JP7231865B2 - Actuator for camera, camera module, and camera mounting device - Google Patents

Description

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

2. Description of the Related Art Conventionally, thin camera-equipped devices equipped with camera modules, such as smartphones and digital cameras, are known. A camera module includes a lens unit having one or more lenses, and an imaging element that captures a subject image formed by the lens unit.

In addition, a bending optical system in which light from a subject along the first optical axis is bent in the direction of the second optical axis by a prism, which is an optical path bending member provided in the front stage of the lens section, and guided to the rear lens section. A camera module has also been proposed (for example, Patent Document 1).

A camera module disclosed in Japanese Patent Application Laid-Open No. 2002-200000 includes a shake correction device that corrects camera shake that occurs in the 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 actuators, the shake correction actuator has a first actuator and a second actuator that swing the prism about two different axes. When the camera shakes, the shake correction actuator swings the prism under the control of the controller. This corrects camera shake.

JP 2015-92285 A

By the way, in the case of the camera actuator disclosed in Patent Document 1 as described above, since the first actuator and the second actuator of the shake correction actuator are arranged around the prism, the design around the prism is Freedom may be reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camera actuator, a camera module, and a camera mounting device that can improve the degree of freedom in designing the periphery of an optical path bending member.

One aspect of the camera actuator according to the present invention includes:
a movable side member holding an optical path bending member that bends incident light along the direction of the first optical axis;
a fixed-side member that rockably supports the movable-side member;
a driving unit having a magnet and a coil facing each other in the direction of the first optical axis and rocking the movable member;
the stationary member supports one of the magnet and the coil;
The movable-side member supports the other member of the magnet and the coil on the back surface, and faces the contacted surface provided on the fixed-side member or a member fixed to the fixed-side member in the direction of the first optical axis. It has a convex part on the back side.
When implementing the camera actuator described above, the fixed side member may have a bottom wall portion having an opening for arranging one member.
Also, the member fixed to the fixed side member may be a spacer that is provided in the opening so as to surround the one member and faces the convex portion in the direction of the first optical axis.
Also, the contacted surface may be provided on the spacer.
Further, when the other member is displaced along with the movable side member in the direction of the first optical axis, the convex portion contacts the contacted surface before the other member contacts the one member. good.

One aspect of the camera module according to the present invention includes the camera actuator described above, and an image pickup device disposed downstream of the camera actuator .

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

ADVANTAGE OF THE INVENTION According to this invention, the actuator for cameras, the camera module, and the camera mounting apparatus which can improve the freedom of design around an optical-path bending member can be provided.

1 is a perspective view of a camera module according to Embodiment 1; FIG. 2 is a perspective view of the camera module with the case omitted; FIG. FIG. 3 is a perspective view of the camera module viewed from a different angle from FIG. 2 with the case omitted; FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1; 2 is a cross-sectional view taken along line CC of FIG. 1; FIG. FIG. 4 is a perspective view of a first base; FIG. 4 is a perspective view of a state in which the holder is attached to the first base; FIG. 9A is a perspective view of the prism module with the first cover omitted, and FIG. 9B is an E- view of FIG. It is a sectional view corresponding to the E section. It is a perspective view which extracts and shows only a holding spring. FIG. 2 is a cross-sectional view of the lens module taken along line DD of FIG. 1; FIG. 4 is a perspective view of the lens module with the second cover omitted; 13 is a perspective view of the lens module with the second cover omitted, viewed from a different angle from FIG. 12; FIG. FIG. 4 is a perspective view of a second base; FIG. 15 is a perspective view of the second base seen from an angle different from that of FIG. 14; It is a perspective view of a lens guide. FIG. 4 is a perspective view showing the spring taken out in an assembled state. FIG. 4 is a perspective view showing only the FPC of the lens module taken out; It is a perspective view showing only the reference member taken out. FIG. 10 is a perspective view of a camera module according to Embodiment 2; FIG. 4 is a cross-sectional view of a prism module portion of the camera module; 1 is a perspective view showing an example of a camera-equipped device equipped with a camera module; FIG. FIG. 10 is a cross-sectional view of the prism module of the camera module according to Embodiment 3, taken along line CC of FIG. 1; FIG. 24 is an enlarged view of part E of FIG. 23; FIG. 2 is a cross-sectional view of the prism module taken along line AA of FIG. 1; FIG. 4 is a perspective view of a state in which some members are assembled to the first base; FIG. 27 is a perspective view of a state in which a swing support spring is attached to the first base in the state shown in FIG. 26; FIG. 4 is a perspective view of the prism module with the first cover and prisms omitted; FIG. 4 is a perspective view of the prism module with the first cover omitted; FIG. 4 is a perspective view showing the swing support spring taken out in an assembled state; FIG. 30 is a partial side view seen from the right side of FIG. 29; FIG. 3 is a perspective view of a holder; FIG. 12 is a perspective view showing a second actuator and an AF actuator of the camera module according to Embodiment 4; FIG. 11 is a perspective view showing a lens module of a camera module according to Embodiment 5 with some members omitted; It is a perspective view showing the second actuator, the AF actuator, the reinforcing plate, and the FPC taken out. It is a perspective view showing the second actuator, the AF actuator, and the reinforcing plate taken out. FIG. 21 is a perspective view showing a second actuator and an AF actuator of the camera module according to Embodiment 6; FIG. 21 is a perspective view showing a lens module of a camera module according to Embodiment 7 with some members omitted; It is a perspective view showing the second actuator and the AF actuator taken out. FIG. 11 is a perspective view showing a prism module of a camera module according to Embodiment 8 of the present invention with some members omitted. FIG. 41 is a perspective view showing the prism module with some members omitted, viewed from an angle different from that in FIG. 40; FIG. 4 is a perspective view of a state in which the holder is attached to the first base; FIG. 4 is a perspective view of a first base; 4 is a plan view of the first base; FIG. It is a perspective view which extracts and shows only a holding spring. FIG. 2 is a perspective view of a lens module with some members omitted; FIG. 47 is a perspective view showing the lens module with some members omitted, viewed from a different angle from that in FIG. 46; FIG. 3 is a side view of the lens module with the second base omitted; FIG. 49 is a side view showing the lens module with the second base omitted, viewed from the opposite side of FIG. 48; FIG. 4 is a perspective view showing only the FPC of the lens module taken out; FIG. 4 is a perspective view showing the spring taken out in an assembled state. 52A is a schematic diagram showing a gel locking portion of a spring according to Embodiment 8, FIG. 52B is a schematic diagram showing Modification 1 of the gel locking portion, and FIG. It is a schematic diagram which shows the modification 2 of a part.

Hereinafter, several examples of embodiments according to the present invention will be described in detail based on the drawings. It should be noted that each of the following embodiments can be implemented in combination as appropriate as long as they are not technically inconsistent.

[1. Embodiment 1]
FIG. 1 is a perspective view of a camera module 1 according to Embodiment 1 of the present invention. 2 and 3 are perspective views of the camera module 1 with the case removed. 4 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 5 is a cross-sectional view taken along line BB of FIG. Hereinafter, after explaining the outline of the camera module 1, the specific structures of the prism module 2, the lens module 3, and the imaging element module 4 included in the camera module 1 will be explained.

[1.1 Camera module]
The camera module 1 is installed in a thin camera-equipped device such as a smart phone (see FIG. 22), a mobile phone, a digital camera, a notebook computer, a tablet terminal, a portable game machine, or an in-vehicle camera.

Each part constituting the camera module 1 of the present embodiment will be described below based on the state in which it is incorporated in the camera module 1 . Also, an orthogonal coordinate system (X, Y, Z) is used to describe the structure of the camera module 1 of the present embodiment. A common orthogonal coordinate system (X, Y, Z) is used in the drawings to be described later.

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-rear direction when actually photographing is performed by the camera-mounted device. Light from a subject enters the prism 23 of the prism module 2 from the + side (plus side) in the Z direction, as indicated by the dashed line α (also referred to as the first optical axis) in FIG. The light incident on the prism 23 is bent at the optical path bending surface 231 of the prism 23, as indicated by the dashed line β (also referred to as the second optical axis) in FIG. The light is guided to the lens portion 33 of the lens module 3 arranged on the side). An image of the subject formed by the lens unit 33 (see FIG. 4) is captured by the imaging element module 4 arranged behind the lens module 3 .

The camera module 1 described above performs shake correction using a first shake correction device 24 (see FIG. 4) incorporated in the prism module 2 and a second shake correction device 37 (see FIG. 5) incorporated in the lens module 3. (OIS: Optical Image Stabilization). Further, the camera module 1 described above displaces the lens portion 33 in the X direction by the AF device 36 incorporated in the lens module 3 to perform autofocus.

[1.1.1 Camera Actuator]
The camera module 1 described above has camera actuators that drive the first shake correction device 24 , the second shake correction device 37 , and the AF device 36 . Such camera actuators include a first actuator 244 that drives the first shake correction device 24, a pair of second actuators 370a and 370b that drives the second shake correction device 37, and a pair of AF actuators that drive the AF device 36. It has actuators 364a, 364b.

In the case of this embodiment, in order to improve the degree of design freedom around the prism 23, which is the optical path bending member, the arrangement of the first actuator 244 is devised, and the second actuators 370a and 370b and the AF actuator in the lens module 3 are arranged. The layout of 364a and 364b is devised. The arrangement mode of each actuator will become clear from the description of the prism module 2 and the lens module 3, which will be described later.

The prism module 2, lens module 3, and imaging element module 4 included in the camera module 1 of the present embodiment will be described below with reference to FIGS. 1 to 19. FIG.

[1.1.2 Prism module]
The prism module 2 includes a first cover 21, a first base 22, a prism 23, and a first shake correction device 24, as shown in FIG.

[First cover]
As shown in FIGS. 4 and 5, the first cover 21 is made of, for example, synthetic resin or non-magnetic metal, and is a box-shaped member that is open on both sides in the Z direction and on the + side in the X direction. Light from the subject side can enter the inner space of the first cover 21 through the opening of the first cover 21 on the positive side in the Z direction. 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.

[1st Base]
The first base 22 supports a holder 241 (see FIGS. 4 and 8) of the first shake correcting device 24, which will be described later, so that it can swing about a first axis parallel to the Y direction. For this reason, the first base 22 has a first bearing portion 225a and a second bearing portion 225b (see FIG. 7) which are bearing portions.

In the case of the present embodiment, the first base 22 is a box-shaped member that is open on the positive side in the Z direction and the positive side in the X direction. A base first opening 220 (see FIG. 4) is formed in the Z-direction − side wall of the first base 22 (that is, the bottom wall 229). In FIG. 7, a first coil 244c and a first Hall element 244e of a first actuator 244, which will be described later, are arranged in the base first opening 220. As shown in FIG. Such a first base 22 is combined with the above-described first cover 21 to form a first housing space 223 (see FIG. 4) in which the first shake correction device 24 and prism 23 can be arranged.

In addition, the first base 22 has first side wall portions 224a and 224b (see FIG. 7) opposed in the Y direction at both ends in the Y direction. A first bearing portion 225a is provided on the first side wall portion 224a on the + side in the Y direction. On the other hand, a second bearing portion 225b is provided on the first side wall portion 224b on the negative side in the Y direction.

The first bearing portion 225a and the second bearing portion 225b have shapes symmetrical to each other in the Y direction. The structure of the first bearing portion 225a will be described below. The first bearing portion 225a has a substantially V-shaped notch shape that is open on the positive side in the Z direction when viewed in the Y direction. Both side surfaces in the X direction of the first bearing portion 225a are curved.

A first positioning protrusion 226, a second positioning protrusion 227, and a third positioning protrusion 228 (see FIG. 7) are formed on the end faces of the first side walls 224a and 224b on the positive side in the Z direction, respectively. there is The first positioning convex portion 226 and the second positioning convex portion 227 are engaged with a pair of pressing springs 242 (see FIG. 10), which will be described later, to prevent the pair of pressing springs 242 from shifting in the Y direction. On the other hand, the third positioning protrusion 228 engages with the pair of restraining springs 242 to position the pair of restraining springs 242 during assembly.

It should be noted that the structure of the bearing portion is not limited to the illustrated case. The bearing portion may be, for example, a bearing such as a rolling bearing or a sliding bearing.

[prism]
The prism 23 has a triangular prism shape, and is arranged in the first housing space 223 while being held by a holder 241 (see FIGS. 4 and 8) of the first shake correction device 24, which will be described later.

Such a prism 23 bends incident light from the object side (that is, the + side in the Z direction) with an optical path bending surface 231 (see FIG. 4), and directs the light in the direction of the lens section 33 (that is, the + side in the X direction) described later. guide light to

The optical path bending surface 231 is a surface parallel to the Y direction, and is arranged at a predetermined angle (45° in this embodiment) with respect to the first optical axis (that is, the Z direction) so that the light can be guided as described above. only slanted. Note that the structure of the prism 23 may be different from that of the present embodiment as long as the incident light from the object side can be guided to the lens portion 33 .

[First shake correction device]
The first shake correction device 24 oscillates the prism 23 about a first axis parallel to the Y direction, and performs shake correction in a rotation direction about the first axis. Such a first shake correction device 24 is arranged in the first housing space 223 (see FIG. 4).

The first shake correction device 24 (see FIGS. 2 and 4) includes a holder 241 , a pair of restraining springs 242 and a first actuator 244 .

In such a first shake correction device 24, the holder 241 is supported by the first base 22 so as to be able to swing. In this state, the holder 241 can swing around the first axis based on the driving force of the first actuator 244 . When the first actuator 244 is driven under the control of the controller (not shown), the holder 241 and the prism 23 swing around the first axis. As a result, shake in the direction of rotation about the first axis is corrected. Specific structures of the holder 241, the restraining spring 242, and the first actuator 244 will be described below.

[holder]
The holder 241 (see FIGS. 6 and 8) is made of synthetic resin, for example, and holds the prism 23 swingably with respect to the first base 22 .

The holder 241 has a mounting surface 241a (see FIGS. 6 and 8) that faces the optical path bending surface 231 of the prism 23 from the back side (Z direction − side). The mounting surface 241a has a surface parallel to the optical path bending surface 231, for example. Note that the mounting surface 241a is not limited to the structure of this embodiment, and may be, for example, a boss having a shape that enables positioning of the prism 23 .

The holder 241 has a pair of swing support portions 241c and 241d (see FIGS. 6 and 8) provided coaxially with each other. The central axis of the swing support portions 241c and 241d is the central axis of swing of the holder 241 (that is, the first axis).

The rocking support portions 241c and 241d are respectively provided on a pair of opposing wall portions 241f and 241g (see FIGS. 6 and 8) that sandwich the mounting surface 241a from both sides in the Y direction. Specifically, the swing support portion 241c is provided on the Y-direction + side surface of the opposing wall portion 241f. Such a swing support portion 241 c engages with the first bearing portion 225 a of the first base 22 .

