41.04 22.92 15.06
Image height 14.80 14.80 14.80
Total lens length 174.07 174.07 174.07
BF 45.95 45.95 45.95

d 2 29.28 36.15 26.78
d 6 36.41 7.33 1.70
d11 1.98 24.19 39.18
d17 5.15 2.65 0.57
d19 1.00 3.50 5.58
d24 45.95 45.95 45.95

Zoom lens group data group Start surface Focal length
1 1 -65.00
2 3 -115.33
3 7 38.59
4 12 -18.00
5 18 34.79
6 20 54.27

(Numerical example 7)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 139.603 2.70 1.496999 81.54 0.5374 60.4
2 22.128 23.73 42.0
3 -69.393 1.50 1.729157 54.68 0.5444 37.2
4 84.529 3.44 35.3
5 80.615 5.91 1.651597 58.55 0.5426 34.4
6 -3630.207 (variable) 33.1

7 163.620 7.50 1.639300 44.87 0.5684 31.3
8 -31.897 1.35 1.805181 25.42 0.6161 31.9
9 -68.026 (variable) 33.1

10 48.822 8.18 1.438750 94.93 0.5343 34.5
11 -52.537 (variable) 34.4

12 0.000 2.25 19.4
13 -89.826 0.80 1.834807 42.73 0.5648 18.7
14 19.759 3.51 1.846660 23.78 0.6205 18.3
15 270.773 3.92 18.2
16 -24.598 1.20 1.517417 52.43 0.5564 17.8
17 112.189 (variable) 18.4

18 200.164 5.93 1.438750 94.93 0.5343 19.1
19 -27.985 (variable) 21.2

20 -669.709 5.82 1.595220 67.74 0.5442 25.9
21 -25.307 0.90 2.003300 28.27 0.5980 26.6
22 -39.511 (variable) 27.7

23 65.278 6.98 1.595220 67.74 0.5442 29.0
24 -31.268 0.90 1.953750 32.32 0.5898 29.0
25 -80.489 BF 29.5
Image plane ∞

Aspheric surface first surface
K = 2.99107e + 000 A 4 = 6.19159e-006 A 6 = -3.22667e-009 A 8 = 5.52229e-012 A10 = -4.81977e-015 A12 = 2.37317e-018

10th page
K = 0.00000e + 000 A 4 = -3.88179e-006 A 6 = 6.19439e-009 A 8 = -4.66883e-011 A10 = 1.38796e-013 A12 = -1.53199e-016

18th page
K = 0.00000e + 000 A 4 = 2.80480e-006 A 6 = -3.17920e-008 A 8 = 6.38976e-010 A10 = -5.01093e-012 A12 = 1.41630e-014

Various data Zoom ratio 2.97
Wide-angle medium telephoto focal length 15.50 27.00 46.00
F-number 2.54 2.65 2.80
Half angle of view 43.68 28.73 17.84
Image height 14.80 14.80 14.80
Total lens length 186.31 186.31 186.31
BF 42.55 42.55 42.55

d 6 36.83 11.75 2.35
d 9 1.44 10.29 1.46
d11 2.40 18.62 36.85
d17 8.65 6.79 2.17
d19 7.16 3.71 1.78
d22 0.77 6.08 12.63
d25 42.55 42.55 42.55

Zoom lens group data group Start surface Focal length
1 1 -30.13
2 7 95.80
3 10 58.99
4 12 -25.40
5 18 56.27
6 20 116.71
7 23 105.68

(Numerical example 8)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 56.472 2.80 1.651597 58.55 0.5426 54.0
2 28.188 6.20 45.0
3 32.615 2.00 1.729157 54.68 0.5444 41.1
4 21.980 13.32 35.2
5 -49.732 1.80 1.496999 81.54 0.5374 33.4
6 37.332 1.31 30.4
7 51.024 4.83 1.647689 33.79 0.5939 30.4
8 117.338 1.81 29.3
9 -272.351 3.93 1.516330 64.14 0.5352 29.1
10 -43.468 2.50 28.8
11 -528.451 1.68 1.922860 18.90 0.6495 25.1
12 241.848 (variable) 24.4

