JP5295735B2 - Image stabilization device, imaging lens unit, and camera unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve simplification and miniaturization of structure, and improvement of the reliability, in terms of a function in an image blur correction device. <P>SOLUTION: The image blur correction device includes: a base 100; a movable holding member 110; a support mechanism 150 for supporting the movable holding member to be movable in a plane perpendicular to an optical axis L2 of a lens; a regulating means for regulating the movable holding member's separating from the base in an optical axis direction; driving means 120 and 130 for driving the movable holding member; position detection means 171 and 172; and restoring means 161 and 162 for restoring the movable holding member to a dormant position. The image blur correction device includes an engaging mechanism (female engaging part 105 and male engaging part 115) for engaging the movable holding member 110, with the base which is movable in a plane perpendicular to the optical axis as the regulating means. Thus, the simplification and miniaturization of the structure are attained, and the movable holding member is supported to be movable, while it is so regulated as not to separate from the base. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an image blur correction device mounted on a lens barrel or a shutter unit of a digital camera, an imaging lens unit and a camera unit including the image blur correction device, and more particularly to a portable information terminal such as a mobile phone. The present invention relates to a small and thin image blur correction device, an imaging lens unit, and a camera unit that are applied to a camera unit to be mounted.

As a conventional image blur correction device, a substantially rectangular base having an opening in the center, a first guide shaft provided on the front surface of the base, and a first guide shaft supported reciprocally along the first guide shaft. A first movable member, a second guide shaft oriented in the direction of 90 degrees with respect to the first guide shaft and provided on the front surface of the first movable member; a lens which is supported so as to reciprocate along the second guide shaft; A second movable member that holds the first movable member, a first drive device that reciprocates the first movable member and the second movable member together in the direction of the first guide shaft, and a second movable member that reciprocates in the direction of the second guide shaft. 2. Description of the Related Art There is known a device that includes a second drive device to be moved, and employs a voice coil motor including a coil and a magnet as the first drive device and the second drive device (see, for example, Patent Document 1).
However, this apparatus has a two-stage configuration in which the first movable member and the second movable member are arranged in the optical axis direction, which leads to an increase in the size of the apparatus in the optical axis direction.
Further, although the second driving device drives only the second movable member, the first driving device needs to drive not only the first movable member but also the second movable member and the second guide shaft together. Compared with the case where only the movable member is driven, a larger driving force must be generated, leading to an increase in the size of the first driving device. Furthermore, since the driving load of the first driving device and the driving load of the second driving device are different, driving control for positioning the lens in a plane perpendicular to the optical axis is not easy.

As another image blur correction apparatus, a substantially rectangular base having an opening, four elastic support members (wires) that are implanted in the four front corners of the base and extend in the optical axis direction, and four A movable member that holds the lens by connecting the tip of the elastic support member, a first magnet and a first yoke provided on the movable member, a second magnet and a second yoke provided on the movable member, and a base Includes a substantially rectangular fixed frame that is fixed to another different member and is disposed in front of the movable member and holds the first coil and the second coil. The first magnet, the first yoke, and the first coil are the first ones. The driving means is constituted, the second magnet, the second yoke, and the second coil constitute second driving means, the first driving means drives the movable member in the first direction perpendicular to the optical axis, and the second driving means To move the movable member perpendicular to the optical axis and the first direction. Those to be driven in the direction is known (e.g., see Patent Document 2).
However, in this apparatus, the movable member is supported by the base using four elastic support members (wires) extending in the optical axis direction, and further, a fixed frame that holds the coil by another member in front of the movable member. This increases the size of the device in the optical axis direction, and the connecting portions of the four elastic support members are not rigidly linked but are rigidly connected, so that the movable member (lens) is connected to the optical axis. In addition to being moved in a vertical plane direction, there is a risk of tilting with respect to the optical axis.
Even if the base and the movable member are connected, the fixed frame for holding the coil is not integrally connected. Therefore, it cannot be modularized as an image blur correction device, and is inconvenient to handle. The first and second magnets of the movable member and the first and second coils of the fixed frame cannot be aligned with respect to one member (for example, the base), and the assembly work of the apparatus is troublesome. . Further, since the first driving means (the first magnet and the first yoke) and the second driving means (the second magnet and the second yoke) are disposed only on one side of the movable member with respect to the lens, The first driving means and the second driving means exert driving force only on one side of the movable member, not symmetrically with respect to the lens, and tend to promote inclination of the movable member, that is, inclination of the lens.

Further, as another image blur correction device, a base, a movable member holding a lens, three balls as a support mechanism for supporting the movable member movably with respect to the base, and the movable member from the base in the optical axis direction Coil spring that exerts an urging force as a restricting means for restricting separation (lifting), driving means (driving magnet, coil, yoke) for driving the movable member in a direction perpendicular to the optical axis, and position of the movable member What is provided with the position detection means (magnet, Hall element) for detecting this is known (for example, refer to patent documents 3).
In this apparatus, since three rolling balls are interposed between the movable member and the base, the apparatus can be thinned in the optical axis direction, but the movable member is always in contact with the three balls. A biasing force is exerted by the coil spring so as to restrict it to be supported, and the biasing force of the coil spring acts as a resistance force, that is, a driving load when driving the movable member. It is necessary to generate a driving force that can counteract the power.

Further, as another image blur correction device, a base, a movable member that holds a lens, a first drive unit (magnet, coil, yoke) and a second drive for driving the movable member in two directions perpendicular to the optical axis. There are known means (magnet, coil, yoke) and two assist springs for returning the movable member to the center position (centering) in the non-energized state (resting state) in which the coil is not energized. (For example, see Patent Document 4).
In this apparatus, since an assist spring is employed as a return means for returning the movable member to the center position, a space for arranging the assist spring is required, which leads to an increase in diameter and size of the apparatus.

JP 2007-286318 A JP 2008-64846 A Japanese Patent No. 3969927 Japanese Patent No. 3869926

  The present invention has been made in view of the above circumstances, and its object is to simplify the structure and reduce the size and thickness of the device in the optical axis direction of the lens and in the direction perpendicular to the optical axis direction. It can be mounted on a camera unit such as a mobile phone while improving functional reliability, etc., and can correct image blur due to camera shake with high accuracy. An object of the present invention is to provide an image shake correction apparatus capable of automatically returning (centering) to a predetermined rest position, and an imaging lens unit and a camera unit including the image shake correction apparatus.