On the other hand, the swing support portion 241d is provided on the Y-direction-side surface of the opposing wall portion 241g. Such a swing support portion 241d is engaged with the second bearing portion 225b of the first base 22. As shown in FIG.

The holder 241 also has pressed portions 241i and 241k (see FIGS. 2, 3, and 8). Such pressed portions 241i and 241k are respectively pressed in the Z direction - side (that is, toward the first base 22) by a pair of pressing springs 242, which will be described later. Thereby, the holder 241 is positioned in the Z direction.

In the case of this embodiment, the pressed portion 241i (see FIGS. 2 and 8) on the Y direction + side is two projections formed on the Y direction + side surface of the opposing wall portion 241f. Specifically, the pressed portions 241i are provided on both sides of the swing support portion 241c in the X direction on the Y direction + side surfaces of the opposing wall portion 241f.

On the other hand, the pressed portion 241k (see FIG. 3) on the Y direction − side is two protrusions formed on the Y direction − side surface of the opposing wall portion 241g. Specifically, the pressed portions 241k are provided on both sides in the X direction of the swing support portion 241d on the Y-direction--side surface of the opposing wall portion 241g.

The pressed portions 241i and 241k as described above each have a spherical outer peripheral surface. Specifically, each of the pressed portions 241i and 241k has a circular cross-sectional shape cut along a plane parallel to the ZX plane, the diameter of which decreases with increasing distance from the opposing wall portions 241f and 241g. Therefore, the contact between the outer peripheral surfaces of the pressed portions 241i and 241k and the pair of pressing springs 242 is point contact.

Further, by forming the outer peripheral surfaces of the pressed portions 241i and 241k into a spherical shape, the force with which the pair of pressing springs 242 press the pressed portions 241i and 241k includes a component toward the center of the holder 241 in the Y direction. . With such a configuration, the holder 241 is positioned in the Y direction and is less likely to rattle.

Furthermore, the holder 241 returns to the initial position based on the elastic force of the pair of restraining springs 242 when the electricity to the first actuator 244 described later is cut off. Note that the initial position of the holder 241 refers to a state in which the holder 241 is not swung by the first actuator 244 .

[Pressure spring]
A pair of restraining springs 242 (see FIGS. 9 and 10) are biasing mechanisms and fixed to the first base 22 . Each of these pressing springs 242 presses the holder 241 in the Z direction - (that is, in the direction toward the first base 22). Along with this, the pressing springs 242 press the holders 241 from both sides in the Y direction toward the center in the Y direction.

Specifically, each of the restraining springs 242 is fixed by a fixing means such as adhesion to a part of the pair of first side wall portions 224a and 224b of the first base 22 (specifically, the end surface on the positive side in the Z direction). ing. The fixing means may be, for example, fixing means using fastening parts (eg, rivets, bolts, bolt and nut sets).

As shown in FIG. 10, each of the pair of restraining springs 242 as described above is a leaf spring made of metal and has a fixed base portion 242a and a pair of pressing portions 242c.

The fixed base 242 a is a portion fixed to the first base 22 . A first spring-side hole 242e, a second spring-side hole 242g, and a third spring-side hole 242i are formed in the fixed base portion 242a.

The first positioning protrusion 226 and the second positioning protrusion 227 of the first base 22 are inserted through the first spring-side hole 242e and the second spring-side hole 242g (see FIGS. 2 and 3). This configuration prevents the pressing spring 242 from shifting in the Y direction due to the reaction force from the holder 241 .

The third positioning protrusion 228 of the first base 22 is inserted through the third spring-side hole 242i (see FIGS. 2 and 3). With this configuration, the positioning of the hold-down spring 242 when it is assembled to the first base 22 is achieved.

Each of the pair of pressing portions 242c extends in a direction approaching the holder 241 from two positions of the fixed base portion 242a. Each of the pair of pressing portions 242c presses the pressed portion 241i of the holder 241 in the negative direction in the Z direction. As a result, the swing support portion 241 c of the holder 241 is pressed against the first bearing portion 225 a of the first base 22 . Also, the pair of pressing portions 242c presses the pressed portion 241i of the holder 241 toward the center of the holder 241 in the Y direction.

[First actuator]
A first actuator 244 (see FIGS. 4 and 6) swings the holder 241 around the first axis. In the case of this embodiment, the first actuator 244 overlaps the optical path bending surface 231 of the prism 23 and the holder 241 in the Z direction (that is, the direction of the first optical axis). direction-side). In addition, in the case of this embodiment, the direction of the first optical axis corresponds to the first direction.

Specifically, the first actuator 244 comprises a first magnet 244a, a first coil 244c, and a first Hall element 244e. Such a first actuator 244 is of a so-called moving magnet type, in which the first magnet 244a is fixed to the holder 241, which is the movable side member, and the first coil 244c is fixed to the first base 22, which is the fixed side member. Actuator.

The first actuator 244 may be a so-called moving coil type actuator in which the first coil 244 c is fixed to the holder 241 and the first magnet 244 a is fixed to the first base 22 . The structure of each part that constitutes such a first actuator 244 is substantially the same as a conventionally known structure, and detailed description thereof will be omitted. The arrangement of each part that constitutes the first actuator 244 will be described below.

The first magnet 244a is fixed to the back surface of the holder 241 (that is, the surface on the Z direction - side). In the case of this embodiment, the first magnet 244a is magnetized in the Z direction and has two magnetic poles on one side. The first coil 244c and the first Hall element 244e are fixed to the surface (that is, the positive side in the Z direction) of a flexible printed circuit board (hereinafter referred to as FPC) 25 fixed to the back surface of the first base 22. there is

The first coil 244c and the first Hall element 244e are arranged in the base first opening 220 of the first base 22 (see FIGS. 4 and 6). In addition, in the case of this embodiment, the first coil 244c is an oval so-called air-core coil. The first Hall element 244e is arranged radially inside the first coil 244c.

In the case of the first actuator 244 having the configuration as described above, when a current flows through the first coil 244c via the FPC 25 under the control of the control unit (not shown) for camera shake correction, the first magnet 244a is moved in the X direction. A Lorentz force is generated that displaces Since the first magnet 244a is fixed to the holder 241, a moment about the first axis acts on the holder 241 based on the Lorentz force. As a result, the holder 241 swings around the first axis. By controlling the direction of the current flowing through the first coil 244c, the displacement direction of the holder 241 is switched.

[1.1.3 Lens module]
The lens module 3 includes a second cover 31, a second base 32, a lens section 33, an AF device 36, a second shake correction device 37, and a reference member 38, as shown in FIGS.

[Second cover]
The second cover 31 is made of synthetic resin or non-magnetic metal, for example, and is a box-shaped member that is open on both sides in the X direction and on the negative side in the Z direction (that is, on the back side). The second cover 31 as described above is combined with the second base 32, which will be described later, from the + side in the Z direction.

[Second Base]
The second base 32 (see FIGS. 14 and 15) is combined with the above-described second cover 31 to provide a second accommodation space 320 ( 11) is formed.

The second base 32 has a bottom surface portion 321 and a pair of second side wall portions 322a and 322b. The bottom portion 321 has a synthetic resin base and a metal reinforcing plate 323 insert-molded into the base. Such a reinforcing plate 323 contributes to increasing the rigidity and reducing the thickness of the bottom portion 321 .

The reinforcing plate 323 of the second base 32 is arranged so as to overlap the lens guide 361 on the Z direction - side of the lens guide 361 to be described later. Specifically, the range in which the lens guide 361 can move during autofocus operation (that is, the range in which it can move in the X direction) and the range in which it can move in the case of image stabilization operation (that is, the range in which it can move in the Y direction). possible range), the lens guide 361 exists on the positive side of the reinforcing plate 323 in the Z direction. Therefore, the surface of the reinforcing plate 323 (that is, the surface on the positive side in the Z direction) is always covered with the lens guide 361 and is not exposed. This prevents the light reflected by the reinforcement plate 323 from entering the lens portion 33 and, in turn, the image sensor of the image sensor module 4 described later.

Bottom through-holes 321a and 321b (see FIG. 15) are formed on both sides of the reinforcing plate 323 in the bottom portion 321 in the Y direction. AF coils 366a and 366b of a pair of AF actuators 364a and 364b, which will be described later, are arranged in the bottom through holes 321a and 321b (see FIGS. 5 and 11).

The second side wall portions 322a and 322b each extend from both ends of the bottom surface portion 321 in the Y direction to the positive side in the Z direction. The second side wall portions 322a and 322b have coil mounting portions 322d and 322e, respectively. Second coils 372a and 372b of a second vibration correction device 37, which will be described later, are mounted on the coil mounting portions 322d and 322e, respectively (see FIGS. 5 and 11).

A pair of magnet spaces 322g and 322h (see FIG. 11) are formed between the pair of coil mounting portions 322d and 322e and the bottom portion 321. As shown in FIG. AF magnets 365a and 365b of a pair of AF actuators 364a and 364b, which will be described later, are arranged in the magnet spaces 322g and 322h, respectively.

In the case of this embodiment, the bottom through holes 321a, 321b and the coil mounting portions 322d, 322e overlap with each other with a predetermined gap in the Z direction. Therefore, the AF coils 366a and 366b arranged in the bottom through holes 321a and 321b and the second coils 372a and 372b mounted on the coil mounting portions 322d and 322e are separated from each other by a predetermined distance in the Z direction. They are open and overlapped.

In addition, the second side wall portion 322a has spring placement portions 324a and 324c (see FIG. 2) for placing springs 362a and 362c, which will be described later, on 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 322b has spring placement portions 324b and 324d (see FIG. 3) for arranging springs 362b and 362d (described later) at both ends in the X direction on the Y direction negative side. Gel-like damping members covering the springs 362a to 362d may be arranged in the spring arrangement portions 324a to 324d, respectively.

[Lens part]
The lens portion 33 is arranged in the second housing space 320 while being held by a lens guide 361 which will be described later. Such a lens portion 33 has a cylindrical lens barrel and one or more lenses held by the lens barrel. As an example, the lens unit 33 has a telephoto lens group of, for example, an optical 3x or higher fixed between the end of the lens barrel on the negative side in the X direction and the end on the positive side in the X direction of the lens barrel. Note that the structure of the lens portion 33 is not limited to the structure described above.

[AF device]
The AF device 36 (see FIG. 5) displaces the lens portion 33 in the X direction for the purpose of autofocus. Specifically, the AF device 36 has a lens guide 361, a plurality of (four in this embodiment) springs 362a to 362d, an FPC 363, and a pair of AF actuators 364a and 364b.

[Lens guide]
A lens guide 361 (see FIGS. 11 and 16) has an accommodation space capable of holding a lens barrel. Such a lens guide 361 is arranged in the above-described second housing space 320 so as to be displaceable in the X direction (that is, the direction of the second optical axis) and the Y direction.

The lens guide 361 has a pair of first magnet holders 361a and 361b (see FIG. 11) for holding AF magnets 365a and 365b of a pair of AF actuators 364a and 364b to be described later. In this embodiment, the pair of first magnet holding portions 361a and 361b are arranged in the magnet spaces 322g and 322h of the second base 32, respectively.

The lens guide 361 has a pair of second magnet holders 368a and 368b (see FIG. 11) that hold second magnets 371a and 371b of a pair of second actuators 370a and 370b, which will be described later. In the case of this embodiment, the pair of second magnet holding portions 368a and 368b respectively overlap the coil mounting portions 322d and 322e of the second base 32 with a predetermined gap in the Z direction.

[spring]
A plurality of (four in this embodiment) springs 362a to 362d (see FIGS. 12, 13 and 17) elastically support the lens guide 361 to the second base 32. As shown in FIG. In this state, the lens portion 33 can be displaced in the X direction and the Y direction with respect to the second base 32 .

In the case of this embodiment, the spring 362a supports the end of the lens guide 361 on the positive side in the X direction and the positive side in the Y direction on the second base 32 (see FIG. 12). The spring 362b supports the end of the lens guide 361 on the positive side in the X direction and the negative side in the Y direction on the second base 32 (see FIG. 13). The spring 362c supports the end of the lens guide 361 on the negative side in the X direction and the positive side in the Y direction on the second base 32 (see FIG. 12). Further, the spring 362d supports the end of the lens guide 361 on the X direction - side and the Y direction - side on the second base 32 (see FIG. 13).

Each of the springs 362a-362d has a first fixed portion 362f, a second fixed portion 362g, and an elastic deformation portion 362h (see FIG. 17). 17 shows the springs 362a-362d as arranged in the assembled state.

The first fixed portion 362f is fixed to the lens guide 361, which is a movable side member. The second fixed portion 362g is fixed to the second base 32, which is a fixed side member. The elastic deformation portion 362h connects the first fixing portion 362f and the second fixing portion 362g. The elastically deformable portion 362h is made of, for example, a linear member that is bent into a meandering shape.

In addition, in the case of the present embodiment, the elastic deformation portion 362h has directionality in the X direction. The springs 362a to 362d described above are arranged such that the directionality of the elastic deformation portion 362h in the X direction is the same.

In the case of this embodiment, as shown in FIG. 17, the line segment connecting the center of the spring 362a and the center of the spring 362d arranged at the diagonal position of the lens guide 361 when viewed from the Z direction is defined as _L1 . Assuming that the line segment connecting the center of 362b and the center of spring 362c is _L2 , the intersection of _L1 and _L2 (also referred to as the central position of distributed arrangement) is the center of gravity G of the movable part at the reference position. coincides or nearly coincides with In the present embodiment, the movable portion refers to the lens guide 361 and each member fixed to the lens guide 361 and displaceable together with the lens guide 361 . Specifically, in the case of this embodiment, the movable portion includes the lens guide 361, the lens portion 33, the AF magnets 365a and 365b of the pair of AF actuators 364a and 364b, and the second actuators of the pair of second actuators 370a and 370b to be described later. It includes two magnets 371a and 371b and shield plates 6a and 6b.

The center of each spring is, for example, the center position in the Z direction and the center position in the X direction of each spring. Further, the reference position of the lens guide 361 means a state in which the lens guide 361 is not displaced in the X direction by the autofocus function, and is not displaced in the Y direction by the second shake correction device 37, which will be described later. With such a configuration, the resonance of the lens guide 361 around the straight line _L3 passing through the center of gravity of the movable portion and parallel to the Z direction is reduced.

The springs 362a to 362d 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. 17), the pair of springs 362a and 362b on the + side in the X direction They are arranged symmetrically with respect to _L4 and at two positions separated by a predetermined distance from the center of gravity G to the + side in the X direction (right side in FIG. 17). On the other hand, the pair of springs 362c and 362d on the X direction − side are arranged at two positions symmetrical with respect to the straight line _L4 and separated from the center of gravity G by the predetermined distance on the X direction − side (left side in FIG. 17). be. As a result, the intersection of the straight lines _L1 and _L2 coincides with the center of gravity G. As shown in FIG.

[FPC]
The FPC 363 (see FIGS. 11 and 18) is a flexible printed circuit board and fixed to the second base 32 . Such an FPC 363 supplies electric power to, for example, second actuators 370a and 370b of the AF device 36 and the second shake correction device 37, which will be described later.

