JP2000180912A - Image blur correcting device and optical equipment provided with the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent needless vibration from being caused in a magnet, etc., and to stably perform image blur correcting action by integrally holding the magnet in an image blur correction means in a state where it is energized by the image blur correction means. SOLUTION: The magnets 6p and 6y are magnetically connected with yokes 5p and 5y. The yokes 5p and 5y are respectively fixed in a supporting frame 1 through a machine screw in accordace with pitch and yaw driving directions, At such a time, the magnets 6p and 6y get into an arm part 1c provided in the supporting frame 1 and prevent the positional deviation of the magnet. Then, 1st projections 1g and 1h are provided at the edge of the arm part 1c of the supporting frame and projection parts 1i and 1j are provided at the root thereof. Since the fixed part by the machine screw is provided inside the projection, the yokes 5p and 5y are fixed and held in a state where they are bent by a very small amount with the projections 1g, 1h, 1i and 1j as fulcrums in the case of fixing the yokes 5p and 5y. Namely, they are fixed in a state where they are energized by the supporting frame with the magnets 6p and 6y.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image blur correction device for correcting an image blur caused by camera shake in an optical device or the like, and an optical device equipped with the image blur correction device.

[0002]

2. Description of the Related Art In a current camera, all operations important for photography, such as exposure determination and focusing, have been automated, and even a person unskilled in camera operation has a very low possibility of failing in photography. I have.

Recently, a system for correcting an image blur caused by a camera shake applied to a camera has been studied, and a factor which causes a photographer to fail in photographing has almost disappeared.

Here, a system for correcting image blur caused by camera shake will be briefly described.

[0005] The camera shake at the time of photographing is usually a vibration of 1 Hz to 12 Hz as a frequency. However, even if such camera shake occurs at the time of release of the shutter, it is possible to take a picture without image shake. As a basic idea, it is necessary to detect the camera shake caused by the camera shake and to displace the correction lens according to the detected value. Therefore, in order to be able to take a picture in which image shake does not occur even if camera shake occurs, first, the camera vibration must be accurately detected, and second, the optical axis change due to the camera vibration must be corrected. It is necessary to make corrections.

In principle, this vibration (camera shake) is detected by vibration detecting means for detecting acceleration, speed, etc.
This can be achieved by mounting a camera shake detecting means, which electrically or mechanically integrates an output signal of the vibration detecting means and outputs a displacement, on a camera. Then, the image blur correction can be performed by controlling a shake correction unit in a shake correction device mounted to displace the correction lens based on the detection information and change the photographing optical axis.

Here, an outline of an anti-shake system using a shake detecting means will be described with reference to FIG. FIG.
Is a diagram of a system that suppresses image blur caused by camera vertical blur (pitch direction) 81p and camera horizontal blur (yaw direction) 81y in the illustrated arrow 81 direction.

In the figure, reference numeral 82 denotes a lens barrel, 83p, 84y
Are shake detection means for detecting camera vertical shake and camera horizontal shake, respectively.
4y. 85 is a shake correction optical means (86p,
Reference numeral 86y denotes a coil that applies a thrust to the shake correction optical unit 85, and 87p and 87y denote detection elements that detect the position of the correction optical unit 85. The correction optical unit 85 has a position control loop. Driving is performed with the outputs of 83p and 83y as target values, and stability on the image plane 88 is ensured.

The present applicant also discloses Japanese Patent Application Laid-Open No. 9-43661.
In Japanese Patent Application Laid-Open No. H10-107, a coil is arranged on the shake correcting means side, a magnet is arranged on the fixed part side, and the optical axis direction positioning is performed by a spring. No. 26782 proposes a shake correcting device having a structure in which a magnet is arranged on the shake correcting means side and a coil is arranged on the fixed portion side, and positioning in the optical axis direction is performed by a cam and a pin.

[0010]

However, in the shake correcting device described in Japanese Patent Application Laid-Open No. 9-43661 or the like, a coil is arranged in the shake correcting means and a magnet is arranged on the fixed portion side. Then, the method of energizing the coil is difficult, which has been a factor of increasing the size of the shake correction device. In addition, since the vibration correcting means is supported by a plurality of members in the optical axis direction, the number of components is large, and the vibration correcting means is constantly urged in the optical axis direction, which affects the followability of the vibration correcting means itself. .

