JP7068581B2 - Camera actuators, camera modules, and camera-mounted devices - Google Patents

Description

The present invention relates to a camera actuator, a camera module, and a camera mounting device.

Conventionally, thin camera-mounted devices such as smartphones and digital cameras equipped with a camera module have been known. The camera module includes a lens unit having one or more lenses and an image pickup element that captures an image of a subject imaged by the lens unit.

Further, a bending optical system that bends the light from the subject along the first optical axis in the direction of the second optical axis and guides the light to the lens portion in the rear stage by a prism which is an optical path bending member provided in the front stage of the lens portion. A camera module comprising the above (for example, Patent Document 1) has also been proposed.

The camera module disclosed in Patent Document 1 includes a shake correction device that corrects camera shake that occurs in a camera, and an autofocus device that performs autofocus. Such a camera module has a shake correction actuator and an autofocus actuator as camera actuators. Of these, the runout correction actuator includes a first actuator and a second actuator that swing the prism around two different axes. When camera shake occurs in the camera, the shake correction actuator swings the prism under the control of the control unit to perform shake correction. This corrects the camera shake that occurs in the camera.

JP-A-2015-92285

By the way, in the case of the camera actuator disclosed in Patent Document 1 as described above, the movable side member holding the prism is directly supported by the fixed side member in a swingable state. Therefore, for example, when an impact is applied to a camera mounting device on which a camera actuator is mounted, the impact may be transmitted from the fixed side member to the movable side member, and the movable side member may be easily damaged. If such damage occurs on the movable side member, the accuracy of the above-mentioned runout correction may decrease.

An object of the present invention is to provide a camera actuator, a camera module, and a camera mounting device capable of alleviating an impact transmitted from a fixed side member to a movable side member.

One aspect of the camera actuator according to the present invention is a fixed side member, an optical path bending member that bends incident light along the first direction in the second direction, a movable side member that holds the optical path bending member, and a fixed side member. A first actuator that swings the movable side member around a swing center axis that is orthogonal to the first and second directions, and an elastic support that elastically supports the movable side member with respect to the fixed side member. The elastic support member is provided with a member, and the elastic support member is fixed at a position separated from each other by sandwiching the position of the swing center axis with the first fixing portion fixed to the movable side member at a position corresponding to the position of the swing center axis. It includes a pair of second fixing portions fixed to the side members, and a connecting portion extending from the pair of second fixing portions toward the position of the swing center axis and connecting to the first fixing portion.

One aspect of the camera module according to the present invention includes the above-mentioned actuator for a camera and an image pickup element arranged at the rear stage of the lens unit.

One aspect of the camera-mounted device according to the present invention includes the above-mentioned camera module and a control unit that controls the camera module.

According to the present invention, it is possible to provide a camera actuator, a camera module, and a camera mounting device capable of alleviating an impact transmitted from a fixed side member to a movable side member.

FIG. 1A is a front view of the camera module according to the first embodiment of the present invention. FIG. 1B is a rear view of the camera module according to the first embodiment. FIG. 1C is a plan view of the camera module according to the first embodiment. FIG. 1D is a bottom view of the camera module according to the first embodiment. FIG. 1E is a right side view of the camera module according to the first embodiment of the present invention. FIG. 1F is a left side view of the camera module according to the first embodiment of the present invention. FIG. 2 is a perspective view of the camera module according to the embodiment of the present invention. FIG. 3 is a perspective view showing the prism module of the camera module in a state where some members are omitted. FIG. 4 is a perspective view showing a prism module in which some members are omitted, as viewed from a different angle from that of FIG. FIG. 5 is a perspective view showing a state in which the holder is assembled to the first base. FIG. 6 is a perspective view of the first base. FIG. 7 is a plan view of the first base. FIG. 8 is a perspective view showing only the swing support spring taken out. FIG. 9 is a cross-sectional view of the prism module. FIG. 10 is a perspective view of the holder. FIG. 11 is a bottom view of the holder. FIG. 12 is an enlarged side view of the P portion of FIG. FIG. 13A is a perspective view of the lens module. FIG. 13B is a perspective view of the lens module as viewed from a different angle from FIG. 13A. FIG. 13C is a perspective view of the lens module in which some members are omitted. FIG. 14 is a perspective view showing a lens module in which some members are omitted, as viewed from a different angle from FIG. 13C. FIG. 15 is a side view of the lens module in which the second base is omitted. FIG. 16 is a side view showing a lens module in which the second base is omitted as viewed from the side opposite to FIG. 15. FIG. 17 is _a view taken along the line A1 of FIG. 15 regarding a lens module in which some members are omitted. FIG. 18 is a perspective view showing the springs taken out in the assembled state. FIG. 19 is a perspective view of the FPC, the AF actuator, and the rear OIS actuator. FIG. 20 is a perspective view of the FPC, the AF actuator, and the rear OIS actuator as viewed from a different angle from FIG. FIG. 21 is a circuit diagram of the AF drive control circuit. FIG. 22 is a perspective view of the second base. FIG. 23 is a perspective view of the second base as viewed from a different angle from FIG. 22. FIG. 24 is an exploded perspective view of the second base. FIG. 25 is a perspective view of the second base, the AF actuator, and the rear OIS actuator. FIG. 26 is a perspective view of the second base, the AF actuator, and the rear OIS actuator as viewed from a different angle from that of FIG. 25. FIG. 27 is a plan view of the lens module in which some members are omitted. FIG. 28 is a schematic plan view of the lens guide and the reference member. FIG. 29 is a plan view showing the lens module according to the second embodiment in a state where a part of the lens module is omitted. FIG. 30 is a circuit diagram of an OIS drive control circuit. FIG. 31 is a perspective view showing a modification 1 of the lens module. FIG. 32A is a front view showing an example of a camera-mounted device equipped with a camera module. FIG. 32B is a rear view showing an example of a camera-mounted device equipped with a camera module. FIG. 33A is a front view of an automobile equipped with an in-vehicle camera module. FIG. 33B is a perspective view of an automobile equipped with an in-vehicle camera module.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[Embodiment 1]
The camera module according to the first embodiment of the present invention will be described with reference to FIGS. 1A to 28. 1A to 1F are six views showing the appearance (design) of the camera module 1.

Hereinafter, the outline of the camera module 1 will be described, and then the specific structures of the prism module 2, the lens module 3, and the image sensor module 4 included in the camera module 1 will be described. The camera actuator, the camera module, and the camera-mounted device according to the present invention may or may not have all the configurations described later.

<Camera module>
The camera module 1 is equipped with a camera-mounted device on the mobile side such as a smartphone M (see FIGS. 32A and 32B), a mobile phone, a digital camera, a notebook computer, a tablet terminal, and a portable game machine, and an in-vehicle camera. It is installed in camera-mounted devices such as automobiles.

Hereinafter, each part constituting the camera module 1 of the present embodiment will be described with reference to the state of being incorporated in the camera module 1. Further, in explaining the structure of the camera module 1 of the present embodiment, the Cartesian coordinate system (X, Y, Z) shown in each figure is used.

The camera module 1 is mounted so that, for example, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction when shooting is actually performed by the camera-mounted device. The light from the subject is incident on the prism 23 of the prism module 2 from the + side (plus side) in the Z direction, as shown by the alternate long and short dash line α (also referred to as the first optical axis) in FIG. The light incident on the prism 23 is bent by the optical path bending surface 231 (see FIG. 9) of the prism 23 as shown by the alternate long and short dash line β (also referred to as the second optical axis) in FIGS. 3 and 13C, and the prism is formed. The light is guided to the lens portion 33 (see FIG. 13C) of the lens module 3 arranged after the 23 (that is, on the + side in the X direction). Then, the subject image imaged by the lens unit 33 is imaged by the image sensor module 4 (see FIG. 2) arranged in the rear stage of the lens module 3.

The above-mentioned camera module 1 is shake-corrected by a first shake correction device 24 (see FIG. 3) incorporated in the prism module 2 and a second shake correction device 35 (see FIG. 15) incorporated in the lens module 3. (OIS: Optical Image Stabilization) is performed. Further, in the above-mentioned camera module 1, the lens unit 33 is displaced in the X direction by the AF device 34 (see FIG. 15) incorporated in the lens module 3 to perform autofocus.

<Prism module>
The prism module 2 will be described with reference to FIGS. 1A to 12. The prism module 2 includes a first cover 21, a first base 22, a prism 23, and a first runout correction device 24.

<First cover>
As shown in FIGS. 1A to 2, the first cover 21 is made of, for example, a synthetic resin or a non-magnetic metal, and has a box shape with both sides in the Z direction and the + side in the X direction open. Light from the subject side can pass through the opening on the Z direction + side of the first cover 21 and enter the internal space of the first cover 21. The first cover 21 as described above is combined with the first base 22, which will be described later, from the + side in the Z direction.

<First base>
The first base 22 will be described with reference to FIGS. 6 and 7. The first base 22 has a box shape with openings on the + side in the Z direction and the + side in the X direction, respectively. The first base 22 has a base side opening 22b at the bottom wall portion 22a on the Z direction − side.

In the case of the present embodiment, the first coil 27c and the first Hall element 27e of the front OIS actuator 27 are arranged in the base side opening 22b.

The first base 22 has the holder 25 of the first runout correction device 24 via the swing support springs 26A and 26B described later, and the first shaft 29L (also referred to as a swing center shaft) parallel to the Y direction. ) Is possible to support the swing around. The first base 22 has a pair of first side wall portions 220 and 221 that are separated and opposed in the Y direction. Further, the first base 22 has a connection wall portion 222 that connects the ends of the pair of first side wall portions 220 and 221 on the X-direction side.

The first side wall portions 220 and 221 each have a first positioning convex portion 22c and a second positioning convex portion 22d at both ends in the X direction on the upper surface. The first positioning convex portion 22c and the second positioning convex portion 22d engage with the pair of swing support springs 26A and 26B (see FIG. 8) described later, respectively, to position the pair of swing support springs 26A and 26B. ing.

<First runout correction device>
The first runout correction device 24 will be described with reference to FIGS. 5 to 9. The first runout correction device 24 is the first actuator, and the prism 23 is swung around the first axis 29L (see FIG. 6) parallel to the Y direction, and the rotation direction around the first axis 29L. Perform runout correction. Such a first runout correction device 24 is arranged in the first accommodation space 223 (see FIG. 9) covered by the first base 22 and the first cover 21.

The first runout correction device 24 includes a holder 25, a pair of swing support springs 26A and 26B, a front OIS actuator 27, and the like.

In the first runout correction device 24, the holder 25 is displaceably supported (specifically, swingable) on the first base 22 via a pair of swing support springs 26A and 26B. In this state, the holder 25 swings about the first shaft 29L based on the driving force (specifically, the thrust in the X direction) of the front OIS actuator 27. When the front OIS actuator 27 is driven under the control of the control unit 5 (see FIG. 21), the holder 25 and the prism 23 swing around the first shaft 29L. As a result, the runout in the rotation direction about the first axis 29L is corrected. Hereinafter, a specific structure of each member included in the first runout correction device 24 will be described.

<Holder>
The holder 25 will be described with reference to FIGS. 5 and 9 to 11. The holder 25 is made of, for example, a synthetic resin and holds the prism 23. The holder 25 and the prism 23 are swingably supported by the first base 22 via a pair of swing support springs 26A and 26B described later.

The holder 25 includes a mounting surface 25a, a pair of facing wall portions 25b and 25c, a pair of overhanging portions 25d and 25e, and a connecting wall portion 25k.

The mounting surface 25a faces the optical path bending surface 231 of the prism 23 from the back side (Z direction − side). The mounting surface 25a has, for example, a surface parallel to the optical path bending surface 231. The mounting surface 25a is not limited to the structure of the present embodiment, and may be, for example, a boss capable of positioning the prism 23.

The pair of facing wall portions 25b and 25c are plate members parallel to the XZ plane, respectively, and are arranged in a state of being separated in the Y direction. Such a pair of facing wall portions 25b and 25c are arranged so as to sandwich the mounting surface 25a from the Y direction.

The pair of overhanging portions 25d and 25e are provided on the pair of facing wall portions 25b and 25c, respectively. Such a pair of overhanging portions 25d and 25e each support the holder 25 so as to be swingable with respect to the first base 22.

Specifically, one (that is, the Y direction + side) overhanging portion 25d is provided on the Y direction + side surface of the facing wall portion 25b, and overhangs from the side surface to the Y direction + side.