Specifically, the FPC 363 is a continuous flexible printed circuit board and has a pair of first coil fixing portions 363a, 363b and a pair of second coil fixing portions 363d, 363e.

An AF coil 366a (see FIG. 11) of the AF device 36 is fixed to the first coil fixing portion 363a via the substrate 7a. In this state, the first coil fixing portion 363a and the AF coil 366a are arranged in the bottom through-hole 321a of the second base 32 .

On the other hand, an AF coil 366b (see FIG. 11) of the AF device 36 is fixed to the first coil fixing portion 363b via the substrate 7b. In this state, the first coil fixing portion 363b and the AF coil 366b are arranged in the bottom through-hole 321b of the second base 32. As shown in FIG. The substrates 7a and 7b described above are fixed to the first coil fixing portions 363a and 363b by soldering. In such a structure, when FPC reinforcing plates are provided on the first coil fixing portions 363a and 363b, the above-described substrates 7a and 7b are omitted and the AF coils 366a and 366b are directly provided on the FPC 363. can also In the case of such a structure, since the substrates 7a and 7b can be omitted, the soldering between the substrates 7a and 7b and the first coil fixing portions 363a and 363b is also unnecessary.

The second coil fixing portions 363d and 363e respectively overlap the first coil fixing portions 363a and 363b with a predetermined gap in the Z direction. Second coils 372a and 372b of the second vibration correction device 37, which will be described later, are fixed to the surfaces of the second coil fixing portions 363d and 363e, respectively (see FIG. 11). In this state, the second coil fixing portions 363d and 363e are mounted on the surfaces of the coil mounting portions 322d and 322e of the second base 32, respectively.

[AF actuator]
A pair of AF actuators 364a and 364b (see FIG. 11) are third actuators for autofocus. The Y-direction + side AF actuator 364a has an AF magnet 365a and an AF coil 366a. On the other hand, the AF actuator 364b on the Y-direction − side has an AF magnet 365b, an AF coil 366b, and an AF hall element 367. FIG.

In the AF actuators 364a and 364b, the AF magnets 365a and 365b are fixed to the lens guide 361, which is a movable member, and the AF coils 366a and 366b are attached to the second base 32, which is a fixed member. It is a moving magnet type actuator fixed via

Note that the AF actuators 364a and 364b may be moving coil type actuators. The structure of each part that constitutes such AF actuators 364a and 364b is substantially the same as a conventionally known structure, so detailed description thereof will be omitted. The arrangement of each part constituting the AF actuators 364a and 364b will be described below.

The AF magnets 365a and 365b are held by the first magnet holding portions 361a and 361b of the lens guide 361, respectively. In this state, the AF magnets 365a and 365b are arranged in the magnet spaces 322g and 322h (see FIG. 11) of the second base 32, respectively. In the case of this embodiment, the AF magnets 365a and 365b are each magnetized in the Z direction and have two magnetic poles on one side.

The AF coils 366a and 366b are oval so-called air-core coils. The AF coils 366a and 366b are fixed to the first coil fixing portions 363a and 363b of the FPC 363 via the substrates 7a and 7b with their long axes aligned in the Y direction. The AF Hall element 367 is arranged radially inside the AF coil 366b.

In the case of the AF actuators 364a and 364b having the configuration described above, when a current flows through the AF coils 366a and 366b via the FPC 363 under the control of the autofocus control unit (not shown), the AF magnets 365a and 366b A Lorentz force is generated that displaces 365b in the X direction. Since the AF magnets 365a and 365b are fixed to the lens guide 361, the lens guide 361 is displaced in the X direction (also referred to as the third direction) based on the Lorentz force. The displacement direction of the lens guide 361 is switched by controlling the direction of current flowing through the AF coils 366a and 366b. Autofocus is performed in this way.

In the case of this embodiment, the resonance of the lens guide 361 around the straight line L ₃ (see FIG. 17) is reduced by devising the arrangement of the springs 362a to 362d and the lens guide 361 as described above. However, if the resonance cannot be completely eliminated, the driving force of the AF actuator 364a and the driving force of the AF actuator 364b are different to swing the lens guide 361 in the direction of canceling out the resonance. good too. It should be noted that the driving forces of the AF actuators 364a and 364b can be differentiated by making different currents flow through the AF actuators 364a and 364b.

[Second shake correction device]
The second shake correction device 37 (see FIG. 5) performs shake correction in the Y direction by displacing the lens unit 33 in the Y direction (also referred to as the second direction). Such a second vibration correction device 37 is arranged in the above-described second accommodation space 320 (see FIG. 4).

The second shake correction device 37 has the lens guide 361 described above, the plurality of springs 362a to 362d described above, the FPC 363 described above, and a pair of second actuators 370a and 370b. Lens guides 361, 362a to 362d, and FPC 363 are common to AF device .

The second actuator 370a (see FIG. 11) on the positive side in the Y direction overlaps the above-described AF actuator 364a with a predetermined gap in the Z direction (also referred to as the first direction). . Such a second actuator 370a has a second magnet 371a and a second coil 372a.

On the other hand, the second actuator 370b on the negative side in the Y direction is arranged to overlap the above-mentioned AF actuator 364b with a predetermined gap in the Z direction (also referred to as the first direction). Such a second actuator 370a has a second magnet 371b, a second coil 372b, and a second Hall element 373. As shown in FIG.

By arranging the second actuators 370a, 370b and the AF actuators 364a, 364b as described above, the center of the driving force of the second actuators 370a, 370b coincides with the center of the driving force of the AF actuators 364a, 364b. This configuration makes it difficult for the lens guide 361 to tilt (that is, swing about an axis parallel to the X or Y direction) during autofocus and shake correction.

In the second actuators 370a and 370b as described above, the second magnets 371a and 371b are fixed to the lens guide 361, which is a movable member, and the second coils 372a and 372b are attached to the second base 32, which is a fixed member. It is a moving magnet type actuator fixed via the FPC 363 . However, the second actuators 370a and 370b may be moving coil type actuators.

The structure of each part that constitutes the second actuators 370a and 370b is substantially the same as a conventionally known structure, and detailed description thereof will be omitted. The arrangement of each part constituting the second actuators 370a and 370b will be described below.

The second magnets 371a and 371b are held by second magnet holding portions 368a and 368b of the lens guide 361, respectively. In the case of this embodiment, the second magnets 371a and 371b are each magnetized in the Z direction and have two magnetic poles on one side.

Each of the second coils 372a and 372b is an oval so-called air-core coil. The second coils 372a and 372b are fixed to the second coil fixing portions 363d and 363e of the FPC 363, respectively, with their major axes aligned in the X direction.

In this state, the second coils 372a and 372b respectively overlap the second magnets 371a and 371b with a predetermined gap in the Z direction. The second Hall element 373 is fixed to the surface of the second coil fixing portion 363e of the FPC 363 and to the radially outer side of the second coil 372b. The second Hall element 373 may be arranged radially inside the second coil 372b.

In the case of the second actuators 370a and 370b having the configuration described above, under the control of a control unit (not shown) for camera shake correction, when current flows through the second coils 372a and 372b via the FPC 363, the second magnets A Lorentz force is generated that displaces 371a and 371b in the Y direction. Since the second magnets 371a and 371b are respectively fixed to the lens guide 361, the lens guide 361 is displaced in the Y direction based on the Lorentz force. The displacement direction of the lens guide 361 is switched by controlling the direction of the current flowing through the second coils 372a and 372b.

In the case of this embodiment, in order to prevent crosstalk between the second actuators 370a and 370b and the AF actuators 364a and 364b, the space between the second magnets 371a and 371b and the AF magnets 365a and 365b in the Z direction is Shield plates 6a and 6b made of magnetic metal are arranged in the portion.

[Reference member]
The reference member 38 (see FIGS. 12 and 19) is a plate-like member fixed to the end of the second base 32 on the + side in the X direction. The X-direction positive side surface of the reference member 38 serves as the X-direction reference surface of the imaging element module 4, which will be described later. A through hole 38 a is formed in the central portion of the reference member 38 to guide the light that has passed through the lens portion 33 to the imaging element module 4 .

A pair of stopper portions 380a and 380b are provided on the side surface of the reference member 38 on the negative side in the X direction to limit the displacement of the lens portion 33 on the positive side in the X direction during autofocusing within a predetermined range. As shown in FIG. 5, the end surfaces of the stopper portions 380a and 380b on the X-direction - side (hereinafter simply referred to as "stopper surfaces") are arranged in the lens guide 361 when the lens guide 361 is at the reference position, as shown in FIG. is opposed to a part of at a predetermined interval in the X direction.

In the case of this embodiment, each of the stopper surfaces faces the X-direction + side end surface (hereinafter referred to as "first stopper-receiving surface") of the first magnet holding portions 361a and 361b of the lens guide 361 in the X direction. are doing. When the lens guide 361 is displaced to the + side in the X direction by more than the predetermined distance, the first surface to be stopped hits the stopper surface. In this manner, the displacement of the lens guide 361 in the positive direction in the Y direction is restricted within a predetermined range.

On the other hand, the lens guide 361 has an end face (hereinafter referred to as a “second stopped surface”) on the X direction − side of the first magnet holding portions 361a and 361b of the lens guide 361, and the second stopped surface and the X direction. A portion of the second base 32 (also referred to as a second stopper surface) facing the second base 32 restricts the negative displacement in the Y direction within a predetermined range.

Further, the displacement of the lens guide 361 in the Y direction is restricted within a predetermined range by the Y direction end faces of the first magnet holding portions 361a and 361b and the pair of second side wall portions 322a and 322b of the second base 32. there is

Further, the displacement of the lens guide 361 in the +Z direction is restricted within a predetermined range by the end surface of the lens guide 361 on the +Z direction side and the second cover 31 . Further, the displacement of the lens guide 361 in the Z direction − side is restricted within a predetermined range by the Z direction − side end surface of the lens guide 361 and the bottom surface portion 321 of the second base 32 .

A spring space 383 (see FIGS. 2 and 3) in which the spring 362b can be arranged is formed on the + side of the stopper portion 380a in the Y direction. On the other hand, a spring space 383 in which the spring 362a can be arranged is formed on the - side of the stopper portion 380b in the Y direction.

Gel-like damping members covering the springs 362b and 362a may be arranged in the spring spaces 383, respectively.

[1.1.4 Imaging device module]
The imaging element module 4 is arranged on the + side in the X direction with respect to the lens unit 33 . The imaging element module 4 includes an imaging element such as a CCD (charge-coupled device) type image sensor, a CMOS (complementary metal oxide semiconductor) type image sensor, or the like. The imaging device of the imaging device module 4 captures the subject image formed by the lens unit 33 and outputs an electrical signal corresponding to the subject image. A printed wiring board (not shown) is electrically connected to a board (not shown) of the imaging element module 4, and power is supplied to the imaging element module 4 and an object imaged by the imaging element module 4 is transmitted through the printed wiring board. An electrical signal of the image is output. Such an image sensor module 4 can adopt a conventionally known structure.

[1.2 Actions and effects of the present embodiment]
In the case of the camera actuator and camera module 1 of the present embodiment having the above configurations, the prism module 2 is provided with only the first actuator 244 of the first shake correction device 24 . Moreover, the first actuator 244 is arranged behind the prism 23 (that is, on the negative side in the Z direction) so as to overlap with the prism 23 in the Z direction (that is, in the direction of the first optical axis). Accordingly, camera actuators are not arranged around the prism 23 in the X direction and the Y direction. Therefore, it is possible to improve the degree of freedom in designing the circumference of the prism 23 in the X direction and the circumference in the Y direction. Such an improvement in the degree of freedom in design contributes to miniaturization of the prism module 2 in the X and Y directions.

In the lens module 3, a pair of second actuators 370a and 370b, which are driving devices for the second shake correction device 37, overlap the pair of AF actuators 364a and 364b with a predetermined gap in the Z direction. placed in a state. Such an arrangement contributes to miniaturization of the lens module 3 in the X and Y directions.

Further, conventionally, for example, as shown in FIG. 22, there is known a camera-equipped device (smartphone M in the illustrated case) equipped with a dual camera including a wide-angle camera OC1 and a telephoto camera OC2. In the case of such a smart phone M, the wide-angle camera OC1 is arranged on the X direction - side (left side in FIG. 22B) of the telephoto camera OC2. Specifically, when the camera module 1 of the present embodiment shown in FIGS. ). The smartphone M also has a control unit (not shown) that controls the wide-angle camera OC1 and the telephoto camera OC2. Note that the wide-angle camera OC1 may be arranged on the + side in the Y direction (front side in FIG. 4) of the camera module 1 in some cases.

It is known that in such a structure, so-called crosstalk occurs when the camera actuator of the telephoto camera OC2 and the camera actuator of the wide-angle camera OC1 are close to each other. 1 and 4, the first actuator of the telephoto camera OC2 is arranged on the - side of the prism 23 in the X direction.

On the other hand, in the case of this embodiment, the first actuator 244 of the camera module 1 is arranged on the Z-direction - side of the prism 23 far from the wide-angle camera OC1. Therefore, when applied to the dual camera described above, the camera module 1 according to the present embodiment can suppress the occurrence of crosstalk with the actuator of the wide-angle camera OC1.

If the camera module 1 of the present embodiment is adopted as the telephoto camera OC2 of the smartphone M as described above, the first actuator 244 is arranged at a position far from the actuator of the wide-angle camera OC1. crosstalk is less likely to occur.

[1.3 Supplement]
In this embodiment, the second actuators 370a and 370b of the second shake correction device 37 are arranged on the + side in the Z direction, and the AF actuators 364a and 364b of the AF device 36 are arranged on the - side in the Z direction. The second actuators 370a, 370b of the device 37 may be arranged on the negative side in the Z direction, and the AF actuators 364a, 364b of the AF device 36 may be arranged on the positive side in the Z direction.

Note that the camera module 1 of this embodiment includes both the prism module 2 and the lens module 3 described above. However, the prism module 2 and the lens module 3 described above do not necessarily have to be implemented at the same time. That is, it is also possible to implement a camera module comprising one of the prism module 2 described above and the lens module 3 described above. Further, a part of the configuration may be extracted from the prism module 2 or the lens module 3 described above.

[2. Embodiment 2]
20 and 21 are perspective views showing a camera module 1a according to Embodiment 2 of the present invention. The camera module 1a of this embodiment differs from the above-described first embodiment in the structure of the biasing mechanism that presses the holder 241 of the prism module 2a to the Z direction - side (that is, the direction toward the first base 22). Other structures of the camera module 1a are the same as those of the first embodiment described above. For this reason, the structure of the camera module 1a according to the present embodiment will be described below, centering on the structure of portions that differ from the first embodiment described above.