In the apparatus described in Japanese Patent Application Laid-Open No. 9-43661, a magnet is arranged on the shake correction means side and a coil is arranged on the fixed part side, so that the apparatus is compact. However, since the magnet fixed to the shake correction means is fixed and held near the end (root) of the yoke which is magnetically coupled, the fixed holding portion of the yoke is supported by the presence of the magnet having mass. The deflection at the tip of the yoke is likely to occur.

Further, since the positioning in the optical axis direction is performed only by the cam and the pin, there is a slight play in the optical axis direction. For these reasons, during the shake correction drive, the shake correction means itself may slightly move during the shake correction drive, or vibration may occur in the shake correction means due to other external factors (sudden vibration, etc.). However, in such a case, there is a possibility that the yoke magnetically coupled to the magnet may cause vibration about the fixed holding portion with the shake correcting means as a fulcrum.

(Object of the Invention) The present invention has been made in view of the above-mentioned circumstances, and the above-mentioned vibration is generated in a member for fixing the member such as the yoke to an image blur correcting means or the like which may generate vibration. An object of the present invention is to provide an image blur correction device capable of fixing a member such as the yoke to the movable member so as not to vibrate, and an optical apparatus equipped with the image blur correction device.

[0014]

In order to achieve the above object,
The invention according to claim 1 of the present application is directed to an image blur correction unit that corrects image blur by moving in an optical path, a coil that is integrally held in a device, and an image blur correction unit that is integrated with the image blur correction unit. And a driving means for driving the image blur correction means, comprising: a magnet to be held; and a driving means for driving the image blur correction means, wherein the magnet is integrally held by the image blur correction means. An image blur correction device having a magnet holding means fixed in a state of being biased by the image blur correction means, whereby the magnet is held by the image blur correction means by the magnet holding means; Is fixed and held in a state of being biased by the image blur correction means, and is integrated with the image blur correction means, so that the magnet and the magnet holding means are unnecessary. It is intended to prevent the occurrence of motion.

According to a second aspect of the present invention, the magnet holding means comprises a magnetic yoke.
The image blur correction device according to claim 1, wherein the magnet is magnetically coupled to the yoke and is integrally held by the image blur correction means. With this configuration, the magnet and the yoke for holding the magnet are provided. The purpose is to prevent occurrence of unnecessary vibration.

According to a third aspect of the present invention, at least two supporting portions are provided on a mounting portion of the image blur correcting device to which the magnet holding device is mounted, and the at least two supporting portions are provided. A fixed holding portion provided between the image blur correction devices.
With this configuration, the magnet holding unit is minutely elastically deformed by the action of the support unit and the fixed holding unit, and is always urged by the image blur correction unit to reliably perform the fixed holding. This is to prevent unnecessary vibration of the means.

The invention according to claim 4 of the present application is the image blur correction device according to claim 3, wherein at least one of the support portions and the fixed holding portion have different heights. With this configuration, the magnet holding means is slightly elastically deformed by the action of the support section and the fixed holding section, and is always urged by the image blur correction means to reliably perform the fixed holding. Further, it is intended to prevent unnecessary vibration of the magnet holding means.

According to a fifth aspect of the present invention, there is provided the image blur correction device according to the third aspect, wherein at least one of the support portions comprises a projecting portion. Due to the action of the fixed holding unit, the magnet holding unit is minutely elastically deformed, and is always urged by the image blur correction unit to reliably perform the fixed holding, thereby generating unnecessary vibration of the magnet and the magnet holding unit. We are trying to prevent it.

The invention according to claim 6 of the present application is the image blur correction device according to claim 3, wherein the fixed holding portion is fixedly held by a screw. With this configuration, the supporting portion and the fixed holding portion are fixed. Due to the action of the part, the magnet holding means is slightly elastically deformed, and is always urged by the image blur correcting means to securely hold the magnet and prevent unnecessary vibration of the magnet and the magnet holding means. In addition, the magnet holding means is fixed and held by a simple screw to improve workability.

In the invention according to claim 7 of the present application, the image blur correcting means comprises an optical member and a holding frame for integrally holding the optical member, and the holding means is fixedly held on the holding frame. With this configuration, it is intended to prevent unnecessary vibration of the magnet and the magnet holding means.