On the other hand, the other (that is, the Y-direction-side) overhanging portion 25e is provided on the Y-direction-side surface of the facing wall portion 25c, and overhangs from the side surface to the Y-direction-side. Further, the pair of overhanging portions 25d and 25e each have a flat surface-shaped spring bearing surface 25f and 25g (see FIG. 11) on the back surface (that is, the surface on the Z direction-side). The spring bearing surfaces 25f and 25g each have a pair of holder-side positioning protrusions 25h and 25i (see FIG. 11) protruding in the Z-direction at two locations separated in the X direction.

The Z-direction + side surfaces of the first fixing portions 262 of the pair of swing support springs 26A and 26B are adhesively fixed to the spring seat surfaces 25f and 25g, respectively. In this state, the pair of holder-side positioning protrusions 25h and 25i are inserted into the pair of second through holes 26c of the swing support springs 26A and 26B, respectively. With this structure, the holder 25 is swingably supported with respect to the first base 22.

The connection wall portion 25k connects the end portions of the pair of facing wall portions 25b and 25c on the X-direction side in the Y-direction.

Further, the holder 25 has a magnet holding portion 25j (see FIG. 9) for holding the first magnet 27a described later on the back surface.

<Swing support spring>
A pair of swing support springs 26A and 26B (also referred to as elastic support members) will be described with reference to FIG. The pair of swing support springs 26A and 26B each elastically support the holder 25, which will be described later, with respect to the first base 22. Further, the pair of swing support springs 26A and 26B each support the holder 25 so as to swing around the first shaft 29L (see FIG. 6) with respect to the first base 22.

The pair of swing support springs 26A and 26B are metal leaf springs, respectively, and have the upper surface of the first side wall portion 220 and 221 of the first base 22 and the lower surface of the pair of overhanging portions 25d and 25e of the holder 25. It is placed between.

Hereinafter, one of the pair of swing support springs 26A and 26B (that is, the + side in the Y direction) of the swing support spring 26A will be described. The other (that is, the Y-direction-side) swing support spring 26B is symmetrical with one swing support spring 26A in the Y direction. Therefore, among the configurations of the swing support spring 26B, the same configurations as those of the swing support spring 26A are designated by the same reference numerals.

The swing support spring 26A has a first fixing portion 262, a pair of second fixing portions 260, 261 and a pair of connecting portions 263, 264 and the like.

One of the pair of second fixing portions 260 and 261 (that is, the X direction + side) of the second fixing portion 260 is arranged at the end of the swing support spring 26A on the X direction + side. One such second fixing portion 260 has a first through hole 26a.

On the other hand, the other (that is, the X-direction-side) second fixing portion 261 is arranged at the end of the swing support spring 26A on the X-direction-side. The other second fixing portion 261 has a first through hole 26b. The pair of second fixing portions 260 and 261 are connected to the first fixing portion 262 by a pair of connecting portions 263 and 264 extending in the X direction, respectively.

In the case of the swing support spring 26A, the Z-direction-side surfaces of the pair of second fixing portions 260 and 261 are adhesively fixed to the Z-direction +-side end surfaces of the first side wall portion 220 of the first base 22. In this state, the first positioning convex portion 22c of the first side wall portion 220 is inserted into each of the first through holes 26a and 26b (see FIG. 6).

On the other hand, in the case of the swing support spring 26B, the Z-direction-side surfaces of the pair of second fixing portions 260 and 261 are adhesively fixed to the Z-direction +-side end surfaces of the first side wall portion 221 of the first base 22. There is. In this state, the second positioning convex portion 22d of the first side wall portion 221 is inserted into the first through holes 26a and 26b, respectively (see FIG. 6).

The first fixing portion 262 is provided at a portion between the second fixing portions 260 and 261 in the X direction via a gap in the X direction. The first fixing portion 262 has a pair of second through holes 26c.

The surface of the first fixing portion 262 on the + side in the Z direction is adhesively fixed to the spring seat surface 25f formed on the back surface of the overhanging portion 25d of the holder 25. The surface of the first fixing portion 262 of the swing support spring 26B on the + side in the Z direction is adhesively fixed to the spring seat surface 25g formed on the back surface of the overhanging portion 25e of the holder 25.

In the case of the swing support spring 26A, a pair of holder-side positioning convex portions 25h formed on the back surface of the overhanging portion 25d of the holder 25 are inserted into the pair of second through holes 26c, respectively. On the other hand, in the case of the swing support spring 26B, a pair of holder-side positioning convex portions 25i formed on the back surface of the overhanging portion 25e of the holder 25 are inserted into the pair of second through holes 26c, respectively.

Of the pair of connecting portions 263 and 264, the connecting portion 263 connects the second fixing portion 260 and the first fixing portion 262. On the other hand, of the pair of connecting portions 263 and 264, the connecting portion 264 connects the second fixing portion 261 and the first fixing portion 262.

Each of the pair of connecting portions 263 and 264 has a substantially S-shaped linear shape. The pair of connecting portions 263 and 264 are straight portions 26d and 26e parallel to the end portion (also referred to as one end portion) on the side close to the first fixing portion 262 in the Y direction (that is, parallel to the first axis 29L), respectively. Have.

The straight portion 26d of the connecting portion 263 and the straight portion 26e of the connecting portion 264 constitute the twist allowable portion 265. Such a twisting allowance portion 265 allows the first fixing portion 262 to be twisted with respect to the second fixing portions 260 and 261 by being twisted. That is, the holder 25 swings with respect to the first base 22 by twisting the twisting allowance portion 265. The first shaft 29L, which is the swing center of the holder 25, is composed of a twist allowance portion 265 of the swing support springs 26A and 26B. Therefore, the holder 25 does not need to include the swing center axis as a configuration. As described above, in the case of the present embodiment, the holder 25 is simply configured.

Further, the twisting allowance portion 265 allows the relative displacement of the second fixing portions 260 and 261 and the first fixing portion 262 in the Z direction by elastically deforming. That is, the twist permissible portion 265 allows the relative displacement of the first base 22 and the holder 25 in the Z direction by elastically deforming. With such a configuration, the impact transmitted from the first base 22 to the holder 25 is alleviated.

Although not shown, a gel-like vibration damping member may be provided on the twisting allowance portion 265 in the assembled state of the pair of swing support springs 26A and 26B. The vibration damping member may be provided so as to cover the twist allowable portion 265. Further, the vibration damping member may be in contact with the upper surface of the first side wall portion 220 or 221 of the first base 22. Further, the vibration damping member may be in contact with the upper surface of the first side wall portion 220 or 221 of the first base 22 and the lower surface of the pair of overhanging portions 25d and 25e of the holder 25.

The vibration damping member is effective in suppressing the resonance of the pair of swing support springs 26A and 26B. From the viewpoint of suppressing resonance, it is preferable that the vibration damping member is provided in the twist allowance portion 265 that is most deformed during use in the pair of swing support springs 26A and 26B. However, the vibration damping member may be provided in a portion other than the twist allowable portion 265 in the pair of swing support springs 26A and 26B.

In the assembled state of the pair of swing support springs 26A and 26B described above, the holder 25 and the first base 22 are not in direct contact with each other. That is, in the assembled state, the holder 25 and the first base 22 are connected only via the pair of swing support springs 26A and 26B. In other words, the holder 25 and the first base 22 are separated from each other except for the connection portion between the pair of swing support springs 26A and 26B. When the vibration damping member is in contact with the first base 22 and the holder 25, the first base 22 and the holder 25 are only the pair of swing support springs 26A and 26B and the vibration damping member. It is connected via.

Therefore, there is a gap of a predetermined distance between the peripheral surface of the first base 22 and the peripheral surface of the holder 25 facing the peripheral surface in the predetermined direction. In other words, the peripheral surface of the first base 22 and the peripheral surface of the holder 25 facing the peripheral surface in a predetermined direction are not in contact with each other. In other words, the holder 25 is supported (floating support) by a pair of swing support springs 26A and 26B so as to float with respect to the first base 22.

Specifically, for example, as shown in FIG. 9, the entire surface is between the upper surface of the bottom wall portion 22a of the first base 22 and the back surface of the holder 25 facing the low wall portion 22a in the Z direction. There is a predetermined gap in the Z direction.

Further, an inner side surface (side surface on the Y direction − side) of the first side wall portion 220 of the first base 22 and an outer surface (side surface on the Y direction + side) of the facing wall portion 25b of the holder 25 facing the inner side surface. There is a predetermined gap in the Y direction over the entire surface between the two.

Further, the inner side surface (Y direction + side side surface) of the first side wall portion 221 of the first base 22 and the outer side surface (Y direction − side side surface) of the facing wall portion 25c of the holder 25 facing the inner side surface. There is a predetermined gap in the Y direction across the front surface between them.

Further, the inner side surface (X direction + side side surface) of the connection wall portion 222 of the first base 22 and the outer side surface (X direction − side side surface) of the connection wall portion 25k of the holder 25 facing the inner side surface. Between them, there is a predetermined gap in the X direction over the entire surface.

Further, the upper surface (Z direction + side surface) of the first side wall portion 220 and 221 of the first base 22 and the lower surface (Z direction-) of the pair of overhanging portions 25d and 25e of the holder 25 facing the upper surface in the Z direction. There is a gap in the Z direction over the entire surface with the side surface).

In such a configuration, for example, when the camera mounting device is dropped, the pair of swing support springs 26A and 26B alleviate the impact applied to the holder 25 and the prism 23 from the first base 22. As a result, damage to the holder 25 when the camera-mounted device is dropped is suppressed.

<Front OIS actuator>
The front OIS actuator 27 (also referred to as a first actuator) will be described with reference to FIGS. 6 and 9. The front OIS actuator 27 swings the holder 25 around the first shaft 29L (see FIG. 6). The first axis 29L is an axis parallel to the Y direction. Specifically, the first shaft 29L is a straight line connecting the center positions of the pair of swing support springs 26A and 26B in the X direction of the first fixing portions 262.

The front OIS actuator 27 is arranged on the back side (that is, the Z direction-side) of the prism 23 and the holder 25 so as to overlap the optical path bending surface 231 and the holder 25 of the prism 23 in the Z direction (that is, the direction of the first optical axis). Has been done. The front OIS actuator 27 includes a first magnet 27a, a first coil 27c, a first Hall element 27e, and the like.

The first magnet 27a is fixed to the back side surface (that is, the surface on the Z direction − side) of the holder 25 which is a movable side member. Specifically, the first magnet 27a is fixed to the magnet holding portion 25j provided on the back surface of the holder 25.

The first magnet 27a is composed of two magnet elements adjacent to each other in the X direction. Each of these magnet elements is magnetized in the Z direction and has one magnetic pole on one side. The directions of the magnetic poles of each magnet element are opposite to each other. The first magnet 27a may be integrally composed of two magnet elements.

The first coil 27c and the first Hall element 27e are fixed to the surface (that is, the surface on the + side in the Z direction) of the flexible printed circuit board (hereinafter, FPC) 28 fixed to the back surface of the first base 22. There is.

The first coil 27c and the first Hall element 27e are arranged in the base-side opening 22b of the first base 22. The first coil 27c is an oval-shaped so-called air-core coil. The first coil 27c may be a so-called pattern coil printed on the surface of the FPC 28. The first Hall element 27e is arranged inside the first coil 27c in the radial direction.

The front OIS actuator 27 having the above configuration swings the holder 25 around the first shaft 29L (see FIG. 6) under the control of the control unit 5 (see FIG. 21).

Next, the lens module 3 will be described with reference to FIGS. 2 and 13A to 28.

<Lens module>
The lens module 3 includes a second cover 31, a second base 32, a lens unit 33, an AF device 34, and a second runout correction device 35. The lens module 3 shown in FIGS. 13A to 28 has different protrusion directions with respect to the second base 32 of the FPC terminal (such as the first terminal portion 34d1 described later) from the lens module 3 shown in FIG. 2, for example. .. However, since the structures of the other parts of the lens module 3 shown in FIGS. 13A to 28 are substantially the same as those of the lens module 3 shown in FIG. 2, the same reference numerals are given.

<Second cover>
The second cover 31 will be described with reference to FIGS. 2, 13A and 13B. The second cover 31 is made of, for example, a synthetic resin or a non-magnetic metal, and has a box shape with both sides in the X direction and the-side in the Z direction (that is, the back side) open.

Specifically, the second cover 31 has a top plate portion 31a, a front plate portion 31b, a rear plate portion 31c, a first side plate portion 31d, and a second side plate portion 31e.