13 45.558 1.50 2.000690 25.46 0.6133 27.4
14 33.237 5.25 1.595220 67.74 0.5442 27.2
15 -106.481 (variable) 27.4

16 40.571 5.55 1.496999 81.54 0.5374 27.7
17 -69.990 (variable) 27.6

18 0.000 3.00 16.9
19 -79.784 1.00 1.882997 40.76 0.5667 15.7
20 15.234 3.46 1.808095 22.76 0.6307 15.1
21 -686.219 1.16 15.0
22 -35.503 1.00 1.816000 46.62 0.5568 14.9
23 60.738 (variable) 15.0

24 -187.450 4.00 1.537750 74.70 0.5393 25.4
25 -30.075 0.20 26.4
26 33.121 6.32 1.438750 94.93 0.5343 31.2
27 -215.883 (variable) 31.4

28 66.857 3.35 1.922860 18.90 0.6495 31.5
29 -2017.462 1.00 2.000690 25.46 0.6133 31.3
30 29.686 (variable) 30.2

31 48.297 8.50 1.729157 54.68 0.5444 31.0
32 -33.333 0.80 2.000690 25.46 0.6133 31.4
33 -118.506 0.20 32.5
34 114.930 5.50 1.537750 74.70 0.5393 33.4
35 -67.536 BF 33.7
Image plane ∞

Aspheric surface first surface
K = 2.25376e + 000 A 4 = 2.38111e-006 A 6 = -5.36706e-010 A 8 = -1.36021e-012 A10 = 2.70681e-015 A12 = -1.78443e-018

16th page
K = -8.03251e-001 A 4 = -4.09302e-006 A 6 = 1.86617e-008 A 8 = -5.14357e-010 A10 = 3.51384e-012 A12 = -1.06379e-014

17th
K = 4.88557e-001 A 4 = -4.09768e-006 A 6 = -6.59431e-010 A 8 = -2.19670e-010 A10 = 1.82277e-012 A12 = -6.89510e-015

Various data Zoom ratio 3.00
Wide-angle medium telephoto focal length 15.00 30.00 45.00
F-number 2.41 2.90 3.50
Half angle of view 44.62 26.26 18.21
Image height 14.80 14.80 14.80
Total lens length 178.97 178.97 178.97
BF 41.00 41.00 41.00

d12 24.52 8.68 4.72
d15 0.50 3.15 0.50
d17 0.40 13.59 20.20
d23 14.65 8.41 2.27
d27 1.59 6.24 11.64
d30 2.36 3.95 4.68
d35 41.00 41.00 41.00

Zoom lens group data group Start surface Focal length
1 1 -27.42
2 13 65.39
3 16 52.40
4 18 -18.70
5 24 32.98
6 28 -52.56
7 31 37.85

(Numerical example 9)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 140.746 2.70 1.487490 70.23 0.5300 60.1
2 21.653 27.58 41.5
3 -61.487 1.50 1.719995 50.23 0.5521 33.7
4 82.175 2.30 32.1
5 76.776 5.80 1.651597 58.55 0.5426 31.5
6 -886.071 (variable) 30.3

7 152.802 7.08 1.613397 44.30 0.5633 24.0
8 -30.721 1.35 1.805181 25.42 0.6161 24.0
9 -69.806 (variable) 24.3

10 51.136 6.23 1.496999 81.54 0.5374 25.2
11 -49.958 (variable) 25.1

12 0.000 1.70 13.8
13 -45.913 0.80 1.834807 42.73 0.5648 13.4
14 14.211 4.64 1.846660 23.78 0.6205 13.4
15 532.716 4.79 13.3
16 -17.516 1.20 1.517417 52.43 0.5564 13.2
17 5082.028 (variable) 13.8

