Actuator for camera, camera module, and camera-mounted device

Abstract

In the camera actuator, camera module, and camera-mounted device of the present invention, the camera actuator includes: a movable-side member that holds a lens unit; a drive unit that displaces the movable-side member; and a fixed-side member that includes a base portion and accommodates the movable-side member above the base portion in a displaceable manner. A through hole is provided in the base portion and a reinforcing plate is embedded therein, and the drive unit is disposed in the through hole.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of April 10, 2019, an application number of 201980028827.4, an invention title of "Camera Actuator, Camera Module, and Camera Mounting Device", and an applicant of Mitsumi Electric Co., Ltd. Technical Field

[0002] The present invention relates to a camera actuator, a camera module, and a camera mounting device. Background Art

[0003] Conventionally, a thin camera mounting device equipped with a camera module such as a smartphone or a digital camera has been known. The camera module includes: a lens unit having one or more lenses, and an imaging element that images a subject image formed by the lens unit (see Patent Document 1).

[0004] The camera module disclosed in Patent Document 1 has: an autofocus function (hereinafter referred to as "AF function", AF: Auto Focus, autofocus) that automatically focuses on a subject during shooting, and an optical image stabilization function (hereinafter referred to as "OIS function", OIS: Optical Image Stabilization) that corrects camera shake generated in the camera. Such a camera module has an autofocus actuator for moving the lens unit in the direction of the optical axis, and an optical image stabilization actuator for moving the lens unit in a plane orthogonal to the direction of the optical axis.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2015-92285 Summary of the Invention

[0008] Problems to be Solved by the Invention

[0009] In the above-described camera module disclosed in Patent Document 1, during autofocus or optical image stabilization, each of the above actuators displaces the lens in a specific direction (for example, the direction of the optical axis or a direction orthogonal to the direction of the optical axis). In such a camera module, it is desired that the camera actuator can displace the lens in a specific direction with good accuracy.

[0010] An object of the present invention is to provide a camera actuator, a camera module, and a camera mounting device that can displace a lens in a specific direction with good accuracy.

[0011] Solutions to the Problems

[0012] One aspect of the actuator for a camera according to the present invention includes: a fixed-side member; a movable-side member that is disposed so as to be displaceable relative to the fixed-side member and holds a lens unit; and a drive unit for autofocus that has an AF actuator and displaces the movable-side member in the X direction. The AF actuator has a first AF coil and a second AF coil. The fixed-side member includes a bottom surface portion having a base made of synthetic resin, and a metal reinforcing plate is embedded in the base. The bottom surface portion has through holes on both sides in the Y direction of the reinforcing plate. The Y direction is orthogonal to the X direction. The first AF coil is disposed in one of the through holes, and the second AF coil is disposed in the other through hole. The drive unit generates a resultant force obtained by synthesizing the following forces as a driving force: a thrust force that displaces the movable-side member in the X direction and a resistance force that counteracts an external force acting in a manner that causes the movable-side member to deviate from the X direction.

[0013] One aspect of the actuator for a camera according to the present invention includes: a fixed-side member; a movable-side member that is disposed so as to be displaceable relative to the fixed-side member and holds a lens unit; and a drive unit that generates a driving force for displacing the movable-side member in a plane including a first direction and a second direction orthogonal to the first direction. The drive unit generates a resultant force obtained by synthesizing the following forces as a driving force: a thrust force that displaces the movable-side member in a specific direction in either the first direction or the second direction and a resistance force that counteracts an external force acting in a manner that causes the movable-side member to deviate from the specific direction.

[0014] One aspect of the camera module according to the present invention includes: the actuator for a camera according to a certain aspect described above; and an imaging element that is disposed at a rear stage of the lens unit.

[0015] One aspect of the camera mounting device according to the present invention includes: the camera module described above; and a control unit that controls the camera module.

[0016] Advantages of the Invention

[0017] According to the present invention, it is possible to provide an actuator for a camera, a camera module, and a camera mounting device that can displace a lens accurately in a specific direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of a camera module according to an embodiment of the present invention.

[0019] Figure 2 is a perspective view showing a prism module of the camera module with some components omitted.

[0020] Figure 3 is from the direction ofFigure 2 A perspective view showing a prism module of a component with a part omitted, observed from different angles.

[0021] Figure 4 A perspective view of the state where the bracket is assembled to the first base.

[0022] Figure 5 A perspective view of the first base.

[0023] Figure 6 A top view of the first base.

[0024] Figure 7 A perspective view showing only the swing support spring removed.

[0025] Figure 8 A sectional view of the prism module.

[0026] Figure 9A A perspective view of the lens module.

[0027] Figure 9B It is from Figure 9A A perspective view of the lens module observed from a different angle.

[0028] Figure 9C A perspective view of the lens module of a component with a part omitted.

[0029] Figure 10 It is when observed from a different angle from Figure 9C A perspective view showing the lens module of a component with a part omitted.

[0030] Figure 11 A side view of the lens module with the second base omitted.

[0031] Figure 12 It is when observed from the opposite side from Figure 11 A side view showing the lens module with the second base omitted.

[0032] Figure 13 It is a view of the lens module of a component with a part omitted, along the Figure 11 A1 arrow shown in

[0033] Figure 14 A perspective view showing the spring removed in a configuration that maintains the assembled state.

[0034] Figure 15 A perspective view of the FPC, AF actuator, and rear OIS actuator.

[0035] Figure 16 It is from a different angle from Figure 15Stereograms of the FPC, AF actuator, and rear OIS actuator observed from different angles.

[0036] Figure 17A It is a circuit diagram of the AF drive control circuit.

[0037] Figure 17B It is a circuit diagram of Modification 1 of the AF drive control circuit.

[0038] Figure 18 It is a stereogram of the second base.

[0039] Figure 19 It is from Figure 18 A stereogram of the second base observed from a different angle.

[0040] Figure 20 It is an exploded stereogram of the second base.

[0041] Figure 21 It is a stereogram of the second base, AF actuator, and rear OIS actuator.

[0042] Figure 22 It is from Figure 21 A stereogram of the second base, AF actuator, and rear OIS actuator observed from a different angle.

[0043] Figure 23A It is a top view of the lens module with some components omitted.

[0044] Figure 23B It is a schematic top view of the lens guide and reference component.

[0045] Figure 24 It is a top view showing the lens module of Embodiment 2 in a state where a part of it is omitted.

[0046] Figure 25 It is a circuit diagram of the OIS drive control circuit.

[0047] Figure 26 It is a stereogram showing Modification 1 of the lens module.

[0048] Figure 27A And Figure 27B It is a diagram showing an example of a camera mounting device equipped with a camera module.

[0049] Figure 28A And Figure 28B It is a diagram of an automobile as a camera mounting device equipped with an in-vehicle camera module. Detailed implementation manners

[0050] Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0051] [Embodiment 1]

[0052] Refer to Figures 1 to 23B , and the camera module of Embodiment 1 of the present invention will be described. Hereinafter, after the outline of the camera module 1 is described, 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 described. It should be noted that the camera actuator, the camera module, and the camera-mounted device of the present invention may have all the structures described below, or may not have some of the structures.

[0053] [Camera Module]

[0054] The camera module 1 is mounted on, for example, a thin camera-mounted device such as a smartphone M (refer to Figure 27A , Figure 27B ), a mobile phone, a digital video camera, a notebook computer, a tablet terminal, a portable game console, or a vehicle-mounted camera.

[0055] Hereinafter, each part constituting the camera module 1 of the present embodiment will be described based on the state of being incorporated into the camera module 1. In addition, when the structure of the camera module 1 of the present embodiment is described, an orthogonal coordinate system (X, Y, Z) is used. The same orthogonal coordinate system (X, Y, Z) is also used in the figures described below.

[0056] For example, the camera module 1 is mounted in such a manner that when the camera-mounted device actually takes a picture, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction. The light from the object to be photographed is incident on the prism 23 of the prism module 2 from the + side (positive side) in the Z direction as shown by the single-dot chain line α (also referred to as the first optical axis) in Figure 2 . The light incident on the prism 23 is bent by the optical path bending surface 231 of the prism 23 (refer to Figure 2 and Figure 9C ) as shown by the single-dot chain line β (also referred to as the second optical axis), and is guided to the lens unit 33 of the lens module 3 disposed at the rear stage (i.e., the + side in the X direction) of the prism 23. Then, the imaging element module 4 (refer to Figure 8 ) disposed at the rear stage of the lens module 3 captures the image of the object to be photographed imaged through the lens unit 33 (refer to Figure 1 ). Figure 9C )

[0057] The above-described camera module 1 is provided with a first shake correction device 24 (refer to Figure 2 ) incorporated into the prism module 2 and a second shake correction device 35 (refer to Figure 11) to perform shake correction (OIS: Optical Image Stabilization). In addition, the above-described camera module 1 displaces the lens unit 33 in the X direction by loading the AF device 34 (refer to Figure 11 ) of the lens module 3 to perform autofocus.

[0058] Next, with reference to Figures 1 to 23B , the prism module 2, the lens module 3, and the imaging element module 4 included in the camera module 1 of the present embodiment will be described.

[0059] [Prism Module]

[0060] With reference to Figures 1 to 8 the prism module 2 will be described. The prism module 2 includes a first cover 21, a first base 22, a prism 23, and a first shake correction device 24.

[0061] [First Cover]

[0062] As shown in Figure 1 , the first cover 21 is, for example, a box-shaped member made of synthetic resin or non-magnetic metal and open on both sides in the Z direction and the + side in the X direction. Light from the object side can enter the internal space of the first cover 21 through the opening portion on the + side in the Z direction of the first cover 21. The first cover 21 as described above is assembled to the first base 22 to be described later from the + side in the Z direction.

