JPH07261126A - Short distance correction lens equipped with vibrationproof function - Google Patents

Abstract

PURPOSE:To provide a short distance correction lens which is equipped with the vibrationproof function, small-sized and high in performance, and suitable for photographs, videos, etc. CONSTITUTION:The short distance correction lens equipped with the vibrtionproof function is equipped with a 1st lens group G1 with positive refractive power and a 2nd lens group G2 with positive refractive power on the object side in order from the object side, and also equipped with a final lens group GL with negative refractive power on the most image side, and, this short distance correction lens, which is focused on a short-distance body from the infinite distance side by moving the 1st lens group G1 and 2nd lens group G2 toward the body, is equipped with a displacing means which isolates vibration by moving some partial lens group GLP with negative refractive power in the final lens group GL in the direction almost at a right angle to the optical axis, and meets a condition of 0.25<¦betaM¦, where betaM is the photographic power at the shortest photographic distance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a short-distance correction lens having a vibration-proof function, and more particularly to a vibration-proof method for a short-distance correction lens (so-called microlens or macrolens).

[0002]

2. Description of the Related Art Conventionally, as disclosed in JP-A-1-189621, JP-A-1-191112, and JP-A-1-191113, the shooting distance is infinity or a distance close to infinity (shooting magnification). (It is close to 0)
In some cases, the entire lens group or a part of the lens group is moved in a direction substantially orthogonal to the optical axis to correct a change in image position due to camera shake or the like. In this specification, moving the lens group in a direction substantially orthogonal to the optical axis to correct a change in image position due to camera shake or the like is referred to as “anti-vibration”.

[0003]

However, with the conventional technique as described above, image stabilization cannot be performed in a sufficiently large photographing magnification (for example, -1/2 times), and even if the photographing magnification is equal to (-). There is an inconvenience that the image stabilization cannot be performed near the (1 ×) state. The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a short-distance correction lens having a vibration-proof function, small size, and high performance, which is suitable for photography, video, and the like. .

[0004]

In order to solve the above-mentioned problems, in the present invention, on the object side, in order from the object side,
A first lens group G1 having a positive refracting power and a second lens group G2 having a positive refracting power are provided, and a final lens group GL having a negative refracting power is provided on the most image side. In the short-distance correction lens in which the first lens group G1 and the second lens group G2 move to the object side when focusing on an object, a partial lens having a negative refractive power in the final lens group GL. Equipped with a displacement means for moving the group GLP in a direction substantially orthogonal to the optical axis for vibration isolation, and satisfying the condition of 0.25 <| βM |, where βM is the shooting magnification at the shortest shooting distance. A short-distance correction lens is provided.

According to a preferred aspect of the present invention, the focal length of the final lens group GL is fL, the focal length of the partial lens group GLP in the final lens group GL is fLP, and the partial lens group during image stabilization is When the magnitude of the maximum displacement amount of GLP in the direction orthogonal to the optical axis is ΔSLP, the condition of ΔSLP / | fLP | <0.1 0.1 <fLP / fL <2 is satisfied. Further, a fixed flare stop is provided on the optical axis for blocking unnecessary light rays when the partial lens group GLP in the final lens group GL moves in a direction substantially orthogonal to the optical axis for vibration isolation. Is preferred.

[0006]

In the present invention, in order to be suitable for a short-distance correction lens for photography, video, etc., on the object side, in order from the object side,
A first lens group G1 having a positive refracting power and a second lens group G2 having a positive refracting power are provided, and a final lens group GL having a negative refracting power is provided on the most image side. A configuration is adopted in which the first lens group G1 and the second lens group G2 move to the object side when focusing on the object. As a reason for adopting this configuration in the present invention, the features and advantages of this type of short-distance correction lens will be briefly described.

