JP2008281660A - Stage device and shake correction device for camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stage device which is made lighter in weight than the conventional one and where a yoke member is easily attached to a fixed supporting substrate, and a shake correction device for a camera. <P>SOLUTION: The stage device has: magnets MX, MYA and MYB fixed on the surface of the fixed support substrate 21 opposed to a stage plate 40; yokes 50, 51 and 52 composed of magnetic substance, opposed to the respective magnets while holding the stage plate in between and constituting magnetic circuits between the respective magnets and the yokes; and driving coils CX, CYA and CYB fixed on the stage plate and generating drive force by receiving a current in the magnetic field of the magnetic circuit. In the stage device, the yoke has nearly the same width as the magnet. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a stage apparatus and a camera shake correction apparatus using the stage apparatus.

As a prior art of a camera shake correction device, for example, there is one disclosed in Patent Document 1.
This camera shake correction device is formed between a fixed support substrate that is fixed to the inner surface of the camera body and supports a permanent magnet, and a magnet that is substantially parallel to the fixed support substrate, and a magnet that is fixed to the fixed support substrate. And a yoke plate that constitutes a magnetic circuit, and the yoke plate is fixed to a plurality of support pillars that are integrally provided on the fixed support substrate with fixing screws.
Between the fixed support substrate and the yoke plate is slidable with respect to both, and a stage plate on which the image pickup device is supported is located on the front surface thereof. A plurality of driving coils are fixed to the surface of the stage plate facing the permanent magnet, and each driving coil is located in the magnetic field of the corresponding magnetic circuit.
In this camera shake correction device, when a current is passed through the drive coil when camera shake occurs, the drive coil through which the current has passed generates a drive force that slides the stage plate and the image sensor. Then, the image sensor is slid in a direction to cancel the camera shake, and the image blur is corrected.
JP-A-9-269520

The yoke plate of the conventional camera shake correction device as well as the above-described camera shake correction device is substantially the same shape as the fixed support substrate, and thus has a heavy weight. However, since the yoke plate does not exhibit any special function except for the portion facing the permanent magnet, if the yoke plate has substantially the same shape as the fixed support substrate, it causes a meaningless weight increase.
Further, since the yoke plate is fixed to the fixed support substrate by screwing the plurality of columns and the yoke plate, the fixing operation of the yoke plate to the fixed support substrate is troublesome.

  An object of the present invention is to provide a stage device and a camera shake correction device for a camera that can be reduced in weight as compared with the prior art and in which a yoke member can be easily attached to a fixed support substrate.

  The stage apparatus of the present invention includes a fixed support substrate, a stage plate slidable with respect to the fixed support substrate, a magnet fixed to a surface of the fixed support substrate facing the stage plate, and sandwiching the stage plate. A driving unit that generates a driving force by receiving a current in a magnetic field of the magnetic circuit fixed to the stage plate, and a yoke made of a magnetic material that forms a magnetic circuit between the magnet and the magnet. A stage device having a coil, wherein the yoke is substantially the same width as the magnet.

  An engagement hole or an engagement recess is formed in a portion of the fixed support substrate facing the yoke, and the yoke is opposed to the magnet across the stage plate and receives an attractive force from the magnet; A connection portion that extends from the end of the facing portion toward the fixed support substrate and is positioned on the outer peripheral side of the stage plate and whose end surface abuts on the fixed support substrate; It is preferable to provide an engaging protrusion to be engaged.

  A supporting portion that slidably supports the stage plate is formed at a portion of the fixed support substrate facing the stage plate, and the stage plate is biased toward the fixed support substrate between the fixed support substrate and the stage plate. Preferably means are provided.

  As the biasing means, for example, a tension spring can be used.

  The yoke includes an X yoke extending in a specific X direction parallel to the fixed support substrate, and a Y yoke extending in a Y direction parallel to the fixed support substrate and perpendicular to the X direction, and the magnet An X magnet facing the X yoke and a Y magnet facing the Y yoke, and the driving coil is positioned between the X yoke and the X magnet and extends in the X direction. It is preferable to include an X direction driving coil that generates a driving force and a Y direction driving coil that is located between the Y yoke and the Y magnet and generates a driving force in the Y direction.