The prism module 2a of the camera module 1a does not have the holding spring 242 (see FIGS. 9 and 10) that the prism module 2 of the first embodiment has. Instead, the prism module 2a has a rectangular ring-shaped yoke 26 made of magnetic metal fixed to the rear surface of the FPC 25 fixed to the rear surface of the first base 22 (that is, the Z direction - side surface). Note that the shape of the yoke 26 is not limited to that of this embodiment.

In the case of the present embodiment, the holder 241 is moved based on the magnetic forces in mutually attracting directions generated between the first magnet 244a fixed to the back surface of the holder 241 (that is, the Z-direction negative surface) and the yoke 26. , is pressed against the first base 22 . Thereby, the holder 241 is positioned in the Z direction.

In the case of the present embodiment, when the power supply to the first actuator 244 is cut off, the holder 241 returns to the initial position based on the magnetic force generated between the first magnet 244a and the yoke 26 in the mutually attracting direction. do. Other structures and actions/effects are the same as those of the first embodiment.

[3. Embodiment 3]
A camera module according to Embodiment 3 of the present invention will be described with reference to FIGS. In this embodiment, the structure of the prism module 2b is different from that of the first embodiment. Specifically, the structure of a portion that swingably supports a holder 241A with respect to a first base 22a, which will be described later, differs from that of the first embodiment.

On the other hand, the structure of the lens module is the same as that of the first embodiment. The structure of the camera module according to the present embodiment will be described below, focusing on the structure of portions that differ from the first embodiment.

[3.1 Prism module]
The prism module 2b of the camera module according to this embodiment includes a first cover 21, a first base 22a, a prism 23, and a first shake correction device 24a. The structures of the first cover 21 and the prism 23 are the same as those of the first embodiment described above.

[1st Base]
The first base 22a, like the first base 22 of Embodiment 1 described above, is a box-shaped member that is open on the positive side in the Z direction and the positive side in the X direction. A base first opening 220 (see FIG. 25) is formed in the bottom wall portion 229 on the Z-direction − side of the first base 22a.

In the case of this embodiment, a first coil 244c and a first Hall element 244e of a first actuator 244A, which will be described later, and a spacer 246, which will be described later, are arranged in the first opening 220 of the base.

Further, the first base 22a supports a holder 241A (see FIGS. 23, 28, and 29) of the first vibration correction device 24a, which will be described later, so as to be able to swing around a first axis parallel to the Y direction. For this reason, the first base 22a has a first receiving portion 225c and a second receiving portion 225d (see FIGS. 26 and 31) for holding a swing guide member 245, which will be described later.

The first receiving portion 225c is provided on the first side wall portion 224a on the Y direction + side of the first base 22a. On the other hand, the second receiving portion 225d is provided on the first side wall portion 224b on the negative side in the Y direction of the first base 22a.

Such first receiving portion 225c and second receiving portion 225d have shapes symmetrical to each other in the Y direction. Specifically, each of the first receiving portion 225c and the second receiving portion 225d has a substantially V-shaped notch shape that is open on the positive side in the Z direction when viewed in the Y direction.

Also, the first receiving portion 225c and the second receiving portion 225d are closed by the stopper surfaces 225e and 225f at the center side in the Y direction of the first base 22a. On the other hand, the first receiving portion 225c and the second receiving portion 225d are each open in the Y direction (also referred to as the width direction) outside of the first base 22a.

A first positioning convex portion 226a and a second positioning convex portion 227a (see FIGS. 26 and 27) are provided on the end faces of the first side wall portions 224a and 224b on the positive side in the Z direction, respectively. The first positioning protrusion 226a and the second positioning protrusion 227a engage with a pair of swing support springs 243 (see FIGS. 27 and 30) to position the pair of swing support springs 243, which will be described later.

[First shake correction device]
The first shake correction device 24a oscillates the prism 23 about the first axis parallel to the Y direction, similarly to the first embodiment described above, to correct shake in the rotation direction about the first axis. conduct. Such a first shake correction device 24a is arranged in the first housing space 223 (see FIG. 25).

The first shake correction device 24a includes a pair of swing guide members 245, a pair of swing support springs 243, a spacer 246, a holder 241A, and a first actuator 244A.

In the case of this embodiment as well, in the first shake correction device 24a, the holder 241A is swingably supported by the first base 22a. In this state, the holder 241A swings around the first axis based on the driving force of the first actuator 244A. When the first actuator 244A is driven under the control of the controller (not shown), the holder 241A and the prism 23 swing around the first axis. As a result, shake in the direction of rotation about the first axis is corrected. The specific structure of each member included in the first shake correction device 24a will be described below.

[Swing guide member]
The pair of swing guide members 245 are, for example, spherical bodies made of ceramic, metal, or synthetic resin. One of the pair of swing guide members 245 (that is, the Y-direction + side) swing guide member 245 is arranged on the first receiving portion 225c of the first base 22a. On the other hand, the swinging guide member 245 on the other side (that is, the negative side in the Y direction) is arranged on the second receiving portion 225d of the first base 22a.

In this state, one swing guide member 245 contacts the first receiving portion 225c and the other swing guide member 245 contacts the second receiving portion 225d at two points.

In addition, half portions of the pair of swing guide members 245 on the +Z direction side are swing guide surfaces 245a (also referred to as swing guide portions). The swing guide surface 245a protrudes to the Z direction + side more than the first receiving portion 225c and the second receiving portion 225d.

The positive Z-side end of each swing guide surface 245a is the portion other than the first positioning convex portion 226a and the second positioning convex portion 227a on the positive Z-side end surfaces of the first side wall portions 224a and 224b. is located on the + side in the Z direction.

Note that the swing guide member 245 is not limited to a sphere, and may be, for example, a hemisphere, a cylinder, or a semi-cylinder. Also, the swing guide member 245 may be integrated with the first base 22a. That is, the swing guide member may be configured by part of the first base 22a.

[Swing support spring]
A pair of swing support springs 243 supports a holder 241A, which will be described later, swingably with respect to the first base 22a. Each of the pair of rocking support springs 243 is a plate spring made of metal and arranged on the Z-direction + side of the pair of rocking guide members 245 .

One of the pair of swing support springs 243 (that is, the positive side in the Y direction) will be described below. The swing support spring 243 on the other side (that is, the negative side in the Y direction) is symmetrical to the swing support spring 243 on the one side in the Y direction.

One rocking support spring 243 has a pair of first locking portions 243a and 243b, a second locking portion 243c, a torsion allowance portion 243g, and a spring-side guide surface 243h, as shown in FIGS.

Of the pair of first locking portions 243 a and 243 b , the first locking portion 243 a on one side (that is, on the + side in the X direction) is provided at the end portion on the + side in the X direction of one swing support spring 243 . Such one first locking portion 243a has a first through hole 243d.

On the other hand, the first locking portion 243b on the other side (that is, the negative side in the X direction) is provided at the end of the swing support spring 243 on one side on the negative side in the X direction. Such other first locking portion 243b has a first through hole 243e. A pair of first locking portions 243a and 243b are connected to each other by a connecting portion 243i extending in the X direction.

The Z-direction negative side surfaces of the pair of first locking portions 243a and 243b are adhesively fixed to the Z-direction + side end surface of the first side wall portion 224a of the first base 22a. In this state, the first positioning protrusions 226a and 227a of the first base 22a are inserted through the first through holes 243d and 243e, respectively.

In the case of the other (Y direction − side) swing support spring 243, the Z direction − side surface of the pair of first locking portions 243a and 243b is the Z direction of the first side wall portion 224b of the first base 22a. It is adhesively fixed to the end face on the + side.

The second locking portion 243c is provided between the first locking portions 243a and 243b in the X direction with a gap in the X direction therebetween. The second locking portion 243c has a pair of second through holes 243f.

The Z direction + side surface of the second locking portion 243c is adhesively fixed to a spring bearing surface 241s (see FIG. 32) of the holder 241A, which will be described later. In this state, the pair of holder-side positioning protrusions 241u (see FIG. 32) of the holder 241A are respectively inserted into the pair of second through holes 243f. In the case of the swing support spring 243 on the other side (the negative side in the Y direction), the surface of the second locking portion 243c on the positive side in the Z direction is adhesively fixed to the spring bearing surface 241t of the holder 241A.

The twist-permitting portion 243g is a plate-like member extending in the Y direction, and connects the X-direction intermediate portion of the connecting portion 243i and the second locking portion 243c. Such a twist allowing portion 243g allows twisting of the second locking portion 243c with respect to the first locking portions 243a and 243b by being twisted.

Further, the torsion allowing portion 243g is elastically deformed to allow relative displacement in the Z direction between the first locking portions 243a and 243b and the second locking portion 243c.

The spring-side guide surface 243h is configured by the back surface (that is, the surface on the Z-direction − side) of the second locking portion 243c. Such a spring-side guide surface 243 h abuts on the swing guide surface 245 a of the swing guide member 245 .

The pair of swing support springs 243 is a plate-shaped member that is flat overall in a free state (also referred to as a non-assembled state). On the other hand, in the assembled state, the second locking portion 243c of the pair of rocking support springs 243 is positioned on the Z direction + side relative to the first locking portions 243a and 243b based on the elastic deformation of the torsion allowance portion 243g. (See FIG. 31).

Specifically, in the assembled state, the torsion permitting portion 243g elastically deforms toward the Z direction + side toward the second locking portion 243c. Based on such elastic deformation, the spring-side guide surfaces 243h of the pair of rocking support springs 243 urge the rocking guide member 245 toward the Z direction - side.

[Spacer]
The spacer 246 is arranged in a bottom groove 229a (see FIGS. 25 and 29) formed in the Z direction − side surface (that is, the bottom surface) of the bottom wall portion 229 of the first base 22a. Such a spacer 246 prevents collision in the Z direction between the first magnet 244f and the first coil 244c.

Specifically, the spacer 246 is a plate-like member and has a spacer-side through hole 246a in which a first coil 244c of a first actuator 244A, which will be described later, can be arranged.

A portion of the spacer 246 is arranged between a first coil 244c of a first actuator 244A, which will be described later, and the base first opening 220 (see FIGS. 25 and 26).

The Z direction + side surface (also referred to as the collision prevention surface) of the portion (also referred to as the collision prevention portion) disposed around the first coil 244c in the spacer 246 is the Z direction + side surface of the first coil 244c. , located on the + side in the Z direction (see FIG. 25).

The collision prevention surface faces collision prevention projections 241m, 241n, and 241p (see FIGS. 25 and 32) of the holder 241A, which will be described later, in the Z direction.

In this state, gaps in the Z direction between the anti-collision surfaces and the anti-collision protrusions 241m, 241n, and 241p exist between the first magnet 244f and the first coil 244c of the first actuator 244A. Smaller than the gap in the Z direction.

Therefore, even if the first magnet 244f is displaced to the Z direction - side along with the holder 241A, which will be described later, the anti-collision protrusions 241m, 241n, and 241p are not in contact with the spacer 246 before the first magnet 244f comes into contact with the first coil 244c. abut. This prevents collision between the first magnet 244f and the first coil 244c. Note that the spacer 246 may be omitted. Although illustration is omitted, when the spacer 246 is omitted, a part of the surface (that is, surface) on the Z direction + side of the bottom wall portion 229 of the first base 22a (also referred to as a collision prevention surface) is It is positioned on the Z direction + side of the surface of the one coil 244c on the Z direction + side. In this case, the positions of the collision prevention projections 241m, 241n, and 241p (see FIGS. 25 and 32) of the holder 241A, which will be described later, are adjusted so that the collision prevention surface and the collision prevention projections 241m, 241n, and 241p are aligned in the Z direction. Oppose. This prevents contact between the first magnet 244f and the first coil 244c.

[holder]
The holder 241A (see FIGS. 29 and 32) is made of synthetic resin, for example, and holds the prism 23 in a swingable state with respect to the first base 22a.

The holder 241A includes a mounting surface 241a, a pair of opposing wall portions 241f and 241g, a plurality of anti-collision protrusions 241m, 241n and 241p, and a pair of projecting portions 241q and 241r. The structures of the mounting surface 241a and the pair of opposing walls 241f are substantially the same as those of the holder 241 of the first embodiment described above.

The plurality of anti-collision protrusions 241m, 241n, and 241p are provided at a plurality of locations (three locations in the present embodiment) on the rear surface of the holder 241A (that is, the surface on the negative side in the Z direction). In addition, the position of the anti-collision projection is not limited to the position of the present embodiment.

The end faces of the anti-collision projections 241m, 241n, and 241p (that is, end faces on the -side in the Z direction) are located on the -side in the Z direction relative to the other portions of the holder 241A. The end surfaces of the collision prevention protrusions 241m, 241n, and 241p face the surface of the spacer 246 (that is, the surface on the positive side in the Z direction) via a gap in the Z direction.

The pair of projecting portions 241q and 241r are provided on the pair of opposing wall portions 241f and 241g, respectively. Each of the pair of projecting portions 241q and 241r supports the holder 241A so as to be able to swing relative to the first base 22a.

Specifically, one (that is, the + side in the Y direction) projecting portion 241q is provided on the + side surface in the Y direction of the opposing wall portion 241f in a state of projecting from the side surface in the + side in the Y direction.

On the other hand, the other (that is, Y-direction − side) projecting portion 241r projects from the Y-direction − side surface of the opposing wall portion 241g toward the Y-direction − side.

In addition, the pair of overhanging portions 241q and 241r respectively has flat spring seat surfaces 241s and 241t on the back surface (that is, the surface on the Z direction - side).

A pair of holder-side positioning projections 241u that protrude in the Z-direction − side are formed at two locations separated in the X-direction on the spring seat surfaces 241s and 241t.

The Z-direction + side surfaces of the second locking portions 243c of the pair of swing support springs 243 are adhesively fixed to the spring seat surfaces 241s and 241t, respectively. In this state, the pair of holder-side positioning protrusions 241u are inserted through the pair of second through holes 243f of the swing support spring 243, respectively. With this structure, the holder 241A is swingably supported with respect to the first base 22a.

[First actuator]
The first actuator 244A swings the holder 241A around the first axis. In the case of this embodiment, the first axis is the Y-axis passing through the contact portion between the swing guide surfaces 245a of the pair of swing guide members 245 and the spring-side guide surfaces 243h of the pair of swing support springs 243. They are parallel straight lines.

As in the first embodiment described above, the first actuator 244A is arranged on the back side of the prism 23 and the holder 241A (the In other words, it is arranged on the Z direction - side). In this embodiment, the direction of the first optical axis also corresponds to the first direction.

Also in this embodiment, the first actuator 244A comprises a first magnet 244f, a first coil 244c, and a first Hall element 244e.

The first magnet 244f is fixed to the rear side surface (that is, the negative side surface in the Z direction) of the holder 241A, which is a movable side member. In the case of this embodiment, the first magnet 244f consists of two magnet elements that are adjacent in the X direction. Each of these magnet elements is magnetized in the Z direction and has one magnetic pole on one side. The orientation of the magnetic poles of each magnet element is opposite to each other.