First, with the short-distance correction lens having the above-mentioned structure, good image forming performance can be obtained at each photographing magnification including -1/2 times and equal magnification (-1 times). Further, since the negative lens group (final lens group GL) is provided on the image side to constitute a telephoto lens type as a whole, the total lens length can be shortened as compared with the focal length of the entire lens system. Therefore, in addition to being advantageous for downsizing, the first lens group G when focusing on an object at a short distance from infinity
The amount of movement of the first and second lens groups G2 can be made smaller than that of the conventional total extension method, which is advantageous in the structure of the holding mechanism and the drive mechanism.

In addition, the action of the negative lens group of the final lens group GL can well balance the entire Petzval sum, which is advantageous for aberration correction. The present invention has found optimum conditions for image stabilization in such a short-distance correction lens suitable for photography and video.

The conditions of the present invention will be described in detail below. First of all, in the present invention, the first lens group G1 is used when performing short-distance correction, that is, focusing from infinity to a short-distance object.
And the second lens group G2 largely moves to the object side. Therefore, if the first lens group G1 or the second lens group G2 is an anti-vibration correction optical system that is displaced in the direction orthogonal to the optical axis, the holding mechanism and the drive mechanism become complicated and large in size, which is not preferable.

Therefore, in the present invention, the lens group closest to the image side, that is, the final lens group GL, is used because of the simplification of the mechanism of the entire lens system and the excellent aberration characteristics during image stabilization.
Among them, a construction is adopted in which a displacement means is provided in a partial lens group GLP having a negative refracting power to perform image stabilization. Less than,
The partial lens group GLP is called an "anti-vibration lens group".

The short-distance correction lens of the present invention satisfies the following conditional expression (1) in addition to the above configuration. 0.25 <| βM | (1) where βM: shooting magnification at the shortest shooting distance

Conditional expression (1) shows the short-distance focusing ability of the optical system according to the present invention as a short-distance correction lens, and at the same time, an appropriate range () for the magnitude of the photographing magnification at the shortest photographing distance for practical use. The lower limit) is specified. If the lower limit of conditional expression (1) is not reached, the shooting magnification at the shortest shooting distance becomes too small, and the short-distance focusing ability becomes insufficient, making it unsuitable for practical use. By setting the lower limit of conditional expression (1) to 0.45, it is possible to secure a sufficient short-distance focusing ability.

In order to obtain better imaging performance, it is preferable that the following conditional expressions (2) and (3) are satisfied. ΔSLP / | fLP | <0.1 (2) 0.1 <fLP / fL <2 (3) where fL: focal length of final lens group GL fLP: antivibration lens group GLP in final lens group GL Focal length ΔSLP: Maximum displacement amount in the direction orthogonal to the optical axis of the image stabilization lens group GLP during image stabilization

Conditional expression (2) is defined by the magnitude ΔSLP of the maximum displacement amount of the image stabilizing lens group GLP during image stabilization.
An appropriate range is defined by the ratio of the focal length fLP of LP.
If the upper limit of conditional expression (2) is exceeded, the maximum displacement amount of the image stabilization lens group GLP in the final lens group GL during image stabilization becomes too large, and as a result, the amount of aberration fluctuation during image stabilization will become large. Since it becomes large, it is inconvenient. In particular, at the peripheral position on the image plane, the difference in the optical axis direction between the best image plane in the meridional direction and the best image plane in the sagittal direction widens, which is inconvenient. If the upper limit of conditional expression (2) is set to 0.03, a better imaging performance can be obtained.

Conditional expression (3) defines an appropriate range for the ratio between the focal length fLP of the image stabilizing lens group GLP and the focal length fL of the final lens group GL. Conditional expression (3)
When the value exceeds the upper limit of, the refracting power of the image stabilizing lens group GLP becomes too small, and the spherical aberration is likely to be excessive on the negative side, and the curvature of the image surface is likely to occur in the negative direction.
It is inconvenient.

