JPH07159668A - Lens barrel - Google Patents

Abstract

PURPOSE:To improve the efficiency of assembling work without making a lens barrel large and to prevent unwanted load from being applied onto a flexible printed board. CONSTITUTION:This lens barrel is provided with a vibrating and driving mechanism 101 motor-driving a vibration-proof optical system L3 constituting a photographing lens in a direction different from an optical axis in order to prevent the blurring of a photographed image, a shutter driving mechanism 42 integrated with the mechanism 101 and motor-driving a lens shutter 41, focusing mechanisms 52 and 53 performing focusing by motor-driving a focusing optical system L4 constituting the photographing lens, a 1st flexible printed board 63 for connecting the driving sources 21 and 42a of the mechanisms 101 and 42 to an electric control means installed out of the lens barrel, and a 2nd flexible printed board 65 for connecting the driving source 53 of the focusing mechanism to the electric control means installed out of the lens barrel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens used in a camera capable of electrically driving an anti-vibration optical system which constitutes a taking lens in a direction different from an optical axis in order to prevent the shake of a taken image. Regarding the lens barrel.

[0002]

2. Description of the Related Art Conventionally, a so-called flexible means has been used as a means for electrically connecting a drive source of a lens shutter drive mechanism or a focusing mechanism provided inside a lens barrel to an electric component (control IC) provided outside the barrel. Printed circuit board (F
A flexible substrate called PC) is used. This type of FPC has one end connected to a substrate inside the lens barrel in which each drive source is mounted, and is drawn around the space inside the lens barrel in a state of being bent a plurality of times, and then the tip is provided outside the lens barrel. To the mounted board (on which the control IC is mounted). As a result, each drive source inside the lens barrel is electrically connected to the electric components outside the lens barrel via the wiring pattern on the FPC. FP like this
If C is used, even when the electric component moves in the optical axis direction as the lens group moves due to zooming, for example,
It can be dealt with by appropriately deforming the FPC, and does not give an unreasonable load to the lens group.

[0003]

By the way, a camera shake amount caused by camera shake or the like is detected by a camera shake sensor, and the image stabilization optical system of the photographing lens is electrically driven in a direction orthogonal to the optical axis based on the detected output. However, there is known a camera which prevents the shake of a captured image. In this type of camera, in addition to the lens shutter drive mechanism and the focusing mechanism, an anti-vibration drive mechanism needs to be provided in the lens barrel, so that the number of drive mechanisms in the lens barrel increases and How to connect the drive source to the electric parts outside the lens barrel becomes a problem.

It is assumed that a plurality of drive sources in the lens barrel are connected to one FPC.
To connect to electrical parts outside the lens barrel,
Since the number of wiring patterns on C is extremely large, it is necessary to widen the width of the FPC. When the width of the FPC is widened, when the FPC is stretched in a narrow space in the lens barrel, for example, in parallel with the optical axis, the FPC must be bent around the optical axis in accordance with the curvature of the barrel forming the lens barrel. In this case, it becomes difficult to bend the FPC in the front-rear direction of the optical axis, the assembling work efficiency decreases, and an undesired load is applied to the FPC when the lens group moves, which may cause disconnection. In order to prevent this, the lens barrel is inevitably increased in size. Further, for example, in the case where the distance between the drive mechanisms changes due to zooming of the taking lens, if the FPC is unified,
There is also a problem that the shape of the FPC becomes complicated due to the necessity of coping with the change in the above-mentioned interval, resulting in an increase in cost. On the other hand, the drive sources for the lens shutter drive mechanism, the focusing mechanism, and the image stabilization drive mechanism described above are respectively
If an attempt is made to connect to the electric component outside the lens barrel by the FPC of the book, the man-hours at the time of assembling will increase, and in this case as well, the efficiency of the assembling work will be reduced from the meaning other than the above.

