JP2005338298A - Blur correcting optical device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blur correcting optical device capable of correcting image blur such that an optical lens starts a moving operation relative to the main body of the bur correcting optical device at a stable initial movement voltage smoothly from the initial movement without causing frictional resistance and, even after that, the optical lens linearly, highly accurately and parallelly moves with the driving force of a driving means. <P>SOLUTION: In the blur correcting optical device 1 mounted in a camera 2, a movable part 5 having the optical lens 4 is supported on the main body 7 of the blur correcting optical device with a plurality of wires 6 in order to correct image blur. The plurality of support wires are flexible and extend parallel to the main axis B of the optical lens. One end of each support wire is held by the main body 7 of the device and the other end of it is attached to a lens holder 3. This enables the driving means 8 to move a movable part parallel to a direction perpendicular to the optical axis. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a shake correction optical apparatus that is mounted on an optical apparatus and corrects image shake due to camera shake or the like.

With regard to, for example, a camera among optical devices, in recent years, operations that are important for photographing, such as exposure determination and focusing, have been automated, and the possibility of photographing failure even by a person who is inexperienced in the operation of the camera has decreased.
As one countermeasure for this, technologies relating to a shake correction function for correcting image shake due to camera shake applied to a camera are disclosed in Japanese Patent Laid-Open No. 2003-344889 and Japanese Patent Laid-Open No. 2003-5244. ) Is proposed.
JP 2003-344889 A JP 2003-5244 A

The shake correction optical device described in Patent Document 1 supports a support frame (lens holder) having a lens by a plurality of compression coil springs (lens support members) so as to be displaceable on a plane orthogonal to the optical axis of the lens. ing. The plurality of compression coil springs are arranged radially around the lens. Therefore, when the lens moves in parallel from the center position, there is a possibility that the position shift occurs due to the twisting operation or the rotation operation.
When the lens moves in parallel from the center position, the compression coil spring on the moving direction side contracts, the compression coil spring on the opposite direction side expands, and the larger the amount of movement of the lens, the more the compression coil spring. The spring force increases. As a result, it is difficult for the lens to translate linearly and with high accuracy with respect to the driving force of the driving means.

On the other hand, in the shake correction optical device described in Patent Document 2, support shafts are radially arranged on a support frame (lens holder) that supports a lens, and the support shaft is associated with a long hole of the base plate (shake correction optical device main body). In combination, the support frame is movably supported with respect to the main plate.
In this way, the support shaft and the long hole are sliding structures using the contact surface, and frictional resistance and the like are generated. Therefore, the initial voltage becomes unstable when the support frame is first moved, and thereafter the driving force of the driving means is reduced. It was difficult for the lens to translate linearly and with high accuracy.

  The present invention has been made to solve such problems, and the optical lens starts moving smoothly with respect to the shake correction optical apparatus main body with a stable initial voltage from the initial movement without frictional resistance. Then, an object of the present invention is to provide a shake correction optical device that can correct image shake by linearly moving with high accuracy with respect to the drive force of the drive means.

In order to achieve the above-described object, the shake correction optical apparatus according to the present invention includes a movable portion having an optical lens attached to a lens holder supported by the shake correction optical apparatus main body by a plurality of lens support members, and is mounted on an optical apparatus. And a plurality of lens support members that are flexible and extend in a direction substantially parallel to the optical axis of the optical lens. By holding one side of each lens support member on the shake correction optical device main body and attaching the other side to the lens holder, the movable part can be translated in a direction perpendicular to the optical axis by a driving means. .
A drive coil constituting a magnetic circuit of the drive means for moving the movable part is provided in the movable part, and the lens support member is supplied with current from the shake correction optical device main body side to the drive coil of the movable part. It is preferable that it is comprised with the electroconductive wire in order to supply this.
In the case where a permanent magnet constituting a magnetic circuit of the driving means for moving the movable part is provided in the movable part, and a drive coil constituting the magnetic circuit is provided on the shake correction optical device main body side. There may be.
As a preferred embodiment, four lens support members are arranged around the optical lens.
It is preferable that the plurality of lens support members are arranged at substantially equal intervals in the circumferential direction around the optical lens.
Further, it is preferable that the one side of the lens support member is held by the shake correction optical device main body via a gel agent.