An image shake correction apparatus according to the present invention includes a base having an opening, a movable holding member that holds a lens, a support mechanism that supports the movable holding member in a plane perpendicular to the optical axis of the lens, and a movable holding Restricting means including an engagement mechanism for engaging the movable holding member with the base to be movable in the plane so as to restrict the member from separating from the base in the optical axis direction, and to drive the movable holding member in the plane. The drive unit including a drive magnet fixed to the other of the base and the movable holding member, a position detection unit for detecting the position of the movable holding member, and a magnetic action of the drive magnet in the paused state causes the movable holding member to perform a predetermined pause. while Bei example and returning means comprising a fixed return magnet base and the movable holding member so as to return to the position, the engagement mechanism is at least 3 provided on one of the base and the movable holding member The female engaging portion is provided on the other of the base and the movable holding member, and the movable holding member is rotated around the optical axis relative to the base to engage the female engaging portion. And at least three male engaging portions that extend in the axial direction and bend in a direction parallel to the plane. The return magnet includes a male engaging portion and a female engaging portion. In the engaged state, the movable holding member is configured to exert a magnetic action for restricting the rotation of the movable holding member around the optical axis in cooperation with the drive magnet .
According to this configuration, the movable holding member, while being restricted to leaves in the optical axis direction with respect to the base of (float) by the regulating means, is movably supported in a more plane perpendicular to the optical axis to a support mechanism Thus, it is moved two-dimensionally within the plane with respect to the base by the driving means, and image blur due to camera shake or the like can be corrected with high accuracy. Further, the return means can return to a predetermined rest position in the rest state.
Here, the restricting means is formed by an engagement mechanism that engages the movable holding member with the base so as to be movable in a plane, that is, the movable holding member is based on the engagement relationship rather than by a biasing spring or the like. It is regulated to leave. Accordingly, since the spring biasing force or the like does not act as a driving load (resistance force) as in the prior art, the movable holding member can be driven with high accuracy and smoothly, and the movable holding member can be moved relative to the base. It is possible to reliably prevent separation from the base in the optical axis direction while supporting, to improve functional reliability, and to prevent the sphere from coming off.
In particular, since the engagement mechanism includes at least three female engagement portions and at least three male engagement portions having a substantially L shape, the male engagement portion having a substantially L shape can be removed from the optical axis direction. When approaching the female engagement portion and rotating around the optical axis by a predetermined angle, the male engagement portion engages with the female engagement portion, and the movable holding member is restricted from moving away from the base in the optical axis direction. In other words, since the engagement mechanism is composed of a simple male engagement portion and a female engagement portion, simplification of the structure, ease of assembly, etc. can be achieved while reducing the number of parts. .
Further, the return means includes a return magnet, and the return magnet not only has a function of returning the movable holding member to the rest position in the resting state, but also in a state where the male engaging portion is engaged with the female engaging portion. In order to restrict the movable holding member from being separated from the base by the magnetic attraction force with the drive magnet, and to regulate the rotation of the movable holding member around the optical axis in cooperation with the drive magnet, Without adopting restriction members, etc., the number of parts can be reduced, the structure can be simplified, and the conventional spring biasing force does not act as a driving force (resistance force). It is possible to obtain a desired correction operation by driving accurately and smoothly.

The said structure WHEREIN: The structure which contains the control member which controls that a male type engaging part remove | deviates from a female type engaging part can be employ | adopted for a control means.
According to this configuration, even if the male engagement portion is engaged with the female engagement portion and receives an impact, vibration, or the like from the outside, the male engagement portion becomes female due to the restriction action of the restriction member. The release from the mold engaging portion can be prevented.

In the above configuration, the driving means is fixed to one of the base and the movable holding member, a driving magnet fixed to the other of the base and the movable holding member at a position facing the coil, and fixed to the base or the movable holding member. It is possible to employ a configuration in which the yoke is also used, and the yoke also serves as a regulating member.
According to this configuration, since the yoke included in the driving means is also used as the regulating member, the structure can be simplified by reducing the number of parts, and the magnetic efficiency of the electromagnetic driving force generated by the driving magnet and the coil can be increased and movable. The engagement state between the holding member and the base can be maintained.

In the above configuration, the driving means includes a first coil fixed to one of the base and the movable holding member, a first driving magnet fixed to the other of the base and the movable holding member and facing the first coil, A first driving mechanism that exerts a driving force in the first direction, a second coil fixed to one of the base and the movable holding member, and a second driving fixed to the other of the base and the movable holding member and facing the second coil Including a magnet and a second driving mechanism that exerts a driving force in a second direction within the plane, and the return means is fixed to one of the base and the movable holding member to generate a magnetic force for returning to the rest position, A first return magnet that faces the first drive magnet; and a second return magnet that faces the second drive magnet. The position detection means is fixed to one of the base and the movable holding member. Opposing first Including a gas sensor, a second magnetic sensor facing the second drive magnet, it is possible to adopt a configuration.
According to this configuration, the movable holding member is moved in a plane perpendicular to the optical axis by the first drive mechanism (first drive magnet, first coil) and the second drive mechanism (second drive magnet, second coil). The movable holding member (lens) can be moved to a predetermined rest position by the magnetic attraction action between the first return magnet and the first drive magnet and the magnetic attraction action between the second return magnet and the second drive magnet. (For example, the position where the optical axis of the lens coincides with the center of the opening of the base) is automatically returned (for example, centered) and stably held. Therefore, drive control such as initialization is not required during driving, and rattling of the movable holding member can be prevented in the resting state. Thus, since the drive magnet of the drive means is also used as a magnet that magnetically interacts with the return magnet, the structure can be simplified, the apparatus can be downsized, and the like.

An imaging lens unit according to the present invention is characterized in that, in an imaging lens unit including a plurality of imaging lenses, any one of the image blur correction apparatuses having the above-described configuration is included.
According to this configuration, in the configuration in which the plurality of imaging lenses are arranged in the optical axis direction, the correction lens held by the movable holding member is appropriately driven by including the image blur correction device. Thus, image blur due to camera shake or the like can be corrected smoothly and with high accuracy.
That is, it is possible to provide an imaging lens unit to which the image blur correction function is added in addition to a plurality of imaging lenses.

Furthermore, the camera unit of the present invention is characterized in that, in a camera unit including an image sensor, any one of the image blur correction apparatuses having the above-described configuration is included.
According to this configuration, in the camera unit including the image sensor, the correction lens held by the movable holding member is appropriately driven by including the above-described image blur correction device, so that the image blur due to camera shake or the like is smoothly performed. In addition, the image can be corrected with high accuracy, and a good captured image can be obtained by the image sensor.