The top plate portion 31a is a rectangular plate member. Such a top plate portion 31a is arranged on the + side in the Z direction of the second cover 31. The top plate portion 31a has a notch portion 31f at one end in the X direction (the end on the prism module 2 (see FIG. 2) side and the end on the X direction − side).

The cutout portion 31f is cut out from the end portion of the top plate portion 31a on the X direction − side toward the X direction + side. Such a notch portion 31f has a rectangular shape long in the Y direction in a plan view. A connection member 343d, which will be described later, is arranged in such a notch 31f.

The front plate portion 31b is a rectangular plate member, and extends from the end portion of the top plate portion 31a on the X direction − side to the Z direction − side. The front plate portion 31b has a front opening portion 31g in a portion including a central portion. The front opening portion 31g has a size such that the end face on the X-direction side of the lens portion 33 can be exposed to the X-direction-side. The light from the prism module 2 passes through the front opening portion 31g and enters the lens portion 33.

Further, the front opening portion 31g is continuous with the notch portion 31f of the top plate portion 31a. Therefore, the Z-direction + side edge portion of the front opening portion 31g does not exist at the corner portion 31h formed by the top plate portion 31a and the front plate portion 31b. Such a configuration can facilitate the processing of the front opening 31 g.

The rear plate portion 31c is a rectangular plate member, and extends from the end portion of the top plate portion 31a on the X direction + side to the Z direction − side. The rear plate portion 31c has a rear opening portion 31i in a portion including the central portion. The rear opening portion 31i has a size such that the end surface of the lens portion 33 on the X direction + side can be exposed to the X direction + side. The light from the lens unit 33 passes through the rear opening portion 31i and enters the image sensor module 4.

The first side plate portion 31d is a rectangular plate member, and extends from the end portion on the Y direction + side of the top plate portion 31a to the Z direction − side. Further, the second side plate portion 31e is a rectangular plate member, and extends from the end portion of the top plate portion 31a on the Y direction − side to the Z direction − side. The second cover 31 as described above is combined with the second base 32 described later from the + side in the Z direction.

<Second base>
The second base 32 will be described with reference to FIGS. 13C, 14 and 22-26. The second base 32, when combined with the above-mentioned second cover 31, forms a second accommodation space 32c (see FIG. 2) in which the lens unit 33, the AF device 34, and the second runout correction device 35 can be arranged. ..

The second base 32 is configured by combining a lower base element 32a and an upper base element 32b.

The second base 32 has a bottom surface portion 32d and a pair of second side wall portions 32g, 32h. The bottom surface portion 32d has a base portion made of synthetic resin and a metal reinforcing plate 32k insert-molded on the base portion. Such a reinforcing plate 32k contributes to high rigidity and thinning of the bottom surface portion 32d.

The reinforcing plate 32k of the second base 32 is arranged so as to overlap the lens guide 341 on the Z direction − side with respect to the lens guide 341 described later. Specifically, the lens guide 341 can move in the range that can be moved during the autofocus operation (that is, the range that can be moved in the X direction) and the range that can be moved during the runout correction operation (that is, the range that can be moved in the Y direction). The lens guide 341 is present on the Z direction + side of the reinforcing plate 32k regardless of the position of the reinforcing plate 32k. Therefore, the surface of the reinforcing plate 32k (that is, the surface on the + side in the Z direction) is always covered with the lens guide 341 and is not exposed. As a result, the reflected light from the reinforcing plate 32k is prevented from entering the lens unit 33 and the image pickup element of the image pickup element module 4 described later.

The second base 32 has bottom through holes 32e and 32f (see FIGS. 22 and 23) on both sides of the reinforcing plate 32k in the bottom surface portion 32d in the Y direction, respectively. As shown in FIGS. 25 and 26, the first AF coil 346b and the second AF coil 347b of the AF actuator 345 described later are arranged in the bottom through holes 32e and 32f, respectively.

The second side wall portions 32g and 32h extend from both ends of the bottom surface portion 32d in the Y direction to the + side in the Z direction, respectively. In the case of the present embodiment, as shown in FIG. 24, the second side wall portion 32g is a combination of the second lower wall element 32a1 of the lower base element 32a and the second upper wall element 32b1 of the upper base element 32b. It is composed of. Further, the second side wall portion 32h is configured by combining the second lower wall element 32a2 of the lower base element 32a and the second upper wall element 32b2 of the upper base element 32b.

As shown in FIGS. 25 and 26, the second side wall portions 32g and 32h have coil mounting portions 32i and 32j, respectively. The first OIS coil 352b and the second OIS coil 353b of the second runout correction device 35, which will be described later, are mounted on the coil mounting portions 32i and 32j, respectively. In the case of the present embodiment, the coil mounting portions 32i and 32j are provided on the upper surfaces of the second upper wall elements 32b1 and 32b2 of the upper base element 32b.

The coil mounting portion 32i is arranged between the first overhanging portion 34a1 and the second overhanging portion 34a3 of the lens guide 341 in the Z direction. Further, the coil mounting portion 32j is arranged between the first overhanging portion 34a2 and the second overhanging portion 34a4 of the lens guide 341 in the Z direction.

Further, as shown in FIG. 25, the first AF magnet 346a of the AF actuator 345 described later is arranged between the coil mounting portion 32i and the bottom surface portion 32d. Further, as shown in FIG. 26, a second AF magnet 347a of the AF actuator 345 is arranged between the coil mounting portion 32j and the bottom surface portion 32d. The first AF magnet 346a and the second AF magnet 347a are held by the lens guide 341 described later.

In the case of the present embodiment, the bottom through holes 32e and 32f and the coil mounting portions 32i and 32j are overlapped with each other at a predetermined interval in the Z direction. Therefore, the first AF coil 346b and the second AF coil 347b arranged in the bottom through holes 32e and 32f, and the first OIS coil 352b and the second OIS coil 353b mounted in the coil mounting portions 32i and 32j. And are overlapped in the Z direction with a predetermined interval.

Further, the second side wall portion 32g has spring arranging portions 32m1 and 32m3 (see FIG. 13C) for arranging the springs 342a1 and 342a3 described later at both ends in the X direction on the side surface on the + side in the Y direction. On the other hand, the second side wall portion 32h has spring arranging portions 32m2 and 32m4 (see FIG. 14) for arranging the springs 342a2 and 342a4 described later at both ends in the X direction on the side surface on the Y direction − side.

Further, the second base 32 has a reference portion 32n at the + side end portion in the X direction. The reference portion 32n is a plate member provided at the end on the + side of the second base 32 in the X direction. The side surface of the reference unit 32n on the + side in the X direction serves as a reference surface in the X direction of the image pickup device module 4, which will be described later. On the other hand, the reference portion 32n has a first reference surface 32n1 (see FIG. 23) which is a reference surface in the X direction of the lens guide 341 described later on the side surface on the X direction − side. Such a first reference surface 32n1 is also a reference for calibration described later. The reference portion 32n has a through hole in the central portion that guides the light that has passed through the lens portion 33 to the image pickup device module 4. Such a reference unit 32n is a member for positioning the image pickup device module 4.

<Lens part>
The lens unit 33 is arranged in the second accommodation space 32c (see FIG. 2) while being held by the lens guide 341 described later. Such a lens unit 33 has a cylindrical lens barrel and one or more lenses held in the lens barrel. As an example, the lens unit 33 has a telephoto lens group fixed between the end on the X-direction-side of the lens barrel and the end on the X-direction + side of the lens barrel, for example, 3 times or more optical. The structure of the lens unit 33 is not limited to the above-mentioned structure.

<AF device>
The AF device 34 will be described with reference to FIGS. 13C to 21. The AF device 34 is a drive unit that displaces the lens unit 33 in the X direction for the purpose of autofocus. Specifically, the AF device 34 includes a lens guide 341, a first support mechanism 342, a second support mechanism 343, an FPC 344, and an AF actuator 345.

<Lens guide>
The lens guide 341 will be described with reference to FIGS. 15 to 17. FIG. 15 is a view of the lens module 3 in a state where some members are omitted, as viewed from the + side in the Y direction. FIG. 16 is a view of the lens module 3 in a state where some members are omitted, as viewed from the Y direction − side. FIG. 17 is a view of the lens module 3 in a state where the second base 32 is omitted, as viewed from the X direction − side.

The lens guide 341 has a cylindrical lens holding portion 341a, a pair of first overhanging portions 34a1, 34a2, and a pair of second overhanging portions 34a3, 34a4. Such a lens guide 341 is arranged in the second accommodation space 32c in a state where it can be displaced in the X direction (that is, the direction of the second optical axis) and the Y direction.

The lens holding portion 341a has an accommodation space capable of holding the lens barrel.

The pair of first overhanging portions 34a1 and 34a2 are provided in a state of extending in opposite directions in the Y direction from two locations on the outer peripheral surface of the tubular lens holding portion 341a, respectively.

The pair of second overhanging portions 34a3 and 34a4 are located in the Y direction from two locations on the Z direction + side of the pair of first overhanging portions 34a1 and 34a2 on the outer peripheral surface of the cylindrical lens holding portion 341a, respectively. It is provided so as to extend in opposite directions.

One (Y direction + side) first overhanging portion 34a1 and one (Y direction + side) second overhanging portion 34a3 overlap each other via the space 34b1 in the Z direction. The first overhanging portion 34a2 on the other side (Y direction-side) and the second overhanging portion 34a4 on the other side (Y direction-side) overlap each other via the space 34b2 in the Z direction.

The lens guide 341 includes a first magnet holding portion 34a5 (see FIG. 15) that holds the first AF magnet 346a of the AF actuator 345 described later, and a first magnet holding portion 34a6 (FIG. 16) that holds the second AF magnet 347a. See). Specifically, the first magnet holding portions 34a5 and 34a6 are provided on the pair of first overhanging portions 34a1 and 34a2, respectively.

The first magnet holding portions 34a5 and 34a6 are recesses opened on the-side in the Z direction, respectively. Such first magnet holding portions 34a5 and 34a6 are arranged on the Z-direction-side of the pair of coil mounting portions 32i and 32j (see FIGS. 25 and 26) of the second base 32, respectively. Further, the pair of first magnet holding portions 34a5, 34a6 and the bottom through holes 32e, 32f of the second base 32 are provided on the same straight line parallel to the Z direction. The pair of first magnet holding portions 34a5 and 34a6 are provided on the + side in the Z direction with respect to the bottom surface through holes 32e and 32f.

The lens guide 341 has a second magnet holding portion 34a7 (see FIG. 15) that holds the first OIS magnet 352a of the rear OIS actuator 351 described later. Further, the lens guide 341 has a second magnet holding portion 34a8 (see FIG. 16) for holding the second OIS magnet 353a of the rear OIS actuator 351. Specifically, the second magnet holding portions 34a7 and 34a8 are provided in the pair of second overhanging portions 34a3 and 34a4, respectively.

The pair of second magnet holding portions 34a7 and 34a8 are recesses opened on the-side in the Z direction, respectively. Such a pair of second magnet holding portions 34a7 and 34a8 and the coil mounting portions 32i and 32j of the second base 32 are provided on the same straight line parallel to the Z direction. The pair of second magnet holding portions 34a7 and 34a8 are provided on the + side in the Z direction with respect to the coil mounting portions 32i and 32j.

The lens guide 341 has a third magnet holding portion 34b3 (see FIG. 15) that holds the first X position detecting magnet 346d of the AF actuator 345 in the vicinity of the first magnet holding portion 34a5. Further, the lens guide 341 has a third magnet holding portion 34b4 (see FIG. 16) that holds the second X position detection magnet 347d of the AF actuator 345 in the vicinity of the first magnet holding portion 34a6.

Specifically, the third magnet holding portions 34b3 and 34b4 are provided on the X-direction − side of the pair of first overhanging portions 34a1 and 34a2 with respect to the first magnet holding portions 34a5 and 34a6, respectively. The positions of the third magnet holding portions 34b3 and 34b4 are not limited to the above-mentioned positions as long as they are in the vicinity of the first magnet holding portions 34a5 and 34a6.

The lens guide 341 is a pair of fourth magnet holding portions 34b5, 34b6 (see FIGS. 15 and 16) that hold the Y position detection magnets 352c and 353c of the rear OIS actuator 351 in the vicinity of the first magnet holding portions 34a5 and 34a6. ).