[0063] [First Base]

[0064] With reference to Figure 5 and Figure 6 the first base 22 will be described. The first base 22 is a box-shaped member open on the + side in the Z direction and the + side in the X direction. The first base 22 has a base-side opening portion 220 in the bottom wall portion 229 on the - side in the Z direction.

[0065] In the present embodiment, the first coil 244c and the first Hall element 244e of the front-side OIS actuator 244 are disposed in the base-side opening portion 220.

[0066] The first base 22 supports the bracket 241 of the first shake correction device 24 so that the bracket 241 can swing about a first axis parallel to the Y direction. To this end, the first base 22 has a first receiving portion 225c and a second receiving portion 225d for holding the swing guide member 245 to be described later.

[0067] The first receiving portion 225c is provided on the first side wall portion 224a on the + side in the Y direction of the first base 22. On the other hand, the second receiving portion 225d is provided on the first side wall portion 224b on the - side in the Y direction of the first base 22.

[0068] Such a first receiving portion 225c and a second receiving portion 225d have shapes that are symmetric to each other in the Y direction. Specifically, the first receiving portion 225c and the second receiving portion 225d are each a cylindrical concave portion that opens only at the end surface (upper surface) on the +Z side of the first side wall portion 224a and the first side wall portion 224b.

[0069] The first side wall portion 224a has a first weir portion 224c1 between the inner edge in the Y direction of the upper surface and the first receiving portion 225c. On the other hand, the first side wall portion 224b has a first weir portion 224c2 between the inner edge in the Y direction of the upper surface and the second receiving portion 225d. Such first weir portions 224c1 and first weir portions 224c2 each help prevent the adhesive for fixing the swing guide member 245 to the first receiving portion 225c and the second receiving portion 225d from flowing out toward the center side in the Y direction.

[0070] A portion of the first side wall portion 224a in the upper surface has a second weir portion 224d1, and this portion surrounds a part of the outer half in the Y direction of the first receiving portion 225c. On the other hand, a portion of the first side wall portion 224b in the upper surface has a second weir portion 224d2, and this portion surrounds a part of the outer half in the Y direction of the second receiving portion 225d. Such second weir portions 224d1 and second weir portions 224d2 each help prevent the adhesive for fixing the swing guide member 245 to the first receiving portion 225c and the second receiving portion 225d from flowing out toward the outer side in the Y direction.

[0071] A portion of the first side wall portion 224a in the upper surface that is more on the outer side in the Y direction than the second weir portion 224d1 has spring arrangement spaces 224e1, 224e2. In the present embodiment, the spring arrangement space 224e1 and the spring arrangement space 224e2 are spaced apart in the X direction.

[0072] On the other hand, a portion of the first side wall portion 224b in the upper surface that is more on the outer side in the Y direction than the second weir portion 224d2 has spring arrangement spaces 224f1, 224f2. The spring arrangement space 224f1 and the spring arrangement space 224f2 are spaced apart in the X direction. In the spring arrangement spaces 224e1, 224e2 and the spring arrangement spaces 224f1, 224f2, a part of a continuous portion 243i (specifically, a base end side continuous portion 243j1) of a swing support spring 243 (refer to Figure 7 ) described later is respectively arranged.

[0073] The portion of the first side wall portion 224a that is more outward in the Y direction than the second weir portion 224d1 in the upper surface has three convex portions 224g1, 224g2, and 224g3 in order from the + side in the X direction. The convex portion 224g1 and the convex portion 224g3 are spaced apart in the X direction and are arranged at the same position in the Y direction. The convex portion 224g2 is arranged at a position more outward in the Y direction than the convex portion 224g1 and the convex portion 224g3 ( Figure 6 the lower side in).

[0074] A spring arrangement space 224e1 exists between the convex portion 224g1 and the convex portion 224g2. On the other hand, a spring arrangement space 224e2 exists between the convex portion 224g2 and the convex portion 224g3.

[0075] The portion of the first side wall portion 224b that is more outward in the Y direction than the second weir portion 224d2 in the upper surface has three convex portions 224h1, 224h2, and 224h3 in order from the + side in the X direction. The convex portion 224h1 and the convex portion 224h3 are spaced apart in the X direction and are arranged at the same position in the Y direction. The convex portion 224h2 is arranged at a position more outward in the Y direction than the convex portion 224h1 and the convex portion 224h3 ( Figure 6 the upper side in).

[0076] A spring arrangement space 224f1 is provided between the convex portion 224h1 and the convex portion 224h2. On the other hand, a spring arrangement space 224f2 is provided between the convex portion 224h2 and the convex portion 224h3.

[0077] The first side wall portions 224a and 224b respectively have a first positioning convex portion 226 and a second positioning convex portion 227 at both ends in the X direction of the upper surface. The first positioning convex portion 226 and the second positioning convex portion 227 are respectively engaged with a pair of swing support springs 243 (refer to Figure 7 ) described later, thereby positioning the pair of swing support springs 243.

[0078] [First jitter correction device]

[0079] Refer to Figure 4 , Figure 5 and Figure 8 to describe the first jitter correction device 24. The first jitter correction device 24 is a drive unit that swings the prism 23 about a first axis parallel to the Y direction, thereby performing jitter correction in the rotational direction about the first axis. Such a first jitter correction device 24 is arranged in a first accommodation space 223 (refer to Figure 8 ) covered by the first base 22 and the first cover 21.

[0080] The first shake correction device 24 includes a pair of swing guide members 245, a pair of swing support springs 243, a bracket 241, and a front OIS actuator 244.

[0081] In the first shake correction device 24, the bracket 241 is supported by the first base 22 so as to be swingable relative to the first base 22. In this state, the bracket 241 swings about the first axis based on the driving force of the front OIS actuator 244. If the front OIS actuator 244 is driven under the control of the control unit 5 (see Figure 17A ), the bracket 241 and the prism 23 swing about the first axis parallel to the Y direction. Thereby, the shake in the rotational direction about the first axis is corrected. Hereinafter, the specific structures of the respective components included in the first shake correction device 24 will be described.

[0082] [Swing guide member]

[0083] Refer to Figure 5 and Figure 6 A pair of swing guide members 245 will be described. The pair of swing guide members 245 are, for example, ceramic, metal, or synthetic resin spheres. One of the pair of swing guide members 245 (i.e., the + side in the Y direction) is disposed in the first receiving portion 225c of the first base 22. On the other hand, the other of the pair of swing guide members 245 (i.e., the - side in the Y direction) is disposed in the second receiving portion 225d of the first base 22.

[0084] The pair of swing guide members 245 are respectively fixed to the first receiving portion 225c and the second receiving portion 225d by an adhesive. In this state, half of the + side in the Z direction of the pair of swing guide members 245 functions as a swing guide surface. The swing guide surface protrudes to a position closer to the + side in the Z direction than the first receiving portion 225c and the second receiving portion 225d.

[0085] In addition, the swing guide member 245 is not limited to a sphere, and may be, for example, a hemisphere, a cylinder, or a semi-cylinder. Further, the swing guide member 245 may be integral with the first base 22. That is, the swing guide member may be constituted by a part of the first base 22.

[0086] [Swing support spring]

[0087] Refer to Figure 7 A pair of swing support springs 243 will be described. The pair of swing support springs 243 support the bracket 241 (described later) on the first base 22 so that the bracket 241 (described later) can swing relative to the first base 22. The pair of swing support springs 243 are respectively metal leaf springs and are disposed on the + side in the Z direction of the pair of swing guide members 245.

[0088] Next, one of the pair of swing support springs 243 (i.e., the + side in the Y direction) of the swing support spring 243 will be described. The other swing support spring 243 (i.e., the - side in the Y direction) is symmetric with the one swing support spring 243 in the Y direction.

[0089] One of the swing support springs 243 has a pair of first locking portions 243a, 243b, a second locking portion 243c, a torsion permitting portion 243g, and a spring-side guide surface 243h.

[0090] One of the pair of first locking portions 243a, 243b (i.e., the first locking portion 243a on the + side in the X direction) is disposed at the end portion on the + side in the X direction of one of the swing support springs 243. The above-mentioned one first locking portion 243a has a first through hole 243d.

[0091] On the other hand, the other first locking portion 243b (i.e., the first locking portion 243b on the - side in the X direction) is disposed at the end portion on the - side in the X direction of one of the swing support springs 243. The above-mentioned other first locking portion 243b has a first through hole 243e. The pair of first locking portions 243a, 243b are connected to each other by a continuous portion 243i extending in the X direction.

[0092] The continuous portion 243i has: a continuous portion element 243j disposed at a position closer to the + side in the X direction than a later-described torsion permitting portion 243g, and a continuous portion element 243k disposed at a position closer to the - side in the X direction than the torsion permitting portion 243g. The continuous portion element 243j connects the torsion permitting portion 243g to the first locking portion 243a. On the other hand, the continuous portion element 243k connects the torsion permitting portion 243g to the first locking portion 243b.

[0093] Next, the continuous portion element 243j will be described. The continuous portion element 243j has a proximal-side continuous portion 243j1 and a meandering continuous portion 243j2. The proximal-side continuous portion 243j1 is connected to the meandering continuous portion 243j2.

[0094] The proximal-side continuous portion 243j1 is disposed at the end portion on the side closer to the torsion permitting portion 243g in the continuous portion element 243j. One end of the proximal-side continuous portion 243j1 (the end portion on the side closer to the torsion permitting portion 243g) is connected to the torsion permitting portion 243g.