  According to the image shake correction apparatus having the above-described configuration, the structure is simplified, the apparatus is downsized and thinned in the optical axis direction of the lens and the direction perpendicular to the optical axis direction, and the functional reliability is improved. It can be mounted on a camera unit such as a mobile phone, and image blur due to camera shake or the like can be corrected with high accuracy, and the correction lens is automatically returned to a predetermined pause position in a pause state ( An image blur correction device capable of being centered) can be obtained, and an imaging lens unit and a camera unit including the image blur correction device can be obtained.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the accompanying drawings.
1 to 18 show an embodiment of an image shake correction apparatus according to the present invention, and FIG. 1 is a perspective view showing a portable information terminal equipped with a camera unit incorporating the image shake correction apparatus. 2 is a perspective view showing the camera unit, FIG. 3 is a sectional view showing the inside of the camera unit, FIG. 4 is a block diagram showing the control system, FIG. 5 is a sectional view of the camera unit, and FIG. 6 is a perspective view of the image blur correction device. 7 is an exploded perspective view of the image shake correcting device, FIG. 8 is a cross-sectional view of the image shake correcting device, and FIGS. 9 and 10 are perspective views showing a part of the image shake correcting device (such as a movable holding member). 11 and 12 are a perspective view and a rear view showing a part (base, etc.) of the image blur correction apparatus, FIG. 13 is a rear view showing the image blur correction apparatus, and FIG. 14 is a part of the image blur correction apparatus (in the driving means). FIG. 15 is an image shake correction apparatus. FIG. 16 is a perspective view showing a procedure in which the movable holding member is engaged with the base by the engagement mechanism and assembled. FIGS. 17A, 17B, 17C, and 18A, 18B are shown. ), (C) are plan views for explaining the operation of the image blur correction apparatus.

  As shown in FIG. 1, the camera unit U incorporating the image blur correction device is mounted on a flat and small portable information terminal PH. The portable information terminal PH includes a housing PH1 having a substantially rectangular shape and a flat outline, a display portion PH2 such as a liquid crystal panel arranged on the surface of the housing PH1, a control button PH3, and a display portion PH2. A photographing window PH4 and the like formed on the opposite surface are provided. As shown in FIG. 1, the camera unit U is accommodated in the housing PH1 so as to extend in a direction perpendicular to the optical axis L1 of the subject light entering from the photographing window PH4.

  2 and 3, the camera unit U includes a unit case 10, a prism 20, a lens G1, a first movable lens group 30 that holds the lens G2, and a second movable lens that holds the lenses G3, G4, and G5. An image shake correction device M as a group, a lens G6, a filter 40, a CCD 50 as an image sensor, a first drive unit 60 for driving the first movable lens group 30 in the direction of the optical axis L2, and a second movable lens group (image shake correction). A second drive unit 70 that drives the device M) in the direction of the optical axis L2, an angular velocity sensor 80, a control unit 90, and the like are provided.

As shown in FIGS. 2 and 3, the unit case 10 is flat and has a substantially rectangular shape so that the thickness dimension in the optical axis L1 direction is thin and the length dimension in the optical axis L2 direction is short. The formed protrusion 11 that fixes the prism 20, the holding part 12 that holds the lens G1, the holding part 13 that holds the lens G6, the holding part 14 that holds the filter 40, the holding part 15 that holds the CCD 50, and the like. I have.
As shown in FIGS. 2 and 3, the prism 20 is accommodated in the protruding portion 11 of the unit case 10, and guides the optical axis L1 of the subject light entering from the photographing window PH4 in the direction of the optical axis L2 by bending it at a right angle. It is like that.
As shown in FIGS. 2 and 3, the lens G <b> 1 is disposed behind the prism 20 in the directions of the optical axes L <b> 1 and L <b> 2 and is fixed to the holding portion 12 of the unit case 10.

As shown in FIGS. 2 and 3, the first movable lens group 30 is disposed behind the lens G1 in the direction of the optical axis L2 and is movably supported in the direction of the optical axis L2, and is supported by the first drive unit 60. It is driven to reciprocate in the direction of the optical axis L2.
That is, the first movable lens group 30 is slidably engaged with the lens holding member 31, the guided portion 32 guided by the guide shaft 61, and the rotation preventing shaft 62, and the rotation about the optical axis L2 is restricted. A regulated portion 33, a U-shaped engagement portion 34 with which a nut 65 screwed to the lead screw 63 abuts, and the like are provided.

As shown in FIG. 3, the lens G6 is disposed behind the second movable lens group (image blur correction device M) in the optical axis L2 direction, and is fixed to the holding portion 13 of the unit case 10.
The filter 40 is an infrared cut filter, a low-pass filter, or the like, and is disposed behind the lens G6 in the optical axis L2 direction and fixed to the holding portion 14 of the unit case 10, as shown in FIG.
As shown in FIG. 3, the CCD 50 is disposed behind the filter 40 in the direction of the optical axis L <b> 2 and is fixed to the holding portion 15 of the unit case 10.

  As shown in FIGS. 2 and 3, the first drive unit 60 includes a guide shaft 61 and a detent shaft 62 fixed to the unit case 10 by extending in the direction of the optical axis L2, and a lead screw extending in the direction of the optical axis L2. 63, a motor 64 that rotationally drives the lead screw 63, a nut 65 that is screwed into the lead screw 63 and abuts on the U-shaped engaging portion 34 of the first movable lens group 30, and the U-shaped engaging portion 34 is a nut 65. A tension-type coil spring 66 or the like that is hooked between the lens holding member 31 and a base 100 to be described later is provided so as to exert a biasing force that always biases toward the bottom.

  As shown in FIG. 2, the second drive unit 70 includes a guide shaft 71 and a detent shaft (here also used as the detent shaft 62) that extend in the direction of the optical axis L <b> 2 and are fixed to the unit case 10. A lead screw 73 extending in the L2 direction, a motor 74 that rotationally drives the lead screw 73, and a nut 75 that is screwed into the lead screw 73 and abuts against the U-shaped engaging portion 103 of the base 100 included in the second movable lens group. And a coil spring (here, also used as the coil spring 66) that exerts an urging force that constantly urges the U-shaped engaging portion 103 toward the nut 75.

As shown in FIG. 3, the angular velocity sensor 80 is fixed to the unit case 10 via a substrate, and detects vibrations and shakes received by the camera unit U.
As shown in FIG. 3, the control unit 90 is a microcomputer fixed to the outer wall of the unit case 10. As shown in FIG. 4, the control unit 90 performs control processing and processes various signals to generate command signals. Part 91, a motor drive circuit 92 for driving the motor 64 of the first drive unit 60, a motor drive circuit 93 for driving the motor 74 of the second drive unit 70, a CCD drive circuit 94 for driving the CCD 50, and the image blur correction device M. The drive circuit 95 that drives the first coil 121 and the second coil 131 included, and the first magnetic sensor 171 and the second magnetic sensor 172 that detect the position of the movable holding member 110 included in the image shake correction apparatus M are connected. A position detection circuit 96, an angular velocity detection circuit 97 connected to the angular velocity sensor 80, and the like are provided.