Specifically, the pair of fourth magnet holding portions 34b5 and 34b6 are provided on the X direction + side of the pair of first overhanging portions 34a1 and 34a2 with respect to the first magnet holding portions 34a5 and 34a6, respectively. .. The positions of the pair of fourth magnet holding portions 34b5 and 34b6 are not limited to the above-mentioned positions as long as they are in the vicinity of the first magnet holding portions 34a5 and 34a6.

The lens guide 341 has a plurality of (six in the case of the present embodiment) ball holding portions 343a (see FIG. 14) for holding a plurality of balls 343e of the second support mechanism 343 described later. Specifically, three of these ball holding portions 343a are provided on the Z-direction + side surfaces of the pair of second overhanging portions 34a3 and 34a4.

The lens guide 341 is in a state of being most displaced in the X direction + side, and the end surface on the X direction + side of the lens guide 341 (hereinafter referred to as "lens guide side reference surface") is the first reference surface 32n1 of the reference portion 32n. Contact with.

The lens guide side reference plane of the lens guide 341 and the first reference plane 32n1 are flat planes parallel to the YZ plane, respectively. Therefore, in a state where the lens guide side reference surface of the lens guide 341 and the first reference surface 32n1 are in contact (surface contact), the lens guide 341 is Y in the X direction (that is, the direction of the second optical axis). It is in a state of not tilting in the direction and the Z direction (hereinafter, referred to as "reference state of the lens guide 341").

<First support mechanism>
The first support mechanism 342 will be described with reference to FIGS. 13C to 16 and 18. The first support mechanism 342 elastically supports the lens guide 341 on the second base 32 in a state where it can be displaced with respect to the second base 32. Such a first support mechanism 342 is also referred to as an elastic support mechanism.

The first support mechanism 342 has a plurality of springs 342a1 to 342a4 (four in the case of the present embodiment), each of which is an elastic support member. The springs 342a1 to 342a4 elastically support the lens guide 341 on the second base 32. In this state, the lens unit 33 can be displaced in the X direction and the Y direction with respect to the second base 32. Further, the displacement of the lens guide 341 in the Z direction with respect to the second base 32 is regulated within a predetermined range by the first support mechanism 342. The predetermined range is a range in which the lens guide 341 can be displaced based on the elastic deformation of the springs 342a1 to 342a4.

The spring 342a1 supports the end portions of the lens guide 341 on the X-direction + side and the Y-direction + side on the second base 32 (see FIG. 13C). The spring 342a2 supports the end of the lens guide 341 on the X-direction + side and the Y-direction-side on the second base 32 (see FIG. 14). The spring 342a3 supports the end of the lens guide 341 on the X-direction-side and the Y-direction +-side of the lens guide 341 on the second base 32 (see FIG. 13C). Further, the spring 342a4 supports the end portion of the lens guide 341 on the X-direction side and the Y-direction-side on the second base 32 (see FIG. 14).

The springs 342a1 to 342a4 each have a first fixing portion 342b, a second fixing portion 342c, and a connecting portion 342d, respectively, as shown in FIG. Note that FIG. 18 shows the springs 342a1 to 342a4 as they are arranged in the assembled state.

The first fixing portion 342b is fixed to the lens guide 341 which is a movable side member. The second fixing portion 342c is fixed to the second base 32 which is a fixing side member.

The connecting portion 342d connects the first fixing portion 342b and the second fixing portion 342c. The connecting portion 342d is made of, for example, a linear member that is at least partially curved (specifically, formed by bending in a meandering shape).

Specifically, each of the connecting portions 342d has a first bent portion 342e and a second bent portion 342f in order from the + side in the Z direction. Such springs 342a1 to 342a4 are arranged in the spring arrangement portions 32m1 to 32m4 (see FIGS. 13C and 14) of the second base 32, respectively.

The first bent portion 342e is a portion bent in a meandering shape, and is provided at one end portion (Z direction + side end portion) of the connecting portion 342d. Such a first bent portion 342e is elastically deformed in the length direction (Z direction) of the connecting portion 342d when the lens portion 33 is displaced in the Z direction with respect to the second base 32.

The position of the first bent portion 342e is not limited to the position of the present embodiment. The first bent portion 342e is preferably provided on one half of the connecting portion 342d (that is, the half on the first fixing portion 342b side). Further, it is more preferable that the first bent portion 342e is provided at one end of the connecting portion 342d as in the present embodiment. Although not shown, each of the first bent portions 342e may be covered with a gel-like damping member in the assembled state.

The second bent portion 342f is a linear member provided at the other end portion (end portion on the Z direction − side) of the connecting portion 342d and bent in a meandering shape. The second bent portion 342f is elastically deformed in the length direction (Z direction) of the connecting portion 342d when the lens portion 33 is displaced in the Z direction with respect to the second base 32. The amount of displacement of the second bent portion 342f when the lens portion 33 is displaced in the Z direction with respect to the second base 32 is smaller than the amount of displacement of the first bent portion 342e.

Further, when the lens portion 33 is displaced in the X direction with respect to the second base 32, the connecting portion 342d is displaced so as to swing around the vicinity of the end portion on the second fixed portion 342c side as a fulcrum. Therefore, the farther the connecting portion 342d is from the fulcrum (in other words, closer to the first fixed portion 342b), the larger the amount of displacement when the lens portion 33 is displaced in the X direction with respect to the second base 32.

The position of the second bent portion 342f is not limited to the position of the present embodiment. The second bent portion 342f is preferably provided on the other half of the connecting portion 342d (that is, the half on the second fixed portion 342c side). Further, it is more preferable that the second bent portion 342f is provided at the other end of the connecting portion 342d as in the present embodiment. Further, in the present embodiment, the second bent portion 342f may be omitted. That is, the connecting portion 342d may have a bent portion only at one position. Although not shown, each of the second bent portions 342f may be covered with a gel-like damping member.

In the case of the present embodiment, the connection portion 342d has a directionality in the X direction. The spring 342a1 and the spring 342a2 are arranged so as to be in the same direction in the X direction. In other words, the spring 342a1 and the spring 342a2 are arranged so that at least the connecting portions 342d overlap each other when viewed from the + side in the Y direction, for example.

The spring 342a3 and the spring 342a4 are arranged so as to be in the same direction in the X direction. In other words, the spring 342a3 and the spring 342a4 are arranged so that at least the connecting portions 342d overlap each other when viewed from the + side in the Y direction, for example.

The spring 342a1 and the spring 342a3 are arranged so that the connecting portion 342d faces the same direction in the X direction. The spring 342a2 and the spring 342a4 are arranged so that the connecting portion 342d faces the same direction in the X direction.

Further, in the case of the present embodiment, as shown in FIG. 18, for example, a straight line connecting the center of the spring 342a1 arranged at the diagonal position of the lens guide 341 and the center of the spring 342a4 when viewed from the Z direction + side is drawn. When L ₁ is defined and the straight line connecting the center of the spring 342a 2 and the center of the spring 342a 3 is L ₂ , the intersection of the straight line L ₁ and the straight line L ₂ (also referred to as the center position of the distributed arrangement) will be described later. It coincides with or almost coincides with the center of gravity G of the movable side member at the reference position.

The movable side member refers to the lens guide 341 and each member fixed to the lens guide 341 and displaceable together with the lens guide 341. Specifically, in the case of the present embodiment, the movable side member includes the lens guide 341, the lens unit 33, the first AF magnet 346a and the second AF magnet 347a of the AF actuator 345, and the first OIS of the rear OIS actuator 351. It is configured to include a magnet 352a, a second OIS magnet 353a, and the like.

The center of each spring 342a1 to 342a4 is, for example, the center position in the Z direction and the center position in the X direction of each spring 342a1 to 342a4. The reference position of the lens guide 341 means a state in which the lens guide 341 is not displaced in the X direction by the autofocus function and is not displaced in the Y direction by the second runout correction device 35 described later. With such a configuration _, the resonance of the lens guide 341 around the straight line L3 passing through the center of gravity G of the movable side member and parallel to the Z direction is reduced.

The springs 342a1 to 342a4 as described above are arranged as follows. When a straight line passing through the center of gravity G and parallel to the direction of the second optical axis (that is, the X direction) is a straight line L ₄ (see FIG. 18), the pair of springs 342a1 and 342a2 on the X direction + side are the straight lines. It is symmetrical with respect to L4 and is arranged at _two positions separated from the center of gravity G in the X direction + side (right side in FIG. 18) by a predetermined distance. On the other hand, the pair of springs 342a3 and 342a4 on the X-direction-side are symmetrical with respect to the straight line L4 and are arranged at _two positions separated from the center of gravity G on the X-direction-side (left side in FIG. 18) by the predetermined distance. To. As a result, the intersection of the straight line L ₁ and the straight line L ₂ coincides with the center of gravity G.

<Second support mechanism>
The second support mechanism 343 will be described with reference to FIGS. 13A to 17. The second support mechanism 343 supports the lens guide 341 on the second base 32 in a state where the displacement in the XY plane with respect to the second base 32 is possible. However, the second support mechanism 343 supports the lens guide 341 in a state where the displacement in the Z direction with respect to the second base 32 is restricted. Specifically, the second support mechanism 343 supports the lens guide 341 in a state in which the lens guide 341 cannot be displaced in the Z direction + side with respect to the second base 32.

The second support mechanism 343 has a plurality of ball holding portions 343a, a pair of track members 343b1, 343b2, a connecting member 343d, and a plurality of balls 343e.

The plurality of ball holding portions 343a are provided on the Z-direction + side surface of the second overhanging portions 34a3 and 34a4 of the lens guide 341. In the case of the present embodiment, three ball holding portions 343a are provided on each of the Z-direction + side surfaces of the second overhanging portions 34a3 and 34a4.

Each of the pair of track members 343b1 and 343b2 is, for example, a plate member parallel to the XY plane. Each of such a pair of track members 343b1 and 343b2 is made of a magnetic metal such as an iron-based alloy.

The track member 343b1 arranged on the + side in the Y direction and the first OIS magnet 352a are arranged on the same straight line parallel to the Z direction. Further, the track member 343b1 is arranged on the + side in the Z direction with respect to the first OIS magnet 352a.

Further, the track member 343b2 arranged on the − side in the Y direction and the second OIS magnet 353a are arranged on the same straight line parallel to the Z direction. Further, the track member 343b2 is arranged on the + side in the Z direction with respect to the second OIS magnet 353a.

With such an arrangement, the first OIS magnet 352a is attracted in the direction approaching the track member 343b1 (that is, the Z direction + side) based on its own magnetic force.

Further, the second OIS magnet 353a is attracted in the direction approaching the track member 343b2 (that is, the Z direction + side) based on its own magnetic force.

The force acting between the first OIS magnet 352a and the second OIS magnet 353a and the track member 343b1 and the track member 343b2 is, for example, when the springs 342a1 to 342a4 are omitted (that is, the embodiment described later). In the case of 2), the above-mentioned movable side member can be floated from the fixed side member (second base 32).

Specifically, the pair of orbital members 343b1 and 343b2 are on the Z direction + side of the second overhanging portions 34a3 and 34a4 of the lens guide 341, respectively, and on the Z direction + side of the second overhanging portions 34a3 and 34a4, respectively. It is provided facing the lens.

Each of the pair of track members 343b1 and 343b2 has a flat track surface 343c (see FIGS. 15 and 16) on the Z-direction-side surface. The raceway surface 343c faces the Z-direction + side surface of the second overhanging portions 34a3 and 34a4 in the Z-direction, respectively.

The ends of the pair of track members 343b1 and 343b2 on the X-direction side are connected to each other by the connecting member 343d. The connecting member 343d is arranged in the notch 31f of the top plate portion 31a in the second cover 31 (see FIGS. 13A and 13C). In this state, the connecting member 343d closes the entire notch portion 31f. As a result, the connecting member 343d prevents light from entering the lens portion 33 from the notch portion 31f. Further, the connecting member 343d is fixed to the second cover 31. Since the second cover 31 is fixed to the second base 32, the connecting member 343d and the pair of track members 343b1 and 343b2 are fixed to the second base 32 via the second cover 31.

Each of the plurality of balls 343e is held by the plurality of ball holding portions 343a. In the state of being held in this way, the plurality of balls 343e are rotatably arranged between the inner surface of the plurality of ball holding portions 343a and the track surfaces 343c of the pair of track members 343b1 and 343b2. .. Each of the plurality of balls 343e is in contact with the inner surface of the plurality of ball holding portions 343a and the track surface 343c of the pair of track members 343b1.