An object of the present invention is to provide a lens barrel which improves the assembling work efficiency without increasing the size of the lens barrel and prevents an undesired load from being applied to the flexible printed circuit board.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 showing an embodiment, a lens barrel according to the present invention comprises a vibration-preventing optical element which constitutes a photographing lens in order to prevent shake of a photographed image. An image stabilization drive mechanism 101 for electrically driving the system L3 in a direction different from the optical axis, and an integrated image stabilization drive mechanism 101,
A shutter drive mechanism 4 for electrically driving the lens shutter 41
2 and the focusing optical system L4 that constitutes the taking lens.
Focusing mechanisms 52 and 53 for electrically driving the lens to perform focusing, and drive sources 21 and 42a of the anti-vibration driving mechanism 101 and the shutter driving mechanism 42 are connected to an electric control means 71 (FIG. 5) provided outside the lens barrel. The first flexible printed circuit board 63 and the second flexible printed circuit board 65 that connects the driving source 53 of the focusing mechanism to the electric control means 71 provided outside the lens barrel are provided, and the above problems are solved. Solve. In particular, the invention of claim 2 is integrated with the image stabilization drive mechanism 101 and the shutter drive mechanism 42, and also holds the first substrate 5 for holding the image stabilization optical system L3 movably in a direction different from the optical axis, and focusing. A second unit that is integrated with the mechanisms 52 and 53 and that holds the focusing optical system L4 movably in the optical axis direction.
Zooming for changing the distance between the image stabilizing optical system L3 and the focusing optical system L4 by driving the first substrate 51 and the first and second substrates 5, 51 in the optical axis direction in order to change the focal length of the photographing lens. Mechanisms 2, 3, and 77 are provided.

[0007]

With the first flexible printed circuit board 63, the drive source 2 for the image stabilization drive mechanism 101 and the shutter drive mechanism 42 is provided.
1, 42a are connected to the electric control means 71 provided outside the lens barrel, and the drive source 53 of the focusing mechanism is connected to the electric control means 71 on the second flexible printed circuit board 65.
Since it is connected to each drive source 21, 42a, 5
The width of each flexible printed circuit board 63, 65 can be narrowed compared to the case where 3 is connected to the electric control means 71 by one flexible printed circuit board. In addition, the anti-vibration drive mechanism 1 is operated by changing the focal length (zooming) of the photographing lens
01, the shutter drive mechanism 42, and the focusing mechanisms 52 and 53 change in distance. However, since only the driving source 53 of the focusing mechanism is connected to the second flexible printed circuit board 65, at least the second flexible printed circuit board 65 is connected. The shape of the printed circuit board 65 can be simplified. On the other hand, the image stabilization drive mechanism 101 and the shutter drive mechanism 42
The first flexible printed circuit board for connecting the drive sources 21, 42a of both mechanisms 101, 42 does not change even if the taking lens is zoomed by the integration of the two mechanisms 101, 42. The shape of 63 can be simplified.

Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. It is not limited to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. 1 and 2 are side sectional views showing a lens barrel-integrated camera (zoom camera) according to the present embodiment.
Shows a state in which the lens barrel is in the wide-angle position, and FIG. 2 shows a state in which the lens barrel is in the telephoto position. Reference numeral 2 denotes a fixed lens barrel fixed to the camera body 1. The fixed lens barrel 2 has linear grooves 2a and 2b formed in the optical axis direction on the peripheral surface thereof. A cam barrel 3 is rotatably fitted on the outer peripheral surface of the fixed lens barrel 2 and is retained by a ring 4. The rotation of the zoom motor 77 (FIG. 5) is transmitted to the gear portion 3d formed on the outer peripheral surface of the cam barrel 3 via the gear GR, whereby the cam barrel 3 rotates. Further, cam grooves 3a, 3b, 3c are formed on the peripheral surface of the cam barrel 3.

A lens substrate 5 is inserted through the inner peripheral surface of the fixed barrel 2, and a camera shake correction device 100 is held on the substrate 5. The image stabilizing apparatus 100 includes an image stabilizing lens group (hereinafter referred to as an image stabilizing lens) L3 held by a lens holder 6 and a drive mechanism 101 that drives the image stabilizing lens L3. For example, as shown in FIG. 3, an X-direction drive mechanism 10 that drives the anti-vibration lens L3 in the X direction and a Y-direction drive mechanism 20 that drives the anti-vibration lens L3 in the Y direction.
It consists of and. Here, both the X direction and the Y direction are directions orthogonal to the optical axis of the taking lens.