As shown in FIGS. 2, 3, and 5, the image blur correction device M as the second movable lens group is disposed between the first movable lens group 30 and the lens G6 in the direction of the optical axis L2, and the optical axis L2. It is supported movably in the direction.
As shown in FIGS. 2 and 6 to 8, the image blur correction device M includes a base 100, a movable holding member 110, and a first (including a first coil 121 and a first drive magnet 122) as drive means. The driving mechanism 120, the second driving mechanism 130 (including the second coil 131 and the second driving magnet 132) as driving means, the yokes 141 and 142 included in the driving means, and the movable holding member 110 in a plane perpendicular to the optical axis L2. Three spheres 150 as support mechanisms that are movably supported in the interior, and engagement mechanisms (three males of the movable holding member 110) as restricting means for restricting the movable holding member 110 from moving away from the base 100 in the optical axis L2 direction. Mold engaging portion 115, three female engaging portions 105 of base 100), first return magnet 161 and second return magnet 162 as return means, and first magnetic sensor as position detection means. 71 and the second magnetic sensor 172, and a flexible wiring board 180 or the like for electrical connection.

  As shown in FIGS. 6 to 8, 11, and 12, the base 100 is substantially flat in the direction of the optical axis L2, and is in the direction of a straight line S1 (see FIG. 12) perpendicular to the optical axis L2 and parallel to the optical axis L1. Are formed in a substantially rectangular flat plate shape that is long in the direction of the straight line S2 (see FIG. 12) perpendicular to the optical axis L2 and the straight line S1, and has an opening portion 100a centered on the optical axis L2. A fitting recess 100b for fitting and fixing one coil 121; a fitting recess 100c for fitting and fixing the first magnetic sensor 171; a fitting recess 100d for fitting and fixing the first return magnet 161; Fitting recess 100e for fitting and fixing the two coils 131, fitting recess 100f for fitting and fixing the second magnetic sensor 172, fitting recess 100g for fitting and fixing the second return magnet 162, guide The object to be guided by being slidably engaged with the shaft 71. U-shaped engagement with which a nut 75 screwed into a lead screw 73 and a regulated portion 102 that is slidably engaged with the id portion 101 and the rotation-preventing shaft 62 and is restricted from rotating around the optical axis L2 Part 103, three recesses 104 for receiving a sphere 150 as a support mechanism, three female engagement parts 105 as an engagement mechanism (regulating means), a screw hole 106 for fixing the yoke 141, and two positioning pins 107 Etc.

As shown in FIG. 12, the opening 100a is formed narrow in the direction of the straight line S1 so as to define the center C1 at the intersection of the straight line S1 and the straight line S2 and to define the parallel inner wall surface in the direction of the straight line S1. In addition, the inner diameter of the movable holding member 110 is formed so that the holding portion 110a can pass in a non-contact manner within a range in which the movable holding member 110 is driven.
The fitting recesses 100b, 100c, 100d and the fitting recesses 100e, 100f, 100g are formed so as to be line-symmetric with respect to the straight line S1, as shown in FIG. That is, the first coil 121, the first return magnet 161, the first magnetic sensor 171 and the second coil 131, the second return magnet 162, and the second magnetic sensor 172 are lined with respect to the straight line S 1 on the base 100. Arranged symmetrically.

The three recesses 104 are formed so as to be able to roll freely in a state in which the sphere 150 is partially protruded in the direction of the optical axis L2. The arrangement of the three concave portions 104 is such that one concave portion 104 is arranged on the straight line S1 and in the vicinity of the opening 100a, and the other two concave portions 104 are arranged at positions symmetrical with respect to the straight line S1. Yes. That is, the three recesses 104 are arranged so as to be positioned at the three vertices of the isosceles triangle.
The female engagement portion 105 forms a part of an engagement mechanism for engaging the movable holding member 110 with the base 100 so as to be movable within a plane perpendicular to the optical axis L2, and is a male type of the movable holding member 110. It is formed in the shape of a protrusion or a wall that defines an edge so as to engage the engaging portion 115.
The screw hole 106 is used for screwing the screw B used when the yoke 141 is fixed to the base 100, and the positioning pin 107 is used for positioning the yoke 141 when fixing the yoke 141 to the base 100. .

  As shown in FIGS. 6 to 10 and 13, the movable holding member 110 is substantially flat except for a part in the direction of the optical axis L2, narrow in the direction of the straight line S1, and long in the direction of the straight line S2. It is formed in a substantially rectangular flat plate shape, and has a cylindrical holding part 110a that holds the lenses G3, G4, and G5 with the optical axis L2 as the center, and two extending in the direction of the straight line S2 across the holding part 110a The extending portion 111, the fitting hole 112 for fitting and fixing the first driving magnet 122, the fitting hole 113 for fitting and fixing the second driving magnet 132, and the three spheres 150 as the support mechanism abut. Light is emitted from the three male engaging portions 115 and the male engaging portions 115 forming part of the engaging mechanism (regulating means) engaged with the three contact surfaces 114 and the three female engaging portions 105, respectively. Position the three protrusions 116 and the yoke 142 protruding in the direction of the axis L2. One of and a positioning projection 117 and the like.

The holding part 110a is formed in a flat cylindrical shape in the direction of the straight line S1 so as to hold the lenses G3, G4, G5 having cut surfaces parallel in the direction of the straight line S1.
As shown in FIG. 10, the three contact surfaces 114 have three (concave portions) in the optical axis L2 direction in a state where the optical axes L2 of the lenses G3, G4, and G5 coincide with the center C1 of the opening 100a of the base 100. In the range where the movable holding member 110 is two-dimensionally moved in a plane perpendicular to the optical axis L2 (a plane including the straight lines S1 and S2). In order not to deviate from the state of contact with the sphere 150 inserted in the corresponding concave portion 104, it is formed in a planar shape having a predetermined area.
The male engagement portion 115 forms part of an engagement mechanism that engages the movable holding member 110 with the base 100 so as to be movable within a plane perpendicular to the optical axis L2. Direction extending in the direction of the optical axis L2 and parallel to a plane perpendicular to the optical axis L2 so as to be rotated relative to the optical axis L2 with respect to the female engagement portion 105 of the base 100 It is formed so as to form a substantially L shape that bends.
Further, the three male engaging portions 115 are formed such that their bent tip portions are oriented in the same direction around the optical axis L2 (clockwise in FIG. 10).