The invention according to claim 8 of the present application is directed to an image blur correcting means for correcting an image blur by moving in an optical path, a coil which is integrally held in a device, and an image blur correcting means. Including an integrally held magnet,
An optical apparatus equipped with an image blur correction device having a driving unit for driving the image blur correction unit, and for holding the magnet integrally with the image blur correction unit, An optical apparatus equipped with an image blur correction device having a magnet holding means fixed in a state of being biased by the image blur correction means, and this configuration prevents generation of unnecessary vibration of the magnet and the magnet holding means. We are trying to prevent it.

[0022]

1 to 9 show a first embodiment of the present invention.
FIG. 1 is a diagram showing an optical apparatus having a shake correction device according to an embodiment. FIG. 1 is an exploded perspective view showing components of a main part of the shake correction device according to the present embodiment, and FIG. FIG. 3 is an enlarged front view of a portion of the support frame 1 shown in FIGS. 1 and 2 to which the yoke 5 and the magnet 6 are attached, showing the support frame 1 and members attached to the support frame 1.

FIG. 4 is viewed from the left side of FIG. 1 (for explanation,
The flexible circuit board 10 is detached so that the inside can be seen.) FIG. 5 is a view of the shake correction device viewed from the opposite side to FIG. 4, and FIG. 6 is a stepping motor configured near the portion of FIG. 1B. 7 is a cross-sectional view taken along the line AA of FIG. 3, FIG. 8 is a view of a state in which the yoke 5 is attached to the support frame 1 viewed from the direction of the arrow in FIG. 5, and FIG. FIG. 2 is a cross-sectional view of the entire optical device of the present embodiment.

The configuration of a shake correction apparatus according to an embodiment of the present invention will be described below with reference to FIGS. The correction lens L1 is held by the support frame 1 and performs shake correction by moving the plane perpendicular to the optical axis with respect to the base plate 2. Ground plate 2
Are provided with sliding cams 2a on the same plane perpendicular to the optical axis in three directions. Reference numeral 7 denotes a sliding pin, which is pressed into three holes 1a provided in the supporting frame 1 via a sliding cam 2a, so that the supporting frame 1 slides on the ground plate 2 with the sliding pin 7. Although they are connected by the cam 2a and their position is regulated in the optical axis direction, they can be moved in all directions on the plane perpendicular to the optical axis.

The sliding cam 2a is formed inside three concave portions 2b where the outer diameter of the shake correcting device is one step smaller. Reference numeral 2c denotes a hole for supporting the main shake correction device, and is provided at three places on the outer periphery. By inserting another member, such as a roller, into this hole, the shake correction device can be supported in the optical device.

6p and 6y are magnets and yoke 5
It is magnetically coupled to p and 5y. Reference numerals 5p and 5y denote yokes, which are fixed to the support frame 1 by screws 12 in accordance with the pitch (vertical direction) and yaw (horizontal direction) driving directions.
At this time, the magnets 6p and 6y enter between the arms 1c provided on the support frame 1 to prevent the magnets from being displaced. At the tip of the arm 1c of the support frame, first projections 1g, 1h and root projections 1i, 1j are provided.

The fixing portion by the screw 12 is provided inside these projections (the relationship after assembling is shown in FIGS. 4 and 7).
When the yoke is fixed, as shown in FIG. 8, the yoke is fixed and held in a state in which the yoke is slightly bent with the projection as a fulcrum. That is, since the fixing frame is urged by the support frame together with the magnet and is fixed in a state, it is possible to prevent bending with the fixing holding portion fixed by the screw as a fulcrum. In addition, the yoke magnetically coupled to the magnet also prevents unnecessary vibration about the fixed holding portion with the shake correction means as a fulcrum due to other external factors (rapid vibration or the like).

On the other hand, the coil unit 8p,
8y is fixed by screws 14 at a position facing the magnet. A method for assembling the coil unit will be described later. The coil unit 8p (similarly to 8y) has a resin coil frame 8a and a wound coil portion 8c integrally formed, and a terminal pin which is a conductive member press-fit into the first step 8e of the coil frame 8a. 8b is connected to both terminals of the coil winding to form a unit. Further, the terminal pins 8b are penetrated and soldered to the flexible circuit board 10 described later, and are electrically connected.

By energizing the coils of the two driving means (lens driving means) comprising a magnet and a coil opposed to each other, the vibration correcting means comprising the correcting lens L1 and the support frame 1 causes the vibration correcting means to move in the pitch direction (P) and It is driven in the yaw direction (Y), and the image blur is corrected. The pitch direction and the yaw direction are the vertical direction and the horizontal direction, respectively.
This is due to the fact that the shake detecting means detects the shake related to the optical device separately into a pitch component and a yaw component.