The Y-direction drive mechanism 20 includes a Y-direction motor 21.
And a gear 22 that rotates integrally with the output shaft of the motor 21
And a reduction gear train 23 that reduces the rotation of the gear 22,
A Y-direction shift drive shaft 24 connected to the gear train 23 and a Y-direction drive arm 25 for converting the rotation of the drive shaft 24 into a linear motion.
And have. The Y-direction shift drive shaft 24 is rotatably supported on the substrate 5 by a pair of flanges 24a and 24b, and a gear 24c that meshes with a final gear of the reduction gear train 23 is coupled to an upper portion of the Y-direction shift drive shaft 24 and a lower portion thereof. Male thread 2
4d is formed. The Y-direction drive arm 25 is held in a space formed on the substrate 5 so as to be able to move up and down and not to rotate, and a male screw portion 24d of the drive shaft 24 is screwed to a female screw portion 25a formed on the upper portion thereof.

A holding portion 25b is formed at the lower end of the driving arm 25, and the holding portion 25b is provided via four slider balls 26.
The upper connecting portion of the lens holder 6 is held by b. Therefore, as the drive arm 25 moves up and down, the lens holder 6, that is, the image stabilizing lens L3 is shifted in the Y direction in the drawing. The shift amount depends on the rotation amount of the motor 21. Further, the X-direction drive mechanism 10 is also configured to shift the image stabilizing lens L3 in the X-direction by the same configuration as the Y-direction drive mechanism 20.

A disk 31 having a plurality of concentric holes is rotatably attached to the gear 22, which rotates integrally with the output shaft of the Y-direction motor 21.
Reference numeral 32 is a well-known photo interrupter having a light projecting portion and a light receiving portion that face each other with the hole forming portion of the disc 31 interposed therebetween,
A pulse signal is output each time the photo interrupter 32 detects a hole in the disk 31. Therefore, the rotation amount of the motor (which depends on the shift amount of the image stabilizing lens L3) can be detected by counting the number of pulses. Also, X
A similar disk and photo interrupter are also provided on the direction motor side, and the amount of rotation of the motor is detected by this.

Here, in FIG. 3, one photo interrupter 32 is shown for each of the X and Y directions, but actually two photo interrupters 32 are provided for each direction as shown in FIG. A photo interrupter 32 is provided. The reason why two photo interrupters are used is to detect the moving direction as well as the moving amount of the image stabilizing lens L3. Reference numeral 33 is a spring that biases the lens holder 6 toward the Y-direction drive mechanism 20 and the X-direction drive mechanism 10, respectively.

In FIG. 1, a lens shutter mechanism 40 is integrally attached to the image stabilizing apparatus 100 constructed as described above. The lens shutter mechanism 40 is configured by integrating a shutter blade 41 that also serves as a diaphragm and a drive unit 42 that drives the shutter blade 41, and the drive unit 42 is screwed to the substrate 5 with a screw 43. Further, an electric component 42a such as a motor for driving the shutter blade 41 is mounted on the drive unit 42, and a lens group L2 is held on the inner peripheral surface side thereof. Here, the cam follower 5a planted on the substrate 5 penetrates the straight groove 2b and is engaged with the cam groove 3b. A lens holder 45 that holds the lens unit L1 is inserted through the front end side of the fixed lens barrel 2, and a cam follower 45a that is planted on the outer peripheral surface of the lens holder 45 penetrates the rectilinear groove 2a and is engaged with the cam groove 3a.

Further, on the rear side of the fixed lens barrel 2, a lens substrate 51 having a helicoid 51a formed on the inner peripheral surface thereof is inserted, and a cam follower 51b planted on the outer peripheral surface thereof penetrates the rectilinear groove 2b to form a cam. It is engaged with the groove 3c. A lens holder 52 holds the focusing lens L4, and a helicoid 52a formed on the outer peripheral surface of the lens holder 52 is screwed into the helicoid 51a of the lens substrate 51. Further, a gear 53a integral with the output shaft of the focusing motor 53 is screwed into the helicoid 51a.
The lens holder 52 is rotated by the rotation of. When the lens holder 52 rotates, the lens holder 52, that is, the focusing lens L4 moves in the optical axis direction by the action of the helicoids 51a and 52a, whereby focusing is performed. Here, each of the lens groups L1 to L4 described above
The photographic lens optical system is constituted by.