  Based on the vibration information detected by the imaging element fixed to the stage plate, the vibration detection sensor that detects the vibration of the camera, and the vibration detection sensor, the X direction driving coil and the Y direction driving coil are shaken. A camera shake correction apparatus for a camera is provided.

  The camera shake correction device includes: a correction lens fixed to the stage plate; a vibration detection sensor that detects camera vibration; and the X-direction drive coil and the above-described coil based on vibration information detected by the vibration detection sensor. It can also be obtained by providing the Y-direction driving coil with control means for causing a current to flow so as to correct camera shake.

According to the first aspect of the present invention, the yoke constituting the magnetic circuit between the magnet fixed to the fixed support substrate is substantially the same width as the magnet and smaller than the fixed support substrate. It is lighter than a conventional yoke plate having the same shape. Therefore, it is possible to reduce the weight of the stage device as compared with the conventional art.
In addition, since the yoke faces the magnet, a magnetic circuit can be formed between the magnet and the yoke as in the conventional case.

According to the invention of claim 2 of the present invention, the yoke is fixedly supported by merely bringing the connecting portion into contact with the fixed support substrate and engaging the engagement protrusion with the engagement hole or the engagement recess of the fixed support substrate. Since it can be attached to the substrate, it is easier to attach the yoke to the fixed support substrate than in the prior art.
In addition, since the attracting force is applied to the yoke from the opposing magnet, the engagement protrusion of the yoke does not unexpectedly come out of the engagement hole or the engagement recess of the fixed support substrate.

According to the third or fourth aspect of the present invention, the stage plate is pulled toward the fixed support substrate by the urging force of the urging means (tensile spring), so that the surface of the stage plate facing the fixed support substrate is Since it is supported by the support portion formed on the fixed support substrate, it is possible to reduce the number of support portions compared to the case where the support portion for supporting the stage plate is also provided on the surface of the yoke facing the stage plate. .
Furthermore, the urging means (tensile spring) and the support portion are both located between the stage plate and the fixed support substrate, and are not located between the yokes of the stage plate. Therefore, the interval between the stage plate and the yoke can be reduced, and the thickness of the stage device can be reduced.

  According to invention of Claim 5 of this invention, it becomes possible to slide a stage board on the plane in which a stage board is located.

  According to the sixth or seventh aspect of the present invention, a camera shake correction device using a stage device can be obtained.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, as indicated by arrows in FIG. 1, FIG. 2, FIG. 3, etc., the horizontal direction of the camera shake correction device 20 of the camera 10 is defined as the X direction, the vertical direction is defined as the Y direction, and the longitudinal direction is defined as the Z direction. .
The camera 10 and the hand shake correction device 20 have the following structure.
As shown in FIG. 1, an optical system including a plurality of lenses L1, L2, and L3 is disposed in the lens barrel 11 of the camera 10 (reference O is an optical axis). A camera shake correction device 20 located immediately after the lens L3 is disposed.

The camera shake correction device 20 has a structure shown in FIGS.
As shown in FIGS. 2 to 6, the camera shake correction device 20 includes a fixed support substrate 21 that is made of a magnetic material such as soft iron and has a substantially rectangular shape in front view. A rectangular window hole 22 is formed in the center of the fixed support substrate 21, and an infrared cut filter 23 is fitted and fixed in the window hole 22. The fixed support substrate 21 is fixed to a fixed surface (not shown) formed on the inner surface of the camera body 12 by three fixing screws 24 shown in FIG.
At three positions on the rear surface of the fixed support substrate 21, columnar support protrusions (support parts) 26 are integrally protruded rearward. A hemispherical recess is formed on the rear end surface of each support protrusion 26, and a front half of a metal ball (support) 27 is rotatably fitted in each recess.
An X magnet MX composed of a pair of left and right magnets is fixed to the rear surface of the fixed support substrate 21 in such a manner as to be located on both left and right sides of the window hole 22. In both the left and right X magnets MX, the left side in FIGS. 2 and 3 is the south pole, and the right side is the north pole. These left and right X magnets MX are arranged in the X direction, and the positions in the Y direction are the same. In addition, a Y magnet MYA and a Y magnet MYB are arranged side by side on the rear surface of the fixed support substrate 21 so as to be positioned below the window hole 22. In both the Y magnet MYA and the Y magnet MYB, the upper side in FIGS. 2 and 3 is the N pole, and the lower side is the S pole.
The fixed support substrate 21 has a pair of upper and lower engagement holes 28 and engagement holes 29 in a manner of sandwiching the left and right X magnets MX, and further, a Y magnet MYA and a Y magnet MYB. A pair of left and right engagement holes 30 having a rectangular shape in front view are formed in such a manner as to sandwich the gap.
Further, a pair of left and right locking holes 32, a locking hole 33, and a locking hole 34 are formed at three locations on the fixed support substrate 21 in a manner located in the vicinity of the three support protrusions 26.