Reference numeral 3 denotes a lock ring (locking member).
When the output of the stepping motor unit (lock driving means) is transmitted to the gear unit 3a, the unit rotates about the optical axis and locks (locks) the support frame 1, that is, the correction lens L1 at a predetermined position. ). The locking operation / stepping motor section will be described later. Reference numeral 4 denotes a rotation restricting member, which locks two shaft portions 4a with a lock ring 3.
Of the support frame 1 around the optical axis of the support frame 1 by sliding into a long hole 1d (shape not shown) provided in the support frame 1 through the hole 3d of the base plate 2 and the hole 2g of the base plate 2. Is regulated (R direction).

Reference numeral 10 denotes a flexible circuit board having a multi-layered conductive layer. The photoreflector 16p is provided on the support frame 1 side for detecting a position corresponding to each of the pitch and yaw movement positions.
16y are mounted, and a plurality of electric elements 15 constituting a circuit and the like for position detection are mounted on the opposite surface. Also, a terminal 194 of a stepping motor described later.
a, 194b, 195a, 195b and the coil unit 8
The terminals 8b of p and 8y are also soldered after penetrating through holes provided in the flexible circuit board 10, and are fixed.

A portion 10a of the flexible circuit board 10 is an extension connected to another circuit board.
Is fixedly supported by a protrusion 2c provided on the main plate 2 with a double-sided tape or the like in order to prevent interference with other components. Also,
The base plate 2 is provided with a chamfered portion 2d so that no stress is applied to the bent portion of the extension portion 10a. The flexible circuit board 10 is fixed to the base plate 2 by screws 13.

Reference numerals 9p and 9y denote target members for position detection. A black-and-white pattern is printed so that the outputs of the photoreflectors 16p and 16y change at a fixed rate in accordance with the position of the correction means. , 5y. The positioning of the target members 9p, 9y and the yokes 5p, 5y is determined by the holes 9a, 5a and the dowel 1e of the support frame. Numeral 11 denotes an assist spring, two of which are arranged to face each other so as to prevent destruction of the correction lens L1, the support frame 1 and the like, and assist in returning to the center position. Each hook is hooked on the hook 2f of the base plate 2 and the hook 1f of the support frame.

As shown in FIG. 4, the lock driving means is provided on the opposite side to the optical axis of the two lens driving means ((P, Y) constituted by 5, 6, and 8) with substantially the same optical axis perpendicular to the optical axis. By arranging them in the plane, the above-mentioned concave portion 2b of the base plate can be provided between the respective drive units, and the shake correction device itself can be made compact by this arrangement.

Next, a stepping motor for driving the locking member 3 will be described with reference to FIG. The components of these stepping motors are configured in section B shown in FIG.

Reference numeral 191 denotes a stator yoke in which a plurality (six) of soft magnetic plates are laminated and fixed, and the soft magnetic plates are unitized by laminating and laminating plates of the same shape. I have. 192 is the same part as the stator yoke 1 and can be the other stator yoke of the two-phase stepping motor. Stator yoke 1
Numeral 92 is used by turning the stator yoke 191 upside down.

Numeral 193 denotes a rotor made of a plastic magnet which is rotatable according to the excitation state of the stator yokes 191 and 192. The outer periphery of the rotor is divided and alternately magnetized, and the rotor is anisotropically oriented. A gear 193a for transmitting the rotational force of the rotor 193 to the gear portion 3a of the locking member 3 is provided integrally. 194 and 195 are the stator yokes 19, respectively.
1. A coil for exciting the stator yoke 192, and the coil 194 and the coil 195 are composed of the same components.

The coil 194 and the coil 195 are connected to the connection terminal 1.
The configuration is such that the stator yokes 191 and 192 are excited by being energized from 94a, 194b, 195a and 195b, respectively. Stator yoke 19
1. The stator yoke 192 is a shaft 2e provided on the main plate 2.
The rotor 193 is also rotatably supported by the main plate 2 with the rotating shaft 193b.

Reference numeral 196 denotes a motor case lid which supports the rotation shaft 193c of the rotor 193 by a rotation shaft 196f and hooks the claw portions 196a to 196e into the groove 2h of the main plate 2 to thereby step the electromagnetic actuator. The motor 19 is unitized.