[0095] The meandering continuous portion 243j2 is substantially S-shaped. One end of the meandering continuous portion 243j2 (the end closer to the torsion allowance portion 243g) is connected to the proximal-side continuous portion 243j1. The other end of the meandering continuous portion 243j2 (the end farther from the torsion allowance portion 243g) is connected to the first locking portion 243a. The continuous portion element 243k is symmetric with the continuous portion element 243j in the X direction. Therefore, regarding the continuous portion element 243k, the same reference numerals as those of the components of the continuous portion element 243j are given, and the description is omitted.

[0096] The Z-direction - side surfaces of the pair of first locking portions 243a, 243b are adhesively fixed to the Z-direction + side end surfaces in the first side wall portion 224a of the first base 22. In this state, the first positioning protrusion 226 and the second positioning protrusion 227 of the first base 22 are respectively inserted into the first through holes 243d, 243e (see Figure 5 ).

[0097] In addition, in the case of the other (Y-direction - side) swing support spring 243, the Z-direction - side surfaces of the pair of first locking portions 243a, 243b are adhesively fixed to the Z-direction + side end surfaces in the first side wall portion 224b of the first base 22.

[0098] The second locking portion 243c is provided in the X-direction portion between the first locking portions 243a, 243b with a gap in the X direction. The second locking portion 243c has a pair of second through holes 243f.

[0099] The Z-direction + side surface of the second locking portion 243c is adhesively fixed to a spring seat surface (not shown) formed on the back surfaces of the protruding portions 241q, 241r of the bracket 241 described later. In this state, a pair of bracket-side positioning protrusions (not shown) formed on the back surfaces of the protruding portions 241q, 241r of the bracket 241 are respectively inserted into the pair of second through holes 243f. In addition, in the case of the other (Y-direction - side) swing support spring 243, the Z-direction + side surface of the second locking portion 243c is adhesively fixed to a spring seat surface (not shown) formed on the back surfaces of the protruding portions 241q, 241r of the bracket 241.

[0100] The torsion allowance portion 243g is a plate-like member extending in the Y direction, and connects the X-direction intermediate portion of the continuous portion 243i (specifically, one end of each proximal-side continuous portion 243j1) to the second locking portion 243c. Such a torsion allowance portion 243g allows the torsion of the second locking portion 243c relative to the first locking portions 243a, 243b through torsion.

[0101] In addition, the torsion permitting portion 243g allows relative displacement in the Z direction between each of the first locking portions 243a, 243b and the second locking portion 243c through elastic deformation.

[0102] The spring-side guide surface 243h is formed by the back surface (i.e., the surface on the -Z direction side) of the second locking portion 243c. Such a spring-side guide surface 243h abuts against the swing guide surface of the above-described swing guide member 245.

[0103] In a free state (also referred to as a non-assembled state), the pair of swing support springs 243 is a flat plate-like member as a whole. On the other hand, in the assembled state, in the pair of swing support springs 243, the second locking portion 243c is disposed at a position closer to the +Z direction than the first locking portions 243a, 243b based on the elastic deformation of the torsion permitting portion 243g.

[0104] Specifically, in the assembled state, the torsion permitting portion 243g elastically deforms in such a manner that it gets closer to the +Z direction as it gets closer to the second locking portion 243c. Based on such elastic deformation, the spring-side guide surfaces 243h of the pair of swing support springs 243 apply a force to the swing guide member 245 in the -Z direction.

[0105] In the assembled state of the pair of swing support springs 243 as described above, the proximal-side continuous portions 243j1 of the pair of swing support springs 243 are respectively disposed in the spring arrangement spaces 224e1, 224e2 and the spring arrangement spaces 224f1, 224f2. And in the spring arrangement spaces 224e1, 224e2 and the spring arrangement spaces 224f1, 224f2, a gel-like vibration damping member 27 is disposed so as to cover the proximal-side continuous portions 243j1 (refer to Figure 5 , Figure 6 and Figure 7 ).

[0106] The vibration damping member 27 is effective for suppressing resonance of the pair of swing support springs 243. From the viewpoint of suppressing resonance, it is preferable that the vibration damping member 27 is disposed near the portion that is maximally deformed during use in the pair of swing support springs 243. The portion that is maximally deformed during use is the torsion permitting portion 243g. Therefore, it is preferable that the vibration damping member 27 covers the portion of the pair of swing support springs 243 that is closer to the torsion permitting portion 243g.

[0107] [Bracket]

[0108] Refer to Figure 4 and Figure 8 , and the bracket 241 will be described. The bracket 241 is made of, for example, synthetic resin, and holds the prism 23 in a state where the prism 23 can swing relative to the first base 22.

[0109] The bracket 241 includes a placement surface 241a, a pair of opposing wall portions 241f, 241g, and a pair of protruding portions 241q, 241r.

[0110] The placement surface 241a faces the optical path bending surface 231 of the prism 23 from the back side (Z-direction side). The placement surface 241a has, for example, a surface parallel to the optical path bending surface 231. In addition, the placement surface 241a is not limited to the structure of the present embodiment, and may be, for example, a protrusion having a shape capable of positioning the prism 23.

[0111] The pair of opposing wall portions 241f, 241g are plate-like members parallel to the XZ plane and are arranged at intervals in the Y direction. Such a pair of opposing wall portions 241f, 241g are arranged with the placement surface 241a therebetween in the Y direction.

[0112] The pair of protruding portions 241q, 241r are respectively provided on the pair of opposing wall portions 241f, 241g. Such a pair of protruding portions 241q, 241r support the bracket 241 on the first base 22 in such a manner that the bracket 241 can swing relative to the first base 22.

[0113] Specifically, the protruding portion 241q on one side (i.e., the Y-direction + side) protrudes from the Y-direction + side surface of the opposing wall portion 241f toward the Y-direction + side.

[0114] On the other hand, the protruding portion 241r on the other side (i.e., the Y-direction - side) protrudes from the Y-direction - side surface of the opposing wall portion 241g toward the Y-direction - side. In addition, the pair of protruding portions 241q, 241r each have a flat spring seat surface (not shown) on the back surface (i.e., the Z-direction - side surface). The spring seat surface has a pair of bracket-side positioning convex portions (not shown) protruding toward the Z-direction - side at two positions spaced apart in the X direction.

[0115] 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 respectively. In this state, the pair of bracket-side positioning convex portions are respectively inserted into the pair of second through holes 243f of the swing support springs 243. With this structure, the bracket 241 is supported on the first base 22 in such a manner that it can swing relative to the first base 22.

[0116] In addition, the outer ends of the protruding portions 241q, 241r of the bracket 241 in the Y direction are located at positions closer to the center in the Y direction than the both end surfaces of the first base 22 in the Y direction. Such a structure contributes to the miniaturization and light weight of the bracket 241.

[0117] [Front OIS actuator]

[0118] Refer to Figure 5 andFigure 8 Here, the front OIS actuator 244 that drives the optical path bending component will be described. The front OIS actuator 244 causes the bracket 241 to swing about the first axis. The first axis is an axis parallel to the Y direction. Specifically, the first axis refers to the axis parallel to the Y axis passing through the contact portion between the swing guide surfaces of the pair of swing guide members 245 and the spring-side guide surfaces 243h of the pair of swing support springs 243.

[0119] The front OIS actuator 244 is disposed on the back side (i.e., the Z direction - side) of the prism 23 and the bracket 241 so as to coincide with the optical path bending surface 231 of the prism 23 and the bracket 241 in the Z direction (i.e., the direction of the first optical axis). The front OIS actuator 244 includes a first magnet 244a, a first coil 244c, and a first Hall element 244e.

[0120] The first magnet 244a is fixed to the back side surface (i.e., the Z direction - side surface) of the bracket 241 which is a movable-side member. The first magnet 244a is composed of two magnet elements adjacent to each other in the X direction. Each of these magnet elements is magnetized in the Z direction and has one magnetic pole on one side. The orientations of the magnetic poles of each magnet element are opposite to each other.

[0121] The first coil 244c and the first Hall element 244e are fixed to the surface (i.e., the Z direction + side surface) of a flexible printed circuit board (hereinafter referred to as FPC (flexible printed circuit board)) 25, and the FPC 25 is fixed to the back side surface of the first base 22.

[0122] The first coil 244c and the first Hall element 244e are disposed in the base-side opening 220 of the first base 22. It should be noted that the first coil 244c is a so-called air-core coil having an oblong shape. The first Hall element 244e is disposed radially inside the first coil 244c.

[0123] The front OIS actuator 244 having the above structure swings the bracket 241 about the first axis under the control of the control unit 5 (refer to Figure 17A ).

[0124] Next, the lens module 3 will be described with reference to Figure 1 and Figures 9A to 23B .

[0125] [Lens Module]

[0126] The lens module 3 includes a second cover 31, a second base 32, a lens unit 33, an AF device 34, and a second shake correction device 35.

[0127] [Second Cover]

[0128] Reference Figure 1 、 Figure 9A and Figure 9B , the second cover 31 will be described. The second cover 31 is, for example, a box-shaped member made of synthetic resin or non-magnetic metal and open on both sides in the X direction and one side in the Z direction (i.e., the back side).

[0129] Specifically, the second cover 31 has a top plate portion 31a, a front plate portion 31b, a rear plate portion 31c, a first side plate portion 31d, and a second side plate portion 31e.

[0130] The top plate portion 31a is a rectangular plate member. Such a top plate portion 31a is disposed on the + side in the Z direction in the second cover 31. One end portion of the top plate portion 31a in the X direction (the end portion on the side of the prism module 2 (reference Figure 1 ), and is the end portion on the - side in the X direction) has a cutout portion 31f.