A stage plate 40 parallel to the fixed support substrate 21 is located immediately after the fixed support substrate 21.
A projecting piece 41, a projecting piece 42, and a projecting piece 43 project from the left and right ends and the lower end of the stage plate 40, respectively. A rectangular imaging device 44 is fixed to the front surface of the central portion of the stage plate 40 (the portion surrounded by the projecting piece 41, the projecting piece 42, and the projecting piece 43) (the front surface of the imaging device 44 is the imaging surface). is there). Furthermore, the upper side and the lower side of the image sensor 44 are X direction side edges 44X parallel to each other, and the left side and the right side of the image sensor 44 are Y direction side edges 44Y parallel to each other. The upper and lower X-direction sides 44X are parallel to the X direction when the stage plate 40 is located at the initial position shown in FIG. 3 (the position where the center of the imaging surface of the imaging device 44 is located on the optical axis O). The side 44Y in the Y direction is parallel to the Y direction when the stage plate 40 is located at the initial position.

X-direction drive coils CX having the same specifications are arranged in the X direction and fixed to the front surfaces of the projecting pieces 41 and 42. The left and right X-direction drive coils CX are both parallel to the XY plane in which the coil wire is wound in a spiral shape more than 100 times (which is wound in the direction parallel to the stage plate 40 and in the thickness direction of the stage plate 40). The left and right X-direction drive coils CX are arranged in a direction parallel to the X-direction side 44X (aligned in the X direction in FIG. 3). In other words, the positions of the left and right X-direction drive coils CX in the direction parallel to the Y-direction side 44Y (the positions in the Y-direction in FIG. 3) match.
A Y-direction drive coil CYA and a Y-direction drive coil CYB having the same specifications are fixed to the front surface of the projecting piece 43 along the lower X-direction side 44X (in FIG. 3, aligned in the X direction). ) In other words, the Y-direction driving coil CYA and the Y-direction driving coil CYB have the same position in the direction parallel to the Y-direction side 44Y (Y-direction position in FIG. 3). Both the Y-direction driving coil CYA and the Y-direction driving coil CYB have coil wires wound in a spiral shape more than 100 times (in the direction parallel to the stage plate 40 and in the thickness direction of the stage plate 40). ) A coil parallel to the XY plane.

  An X hall element HX that detects the X direction position of the right X direction driving coil CX using the magnetic force of the right X magnet MX is located immediately below the X direction driving coil CX on the front surface of the protrusion 42. It is fixed. Further, on the front surface of the projecting piece 43, a Y hall element HYA that detects the Y direction position of the Y direction driving coil CYA using the magnetic force of the Y magnet MYA, and a Y magnetic element YY that utilizes the magnetic force of the Y magnet MYB. A Y hall element HYB for detecting the Y direction position of the direction driving coil CYB is fixed.