<FPC>
FPC344 will be described with reference to FIGS. 19-21, 25, and 26. The FPC 344 is a flexible printed circuit board and is fixed to a second base 32 (see FIGS. 13C and 14).

The FPC 344 includes an FPC base portion 344a, a first terminal portion 34d1, a second terminal portion 34d2, a third terminal portion 34d3, a first coil fixing portion 34d4, a second coil fixing portion 34d5, a first controller fixing portion 34d6, and a second controller. It has a fixing portion 34d7, a Hall element fixing portion 34d8, and an AF drive control circuit 344b (see FIG. 21).

The FPC base 344a is a plate member parallel to the XY plane and is fixed to the second base 32 (see FIGS. 13C and 14).

The first terminal portion 34d1 and the second terminal portion 34d2 each extend in the Z direction + side from two locations separated in the Y direction at the end portion of the FPC base portion 344a on the X direction + side. The first terminal portion 34d1 is electrically connected to the first OIS coil 352b. On the other hand, the second terminal portion 34d2 is electrically connected to the second OIS coil 353b.

The third terminal unit 34d3 is connected to the sensor board 6 (FIG. 21) on which the image sensor module 4 is mounted. As shown in FIG. 21, the third terminal portion 34d3 has a power supply terminal T1, a ground terminal T2, a data signal terminal T3, a first clock terminal T4, and a second clock terminal T5. With the FPC 344 connected to the sensor board 6, each terminal of the third terminal portion 34d3 is connected to each corresponding terminal in the board side circuit 6a of the sensor board 6.

The first coil fixing portion 34d4 and the second coil fixing portion 34d5 are provided at positions facing the first magnet holding portions 34a5 and 34a6 of the lens guide 341 in the Z direction on the Z-direction + side surface of the FPC base portion 344a, respectively. ing. Specifically, the first coil fixing portion 34d4 and the second coil fixing portion 34d5 are on one side (Y direction + side) in the Y direction about the second optical axis on the Z direction + side surface of the FPC base portion 344a. ) And the other side (Y direction-side) in the Y direction.

The first AF coil 346b and the second AF coil 347b are fixed to the first coil fixing portion 34d4 and the second coil fixing portion 34d5, respectively. The first coil fixing portion 34d4 and the second coil fixing portion 34d5 are arranged in the bottom through holes 32e and 32f (see FIGS. 22 and 23) of the second base 32, respectively.

The first controller fixing portion 34d6 and the second controller fixing portion 34d7 are provided in the vicinity of the first coil fixing portion 34d4 and the second coil fixing portion 34d5 on the Z-direction + side surface of the FPC base portion 344a, respectively. Specifically, the first controller fixing portion 34d6 and the second controller fixing portion 34d7 are located in the Z direction + side surface of the FPC base portion 344a, respectively, in the X direction with respect to the first coil fixing portion 34d4 and the second coil fixing portion 34d5. It is provided near the-side.

The first AF controller 346c and the second AF controller 347c are fixed to the first controller fixing portion 34d6 and the second controller fixing portion 34d7, respectively.

The Hall element fixing portion 34d8 is provided at a position facing the fourth magnet holding portion 34b6 (see FIG. 16) of the lens guide 341 in the Z direction on the Z-direction + side surface of the FPC base portion 344a. The OIS Hall element 353d of the rear OIS actuator 351 described later is fixed to the Hall element fixing portion 34d8.

As shown in FIG. 21, the AF drive control circuit 344b includes a first power supply line L1, a second power supply line L2, a first ground line L3, a second ground line L4, a first data signal line L5, and a second data signal. It has a line L6, a first clock line L7, a second clock line L8, a first coil feeding line L9, L10, and a second coil feeding line L11, L12.

The first power supply line L1 is a transmission line of current supplied from the control unit 5 mounted on the sensor board 6 to the first AF controller 346c. One end of the first power supply line L1 is connected to the power supply terminal T1 of the third terminal portion 34d3. The other end of the first power supply line L1 is connected to an input side power supply terminal (not shown) of the first AF controller 346c.

The second power supply line L2 is a transmission line of current supplied from the control unit 5 mounted on the sensor board 6 to the second AF controller 347c. One end of the second power supply line L2 is connected to the power supply terminal T1 of the third terminal portion 34d3. The other end of the second power supply line L2 is connected to a power supply input terminal (not shown) of the second AF controller 347c. As described above, the first power supply line L1 and the second power supply line L2 are branched in the middle.

The first ground line L3 is a transmission line for ground. One end of the first grounding line L3 is connected to the grounding terminal T2 of the third terminal portion 34d3. The other end of the first grounding line L3 is connected to the grounding terminal (not shown) of the first AF controller 346c.

The second ground line L4 is a transmission line for ground. One end of the second grounding line L4 is connected to the grounding terminal T2 of the third terminal portion 34d3. The other end of the second grounding line L4 is connected to the grounding terminal (not shown) of the second AF controller 347c. The first grounding line L3 and the second grounding line L4 are branched on the way.

The first data signal line L5 is a transmission line for a control signal between the control unit 5 and the first AF controller 346c. One end of the first data signal line L5 is connected to the data signal terminal T3 of the third terminal portion 34d3. The other end of the first data signal line L5 is connected to an input side data signal terminal (not shown) of the first AF controller 346c.

The second data signal line L6 is a transmission line for a control signal between the control unit 5 and the second AF controller 347c. One end of the second data signal line L6 is connected to the data signal terminal T3 of the third terminal portion 34d3. The other end of the second data signal line L6 is connected to an input side data signal terminal (not shown) of the second AF controller 347c. The first data signal line L5 and the second data signal line L6 are branched on the way.

The first clock line L7 is a clock signal transmission line between the control unit 5 and the first AF controller 346c. One end of the first clock line L7 is connected to the first clock terminal T4 of the third terminal portion 34d3. The other end of the first clock line L7 is connected to a clock terminal (not shown) of the first AF controller 346c.

The second clock line L8 is a clock signal transmission line between the control unit 5 and the second AF controller 347c. One end of the second clock line L8 is connected to the second clock terminal T5 of the third terminal portion 34d3. The other end of the second clock line L8 is connected to a clock terminal (not shown) of the second AF controller 347c.

The first coil feeding lines L9 and L10 are transmission lines connecting the first AF controller 346c and the first AF coil 346b.

One end of the first coil feeding line L9 is connected to the first terminal (not shown) in the output side power supply terminal of the first AF controller 346c. The other end of the first coil feeding line L9 is connected to one end of the first AF coil 346b.

One end of the first coil feeding line L10 is connected to a second terminal (not shown) in the output side power supply terminal of the first AF controller 346c. The other end of the first coil feeding line L10 is connected to the other end of the first AF coil 346b.

The second coil feeding lines L11 and L12 are transmission lines connecting the second AF controller 347c and the second AF coil 347b.

One end of the second coil feeding line L11 is connected to the first terminal (not shown) in the output side power supply terminal of the second AF controller 347c. The other end of the second coil feeding line L11 is connected to one end of the second AF coil 347b.

One end of the second coil feeding line L12 is connected to a second terminal (not shown) in the output side power supply terminal of the second AF controller 347c. The other end of the second coil feeding line L12 is connected to the other end of the second AF coil 347b.

The AF drive control circuit 344b as described above is connected to the sensor board 6 via the third terminal portion 34d3. As a result, the first AF controller 346c and the second AF controller 347c are connected to the control unit 5 mounted on the sensor board 6.

<AF actuator>
The AF actuator 345 will be described with reference to FIGS. 15, 16, and 20. The AF actuator 345 (also referred to as a third actuator) is a drive mechanism that displaces the lens guide 341 in the X direction (direction of the second optical axis) during autofocus.

The AF actuator 345 has a first AF actuator 346 arranged on the + side in the Y direction and a second AF actuator 347 arranged on the − side in the Y direction.

The first AF actuator 346 is a drive mechanism unit and includes a first AF magnet 346a, a first AF coil 346b, a first X position detection magnet 346d, and a first AF controller 346c.

The second AF actuator 347 is a drive mechanism unit and includes a second AF magnet 347a, a second AF coil 347b, a second X position detection magnet 347d, and a second AF controller 347c.

In such a first AF actuator 346 and a second AF actuator 347, the first AF magnet 346a and the second AF magnet 347a are fixed to the lens guide 341 which is a movable side member, and the first AF coil 346b and the second AF actuator 347 are fixed. (2) The AF coil 347b is a moving magnet type actuator fixed to the second base 32 which is a fixed side member.

The first AF actuator 346 and the second AF actuator 347 may be moving coil type actuators. Hereinafter, the arrangement of each part constituting the AF actuator 345 will be described.

The first AF magnet 346a and the second AF magnet 347a are held by the first magnet holding portions 34a5 and 34a6 of the lens guide 341, respectively. In this state, the first AF magnet 346a and the second AF magnet 347a are arranged on the Z direction + side of the pair of coil mounting portions 32i and 32j (see FIGS. 13C and 14) of the second base 32, respectively. In the case of the present embodiment, the first AF magnet 346a and the second AF magnet 347a each consist of two magnet elements (reference numerals omitted) arranged so as to be adjacent to each other in the Y direction. Each of these magnet elements is magnetized in the Z direction and is arranged so that the directions of the magnetic poles are opposite to each other.

Further, the first AF magnet 346a and the second AF magnet 347a are each long in the X direction and, for example, are rectangular parallelepipeds having a substantially rectangular shape when viewed from the Y direction (states shown in FIGS. 15 and 16). ..

The first AF coil 346b and the second AF coil 347b are oval-shaped so-called air-core coils that are fed during autofocus, respectively. The first AF coil 346b and the second AF coil 347b are fixed to the first coil fixing portion 34d4 and the second coil fixing portion 34d5 of the FPC 344 via a substrate (not shown) with their major axes aligned in the Y direction, respectively. Has been done.

As shown in FIG. 21, the first AF coil 346b is connected to the first AF controller 346c via the first coil feeding lines L9 and L10. The current value of the first AF coil 346b is controlled by the first AF controller 346c.

The first X position detection magnet 346d and the second X position detection magnet 347d are magnetized in the Z direction, and for example, the shape seen from the Y direction (states shown in FIGS. 15 and 16) is a rectangular parallelepiped having a substantially rectangular shape. be. Such a first X position detection magnet 346d and a second X position detection magnet 347d are held by a pair of third magnet holding portions 34b3 and 34b4 of the lens guide 341, respectively.

The first AF controller 346c is fixed to the first controller fixing portion 34d6 of the FPC 344. As shown in FIG. 21, such a first AF controller 346c has a first detection unit 346e and a first drive control unit 346f.

The first detection unit 346e detects the magnetic flux (also referred to as position information) between the first AF magnet 346a and the first X position detection magnet 346d. The first detection unit 346e sends the detected value to the first drive control unit 346f.

The first drive control unit 346f obtains the position (also referred to as the first position) of the first AF magnet 346a in the X direction based on the detection value received from the first detection unit 346e. Then, the first drive control unit 346f controls the current value of the first AF coil 346b based on the detection value received from the first detection unit 346e. The first AF controller 346c does not control the current value of the second AF coil 347b.

As described above, in the first AF actuator 346, closed loop control is performed based on the detection value of the first detection unit 346e. The first drive control unit 346f may be omitted. In this case, the process performed by the first drive control unit 346f may be performed by, for example, the control unit 5 mounted on the sensor board 6.

Further, the second AF controller 347c is fixed to the second controller fixing portion 34d7 of the FPC 344. As shown in FIG. 21, such a second AF controller 347c has a second detection unit 347e and a second drive control unit 347f.

The second detection unit 347e detects the magnetic flux (also referred to as position information) between the second AF magnet 347a and the second X position detection magnet 347d. The second detection unit 347e sends the detected value to the second drive control unit 347f.

The second drive control unit 347f obtains the position (also referred to as the second position) of the second AF magnet 347a in the X direction based on the detection value (information about the position) received from the second detection unit 347e. Further, the second drive control unit 347f controls the current value of the second AF coil 347b based on the detection value received from the second detection unit 347e. The second AF controller 347c does not control the current value of the first AF coil 346b.

As described above, in the second AF actuator 347, closed loop control is performed based on the detection value of the second AF controller 347c. The second drive control unit 347f may be omitted. In this case, the process performed by the second drive control unit 347f may be performed by, for example, the control unit 5 mounted on the sensor board 6.

In the case of the first AF actuator 346 and the second AF actuator 347 having the above-described configuration, the current is applied to the first AF coil 346b and the second AF coil 347b under the control of the first AF controller 346c and the second AF controller 347c. Causes a Lorentz force (thrust) that displaces the first AF magnet 346a and the second AF magnet 347a in the X direction.