  Since the shake correction optical apparatus of the present invention is configured as described above, the optical lens starts a moving operation with respect to the shake correction optical apparatus body smoothly with a stable initial voltage from the initial movement without frictional resistance and the like. Thereafter, the image blur can be corrected by parallel translation with high accuracy with respect to the driving force of the driving means.

First, a system for correcting image blur due to camera shake in a camera will be described.
The camera shake applied to the camera at the time of shooting is usually a vibration of 1 Hz to 12 Hz as a frequency. In order to make it possible to take clear pictures without image blurring even when camera shake of such a frequency occurs at the shutter release time, first, the camera shake (camera shake) due to this camera shake is accurately determined. Secondly, it is necessary to correct the change of the optical axis due to camera shake by displacing the optical lens in accordance with the detected value.
Camera shake can be detected by mounting a vibration detection device on the camera 2. The vibration detection apparatus includes a detection sensor that detects acceleration, speed, and the like when the camera vibrates, and a calculation unit that appropriately calculates the output of the detection sensor for camera shake correction.
Then, based on the detection information of the vibration detection device, the shake correction optical device drives the driving unit to displace the optical lens, thereby performing image shake correction that decenters the photographing optical axis.

For this purpose, in the following embodiments, a movable portion having an optical lens attached to a lens holder is supported with respect to a shake correction optical apparatus main body by a plurality of lens support members. In addition, a plurality of flexible lens support members are arranged so as to extend in a direction substantially parallel to the optical axis of the optical lens, and one side of each lens support member is held on the shake correction optical device body and the other side is held. It is attached to the lens holder.
As a result, the optical lens starts to move relative to the shake correction optical device body with a stable initial voltage from the initial motion without frictional resistance and the like, and thereafter linearly and highly with respect to the driving force of the driving means. The purpose of correcting the image blur is realized by parallel translation with accuracy.

  In the following embodiments, a camera is shown as an example of an optical device. However, any optical device that has an optical lens and needs to correct image blur due to camera shake or the like applied to the optical device with a shake correction optical device. The present invention is also applicable to optical devices other than cameras.

Embodiments according to the present invention will be described below with reference to FIGS.
1 to 6 are views showing an embodiment of the present invention. FIG. 1 is a perspective view showing a part of a camera on which a shake correcting optical device is mounted. FIG. 2 is a view taken along the line II in FIG. FIG. 3 is an exploded perspective view of the shake correction optical apparatus, and FIGS. 4 to 6 are perspective views of the shake correction optical apparatus.
FIGS. 7 to 9 are diagrams showing modifications. FIGS. 7A and 7B are a front view and a bottom view of the shake correcting optical device, respectively, and FIGS. 8 and 9 are shake corrections shown in FIG. It is a perspective view of an optical apparatus.

The shake correction optical apparatus 1 shown in FIGS. 1 to 6 and the shake correction optical apparatus 1a shown in FIGS. 7 to 9 are mounted on a camera 2 as an optical apparatus, and image shake due to shake such as camera shake applied to the camera 2 is performed. It has a function to correct.
In the shake correction optical devices 1 and 1a, the movable portions 5 and 5a each having the optical lens 4 attached to the lens holder 3 are supported by a plurality (here, four) of support wires 6 as lens support members. An apparatus main body (hereinafter referred to as an apparatus main body) 7 is supported.
The four support wires 6 have flexibility and are arranged so as to extend in a direction substantially parallel to the optical axis B of the optical lens 4. In addition, although the case where the wire which consists of a wire material and has flexibility was shown as a lens support member, the elongate leaf | plate spring which has flexibility was used, this leaf | plate spring was extended in the direction substantially parallel to the optical axis B. It may be the case where it arranges. In addition, although the case where the four support wires 6 extend in the direction parallel to the optical axis B of the optical lens 4 is shown, the support wire 6 may be slightly inclined with respect to the optical axis B.