18 261.670 2.95 1.595220 67.74 0.5442 14.0
19 -23.638 (variable) 15.0

20 -110.686 3.77 1.595220 67.74 0.5442 15.9
21 -16.345 0.90 2.003300 28.27 0.5980 16.5
22 -21.793 (variable) 17.2

23 126.887 4.76 1.595220 67.74 0.5442 17.7
24 -19.855 0.90 1.953750 32.32 0.5898 17.8
25 -77.053 BF 18.4
Image plane ∞

Aspheric surface first surface
K = 2.99107e + 000 A 4 = 6.86067e-006 A 6 = -4.69819e-009 A 8 = 8.70648e-012 A10 = -8.07592e-015 A12 = 3.85102e-018

10th page
K = 0.00000e + 000 A 4 = -4.23189e-006 A 6 = 5.49762e-009 A 8 = -5.93754e-011 A10 = 2.58567e-013 A12 = -4.29357e-016

Various data Zoom ratio 3.00
Wide-angle Medium telephoto focal length 16.00 30.00 48.00
F-number 3.75 3.82 4.00
Half angle of view 42.77 26.26 17.14
Image height 14.80 14.80 14.80
Total lens length 176.48 176.48 176.48
BF 48.84 48.84 48.84

d 6 36.52 8.57 1.79
d 9 1.45 10.25 1.74
d11 3.34 22.49 37.78
d17 4.04 2.99 0.54
d19 0.93 1.07 0.82
d22 0.41 1.31 4.02
d25 48.84 48.84 48.84

Zoom lens group data group Start surface Focal length
1 1 -28.62
2 7 108.40
3 10 51.76
4 12 -18.92
5 18 36.44
6 20 60.28
7 23 -1031.32

(Numerical example 10)
Unit: mm

Surface data Surface number rd nd vd θgF Effective diameter
1 68.920 2.80 1.696797 55.53 0.5433 74.0
2 27.500 19.53 54.2
3 59.092 1.89 1.882997 40.76 0.5667 48.8
4 22.937 13.21 38.1
5 -69.447 1.00 1.496999 81.54 0.5374 37.7
6 43.559 7.71 35.7
7 52.134 5.68 1.548141 45.79 0.5685 36.1
8 233.916 1.16 35.4
9 21674.176 5.22 1.517417 52.43 0.5564 35.3
10 -42.786 1.50 35.1
11 2579.545 1.68 1.953750 32.32 0.5898 30.7
12 105.490 (variable) 29.6

13 44.612 1.50 2.000690 25.46 0.6133 31.6
14 29.993 6.14 1.531717 48.84 0.5630 31.1
15 -382.107 (variable) 31.4

16 50.848 6.27 1.438750 94.93 0.5343 32.0
17 -53.169 (variable) 32.0

18 0.000 3.00 18.9
19 -65.174 1.00 1.834807 42.73 0.5648 18.1
20 16.794 5.49 1.808095 22.76 0.6307 17.9
21 -45.168 2.29 17.9
22 -27.765 1.00 2.000690 25.46 0.6133 17.1
23 3868.913 (variable) 17.4

24 -64.588 3.17 1.595220 67.74 0.5442 19.3
25 -29.313 1.90 19.9
26 54.084 4.27 1.595220 67.74 0.5442 22.6
27 -40.151 (variable) 22.8

28 62.164 4.63 1.548141 45.79 0.5685 22.6
29 -30.099 1.00 1.953750 32.32 0.5898 22.3
30 37.465 (variable) 22.4

31 38.870 8.48 1.595220 67.74 0.5442 23.1
32 -28.000 0.80 1.953750 32.32 0.5898 23.9
33 -47.730 BF 24.5
Image plane ∞

Aspheric surface first surface
K = 2.25376e + 000 A 4 = 3.25133e-006 A 6 = -3.03483e-009 A 8 = 3.88387e-012 A10 = -2.64826e-015 A12 = 8.36141e-019

16th page
K = -8.03251e-001 A 4 = -3.18540e-006 A 6 = 2.90027e-008 A 8 = -2.24588e-010 A10 = 8.34708e-013 A12 = -1.19390e-015