On the contrary, if the lower limit of conditional expression (3) is exceeded,
Not only is the refracting power of the anti-vibration lens group GLP too large, spherical aberration tends to become excessive on the positive side, but also the image plane tends to bend in the positive direction, which is inconvenient. Also,
The fluctuations of various aberrations during image stabilization become excessive, and it becomes difficult to obtain good imaging performance during image stabilization, which is inconvenient. If the upper limit of conditional expression (3) is set to 0.4 and the lower limit is set to 0.15, even better imaging performance can be obtained.

In order to obtain even better imaging performance, it is desirable to satisfy the following conditional expression (4). 0.5 <| fL | / f <4 (4) where f: focal length of the entire lens system in the infinity shooting state

Conditional expression (4) defines an appropriate range for the ratio of the focal length fL of the final lens group GL to the focal length f of the entire lens system in the infinity photographing state.
If the upper limit of conditional expression (4) is exceeded, the focal length fL of the final lens group GL having the most negative refractive power on the image side becomes too large, and as a result, the lens length becomes large and the object of the present invention. It is not preferable because it is against the compactness which is one of the above. Moreover, the curvature of the image plane and the spherical aberration tend to be excessive on the negative side, which is inconvenient. On the other hand, when the value goes below the lower limit of conditional expression (4), the focal length fL of the final lens group GL having the negative refractive power closest to the image side becomes too small, and as a result, the back focus becomes short. Not preferable. Further, the curvature of the image plane and the spherical aberration tend to be excessive on the positive side, which is inconvenient. Further, distortion is largely generated on the positive side, which is not preferable.

In order to obtain better imaging performance and image stabilization performance, it is desirable to satisfy the following conditional expressions (5) and (6) in addition to the above-mentioned conditions. ΔSLP / D <0.2 (5) L / f <0.5 (6) where D: Effective diameter of the most object-side surface of the image stabilizing lens group GLP L: On-axis of the image stabilizing lens group GLP thickness

Conditional expression (5) is defined by the magnitude ΔSLP of the maximum displacement amount of the image stabilization lens group GLP during image stabilization.
An appropriate range is defined by the ratio with the effective diameter D of the surface of the most object side of LP. If the upper limit of conditional expression (5) is exceeded, stray light easily mixes during image stabilization with respect to the effective diameter of the image stabilization lens group GLP in both infinity shooting and short-distance shooting. , Is inconvenient. By disposing a fixed flare stop on the optical axis, it is possible to reduce the mixing of the stray light. In addition, the mechanism for vibration isolation becomes large and complicated, which is not preferable. In conditional expression (5), if the upper limit value is 0.08, it is possible to obtain better imaging performance and image stabilization performance.

Conditional expression (6) defines an appropriate range for the ratio of the axial thickness of the image stabilizing lens unit GLP to the focal length of the entire lens system in the infinity photographing state. When the value exceeds the upper limit of conditional expression (6), the axial thickness of the image stabilizing lens group GLP becomes too large, and as a result, the mechanism for image stabilization becomes large and complicated, which is not preferable.

When actually constructing the anti-vibration lens group GLP,
In addition to the above-mentioned conditions, it is desirable to satisfy the following conditional expressions (7) and (8). 1.5 <N- (7) 30 <ν- (8) where N-: maximum refractive index of the negative lens components in the antivibration lens group GLP ν-: antivibration lens group GLP The minimum Abbe number of the negative lens component of is the N- and ν- are d-line (λ = 587.6 nm)
Shows the refractive index and the Abbe number with respect to.

If the lower limit of conditional expression (7) is not reached, spherical aberration tends to be excessively large and distortion is increased toward the positive side both in the infinity photographing state and in the short distance photographing state, which is inconvenient. is there. In addition, the Petzval sum also tends to shift to the negative side, so that the curvature of the image surface tends to increase in the positive direction, which is inconvenient.

When the value goes below the lower limit of conditional expression (8), in both the infinity state and the short-distance shooting state,
Axial chromatic aberration of short wavelength tends to be excessive on the positive side, and it becomes difficult to obtain good imaging performance.