A pair of locking holes 46, a locking hole 47, and a locking hole 48 are formed at positions facing the locking holes 32, the locking holes 33, and the locking holes 34 of the stage plate 40.
Then, both end portions of the tension spring (biasing means) S1 are engaged with the engagement hole 32 and the engagement hole 46, respectively. Similarly, both end portions of the tension spring (biasing means) S2 are latched to the latching hole 33 and the latching hole 47, respectively, and the tension spring (biasing means) is latched to the latching hole 34 and the latching hole 48. ) Both ends of S3 are locked. As described above, the stage plate 40 and the fixed support substrate 21 are urged toward each other by the tension spring S1, the tension spring S2, and the tension spring S3. The stage plate 40 and the fixed support substrate 21 are maintained in a parallel state. Further, since each ball 27 can rotate, the stage plate 40 can slide on the plane on which the stage plate 40 is positioned with respect to the fixed support substrate 21 (in addition to linear movement in the X and Y directions, it can rotate on the plane). ).
Further, since the biasing force of the tension spring S1, the tension spring S2, and the tension spring S3 is always generated between the fixed support substrate 21 and the stage plate 40, the movement range of the stage plate 40 is such that the left and right X-direction driving coils CX are opposed to each other. The Y magnet MYA and the Y magnet MYB that are opposed to the X magnet MX and the Y magnet MYA and the Y magnet MYB facing the Z direction and the Y direction driving coil CYA Yes.

The camera shake correction device 20 includes an X yoke 50, an X yoke 51, and a Y yoke 52 made of a magnetic material such as soft iron.
The X yoke 50 and the X yoke 51 have the same specifications and both have a substantially U-shaped cross section. The X yoke 50 and the X yoke 51 are substantially parallel to the fixed support substrate 21 and have a length in the Y direction that is longer than the projecting pieces 41 and 42, and project from the upper and lower ends of the facing portion 53 toward the front. And a pair of upper and lower connecting portions 54 and an engaging projection 55 having a narrower left-right width than the connecting portion 54 protruding forward from the front end of the upper and lower connecting portions 54. Since the engagement protrusions 55 have the same cross-sectional shape as the engagement holes 28 and the engagement holes 29 of the fixed support substrate 21, the upper and lower engagement protrusions 55 of the left and right X yokes 50 correspond to the corresponding engagement holes 28 and engagement holes 29. The front end surfaces of the upper and lower connecting portions 54 of the left and right X yokes 50 are the rear surfaces of the fixed support substrate 21 when the respective engagement protrusions 55 are fitted in the corresponding engagement holes 28 and 29. (Refer to FIG. 4).
The width in the X direction of the facing portion 53 of the left and right X yokes 50 is substantially the same (slightly longer) as the corresponding X magnet MX, and the facing portion 53 faces the corresponding X magnet MX in the Z direction. Therefore, a magnetic circuit (X magnetic circuit) is formed between the left and right X magnets MX and the corresponding X yokes 50 corresponding to the fixed support substrate 21, and the left and right X direction driving coils CX are always corresponding X signals. Located in the magnetic circuit.
Further, since the magnetic force (attraction force) is applied to the facing portion 53 of the X yoke 50 and the X yoke 51 from the corresponding X magnet MX, the X projections 55 are engaged with the engagement protrusions 55. It is always biased in the direction of engaging with the hole 28 and the engagement hole 29. Therefore, the engagement protrusions 55 of the X yoke 50 and the X yoke 51 do not unexpectedly come out of the engagement hole 28 and the engagement hole 29.
The Y yoke 52 has a U-shaped cross section that is longer than the X yoke 50 and the X yoke 51, and has a facing portion 56 that is substantially parallel to the fixed support substrate 21 and whose length in the X direction is longer than the protruding piece 43, and the facing portion. A pair of left and right connection portions 57 projecting forward from the left and right end portions of 56, and an engaging projection 58 having a narrower vertical width than the connection portion 57 projecting forward from the front ends of the left and right connection portions 57. Yes. Since the engagement protrusions 58 have the same cross-sectional shape as the engagement holes 30 of the fixed support substrate 21, the left and right engagement protrusions 58 can be fitted into the corresponding engagement holes 30, and the left and right engagement protrusions 58 are associated with the corresponding engagement holes 58. When the fitting hole 30 is fitted, the front end surfaces of the left and right connection portions 57 come into contact with the rear surface of the fixed support substrate 21 (see FIG. 4).
The width in the Y direction of the facing portion 56 of the Y yoke 52 is substantially the same (slightly longer) as the Y magnet MYA and the Y magnet MYB, and the facing portion 56 is in the Z direction with the Y magnet MYA and the Y magnet MYB. Opposite to. Therefore, a magnetic circuit (Y magnetic circuit) is formed between the Y magnet MYA, the fixed support substrate 21 and the Y yoke 52, and between the Y magnet MYB, the fixed support substrate 21 and the X yoke 50, The Y-direction drive coil CYA and the Y-direction drive coil CYB are always located in the corresponding Y magnetic circuit.
Further, since the magnetic force (attraction force) is applied to the facing portion 56 of the Y yoke 52 from the corresponding Y magnet MYA and Y magnet MYB, the engagement protrusion 58 of the Y yoke 52 is engaged with the engagement hole 30. Always energized in the direction of Therefore, the engagement protrusion 58 of the Y yoke 52 does not come out of the engagement hole 30 unexpectedly.