One side 10 of each support wire 6 is held by the apparatus main body 7, the other side 11 of the support wire 6 is attached to the lens holder 3, and the support wire 6 is bent to move the movable parts 5, 5 a to the driving means 8, 8 a. Thus, parallel movement is possible in a direction orthogonal to the optical axis B. Note that the “direction orthogonal to the optical axis B” refers to the longitudinal direction (X direction) as the first direction and the lateral direction (Y) as the second direction orthogonal to the first direction (vertical direction). Direction) and an oblique direction in a plane including the vertical direction and the horizontal direction (in the X and Y planes).
As a result, the optical lens 4 smoothly starts moving with respect to the apparatus body 7 with a stable initial voltage from the initial movement without frictional resistance, and thereafter linearly with respect to the driving force of the driving means 8 and 8a. In addition, parallel movement is performed with high accuracy, and image blur can be corrected.
Further, since there is no frictional resistance for the movable parts 5 and 5a to move in parallel, the optical lens 4 can be driven with power saving.

In the shake correcting optical apparatus 1 of the present embodiment shown in FIGS. 1 to 6, the permanent magnet of the driving means 8 is arranged on the fixed side, the driving coil is attached to the movable portion 5, and the driving coil moves. It is called "coil moving type (so-called MC type)".
In other words, in the shake correction optical apparatus 1, the permanent magnets (here, the first permanent magnet 53 and the second permanent magnet 57) that constitute the magnetic circuit of the driving means 8 for moving the movable portion 5 are the apparatus body 7. On the side.
A drive coil is provided in the movable part 5. That is, the drive coil (here, the first drive coil 15 and the second drive coil 16) constituting the magnetic circuit of the drive unit 8 is provided in the movable portion 5.

In order to supply current from the apparatus main body 7 side to the drive coils 15 and 16 on the movable part 5 side, the lens support (support wire 6) is formed of a conductive wire. If the support wire 6 is made of a conductive wire, there is no need to separately provide wiring for supplying current to the drive coils 15 and 16 on the movable portion 5 side, the current supply configuration is simplified, and the wiring Unnecessary tension can be eliminated.
In this shake correction optical apparatus 1, four support wires 6 are arranged around the optical lens 4. As a result, the minimum necessary number for supplying current to the two drive coils 15 and 16 is secured.

On the other hand, in the shake correcting optical device 1a according to the modification shown in FIGS. 7 to 10, the drive coils (here, the first drive coil 15 and the second drive coil 16) of the drive unit 8a are arranged on the fixed side. Since the permanent magnets (here, the first permanent magnet 53 and the second permanent magnet 57) are attached to the movable portion 5a, and the permanent magnets 53 and 57 move, the "moving magnet type" (So-called MM type).
That is, the first permanent magnet 53 and the second permanent magnet 57 constituting the magnetic circuit of the driving means 8a for moving the movable portion 5a are provided in the movable portion 5a, and the first drive constituting the magnetic circuit is provided. A coil 15 and a second drive coil 16 are provided on the apparatus main body 7 side.
In this case, since there is no drive coil in the movable part 5a, it is not necessary to supply current to the movable part 5a, the electric circuit can be simplified, and unnecessary tension due to wiring can be eliminated.

In the shake correction optical apparatuses 1 and 1a according to the present embodiment and the modification, a plurality (here, four) of support wires 6 as lens support members are arranged at substantially equal intervals in the circumferential direction around the optical lens 4. Has been. Therefore, the movable parts 5 and 5a can always be held uniformly in a stable state.
The movable parts 5 and 5 a are attached in a manner floating in the space via the four support wires 6. Therefore, the movable parts 5 and 5a can move the optical lens 4 freely in parallel by performing a moving operation in an arbitrary direction such as a vertical direction, a horizontal direction, and an oblique direction.
The movable parts 5, 5 a start from one or both of the first drive coil 15 and the second drive coil 16 from the basic position when no current is supplied to the first drive coil 15 and the second drive coil 16. Can be shifted (moving operation) in the vertical direction (X direction), the horizontal direction (Y direction), and the diagonal direction.