Next, the operation of the stepping motor 19 having the above configuration will be described. When a current is applied to the coils 194 and 195 from the connection terminals 194a, 194b, 195a and 195b, a magnetic field is generated in the stator yokes 191 and 192 and acts with the magnetic field of the magnet rotor 193 to form a closed magnetic path. At this time, if the coil 195 is not energized, the magnetic path generated by the energized coil 194 becomes dominant, and a rotational torque is generated in the magnet rotor 193 (the same applies when only the coil 195 is energized). Similarly, when a current is supplied to the stator rotors 191 and 192, magnetic paths are formed in the stator yokes 191 and 192, respectively, and the stator yokes 191 and 192 interact with the magnet rotor 193 so that the
93 is given a rotating torque.

Therefore, the stepping motor, which is well known in the art, can be driven by energizing both coils 194 and 195 while sequentially switching the current direction, and the gear portion 193 a of the magnet rotor 193 and the locking member 3 can be driven. The engagement with the gear portion 3a allows the locking member 3 to be rotated by a predetermined angle.

A locking member 3 is rotatably supported on the base plate 2, and a gear 193a provided on a rotor 193 of the stepping motor unit engages with the gear 3a to rotate the locking member 3 in the rotation direction. Can be driven. The four cams 3b provided on the locking member 3 lock the support frame 1 in relation to the four projections 1b provided on the support frame 1 (only two locations are visible in FIG. 1). By performing unlocking, it functions as locking means.

That is, when the locking member 3 is rotated counterclockwise (as viewed from the front side (substrate side)), the cam portion 3b of the locking member 3 separates from the projection 1b of the support frame 1, so that the support frame 1 Is free with respect to the locking member 3, but when the locking member 3 is rotated clockwise, the innermost circumferential portion 3c of the cam portion 3b is rotated.
Contacts the projection 1b, and the support frame 1 and the locking member 3 are engaged. That is, the support frame 1 is locked to the main plate 2.

Accordingly, when performing the shake correction, the locking member 3 is driven counterclockwise by the stepping motor to make the support frame 1 free (unlocked) with respect to the locking member 3, while the shake is prevented. When the correction is completed, the locking member 3 is rotated clockwise to bring the support frame 1 into a state in which the support frame 1 is locked with respect to the main plate 2 (locked state).

However, when the shake correction drive is performed by the above-described configuration, the support frame 1 can freely move in the pitch direction (P) and the yaw direction (Y) (shake correction direction) shown in FIG. Move in the rotation direction R as well. Since this rotation deteriorates the shake correction accuracy, the present embodiment employs the following method to reduce the influence of the rotation.

As shown in FIG. 1, two shaft portions 4a extending from the rotation regulating member 4 pass through holes 3d provided in the locking member 3 and holes 2g provided in the main plate, respectively. The support frame 1 can be fitted and slid in the long groove of 1d.

The rotation restricting member 4 includes a claw 2 provided on the main plate 2.
It is regulated in the optical axis direction by j and 2k (see FIG. 5). Also,
The sliding surfaces 4b, 4c, 4d, and 4e of the rotation restricting member 4 are provided on the side surfaces of the protrusion 2m and the protrusion 2n around the shaft support of the rotor magnet 193 constituting the stepping motor.
, And restricts the rotation restricting member 4 so that the rotation restricting member 4 can be moved only in the direction B in FIG.

With the above-described configuration, the support frame 1 cannot rotate with respect to the base plate 2, so that it can be moved only in the pitch direction and the yaw direction by the driving force of the magnet 6 and the coil unit 8. can do.
In detail, in the direction B of FIG. 5, the support frame 1 moves with respect to the main plate together with the rotation restricting member 4, and only the support frame moves with respect to the main plate 2 by the shaft 4a in the direction perpendicular to B (direction C). Move. The opening of the rotation restricting member moves in the direction B (b) and the direction perpendicular to the direction B (the direction C), which moves together with the support frame 1.
The relationship of (c) is (b) <(c), which is substantially elliptical.

As a result, harmful light passing through the space created by the movement of the support frame 1 can be effectively cut.

Next, a method of assembling the coil units 8p and 8y will be described with reference to FIGS.