Reference numeral 54 denotes an FPC guide member which extends in the optical axis direction between the image stabilizer 100, the lens shutter mechanism 40 and the lens holder 45, and is held by the camera body 1 slidably in the optical axis direction. . A long hole 54a in the optical axis direction is formed in the guide member 54, and a stepped screw 55 penetrating therethrough is screwed into the lens substrate 51. Therefore, the lens substrate 51 moves in the optical axis direction while being guided by the elongated hole 54a during zooming, which will be described later.
When reaches the front end of the long hole 54a, the lens substrate 51 and the guide member 54 move integrally. 56 more
Is an FPC guide member provided along the inner peripheral surface of the rear portion of the cam barrel 3.

Reference numeral 61 denotes a substantially annular vibration-proof flexible printed circuit board (hereinafter referred to as a vibration-proof FPC) attached to the image stabilizing apparatus 100.
1 is an electrical component (X, Y
The direction motor 21 and each photo interrupter 32) are mounted. Further, the lower part of the FPC 61 is pulled out to the front of the camera along the optical axis through the hole provided in the lens substrate 5, and is soldered to the mounting substrate 62 attached to the left surface (front surface) of the shutter mechanism 40 in the drawing. Connected by. Electrical components 42a in the shutter drive section 42 are connected to the mounting substrate 62 by soldering, and a flexible printed circuit board for a shutter (FP for shutters) for connecting these electrical components 42a to a driver outside the lens barrel.
C) One end of 63 is connected.

An annular mounting substrate 64 is attached to the left surface (front surface) of the lens substrate 51 holding the focusing lens unit L4 in the figure, and the focusing motor 53 is connected to the substrate 64 by soldering.
One end of a focusing flexible printed circuit board (FPC for focusing) 65 for connecting the focusing motor 53 to a driver outside the lens barrel is connected.

As shown in the enlarged view of FIG. 4, the focusing FPC 65 is pulled out toward the front of the camera through the space between the camera shake correction device 100 and the lens shutter mechanism 40 and the FPC guide member 54, and the shutter FPC 63.
It is folded back in the state of being overlapped with. Here, conductive patterns are formed on the surfaces of the FPCs 63 and 65, and the surfaces (coverlay surfaces) 63a and 65a on which the conductive patterns are formed are the mounting boards 62 and 64, respectively.
The FPCs 63 and 65 are connected to the mounting board so as to face the same direction as the soldering surfaces (left surfaces) 62a and 64a. Therefore, each FPC has a cover lay surface of the FPC 65 and the FP.
The back surface of C63 (a surface on which no conductive pattern is formed, which will be referred to as a base surface hereinafter) is overlapped in a state of being opposed.

FPC 63 bent to the rear of the camera,
Reference numeral 65 denotes an FPC while maintaining a state of being superposed on each other.
After passing through the space between the guide member 54 and the lens substrate 45, it is drawn to the rear of the camera, bent again toward the front of the camera, and then passes through the space between the FPC guide member 56 and the cam barrel 3 at the upper side to the lens mirror. It is drawn out of the cylinder, and its tip is guided to the upper part of the camera body 1.

A substrate 66 fixed to the upper part of the camera body 1.
In addition to mounting the control IC 71 shown in FIG.
A zoom driver 72 connected to the control IC 71,
The shutter driver 73 and the image stabilization motor driver 7
4, a camera shake correction motor drive amount detection circuit 75, and a focusing motor driver 76 are mounted, and a zoom motor 77 is connected to the zoom driver 72. Then, the tip ends of the FPCs 63 and 65 are pressure-contacted and connected onto the substrate 66 via a pressing plate 67 and a mounting screw 68, respectively.

In FIG. 5, the control IC 71 is also connected with a known photometry circuit 81, a distance measurement circuit 82, and a camera shake sensor 83 for detecting the camera shake amount due to camera shake. The shutter driver 73 is connected to the shutter driving electric component 42a via the mounting board 62 and the shutter FPC 63 described above, and the camera shake correction motor driver 74 and the camera shake correction motor drive amount detection circuit 75 are provided with the image stabilization function. The X and Y direction motors 21 and the photo interrupters 32 in the X and Y directions are connected via the FPC 61, the mounting substrate 62, and the shutter FPC 63, respectively. The camera shake correction motor drive amount detection circuit 75, on the basis of the output of the photo interrupter 32, drives the drive amounts and drive directions of the X and Y direction motors 21, that is, the image stabilizing lens L3.
The moving amount and the moving direction of are detected and input to the control IC 71.