Such thrust is switched by controlling the direction of the current flowing through the first AF coil 346b and the second AF coil 347b. As a result, the displacement direction of the lens guide 341 can be switched.

In the configuration of the present embodiment, the current value of the first AF coil 346b of the first AF actuator 346 and the current value of the second AF coil 347b of the second AF actuator 347 are independently controlled to control the first AF. The thrust generated by the actuator 346 and the thrust generated by the second AF actuator 347 can be made different.

Specifically, when the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347 are the same, the thrust generated by the AF actuator 345 consists only of the first thrust in the X direction. .. On the other hand, when the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347 are different, the thrust generated by the AF actuator 345 is the first thrust in the X direction and the movable side member. It has a second thrust, which is a moment around the center of gravity G.

Such a second thrust becomes a resistance force that resists an external force that tries to deviate the lens guide 341 from the X direction at the time of autofocus. As a result, the AF actuator 345 can reduce or eliminate the deviation amount of the lens guide 341 from the X direction during autofocus. The above-mentioned external force will be described later.

Further, in the case of the present embodiment, the AF actuator 345 resists an external force acting to deviate the movable side member (lens guide 341) from the Y direction when the second runout correction device 35, which will be described later, performs runout correction. It is also the second drive mechanism unit that generates the resistance force.

That is, when the second runout correction device 35 described later performs runout correction, the AF actuator 345 is subjected to the X direction of the first AF magnet 346a and the second AF magnet 347a by the first AF controller 346c and the second AF controller 347c. Detects the position in.

Then, the first AF controller 346c and the second AF controller 347c control the current values of the first AF coil 346b and the second AF coil 347b, respectively, based on the detected values. As a result, the AF actuator 345 generates a resistance force against an external force that tends to deviate the lens guide 341 from the Y direction when the second shake correction device 35 performs the shake correction. As a result, the AF actuator 345 can reduce or eliminate the deviation amount of the lens guide 341 from the Y direction at the time of runout correction.

<Second runout correction device>
The second runout correction device 35 will be described with reference to FIGS. 15, 16, and 20. The second runout correction device 35 is a drive unit, and by displacing the lens unit 33 in the Y direction, runout correction in the Y direction is performed. Such a second runout correction device 35 is arranged in the above-mentioned second accommodation space 32c (see FIG. 2).

The second runout correction device 35 includes the lens guide 341 described above, the plurality of springs 342a1 to 342a4 described above, the FPC 344 described above, and the rear OIS actuator 351.

The lens guide 341, the springs 342a1 to 342a4, and the FPC344 are common to the AF device 34.

The rear OIS actuator 351 (also referred to as a second actuator) is a drive mechanism, and includes a first OIS actuator 352 arranged on the + side in the Y direction and a second OIS actuator 353 arranged on the − side in the Y direction. Has.

As shown in FIG. 15, the first OIS actuator 352 is a drive mechanism unit, and is arranged in a state of being overlapped with the first AF actuator 346 at a predetermined interval in the Z direction. Such a first OIS actuator 352 has a first OIS magnet 352a, a first OIS coil 352b, and a Y position detection magnet 352c.

As shown in FIG. 16, the second OIS actuator 353 is a drive mechanism unit, and is arranged in a state of being overlapped with the second AF actuator 347 at a predetermined interval in the Z direction. Such a second OIS actuator 353 has a second OIS magnet 353a, a second OIS coil 353b, a Y position detection magnet 353c, and an OIS Hall element 353d.

By arranging the first OIS actuator 352 and the second OIS actuator 353 and the first AF actuator 346 and the second AF actuator 347 as described above, the center of the driving force of the rear OIS actuator 351 is the AF actuator 345. At or near the center of the driving force of. With this configuration, the lens guide 341 is less likely to undergo tilt displacement (that is, swing displacement about an axis parallel to the Y direction or Z direction) during autofocus and runout correction.

In the rear OIS actuator 351 as described above, the first OIS magnet 352a and the second OIS magnet 353a are fixed to the lens guide 341 which is a movable side member, and the first OIS coil 352b and the second OIS coil 353b are fixed. It is a moving magnet type actuator fixed to the second base 32 which is a member. However, the rear OIS actuator 351 may be a moving coil type actuator.

The first OIS magnet 352a and the second OIS magnet 353a are held by the second magnet holding portion 34a7 and the second magnet holding portion 34a8 of the lens guide 341, respectively.

In the case of the present embodiment, the first OIS magnet 352a and the second OIS magnet 353a each consist of two magnet elements (reference numerals omitted) arranged so as to be adjacent to each other in the Y direction. Each of these magnet elements is magnetized in the Z direction and is arranged so that the directions of the magnetic poles are opposite to each other.

The first OIS coil 352b and the second OIS coil 353b are oval-shaped so-called air-core coils that are fed at the time of runout correction, respectively. The first OIS coil 352b and the second OIS coil 353b are fixed to the coil mounting portions 32i and 32j of the second base 32 in a state where the major axes coincide with each other in the X direction. In this state, the first OIS coil 352b and the second OIS coil 353b are overlapped with the first OIS magnet 352a and the second OIS magnet 353a at predetermined intervals in the Z direction, respectively.

As described above, at least a part of the first OIS actuator 352 (the first OIS magnet 352a and the first OIS coil 352b) has the first overhanging portion 34a1 and the second overhanging portion 34a3 of the lens guide 341 in the Z direction. It is placed between. On the other hand, at least a part of the second OIS actuator 353 (second OIS magnet 353a and second OIS coil 353b) is between the first overhanging portion 34a2 and the second overhanging portion 34a4 of the lens guide 341 in the Z direction. Is located in. Such a configuration is effective for lowering the height of the lens module 3 and eventually the camera module 1.

The Y position detection magnet 352c is held by the fourth magnet holding portion 34b5 of the lens guide 341. Further, the Y position detection magnet 353c is held by the fourth magnet holding portion 34b6 of the lens guide 341.

As shown in FIG. 12, the OIS Hall element 353d is fixed to the Hall element fixing portion 34d8 (see FIG. 19) of the FPC 344. The OIS Hall element 353d detects the magnetic flux (also referred to as position information) of the Y position detection magnet 353c, and sends the detected value to the control unit 5 (see FIG. 21) mounted on the sensor board 6. The control unit 5 obtains the position of the Y position detection magnet 353c (that is, the lens guide 341) in the Y direction based on the detection value received from the OIS Hall element 353d.

In the case of the rear OIS actuator 351 having the above configuration, when a current flows through the first OIS coil 352b and the second OIS coil 353b via the FPC 344 under the control of the control unit 5, the first OIS magnet 352a and A Lorentz force is generated that displaces the second OIS magnet 353a in the Y direction. Since the first OIS magnet 352a and the second OIS magnet 353a are fixed to the lens guide 341, the lens guide 341 is displaced in the Y direction based on the Lorentz force. By controlling the direction of the current flowing through the first OIS coil 352b and the second OIS coil 353b, the displacement direction of the lens guide 341 is switched.

In the case of the present embodiment, in order to prevent crosstalk between the rear OIS actuator 351 and the AF actuator 345, the space between the first OIS magnet 352a and the first AF magnet 346a in the Z direction and the second Shield plates 7a and 7b (see FIGS. 19 and 20) made of magnetic metal are arranged between the OIS magnet 353a and the second AF magnet 347a in the Z direction.

<Image sensor module>
The image sensor module 4 is arranged on the + side in the X direction with respect to the lens unit 33. The image sensor module 4 includes an image sensor such as a CCD (charge-coupled device) type image sensor and a CMOS (complementary metal oxide semiconductor) type image sensor. The image pickup element of the image pickup element module 4 takes an image of the subject image formed by the lens unit 33 and outputs an electric signal corresponding to the subject image. A sensor board 6 is electrically connected to the image sensor module 4, and power is supplied to the image sensor module 4 via the sensor board 6 and an electric signal of a subject image captured by the image sensor module 4 is output. As such an image pickup device module 4, one having a conventionally known structure can be adopted.

<Operation of the second runout correction device and AF device>
Hereinafter, the operation of the second runout correction device 35 and the AF device 34 of the present embodiment will be described with reference to FIGS. 21 and 28. The description of the operation of the first runout correction device 24 will be omitted.

When the runout correction is performed by the second runout correction device 35, power is supplied to the first OIS coil 352b and the second OIS coil 353b. Specifically, in the second shake correction device 35, the first OIS is based on the detection signal from the shake detection unit (not shown, for example, a gyro sensor) so that the shake in the Y direction of the camera module 1 is offset. The current values of the coil 352b and the second OIS coil 353b are controlled. Such control is performed by, for example, the control unit 5. At this time, by feeding back the detected value of the OIS Hall element 353d to the control unit 5, the displacement of the lens guide 341 can be accurately controlled.

When power is supplied to the first OIS coil 352b and the second OIS coil 353b, the current flowing through the first OIS coil 352b and the magnetic field of the first OIS magnet 352a, and the current flowing through the second OIS coil 353b and the magnetic field of the second OIS magnet 353a. Lorentz force is generated in the first OIS coil 352b and the second OIS coil 353b by the interaction with (Fleming left hand law).

In the case of the present embodiment, the direction of the Lorentz force is either one or the other direction (also referred to as a specific direction) in the Y direction. Since the first OIS coil 352b and the second OIS coil 353b are fixed to the second base 32, a reaction force acts on the first OIS magnet 352a and the second OIS magnet 353a. This reaction force becomes the driving force of the voice coil motor for OIS, and the lens guide 341 holding the first OIS magnet 352a and the second OIS magnet 353a is displaced in the Y direction in the XY plane to correct the runout.

For the shake correction as described above, it is preferable to displace the lens guide 341 in parallel in the Y direction as shown by the arrow A _Y1 in FIG. 27, for example. However, at the time of runout correction, an external force (for example, a moment in the direction of arrow _Af in FIG. 27) that deviates the displacement of the lens guide 341 from the Y direction may act on the lens guide 341. When such an external force acts, the thrust acting on the lens guide 341 is only the thrust parallel to the Y direction (first thrust) generated by the second runout correction device 35, and the lens guide 341 has an arrow in FIG. 27. Like A _Y2 , it is displaced in a direction deviating from the Y direction. The above-mentioned external force is, for example, the center position of the distributed arrangement (the intersection of the straight line L1 and the straight line L2 in _FIG . 18) in the springs 342a1 to 342a4 constituting the _first support mechanism 342 and the above-mentioned movable side. It may occur due to the deviation of the member from the center of gravity G. Alternatively, the above-mentioned external force may be generated due to individual differences of the springs 342a1 to 342a4 constituting the first support mechanism 342, for example. Such an external force may be, for example, a force directed in the X direction in addition to the above-mentioned moment. Alternatively, the external force may include a moment and a force directed in the X direction.

On the other hand, in the case of the present embodiment, at the time of runout correction, the AF actuator 345 is driven under the control of the control unit 5 to generate a resistance force (second thrust) that resists the external force. Specifically, at the time of runout correction, the AF actuator 345 detects the position of the first AF magnet 346a by the first AF controller 346c (that is, the first detection unit 346e) and the second AF controller 347c (that is, that is). The position of the second AF magnet 347a is detected by the second detection unit 347e).

Then, the first AF controller 346c (that is, the first drive control unit 346f) receives a control signal (for example, a displacement direction and a displacement amount for runout correction) from the control unit 5, and the first detection unit 346e. The current value of the first AF coil 346b (hereinafter referred to as the first current value) is controlled based on the detected value. At the same time, the second AF controller 347c (that is, the second drive control unit 347f) has a current value of the second AF coil 347b (hereinafter referred to as a second current value) based on the detection value of the second detection unit 347e. To control. As a result, the AF actuator 345 generates the above-mentioned resistance force (for example, a moment) based on the thrust of the first AF actuator 346 and the thrust of the second AF actuator 347.

The first current value and the second current value are selected from the preliminary data stored in the first drive control unit 346f and the second drive control unit 347f, for example, by calibration performed in advance. This preliminary data is, for example, the displacement direction (for example, the direction of the arrow A _Y1 in FIG. 27) and the displacement amount D ₁ (see FIG. 27) when the lens guide 341 is displaced in the Y direction by the second runout correction device 35. ), The deviation direction of the lens guide 341 from the Y direction (for example, the direction of the arrow _AY in FIG. 27), and the deviation amount D2 of the lens guide 341 from the Y direction (see _FIG . 27). , The first current value and the second current value that make the deviation amount D ₂ stored in association with this correction parameter zero. In the above-mentioned calibration, the first current value and the second current value corresponding to the runout correction parameter are obtained in the range of the entire stroke in the Y direction of the lens guide 341.