The coil unit 8p (8y also has the following 8
(described only with p) is first inserted into the ground plane from the direction perpendicular to the optical axis so as to follow the coil mounting surface 2s of the ground plane 2. When climbing over the positioning projection 2r having two slopes provided on the 2s surface, the coil presser 2p,
2q and the resin part of the coil unit are elastically deformed. After that, when it is further inserted, the 2nd hole is inserted into the hole 8f of the coil unit 8p.
r enters, and the coil unit is positioned. Thereafter, the coil unit 8p is pulled in and fixed by the screw 14 from the back side. (A screw goes into the hole 8g)

In the case of driving by the coil and the magnet as in this embodiment, since the magnetic force is greatly lost due to the air gap, the driving force cannot be increased unless the distance between the coil unit 8p and the magnet 6p is reduced. Therefore, since this interval precision is severe, in this embodiment, by providing the base plate with 2p and 2q, the coil is hardly detached from the positioning protrusion 2r, and the coil unit is prevented from warping when being pulled in by the screw 14, Interference with magnets and the like is avoided.

The coil unit 8p is connected to the terminal 8b.
Is provided in two directions higher than the press-fitted step 8e. This is to prevent disconnection of the coil 8c (the end is connected to 8b) when inserting the coil unit 8p from the direction perpendicular to the optical axis. With the above configuration, the workability of assembling the coil unit is improved.

Next, an optical apparatus incorporating the above-described shake correcting apparatus will be described with reference to FIG. This embodiment is an interchangeable zoom lens for a single-lens reflex, and is an optical apparatus having six groups of L11 to L16. All the lens units are moved by the zoom operation, and the L12 unit is moved by the focus operation. Further, the L13 group and the L16 group move integrally,
The 15th group performs a shake correction operation.

Reference numeral 201 denotes a filter frame, in which a filter is attached to an inner thread portion provided at the tip, and an accessory such as a hood is attached to an outer bayonet portion. The first lens barrel 224 holding the L11 group is fixed inside. Reference numeral 202 denotes a zoom operation ring, which is rotated integrally with the cam ring 210 by a zoom key 203.
Therefore, by rotating the operation ring 202, the cam ring 210 is rotated, and L12 to L16 can be moved forward and backward in the optical axis direction based on the cam grooves provided in the cam ring.

L11 allows the intermediate cylinder 231 to advance and retreat by the lead groove provided inside by the rotation of the operation ring 202, and at the same time, the filter frame 201 can also advance and retreat in the optical axis direction. Reference numeral 204 denotes a roller for regulating the thrust position of the operation ring. A shake detection device 205 is connected to the main substrate 215 by a flexible circuit board (not shown).
Reference numeral 206 indicated by a shaded portion denotes a focus unit, which is connected to the main board 215 and performs focus driving. Also, the focus operation can be performed by rotating the manual ring 221. In the present case, the detailed description of this unit is publicly known and therefore will be omitted. 208
Is an exterior ring, the scale window 209, the ON of the image stabilizer,
A switch 219 capable of selecting OFF is provided.

A fixed cylinder 211 couples the guide cylinder 228 and a mount 212 for connecting to a camera. 213
Reference numeral 215 denotes a back cover, and 215 denotes a contact block for making an electrical connection with the camera, and is connected to the main board 216 by a flexible circuit board.

Reference numeral 223 denotes a second lens barrel, which holds the L12 lens group. Reference numeral 225 denotes a sub cam ring which changes the optical axis advance / retreat amount due to focusing of the L12 group according to the focal length.
Reference numeral 226 denotes a roller for the second lens barrel. An aperture unit 229 is electrically connected to the main board 216 by a flexible circuit board. Also, the aperture unit 229 is
It is fixed to the third lens barrel 217 holding the L13 group.

Reference numeral 218 denotes a roller for the third lens barrel. As shown in this figure, in this embodiment, the L13 group and the L16 group advance and retreat in the optical axis direction integrally, so that the third group lens barrel 217 and the sixth group mirror are used at three places using the concave portion of the outer shape of the shake correction device 220. The tube 214 is connected. That is, three portions of the third lens barrel 217 extend rearward so as to enter the same phase as the three concave portions provided on the outer shape of the ground plate 2 of the shake correction device.

The outer diameter of the third lens barrel is the same as the outer diameter of the shake correcting device, and the third lens barrel slides on the inner circumference of the guide cylinder 228.
Therefore, it is understood that the front and rear sides of the shake correction device are connected, but the outer diameter has not increased. Reference numeral 207 denotes a fourth-group barrel holding the L14 group, which is connected to the cam ring by rollers 227. Reference numeral 230 denotes a roller for a shake correcting device, which fits and slides in each groove of the cam ring and the guide cylinder. Reference numeral 222 denotes an encoder unit that generates a zoom signal.