  In other words, the engaging mechanism as the restricting means includes three female engaging portions 105 provided on the base 100 and three male engaging portions 115 provided on the movable holding member 110. Then, the three male engaging portions 115 are brought closer to the three female engaging portions 105 from the direction of the optical axis L2, and the movable holding member 110 rotates around the optical axis L2 by a predetermined angle with respect to the base 100. Then, the three male engaging portions 115 are respectively engaged with the three female engaging portions 105, and the movable holding member 110 is movably supported by the base 100 in a plane perpendicular to the optical axis L2. At the same time, the separation from the base 100 in the direction of the optical axis L2 is restricted. As described above, since the engagement mechanism is constituted by the simple male engagement portion 115 and the female engagement portion 105, the structure can be simplified and the assembly can be facilitated while reducing the number of components. Can do.

As shown in FIGS. 7, 8, and 13, the first drive mechanism 120 is formed as a voice coil motor including a first coil 121 and a first drive magnet 122.
As shown in FIGS. 12 and 13, the first coil 121 is formed so as to form a substantially elliptical ring having a major axis in the direction of the straight line S3 and a minor axis in the direction of the straight line S4 ′ as viewed from the direction of the optical axis L2. Then, it is fitted and fixed in the fitting recess 100b of the base 100.
The first coil 121 is arranged such that its long axis forms an inclination angle of 45 degrees with respect to the straight line S2 (the long axis is parallel to the straight line S3).
As shown in FIGS. 9, 10, and 13, the first drive magnet 122 is formed in a rectangular shape that is magnetized into an N pole and an S pole with a plane passing through the straight line S <b> 3 as a boundary, and the movable holding member 110. The fitting hole 112 is fitted and fixed.
The first drive mechanism 120 generates electromagnetic driving force in the first direction perpendicular to the optical axis L2, that is, the direction of the straight line S4 ′ by turning on / off the energization of the first coil 121. .

As shown in FIGS. 7, 8, and 13, the second drive mechanism 130 is formed as a voice coil motor including a second coil 131 and a second drive magnet 132.
As shown in FIGS. 12 and 13, the second coil 131 is formed so as to form a substantially elliptical ring having a major axis in the direction of the straight line S4 and a minor axis in the direction of the straight line S3 ′ when viewed from the optical axis L2. Then, it is fitted and fixed in the fitting recess 100e of the base 100.
The second coil 131 is arranged such that its long axis forms an inclination angle of 45 degrees with respect to the straight line S2 (the long axis is parallel to the straight line S4).
As shown in FIGS. 9, 10, and 13, the second drive magnet 132 is formed in a rectangular shape that is magnetized into N and S poles with a plane passing through the straight line S <b> 4 as a boundary, and the movable holding member 110. The fitting hole 113 is fitted and fixed.
The second drive mechanism 130 generates electromagnetic drive force in the second direction perpendicular to the optical axis L2, that is, the direction of the straight line S3 ′ by turning on / off the energization of the second coil 131. .

As shown in FIG. 13, the first drive mechanism 120 and the second drive mechanism 130 are symmetrical with respect to a straight line S1 orthogonal to the optical axis L2 of the lenses G3, G4, and G5 held by the movable holding member 110. Since the driving loads received by each are the same, and the driving force is exerted on both sides of the lenses G3, G4, G5, the movable holding member 110 is stabilized in a plane perpendicular to the optical axis L2. And can be driven smoothly.
In addition, since the first coil 121 and the second coil 131 are arranged so that the major axes thereof form a predetermined inclination angle (approximately 45 degrees) with respect to the straight line S2, the movable holding member 110 is moved along the straight line S2. When the shape is long in the direction, the first coil 121 and the second coil 131 are inclined to reduce the size of the movable holding member 110 in the direction of the straight line S1 and is perpendicular to the optical axis L2. The apparatus can be reduced in size and thickness in the direction (the direction of the straight line S1).

As shown in FIGS. 7, 14, and 15, the yoke 141 is formed in a substantially rectangular plate shape, and has an opening 141a, a bent portion 141b, a screw hole 141c, and 2 having substantially the same shape as the opening 100a. The two positioning holes 141d and the three restricting pieces 141e for restricting the protrusion 116 of the movable holding member 110 from moving beyond a predetermined range are provided.
That is, in addition to functioning as a magnetic path through which the magnetic field lines pass, the yoke 141 can receive a shock, vibration, etc. from the outside in a state where the male engagement portion 115 is engaged with the female engagement portion 105. The restricting piece 141e functions as a restricting member that restricts the movement of the protruding portion 116 and restricts the male engaging portion 115 from being detached from the female engaging portion 105.
7 and 8, the yoke 141 is disposed adjacent to the back surface of the flexible wiring board 180 so as to sandwich and bend and fix the flexible wiring board 180, and the base 100 using the screw B is used. It is designed to be detachably fixed to.
As shown in FIGS. 6 to 8, the yoke 142 is formed in a substantially rectangular plate shape, and has a circular opening 142a for receiving the holding portion 110a and two fitting holes 142b for fitting the positioning projections 117. It is formed to provide.
The yoke 142 is fixed to the front surface of the movable holding member 110 (and the first drive magnet 122 and the second drive magnet 132) while fitting the positioning protrusion 117 into the fitting hole 142b using an adhesive or the like. Yes.
As described above, by providing the yokes 141 and 142 included in a part of the driving means, it is possible to suppress the magnetic lines of force generated by the first driving mechanism 120 and the second driving mechanism 130 from leaking to the outside, and the magnetic efficiency. Can be increased.
Further, since the yoke 141 is also used as a regulating member, it is possible to increase the magnetic efficiency and simplify the structure by reducing the number of parts.

As shown in FIGS. 8, 12, and 13, the first return magnet 161 is formed in a substantially rectangular shape when viewed from the direction of the optical axis L2, and is magnetized to an S pole and an N pole with a plane passing through the straight line S3 as a boundary. At the same time, the first magnetic sensor 171 is sandwiched in the direction of the straight line S3 and is fitted and fixed to the two fitting recesses 100d of the base 100.
That is, the two first return magnets 161 have an inclination angle of 45 degrees with respect to the straight line S2 and are arranged on the straight line S3 so as to be substantially parallel to the long axis of the first coil 121.
The first return magnet 161 forms a magnetic path facing the first drive magnet 122 and exerts a magnetic action, and the movable holding member 110 is suspended for a predetermined time in a non-energized state where the first coil 121 is not energized. In this case, the lens G3, G4, G5 is returned to its position (a position where the optical axis L2 of the lens G3 coincides with the center C1 of the opening 100a of the base 100) and a stable holding force is generated.