According to the first magnet 244f as described above, the non-magnetized portion in the X-direction central portion of the first magnet 244f can be reduced compared to the structure having two magnetic poles on one side as in the first embodiment.

The first coil 244c and the first hall element 244e are fixed to the surface (that is, the positive side in the Z direction) of a flexible printed circuit board (hereinafter referred to as FPC) 25 fixed to the back surface of the first base 22a. .

The first coil 244c and the first Hall element 244e are arranged in the base first opening 220 (see FIGS. 25 and 26) of the first base 22a. In addition, in the case of this embodiment, the first coil 244c is an oval so-called air-core coil. The first Hall element 244e is arranged radially inside the first coil 244c. A spacer 246 is arranged outside the first coil 244c.

The first actuator 244A configured as described above swings the holder 241A about the first axis under the control of a control unit (not shown) for image stabilization, as in the first embodiment.

Hereinafter, the operation when the holder 241A swings around the first axis will be described with reference to FIG.

The first actuator 244A generates a Lorentz force that displaces the first magnet 244f in the X direction when current flows through the first coil 244c. Since the first magnet 244f is fixed to the holder 241A, a force displacing the holder 241A in the X direction (for example, the direction of arrow F in FIG. 31) acts on the holder 241A based on the Lorentz force.

By the way, as described above, the spring-side guide surfaces 243h of the pair of swing support springs 243 fixed to the holder 241A align the swing guide surfaces 245a of the pair of swing guide members 245 with the Z direction - side (Fig. 31 in the direction of arrow _Za ).

Based on the pressing as described above, it inclines as indicated by the two-dot chain line _L1 in FIG. 31 (that is, it rolls on each rocking guide surface 245a). For convenience of explanation, the inclination angle of the two-dot chain line _L1 is shown exaggerated from the actual inclination angle of each spring-side guide surface 243h.

At this time, each twist-allowing portion 243g of the pair of swing support springs 243 is twisted so as to allow the inclination of each spring-side guide surface 243h. When each spring-side guide surface 243h is tilted as described above, the holder 241A swings around the first axis.

By controlling the direction of the current flowing through the first coil 244c, the displacement direction of the holder 241A is switched. When the first actuator 244A is de-energized, the holder 241A returns to its initial position based on the elastic force of the pair of swing support springs 243. As shown in FIG. The initial position of the holder 241A is a state in which the holder 241A does not swing. Other structures and functions/effects are the same as those of the first embodiment.

[4. Embodiment 4]
A camera module according to Embodiment 4 of the present invention will be described with reference to FIG. In the case of this embodiment, the structure of the lens module is different from that of the first embodiment described above. In particular, in the case of this embodiment, the structures of a pair of AF actuators 364c and 364d and a pair of second actuators 370c and 370d that constitute the lens module are different from those of the first embodiment.

Mainly, in a pair of AF actuators 364c and 364d to be described later, the structure of the AF magnets 365a and 365b, the arrangement of the AF Hall element 367a, and the newly provided AF second magnets 369a and 369b are the points of implementation. Different from form 1. Also, in the pair of second actuators 370c and 370d, the structure of the second magnets 371c and 371d and the arrangement of the second hall element 373 are different from those of the first embodiment.

The structures of the pair of AF actuators 364c, 364d and the pair of second actuators 370c, 370d will be described below with reference to FIG. 33 is a perspective view showing only the pair of AF actuators 364c, 364d and the pair of second actuators 370c, 370d.

Although illustration is omitted, the structure of the lens guide is also different from the lens guide 361 (see FIGS. 11 and 16) of the first embodiment described above.

The structure of the lens guide will be briefly described along with a description of the pair of AF actuators 364c, 364d and the pair of second actuators 370c, 370d. The structure of the lens module other than the pair of AF actuators 364c and 364d, the pair of second actuators 370c and 370d, and the lens guide is substantially the same as that of the lens module 3 of the first embodiment.

The structure of the prism module is the same as that of the first to third embodiments described above. The structure of the camera module according to the present embodiment will be described below, focusing on the structure of portions that differ from the first embodiment.

[4.1 About AF Actuator]
A pair of AF actuators 364c and 364d are third actuators for autofocus. The AF actuator 364c on one side (that is, the + side in the Y direction) has an AF magnet 365a, an AF coil 366a, and a second AF magnet 369a.

On the other hand, the other AF actuator 364d (that is, Y-direction negative side) has an AF magnet 365b, an AF coil 366b, an AF Hall element 367a, and a second AF magnet 369b.

The structure and arrangement of the AF magnets 365a and 365b and the AF coils 366a and 366b are the same as those of the first embodiment. The pair of AF actuators 364c and 364d are symmetrical in the Y direction except for the AF Hall element 367a. Therefore, the description of the structure similar to that of the first embodiment will be omitted, and only the structure and arrangement of the AF Hall element 367a and the second AF magnet 369b in the other AF actuator 364d will be described.

The AF hall element 367a of the other AF actuator 364d incorporates a device driver for the AF apparatus. Such an AF Hall element 367a is arranged in the vicinity of the AF coil 366b and on the - side of the AF coil 366b in the X direction.

The AF hall element 367a is directly fixed to an FPC (not shown) by soldering. Further, a reinforcing plate (not shown) is provided on the back surface of the portion of the FPC (not shown) to which the AF hall element 367a is fixed. Note that the AF hall element 367a may be fixed to the FPC via a substrate (not shown). In this case, the reinforcing plate may be omitted.

The second AF magnet 369b is a magnet different from the AF magnet 365b. Specifically, the second AF magnet 369b is magnetized in the Z direction and has one magnetic pole on one side.

The second AF magnet 369b faces the AF hall element 367a in the Z direction near the AF magnet 365b and on the - side in the X direction. Such a second AF magnet 369b increases the magnetic flux density passing through the AF Hall element 367a. Note that the second AF magnet 369b is also held by a holding portion provided in a lens guide (not shown).

[4.2 Second Actuator]
The second actuator 370c, which is one of the pair of second actuators 370c and 370d (that is, the + side in the Y direction), is spaced from the AF actuator 364c on one side (that is, the + side in the Y direction) by a predetermined distance in the Z direction. Face open. Such one second actuator 370 c has a second magnet 371 c , a second coil 372 a and a second Hall element 373 .

On the other hand, the second actuator 370d on the other side (that is, the negative side in the Y direction) faces the AF actuator 364d on the other side (that is, on the negative side in the Y direction) with a predetermined gap in the Z direction. Such another second actuator 370d has a second magnet 371d and a second coil 372b.

The structure and arrangement of the second coils 372a and 372b are the same as those of the first embodiment described above. The pair of second actuators 370 c and 370 d are symmetrical in the Y direction except for the second Hall element 373 . Therefore, the description of the structure similar to that of the first embodiment will be omitted, and only the structure and arrangement of the second magnet 371c and the second hall element 373 in one of the second actuators 370c will be described.

Each of the second magnets 371c in one of the second actuators 370c is composed of two magnet elements adjacent to each other in the Y direction. Each magnet element is a rectangular parallelepiped elongated in the X direction and magnetized in the Z direction. The orientation of the magnetic poles of each magnet element is opposite to each other. Each of the second magnets 371c is held by a holding portion provided in a lens guide (not shown).

The second Hall element 373 is provided in the vicinity of the second coil 372a and on the Z direction - side of the second coil 372a. The second Hall element 373 is directly fixed to an FPC (not shown) with solder. Such an arrangement mode of the second Hall element 373 enables the size of the second coil 372a to be increased. If a large second coil 372a is used, the output of the second vibration correction device 37 is increased.

[4.3 Supplementary notes]
Magnetic metal shield plates 6a and 6b are provided between the second magnets 371c and 371d and the AF magnets 365a and 365b in the Z direction. This prevents crosstalk between the pair of second actuators 370c, 370d and the pair of AF actuators 364c, 364d. Other structures and functions/effects are the same as those of the first embodiment.

[5. Embodiment 5]
A camera module according to Embodiment 5 of the present invention will be described with reference to FIGS. In the case of this embodiment, the structure of the lens module is different from that of the first embodiment described above. In particular, in the case of this embodiment, the structures of the pair of AF actuators 364e and 364f, the pair of second actuators 370e and 370f, and the FPC 363A that constitute the lens module are different from those of the first embodiment.

A pair of AF actuators 364e and 364f differ from the first embodiment mainly in the structure and number of AF magnets 365a and 365b, the number of AF coils 366a and 366b, and the arrangement of AF Hall elements 367a.

[5.1 About AF Actuator]
Each of the pair of AF actuators 364e and 364f is a third actuator for autofocus. One AF actuator 364e (that is, the + side in the Y direction) has a pair of AF magnets 365a, a pair of AF coils 366a, and an AF hall element 367a.

On the other hand, the other AF actuator 364f (that is, Y-direction negative side) has a pair of AF magnets 365b and a pair of AF coils 366b.

The pair of AF actuators 364e and 364f are symmetrical in the Y direction except for the AF Hall element 367a. Therefore, only the structure and arrangement of one AF actuator 364e will be described below.

In one AF actuator 364e, a pair of AF magnets 365a are adjacent to each other while being separated in the X direction. The pair of AF magnets 365a may each have a structure in which two magnet elements having one magnetic pole on one side are combined. Alternatively, each of the pair of AF magnets 365a may have a structure having two magnetic poles on one side. Each of the pair of AF magnets 365a is held by a holding portion of a lens guide (not shown).

The pair of AF coils 366a are adjacent to each other while being separated in the X direction. Such a pair of AF coils 366a is arranged on the Z direction - side of the pair of AF magnets 365a. In this state, the pair of AF coils 366a face the pair of AF magnets 365a in the Z direction with a predetermined gap therebetween.

Specifically, each of the pair of AF coils 366a is an oval so-called air-core coil. The pair of AF coils 366a are directly fixed to the first coil fixing portion 363a of the FPC 363A with their long axes aligned in the Y direction.

A first reinforcing plate 391a is provided on the back surface of the first coil fixing portion 363A in the FPC 363A. Also, in the FPC 363A, a first reinforcing plate 391b is provided on the back surface of the first coil fixing portion 363b to which the pair of AF coils 366a of the other AF actuator 364f is fixed. Furthermore, a second reinforcing plate 392a made of a non-magnetic material is provided on the rear surface of the first reinforcing plate 391a. A second reinforcing plate 392b made of a non-magnetic material is provided on the rear surface of the first reinforcing plate 391b. Note that the second reinforcing plates 392a and 392b may each be a magnetic material. The magnetic second reinforcing plates 392a and 392b contribute to the improvement of the magnetic flux density passing through the AF coils 366a and 366b, respectively.

The AF hall element 367a incorporates a device driver for the AF apparatus. Such an AF Hall element 367a is arranged between a pair of AF coils 366a. Such an AF Hall element 367a is directly fixed by soldering to the surface of the first coil fixing portion 363a in the FPC 363A.

The pair of AF actuators 364e and 364f may be replaced with the pair of AF actuators 364c and 370d of the fourth embodiment.

[5.2 Second Actuator]
One of the pair of second actuators 370e and 370f (that is, the + side in the Y direction), the second actuator 370e, faces one AF actuator 364e with a predetermined gap in the Z direction. Such a second actuator 370e has a second magnet 371c, a second coil 372a, and a second Hall element 373.

On the other hand, the second actuator 370f on the other side (that is, the negative side in the Y direction) has a second magnet 371d and a second coil 372b.

The structures of the second magnets 371c and 371d, the second coils 372a and 372b, and the second hall element 373 are the same as those of the fourth embodiment. However, in the case of this embodiment, the arrangement of these members is different from that of the above-described fourth embodiment.

Also, the pair of second actuators 370e and 370f are symmetrical in the Y direction except for the second Hall element 373. As shown in FIG. For this reason, the description of the same parts as those of the fourth embodiment will be omitted, and the parts of the second actuator 370e that are different from those of the fourth embodiment will be described.

The second coil 372a of one of the second actuators 370e is provided on the + side in the Z direction with respect to the second magnet 371c. The second coil 372a is fixed to the back surface of the second coil fixing portion 363f of the FPC 363A.

Also, in the FPC 363A, a first reinforcing plate 391c is provided on the surface of the second coil fixing portion 363f. In the FPC 363A, a first reinforcing plate 391d is provided on the surface of the second coil fixing portion 363g to which the second coil 372b of the other second actuator 370f is fixed. Furthermore, a second reinforcing plate 392c made of a non-magnetic material is provided on the surface of the first reinforcing plate 391c. A second reinforcing plate 392d made of a non-magnetic material is provided on the surface of the first reinforcing plate 391d. Note that the second reinforcing plates 392c and 392d may each be a magnetic material. The magnetic second reinforcing plates 392c and 392d contribute to improving the magnetic flux density passing through the second coils 372a and 372b, respectively.

The second Hall element 373 is provided in the vicinity of the second coil 372a and on the + side in the X direction from the second coil 372a.

[5.3 Supplement]
A pair of magnetic metal shield plates 6a and 6b are arranged between the second magnet 371c and the AF magnet 365a and between the second magnet 371d and the AF magnet 365b in the Z direction, respectively. be done. This prevents crosstalk between the pair of second actuators 370e and 370f and the pair of AF actuators 364e and 364f. Other structures and functions/effects are the same as those of the first embodiment.

[6. Embodiment 6]
A camera module according to Embodiment 6 of the present invention will be described with reference to FIG. In the case of this embodiment, the structure of the pair of AF actuators 364e and 364f is the same as that of the fifth embodiment described above, except that the position of the AF hall element 367a is switched between the pair of AF actuators 364e and 364f. Almost the same. Therefore, detailed description of the pair of AF actuators 364e and 364f will be omitted.

[6.1 Second Actuator]
A second actuator 370g, which is one of the pair of second actuators 370g and 370h (that is, the + side in the Y direction) has a second magnet 371a, a second coil 372a, and a third magnet 374a.

On the other hand, the second actuator 370h on the other side (that is, on the negative side in the Y direction) has a second magnet 371b, a second coil 372b, a second hall element 373, and a third magnet 374b.

The structure and arrangement of the second magnets 371a, 371b and the second coils 372a, 372b are the same as in the first embodiment. The pair of second actuators 370 g and 370 h are symmetrical in the Y direction except for the second Hall element 373 . For this reason, only the structure and arrangement of the second Hall element 373 and the third magnet 374b in the other second actuator 370h will be described below, omitting the description of the same parts as in the first embodiment.

The second magnets 371a and 371b may have a structure in which two magnet elements having one magnetic pole on one side are combined. Alternatively, the second magnets 371a and 371b may have a structure having two magnetic poles on one side.

The second hall element 373 of the other second actuator 370h is arranged on the Z direction - side and the X direction - side of the second coil 372b. Such a second Hall element 373 is fixed to an FPC (not shown).

The third magnet 374b of the other second actuator 370h is a magnet different from the second magnet 371a. Specifically, the third magnet 374b is magnetized in the Y direction and has one magnetic pole on one side. Such a third magnet 374b is arranged on the Z direction - side of the second Hall element 373 and faces the second Hall element 373 in the Z direction. The third magnet 374b is held by a holding portion provided in a lens guide (not shown).