In addition to the above conditions, the following conditions are preferably satisfied when actually constructing an optical system. First, if a fixed flare stop is provided on the optical axis in addition to the aperture stop, it is possible to block unnecessary light rays when the lens group is displaced across the optical axis for vibration isolation, and it is possible to prevent the occurrence of ghosts. It is possible to avoid unnecessary exposure. Further, it is desirable that the anti-vibration lens group GLP be fixed along the optical axis when focusing on a short distance so that the holding mechanism and the driving mechanism can be simplified.

When focusing on a short distance, in order to sufficiently correct aberrations and obtain good image forming performance, the first lens group G
It is desirable that the first and second lens groups G2 have a configuration that is nearly symmetrical with respect to the aperture stop. More specifically, the most image-side surface of the first lens group G1 is a divergent surface that is convex toward the object side, and the most object-side surface of the second lens group G2 is a divergent surface that is convex toward the image side. Is desirable.

In order to achieve good chromatic aberration correction when focusing at a short distance, the first positive refractive power that moves when focusing at a short distance is used.
It is necessary to achromatize each lens group of the lens group G1 and the second lens group G2. Therefore, at least one lens component having a negative refractive power is required in each lens group. At this time, in any of the first lens group G1 and the second lens group G2, the minimum Abbe number ν m of the Abbe numbers of the negative lens component preferably satisfies the following conditional expression (9). . νm <38 (9)

In order to further improve the image forming performance, it is important to distribute the refractive power between the first lens group G1 and the second lens group G2, and the focal length of the first lens group G1 and the second lens group G2 should be the same. If the focal lengths are f1 and f2 respectively,
It is preferable that the following conditional expression (10) is satisfied. 1.5 <f1 / f2 <3.0 (10)

Further, as the photographing magnification increases, the depth on the side of the object field becomes shallower, so that there is an inconvenience that the focus tends to be out of focus. In this case, by combining the autofocus system and the short distance correction lens of the present invention, it is possible to avoid the defocus.

[0030]

EXAMPLES In each of the examples of the short-distance correction lens having the image stabilizing function according to the present invention, on the object side, in order from the object side, the first lens group G1 having a positive refractive power and the positive refractive power are provided. And a second lens group G2 having the second lens group G2, and the third lens group GL as the final lens group having a negative refractive power on the most image side
In the near-distance correction lens in which the first lens group G1 and the second lens group G2 move to the object side during focusing from infinity to a short-distance object, the third lens group (final lens group) GL There is provided a displacement means 1 for moving a part of the partial lens group GLP having a negative refracting power in a direction substantially orthogonal to the optical axis for vibration isolation.

Each embodiment of the present invention will be described below with reference to the accompanying drawings. [Embodiment 1] FIG. 1 is a diagram showing the structure of a short-distance correction lens according to the first embodiment of the present invention. The illustrated short-distance correction lens includes, in order from the object side, a first lens group G1 including a biconvex lens, a positive meniscus lens having a convex surface facing the object side, and a negative meniscus lens having a convex surface facing the object side, and a concave surface facing the object side. A second lens group G2 composed of a cemented lens of a negative meniscus lens having a negative side and a positive meniscus lens having a concave surface facing the object side and a biconvex lens, and a positive meniscus lens having a concave surface facing the object side, a biconcave lens and a biconvex lens And a third lens group GL.
In the third lens group GL, the positive meniscus lens having a concave surface facing the object side and the biconcave lens constitute a vibration-proof lens group GLP having a negative refracting power as a whole. Further, between the first lens group G1 and the second lens group G2,
An aperture stop S is provided as shown.

FIG. 1 shows the positional relationship between the lens groups in the infinity photographing state. When focusing on a short-distance object, the lens group moves along the optical axis along the trajectory shown by the arrow in the figure. However, the third lens group GL is fixed in the optical axis direction. Also,
A part of the third lens group GL, that is, the anti-vibration lens group GLP is appropriately moved in a direction substantially orthogonal to the optical axis by the anti-vibration mechanism 1 which is a displacement means, so that the image shake caused by camera shake or the like is corrected. It has become. Example 1 is an application of the present invention to a photographic lens having a relatively short focal length.