17th
K = 4.88557e-001 A 4 = -5.19876e-007 A 6 = 2.49381e-008 A 8 = -1.96367e-010 A10 = 7.56868e-013 A12 = -1.11249e-015

Various data Zoom ratio 2.63
Wide-angle Medium telephoto focal length 9.50 17.00 25.00
F-number 2.77 2.80 2.80
Half angle of view 57.30 41.04 30.63
Image height 14.80 14.80 14.80
Total lens length 211.00 211.00 211.00
BF 41.00 41.00 41.00

d12 41.58 12.33 5.01
d15 0.50 9.48 0.50
d17 0.40 20.67 36.97
d23 13.52 10.76 7.35
d27 0.87 1.40 1.35
d30 0.80 3.03 6.49
d33 41.00 41.00 41.00

Zoom lens group data group Start surface Focal length
1 1 -20.00
2 13 119.29
3 16 60.20
4 18 -29.98
5 24 27.45
6 28 -34.00
7 31 45.65

L1 First lens unit L2 Second lens unit L21 21st lens unit L22 22nd lens unit L3 Third lens unit L4 Fourth lens unit L41 41st lens unit L5 Fifth lens unit SP Aperture stop

Claims (15)

In order from the object side to the image side, a first lens group having a negative refractive power that does not move for zooming, a second lens group having a positive refractive power that moves for zooming, and an aperture stop , A third lens group having a negative refractive power that does not move for zooming, a fourth lens group that moves for zooming, and a fifth lens group that does not move for zooming; A zoom lens in which at least three sub-lens groups included in the second lens group and the fourth lens group move in the optical axis direction,
The focal lengths of the first lens group and the third lens group are f1 and f3, respectively, and the sub lens that moves most among the sub lens groups included in the second lens group during zooming from the wide-angle end to the telephoto end. the amount of movement of the group and m2, in zooming from the wide-angle end to the telephoto end, the amount of movement of the sub-lens group moved farthest in the sub-lens group included in the fourth lens group and m4, the at the wide-angle end Let β2_w be the lateral magnification of the second lens group and β2_t be the lateral magnification of the second lens group at the telephoto end.
0.67 ≦ f1 / f3 <4.0
1.4 <| m2 | / | m4 | <50.0
1.5 <β2_t / β2_w <4.0
A zoom lens characterized by satisfying the following conditional expression. In order from the object side to the image side, a first lens group having a negative refractive power that does not move for zooming, a second lens group having a positive refractive power that moves for zooming, and an aperture stop, A third lens group having a negative refractive power that does not move for zooming, a fourth lens group that moves for zooming, and a fifth lens group that does not move for zooming; A zoom lens in which at least three sub-lens groups included in the second lens group and the fourth lens group move in the optical axis direction,
  The first lens group includes an eleventh sub-lens group having a negative refractive power that does not move for focusing and a twelfth sub-lens group having a positive refractive power that moves for focusing.
  The focal lengths of the first lens group and the third lens group are f1 and f3, respectively, and the sub lens that moves most among the sub lens groups included in the second lens group during zooming from the wide-angle end to the telephoto end. The amount of movement of the group is m2, the amount of movement of the sub lens group that moves the most among the sub lens groups included in the fourth lens group during zooming from the wide angle end to the telephoto end is m4, and the eleventh sub lens The focal length of the group is f11, and the focal length of the twelfth sub-lens group is f12p.
    0.6 <f1 / f3 <4.0
    1.4 <| m2 | / | m4 | <50.0
    -0.15 <f11 / f12p <-0.04
A zoom lens characterized by satisfying the following conditional expression. In order from the object side to the image side, a first lens group having a negative refractive power that does not move for zooming, a second lens group having a positive refractive power that moves for zooming, and an aperture stop, A third lens group having a negative refractive power that does not move for zooming, a fourth lens group that moves for zooming, and a fifth lens group that does not move for zooming; A zoom lens in which at least three sub-lens groups included in the second lens group and the fourth lens group move in the optical axis direction,