[0131] The cutout portion 31f is cut out from the end portion on the - side in the X direction of the top plate portion 31a toward the + side in the X direction. Such a cutout portion 31f is rectangular in shape and longer in the Y direction when viewed from above. A connection member 343d described later is disposed in such a cutout portion 31f.

[0132] The front plate portion 31b is a rectangular plate-like member that extends from the end portion on the - side in the X direction of the top plate portion 31a toward the - side in the Z direction. The front plate portion 31b has a front side opening portion 31g in a portion including the central portion. The front side opening portion 31g has a size that allows the end face on the - side in the X direction of the lens portion 33 to be exposed toward the - side in the X direction. The light from the prism module 2 enters the lens portion 33 through the front side opening portion 31g.

[0133] In addition, the front side opening portion 31g is continuous with the cutout portion 31f of the top plate portion 31a. Therefore, the edge portion on the + side in the Z direction of the front side opening portion 31g does not exist at the corner portion 31h formed by the top plate portion 31a and the front plate portion 31b. Such a structure facilitates the processing of the front side opening portion 31g.

[0134] The rear plate portion 31c is a rectangular plate-like member that extends from the end portion on the + side in the X direction of the top plate portion 31a toward the - side in the Z direction. The rear plate portion 31c has a rear side opening portion 31i in a portion including the central portion. The rear side opening portion 31i has a size that allows the end face on the + side in the X direction of the lens portion 33 to be exposed toward the + side in the X direction. The light from the lens portion 33 enters the imaging element module 4 through the rear side opening portion 31i.

[0135] The first side plate portion 31d is a plate-shaped member having a rectangular shape and extends from the end portion on the + side in the Y direction of the top plate portion 31a toward the - side in the Z direction. Further, the second side plate portion 31e is a plate-shaped member having a rectangular shape and extends from the end portion on the - side in the Y direction of the top plate portion 31a toward the - side in the Z direction. The second cover 31 as described above is assembled from the + side in the Z direction to a second base 32 described later.

[0136] [Second base]

[0137] Refer to Figure 9C 、 Figure 10 and Figures 18 to 22 , the second base 32 will be described. By combining with the above-described second cover 31, the second base 32 forms a second accommodation space 32c (refer to Figure 1 ) in which the lens unit 33, the AF device 34, and the second shake correction device 35 can be arranged.

[0138] The second base 32 is constituted by combining a lower base element 32a and an upper base element 32b.

[0139] The second base 32 has a bottom face portion 32d and a pair of second side wall portions 32g, 32h. The bottom face portion 32d has a base portion made of synthetic resin and a metal reinforcing plate 32k insert-molded on the base portion. Such a reinforcing plate 32k contributes to the high rigidity and thin-walling of the bottom face portion 32d.

[0140] The reinforcing plate 32k of the second base 32 is arranged at a position on the - side in the Z direction relative to a lens guide 341 described later so as to overlap the lens guide 341. Specifically, when the lens guide 341 is present at any position within the range movable during the autofocus operation (i.e., the range movable in the X direction) and the range movable during the shake correction operation (i.e., the range movable in the Y direction), the lens guide 341 is present on the + side in the Z direction of the reinforcing plate 32k. Therefore, the surface of the reinforcing plate 32k (i.e., the face on the + side in the Z direction) is always covered by the lens guide 341 and does not protrude. As a result, the reflected light reflected by the reinforcing plate 32k does not enter the lens unit 33 nor further enter the imaging element of the imaging element module 4 described later.

[0141] The second base 32 has bottom face through-holes 32e, 32f respectively in portions on both sides in the Y direction of the reinforcing plate 32k in the bottom face portion 32d (refer to Figure 18 、 Figure 19 ). As shown in Figure 21 and Figure 22 , a first AF coil 346b and a second AF coil 347b of an AF actuator 345 described later are respectively arranged in the bottom face through-holes 32e, 32f.

[0142] The second side wall portions 32g and 32h extend from both ends of the bottom surface portion 32d in the Y direction toward the + side in the Z direction. In the present embodiment, as Figure 20 shown, the second lower wall element 32a1 of the lower base element 32a and the second upper wall element 32b1 of the upper base element 32b are combined to form the second side wall portion 32g. Further, the second lower wall element 32a2 of the lower base element 32a and the second upper wall element 32b2 of the upper base element 32b are combined to form the second side wall portion 32h.

[0143] As Figure 21 and Figure 22 shown, the second side wall portions 32g and 32h respectively have coil mounting portions 32i and 32j. On such coil mounting portions 32i and 32j, the first OIS coil 352b and the second OIS coil 353b of the second shake correction device 35 described later are respectively mounted. In the present embodiment, the coil mounting portions 32i and 32j are provided on the upper surfaces of the second upper wall elements 32b1 and 32b2 of the upper base element 32b.

[0144] The coil mounting portion 32i is arranged between the first protruding portion 34a1 and the second protruding portion 34a3 of the lens guide 341 in the Z direction. Further, the coil mounting portion 32j is arranged between the first protruding portion 34a2 and the second protruding portion 34a4 of the lens guide 341 in the Z direction.

[0145] Further, as Figure 21 shown, between the coil mounting portion 32i and the bottom surface portion 32d, the first AF magnet 346a of the AF actuator 345 described later is arranged. Further, as Figure 22 shown, between the coil mounting portion 32j and the bottom surface portion 32d, the second AF magnet 347a of the AF actuator 345 is arranged. The first AF magnet 346a and the second AF magnet 347a are held by the lens guide 341 described later.

[0146] In the present embodiment, the bottom surface through holes 32e and 32f and the coil mounting portions 32i and 32j overlap with a predetermined interval in the Z direction. Therefore, the first AF coil 346b and the second AF coil 347b arranged in the bottom surface through holes 32e and 32f and the first OIS coil 352b and the second OIS coil 353b mounted on the coil mounting portions 32i and 32j overlap with a predetermined interval in the Z direction.

[0147] Further, the second side wall portion 32g has spring mounting portions 32m1 and 32m3 for arranging the springs 342a1 and 342a3 described later at both ends in the X direction of the side surface on the + side in the Y direction (refer to Figure 9C)。On the other hand, at both ends in the X direction of the side surface on the Y direction side of the second side wall portion 32h, there are spring arrangement portions 32m2 and 32m4 for arranging springs 342a2 and 342a4 described later (refer to Figure 10 ).

[0148] In addition, the second base 32 has a reference portion 32n at the end in the X direction + side. The reference portion 32n is a plate-like member provided at the end in the X direction + side of the second base 32. The side surface in the X direction + side of such a reference portion 32n is the reference surface in the X direction of the imaging element module 4 described later. On the other hand, the side surface in the X direction - side of the reference portion 32n has a first reference surface 32n1 which is the reference surface in the X direction of the lens guide 341 described later (refer to Figure 23B ). Such a first reference surface 32n1 is also the reference during calibration described later. The reference portion 32n has a through hole at the central portion for guiding the light that has passed through the lens portion 33 to the imaging element module 4. Such a reference portion 32n is a member for positioning the imaging element module 4.

[0149] [Lens portion]

[0150] The lens portion 33 is arranged in the second accommodation space 32c while being held by the lens guide 341 described later (refer to Figure 1 ). Such a lens portion 33, as Figures 9C to 12 shown, has a cylindrical lens barrel 33A and one or more lenses 33B held by the lens barrel 33A. As an example, the lens portion 33 has a telephoto lens group with an optical zoom of three times or more fixed between the end in the X direction - side of the lens barrel 33A and the end in the X direction + side of the lens barrel 33A. In addition, the structure of the lens portion 33 is not limited to the above structure.

[0151] [AF device]

[0152] Refer to Figures 9C to 17A , and the AF device 34 will be described. The AF device 34 is a driving portion, and for the purpose of autofocus, it displaces the lens portion 33 in the X direction. Specifically, the AF device 34 has a lens guide 341, a first support mechanism 342, a second support mechanism 343, an FPC 344, and an AF actuator 345.

[0153] [Lens guide]

[0154] Refer to Figures 11 to 13 , and the lens guide 341 will be described. Figure 11 is a view of the lens module 3 in a state where a part of the components is omitted as observed from the Y direction + side. Figure 12 is a view of the lens module 3 in a state where a part of the components is omitted as observed from the Y direction - side.Figure 13 This is a view of the lens module 3 in a state where the second base 32 is omitted, observed from one side in the X direction.

[0155] The lens guide 341 has a cylindrical lens holding portion 341a, a pair of first protruding portions 34a1 and 34a2, and a pair of second protruding portions 34a3 and 34a4. Such a lens guide 341 is disposed in the second accommodation space 32c in a state capable of displacement in the X direction (i.e., the direction of the second optical axis) and the Y direction.

[0156] The lens holding portion 341a has an accommodation space capable of holding the lens barrel 33A.

[0157] The pair of first protruding portions 34a1 and 34a2 are respectively arranged in such a state that they extend from two places on the outer peripheral surface of the cylindrical lens holding portion 341a in directions opposite to each other in the Y-axis direction.

[0158] The pair of second protruding portions 34a3 and 34a4 are respectively arranged in such a state that they extend from two places on the outer peripheral surface of the cylindrical lens holding portion 341a, which are closer to the +Z direction than the pair of first protruding portions 34a1 and 34a2, in directions opposite to each other in the Y-axis direction.