The following table (1) lists the values of specifications of the first embodiment of the present invention. In Table (1), f is the focal length at infinity, β is the shooting magnification at short range, and F _NO
Represents the F number in the infinite state, 2ω represents the angle of view in the infinite state, and Bf represents the back focus. Furthermore, the leftmost number indicates the order of each lens surface from the object side, r
Is the radius of curvature of each lens surface, d is the distance between each lens surface, n
(D) and ν are d lines (λ = 587.6 nm), respectively.
The refractive index and the Abbe number for n (G) are g-lines (λ
= 435.8 nm).

[0034]

[Table 1] f = 105 F _NO = 2.86 2ω = 23.06 ° r d ν n (D) n (G) 1 89.1351 4.3000 55.60 1.69680 1.71232 2 -825.4576 0.2000 3 34.3250 6.0000 55.60 1.69680 1.71232 4 84.7777 2.0000 5 177.7491 2.0000 35.70 1.62588 1.64852 6 26.8115 (d6 = variable) 7 -30.2229 2.0000 33.75 1.64831 1.67323 8 -2217.9336 7.5000 53.75 1.69350 1.70959 9 -38.6200 0.2000 10 637.4222 4.3000 50.19 1.72000 1.73797 11 -68.9166 (d11 = variable) 12 -91.5340 3.5000 25. 1.84631 13 -57.7982 13.0298 14 -43.9910 2.0000 40.90 1.79631 1.82109 15 79.4290 1.5000 16 80.0850 4.5000 49.52 1.74429 1.76323 17 -111.5109 (Bf) (variable distance at focus) f, β 105.00000 -0.50000 -1.00000 d6 29.60250 27.91740 26.261800333340 70.14590 Bf 42.15420 42.15420 42.15420 (Vibration stabilization data) Infinity shooting magnification Shooting magnification -1/2 -1 Moving amount of anti-vibration lens group in the direction orthogonal to the optical axis (mm) 0.80 0.80 0.80 image (Mm) -0.752 -0.752 -0.752 (The negative sign of the amount of movement of the image indicates the direction opposite to the moving direction of the lens) (Condition corresponding value) βM = -1.0 f = 105.000 fL = -187.109 fLP = -46.723 f1 = 183.937 f2 = 85.879 D = 24.7 L = 18.5298 ΔSLP = 0.8 (1) | βM | = 1. 0 (2) ΔSLP / | fLP | = 0.0171 (3) fLP / fL = 0.24971 (4) | fL | / f = 1.78199 (5) ΔSLP / D = 0.0324 (6) L / f = 0.176 (7) N- = 1.79631 (8) ν- = 40.90 (9) νm = 33.75 (10) f1 / f2 = 2.142

FIGS. 2 to 4 are graphs showing various aberrations in the infinite state, various aberration diagrams in the state where the photographing magnification is −1/2, and various aberrations in the state where the photographing magnification is equal (−1). It is a figure. In each aberration diagram, F _NO is the F number, Y is the image height, NA is the numerical aperture, and D is the d-line (λ = 5).
87.6 nm) and G indicates the g-line (λ = 435.8 nm). Further, in the aberration diagram showing astigmatism, the solid line shows the sagittal image plane and the broken line shows the meridional image plane. As is clear from each aberration diagram, in the present example, it is understood that various aberrations are well corrected including in the case of image stabilization.

[Embodiment 2] FIG. 5 is a diagram showing a structure of a short-distance correction lens according to a second embodiment of the present invention. The short-distance correction lens shown in the figure is a biconvex lens in order from the object side.
A first lens group G1 including a positive meniscus lens having a convex surface facing the object side and a negative meniscus lens having a convex surface facing the object side, and a second lens group including a cemented lens of a biconcave lens and a biconvex lens and a biconvex lens. G3, and a third lens group GL including a positive meniscus lens having a concave surface facing the object side, a biconcave lens, a biconvex lens, and a negative meniscus lens having a convex surface facing the object side. Incidentally, of the third lens group GL, the biconcave lens constitutes the anti-vibration lens group GLP having a negative refractive power. Also, the first
An aperture stop S is provided between the lens group G1 and the second lens group G2 as shown in the figure.