The resistance force generated by the AF actuator 345 against the above-mentioned external force is, for example, a rotational moment in the direction of arrow _Ar in FIG. 27. Then, the AF actuator 345 causes the generated resistance force to act on the lens guide 341. As a result, the lens guide 341 on which the resultant force of the thrust parallel to the Y direction (also referred to as a specific direction) generated by the second runout correction device 35 and the resistance force generated by the AF actuator 345 acts has the above-mentioned external force. In the working state, it can be displaced parallel to the Y direction as shown by the arrow A _Y1 in FIG. 27.

Further, when the AF device 34 performs autofocus, power is supplied to the first AF coil 346b and the second AF coil 347b. In the case of this embodiment, the current value in the first AF coil 346b is controlled by the first AF controller 346c. Further, the current value in the second AF coil 347b is controlled by the second AF controller 347c.

Specifically, the first AF controller 346c is based on the control signal received from the control unit 5 via the first data signal line L5 and the detection value of the first detection unit 346e of the first AF controller 346c. (1) The current value (first current value) of the AF coil 346b is controlled.

Further, the second AF controller 347c is based on the control signal received from the control unit 5 via the second data signal line L6 and the detection value of the second detection unit 347e of the second AF controller 347c, and the second AF coil. The current value (second current value) of 347b is controlled.

When power is supplied to the first AF coil 346b and the second AF coil 347b, the current flowing through the first AF coil 346b and the magnetic field of the first AF magnet 346a, and the current flowing through the second AF coil 347b and the magnetic field of the second AF magnet 347a. A Lorentz force is generated in the first AF coil 346b and the second AF coil 347b by the interaction with the first AF coil 346b.

When the direction and magnitude of the Lorentz force generated from the first AF coil 346b and the Lorentz force generated from the second AF coil 347b are equal, the direction of the resultant force of each of these Lorentz forces is either one or the other in the X direction. Is. Since the first AF magnet 346a and the second AF magnet 347a are fixed to the second base 32, a reaction force acts on the first AF coil 346b and the second AF coil 347b. This reaction force becomes the driving force of the voice coil motor for AF, and the lens guide 341 holding the first AF coil 346b and the second AF coil 347b moves in the X direction (direction of the second optical axis), and autofocus is performed. Will be.

For autofocus as described above, it is preferable to displace the lens guide 341 in parallel with the X direction, for example, as shown by the arrow A _x1 in FIG. However, at the time of autofocus, an external force (for example, a moment in the direction of the arrow _Af in FIG. 27) that deviates the displacement of the lens guide 341 from the X direction may act on the lens guide 341. When such an external force acts, if the thrust acting on the lens guide 341 is only the thrust parallel to the X direction (first thrust), the lens guide 341 will move from the _X direction as shown by the arrow AX2 in FIG. It will be displaced in the deviating direction. Such an external force may be, for example, a force directed in the Y direction in addition to the above-mentioned moment. Alternatively, the external force may include a moment and a force directed in the Y direction.

On the other hand, in the case of the present embodiment, the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347 at the time of autofocus are different from each other, so that the thrust parallel to the X direction (first). Thrust) and a thrust that includes a resistance force (second thrust) that opposes the external force is generated. Specifically, at the time of autofocus, the AF actuator 345 detects the position of the first AF magnet 346a by the first AF controller 346c (that is, the first detection unit 346e) and the second AF controller 347c (that is, that is). The position of the second AF magnet 347a is detected by the second detection unit 347e).

Then, the AF actuator 345 controls the current value of the first AF coil 346b by the first AF controller 346c (that is, the first drive control unit 346f), and the second AF controller 347c (that is, the second drive control unit 347f). ) Controls the current value of the second AF coil 347b. As a result, the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347 are made different. Based on such a difference in thrust, the AF actuator 345 generates a thrust including a thrust parallel to the X direction (first thrust) and the above-mentioned resistance force (second thrust). Specifically, the thrust parallel to the X direction is the resultant force of the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347. Further, the above-mentioned resistance force (second thrust) is a moment generated based on the difference between the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347 (see the arrow _Ar in FIG. 27). ..

The first current value and the second current value are selected from preliminary data stored in the first drive control unit 346f and the second drive control unit 347f, for example, by calibration performed in advance. This preliminary data includes, for example, the displacement direction (for example, the direction of arrow Ax ₁ in FIG. 27), the amount of displacement D ₃ (see FIG. 27), and the lens when the lens guide 341 is displaced in the X direction by the AF actuator 345. The AF parameter consisting of the deviation direction of the guide 341 from the X direction (for example, the direction of the arrow AX in FIG. 27) and the deviation amount D ₄ of the lens guide 341 from the _X direction (see FIG. 27), and the AF parameter. The first current value and the second current value that make the deviation amount D ₄ stored in association with the parameters zero are included. In the above-mentioned calibration, the first current value and the second current value corresponding to the AF parameter are obtained in the range of the entire stroke in the X direction of the lens guide 341.

The resistance force generated by the AF actuator 345 against the above-mentioned external force is, for example, a rotational moment in the direction of arrow _Ar in FIG. 27. Then, the AF actuator 345 causes the generated thrust (the resultant force of the first thrust and the second thrust) to act on the lens guide 341. As a result, the lens guide 341 on which such a thrust is applied can be displaced in parallel in the X direction as shown by the arrow A _x1 in FIG. 27 in the state where the external force is applied.

As shown by the alternate long and short dash line in FIG. 28, the lens guide 341 is inclined with respect to the Y direction and the Z direction (specifically, the first reference plane 32n1 of the reference portion 32n) in the stopped state. There may be a force that causes it to act. Such a force is caused by an assembly error or an individual difference of the springs 342a1 to 342a4 constituting the first support mechanism 342. If such an inclination exists, the lens guide 341 will be displaced while maintaining this inclination during autofocus.

Therefore, in the case of the present embodiment, as shown by the solid line in FIG. 28, the end surface of the lens guide 341 on the X direction + side is in contact with the first reference surface 32n1 of the reference portion 32n (that is, the lens guide 341). The above calibration is performed with reference to the reference state). As a result, during the above-mentioned autofocus, the lens guide 341 maintains a state in which the reference unit 32n is not tilted with respect to the first reference surface 32n1 (that is, the state of the lens guide 341 shown by the solid line in FIG. 28). While doing so, it can be displaced in the X direction. Further, according to the above configuration, there is a possibility that the work of active alignment between the prism module 2 and the lens module 3 can be omitted or simplified in the assembly process of the camera module 3.

<About the action / effect of this embodiment>
As described above, according to the camera module 1 according to the present embodiment, in the prism module 2, the impact transmitted from the first base 22 which is a fixed side member to the holder 25 which is a movable side member is a pair of swing support springs. It is alleviated by 26A and 26B.

Further, in the case of the present embodiment, the pair of swing support springs 26A and 26B (specifically, the straight portions 26d and 26e) constitute the first shaft 29L which is the swing center of the holder 25. In such a configuration, it is not necessary to provide the swing center shaft in the holder 25, and it is not necessary to provide the bearing portion for receiving the swing center shaft in the first base 22. For this reason. The configuration of the holder 25 and the first base 22 is simple.

Further, in the case of the present embodiment, since the holder 25 is supported (floating support) so as to float with respect to the first base 22, there is no hard contact point between the holder 25 and the first base 22. Therefore, when an impact is applied to the camera module 1, indentations or the like due to the impact do not occur on the holder 25 or the first base 22.

[Embodiment 2]
The second embodiment according to the present invention will be described with reference to FIGS. 29 and 30. The camera module of the present embodiment has a structure of the rear OIS actuator 351B of the second runout correction device different from that of the above-described first embodiment. Hereinafter, the camera module of the present embodiment will be described focusing on a structure different from that of the first embodiment.

The rear OIS actuator 351B is a drive mechanism and has a first OIS actuator 352B arranged on the + side in the Y direction and a second OIS actuator 353B arranged on the − side in the Y direction.

The first OIS actuator 352B has a first OIS magnet 352a and a pair of first OIS coils 352b1 and 352b2. The first OIS magnet 352a is the same as that of the first embodiment described above.

The pair of first OIS coils 352b1 and 352b2 are oval-shaped so-called air-core coils that are fed at the time of runout correction, respectively. The pair of first OIS coils 352b1 and 352b2 are fixed to the coil mounting portion 32i of the second base 32 in a state where the major axes coincide with each other in the X direction and are separated from each other in the X direction.

The second OIS actuator 353B includes a second OIS magnet 353a, a pair of second OIS coils 353b1, 353b2, a first OIS controller 353e, and a second OIS controller 353f. The second OIS magnet 353a is the same as that of the first embodiment described above.

The pair of second OIS coils 353b1 and 353b2 are oval-shaped so-called air-core coils that are fed at the time of runout correction, respectively. The pair of second OIS coils 353b1 and 353b2 are fixed to the coil mounting portion 32j of the second base 32 in a state where the major axes coincide with each other in the X direction and are separated from each other in the X direction.

Although not shown, the second OIS coil 353b1 is electrically connected to the first OIS coil 352b1. The second OIS coil 353b2 is electrically connected to the first OIS coil 352b2.

As shown in FIG. 30, the first OIS coil 352b1 and the second OIS coil 353b1 are connected to the first OIS controller 353e via the first coil feeding lines L9a and L10a. The current values of the first OIS coil 352b1 and the second OIS coil 353b1 are controlled by the first OIS controller 353e.

Further, as shown in FIG. 30, the first OIS coil 352b2 and the second OIS coil 353b2 are connected to the second OIS controller 353f via the second coil feeding lines L11a and L12a. The current values of the first OIS coil 352b2 and the second OIS coil 353b2 are controlled by the second OIS controller 353f.

The first OIS controller 353e is fixed to the FPC344B. Such a first OIS controller 353e has a first detection unit 353g and a first drive control unit 353h.

The first detection unit 353g detects the magnetic flux (also referred to as position information) of the second OIS magnet 353a at the position where the first detection unit 353g is fixed. The first detection unit 353g sends the detected value to the first drive control unit 353h.

The first drive control unit 353h controls the current values of the first OIS coil 352b1 and the second OIS coil 353b1 based on the detection values received from the first detection unit 353g. The first drive control unit 353h does not control the current values of the first OIS coil 352b2 and the second OIS coil 353b2.

The second OIS controller 353f is fixed to the FPC344B. Such a second OIS controller 353f has a second detection unit 353i and a second drive control unit 353j.

The second detection unit 353i detects the magnetic flux (also referred to as position information) of the second OIS magnet 353a at the position where the second detection unit 353i is fixed. The second detection unit 353i sends the detected value to the second drive control unit 353j.

The second drive control unit 353j controls the current values of the first OIS coil 352b2 and the second OIS coil 353b2 based on the detection values received from the second detection unit 353i. The second drive control unit 353j does not control the current values of the first OIS coil 352b1 and the second OIS coil 353b1.

The rear OIS actuator 351B as described above is connected to the control unit 5 by the OIS drive control circuit 344c as shown in FIG. The OIS drive control circuit 344c is provided in the FPC 344B.

As shown in FIG. 30, the OIS drive control circuit 344c includes a first power supply line L1a, a second power supply line L2a, a first ground line L3a, a second ground line L4a, a first data signal line L5a, and a second data signal. It has a line L6a, a first clock line L7a, a second clock line L8a, a first coil feeding line L9a, L10a, and a second coil feeding line L11a, L12a. Such an OIS drive control circuit 344c is substantially the same as the AF drive control circuit 344b in the first embodiment described above. Therefore, detailed description of the OIS drive control circuit 344c will be omitted. Regarding the OIS drive control circuit 344c, the description of the AF drive control circuit 344b in the above-described first embodiment can be appropriately read.

The configuration of the present embodiment as described above is by independently controlling the current values of the first OIS coil 352b1 and the second OIS coil 353b1 and the current values of the first OIS coil 352b2 and the second OIS coil 353b2. , The thrust generated by the actuator (hereinafter referred to as the first actuator) composed of the first OIS coil 352b1, the second OIS coil 353b1, the first OIS magnet 352a, and the second OIS magnet 353a, and the first OIS coil 352b2. , The thrust generated by the actuator composed of the second OIS coil 353b2, the first OIS magnet 352a, and the second OIS magnet 353a (hereinafter referred to as the second actuator) can be made different.