[0159] The first protruding portion 34a1 on one side (+Y direction) and the second protruding portion 34a3 on one side (+Y direction) overlap in the Z direction with a space 34b1 therebetween. The first protruding portion 34a2 on the other side (-Y direction) and the second protruding portion 34a4 on the other side (-Y direction) overlap in the Z direction with a space 34b2 therebetween.

[0160] The lens guide 341 has a first magnet holding portion 34a5 (see Figure 11 ) for holding the first AF magnet 346a of the AF actuator 345 described later and a first magnet holding portion 34a6 (see Figure 12 ) for holding the second AF magnet 347a. Specifically, the first magnet holding portions 34a5 and 34a6 are respectively provided on the pair of first protruding portions 34a1 and 34a2.

[0161] The first magnet holding portions 34a5 and 34a6 are respectively recesses opening to the -Z direction. Such first magnet holding portions 34a5 and 34a6 are respectively disposed on the -Z side of the pair of coil mounting portions 32i and 32j of the second base 32 (see Figure 21 and Figure 22 ). In addition, such a pair of first magnet holding portions 34a5 and 34a6 and the bottom surface through holes 32e and 32f of the second base 32 are provided on the same straight line parallel to the Z direction. The pair of first magnet holding portions 34a5 and 34a6 are provided at positions closer to the +Z direction than the bottom surface through holes 32e and 32f.

[0162] The lens guide 341 has a second magnet holding portion 34a7 (see Figure 11 ) that holds the first OIS magnet 352a of the rear OIS actuator 351 described later. In addition, the lens guide 341 has a second magnet holding portion 34a8 (see Figure 12 ) that holds the second OIS magnet 353a of the rear OIS actuator 351. Specifically, the second magnet holding portions 34a7 and 34a8 are respectively provided on a pair of second protruding portions 34a3 and 34a4.

[0163] The pair of second magnet holding portions 34a7 and 34a8 are respectively concave portions that are open on one side in the Z direction. Such a pair of second magnet holding portions 34a7 and 34a8, and the coil mounting portions 32i and 32j of the second base 32 are provided on the same straight line parallel to the Z direction. The pair of second magnet holding portions 34a7 and 34a8 are provided at positions closer to the + side in the Z direction than the coil mounting portions 32i and 32j.

[0164] Near the first magnet holding portion 34a5, the lens guide 341 has a third magnet holding portion 34b3 (see Figure 11 ) that holds the first X position detection magnet 346d of the AF actuator 345. In addition, near the first magnet holding portion 34a6, the lens guide 341 has a third magnet holding portion 34b4 (see Figure 12 ) that holds the second X position detection magnet 347d of the AF actuator 345.

[0165] Specifically, the third magnet holding portions 34b3 and 34b4 are respectively provided at positions on a pair of first protruding portions 34a1 and 34a2 that are closer to the - side in the X direction than the first magnet holding portions 34a5 and 34a6. In addition, for the positions of the third magnet holding portions 34b3 and 34b4, as long as they are near the first magnet holding portions 34a5 and 34a6, they are not limited to the above positions.

[0166] Near the first magnet holding portions 34a5 and 34a6, the lens guide 341 has a pair of fourth magnet holding portions 34b5 and 34b6 (see Figure 11 and Figure 12 ) that hold the Y position detection magnets 352c and 353c of the rear OIS actuator 351. Specifically, the pair of fourth magnet holding portions 34b5 and 34b6 are respectively provided at positions on a pair of first protruding portions 34a1 and 34a2 that are closer to the + side in the X direction than the first magnet holding portions 34a5 and 34a6. In addition, for the positions of the pair of fourth magnet holding portions 34b5 and 34b6, as long as they are near the first magnet holding portions 34a5 and 34a6, they are not limited to the above positions.

[0167] The lens guide 341 has a plurality of (six in this embodiment) ball holding portions 343a that hold a plurality of balls 343e of the second support mechanism 343 described later (refer to Figure 10 ). Specifically, three of these ball holding portions 343a are provided on the + side surface in the Z direction of each of the pair of second protruding portions 34a3 and second protruding portion 34a4.

[0168] In a state where the lens guide 341 is displaced maximally in the +X direction, the end surface on the +X side of the lens guide 341 (hereinafter referred to as the "lens guide side reference surface") abuts against the first reference surface 32n1 of the reference portion 32n.

[0169] The lens guide side reference surface of the lens guide 341 and the first reference surface 32n1 are flat surfaces parallel to the YZ plane. Therefore, in a state where the lens guide side reference surface of the lens guide 341 abuts against the first reference surface 32n1 (surface contact), the lens guide 341 is in a state of not being inclined in the Y direction and the Z direction with respect to the X direction (i.e., the direction of the second optical axis) (hereinafter referred to as the "reference state of the lens guide 341").

[0170] [First Support Mechanism]

[0171] Refer to Figures 9C to 12 and Figure 14 , the first support mechanism 342 will be described. The first support mechanism 342 elastically supports the lens guide 341 on the second base 32 in a state where the lens guide 341 can be displaced relative to the second base 32. Such a first support mechanism 342 is also referred to as an elastic support mechanism.

[0172] The first support mechanism 342 has a plurality of (four in this embodiment) springs 342a1 to 342a4 that are respectively elastic support members. The springs 342a1 to 342a4 elastically support the lens guide 341 on the second base 32. In this state, the lens unit 33 can be displaced in the X direction and the Y direction relative to the second base 32. In addition, the displacement of the lens guide 341 in the Z direction relative to the second base 32 is restricted within a specified range by the first support mechanism 342. The specified range refers to the range in which the lens guide 341 can be displaced based on the elastic deformation of the springs 342a1 to 342a4.

[0173] The spring 342a1 supports the end portion on the +X side and +Y side of the lens guide 341 on the second base 32 (refer to Figure 9C ). The spring 342a2 supports the end portion on the +X side and -Y side of the lens guide 341 on the second base 32 (refer to Figure 10)。The spring 342a3 supports the end portion on the - side in the X direction and the + side in the Y direction of the lens guide 341 on the second base 32 (see Figure 9C )。Also, the spring 342a4 supports the end portion on the - side in the X direction and the - side in the Y direction of the lens guide 341 on the second base 32 (see Figure 10 )。

[0174] As Figure 14 shown, the springs 342a1 to 342a4 each have a first fixing portion 342b, a second fixing portion 342c, and a connecting portion 342d. In addition, Figure 14 the springs 342a1 to 342a4 represent the configurations maintaining the assembled state.

[0175] The first fixing portion 342b is fixed to the lens guide 341 which is a movable - side member. The second fixing portion 342c is fixed to the second base 32 which is a fixed - side member.

[0176] The connecting portion 342d connects the first fixing portion 342b and the second fixing portion 342c. The connecting portion 342d is constituted by, for example, a linear member at least a part of which is bent (specifically, bent and formed into a meandering shape).

[0177] Specifically, the connecting portion 342d has a first bending portion 342e and a second bending portion 342f in order from the + side in the Z direction. The springs 342a1 to 342a4 are respectively arranged in the spring arrangement portions 32m1 to 32m4 of the second base 32 (see Figure 9C and Figure 10 )。

[0178] The first bending portion 342e is a portion bent into a meandering shape and is provided at one end portion (the end portion on the + side in the Z direction) of the connecting portion 342d. When the lens unit 33 is displaced in the Z direction with respect to the second base 32, such a first bending portion 342e elastically deforms in the length direction (Z direction) of the connecting portion 342d.

[0179] It should be noted that the position of the first bending portion 342e is not limited to the position of the present embodiment. Preferably, the first bending portion 342e is provided at half of one side of the connecting portion 342d (that is, half of the first fixing portion 342b side). Additionally, more preferably, the first bending portion 342e is provided at one end portion of the connecting portion 342d as in the present embodiment. Although not shown, in the assembled state, the first bending portions 342e may be respectively covered with gel - like vibration - damping members.

[0180] The second bending portion 342f is a linear member that is provided at the other end portion (the end portion on the Z-direction side) of the connecting portion 342d and is bent in a meandering shape. When the lens portion 33 is displaced in the Z direction with respect to the second base 32, the second bending portion 342f elastically deforms in the longitudinal direction (Z direction) of the connecting portion 342d. The displacement amount of the second bending portion 342f when the lens portion 33 is displaced in the Z direction with respect to the second base 32 is smaller than the displacement amount of the first bending portion 342e.

[0181] In addition, when the lens portion 33 is displaced in the X direction with respect to the second base 32, the connecting portion 342d is displaced in a manner that swings about a fulcrum near the end portion on the side of the second fixing portion 342c. Therefore, the portion of the connecting portion 342d that is farther from the fulcrum (in other words, closer to the first fixing portion 342b) has a larger displacement amount when the lens portion 33 is displaced in the X direction with respect to the second base 32.

[0182] It should be noted that the position of the second bending portion 342f is not limited to the position in the present embodiment. Preferably, the second bending portion 342f is provided in the other half (that is, the half on the side of the second fixing portion 342c) of the connecting portion 342d. Additionally, more preferably, the second bending portion 342f is provided at the other end portion of the connecting portion 342d as in the present embodiment. Further, in the present embodiment, the second bending portion 342f may be omitted. That is, the connecting portion 342d may also have a structure with a bending portion only at one location. Furthermore, although not shown in the drawings, the second bending portion 342f may also be covered with a gel-like vibration damping member respectively.

[0183] In the present embodiment, the connecting portion 342d has a directionality in the X direction. The spring 342a1 and the spring 342a2 are arranged in such a way that they face the same direction in the X direction. In other words, the spring 342a1 and the spring 342a2 are arranged, for example, in such a way that at least the connecting portion 342d coincides when viewed from the + side in the Y direction.