As shown in FIGS. 8, 12, and 13, the second return magnet 162 is formed in a substantially rectangular shape when viewed from the direction of the optical axis L2, and is magnetized to the S pole and the N pole with a plane passing through the straight line S4 as a boundary. At the same time, it is fitted and fixed to the two fitting recesses 100g of the base 100 so as to sandwich the second magnetic sensor 172 in the direction of the straight line S4.
That is, the two second return magnets 162 are arranged on the straight line S4 at an inclination angle of 45 degrees with respect to the straight line S2 so as to be substantially parallel to the long axis of the second coil 131.
Then, the second return magnet 162 forms a magnetic path facing the second drive magnet 132 and exerts a magnetic action, and the movable holding member 110 is suspended for a predetermined period in a non-energized state where the second coil 131 is not energized. In this case, the lens G3, G4, G5 is returned to its position (a position where the optical axis L2 of the lens G3 coincides with the center C1 of the opening 100a of the base 100) and a stable holding force is generated.

As described above, in the resting state, the movable holding is performed by the magnetic attraction between the first return magnet 161 and the second return magnet 162 of the return means and the first drive magnet 122 and the second drive magnet 132 of the drive means. The member 110 (lenses G3, G4, G5) automatically returns (centering) to a predetermined rest position (a position where the optical axis L2 of the lenses G3, G4, G5 coincides with the center C1 of the opening 100a of the base 100). To be held stably. Therefore, drive control such as initialization is not required during driving, and rattling of the movable holding member 110 can be prevented in a resting state. In addition, since the first drive magnet 122 and the second drive magnet 132 of the drive means are also used to interact with the first return magnet 161 and the second return magnet 162 of the return means, the structure is simplified and the apparatus is downsized. Can be achieved.
Further, the arrangement direction of the two first return magnets 161 and the major axis of the first coil 121 are arranged substantially parallel to each other, and the arrangement direction of the two second return magnets 162 and the length of the second coil 131 are arranged. Since the shafts are arranged so as to be substantially parallel to each other, the magnetic force of the return magnets 161 and 162 and the magnetic force of the drive magnets 122 and 132 during driving (when the first coil 121 and the second coil 131 are energized) A force that prevents the movable holding member 110 from rotating around the optical axis L2 due to the interaction acts, and the return magnets 161 and 162 are arranged in the direction of the magnetization boundary line, so that the rotation of the movable holding member 110 is performed. A large moment can be obtained, and the movable holding member 110 can be quickly moved in a plane perpendicular to the optical axis L2 to be positioned at a desired position with high accuracy.

  The first magnetic sensor 171 and the second magnetic sensor 172 are, for example, Hall elements that detect changes in magnetic flux density and output them as electric signals. As shown in FIGS. 8, 12, and 13, the base 100 is fitted. The fitting recesses 100c and 100f (see FIG. 12) are respectively fitted and fixed. Here, in the moving range of the movable holding member 110, the first magnetic sensor 171 is disposed at a position facing the first drive magnet 122, and the second magnetic sensor 172 is disposed at a position facing the second drive magnet 132. Has been.

The first magnetic sensor 171 forms a magnetic circuit with the first drive magnet 122 fixed to the movable holding member 110, and is generated when the movable holding member 110 moves relative to the base 100. The position of the movable holding member 110 is detected by detecting a change in magnetic flux density.
Further, the second magnetic sensor 172 forms a magnetic circuit with the second drive magnet 132 fixed to the movable holding member 110, and is generated when the movable holding member 110 moves relative to the base 100. The position of the movable holding member 110 is detected by detecting a change in magnetic flux density.

  Thus, since the first magnetic sensor 171 and the second magnetic sensor 172 are fixed to the base 100, wiring is easier than when the first magnetic sensor 171 and the second magnetic sensor 172 are provided on the movable holding member 110, and disconnection or the like accompanying movement is prevented. In addition, since the first drive magnet 122 and the second drive magnet 132 are also used for position detection, the structure is simplified and the number of parts is reduced, compared with the case where a dedicated magnet is provided. Downsizing and the like can be achieved.

As shown in FIG. 7, the flexible wiring board 180 includes a connection part 181 connected to the first coil 121 of the first drive mechanism 120, a connection part 182 connected to the second coil 131 of the second drive mechanism 130, The connection portion 183 connected to the first magnetic sensor 171 and the connection portion 184 connected to the second magnetic sensor 172 are included.
7 and 8, the flexible wiring board 180 is disposed so as to contact the back surface of the base 100, the lead wire of the first coil 121 is connected to the connection portion 181, and the second coil 131 is connected. The lead wire is connected to the connecting portion 182, the terminal of the first magnetic sensor 171 is connected to the connecting portion 183, the terminal of the second magnetic sensor 172 is connected to the connecting portion 184, and the connecting portion 181, 182 is connected by the yoke 141. These regions are sandwiched and fixed while being bent.

As described above, the flexible wiring board 180 is disposed and fixed adjacent to the side opposite to the side where the movable holding member 110 is opposed to the base 100 that does not move in the plane direction perpendicular to the optical axis L2. There is no need to move in the plane direction perpendicular to the optical axis L2, and there is no need to bend the flexible wiring board 180 in the plane direction in which the movable holding member 110 moves.
Therefore, the arrangement space of the flexible wiring board 180 can be narrowed, and therefore the apparatus can be miniaturized and the durability can be improved.

Next, the assembly of the base 100, the movable holding member 110, and the yoke 141 will be described with reference to FIG. 16. The spherical body 150 is inserted into the concave portion 104, and the abutting surface 114 abuts on the spherical body 150. When the male engaging portion 115 is moved closer to the female engaging portion 105 from the optical axis L2 direction and the movable holding member 110 is rotated by a predetermined angle around the optical axis L2, the male engaging portion 115 is engaged with the female engaging portion. Engage with the mating portion 105. The movable holding member 110 is disposed so as to face the base 100 and is supported so as to be movable in a plane perpendicular to the optical axis L2 without leaving the base 100 in the direction of the optical axis L2.
In this state, the first return magnet 161 fixed to the base 100 and the first drive magnet 122 fixed to the movable holding member 110 magnetically attract, and the second return magnet fixed to the base 100. Since the 162 and the second drive magnet 132 fixed to the movable holding member 110 are magnetically attracted, the movable holding member 110 is regulated so as not to be separated from the base 100 even by a magnetic attraction force.
As described above, the engagement mechanism (the male engagement portion 115 and the female engagement portion 105) that engages the base 100 so that the movable holding member 110 is movable within a plane perpendicular to the optical axis L2 is employed as the restricting means. As a result, the number of parts can be reduced, the structure can be simplified, the assembly can be facilitated, and the urging force of the spring does not act as a driving load (resistance force) as in the prior art. It can be driven with high accuracy and smoothness, and can be reliably prevented from detaching from the base 100 in the direction of the optical axis L2 while movably supporting the movable holding member 110 with respect to the base 100, and is functionally reliable. Can be improved.