[6.2 Notes]
In the case of this embodiment, magnetic metal shield plates (also referred to as yokes) 6a and 6b are arranged at positions adjacent to the second magnets 371a and 371b on the positive side in the Z direction. Such shield plates 6a and 6b function as yokes of the second magnets 371a and 371b. Other structures and functions/effects are the same as those of the first embodiment.

[7. Embodiment 7]
A camera module according to Embodiment 7 of the present invention will be described with reference to FIGS. In this embodiment, the structure of the pair of AF actuators 364e and 364f is substantially the same as that of the fifth embodiment.

[7.1 Second Actuator]
Of the pair of second actuators 370i and 370j, the second actuator 370i on the + side in the Y direction has a pair of second magnets 371a, a second coil 372a, and a second hall element 373. In the case of this embodiment, one second magnet 371a is added as compared with the structure of the first embodiment described above. The structure of each of these members is the same as that of the first embodiment.

A pair of second magnets 371a and a pair of second magnets 371b, which will be described later, may each have a structure in which two magnet elements having one magnetic pole on one side are combined. Alternatively, the pair of second magnets 371a and the pair of second magnets 371b may each have two magnetic poles on one side.

Such a pair of second magnets 371a are arranged so as to sandwich the second coil 372a from the Z direction with a predetermined interval. The second magnet 371a on one side (that is, the positive side in the Z direction) is held by one of the second magnet holding portions 368a of the lens guide 361A. On the other hand, the Z-direction − side second magnet 371a is held by one third magnet holding portion 368c of the lens guide 361A.

On the other hand, the second actuator 370j on the other side (that is, the negative side in the Y direction) has a pair of a second magnet 371b and a second coil 372b. Also in the other second actuator 370j, the number of second magnets 371b is increased by one compared with the structure of the first embodiment. The structure of each of these members is the same as that of the first embodiment.

Such a pair of second magnets 371b are arranged so as to sandwich the second coil 372b from the Z direction with a predetermined gap. The second magnet 371b on one side (that is, the positive side in the Z direction) is held by the other second magnet holding portion (not shown) of the lens guide 361A. On the other hand, the second magnet 371b on the other side (that is, the negative side in the Z direction) is held by the other third magnet holding portion (not shown) of the lens guide 361. As shown in FIG.

In the case of this embodiment as described above, since the pair of second magnets 371a and 371b are provided in the pair of second actuators 370i and 370j, respectively, the output of the second shake correction device 37 (see FIG. 5) is increased. can. Other structures and functions/effects are the same as those of the first embodiment.

[8 Embodiment 8]
A camera module according to Embodiment 8 of the present invention will be described with reference to FIGS. In the case of this embodiment, the structures of the prism module 2c and the lens module 3a are different from those of the above-described first and third embodiments. The structure of the camera module according to the present embodiment will be described below, focusing on the differences from the first and third embodiments.

[8.1 Prism module]
The prism module 2c of the camera module according to this embodiment includes a first cover 21 (see FIG. 1), a first base 22b, a prism 23, and a first shake correction device 24b (see FIGS. 40 and 41). The structures of the first cover 21 and the prism 23 are the same as those of the first embodiment described above.

[1st Base]
The first base 22b, like the first base 22 of the first embodiment described above, is a box-shaped member that is open on the positive side in the Z direction and the positive side in the X direction. The first base 22b has a base first opening 220 (see FIG. 43) in the bottom wall portion 229b on the Z-direction − side.

In the case of this embodiment, the first coil 244c and the first Hall element 244e of the first actuator 244A are arranged in the first opening 220 of the base.

The first base 22b supports a holder 241B (see FIG. 40) of the first shake correction device 24b so as to be able to swing around a first axis parallel to the Y direction. For this reason, the first base 22b has a first receiving portion 225c1 and a second receiving portion 225d1 (see FIG. 44) for holding the swing guide member 245, as in the third embodiment described above.

The first receiving portion 225c1 is provided on the first side wall portion 224a1 on the Y direction + side of the first base 22b. On the other hand, the second receiving portion 225d1 is provided on the first side wall portion 224b1 on the Y direction - side of the first base 22b.

Such first receiving portion 225c1 and second receiving portion 225d1 have shapes symmetrical to each other in the Y direction. Specifically, the first receiving portion 225c1 and the second receiving portion 225d1 are cylindrical recesses that open only on the end faces (upper surfaces) of the first side wall portion 224a1 and the first side wall portion 224b1 on the positive side in the Z direction, respectively. .

The first side wall portion 224a1 has a first dam portion 224c1 (see FIG. 44) between the Y-direction inner edge of the upper surface and the first receiving portion 225c1. On the other hand, the second side wall portion 224b1 has a first dam portion 224c2 (see FIG. 44) between the Y-direction inner edge of the upper surface and the first receiving portion 225d1. The first dam portion 224c1 and the first dam portion 224c2 are configured such that the adhesive that fixes the rocking guide member 245 (see FIG. 43) to the first receiving portion 225c1 and the first receiving portion 225d1 is applied to the center side in the Y direction. Contributes to preventing outflow.

The first side wall portion 224a1 has a second dam portion 224d1 (see FIG. 44) in a portion surrounding part of the Y-direction outer half portion of the first receiving portion 225c1 on the upper surface. On the other hand, the second side wall portion 224b1 has a second dam portion 224d2 in a portion surrounding part of the Y-direction outer half portion of the first receiving portion 225d1 on the upper surface. The second dam portion 224d1 and the second dam portion 224d2 contribute to preventing the adhesive that fixes the swing guide member 245 to the first receiving portion 225c1 and the first receiving portion 225d1 from flowing out in the Y direction.

The first side wall portion 224a1 has spring arranging spaces 224e1 and 224e2 (see FIG. 44) on the upper surface outside the second dam portion 224d1 in the Y direction. In this embodiment, the spring arrangement space 224e1 and the spring arrangement space 224e2 are separated in the X direction.

On the other hand, the first side wall portion 224b1 has spring arrangement spaces 224f1 and 224f2 (see FIG. 44) on the upper surface outside the second dam portion 224d2 in the Y direction. The spring arrangement space 224f1 and the spring arrangement space 224f2 are separated in the X direction. Part of a continuous portion 243i1 (specifically, a proximal side continuous portion 243j1) of a later-described rocking support spring 243A (see FIG. 45) is arranged in each of the spring arrangement spaces 224e1 and 224e2 and the spring arrangement spaces 224f1 and 224f2. be done.

The first side wall portion 224a1 has three convex portions 224g1, 224g2, and 224g3 in order from the + side in the X direction on the upper surface outside the second dam portion 224d1 in the Y direction. The convex portion 224g1 and the convex portion 224g3 are separated in the X direction and overlap each other in plan view from the X direction. The convex portion 224g2 is located outside the convex portions 224g1 and 224g3 in the Y direction (lower side in FIG. 44).

The spring arrangement space 224e1 is a space existing between the convex portion 224g1 and the convex portion 224g2. On the other hand, the spring arrangement space 224e2 is a space that exists between the convex portion 224g2 and the convex portion 224g3.

The first side wall portion 224b1 has three convex portions 224h1, 224h2, and 224h3 in order from the + side in the X direction on the upper surface outside the second weir portion 224d2 in the Y direction. The convex portion 224h1 and the convex portion 224h3 are separated in the X direction and overlap each other in plan view from the Y direction. The convex portion 224h2 is located outside the convex portions 224h1 and 224h3 in the Y direction (upper side in FIG. 44).

The spring arrangement space 224f1 is a space existing between the convex portion 224h1 and the convex portion 224h2. On the other hand, the spring placement space 224f2 is a space that exists between the convex portion 224h2 and the convex portion 224h3.

Each of the first side wall portions 224a1 and 224b1 has a first positioning protrusion 226a1 and a second positioning protrusion 227a1 (see FIG. 44) at both ends in the X direction on the upper surface. The first positioning convex portion 226a1 and the second positioning convex portion 227a1 respectively engage with a pair of swing support springs 243A (see FIG. 45), which will be described later, to position the pair of swing support springs 243A.

[First shake correction device]
As in Embodiments 1 and 3 described above, the first shake correction device 24b swings the prism 23 about a first axis parallel to the Y direction, and rotates the prism 23 about the first axis. image stabilization. Such a first shake correction device 24b is arranged in the first housing space 223 (see FIG. 6).

The first shake correction device 24b includes a pair of swing guide members 245 (see FIG. 43), a pair of swing support springs 243A, a holder 241B (see FIG. 42), and a first actuator 244A (see FIG. 43).

In the case of this embodiment as well, in the first shake correcting device 24b, the holder 241B is swingably supported by the first base 22b. In this state, the holder 241B swings around the first axis based on the driving force of the first actuator 244A. When the first actuator 244A is driven under the control of a control section (not shown), the holder 241B and the prism 23 swing around the first axis. As a result, shake in the direction of rotation about the first axis is corrected. A specific structure of each member included in the first shake correction device 24b will be described below.

[Swing guide member]
Each of the pair of swing guide members 245 is, for example, a spherical body made of ceramic, metal, or synthetic resin. One of the pair of swing guide members 245 (that is, the Y-direction + side) swing guide member 245 is arranged on the first receiving portion 225c1 (see FIG. 44) of the first base 22b. On the other hand, the swinging guide member 245 on the other side (that is, on the negative side in the Y direction) is arranged on the second receiving portion 225d1 of the first base 22b.

The pair of swing guide members 245 are respectively fixed to the first receiving portion 225c1 and the second receiving portion 225d1 with an adhesive. In this state, the half portion on the +Z direction side of the pair of swing guide members 245 is a swing guide surface 245a (also referred to as a swing guide portion; see FIG. 23). The swing guide surface 245a protrudes to the Z direction + side more than the first receiving portion 225c1 and the second receiving portion 225d1.

In addition, the Z-direction positive side end of each swing guide surface 245a is the portion other than the first positioning convex portion 226a1 and the second positioning convex portion 227a1 on the Z-direction positive side end faces of the first side wall portions 224a1 and 224b1. is located on the + side in the Z direction (see FIG. 31). Note that the swing guide member 245 is not limited to a sphere, and may be, for example, a hemisphere, a cylinder, or a semi-cylinder. Also, the swing guide member 245 may be integrated with the first base 22b. That is, the swing guide member may be configured by part of the first base 22b.

[Swing support spring]
The pair of rocking support springs 243A rockably supports a holder 241B, which will be described later, with respect to the first base 22b. Each of the pair of rocking support springs 243A is a plate spring made of metal, and is arranged on the Z direction + side of the pair of rocking guide members 245 .

One of the pair of swing support springs 243A (that is, the Y-direction + side) swing support spring 243A will be described below with reference to FIG. The swing support spring 243A on the other side (that is, the negative side in the Y direction) is symmetrical to the swing support spring 243A on the one side in the Y direction.

One rocking support spring 243A has a pair of first locking portions 243a1 and 243b1, a second locking portion 243c1, a torsion allowance portion 243g1, and a spring-side guide surface 243h1.

One of the pair of first locking portions 243a1 and 243b1 (that is, the + side in the X direction) of the first locking portion 243a1 is arranged at the end portion on the + side in the X direction of one swing support spring 243A. Such one first locking portion 243a1 has a first through hole 243d1.

On the other hand, the other (that is, the X-direction − side) first locking portion 243b1 is arranged at the X-direction − side end of one swing support spring 243A. Such other first locking portion 243b1 has a first through hole 243e1. A pair of first locking portions 243a1 and 243b1 are connected to each other by a connecting portion 243i1 extending in the X direction.

The continuation portion 243i1 has a continuation portion element 243j arranged on the + side in the X direction with respect to the later-described torsion allowance portion 243g1, and a continuation portion element 243k arranged on the − side in the X direction with respect to the torsion allowance portion 243g1. The connecting portion element 243j connects the torsion allowing portion 243g1 and the first locking portion 243a1. On the other hand, the connecting portion element 243k connects the torsion allowing portion 243g1 and the first locking portion 243b1.

The continuous part element 243j will be described below. The continuation element 243j has a proximal continuation 243j1 and a meandering continuation 243j2. The proximal side continuous portion 243j1 and the meandering continuous portion 243j2 are continuous.

The proximal side continuous portion 243j1 is provided at the end of the continuous portion element 243j on the side closer to the torsion-allowing portion 243g1. One end of the base-end-side continuous portion 243j1 (the end on the side closer to the twist-allowing portion 243g1) continues to the twist-allowing portion 243g1. The meandering continuation portion 243j2 is substantially S-shaped.

One end of the meandering continuous portion 243j2 (the end on the side closer to the twisting allowance portion 243g1) continues to the base end side continuous portion 243j1. The other end of the meandering continuation portion 243j2 (the end on the far side from the twisting allowance portion 243g1) continues to the first locking portion 243a1. The continuity element 243k is symmetrical to the continuity element 243j in the X direction. For this reason, the continuation element 243k is assigned the same reference numerals as the constituent members of the continuation element 243j, and the description thereof is omitted.

The Z-direction negative side surfaces of the pair of first locking portions 243a1 and 243b1 are adhesively fixed to the Z-direction + side end surface of the first side wall portion 224a1 of the first base 22b. In this state, the first positioning protrusions 226a1 and 227a1 of the first base 22b are inserted through the first through holes 243d1 and 243e1, respectively (see FIG. 43).

In the case of the other (Y direction − side) swing support spring 243A, the Z direction − side surface of the pair of first locking portions 243a1 and 243b1 is the Z direction of the first side wall portion 224b1 of the first base 22b. It is adhesively fixed to the end face on the + side.

The second locking portion 243c1 is provided between the first locking portions 243a1 and 243b1 in the X direction with a gap in the X direction therebetween. The second locking portion 243c1 has a pair of second through holes 243f1.

The Z-direction + side surface of the second locking portion 243c1 is adhesively fixed to a spring bearing surface 241s1 (see FIG. 32) of the holder 241B described later. In this state, the pair of holder-side positioning protrusions 241u (see FIG. 32) of the holder 241B are respectively inserted into the pair of second through holes 243f1. In the case of the swing support spring 243A on the other side (the negative side in the Y direction), the surface of the second locking portion 243c1 on the positive side in the Z direction is adhesively fixed to the spring bearing surface 241t (see FIG. 32) of the holder 241B. .

The twist-permitting portion 243g1 is a plate-shaped member extending in the Y direction, and includes an intermediate portion in the X direction of the continuous portion 243i1 (specifically, one end of each proximal side continuous portion 243j1) and a second locking portion. 243c1 are continued. Such a twist allowing portion 243g1 allows twisting of the second locking portion 243c1 with respect to the first locking portions 243a1 and 243b1 by being twisted.

Further, the torsion allowance portion 243g1 elastically deforms to allow relative displacement in the Z direction between the first locking portions 243a and 243b and the second locking portion 243c.