[0184] The spring 342a3 and the spring 342a4 are arranged in such a way that they face the same direction in the X direction. In other words, the spring 342a3 and the spring 342a4 are arranged, for example, in such a way that at least the connecting portion 342d coincides when viewed from the + side in the Y direction.

[0185] The spring 342a1 and the spring 342a3 are arranged such that the connecting portion 342d faces the same direction in the X direction. The spring 342a2 and the spring 342a4 are arranged such that the connecting portion 342d faces the same direction in the X direction. However, as a modification example, the spring 342a1 and the spring 342a3 may also have a line-symmetric relationship with the Z axis as the axis of symmetry of the connecting portion 342d when viewed in the Y direction. Similarly, regarding the spring 342a2 and the spring 342a4, they may also have a line-symmetric relationship with the Z axis as the axis of symmetry of the connecting portion 342d when viewed in the Y direction. Preferably, in such a modification example, the spring 342a1 and the spring 342a2, and the spring 342a3 and the spring 342a4 are also arranged to face the same direction in the X direction.

[0186] In addition, in the present embodiment, as Figure 14 shown, for example, when the straight line connecting the centers of the spring 342a1 and the spring 342a4 arranged at the diagonal positions of the lens guide 341 when viewed from the + side in the Z direction is set as the straight line L1, and the straight line connecting the centers of the spring 342a2 and the spring 342a3 is set as the straight line L2, the intersection point of the straight line L1 and the straight line L2 (also referred to as the center position of the distributed arrangement.) coincides with or is substantially consistent with the center of gravity G of the movable-side member at the reference position described later.

[0187] In addition, the movable-side member refers to the lens guide 341 and each member fixed to the lens guide 341 and capable of being displaced together with the lens guide 341. Specifically, in the present embodiment, the movable-side member is configured to include the lens guide 341, the lens unit 33, the first AF magnet 346a and the second AF magnet 347a of the AF actuator 345, and the first OIS magnet 352a and the second OIS magnet 353a of the rear-side OIS actuator 351, etc.

[0188] The centers of the respective springs 342a1 to 342a4 are, for example, the central positions in the Z direction and the central positions in the X direction of the respective springs 342a1 to 342a4. In addition, the reference position of the lens guide 341 refers to a state in which the lens guide 341 is not displaced in the X direction through the autofocus function and is not displaced in the Y direction through the second shake correction device 35 described later. With such a structure, it is possible to reduce the resonance of the lens guide 341 around the straight line L3 passing through the center of gravity G of the above-mentioned movable-side member and parallel to the Z direction.

[0189] In addition, the respective springs 342a1 to 342a4 as described above are arranged as follows. When the straight line passing through the center of gravity G and parallel to the direction of the second optical axis (i.e., the X direction) is set as the straight line L4 (refer to Figure 14In the case of Figure 14 , a pair of springs 342a1 and 342a2 on the +X side are arranged at two positions that are symmetric with respect to the straight line L4 and are separated from the center of gravity G by a specified distance in the +X direction ( Figure 14 to the right side). On the other hand, a pair of springs 342a3 and 342a4 on the -X side are arranged at two positions that are symmetric with respect to the straight line L4 and are separated from the center of gravity G by the above-mentioned specified distance in the -X direction (

[0190] [Second support mechanism]

[0191] Refer to Figures 9A to 13 to describe the second support mechanism 343. The second support mechanism 343 supports the lens guide 341 on the second base 32 in a state where the lens guide 341 can be displaced in the XY plane with respect to the second base 32. However, the second support mechanism 343 supports the lens guide 341 on the second base 32 in a state where the displacement of the lens guide 341 in the Z direction with respect to the second base 32 is restricted. Specifically, the second support mechanism 343 supports the lens guide 341 on the second base 32 in a state where the lens guide 341 cannot be displaced in the +Z direction with respect to the second base 32.

[0192] The second support mechanism 343 includes a plurality of ball holders 343a, a pair of rail members 343b1 and 343b2, a connecting member 343d, and a plurality of balls 343e.

[0193] The plurality of ball holders 343a are provided on the +Z side surfaces of the second protruding portions 34a3 and 34a4 of the lens guide 341. In the present embodiment, three ball holders 343a are provided on the +Z side surfaces of the second protruding portion 34a3 and the second protruding portion 34a4, respectively.

[0194] The pair of rail members 343b1 and 343b2 are, for example, plate-like members parallel to the XY plane. Such a pair of rail members 343b1 and 343b2 are made of a magnetic metal such as an iron-based alloy.

[0195] The rail member 343b1 arranged on the +Y side is arranged on the same straight line parallel to the Z direction as the first OIS magnet 352a. In addition, the rail member 343b1 is arranged at a position closer to the +Z side than the first OIS magnet 352a.

[0196] In addition, the rail member 343b2 disposed on one side in the Y direction and the second OIS magnet 353a are arranged on the same straight line parallel to the Z direction. In addition, the rail member 343b2 is disposed at a position closer to the + side in the Z direction than the second OIS magnet 353a.

[0197] With such an arrangement, the first OIS magnet 352a is attracted in the direction approaching the rail member 343b1 (i.e., the + side in the Z direction) based on its own magnetic force.

[0198] In addition, the second OIS magnet 353a is attracted in the direction approaching the rail member 343b2 (i.e., the + side in the Z direction) based on its own magnetic force.

[0199] The forces acting on the first OIS magnet 352a and the second OIS magnet 353a and between the rail member 343b1 and the rail member 343b2, for example, in the case where the springs 342a1 to 342a4 are omitted (i.e., in the case of the second embodiment described later), can lift the movable side member from the fixed side member (the second base 32).

[0200] Specifically, the pair of rail members 343b1 and 343b2 are respectively disposed at positions closer to the + side in the Z direction than the second protruding portions 34a3 and 34a4 of the lens guide 341, and are arranged in a state of facing the + side surfaces of the second protruding portions 34a3 and 34a4 in the Z direction.

[0201] The pair of rail members 343b1 and 343b2 each have a flat rail surface 343c on the surface on the - side in the Z direction (see Figure 11 and Figure 12 ). The rail surfaces 343c respectively face the + side surfaces of the second protruding portions 34a3 and 34a4 in the Z direction.

[0202] The ends of the pair of rail members 343b1 and 343b2 on the - side in the X direction are connected to each other by a connecting member 343d. The connecting member 343d is disposed in the cutout portion 31f of the top plate portion 31a in the second cover 31 (see Figure 9A and Figure 9C ). In this state, the connecting member 343d covers the entire cutout portion 31f. Thereby, the connecting member 343d prevents light from entering the lens portion 33 from the cutout portion 31f. In addition, the connecting member 343d is fixed to the second cover 31. Since the second cover 31 is fixed to the second base 32, the connecting member 343d and the pair of rail members 343b1 and 343b2 are fixed to the second base 32 through the second cover 31.

[0203] A plurality of balls 343e are respectively held by a plurality of ball holding parts 343a. In such a held state, the plurality of balls 343e are arranged in a rotatable state between the inner surface of the plurality of ball holding parts 343a and the raceway surfaces 343c of a pair of raceway members 343b1 and 343b2. The plurality of balls 343e are respectively in contact with the inner surface of the plurality of ball holding parts 343a and the raceway surfaces 343c of the pair of raceway members 343b1 and 343b2.

[0204] [FPC]

[0205] Refer to Figures 15 to 17A , Figure 21 and Figure 22 , the FPC 344 will be described. The FPC 344 is a flexible printed circuit board and is fixed to the second base 32 (refer to Figure 9C and Figure 10 ).

[0206] The FPC 344 has: an FPC base portion 344a, a first terminal portion 34d1, a second terminal portion 34d2, a third terminal portion 34d3, a first coil fixing portion 34d4, a second coil fixing portion 34d5, a first controller fixing portion 34d6, a second controller fixing portion 34d7, a Hall element fixing portion 34d8, and an AF drive control circuit 344b (refer to Figure 17A ).

[0207] The FPC base portion 344a is a plate-like member parallel to the XY plane and is fixed to the second base 32 (refer to Figure 9C and Figure 10 ).

[0208] The first terminal portion 34d1 and the second terminal portion 34d2 respectively extend from two locations spaced apart in the Y direction at the end portion on the + side in the X direction of the FPC base portion 344a, toward the + side in the Z direction. The first terminal portion 34d1 is electrically connected to the first OIS coil 352b. On the other hand, the second terminal portion 34d2 is electrically connected to the second OIS coil 353b.

[0209] The third terminal portion 34d3 is connected to the sensor substrate 6 ( Figure 17A ) to which the imaging element module 4 is mounted. As shown in Figure 17A , the third terminal portion 34d3 has: a power supply terminal T1, a ground terminal T2, a data signal terminal T3, a first clock terminal T4, and a second clock terminal T5. In a state where the FPC 344 is connected to the sensor substrate 6, the respective terminals of such a third terminal portion 34d3 are respectively connected to the corresponding terminals in the substrate-side circuit 6a of the sensor substrate 6.

[0210] The first coil fixing part 34d4 and the second coil fixing part 34d5 are respectively arranged at positions on the +Z side surface of the FPC base 344a that are opposed to the first magnet holding parts 34a5 and 34a6 of the lens guide 341 in the Z direction. Specifically, the first coil fixing part 34d4 and the second coil fixing part 34d5 are separately provided on the +Z side surface of the FPC base 344a, on one side in the Y direction (Y direction + side) and the other side in the Y direction (Y direction - side) centered on the second optical axis.