In the shake correction optical devices 1 and 1 a, one side (that is, the root portion of the support wire 6) 10 of the plurality (here, four) of the support wires 6 is held by the device main body 7 via the gel agent 17. Yes. Here, the “gel” is a two-phase colloidal system composed of a solid and a liquid, and the sol loses its fluidity.
By holding the base portion of the support wire 6 with the gel agent 17, when the movable portions 5 and 5a are moved, the amount of resonance (Q value) can be suppressed and the optical lens 4 can be prevented from resonating. . As a result, the shake correction optical devices 1 and 1a can correct image shake over a wide range from a low frequency to a high frequency.
Since the gel agent 17 is disposed at the base of the support wire 6, resonance in the resonance frequency band does not occur. Therefore, the optical lens 4 can be made to follow up to a high-order frequency band (specifically, several KHz), and correction for minute vibrations can be made even more than camera shake.
Instead of the gel agent 17, an elastic member such as rubber or elastic synthetic resin (for example, silicon resin, silicon rubber) is used, and the one side 10 of the support wire 6 is connected to the apparatus main body 7 via the elastic member. Even when it is held in the same manner, the same effect is obtained as when the root portion of the support wire 6 is held by the gel agent 17.

Next, the shake correction optical device 1 will be described in further detail.
As shown in FIGS. 1 to 6, the camera 2 has a cylindrical lens barrel 20, and a lens group 21 is positioned and held in the lens barrel 20. The shake correcting optical device 1 is attached to the inside of the lens barrel 20 so as to face the lens group 21.
When the camera 2 vibrates due to a shake such as camera shake, the shake correction optical apparatus 1 corrects a change in the optical axis due to the camera shake by displacing the optical lens 4, thereby generating an image shake even if the camera shake occurs. It makes it possible to take no clear pictures.

The apparatus body 7 of the shake correction optical apparatus 1 is mounted on the lens barrel 20 and is positioned and held. The apparatus main body 7 includes an annular portion 30 and a fan-like portion 31 extending outward from the annular portion 30 in a fan shape, and the whole is integrally formed.
In the annular portion 30, a circular opening 32 is formed concentrically at the center, and a plurality of (here, four) through-holes 33 are formed at substantially equal intervals in the circumferential direction around the opening 32. . The through hole 33 has a circular shape, and the cylindrical gel agent 17 is attached to the through hole 33.
A flexible circular first circuit board 34 having a conductive pattern is fixed to one surface of the annular portion 30. In the first circuit board 34, a plurality of (here, four) through holes 39 are formed at substantially equal intervals in the circumferential direction.
The device main body 7 to which the gel agent 17 is attached and the first circuit board 34 constitute a fixed portion 9 that supports the movable portion 5 so as to be movable.
The outer peripheral surface 38 of the fan-shaped portion 31 is formed in a partial cylindrical shape and is positioned and held in close contact with the inner peripheral surface of the lens barrel 20. The fan-shaped portion 31 has a first recess 35 formed in the vertical direction (X direction) and a second recess 36 formed in the horizontal direction (Y direction). The first recess 35 and the second recess 36 are formed on the other surface 37 of the apparatus body 7 so that the driving means 8 can be attached.

On the outer periphery of the annular lens holder 3 on which the optical lens 4 is mounted, a first holding portion 40 is integrally formed protruding in the vertical direction (X direction), and the second holding portion 41 is set in the horizontal direction ( (Projected in the Y direction).
In the lens holder 3, a plurality of (here, four) through holes 42 are formed around the optical lens 4 at substantially equal intervals in the circumferential direction. A flexible annular second circuit board 43 having a conductive pattern is fixed to the lens holder 3. The same number (four in this case) of through holes 44 are also formed in the second circuit board 43 at the same positions as the through holes 42 of the lens holder 3.

The support wire 6 is inserted through the through hole 39 of the first circuit board 34, the inside of the gel 17 attached to the apparatus body 7, the through hole 42 of the lens holder 3, and the through hole 44 of the second circuit board 43. Installed.
One side 10 of the support wire 6 is soldered to the first circuit board 34 and electrically connected to the conductive pattern. The other side 11 of the support wire 6 is soldered to the second circuit board 43 and electrically connected to the conductive pattern.
Thus, the movable portion 5 is supported on the apparatus main body 7 side by the four support wires 6 so as to be movable in parallel. In addition, although the case where the number of the support wires 6 is four was shown, multiple numbers, such as 3, 5, 6, etc., may be sufficient.