Further, the focusing motor driver 7
6 includes a mounting substrate 64 and a focusing FPC 65.
The focusing motor 53 is connected via. Further, the control IC 71 is connected to a half-press switch SW1 which is turned on by half-pressing the release button, a release switch SW2 which is turned on by fully-pressing the release button, and zooming switches SW3 and SW4.

The control IC 71 activates the photometry circuit 81 and the distance measuring circuit 82 when the half-push switch SW1 is turned on, and drives the focusing motor 53 based on the detection output of the distance measuring circuit 82 to move the focusing lens L4. Focusing is performed by moving in the optical axis direction.
Further, when the release switch SW2 is turned on, the shutter drive electric component 42a is drive-controlled based on the output of the photometric circuit 81 to open / close the shutter blade 41. further,
During the shutter release, the X- and Y-direction motors 21 are drive-controlled based on the output of the camera shake sensor 83 and the output of the camera shake correction motor drive amount detection circuit 75, so that the image stabilizing lens L3 is appropriately moved in the direction orthogonal to the optical axis. It is moved to prevent image blur caused by camera shake.

Further, zooming switches SW3 and SW4
When is turned on, the control IC 71 drives the zoom motor 77 to rotate the cam barrel 3 via the gear GR. Since the cam grooves 3a, 3b, 3c move as the cam barrel 3 rotates, the lens holder 45, the lens substrates 5, 51 are driven in the optical axis direction via the cam followers 45a, 5a, 53a, respectively. Thus, the lens groups L1 to L4 are driven between the wide-angle position shown in FIG. 1 and the telephoto position shown in FIG. 2 to perform zooming. Each F along with this zooming
Since the PCs 63 and 65 are appropriately deformed as shown in the drawing, an unreasonable load is not applied to the lens groups L1 to L4.

As described above, in the present embodiment, the FPC 63 for connecting the electric components constituting the shutter mechanism 40 and the image stabilizing device 100 to the electric components outside the lens barrel, and the focusing motor 53 are connected to the electric components outside the lens barrel. Since the FPC 65 for connecting to the parts is separately provided, each FPC 63,
The width of 65 can be minimized. Therefore, it is not necessary to bend the FPC around the optical axis, and the FPC can be easily bent in the front-rear direction, and the assemblability can be improved. Further, since the FPC is generally very thin, even if the two FPCs 63 and 65 are overlapped with each other as described above, the FPC does not become so thick, so that the arrangement space can be minimized. In addition, since the FPCs 63 and 65 can be drawn out of the lens barrel from the same position by overlapping the FPCs 63 and 65 with each other, it is not necessary to provide a space for drawing out the FPCs in the front and rear of the lens barrel. The size of the lens barrel can be reduced.

In particular, in this embodiment, both the FPC 63 and the coverlay surface of the FPC 65 are arranged so that they face each other.
Since the PCs 63 and 65 are overlapped with each other, the configuration shown in FIG.
As shown in, each of the FPCs 63, 65 drawn out of the lens barrel
The tip of the FPC can be pressed and connected on the same surface of the substrate 66 without crossing or twisting.
Assembling is not hindered by the provision of the book.

Further, the above-mentioned camera shake correction motor 21,
Since two flexible printed boards are used for the three drive sources of the shutter driving electric component 42a and the focusing motor 53, the assembly work efficiency can be improved as compared with the case of using three flexible printed boards. Further, the distance between the anti-vibration driving mechanism 101 and the shutter driving mechanism 42 and the focusing mechanisms 52 and 53 changes due to the zooming of the photographing lens.
Since only the focusing motor 53 is connected to C65, at least the shape of the FPC 65 can be simplified. On the other hand, the image stabilization drive mechanism 101 and the shutter drive mechanism 4
Even if the photographic lens is zoomed by integrating the two, the distance between the mechanisms 101 and 42 does not change,
Shake correction motor 2 which is a drive source of both mechanisms 101 and 42
The shape of the FPC 63 for connecting 1 and the electric component 42a can also be simplified.