[0211] The first AF coil 346b and the second AF coil 347b are respectively fixed on such first coil fixing part 34d4 and second coil fixing part 34d5. The first coil fixing part 34d4 and the second coil fixing part 34d5 are respectively arranged in the bottom through holes 32e, 32f of the second base 32 (refer to Figure 18 , Figure 19 ).

[0212] The first controller fixing part 34d6 and the second controller fixing part 34d7 are respectively arranged near the first coil fixing part 34d4 and the second coil fixing part 34d5 on the +Z side surface of the FPC base 344a. Specifically, the first controller fixing part 34d6 and the second controller fixing part 34d7 are respectively arranged near positions on the +Z side surface of the FPC base 344a that are more on the -X side than the first coil fixing part 34d4 and the second coil fixing part 34d5.

[0213] The first AF controller 346c and the second AF controller 347c are respectively fixed on such first controller fixing part 34d6 and second controller fixing part 34d7.

[0214] The Hall element fixing part 34d8 is arranged at a position on the +Z side surface of the FPC base 344a that is opposed to the fourth magnet holding part 34b6 of the lens guide 341 in the Z direction (refer to Figure 12 ). The OIS Hall element 353d of the rear OIS actuator 351 described later is fixed on the Hall element fixing part 34d8.

[0215] As Figure 17A shown, the AF drive control circuit 344b has: a first power supply line L1, a second power supply line L2, a first ground line L3, a second ground line L4, a first data signal line L5, a second data signal line L6, a first clock line L7, a second clock line L8, first coil power supply lines L9, L10, and second coil power supply lines L11, L12.

[0216] The first power supply line L1 is a transmission line for the current supplied from the control unit 5 mounted on the sensor substrate 6 to the first AF controller 346c. One end of the first power supply line L1 is connected to the power supply terminal T1 of the third terminal portion 34d3. The other end of the first power supply line L1 is connected to the input-side power supply terminal (not shown) of the first AF controller 346c.

[0217] The second power supply line L2 is a transmission line for the current supplied from the control unit 5 mounted on the sensor substrate 6 to the second AF controller 347c. One end of the second power supply line L2 is connected to the power supply terminal T1 of the third terminal portion 34d3. The other end of the second power supply line L2 is connected to the power input terminal (not shown) of the second AF controller 347c. As described above, the first power supply line L1 and the second power supply line L2 branch midway.

[0218] The first ground line L3 is a transmission line for grounding. One end of the first ground line L3 is connected to the ground terminal T2 of the third terminal portion 34d3. The other end of the first ground line L3 is connected to the ground terminal (not shown) of the first AF controller 346c.

[0219] The second ground line L4 is a transmission line for grounding. One end of the second ground line L4 is connected to the ground terminal T2 of the third terminal portion 34d3. The other end of the second ground line L4 is connected to the ground terminal (not shown) of the second AF controller 347c. The first ground line L3 and the second ground line L4 branch midway.

[0220] The first data signal line L5 is a transmission line for the control signal between the control unit 5 and the first AF controller 346c. One end of the first data signal line L5 is connected to the data signal terminal T3 of the third terminal portion 34d3. The other end of the first data signal line L5 is connected to the input-side data signal terminal (not shown) of the first AF controller 346c.

[0221] The second data signal line L6 is a transmission line for the control signal between the control unit 5 and the second AF controller 347c. One end of the second data signal line L6 is connected to the data signal terminal T3 of the third terminal portion 34d3. The other end of the second data signal line L6 is connected to the input-side data signal terminal (not shown) of the second AF controller 347c. The first data signal line L5 and the second data signal line L6 branch midway.

[0222] The first AF controller 346c and the second AF controller 347c can operate alternately at a specified time interval based on the control signal received from the control unit 5. In other words, the control unit 5 can send control signals to the first AF controller 346c and the second AF controller 347c in such a way that the first AF controller 346c and the second AF controller 347c operate alternately at a specified time interval.

[0223] For example, it can be that the control unit 5 simultaneously sends control signals to the first AF controller 346c and the second AF controller 347c. The control unit 5 can send control signals at a specified time interval. Such control signals can include information indicating the operation of either the first AF controller 346c or the second AF controller 347c (hereinafter referred to as the "target controller").

[0224] It can be that the first AF controller 346c and the second AF controller 347c analyze the information indicating the above operation included in the control signals received from the control unit 5, and when itself is the target controller, perform operations based on the control signals.

[0225] In addition, for example, it can be that the control unit 5 alternately sends control signals to the first AF controller 346c and the second AF controller 347c at a specified time interval. The controller among the first AF controller 346c and the second AF controller 347c that receives the control signal from the control unit 5 can perform operations based on the received control signal.

[0226] The first clock line L7 is a transmission line for clock signals between the control unit 5 and the first AF controller 346c. One end of the first clock line L7 is connected to the first clock terminal T4 of the third terminal portion 34d3. The other end of the first clock line L7 is connected to the clock terminal (not shown) of the first AF controller 346c.

[0227] The second clock line L8 is a transmission line for clock signals between the control unit 5 and the second AF controller 347c. One end of the second clock line L8 is connected to the second clock terminal T5 of the third terminal portion 34d3. The other end of the second clock line L8 is connected to the clock terminal (not shown) of the second AF controller 347c.

[0228] The first coil power supply lines L9 and L10 are transmission lines connecting the first AF controller 346c and the first AF coil 346b.

[0229] One end of the first coil power supply line L9 is connected to the first terminal (not shown) among the output-side power supply terminals of the first AF controller 346c. The other end of the first coil power supply line L9 is connected to one end of the first AF coil 346b.

[0230] One end of the first coil power supply line L10 is connected to the second terminal (not shown) among the output-side power supply terminals of the first AF controller 346c. The other end of the first coil power supply line L10 is connected to the other end of the first AF coil 346b.

[0231] The second coil power supply lines L11 and L12 are transmission lines connecting the second AF controller 347 c and the second AF coil 347 b .

[0232] One end of the second coil power supply line L11 is connected to a first terminal (not shown) of the output side power supply terminal of the second AF controller 347c, and the other end of the second coil power supply line L11 is connected to one end of the second AF coil 347b.

[0233] One end of the second coil power supply line L12 is connected to a second terminal (not shown) of the output side power supply terminal of the second AF controller 347c, and the other end of the second coil power supply line L12 is connected to the other end of the second AF coil 347b.

[0234] The AF drive control circuit 344b as described above is connected to the sensor substrate 6 via the third terminal portion 34d3. Thus, the first AF controller 346c and the second AF controller 347c are connected to the control unit 5 mounted on the sensor substrate 6.

[0235] [AF actuator]

[0236] Reference Figure 11 , Figure 12 , Figure 16 as well as Figure 17A Next, the AF actuator 345 will be described. The AF actuator 345 is a driving mechanism that displaces the lens guide 341 in the X direction (the direction of the second optical axis) during automatic focusing.

[0237] The AF actuator 345 includes a first AF actuator 346 disposed on the + side in the Y direction and a second AF actuator 347 disposed on the - side in the Y direction.

[0238] The first AF actuator 346 is a driving mechanism portion, and includes a first AF magnet 346 a , a first AF coil 346 b , a first X position detection magnet 346 d , and a first AF controller 346 c .

[0239] The second AF actuator 347 is a driving mechanism portion, and includes a second AF magnet 347 a , a second AF coil 347 b , a second X position detection magnet 347 d , and a second AF controller 347 c .

[0240] Such first AF actuator 346 and second AF actuator 347 are moving magnet type actuators in which first AF magnet 346a and second AF magnet 347a are fixed to lens guide 341 as a movable side member and first AF coil 346b and second AF coil 347b are fixed to second base 32 as a fixed side member.

[0241] In addition, the first AF actuator 346 and the second AF actuator 347 may also be voice coil actuators. Hereinafter, the configuration of each part constituting the AF actuator 345 will be described.

[0242] The first AF magnet 346a and the second AF magnet 347a are respectively held by the first magnet holding portions 34a5 and 34a6 of the lens guide 341. In this state, the first AF magnet 346a and the second AF magnet 347a are respectively disposed on the + side in the Z direction of a pair of coil mounting portions 32i and 32j of the second base 32 (refer to Figure 9C and Figure 10 ). In the present embodiment, the first AF magnet 346a and the second AF magnet 347a are each composed of two magnet elements (reference numerals omitted) arranged side by side in the Y direction. These magnet elements are magnetized in the Z direction and are arranged such that the polar orientations are opposite.

[0243] In addition, the first AF magnet 346a and the second AF magnet 347a are each long in the X direction and, for example, have a substantially rectangular parallelepiped shape when viewed along the Y direction (in the state shown in Figure 11 and Figure 12 ).

[0244] The first AF coil 346b and the second AF coil 347b are so-called air-core coils having an oval shape that are energized during autofocus. The first AF coil 346b and the second AF coil 347b are respectively fixed to the first coil fixing portion 34d4 and the second coil fixing portion 34d5 of the FPC 344 with their major axes aligned with the Y direction through a substrate (not shown).

[0245] As shown in Figure 17A , the first AF coil 346b is connected to the first AF controller 346c through the first coil power supply lines L9 and L10. The current value of the first AF coil 346b is controlled by the first AF controller 346c.

[0246] The first X-position detection magnet 346d and the second X-position detection magnet 347d are magnetized in the Z direction and, for example, have a substantially rectangular parallelepiped shape when viewed along the Y direction (in the state shown in Figure 11 and Figure 12 ). Such first X-position detection magnets 346d and second X-position detection magnets 347d are respectively held by a pair of third magnet holding portions 34b3 and 34b4 of the lens guide 341.