  The drive unit 8 includes a first drive unit 50 for correcting image shake due to camera vertical shake (pitching direction), and a second drive unit 51 for correcting image shake due to camera horizontal shake (yawing direction). have.

The first drive unit 50 includes a first drive coil 15, a first yoke 52, and a first permanent magnet 53. The first drive coil 15 is mounted on the first holder 40 of the lens holder 3 and is positioned and held. The first drive coil 15 is an air-core coil in which a winding is wound in an annular shape.
The first yoke 52 has one yoke part 54 and the other yoke part 55 facing each other in parallel and has a U shape, and is fixed to the first recess 35 of the apparatus body 7. Yes. The first permanent magnet 53 is disposed so as to face the first drive coil 15 and is attached to a predetermined position of the first yoke 52.
The outer surface of the other yoke portion 55 of the first yoke 52 is fixed to the first concave portion 35, and the first permanent magnet 53 is fixed to the inner surface of the other yoke portion 55. One yoke portion 54 is inserted into the hollow portion of the first drive coil 15 in a non-contact state.

The first drive coil 15, the first yoke 52, and the first permanent magnet 53 constitute a magnetic circuit of the first drive unit 50. That is, the first drive coil 15 is arranged in a magnetic field formed by the first permanent magnet 53 and the first yoke 52 facing the first drive coil 15 to constitute a magnetic circuit. . The first drive coil 15 is arranged so that the magnetic flux of the first permanent magnet 53 is linked.
When a current is supplied to the first drive coil 15 provided in the movable portion 5 via the support wire 6, an electromagnetic force is generated in the first drive coil 15, and the movable portion 5 is moved in the vertical direction by the electromagnetic force. It can move in (X direction).

The second drive unit 51 includes a second drive coil 16, a second yoke 56, and a second permanent magnet 57. The second drive coil 16 is mounted and positioned on the second holding portion 41 of the lens holder 3. The second drive coil 16 is an air-core coil in which a winding is wound in an annular shape.
The second yoke 56 has one yoke part 58 and the other yoke part 59 facing each other in parallel and has a U shape, and is fixed to the second recess 36 of the apparatus body 7. Yes. The second permanent magnet 57 is disposed to face the second drive coil 16 and is attached to a predetermined position of the second yoke 56.
The outer surface of the other yoke portion 59 of the second yoke 56 is fixed to the second recess 36, and the second permanent magnet 57 is fixed to the inner surface of the other yoke portion 59. One yoke portion 58 is inserted into the hollow portion of the second drive coil 16 in a non-contact state.

The second drive coil 16, the second yoke 56, and the second permanent magnet 57 constitute a magnetic circuit of the second drive unit 51. That is, the second drive coil 16 is arranged in a magnetic field formed by the second permanent magnet 57 and the second yoke 56 facing the second drive coil 16 to constitute a magnetic circuit. . The second drive coil 16 is arranged so that the magnetic flux of the second permanent magnet 57 is linked.
When a current is supplied to the second drive coil 16 provided in the movable portion 5 via the support wire 6, an electromagnetic force is generated in the second drive coil 16, and the movable portion 5 is laterally moved by the electromagnetic force. It is possible to move in (Y direction).
In addition, although the case where the first drive coil 15 and the second drive coil 16 are air-core coils is shown, instead of this, a winding frame (bobbin) is integrally formed on the lens holder 3, and A coil obtained by winding a winding around this winding frame may be used.

The conductive pattern of the first circuit board 34 in the fixing unit 9 is electrically connected to the electric circuit of the camera 2. Further, the conductive pattern of the second circuit board 43 is electrically connected to the first drive coil 15 and the second drive coil 16, respectively.
Therefore, from the electric circuit of the camera 2 to the first drive coil 15 and the second drive coil 16 through the conductive pattern of the first circuit board 34, the support wire 6, and the conductive pattern of the second circuit board 43. Each can supply a current.