As described above, it goes without saying that the optical apparatus provided with the shake correction device is not limited to the interchangeable lens for a single-lens reflex camera.

(Second Embodiment of the Invention) Next, a second embodiment of the present invention will be described with reference to FIGS. 10, 11, and 12. FIG. In this embodiment, parts other than the support frame have the same configuration as in the first embodiment, and the same reference numerals in each drawing denote the same components as those in the first embodiment. I have.

FIG. 10 is an enlarged perspective view showing the support frame 101 and each member attached to the support frame 101, and FIG.
FIG. 12 is an enlarged front view of a portion where the yoke 5 and the magnet 6 are attached to the support frame 101 shown in FIG.

The support frame 101 is provided with two projections 101a and 101b for one drive unit.
In this embodiment, the projections 1g and 1h are removed). Therefore, when attaching the yoke 5p to the support frame 101, 101a, 101b, and two
01c is supported at four points at the tip of the arm, and is supported with a slight amount of inclination with respect to the shake correction drive surface without affecting the shake correction drive.

The fixing of the yoke 5p is fixed by the screw 12, but since this fixing portion is provided inside the supporting portion including the projection, when fixing the yoke 5p, it is shown in FIG. As a result, it is fixed and held in a state where it is slightly bent with the support point including the protrusion as a fulcrum.

Accordingly, when the yoke 5p is fixed by the screw 12, the tip end side of the yoke 5p is fixed in a state of being urged in the direction of arrow F in FIG. In other words, since it is urged to the support frame together with the magnet and is fixed in a state, it is possible to prevent bending and vibration with the fixed holding portion fixed with screws as a fulcrum.

Also, due to other external factors (rapid vibration, etc.), the support frame 101 prevents the yoke magnetically coupled to the magnet from generating unnecessary vibration about the fixed holding portion with the shake correcting means as a fulcrum. To prevent this.
Note that the configuration is the same for the yaw direction.

(Third Embodiment of the Invention) Next, a third embodiment of the present invention will be described with reference to FIGS.
In the present embodiment, parts other than the support frame have the same configuration as the first embodiment, and the same reference numerals in each drawing denote the same components as those in the first embodiment. I have.

FIG. 13 is an enlarged perspective view showing the support frame 105 and each member attached to the support frame 105, and FIG. 14 is a view of the state where the yoke 105 is attached to the support frame 105 as viewed from the direction of the arrow in FIG. .

The yoke 105p has protrusions 105 at four corners.
a, 105b, 105c, and 105d are provided.
Since the fixing portion of the yoke by the screw 12 is provided on the inner side of the protrusion, the yoke is fixed and held in a state where the yoke is slightly bent with the protrusion as a fulcrum.

Therefore, when the screw 12 is fixed by the screw 12, FIG.
As shown in FIG. 4, the yoke 105p is fixed while being urged by the support frame 111 due to the rigidity of the yoke itself. In other words, since it is urged to the support frame together with the magnet and is fixed in a state, it is possible to prevent bending and vibration with the fixed holding portion fixed with screws as a fulcrum.

In addition, due to other external factors (abrupt vibrations or the like), the yoke magnetically coupled to the magnet applies unnecessary vibration to the support frame 111 with the fixed holding portion for the shake correcting means as a fulcrum. It is prevented by vigor. Note that the configuration is the same for the yaw direction.

As described above, by fixing the yoke to the shake correcting means (support frame) in an urged state, unnecessary vibration generated in the shake correcting device, deflection of the yoke itself,
Vibration can be prevented.

The apparatus according to each of the above embodiments can be applied to various optical apparatuses. For example, the apparatus can be applied to silver halide cameras, video cameras, interchangeable lenses applied to cameras, observation optical equipment such as binoculars, and the like. Can be.

In each of the above embodiments, the present invention has been described as being applied to a device which drives a movable optical means for image blur correction and deflects a light beam. It can also be applied to a device for deflecting.