Next, the correction operation of the image blur correction apparatus M will be briefly described with reference to FIGS.
First, in a resting state in which the first coil 121 and the second coil 131 are not energized, the movable holding member 110 has a return means (first return magnet 161 and second return magnet 162) as shown in FIG. By the returning action, the optical axes L2 of the lenses G3, G4, G5 are returned (centered) to the rest position where they coincide with the center C1 of the opening 100a of the base 100 and held.
When the movable holding member 110 (lenses G3, G4, G5) is shifted upward as an example from the rest state shown in FIG. 17A, the first drive mechanism 120 is moved in the first direction (the direction of the straight line S4 ′). ) And a driving force is generated in the second driving mechanism 130 in an obliquely upward direction in the second direction (the direction of the straight line S3 ′). As a result, the movable holding member 110 is moved upward in the direction of the straight line S1, as shown in FIG.
In addition, when the movable holding member 110 (lenses G3, G4, G5) is shifted downward as an example from the rest state illustrated in FIG. 17A, the first drive mechanism 120 is moved in the first direction (the direction of the straight line S4 ′). ) And a driving force is generated in the second driving mechanism 130 in an obliquely downward direction in the second direction (the direction of the straight line S3 ′). As a result, the movable holding member 110 is moved downward in the direction of the straight line S1, as shown in FIG.

Subsequently, as shown in FIG. 18A, the movable holding member 110 is moved by the return action of the return means (the first return magnet 161 and the second return magnet 162) to the optical axis L2 of the lens G3, G4, G5. When the movable holding member 110 (lenses G3, G4, G5) is shifted to the left side as an example from the resting state in which the base member 100 returns to the resting position that coincides with the center C1 of the opening 100a of the base 100, the first drive mechanism 120 The driving force is generated obliquely upward in the first direction (the direction of the straight line S4 ′), and the driving force is generated diagonally downward in the second direction (the direction of the straight line S3 ′). Thereby, the movable holding member 110 is moved leftward in the direction of the straight line S2, as shown in FIG.
In addition, when the movable holding member 110 (lenses G3, G4, G5) is shifted to the right as an example from the rest state shown in FIG. 18A, the first drive mechanism 120 is moved in the first direction (the direction of the straight line S4 ′). ) And a driving force is generated in the second driving mechanism 130 diagonally upward in the second direction (the direction of the straight line S3 ′). Thereby, the movable holding member 110 is moved rightward in the direction of the straight line S2, as shown in FIG.

Thus, the movable holding member 110 is movably supported by the support mechanism (three spheres 150) and the engagement mechanism (three male engagement portions 115 and three female engagement portions 105). In the plane perpendicular to the optical axis L <b> 2 with respect to the base 100 by the electromagnetic driving force generated in cooperation with the first driving magnet 122 and the second driving magnet 132 by energizing the first coil 121 and the second coil 131. It is moved two-dimensionally and image blur due to camera shake or the like can be corrected with high accuracy.
Here, the long axis of the first coil 121 and the arrangement direction of the two first return magnets 161 are arranged to extend in the same direction, and the long axis of the second coil 131 and the two second return magnets 162 are arranged. Therefore, it is possible to suppress the behavior of the movable holding member 110 rotating around the optical axis L2 during driving (when the coils 121 and 131 are energized). In addition, the movable holding member 110 can be quickly moved in a plane perpendicular to the optical axis L2 and positioned at a desired position with high accuracy.

In the above embodiment, the case where three female engagement portions 105 are provided on the base 100 and three male engagement portions 115 are provided on the movable holding member 110 as the engagement mechanism as the restricting means is shown. In contrast, the base may be provided with three male engaging portions on the base and three female engaging portions on the movable holding member.
In the above embodiment, the case where the female engagement portion 105 formed in the shape of a wall having a protrusion or an edge and the male engagement portion 115 having a substantially L shape is employed as the engagement mechanism is shown. However, the present invention is not limited to these forms, and other forms of engagement mechanisms may be employed.
In the above embodiment, the case where the three female engaging portions 105 and the three male engaging portions 115 are employed has been described. However, the present invention is not limited to this, and four or more female engaging portions are used. And four or more male engaging portions may be employed.
In the above embodiment, the case where the yoke 141 is also used as the restricting member has been described. However, the present invention is not limited to this, and a dedicated restricting member may be provided.

In the above-described embodiment, the first coil 121 and the second coil 131 are substantially elliptical, but the present invention is not limited to this. The first coil 121 and the second coil 131 are not limited to this. A coil may be used.
In the above-described embodiment, the first magnetic sensor 171 and the second magnetic sensor 172 made of Hall elements are shown as the position detection means. However, the present invention is not limited to this, and other magnetic sensors may be adopted. .
In the above embodiment, the case where the restriction means (engagement mechanism) of the present invention is employed in the configuration in which the coils 121 and 131 are fixed to the base 100 and the drive magnets 122 and 132 are fixed to the movable holding member 110 is shown. However, the present invention is not limited to this, and conversely, even if the restricting means (engaging mechanism) of the present invention is employed in a configuration in which the drive magnet is fixed to the base and the coil is fixed to the movable holding member. Good.

In the above-described embodiment, the image blur correction device applied to the camera unit U mounted on the portable information terminal has been described. However, in the imaging lens unit including a plurality of imaging lenses, the image blur correction having the above configuration is performed. You may employ | adopt the structure containing an apparatus.
According to this, in a configuration in which a plurality of imaging lenses are arranged in the optical axis direction, the correction lenses G3, G4, and G5 that are held by the movable holding member 110 by including the image blur correction device described above. Is appropriately driven, and image blur due to camera shake or the like can be corrected smoothly and with high accuracy. That is, it is possible to provide an imaging lens unit to which the image blur correction function is added in addition to a plurality of imaging lenses.