  The first lens group includes an eleventh sub-lens group having a negative refractive power that does not move for focusing and a twelfth sub-lens group having a negative refractive power that moves for focusing.
  The focal lengths of the first lens group and the third lens group are f1 and f3, respectively, and the sub lens that moves most among the sub lens groups included in the second lens group during zooming from the wide-angle end to the telephoto end. The amount of movement of the group is m2, the amount of movement of the sub lens group that moves the most among the sub lens groups included in the fourth lens group during zooming from the wide angle end to the telephoto end is m4, and the eleventh sub lens The focal length of the group is f11, and the focal length of the twelfth sub-lens group is f12n.
    0.6 <f1 / f3 <4.0
    1.4 <| m2 | / | m4 | <50.0
    0.3 <f11 / f12n <0.8
A zoom lens characterized by satisfying the following conditional expression. The lateral magnification of the second lens unit at the wide angle end and Beta2_w, the lateral magnification of the second lens group at the telephoto end as Beta2_t,
1.5 <β2_t / β2_w <4.0
4. The zoom lens according to claim 2, wherein the following conditional expression is satisfied. Let fw be the focal length of the zoom lens at the wide angle end in a state of focusing on infinity ,
−5.0 <f1 / fw <−1.5
Claims 1, characterized by satisfying the conditional expression The zoom lens according to any one of claims 4. The lateral magnification of the second lens group at the wide angle end is β2_w ,
| Β2_w | <1.0
The zoom lens according to any one of claims 1 to 5 , wherein the following conditional expression is satisfied. The third lens group, a zoom lens according to any one of claims 1 to 6, characterized in that it comprises a lens having at least two negative refractive power. The zoom lens according to any one of claims 1 to 7 , wherein a lens closest to the object in the first lens group has a negative refractive power. 2. The first lens unit according to claim 1, wherein the first lens unit includes an eleventh sub lens unit having a negative refractive power that does not move for focusing, and a twelfth sub lens unit that moves for focusing. 3 . The zoom lens described. The twelfth sub-lens group has a positive refractive power, the focal length of the eleventh sub-lens group is f11, and the focal length of the twelfth sub-lens group is f12p.
-0.15 <f11 / f12p <-0.04
The zoom lens according to claim 9 , wherein the following conditional expression is satisfied. The twelfth sub-lens group has negative refractive power, the focal length of the eleventh sub-lens group is f11, and the focal length of the twelfth sub-lens group is f12n.
0.3 <f11 / f12n <0.8
The zoom lens according to claim 9 , wherein the following conditional expression is satisfied. The second lens group has at least one cemented lens composed of one convex lens and one concave lens,
The Abbe number of the convex lens is ν2p, the partial dispersion ratio of the convex lens is θ2p, the Abbe number of the concave lens is ν2n, and the partial dispersion ratio of the concave lens is θ2n.
−3.00 × 10 ⁻³ <(θ2p−θ2n) / (ν2p−ν2n) <− 1.5 × 10 ⁻³
The zoom lens according to any one of claims 1 to 11, characterized in that it satisfies the condition.
The Abbe number νd and the partial dispersion ratio θgF are expressed as follows: νd = (Nd, where Ng, NF, Nd, and NC are the refractive indices of the Fraunhofer line with respect to the g, F, d, and C lines, respectively. -1) / (NF-NC) and θgF = (Ng-NF) / (NF-NC)
It is represented by the following formula. The second lens group and the fourth lens group, the zoom lens according to any one of claims 1 to 12, characterized in that it comprises a lens having at least one aspherical surface. The second lens group comprises, in any one of claims 1 to claim 13, characterized in that it comprises a first 21 sub-lens group and the 22 sub lens unit which moves in different trajectory each other for zooming The zoom lens described. A zoom lens according to any one of claims 1 to 14 ,
An image sensor that receives an image formed by the zoom lens;
An imaging device comprising:

Images