  The X-direction drive coil CX, the Y-direction drive coil CYA, the Y-direction drive coil CYB, the X hall element HX, the Y hall element HYA, and the Y hall element HYB are all CPUs built in the camera body 12, etc. The control means C is electrically connected to a battery B built in the camera body 12. Further, the control means C is electrically connected to a gyro sensor GS (vibration detection sensor, see FIG. 1) built in the camera body 12.

The camera shake correction apparatus 20 having the above-described configuration operates as follows.
When the main switch MS (see FIG. 1) provided on the camera body 12 is turned on, a current is supplied from the control means C to at least one of the X direction driving coil CX, the Y direction driving coil CYA, and the Y direction driving coil CYB. At least one of the X-direction driving coil CX, the Y-direction driving coil CYA, and the Y-direction driving coil CYB generates a driving force in the direction indicated by the arrow (FX1 or FX2, FY1 or FY2) shown in FIG. The stage plate 40 moves to the initial position in FIG.
Furthermore, when a camera shake correction switch SW (see FIG. 1) provided in the camera body 12 is pushed when a camera shake (vibration) in the X direction or the Y direction is generated in the camera 10, the gyro sensor GS built in the camera 10 is activated. The movement distance (shake amount) of the camera body 12 in the X direction and the Y direction is detected, and the control means C supplies current to at least one of the X direction driving coil CX, the Y direction driving coil CYA, and the Y direction driving coil CYB. Shed. Then, at least one of the X-direction driving coil CX, the Y-direction driving coil CYA, and the Y-direction driving coil CYB generates a driving force in the arrow direction (FX1 or FX2, FY1 or FY2) shown in FIG. The stage plate 40 and the image sensor 44 move linearly in the X direction or the Y direction by the same distance as the amount of camera shake in the direction opposite to the camera shake direction with respect to the fixed support substrate 21 (in the X and Y directions of the stage plate 40). The slide amount is detected by the X hall element HX, the Y hall element HYA, and the Y hall element HYB), and the camera shake (image blur) of the image sensor 44 is corrected.
Further, since the stage plate 40 can rotate relative to the fixed support substrate 21, when the camera shake correction switch SW is pressed when the camera 10 is shaken, the gyro sensor GS of the camera 10 rotates the amount of rotation of the camera body 12. (Hand shake amount) is detected, and the control means C supplies currents in opposite directions to the Y-direction driving coil CYA and the Y-direction driving coil CYB. Then, due to the reverse driving force generated by the Y-direction driving coil CYA and the Y-direction driving coil CYB, the image pickup device 44 is the same distance as the rotational shake amount in the direction opposite to the rotational shake direction with respect to the camera body 12. Since it rotates, the rotational shake of the camera 10 is corrected.