The spring-side guide surface 243h1 is configured by the back surface (that is, the surface on the Z-direction − side) of the second locking portion 243c1. Such a spring-side guide surface 243h1 abuts on the swing guide surface 245a of the swing guide member 245 (see FIG. 31).

The pair of swing support springs 243A is a plate-shaped member that is flat overall in a free state (also referred to as a non-assembled state). On the other hand, in the assembled state, the second locking portion 243c1 of the pair of rocking support springs 243A is positioned on the + side in the Z direction relative to the first locking portions 243a1 and 243b1 based on the elastic deformation of the torsion permitting portion 243g1. (See FIG. 31).

Specifically, in the assembled state, the torsion permitting portion 243g1 is elastically deformed toward the + side in the Z direction toward the second locking portion 243c1. Based on such elastic deformation, the spring-side guide surfaces 243h1 of the pair of rocking support springs 243A urge the rocking guide member 245 toward the Z direction - side.

In the assembled state of the pair of swing support springs 243A as described above, the proximal side continuous portions 243j1 of the pair of swing support springs 243A are arranged in the spring arrangement spaces 224e1 and 224e2 and the spring arrangement spaces 224f1 and 224f2, respectively. be done. Further, in the spring placement spaces 224e1, 224e2 and the spring placement spaces 224f1, 224f2, gel-like damping members 27 are placed so as to cover the base end side continuous portion 243j1 (see FIG. 43).

The damping member 27 is effective in suppressing unnecessary resonance of the pair of swing support springs 243A. From the viewpoint of suppressing unnecessary resonance, it is preferable to provide the damping member 27 near the portion of the pair of swing support springs 243A that deforms most during use. In this embodiment, the portion that deforms the most during use is the torsion allowance portion 243g1. Therefore, it is preferable that the damping member 27 cover the portion of the pair of swing support springs 243A near the torsion allowance portion 243g1.

[holder]
The holder 241B (see FIG. 40) is made of synthetic resin, for example, and holds the prism 23 swingably with respect to the first base 22b. The basic configuration of the holder 241B is substantially the same as the holder 241A (see FIG. 32) of the third embodiment described above. The configuration of the holder 241B that is different from that of the holder 241A of the third embodiment will be described below.

Projecting portions 241q1 and 241r1 of the holder 241B project from the pair of opposing wall portions 241f and 241g (see FIG. 32) in the Y direction by the projecting portions 241q and 241r (see FIG. 32) of the holder 241A of the third embodiment. less than Therefore, in the assembled state, the positions of both end surfaces of the holder 241B in the Y direction (that is, the outer end surfaces of the overhanging portions 241q1 and 241r1 in the Y direction) are positioned higher than the end surfaces of the first base 22b in the Y direction. Located on the central side. Such a configuration contributes to miniaturization and weight reduction of the holder 241B.

In addition, in the case of this embodiment, the spacer 246 (see FIG. 25) of the third embodiment is omitted. , 241p (see FIG. 32) are not provided. Other structures of the holder 241B are substantially the same as the holder 241 of the first embodiment or the holder 241A of the third embodiment.

[First actuator]
The first actuator 244A swings the holder 241B around the first axis. In the case of this embodiment, the first axis is the Y axis that passes through the contact portion between the swing guide surfaces 245a of the pair of swing guide members 245 and the spring-side guide surfaces 243h1 of the pair of swing support springs 243A. They are parallel straight lines. The structure of the first actuator 244A is the same as that of the third embodiment described above. Such a first actuator 244A swings the holder 241B around the first axis under the control of a camera shake correction control section (not shown), as in the third embodiment described above. The operation when the holder 241B swings about the first axis is the same as in the case of the third embodiment described above with reference to FIG.

Next, the lens module 3a of the camera module according to this embodiment will be described. The basic configuration of the lens module 3a is substantially the same as that of the lens module 3 of the first embodiment described above. The lens module 3a will be described below, focusing on the parts that differ from the lens module 3 of the first embodiment.

[8.2 Lens module]
The lens module 3a includes a second cover 31 (see FIG. 1), a second base 32A, a lens section 33, an AF device 36A, a second shake correction device 37A, and a reference member 38, as shown in FIGS. . The second cover 31, the lens portion 33, and the reference member 38 are the same as in the first embodiment described above.

[Second Base]
The second base 32A (see FIGS. 46 and 47) is combined with the above-described second cover 31 to provide a second accommodation space 320 in which the lens unit 33, the AF device 36A, and the second shake correction device 37A can be arranged. (see FIG. 4).

The basic configuration of the second base 32A is substantially the same as the second base 32 of the first embodiment described above. Therefore, the second base 32A will be described below, focusing on the parts that differ from the second base 32 of the first embodiment.

The second side wall portion 322a1 of the second base 32A has spring placement portions 324a1 and 324c1 (see FIG. 46) at both ends in the X direction on the side surface on the positive side in the Y direction. A spring 362a1 and a spring 362c1, which will be described later, are arranged in the spring arrangement portion 324a1 and the spring arrangement portion 324c1, respectively.

The second side wall portion 322a1 of the second base 32A has a slit 322i (see FIG. 46) on the side surface on the + side in the Y direction. The slit 322i has a space in which a first continuous portion 363i of an FPC 363B (see FIG. 50), which will be described later, can be arranged. The space is a space parallel to the ZY plane. The slits 322i are open on both the + side in the Y direction and both sides in the Z direction.

On the other hand, the second side wall portion 322b1 of the second base 32A has spring placement portions 324b1 and 324d1 (see FIG. 47) at both ends in the X direction on the negative side in the Y direction. A spring 362b1 and a spring 362d1, which will be described later, are arranged in the spring arrangement portion 324b1 and the spring arrangement portion 324d1, respectively.

The second side wall portion 322b1 of the second base 32A has a pair of concave portions 322j on the side surface on the negative side in the Y direction. A pair of second continuous portions 363j of an FPC 363B, which will be described later, are arranged in each of the concave portions 322j. Note that the configuration of the recess 322j is not limited to the illustrated case.

The spring placement portions 324a1-324d1 have gel placement portions 324e-324h, respectively. In this embodiment, the spring arrangement portions 324a1 to 324d1 respectively have gel arrangement portions 324e to 324h at the ends on the positive side in the Z direction. The gel arrangement portions 324e to 324h are configured to be capable of holding gel damping members 325a to 325d covering parts of the springs 362a1 to 362d1, respectively.

[Lens part]
The lens unit 33 is arranged in the second housing space 320 while being held by a lens guide 361B, which will be described later. Such a lens portion 33 has a cylindrical lens barrel and one or more lenses held by the lens barrel. As an example, the lens unit 33 has a telephoto lens group of, for example, an optical 3x or higher fixed between the end of the lens barrel on the negative side in the X direction and the end on the positive side in the X direction of the lens barrel. Note that the structure of the lens portion 33 is not limited to the structure described above.

[AF device]
The AF device 36A (see FIGS. 48 and 49) displaces the lens section 33 in the X direction for the purpose of autofocus. Specifically, the AF device 36A has a lens guide 361B, a plurality of (four in this embodiment) springs 362a1 to 362d1, an FPC 363B, and a pair of AF actuators 364a1 and 364b1.

[Lens guide]
A lens guide 361B (see FIGS. 46 to 48) has an accommodation space capable of holding a lens barrel. Such a lens guide 361B is arranged in the above-described second accommodation space 320 so as to be displaceable in the X direction (that is, the direction of the second optical axis) and the Y direction.

The lens guide 361B has a pair of first magnet holding portions 361a1 and 361b1 (see FIGS. 48 and 49) for holding AF magnets 365a1 and 365b1 of a pair of AF actuators 364a1 and 364b1, which will be described later. In the case of this embodiment, the pair of first magnet holding portions 361a1 and 361b1 are respectively arranged in the magnet spaces 322g and 322h (see FIG. 11) of the second base 32A. Note that FIG. 48 is a side view of the lens module 3a with some members omitted, viewed from the + side in the Y direction. On the other hand, FIG. 49 is a side view of the lens module 3a with some members omitted, viewed from the Y-direction − side.

In the case of this embodiment, the shape of the pair of first magnet holding portions 361a1 and 361b1 is different from that of the first embodiment described above in plan view from the Y direction (the state shown in FIGS. 48 and 49). Specifically, each of the pair of first magnet holding portions 361a1 and 361b1 is a concave portion that is open on the negative side in the Z direction when viewed from above in the Y direction. Such a pair of first magnet holding portions 361a1 and 361b1 respectively hold the inclined surface portions 361e1 and 361e2 facing the chamfered portions 365c1 and 365c2 of the AF magnets 365a1 and 365b1 while holding the AF magnets 365a1 and 365b1. have.

Specifically, the pair of first magnet holding portions 361a1 and 361b1 respectively have a pair of side portions 361c1 and 361c2 that are separated in the X direction and face each other in the X direction. Each of the pair of first magnet holding portions 361a1 and 361b1 has an upper surface portion 361d that connects the ends of the pair of side surface portions 361c1 and 361c2 on the positive side in the Z direction to each other in the X direction.

In addition, the pair of side surface portions 361c1 and 361c2 respectively have the above-described inclined surface portions 361e1 and 361e2 at the ends on the Z direction - side. The inclined surface portions 361e1 and 361e2 are inclined surfaces along the chamfered portions 365c1 and 365c2 of the AF magnets 365a1 and 365b1.

Specifically, the inclined surface portion 361e1 and the inclined surface portion 361e2 are inclined in such a direction that the distance between them in the X direction becomes shorter toward the − side (lower side in FIGS. 48 and 49) in the Z direction. That is, the distance in the X direction between the inclined surface portion 361e1 and the inclined surface portion 361e2 is the smallest at the negative side in the Z direction. Such inclined surface portions 361e1 and 361e2 contribute to preventing the AF magnets 365a1 and 365b1 from coming off on the Z direction - side in the assembled state.

The lens guide 361B has a pair of second magnet holding portions 368a1 and 368b1 (see FIGS. 48 and 49) for holding second magnets 371a1 and 371b1 of a pair of second actuators 370a1 and 370b1, which will be described later. In the case of this embodiment, the pair of second magnet holding portions 368a1 and 368b1 respectively overlap the coil mounting portions 322d and 322e of the second base 32A (see FIGS. 46 and 47) with a predetermined gap in the Z direction. .

In the case of this embodiment, the shape of the pair of second magnet holding portions 368a1 and 368b1 in a plan view from the Y direction (states shown in FIGS. 48 and 49) is different from that of the first embodiment described above. Specifically, each of the pair of second magnet holding portions 368a1 and 368b1 is a concave portion that is open on the negative side in the Z direction when viewed from above in the Y direction. Such a pair of second magnet holding portions 368a1 and 368b1, in a state of holding the second magnets 371a1 and 371b1 respectively, have inclined surface portions 368f1 and 368f2 facing the chamfered portions 371e1 and 371e2 of the second magnets 371a1 and 371b1. have.

Specifically, the pair of second magnet holding portions 368a1 and 368b1 respectively have a pair of side portions 368d1 and 368d2 that are separated in the X direction and face each other in the X direction. Each of the pair of second magnet holding portions 368a1 and 368b1 has an upper surface portion 368e that connects the ends of the pair of side surface portions 368d1 and 368d2 on the positive side in the Z direction to each other in the X direction.

In addition, the pair of side surface portions 368d1 and 368d2 respectively have the above-described inclined surface portions 368f1 and 368f2 at the ends on the Z direction - side. The inclined surface portions 368f1 and 368f2 are inclined surfaces along the chamfered portions 371e1 and 371e2 of the second magnets 371a1 and 371b1.

Specifically, the inclined surface portion 368f1 and the inclined surface portion 368f2 are inclined so that the distance between them in the X direction becomes shorter toward the - side in the Z direction. That is, the distance in the X direction between the inclined surface portion 368f1 and the inclined surface portion 368f2 is the smallest at the Z-direction negative side end. Such inclined surface portions 368f1 and 368f2 contribute to preventing the second magnets 371a1 and 371b1 from coming off on the Z direction - side in the assembled state.

[spring]
A plurality of (four in this embodiment) springs 362a1 to 362d1 (see FIGS. 46 and 47) elastically support the lens guide 361B to the second base 32A. In this state, the lens portion 33 can be displaced in the X direction and the Y direction with respect to the second base 32A.

In the case of this embodiment, the spring 362a1 supports the end of the lens guide 361B on the positive side in the X direction and the positive side in the Y direction on the second base 32A (see FIG. 46). The spring 362b1 supports the end of the lens guide 361B on the positive side in the X direction and the negative side in the Y direction on the second base 32A (see FIG. 47). The spring 362c1 supports the end of the lens guide 361B on the negative side in the X direction and the positive side in the Y direction on the second base 32 (see FIG. 46). Further, the spring 362d1 supports the X-direction-side and Y-direction-side ends of the lens guide 361B on the second base 32A (see FIG. 47).

Each of the springs 362a1-362d1 has a first fixing portion 362f1, a second fixing portion 362g1, and an elastic deformation portion 362h1 (see FIG. 51). FIG. 51 shows the springs 362a1 to 362d1 as arranged in the assembled state.

The first fixed portion 362f1 is fixed to the lens guide 361B, which is a movable member. The second fixed portion 362g1 is fixed to the second base 32A, which is a fixed side member. The elastic deformation portion 362h1 connects the first fixing portion 362f1 and the second fixing portion 362g1. The elastically deformable portion 362h1 is, for example, a linear member at least partially bent into a meandering shape.

Each of the elastically deformable portions 362h1 of the springs 362a1 to 362d1 has a gel locking portion 362i1 in the intermediate portion. In the assembled state, the gel locking portion 362i1 is covered with vibration damping members 325a, 325b, 325c and 325d (see FIGS. 46 and 47). By engaging with the vibration damping members 325a, 325b, 325c, and 325d, the gel locking portion 362i1 contributes to the improvement of adhesion with the vibration damping members 325a, 325b, 325c, and 325d.

In the case of this embodiment, the gel locking portion 362i1 is configured by a curved portion that curves so as to protrude in the X direction from the linear portion of the elastic deformation portion 362h1. Gel locking portions 362i1 of the springs 362a1 and 362b1 protrude in the X direction from the linear portion of the elastic deformation portion 362h1. On the other hand, the gel locking portions 362i1 of the springs 362c1 and 362d1 protrude from the linear portion of the elastic deformation portion 362h1 to the + side in the X direction. That is, the gel locking portions 362i1 of the springs 362a1 and 362b1 and the gel locking portions 362i1 of the springs 362c1 and 362d1 protrude in opposite directions in the X direction from the linear portion of the elastic deformation portion 362h1.

The shape of the gel locking portion 362i1 is not limited to that of this embodiment. A gel locking portion 362i2 shown in FIG. 52B is a modification of the gel locking portion 362i1. The gel locking portion 362i2 has a continuous portion 362j and an annular portion 362k.