In the structure of the above embodiment, the image stabilizing lens L3 is the image stabilizing optical system, the focusing lens L4 is the focusing optical system, the focusing motor 53 and the lens holder 52 are the focusing mechanism, and the image stabilizing motor 21 is the image stabilizing device. The drive source of the drive mechanism is controlled by the shutter drive electric component 42a.
C71 is an electrical control means, FPC63 is a first flexible printed board, FPC65 is a second flexible printed board, lens substrate 5 is a first substrate, lens substrate 51 is a second substrate, and a fixed mirror. The cylinder 2, the cam cylinder 3, and the zoom motor 77 respectively configure a zooming mechanism.

In the above description, the electric components in the lens barrel are mounted on the boards 62 and 64, and one ends of the FPCs 63 and 65 are connected to the boards 62 and 64, respectively, but instead of the boards 62 and 64, , FP integrated with FPC 63 and 65
You may make it mount an electric component on C.

[0032]

According to the present invention, the drive sources of the image stabilizing drive mechanism and the shutter drive mechanism are connected to the electric control means provided outside the lens barrel by the first flexible printed circuit board,
Since the drive source of the focusing mechanism is connected to the electric control means by the second flexible printed circuit board, each drive source is connected to the electric control means by one flexible printed circuit board. The width of the flexible printed circuit board can be narrowed. Therefore, there is no need to bend the flexible printed circuit board around the optical axis according to the curvature of the lens barrel body, and thus the assembly work efficiency can be improved without increasing the size of the flexible printed circuit board. Further, there is no undesired load on the flexible printed circuit board during zooming, and there is no risk of disconnection. Furthermore, since the two flexible printed boards are used for the three drive sources, the efficiency of assembly work can be improved as compared with the case where three flexible printed boards are used. Further, the distance between the anti-vibration driving mechanism and the shutter driving mechanism and the focusing mechanism changes due to the zooming of the photographing lens. However, since only the driving source of the focusing mechanism is connected to the second flexible printed circuit board, at least the first The shape of the flexible printed circuit board 2 can be simplified and the cost can be reduced. On the other hand, the first flexible print for connecting the drive sources of both mechanisms does not change even if the taking lens is zoomed by the integration of the image stabilization drive mechanism and the shutter drive mechanism. The shape of the substrate can be simplified, and further cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a camera having a lens barrel according to the present invention, showing a state in which the lens barrel is in a wide-angle position.

FIG. 2 is a view similar to FIG. 1, showing a state in which the lens barrel is in the telephoto position.

FIG. 3 is a diagram showing details of a camera shake correction device.

FIG. 4 is an enlarged view of a main part of FIG.

FIG. 5 is a block diagram showing a control system of the camera.

[Explanation of symbols]

 1 camera body 2 fixed lens barrel 3 cam barrel 21 camera shake correction motor 32 photo interrupter 40 shutter mechanism 41 shutter blades 42 shutter drive section 42a shutter drive electric parts 54, 56 FPC guide member 61 anti-vibration FPC 63 shutter FPC 65 Focusing FPC 71 Control IC 77 Zooming motor 100 Image stabilizer 101 Drive mechanism L3 Anti-vibration lens L4 Focusing lens

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication location G03B 5/00 H 7513-2K (72) Inventor Minoru Kato 3-2-3 Marunouchi, Chiyoda-ku, Tokyo Stock Company Nikon

Claims (2)

[Claims] 1. An anti-vibration driving mechanism for electrically driving an anti-vibration optical system constituting a photographic lens in a direction different from an optical axis in order to prevent shake of a photographed image, and an integrated anti-vibration driving mechanism. A shutter drive mechanism that electrically drives a lens shutter, a focusing mechanism that electrically drives a focusing optical system that constitutes the photographing lens to perform focusing, and a drive source for the image stabilization drive mechanism and the shutter drive mechanism outside the lens barrel. A first flexible printed circuit board connected to an electric control means provided; and a second flexible printed circuit board connecting a drive source of the focusing mechanism to an electric control means provided outside the lens barrel. Lens barrel characterized by. 2. A first substrate which is integrated with the image stabilization drive mechanism and the shutter drive mechanism and which holds the image stabilization optical system movably in a direction different from the optical axis; and the focusing mechanism. A second substrate that is integrated and holds the focusing optical system so as to be movable in the optical axis direction, and drives the first and second substrates in the optical axis direction to change the focal length of the taking lens. The lens barrel according to claim 1, further comprising: a zooming mechanism that changes a distance between the image stabilizing optical system and the focusing optical system.