As described above, in the present embodiment, the X yoke 50 and the X yoke 51 are approximately the same width as the X magnet MX, and the Y yoke 52 is approximately the same width as the Y magnet MYA and the Y magnet MYB. The dimensions of the X yoke 50, the X yoke 51, and the Y yoke 52 are smaller than those of the conventional yoke plate. Therefore, the weight is lighter than that of a conventional yoke plate, and the weight of the whole hand movement correction device 20 is lighter than that of the conventional one.
Moreover, the X yoke 50, the X yoke 51, and the Y yoke 52 are opposed to the left and right X magnets MX, the Y magnet MYA, and the Y magnet MYB, respectively, in the Z direction. Similarly, a magnetic circuit can be formed between the left and right X magnets MX, the Y magnet MYA, and the Y magnet MYB.
Further, the X yoke 50, the X yoke 51, and the Y yoke 52 are fitted with the engaging protrusions 55 and the engaging protrusions 58 into the engaging holes 28, the engaging holes 29, and the engaging holes 30 of the fixed support substrate 21, respectively. Therefore, the fixed support substrate of the X yoke 50, the X yoke 51, and the Y yoke 52 can be compared with the fixed support substrate of the conventional yoke plate that uses a column or a fixing screw. The fixing structure to 21 is simple. Therefore, assembling is easier as compared with the conventional camera shake correction device.

Further, the stage plate 40 is pulled toward the fixed support substrate 21 by the urging force of the tension spring S1, the tension spring S2, and the tension spring S3, and the front surface of the stage plate 40 is supported by the fixed support substrate 21 (support protrusion 26). It is in contact with the ball 27. Therefore, the number of support members can be reduced as compared with the case where the support members are brought into contact with both the front and back surfaces of the stage plate.
In addition, the support protrusion 26, the ball 27, the tension spring S1, the tension spring S2, and the tension spring S3 are all located between the fixed support substrate 21 and the stage plate 40, and the stage plate 40 and the X yoke 50, X It is not located between the facing portions 53 of the yoke 51 for use and between the facing portions 56 of the stage plate 40 and the Y yoke 52. Therefore, it is possible to reduce the distance between the stage plate 40 and the X yoke 50, the facing portion 53 of the X yoke 51, and the space between the stage plate 40 and the facing portion 56 of the Y yoke 52. The thickness of the apparatus 20 can be made thinner than before.

As mentioned above, although this invention was demonstrated using the said embodiment, this invention is not limited to this embodiment, It can implement, giving various changes.
For example, instead of the engagement hole 28, the engagement hole 29, and the engagement hole 30, a bottomed engagement having the same cross-sectional shape as the engagement hole 28, the engagement hole 29, and the engagement hole 30 is provided on the rear surface of the fixed support substrate 21. A mating recess is formed, and the engaging projection 55 of the X yoke 50 and X yoke 51 and the engaging projection 58 of the Y yoke 52 are fitted into each engaging recess, and the X yoke 50, the X yoke 51, and The Y yoke 52 may be fixed to the rear surface of the fixed support substrate 21.
In addition, as an urging means for pulling the stage plate 40 and the fixed support substrate 21 toward each other, a member other than the tension spring S1, the tension spring S2, and the tension spring S3 may be used.
Further, as shown in FIG. 7, for example, the camera shake correction device 20 is positioned between the lens L1 and the lens L3 (the positional relationship with the lens system of the camera shake correction device 20 is not limited to this), and the stage plate 40 The imaging lens 44 may be fixed in the camera body 12 by fitting and fixing the correction lens CL in the formed holding hole. In this structure, the image blur is corrected by the correction lens CL sliding along with the stage plate 40. In addition, if the correction lens CL is used in this way, the camera shake correction device 20 can be applied to a silver salt camera by replacing the image sensor 44 with a film.

  Further, in the above embodiment, the present invention is applied to the hand shake correction device 20 in which the stage plate 40 can rotate. However, the present invention is applied to a conventionally known hand shake correction device in which the stage plate 40 moves linearly only in the X direction and the Y direction. Of course, it is possible to apply to a hand shake correction device (a device in which a specific member can move and rotate in the X direction and the Y direction) which has a different use from the hand shake correction device.