Next, the operation of the shake correction optical apparatus 1 will be described.
When camera shake occurs due to camera shake when shooting with the camera 2, the vibration detection device mounted on the camera 2 detects acceleration, speed, etc., and appropriately calculates and outputs detection information. An electric signal based on the detection information is output to the shake correction optical apparatus 1 to control the currents flowing through the first drive coil 15 and the second drive coil 16, respectively.
When the optical lens 4 is moved in the vertical direction (X direction) by the driving means 8, a control current corresponding to the direction to be moved and the amount of movement is sent from the vibration detection device via the support wire 6 to the first drive coil. 15 is supplied.
Then, the movable portion 5 is shifted in the vertical direction (X direction) with respect to the apparatus main body 7 by the electromagnetic force generated by the first drive coil 15 disposed in the magnetic field of the first permanent magnet 53, and the optical The position of the lens 4 is adjusted.

Similarly, when the driving unit 8 moves the optical lens 4 in the lateral direction (Y direction), a control current corresponding to the direction to be moved and the amount of movement is supplied from the vibration detection device via the support wire 6 to the second. To the drive coil 16.
When the current supplied to the second drive coil 16 is controlled in this way, the movable portion 5 is moved from the apparatus main body 7 by the electromagnetic force generated by the second drive coil 16 disposed in the magnetic field of the second permanent magnet 57. The position of the optical lens 4 is adjusted by shifting in the horizontal direction (Y direction).

Further, when the optical lens 4 is moved in the oblique direction by the driving means 8, a control current corresponding to the direction to be moved and the amount of movement is transferred from the vibration detection device to the first drive coil 15 via the support wire 6. It is supplied to the second drive coil 16.
Thus, if the current supplied to the two drive coils 15 and 16 is controlled, the movable portion 5 is shifted in an oblique direction with respect to the apparatus main body 7 by the electromagnetic force generated by the two drive coils 15 and 16, so that the optical lens Adjust the position of 4.

In this way, the position of the optical lens 4 together with the movable portion 5 is controlled so as to translate in the vertical direction, the horizontal direction, and the diagonal direction.
At this time, since the support wire 6 has flexibility and is disposed so as to extend in a direction substantially parallel to the optical axis B of the optical lens 4, the four support wires 6 bend, so that the optical lens 4 is The moving operation can be smoothly started with respect to the apparatus main body 7 with a stable initial voltage from the initial motion without frictional resistance. Even after that, the optical lens 4 can be translated linearly and with high accuracy with respect to the driving force of the first driving unit 50 and the second driving unit 51 to correct image blur.

  In the shake correction optical apparatus 1a according to the modification shown in FIGS. 7 to 9, the mounting positions of the permanent magnet and the drive coil of the drive unit 8a are opposite to those of the shake correction optical apparatus 1 described above. The configuration is almost the same. Therefore, the shake correction optical apparatus 1a has the same effects as the shake correction optical apparatus 1 according to the above-described embodiment.

In the shake correcting optical device 1a, the driving unit 8a includes a first driving unit 50a for moving the movable unit 5a in the vertical direction (X direction) and a movable unit 5a for moving the movable unit 5a in the horizontal direction (Y direction). And a second drive unit 51a.
In the first drive unit 50 a, the first permanent magnet 53 is held by the first holding unit 40 of the lens holder 3. The first drive coil 15 is configured by winding a winding around a first winding frame 65, and is disposed to face the first permanent magnet 53. The first reel 65 is fitted and held in a predetermined position (for example, the first recess 35 (FIG. 3)) of the apparatus main body 7.
In the second driving unit 51 a, the second permanent magnet 57 is mounted and held on the second holding unit 41 of the lens holder 3. The second drive coil 16 is configured by winding a winding around a second winding frame 66, and the second winding frame 66 has a predetermined position (for example, the second recess 36 ( FIG. 3)) is positioned and held. The second drive coil 16 is disposed so as to face the second permanent magnet 57.

In this shake correction optical apparatus 1a, the first drive coil 15 and the second drive coil 16 are attached to the apparatus main body 7 side, so that the windings of these coils 15 and 16 are fixed to the apparatus main body 7. Further, it is directly electrically connected to the conductive pattern of the first circuit board by soldering or the like.
As described above, in the shake correcting optical device 1a, since it is not necessary to supply current to the drive coils 15 and 16 with the support wire 6, the support wire 6 may be made of a material other than the conductive material. Further, the work of electrically connecting the support wire 6 is not required, and the assembling work is simplified.