FIG. 5 shows the positional relationship of each lens group in the infinity photographing state. When focusing on a short-distance object, it moves along the optical axis along the trajectory shown by the arrow in the figure. However, the third lens group GL is fixed in the optical axis direction. Also,
A part of the third lens group GL, that is, the anti-vibration lens group GLP is appropriately moved in a direction substantially orthogonal to the optical axis by the anti-vibration mechanism 1 which is a displacement means, so that the image shake caused by camera shake or the like is corrected. It has become. The second embodiment also applies the present invention to a photographic lens having a relatively short focal length.

The following table (2) lists the values of specifications of the second embodiment of the present invention. In Table (2), f is the focal length at infinity, β is the shooting magnification at short range, and F _NO
Represents the F number in the infinite state, 2ω represents the angle of view in the infinite state, and Bf represents the back focus. Furthermore, the leftmost number indicates the order of each lens surface from the object side, r
Is the radius of curvature of each lens surface, d is the distance between each lens surface, n
And ν are the refractive index and the Abbe number for the d-line (λ = 587.6 nm), and n (G) is the g-line (λ = 43 nm).
The refractive index for 5.8 nm is shown.

[0039]

[Table 2] f = 105.0000 F _NO = 2.80 2ω = 23.14 ° r d ν n (D) n (G) 1 74.5230 5.0000 49.44 1.77279 1.79232 2 -1424.0100 0.1500 3 28.6450 5.0000 50.28 1.72000 1.73794 4 52.7010 2.0000 5 87.0120 2.0000 35.19 1.74950 1.77694 6 24.5736 (d6 = variable) 7 -32.5290 2.0000 31.15 1.68893 1.71775 8 344.8550 10.5000 51.11 1.73350 1.75137 9 -41.8010 3.0000 10 178.0190 5.0000 53.76 1.69350 1.70961 11 -91.1694 (d11 = 4.0) 35 -199.1 1.62588 1.64855 13 -55.6910 2.0000 14 -114.2360 1.8000 45.52 1.79668 1.81874 15 50.8710 1.8000 16 47.2130 6.0000 35.64 1.62588 1.64855 17 -234.3140 4.6000 18 -38.3740 2.0000 39.59 1.80454 1.83041 19 -76.9281 (Bf) (variable distance when focusing) f, β 105.00000 -0.50000 d6 15.15181 21.84721 d11 6.15144 32.39224 Bf 43.74657 43.74657 (The negative sign of the amount of movement of the image indicates the direction opposite to the direction of movement of the lens) (Condition corresponding value) βM = -0.5 f = 105.000 fL = -118.525 fLP = -43.967 f1 = 153 .000 f2 = 80.769 D = 24.52 L = 1.8 ΔSLP = 0.2 (1) | βM | = 0.5 (2) ΔSLP / | fLP | = 0.00455 (3) fLP /FL=0.37095 (4) | fL | /f=1.12881 (5) .DELTA.SLP / D = 0.0082 (6) L / f = 0.0171 (7) N- = 1.79668 (8) ) Ν- = 45.37 (9) νm = 31.15 (10) f1 / f2 = 1.894

FIG. 6 and FIG. 7 are graphs showing various aberrations in the state of infinity and various graphs in the state where the photographing magnification is -1/2. In each aberration diagram, F _NO is the F number, Y is the image height, NA is the numerical aperture, and D is the d-line (λ =
587.6 nm) and G is the g-line (λ = 435.8 nm)
Are shown respectively. Further, in the aberration diagram showing astigmatism, the solid line shows the sagittal image plane and the broken line shows the meridional image plane. As is clear from each aberration diagram, in the present example, it is understood that various aberrations are well corrected including in the case of image stabilization.