It is a vertical side view of the camera with a camera shake correction function of one embodiment of the present invention. It is the disassembled perspective view seen from the back of a hand-shake correction apparatus. It is a rear view of a hand-shake correction apparatus. FIG. 4 is a bottom view of the camera shake correction device viewed in the direction of the arrow IV in FIG. 3. It is sectional drawing of the camera-shake correction apparatus which follows the VV arrow line of FIG. It is sectional drawing of the camera-shake correction apparatus which follows the VI-VI arrow line of FIG. It is a vertical side view of the camera similar to FIG. 1 in a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Camera 11 Lens barrel 12 Camera body 20 Camera shake correction apparatus 21 Fixed support board (fixed support board)
22 Window hole 23 Infrared cut filter 24 Fixing screw 26 Support protrusion (support part)
27 Ball (support part)
28 29 30 Engagement hole 32 33 34 Locking hole 40 Stage plate 41 42 43 Projection piece 44 Imaging element 44X X side edge 44Y Y direction side 46 47 48 Locking hole 50 51 X yoke 52 Y yoke 53 Opposing Part 54 connecting part 55 engaging protrusion 56 facing part 57 connecting part 58 engaging protrusion B battery C control means CL correction lens CX X direction driving coil (driving coil)
CYA CYB Y direction drive coil (drive coil)
GS gyro sensor (vibration detection sensor)
Hall element for HX X HYA HYB Hall element for Y L1 L2 L3 Lens (optical system)
Magnet for MX X (Magnet)
MYA MYB Y Magnet (Magnet)
MS main switch S1 S2 S3 Tension spring (biasing means)
SW Shake correction switch

Claims (7)

A fixed support substrate and a stage plate slidable relative to the fixed support substrate;
A magnet fixed to a surface of the fixed support substrate facing the stage plate;
A yoke made of a magnetic material that faces the magnet across the stage plate and forms a magnetic circuit with the magnet;
A stage device having a driving coil that is fixed to the stage plate and generates a driving force by receiving a current in a magnetic field of the magnetic circuit;
A stage apparatus characterized in that the yoke has substantially the same width as the magnet. The stage apparatus according to claim 1, wherein
Forming an engagement hole or an engagement recess in a portion of the fixed support substrate facing the yoke;
The yoke is opposed to the magnet across the stage plate and receives an attractive force from the magnet, and extends from the end of the opposed portion to the fixed support substrate side and is located on the outer peripheral side of the stage plate. A stage device comprising: a connection portion whose end face is in contact with the fixed support substrate; and an engagement protrusion that protrudes from the connection portion and engages with the engagement hole or the engagement recess. The stage apparatus according to claim 1 or 2,
Forming a support portion for slidably supporting the stage plate at a portion of the fixed support substrate facing the stage plate,
A stage apparatus provided with a biasing means for pulling the stage plate toward the fixed support substrate between the fixed support substrate and the stage plate. The stage apparatus according to claim 3, wherein
A stage device in which the biasing means is a tension spring. The stage apparatus according to any one of claims 1 to 4,
The yoke includes an X yoke extending in a specific X direction parallel to the fixed support substrate, and a Y yoke extending in the Y direction parallel to the fixed support substrate and perpendicular to the X direction;
The magnet includes an X magnet facing the X yoke, and a Y magnet facing the Y yoke;
The driving coil is positioned between the X yoke and the X magnet and generates an X direction driving force; and the driving coil is positioned between the Y yoke and the Y magnet in the Y direction. A stage apparatus comprising: a Y-direction driving coil that generates a driving force. In the camera shake correction device using the stage device according to claim 5,
An image sensor fixed to the stage plate;
A vibration detection sensor for detecting camera vibration;
Control means for causing a current to flow through the X direction driving coil and the Y direction driving coil based on vibration information detected by the vibration detection sensor so as to correct camera shake;
A camera shake correction device for a camera, comprising: In the camera shake correction device using the stage device according to claim 5,
A correction lens fixed to the stage plate;
A vibration detection sensor for detecting camera vibration;
Control means for causing a current to flow through the X direction driving coil and the Y direction driving coil based on vibration information detected by the vibration detection sensor so as to correct camera shake;
A camera shake correction device for a camera, comprising:

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