As described above, in the above-described embodiment and the modification, the apparatus main body 7 and the movable portions 5 and 5a constitute a link mechanism that is connected by a plurality of (here, four) support wires 6. And even if the movable parts 5 and 5a move because the four support wires 6 bend, the four support wires 6 always support the movable parts 5 and 5a with the same length and the same force. .
Accordingly, the movable parts 5 and 5a can always translate linearly with high accuracy and smoothly with respect to the driving force of the driving means 8 and 8a without causing a twisting operation or a rotating operation. Further, since frictional resistance or the like is not generated during the parallel movement, power can be saved, and the optical lens 4 can be smoothly moved with a small amount of power.
Since the gel agent 17 is arranged at the base portion of the support wire 6 so that resonance in the resonance frequency band does not occur, the optical lens 4 is made to follow up to a higher frequency band, and correction for minute vibrations further than camera shake is performed. It can also be done.

Although the embodiments of the present invention (including modifications, the same applies hereinafter) have been described above, the present invention is not limited to the above-described embodiments, and various modifications, additions, and the like are within the scope of the present invention. Is possible.
In the drawings, the same reference numerals denote the same or corresponding parts.

  The present invention is applicable to an optical apparatus such as a camera that needs to correct image blur due to camera shake or the like.

1 to 6 are views showing an embodiment of the present invention, and FIG. 1 is a perspective view showing a part of a camera on which a shake correcting optical device is mounted. FIG. 2 is a view taken in the direction of arrows II in FIG. 1. It is a disassembled perspective view of the said shake correction optical apparatus. It is a perspective view of the shake correction optical device. It is a perspective view of the shake correction optical device. It is a perspective view of the shake correction optical device. FIGS. 7 to 9 are views showing modifications of the present embodiment, and FIGS. 7A and 7B are a front view and a bottom view, respectively, of the shake correcting optical device. FIG. 8 is a perspective view of the shake correction optical apparatus illustrated in FIG. 7. FIG. 8 is a perspective view of the shake correction optical apparatus illustrated in FIG. 7.

Explanation of symbols

1,1a Shake correction optical device 2 Camera (optical equipment)
3 Lens holder 4 Optical lens 5, 5a Movable part 6 Support wire (lens support member)
7 shake correction optical device body 8, 8a drive means 10 one side 11 other side 15 first drive coil (drive coil)
16 Second drive coil (drive coil)
17 Gel 53 First permanent magnet (permanent magnet)
57 Second permanent magnet (permanent magnet)
B Optical axis

Claims (6)

A movable part having an optical lens attached to the lens holder is supported on the shake correction optical device main body by a plurality of lens support members,
A shake correction optical apparatus that is mounted on an optical device and corrects image shake,
The plurality of lens support members have flexibility and are arranged extending in a direction substantially parallel to the optical axis of the optical lens,
By holding one side of each lens support member on the shake correcting optical device main body and attaching the other side to the lens holder, the movable part can be translated in a direction perpendicular to the optical axis by a driving means. And a shake correction optical apparatus. A drive coil constituting a magnetic circuit of the drive means for moving the movable part is provided in the movable part,
2. The shake correction according to claim 1, wherein the lens support member includes a conductive wire for supplying a current from the shake correction optical apparatus main body side to the drive coil of the movable portion. Optical device. A permanent magnet constituting a magnetic circuit of the driving means for moving the movable part is provided in the movable part,
The shake correction optical apparatus according to claim 1, wherein a drive coil constituting the magnetic circuit is provided on the shake correction optical apparatus main body side.   4. The shake correction optical apparatus according to claim 1, wherein four lens support members are arranged around the optical lens. 5.   5. The shake correction optical apparatus according to claim 1, wherein the plurality of lens support members are arranged at substantially equal intervals in a circumferential direction around the optical lens.   6. The shake correction optical apparatus according to claim 1, wherein the one side of the lens support member is held by the shake correction optical apparatus main body via a gel agent.

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