In each of the above-described embodiments, an example of a configuration for attaching the yoke as a part of the driving means for driving the correcting optical means in the direction perpendicular to the optical axis to the support frame of the correcting optical means is described. Although shown, the present invention is not limited to the configuration of each of the embodiments, and may be applied to a driving device for operating other movable units or operating a movable unit operating in another manner. Therefore, the present invention may be applied to a driving device. Further, the present invention may be applied to fix members other than the yoke.

[0077]

According to the present invention, a driving means for driving the image blur correction means, which includes a coil integral with the apparatus and a magnet integrally held by the movable image blur correction means, is provided. In an image blur correction device having an image blur correction device, and in an optical apparatus equipped with such an image blur correction device, a magnet can be stably fixed and held by the image blur correction device, and fixed to the image blur correction device. It is possible to prevent unnecessary vibrations from being generated in the magnet holding means and the magnet to be performed, and it is possible to stably perform the image blur correction operation. Further, the optical performance can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing main components of a shake correction apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a support frame 1 and members attached to the support frame 1 shown in FIG.

FIG. 3 is an enlarged front view of a portion where the yoke 5 and the magnet 6 of the support frame 1 shown in FIGS.

FIG. 4 is a diagram viewed from the left direction in FIG. 1;

FIG. 5 is a diagram of the shake correction apparatus viewed from a side opposite to FIG. 4;

FIG. 6 is a perspective view of a stepping motor configured in the vicinity of a portion B in FIG. 1 as viewed from another direction.

FIG. 7 is a sectional view taken along line AA of FIG. 3;

8 is a view showing a state in which the yoke 5 is attached to the support frame 1 as viewed from the direction of the arrow in FIG.

FIG. 9 is a cross-sectional view of the entire optical apparatus according to the first embodiment of the present invention.

FIG. 10 is an enlarged perspective view illustrating a support frame 101 and members mounted on the support frame 101 of the shake correction apparatus according to the second embodiment of the present invention.

FIG. 11 shows a yoke 5 of the support frame 101 shown in FIG.
FIG. 3 is an enlarged front view of a portion to which a magnet 6 is attached.

12 is a view showing a state in which the yoke 5 is attached to the support frame 101, as viewed from the direction of the arrow in FIG.

FIG. 13 is an enlarged perspective view showing a support frame 105 and members attached to the support frame 105 of the shake correction apparatus according to the third embodiment of the present invention.

14 is a view showing a state in which the yoke 105 is attached to the support frame 105, as viewed from the direction of the arrow in FIG.

FIG. 15 is a schematic diagram showing a configuration of a conventional image blur correction device.

[Explanation of symbols]

 L1 Lens group for shake correction means 1 Support frame 2 Base plate 3 Locking member 4 Rotation restricting member 5 Yoke 6 Magnet 7 Slide pin 8 Coil unit 10 Flexible circuit board 101 Support frame 105 Yoke 111 Support frame

Claims (8)

[Claims] 1. An image blur correction means for correcting an image blur by moving in an optical path, a coil integrally held by an apparatus, and a magnet integrally held by the image blur correction means. An image blur correction device having a driving unit for driving the image blur correction unit, wherein the magnet is integrally held by the image blur correction unit, and An image blur correction device comprising a magnet holding means fixed in a biased state. 2. The apparatus according to claim 1, wherein said magnet holding means comprises a magnetic yoke, and said magnet is magnetically coupled to said yoke to be integrally held by said image blur correction means. Image stabilizer. 3. The image blur correction device, wherein the mounting portion to which the magnet holding device is mounted is provided with at least two support portions, and a fixed holding portion is provided between the at least two support portions. Claim 1 characterized by the following:
Image stabilizer. 4. The image blur correction device according to claim 3, wherein at least one of the support portions and the fixed holding portion have different heights. 5. The image blur correction device according to claim 3, wherein at least one of said support portions comprises a protrusion. 6. The image blur correction device according to claim 3, wherein the fixed holding unit performs fixed holding with a screw. 7. The image blur correcting means comprises an optical member and a holding frame for integrally holding the optical member, and the magnet holding means is fixed and held by the holding frame. 1. An image blur correction device. 8. An image blur correction means for correcting an image blur by moving in an optical path, a coil integrally held by the device, and a magnet integrally held by the image blur correction means. An optical apparatus equipped with an image blur correction device having a driving unit for driving the image blur correction unit, wherein the magnet is integrally held by the image blur correction unit. An optical apparatus equipped with an image blur correction device, comprising: a magnet holding unit fixed in a state of being biased by the image blur correction unit.