  As described above, the image shake correction apparatus of the present invention has a simplified structure, a smaller and thinner apparatus in the optical axis direction of the lens and a direction perpendicular to the optical axis direction, and improved functional reliability. While achieving this, it is possible to correct image blur with high accuracy by camera shake, etc., and to automatically perform a return operation in a resting state, so that mobile phones and portable music that require miniaturization and thinning are required. Of course, the present invention can be applied to a camera unit mounted on a portable information terminal such as a player, and is also useful in a normal digital camera or other portable optical device.

It is a perspective view which shows the portable information terminal which mounts the camera unit in which the image blur correction apparatus of this invention was integrated. It is a perspective view which shows a camera unit. It is sectional drawing which shows the inside of a camera unit. It is a block diagram which shows the control system of an image blurring correction apparatus. It is sectional drawing of a camera unit. It is a perspective view of an image blur correction device. It is a disassembled perspective view of an image blur correction apparatus. It is sectional drawing of an image blur correction apparatus. It is a perspective view which shows a part (movable holding member etc.) of an image shake correction apparatus. It is a perspective view which shows a part (movable holding member etc.) of an image shake correction apparatus. 2 is a perspective view showing a part (a base or the like) of the image blur correction device. FIG. It is a rear view which shows a part (base etc.) of an image blur correction apparatus. FIG. 6 is a rear view showing a part (movable holding member, base, etc.) of the image blur correction device. FIG. 3 is a perspective view showing a part (yoke) of the image blur correction device. It is a rear view which shows an image shake correction apparatus. It is a perspective view explaining assembly of an image blur correction device. (A), (b), (c) is a top view explaining operation | movement of an image blur correction apparatus. (A), (b), (c) is a top view explaining operation | movement of an image blur correction apparatus.

Explanation of symbols

L1, L2 Optical axis PH Portable information terminal PH1 Housing PH2 Display unit PH3 Operation button PH4 Shooting window U Camera unit 10 Unit case 11 Projection part 12, 13, 14, 15 Holding part 20 Prism G1, G2, G3, G4 G5, G6 Lens 30 First movable lens group 31 Lens holding member 32 Guided portion 33 Restricted portion 34 U-shaped engaging portion 40 Filter 50 CCD
60 First drive unit 61 Guide shaft 62 Non-rotating shaft 63 Lead screw 64 Motor 65 Nut 66 Coil spring 70 Second drive unit 71 Guide shaft 73 Lead screw 74 Motor 75 Nut 80 Angular velocity sensor 90 Control unit 91 Control units 92 and 93 Motor Drive circuit 94 CCD drive circuit 95 Drive circuit 96 Position detection circuit 97 Angular velocity detection circuit M Image blur correction device B Screw S1, S2, S3, S4 Straight line S3 'Straight line (second direction)
S4 'straight line (first direction)
100 base 100a opening C1 center of opening 100b, 100c, 100d, 100e, 100f, 100g fitting recess 101 guided portion 102 regulated portion 103 U-shaped engaging portion 104 recess (support mechanism)
105 Female engagement part (engagement mechanism, restricting means)
106 Screw hole 107 Positioning pin 110 Movable holding member 110a Holding part 111 Extension part 112, 113 Fitting hole 114 Contact surface (support mechanism)
115 Male engagement part (engagement mechanism, restricting means)
116 Projection 117 Positioning projection 120 First drive mechanism (drive means)
121 1st coil 122 1st drive magnet 130 2nd drive mechanism (drive means)
131 Second coil 132 Second drive magnet 141 Yoke (regulating member)
141a opening 141b bent part 141c screw hole 141d positioning hole 141e regulating piece 142 yoke 142a opening 142b fitting hole 150 sphere (support mechanism)
161 First return magnet (return means)
162 Second return magnet (return means)
171 First magnetic sensor (position detecting means)
172 Second magnetic sensor (position detecting means)
180 Flexible wiring board 181, 182, 183, 184 connection part

Claims (6)

A base having an opening; a movable holding member for holding the lens; a support mechanism for supporting the movable holding member in a plane perpendicular to the optical axis of the lens; and the movable holding member from the base to the optical axis Restricting means including an engaging mechanism for engaging the movable holding member with the base so as to be movable in the plane so as to restrict separation in the direction, and the base for driving the movable holding member in the plane; A driving means including a driving magnet fixed to the other of the movable holding member, a position detecting means for detecting the position of the movable holding member, and a magnetic action of the driving magnet in a resting state, the movable holding member is Bei example a returning means comprising said base and fixed return magnet on one of the movable holding member in order to return to the rest position, and
The engagement mechanism is provided on at least three female engagement portions provided on one of the base and the movable holding member, and on the other of the base and the movable holding member, and the movable holding member is disposed on the base. At least three male molds having a substantially L-shape extending in the optical axis direction and bent in a direction parallel to the plane so as to be relatively rotated around the optical axis to be engaged with the female engagement portion. An engagement portion,
The return magnet restricts the movable holding member from rotating about the optical axis in cooperation with the drive magnet in a state where the male engagement portion is engaged with the female engagement portion. Formed to exert a magnetic action,
An image blur correction apparatus characterized by that. The restricting means includes a restricting member that restricts the male engaging portion from being detached from the female engaging portion.
The image blur correction apparatus according to claim 1 , wherein: It said drive means includes a coil fixed to one of the base and the movable holding member, said drive magnet fixed to the other of the base and the movable holding member in a position opposed to the coil, the base or the movable holding member Including a yoke fixed to the
The yoke also serves as the regulating member;
The image blur correction apparatus according to claim 2 , wherein The driving means includes a first coil fixed to one of the base and the movable holding member, and a first driving magnet fixed to the other of the base and the movable holding member and facing the first coil, A first driving mechanism that exerts a driving force in the first direction, a second coil fixed to one of the base and the movable holding member, and a second coil fixed to the other of the base and the movable holding member to face the second coil. A second drive mechanism including a second drive magnet and exerting a drive force in a second direction in the plane;
The return means is fixed to one of the base and the movable holding member so as to generate a magnetic force for returning to the rest position, and a first return magnet facing the first drive magnet, the second drive magnet, An opposing second return magnet,
The position detecting means includes a first magnetic sensor fixed to one of the base and the movable holding member and facing the first driving magnet, and a second magnetic sensor facing the second driving magnet.
Image blur correction device according to any one claims 1 to 3, characterized in that. In an imaging lens unit including a plurality of lenses for imaging,
It claims 1 comprises an image blur correction device according to any one 4,
An imaging lens unit characterized by that. In a camera unit including an image sensor,
It claims 1 comprises an image blur correction device according to any one 4,
A camera unit characterized by that.

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