[0041]

As described above, according to the present invention, it is possible to provide a small-sized, high-performance short-distance correction lens suitable for photography and video, which is provided with a vibration-proof function. For this reason, hand-held photography becomes possible, which is extremely convenient at the time of actual photography, and photography can also be performed with good imaging performance under vibration conditions caused by camera shake or the like.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a short-distance correction lens according to Example 1 of the present invention.

FIG. 2 is a diagram of various types of aberration in the infinite state of the first example of FIG.

FIG. 3 is a diagram of various types of aberration when the imaging magnification of the first example of FIG. 1 is −1/2.

FIG. 4 is a same magnification (-1 ×) as the photographing magnification of the first embodiment of FIG.
FIG. 6 is a diagram of various aberrations in the state of FIG.

FIG. 5 is a diagram showing a configuration of a short-distance correction lens according to Example 2 of the present invention.

FIG. 6 is a diagram of various types of aberration in the infinite state of the second example of FIG.

FIG. 7 is a diagram of various types of aberration in the second example of FIG. 5 at a photographing magnification of −1/2.

[Explanation of symbols]

 G1 First lens group G2 Second lens group GL Final lens group GLP Anti-vibration lens group 1 Displacement means (anti-vibration mechanism) S Aperture stop

Claims (7)

[Claims] 1. The object side comprises, in order from the object side, a first lens group G1 having a positive refractive power and a second lens group G2 having a positive refractive power, and the most negative lens group on the image side. A short-distance correction lens including a final lens group GL having a refractive power, wherein the first lens group G1 and the second lens group G2 move toward the object side when focusing on an object at infinity from a short distance, The partial lens group GLP having a negative refracting power in the group GL is provided with a displacement means for moving in a direction substantially orthogonal to the optical axis for vibration isolation, and the shooting magnification at the shortest shooting distance is set to βM. At this time, a short-distance correction lens characterized by satisfying the condition of 0.25 <| βM | 2. The short-distance correction lens according to claim 1, wherein the partial lens group GLP in the final lens group GL is fixed along the optical axis when focusing on a short distance. 3. The focal length of the final lens group GL is fL
And the focal length of the partial lens group GLP in the final lens group GL is fLP, and the partial lens group G during image stabilization is
ΔS is the maximum displacement in the direction orthogonal to the optical axis of LP
The short-distance correction lens according to claim 1 or 2, wherein the condition of ΔSLP / | fLP | <0.1 0.1 <fLP / fL <2 is satisfied. 4. The focal length of the final lens group GL is fL
4. When the focal length of the entire lens system in the infinity shooting state is f, the following condition is satisfied: 0.5 <| fL | / f <4. The short-distance correction lens described in. 5. A maximum displacement amount of the partial lens group GLP in the final lens group GL in a direction orthogonal to the optical axis of the partial lens group GLP during image stabilization, where D is the effective diameter of the surface closest to the object side. Is ΔSLP, the axial thickness of the partial lens group GLP is L, and the focal length of the entire lens system in the infinity shooting state is f, then ΔSLP / D <0.2 L / f The short-distance correction lens according to any one of claims 1 to 4, wherein the condition <0.5 is satisfied. 6. A partial lens group G of the final lens group GL.
The maximum refractive index of the negative lens components in the LP is N-
When the minimum Abbe number of the Abbe numbers of the negative lens component in the partial lens group GLP is ν-, the condition of 1.5 <N- 30 <ν- is satisfied. The short-distance correction lens according to any one of 1 to 5. 7. A fixed flare diaphragm is provided on the optical axis for blocking unnecessary light rays when the partial lens group GLP in the final lens group GL moves in a direction substantially orthogonal to the optical axis for vibration isolation. The short-distance correction lens according to claim 1, wherein the short-distance correction lens is provided.