The continuous portion 362j extends linearly in the X direction from the linear portion of the elastic deformation portion 362h1. The annular portion 362k is annular and continues to the tip of the continuous portion 362j. The continuous portion 362j may not be linear. A continuous portion 362j of the springs 362a1 and 362b1 extends from the linear portion of the elastically deformable portion 362h1 to the - side in the X direction. On the other hand, the continuous portion 362j of the springs 362c1 and 362d1 extends from the linear portion of the elastic deformation portion 362h1 to the + side in the X direction. For example, the continuous portion 362j may be meandering. Also, the shape of the annular portion 362k is not limited to the illustrated case. For example, the shape of annular portion 362k may be circular, elliptical, or polygonal. Note that the gel locking portion 362i2 may be omitted as shown in FIG. 52C.

In the assembled state, the springs 362a1-362d1 are respectively arranged in the spring arrangement portions 324a1-324d1 (see FIGS. 46 and 47) of the second base 32A. In this state, the gel locking portions 362i1 of the springs 362a1-362d1 are arranged in the gel placement portions 324e-324h of the spring placement portions 324a1-324d1, respectively. The gel locking portions 362i1 of the springs 362a1 to 362d1 are respectively covered with gel damping members 325a to 325d arranged in the gel placement portions 324e to 324h.

In addition, in the case of the present embodiment, the elastic deformation portion 362h has directionality in the X direction. The springs 362a1 and 362b1 are arranged in the same direction in the X direction. In other words, the spring 362a1 and the spring 362b1 are arranged so that at least the elastically deforming portion 362h1 overlaps in plan view from the Y direction.

The springs 362c1 and 362d1 are arranged in the same direction in the X direction. In other words, the spring 362c1 and the spring 362d1 are arranged so that at least the elastically deformable portion 362h1 overlaps in plan view from the Y direction.

The spring 362a1 and the spring 362c1 are arranged such that only the gel locking portion 362i2 of the elastic deformation portion 362h1 faces the opposite direction in the X direction. That is, the springs 362a1 and 362c1 are arranged so that the portions of the elastically deforming portion 362h1 other than the gel locking portion 362i2 face the same direction in the X direction.

The spring 362b1 and the spring 362d1 are arranged such that only the gel locking portion 362i2 of the elastic deformation portion 362h1 faces the opposite direction in the X direction. That is, the springs 362b1 and 362d1 are arranged so that the portions of the elastic deformation portion 362h1 other than the gel locking portion 362i2 face the same direction in the X direction.

[FPC]
FPC 363B (see FIG. 50) is a flexible printed circuit board and is fixed to second base 32A (see FIGS. 46 and 47). The FPC 363B, for example, supplies power to second actuators 370a1 and 370b1 of an AF device 36A and a second shake correction device 37A, which will be described later.

Specifically, the FPC 363B is a continuous flexible printed circuit board, and has an FPC base portion 363h, a pair of first coil fixing portions 363a and 363b, and a pair of second coil fixing portions 363d and 363e. .

The FPC base portion 363h is a plate-like member extending in the Y direction and fixed to the bottom surface portion 321 (see FIGS. 46 and 47) of the second base 32A. An AF coil 366a (see FIG. 48) of the AF device 36 is fixed to the first coil fixing portion 363a via the substrate 7a. In this state, the first coil fixing portion 363a and the AF coil 366a are arranged in the bottom through hole 321a (see FIG. 15) of the second base 32A.

On the other hand, an AF coil 366b (see FIG. 49) of the AF device 36 is fixed to the first coil fixing portion 363b via the substrate 7b. In this state, the first coil fixing portion 363b and the AF coil 366b are arranged in the bottom through hole 321b of the second base 32A.

The second coil fixing portions 363d and 363e respectively overlap the first coil fixing portions 363a and 363b with a predetermined gap in the Z direction. Second coils 372a and 372b of a second vibration correction device 37A, which will be described later, are fixed to the surfaces of the second coil fixing portions 363d and 363e, respectively (see FIGS. 48 and 49). In this state, the second coil fixing portions 363d and 363e are mounted on the surfaces of the coil mounting portions 322d and 322e (see FIG. 11) of the second base 32A, respectively.

The second coil fixing portion 363d is continuous with the FPC base portion 363h via the first continuous portion 363i. The first continuous portion 363i is a plate-like member parallel to the ZY plane. The first continuous portion 363i is arranged in a slit 322i (see FIG. 46) formed in the side surface of the second side wall portion 322a1 of the second base 32A on the Y direction + side.

On the other hand, the second coil fixing portion 363e is continuous with the FPC base portion 363h via the second continuous portion 363j. The second continuous portion 363j is a plate-like member parallel to the XZ plane. The second continuous portion 363j is arranged in the recessed portion 322j (see FIG. 47) of the second side wall portion 322b1 of the second base 32A.

[AF actuator]
A pair of AF actuators 364a1 and 364b1 (see FIGS. 48 and 49) are third actuators for autofocus. The Y-direction + side AF actuator 364a1 has an AF magnet 365a1 and an AF coil 366a. On the other hand, the AF actuator 364b1 on the Y direction − side has an AF magnet 365b1, an AF coil 366b, and an AF hall element 367. FIG. The pair of AF actuators 364a1 and 364b1 will be described below, focusing on the structure of the portions that differ from the first embodiment described above.

Each of the AF magnets 365a1 and 365b1 is elongated in the X direction and has a substantially hexagonal prism shape when viewed from the Y direction (the state shown in FIGS. 48 and 49).

The AF magnets 365a and 365b each have a pair of chamfered portions 365c1 and 365c2. A pair of chamfered portions 365c1 and 365c2 are respectively provided on a pair of side surfaces of the AF magnets 365a and 365b facing in the X direction. The chamfered portion 365c1 and the chamfered portion 365c2 overlap in plan view from the X direction. In addition, the chamfered portion 365c1 and the chamfered portion 365c2 are inclined in a direction in which the distance between them in the X direction decreases toward the - side in the Z direction in a plan view from the Y direction.

Such chamfered portion 365c1 and chamfered portion 365c2 respectively face the inclined surface portions 361e1 and 361e2 of the pair of first magnet holding portions 361a1 and 361b1 in the lens guide 361B in the assembled state. Other structures of the pair of AF actuators 364a1 and 364b1 are the same as those of the pair of AF actuators 364a and 364b of the first embodiment.

[Second shake correction device]
The second shake correction device 37A (see FIGS. 48 and 49) performs shake correction in the Y direction by displacing the lens unit 33 in the Y direction. Such a second shake correction device 37A is arranged in the above-described second housing space 320 (see FIG. 4).

The second shake correction device 37A has the lens guide 361B described above, the plurality of springs 362a1 to 362d1 described above, the FPC 363B described above, and a pair of second actuators 370a1 and 370b1. Lens guide 361B, springs 362a1-362d1, and FPC 363B are common to AF device 36A.

The second actuator 370a1 (see FIG. 48) on the positive side in the Y direction is arranged to overlap the AF actuator 364a1 with a predetermined gap in the Z direction. Such a second actuator 370a1 has a second magnet 371a1 and a second coil 372a. The second coil 372a is the same as in the first embodiment described above.

On the other hand, the second actuator 370b1 (see FIG. 49) on the negative side in the Y direction is arranged to overlap the AF actuator 364b1 with a predetermined gap in the Z direction. Such a second actuator 370a1 has a second magnet 371b1, a second coil 372b, and a second Hall element 373. The second coil 372b and the second Hall element 373 are the same as in the first embodiment described above. A pair of second actuators 370a1 and 370b1 will be described below, focusing on the structure of portions that differ from the first embodiment described above.

The second magnets 371a1 and 371b1 of the pair of second actuators 370a1 and 370b1 are respectively held by the second magnet holding portions 368a1 and 368b1 of the lens guide 361B.

Each of the second magnets 371a1 and 371b1 is elongated in the X direction and has a substantially hexagonal columnar shape when viewed from above in the Y direction (the state shown in FIGS. 48 and 49).

The second magnets 371a1 and 371b1 each have a pair of chamfered portions 371e1 and 371e2. A pair of chamfered portions 371e1 and 371e2 are respectively provided on a pair of side surfaces of the second magnets 371a1 and 371b1 facing each other in the X direction. The chamfered portion 371e1 and the chamfered portion 371e2 overlap in plan view from the X direction. Further, the chamfered portion 371e1 and the chamfered portion 371e2 are inclined in a direction such that the distance between them in the X direction decreases toward the negative side in the Z direction when viewed from above in the Y direction.

Such a chamfered portion 371e1 and a chamfered portion 371e2 respectively face the inclined surface portions 368f1 and 368f2 of the pair of second magnet holding portions 368a1 and 368b1 in the lens guide 361B in the assembled state. The structure of other portions of the pair of second actuators 370a1 and 370b1 is the same as that of the pair of second actuators 370a and 370b of the first embodiment described above. Also, in the camera module according to the present embodiment, the configuration, functions and effects of portions other than those described above are the same as those of the first embodiment.

The camera actuator and camera module according to the present invention can be mounted on thin camera-equipped devices such as smartphones, mobile phones, digital cameras, laptop computers, tablet terminals, portable game machines, and vehicle-mounted cameras.

1, 1a camera module 2, 2a, 2b, 2c prism module 21 first cover 22, 22a, 22b first base 220 base first opening 223 first accommodation space 224a, 224b, 224a1, 224b1 first side wall 224c1, 224c2 First dam portion 224d1, 224d2 Second dam portion 224e1, 224e2, 224f1, 224f2 Spring placement space 224g1, 224g2, 224g3 Convex portion 224h1, 224h2, 224h3 Convex portion 225a First bearing portion 225b Second bearing portion 225c, 225c1 First receiving portion 225d, 225d1 Second receiving portion 225e Stopper surface 225f Stopper surface 226, 226a First positioning convex portion 227, 227a Second positioning convex portion 228 Third positioning convex portion 229, 229b Bottom wall portion 229a Bottom groove 23 Prism 231 Optical path bending surfaces 24, 24a, 24b First shake correction devices 241, 241A, 241B Holder 241a Placement surfaces 241c, 241d Swing support portions 241f, 241g Opposing wall portions 241i, 241k Pressed portions 241m, 241n, 241p Collision prevention protrusions Part 241q, 241r, 241q1, 241r1 Overhanging part 241s, 241t Spring seat surface 241u Holder side positioning convex part 242 Retaining spring 242a Fixed base part 242c Pressing part 242e Spring side first hole 242g Spring side second hole 242i Spring side third hole 243 , 243A rocking support springs 243a, 243b, 243a1, 243b1 first locking portions 243c, 243c1 second locking portions 243d, 243e, 243d1, 243e1 first through holes 243f, 243f1 second through holes 243g, 243g1 torsion allowance portion 243h, 243h1 spring side guide surface 243i, 243i1 continuous portion 243j, 243k continuous portion element 243j1 base end side continuous portion 244, 244A first actuator 244a first magnet 244c first coil 244e first hall element 244f first magnet 245 oscillation Guide member 245a Swing guide surface 246 Spacer 246a Spacer-side through hole 25 FPC
26 yoke 27 damping member 3, 3a lens module 31 second cover 32, 32A second base 320 second accommodation space 321 bottom portion 321a, 321b bottom through hole 322a, 322b, 322a1, 322b1 second side wall portion 322d, 322e coil Mounting portion 322g, 322h Space for magnet 322i Slit 322j Recess 323 Reinforcement plate 324a, 324b, 324c, 324d, 324a1, 324b1, 324c1, 324d1 Spring placement portion 324e, 324f, 324g, 324h Gel placement portion 325a, 325b, 325c, 325d damping member 33 lens portion 36, 36A AF device 361, 361A, 361B lens guide 361a, 361b, 361a1, 361b1 first magnet holding portion 361c1, 361c2 side portion 361d upper surface portion 361e1, 361e2 inclined surface portion 362a, 362b, 362c, 362d, 362a1, 362b1, 362c1, 362d1 Springs 362f, 362f1 First fixing parts 362g, 362g1 Second fixing parts 362h, 362h1 Elastic deformation parts 362i1, 362i2 Gel locking parts 362j Continuing parts 362k Annular parts 363, 363A, 363B FPC
363a, 363b First coil fixing part 363d, 363e, 363f, 363g Second coil fixing part 363h FPC base part 363i First continuous part 363j Second continuous part 364a, 364b, 364c, 364d, 364e, 364f, 364a1, 364b1 AF actuator (third actuator)
365a, 365b, 365a1, 365b1 AF magnet 365c1, 365c2 Chamfered portion 366a, 366b AF coil 367, 367a AF Hall element 368a, 368b, 368a1, 368b1 Second magnet holding portion 368d1, 371d2 Side portion 368ef1 Upper surface portion 3688 , 368f2 Inclined surface portion 368c Third magnet holding portion 369a, 369b Second AF magnet 37, 37A Second shake correction device 370a, 370b, 370c, 370d, 370e, 370f, 370g, 370h, 370i, 370j, 370a1, 370b1 Two actuators 371a, 371b, 371c, 371d, 371a1, 371b1 Second magnets 371e1, 371e2 Chamfered portions 372a, 372b Second coil 373 Second Hall element 374a, 374b Third magnet 38 Reference member 38a Through hole 380a, 380b Stopper portion 383 Spring space 391a, 391b, 391c, 391d First reinforcing plate 4 Imaging element module 6a, 6b Shield plate 7a, 7b Substrate

Claims (7)

a movable side member holding an optical path bending member that bends incident light along the direction of the first optical axis;
a fixed-side member that rockably supports the movable-side member;
a driving unit having a magnet and a coil facing each other in the direction of the first optical axis and rocking the movable member;
the stationary member supports one of the magnet and the coil;
The movable-side member supports the other member of the magnet and the coil on its back surface, and has a contact surface provided on the fixed-side member or a member fixed to the fixed-side member and the first light beam. having convex portions on the back surface facing in the direction of the axis,
The stationary member is
Having a bottom wall portion having an opening for arranging the one member,
The member fixed to the fixed side member is a spacer provided in the opening so as to surround the one member and facing the convex portion in the direction of the first optical axis,
The abutted surface is provided on the spacer,
When the other member is displaced to approach the one member together with the movable-side member, the convex portion contacts the contacted surface before the other member contacts the one member. ,
Camera actuator. 2. The camera actuator according to claim 1, wherein a plurality of said protrusions are dispersedly arranged on said back surface. 2. The plurality of convex portions are provided on both ends of the back surface in a second direction and a third direction that are perpendicular to the first direction parallel to the direction of the first optical axis and are perpendicular to each other. Actuator for the camera described in . 2. The camera actuator according to claim 1, wherein said stationary member has a circuit board on which said coil, which is said one member, and said spacer are arranged. 5. The camera actuator according to claim 1, wherein the contacted surface is closer to the movable member than the surface of the one member facing the other member. a camera actuator according to any one of claims 1 to 5;
an image pickup element arranged behind the camera actuator ;
A camera module with a camera module according to claim 6;
a control unit that controls the camera module;
A camera-mounted device having a

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