Specifically, when the thrust generated by the first actuator and the thrust generated by the second actuator are the same, the thrust generated by the rear OIS actuator 351B consists only of the first thrust in the Y direction. On the other hand, when the thrust generated by the first actuator and the thrust generated by the second actuator are different, the thrust generated by the rear OIS actuator 351B is the thrust generated by the first actuator and the thrust generated by the second actuator. It has a first thrust in the Y direction, which is a resultant force, and a second thrust, which is a moment around the center of gravity G of the movable side member generated based on this resultant force.

Such a second thrust becomes a resistance force that resists an external force that tries to deviate the lens guide 341 from the Y direction at the time of runout correction. As a result, the rear OIS actuator 351B can reduce or eliminate the deviation amount of the lens guide 341 from the X direction at the time of runout correction. Other configurations and actions / effects are the same as those in the above-described first embodiment.

The operation of the camera module according to the present embodiment at the time of runout correction may be appropriately read as the operation of the camera module according to the above-described first embodiment. Further, the configuration of the present embodiment can be appropriately combined with the configuration of the above-described first embodiment within a technically consistent range.

<Additional Notes>

Although the invention made by the present inventor has been specifically described above based on the embodiment, the present invention is not limited to the above-described embodiment and can be changed without departing from the gist thereof.

In each of the above embodiments, the camera module has a first support mechanism that elastically supports the movable side member with respect to the fixed side member, and the movable side member can be displaced with respect to the fixed side member in the XY plane. It is equipped with a second support mechanism that supports it so that it cannot be displaced in the Z direction.

However, when the present invention is carried out, the configuration of the support mechanism that supports the movable side member in a displaceable manner with respect to the fixed side member is not limited to the above-mentioned first support mechanism and second support mechanism.

For example, when carrying out the present invention, at least one of the above-mentioned first support mechanism and second support mechanism may be omitted. For example, the lens module 3B shown in FIG. 31 has a configuration in which the first support mechanism 342 (see FIGS. 13C, 14 and 18) is omitted from the lens module 3 of the above-described first and second embodiments. ..

That is, the lens module 3B shown in FIG. 31 has the second support mechanism 343 (FIG. 13C and FIG. 13C and FIG. (See FIG. 14) only. The structure of the second support mechanism 343 is the same as that of the first embodiment described above. Further, since the lens module 3B shown in FIG. 31 does not have the first support mechanism 342, the configuration corresponding to the first support mechanism 342 (for example, the spring arrangement portions 32m1 to 32m4 of the base 2 and the like, FIG. 13C and (See FIG. 14) also does not have.

Although not shown, the lens module has only the first support mechanism 342 in the above-described first and second embodiments as a support mechanism that displaceably supports the movable side member with respect to the fixed side member. May be. Further, the first support mechanism that elastically supports the movable side member with respect to the fixed side member may be configured by a plurality of suspension wires (not shown) instead of the spring arrangement portions 32m1 to 32m4.

Further, for example, in each of the above-described embodiments, a smartphone, which is a mobile terminal with a camera, has been described as an example of a camera-mounted device including the camera module 1, but the present invention has been obtained with a camera module and a camera module. It can be applied to a camera-mounted device having an image processing unit that processes image information. Camera-mounted devices include information equipment and transportation equipment. The information device includes, for example, a mobile phone with a camera, a notebook computer, a tablet terminal, a portable game machine, a web camera, and an in-vehicle device with a camera (for example, a back monitor device and a drive recorder device). Transportation equipment also includes, for example, automobiles.

33A and 33B are diagrams showing an automobile V as a camera-mounted device for mounting an in-vehicle camera module VC (Vehicle Camera). 33A is a front view of the automobile V, and FIG. 33B is a rear perspective view of the automobile V. The automobile V is equipped with the camera module 1 described in the embodiment as the in-vehicle camera module VC. As shown in FIGS. 33A and 33B, the vehicle-mounted camera module VC may be attached to the windshield toward the front or attached to the rear gate toward the rear, for example. This in-vehicle camera module VC is used for a back monitor, a drive recorder, a collision avoidance control, an automatic driving control, and the like.

Further, the configurations of the AF voice colle motor and the OIS voice coil motor in the present invention are not limited to those shown in the above-described embodiments.

Further, as a support mechanism for supporting the movable side member with respect to the fixed side member, instead of the springs 342a1 to 342a4 of the first support mechanism 342 shown in each of the above-described embodiments, for example, an elastic support member made of an elastomer or the like is used. It can also be applied.

The present invention can also be applied to a lens driving device that does not have an OIS function but has only an AF function. Further, the present invention can be applied to a lens driving device which does not have an AF function and has only an OIS function.

It should be considered that each of the above-described embodiments disclosed this time is exemplary in all respects and is not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The camera actuator and camera module according to the present invention can be mounted on a thin camera-mounted device such as a smartphone, a mobile phone, a digital camera, a notebook computer, a tablet terminal, a portable game machine, or an in-vehicle camera.

1 Camera module 2 Prism module 21 First cover 22 First base 22a Bottom wall part 22b Base side opening 22c First positioning convex part 22d Second positioning convex part 220, 221 First side wall part 222 Connection wall part 223 First accommodation Space 23 Prism 231 Optical path bending surface 24 First runout correction device 25 Holder 25a Mounting surface 25b, 25c Opposing wall part 25d, 25e Overhanging part 25f, 25g Spring seat surface 25h, 25i Holder side positioning convex part 25j Magnet holding part 25k connection Wall 26A, 26B Swing support spring 262 First fixing part 260, 261 Second fixing part 263, 264 Connection part 26a, 26b First through hole 26c Second through hole 26d, 26e Straight part 265 Twisting allowance part 27 Front side OIS Actuator (first actuator)
27a 1st magnet 27c 1st coil 27e 1st Hall element 28 FPC
29L 1st axis 3, 3B Lens module 31 2nd cover 31a Top plate 31b Front plate 31c Rear plate 31d 1st side plate 31e 2nd side plate 31f Notch 31g Front opening 31h Square 31i Rear opening 32 Second base 32a Lower base element 32b Upper base element 32c Second accommodation space 32d Bottom part 32e, 32f Bottom through hole 32g, 32h Second side wall part 32a1 Second lower wall element 32a2 Second lower wall element 32b1 Second upper Wall element 32b2 Second upper wall element 32i, 32j Coil mounting part 32k Reinforcing plate 32m1, 32m2, 32m3, 32m4 Spring arrangement part 32n Reference part 32n1 First reference surface 33 Lens part 34 AF device 341 Lens guide 341a Lens holding part 34a1 , 34a2 1st overhanging part 34a3, 34a4 2nd overhanging part 34a5, 34a6 1st magnet holding part 34a7, 34a8 2nd magnet holding part 34b1, 34b2 Space 34b3, 34b4 3rd magnet holding part 34b5, 34b6 4th magnet holding part Part 342 First support mechanism 342a1, 342a2, 342a3, 342a4 Spring 342b First fixing part 342c Second fixing part 342d Connection part 342e First bending part 342f Second bending part 343 Second support mechanism 343a Ball holding part 343b1, 343b2 Member 343c Track surface 343d Connection member 343e Ball 344, 344B FPC
344a FPC base 34d1 1st terminal 34d2 2nd terminal 34d3 3rd terminal 34d4 1st coil fixing 34d5 2nd coil fixing 34d6 1st controller fixing 34d7 2nd controller fixing 34d8 Hall element fixing 344b AF drive Control circuit L1, L1a 1st power supply line L2, L2a 2nd power supply line L3, L3a 1st grounding line L4, L4a 2nd grounding line L5, L5a 1st data signal line L6, L6a 2nd data signal line L7, L7a 1 clock line L8, L8a 2nd clock line L9, L10, L9a, L10a 1st coil power supply line L11, L12, L11a, L12a 2nd coil power supply line T1 power supply terminal T2 ground terminal T3 data signal terminal T4 1st clock terminal T5 Second clock terminal 344c OIS drive control circuit 345 AF actuator (third actuator)
346 First AF Actuator 346a First AF Magnet 346b First AF Coil 346c First AF Controller 346d First X Position Detection Magnet 346e First Detection Unit 346f First Drive Control Unit 347 Second AF Actuator 347a Second AF Magnet 347b First 2 AF coil 347c 2nd AF controller 347d 2nd X position detection magnet 347e 2nd detection unit 347f 2nd drive control unit 35 2nd runout correction device 351, 351B Rear OIS actuator (2nd actuator)
352, 352B 1st OIS actuator 352a 1st OIS magnet 352b, 352b1, 352b2 1st OIS coil 352c Y position detection magnet 353, 353B 2nd OIS actuator 353a 2nd OIS magnet 353b, 353b1, 353b2 2nd OIS coil 353c Y position Detection magnet 353d OIS Hall element 353e 1st OIS controller 353f 2nd OIS controller 353g 1st detection unit 353h 1st drive control unit 353i 2nd detection unit 353j 2nd drive control unit 4 image pickup element module 5 control unit 6 sensor board 6a board Side circuit 7a, 7b Shield plate M Smartphone V Automobile VC In-vehicle camera module

Claims (16)

Fixed side member and
A movable side member that holds an optical path bending member that bends incident light along the first direction in the second direction,
A first actuator that swings the movable side member with respect to the fixed side member about a swing center axis parallel to the first direction and the third direction orthogonal to the second direction.
An elastic support member that elastically supports the movable side member with respect to the fixed side member,
Equipped with
The movable side member has a pair of facing wall portions facing each other in the third direction, and a pair of overhanging portions protruding from the pair of facing wall portions in a direction away from each other in the third direction.
The fixed side member has a pair of side wall portions facing each other in the third direction.
The elastic support member is arranged in a state parallel to the XY plane orthogonal to the first direction.
A first fixing portion fixed to each of the pair of overhanging portions ,
A second fixing portion fixed to each of the pair of side wall portions ,
A connection portion connecting the first fixing portion and the second fixing portion ,
Have,
Camera actuator. The camera actuator according to claim 1, wherein the connection portion is a linear member whose at least a part is bent in a meandering shape. The movable side member has a mounting surface inclined with respect to the XY plane for mounting the optical path bending member between the pair of facing wall portions, and the mounting surface is inclined between the pair of facing wall portions. The camera actuator according to claim 1 or 2, which holds an optical path bending member. The camera actuator according to any one of claims 1 to 3, wherein the elastic support member is provided between the facing surfaces of the pair of overhanging portions and the pair of side wall portions. The camera according to any one of claims 1 to 4, wherein the first fixing portion is fixed to the lower surface of the pair of overhanging portions, and the second fixing portion is fixed to the upper surface of the pair of side wall portions. Actuator for. The camera actuator according to any one of claims 1 to 5 , wherein the connecting portion has a twisting allowance portion that is twisted so as to swing the movable side member. The camera actuator according to claim 6 , wherein the twist allowing portion extends in a direction parallel to the swing center axis. The camera actuator according to any one of claims 1 to 7 , wherein the elastic support member supports the movable side member so as to float from the fixed side member. The camera actuator according to any one of claims 1 to 8 , wherein the elastic support member is arranged on both sides of the optical path bending member in a third direction parallel to the swing center axis. The optical path bending member has an optical path bending surface and has an optical path bending surface.
The camera actuator according to any one of claims 1 to 9 , wherein the first actuator is arranged on the back side of the optical path bending surface with respect to the optical path bending member. The camera actuator according to any one of claims 1 to 10 , wherein the optical path bending member and the first actuator are arranged apart from each other in the first direction. The first direction extends from the top to the bottom of the camera actuator.
The first actuator is located at the bottom of the camera actuator.
The camera actuator according to any one of claims 1 to 11 . The lens portion arranged at the rear stage of the optical path bending member and
A second actuator that displaces the lens portion in the first direction and a third direction orthogonal to the second direction.
The camera actuator according to any one of claims 1 to 12 , further comprising a third actuator that displaces the lens portion in the second direction. The first actuator and the second actuator constitute an actuator for runout correction, and the first actuator and the second actuator constitute an actuator for runout correction.
The third actuator constitutes an autofocus actuator.
The camera actuator according to claim 13 . The camera actuator according to any one of claims 1 to 14 .
An image sensor arranged after the camera actuator and
Camera module with. The camera module according to claim 15 ,
A control unit that controls the camera module and
Camera-mounted device with.

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