[0247] The first AF controller 346c is fixed to the first controller fixing portion 34d6 of the FPC 344. As shown in Figure 17AAs shown, such a first AF controller 346c includes a first detection unit 346e and a first drive control unit 346f.

[0248] The first detection unit 346e detects the magnetic flux between the first AF magnet 346a and the first X-position detection magnet 346d (also referred to as position-related information). The first detection unit 346e transmits the detection value to the first drive control unit 346f.

[0249] Based on the detection value received from the first detection unit 346e, the first drive control unit 346f obtains the position of the first AF magnet 346a in the X direction (also referred to as the first position). Moreover, based on the detection value received from the first detection unit 346e, the first drive control unit 346f controls the current value of the first AF coil 346b. In addition, the first AF controller 346c does not perform control related to the current value of the second AF coil 347b.

[0250] As described above, in the first AF actuator 346, closed-loop control is performed based on the detection value of the first detection unit 346e. In addition, the first drive control unit 346f can be omitted. In this case, the processing performed by the first drive control unit 346f can also be performed by the control unit 5 mounted on the sensor substrate 6, for example.

[0251] In addition, the second AF controller 347c is fixed to the second controller fixing portion 34d7 of the FPC 344. As Figure 17A shown, such a second AF controller 347c includes a second detection unit 347e and a second drive control unit 347f.

[0252] The second detection unit 347e detects the magnetic flux between the second AF magnet 347a and the second X-position detection magnet 347d (also referred to as position-related information). The second detection unit 347e transmits the detection value to the second drive control unit 347f.

[0253] Based on the detection value (position-related information) received from the second detection unit 347e, the second drive control unit 347f obtains the position of the second AF magnet 347a in the X direction (also referred to as the second position). In addition, based on the detection value received from the second detection unit 347e, the second drive control unit 347f controls the current value of the second AF coil 347b. Moreover, the second AF controller 347c does not perform control related to the current value of the first AF coil 346b.

[0254] As described above, in the second AF actuator 347, closed-loop control is performed based on the detection value of the second AF controller 347c. In addition, the second drive control unit 347f may be omitted. In this case, the processing performed by the second drive control unit 347f may also be performed by the control unit 5 mounted on the sensor substrate 6, for example.

[0255] In the first AF actuator 346 and the second AF actuator 347 having the above-described structure, when currents flow through the first AF coil 346b and the second AF coil 347b under the control of the first AF controller 346c and the second AF controller 347c, a Lorentz force (thrust force) is generated that displaces the first AF magnet 346a and the second AF magnet 347a in the X direction.

[0256] By controlling the directions of the currents flowing through the first AF coil 346b and the second AF coil 347b, such thrust force is switched. Thereby, the displacement direction of the lens guide 341 can be switched.

[0257] In the structure of the present embodiment, by independently controlling the current values of the first AF coil 346b of the first AF actuator 346 and the second AF coil 347b of the second AF actuator 347, the thrust force generated by the first AF actuator 346 can be made different from the thrust force generated by the second AF actuator 347.

[0258] Specifically, when the thrust force generated by the first AF actuator 346 is the same as the thrust force generated by the second AF actuator 347, the thrust force generated by the AF actuator 345 consists only of the first thrust force in the X direction. On the other hand, when the thrust force generated by the first AF actuator 346 is different from the thrust force generated by the second AF actuator 347, the thrust force generated by the AF actuator 345 has the first thrust force in the X direction and the second thrust force as a moment about the center of gravity G of the movable-side member.

[0259] Such a second thrust force becomes a resistance force against an external force that causes the lens guide 341 to deviate from the X direction during autofocus. Thereby, during autofocus, the AF actuator 345 can reduce or make zero the amount by which the lens guide 341 deviates from the X direction. In addition, the above-mentioned external force will be described later.

[0260] In addition, in the present embodiment, the AF actuator 345 is also a second drive mechanism unit that generates a resistance force when the second shake correction device 35 described later performs shake correction, and this resistance force counteracts an external force that acts to cause the movable-side member (lens guide 341) to deviate from the Y direction.

[0261] That is, when the AF actuator 345 performs jitter correction by the second jitter correction device 35 described below, the positions of the first AF magnet 346a and the second AF magnet 347a in the X direction are detected by the first AF controller 346c and the second AF controller 347c.

[0262] Moreover, the first AF controller 346c and the second AF controller 347c respectively control the current values of the first AF coil 346b and the second AF coil 347b based on the detection values. Thereby, when the second jitter correction device 35 performs jitter correction, the AF actuator 345 generates a resistance against the external force that causes the lens guide 341 to deviate from the Y direction. As a result, when performing jitter correction, the AF actuator 345 can reduce or make zero the amount by which the lens guide 341 deviates from the Y direction.

[0263] [Modified Example of AF Actuator]

[0264] Figure 17B FIG. is a circuit diagram of an AF drive control circuit of an AF actuator 345A including a modified example 1 of the AF actuator 345. The AF actuator 345A has a first AF actuator 346A disposed on the + side in the Y direction and a second AF actuator 347A disposed on the - side in the Y direction.

[0265] The first AF actuator 346A is a drive mechanism unit and has a first AF magnet 346a, a first AF coil 346b, a first X position detection magnet 346d (refer to Figure 11 ), a first detection unit 346e2, and a first AF controller 346c2.

[0266] The second AF actuator 347A is a drive mechanism unit and has: a second AF magnet 347a, a second AF coil 347b, a second X position detection magnet 347d (refer to Figure 12 ), a second detection unit 347e2, and a second AF controller 347c2.

[0267] In the first AF actuator 346A, the first AF magnet 346a, the first AF coil 346b, and the first X position detection magnet 346d (refer to Figure 11 ) are the same as those of the first AF actuator 346 described above. In addition, in the second AF actuator 347A, the second AF magnet 347a, the second AF coil 347b, and the second X position detection magnet 347d (refer to Figure 12 ) are the same as those of the second AF actuator 347 described above.

[0268] The first detection unit 346e2 is provided independently of the first AF controller 346c2. Specifically, the first detection unit 346e2 is fixed to the FPC 344B. The function of the first detection unit 346e2 is the same as that of the aforementioned first detection unit 346e. In addition, the FPC 344B has substantially the same structure as the aforementioned FPC 344.

[0269] On the other hand, the first AF controller 346c2 is provided on the sensor substrate 6B. The first AF controller 346c2 has a first drive control unit 346f. The first drive control unit 346f is the same as the aforementioned first AF actuator 346. The first drive control unit 346f and the first detection unit 346e2 are connected by a signal line L13. The first detection unit 346e2 detects the magnetic flux between the first AF magnet 346a and the first X-position detection magnet 346d (also referred to as position-related information). The first detection unit 346e2 transmits the detection value to the first drive control unit 346f.

[0270] The second detection unit 347e2 is provided independently of the second AF controller 347c2. Specifically, the second detection unit 347e2 is fixed to the FPC 344B. The function of the second detection unit 347e2 is the same as that of the aforementioned second detection unit 347e.

[0271] On the other hand, the second AF controller 347c2 is provided on the sensor substrate 6B. The second AF controller 347c2 has a second drive control unit 347f. The second drive control unit 347f is the same as the aforementioned second AF actuator 347. The second drive control unit 347f and the second detection unit 347e2 are connected by a signal line L14. The second detection unit 347e2 detects the magnetic flux between the second AF magnet 347a and the second X-position detection magnet 347d (also referred to as position-related information). The second detection unit 347e2 transmits the detection value to the second drive control unit 347f. The structure, function, and effect of the other AF actuator 345A are the same as those of the aforementioned AF actuator 345.

[0272] [Second jitter correction device]

[0273] Refer to Figure 11 、 Figure 12 and Figure 16 , the second jitter correction device 35 will be described. The second jitter correction device 35 is a drive unit that performs jitter correction in the Y direction by displacing the lens unit 33 in the Y direction. Such a second jitter correction device 35 is arranged in the aforementioned second accommodation space 32c (refer to Figure 1 ).

[0274] The second jitter correction device 35 includes: the above-described lens guide 341, the above-described plurality of springs 342a1 to 342a4, the above-described FPC 344, and the rear OIS actuator 351.

[0275] The lens guide 341, the springs 342a1 to 342a4, and the FPC 344 are common to the AF device 34.

[0276] The rear OIS actuator 351 is a drive mechanism, and includes a first OIS actuator 352 disposed on the + side in the Y direction and a second OIS actuator 353 disposed on the - side in the Y direction.

[0277] As Figure 11 shown, the first OIS actuator 352 is a drive mechanism portion, and is disposed in a state of being overlapped with the first AF actuator 346 with a predetermined interval in the Z direction. Such a first OIS actuator 352 includes a first OIS magnet 352a, a first OIS coil 352b, and a Y position detection magnet 352c.

[0278] As Figure 12 shown, the second OIS actuator 353 is a drive mechanism portion, and is disposed in a state of being overlapped with the second AF actuator 347 with a predetermined interval in the Z direction. Such a second OIS actuator 353 includes a second OIS magnet 353a, a second OIS coil 353b, a Y position detection magnet 353c, and an OIS Hall element 353d.

[0279] By disposing the first OIS actuator 352 and the second OIS actuator 353, and the first AF actuator 346 and the second AF actuator 347 as described above, the center of the driving force of the rear OIS actuator 351 coincides with or is close to the center of the driving force of the AF actuator 345. With this structure, during autofocus and jitter correction, the lens guide 341 is less likely to tilt and displace (that is, swing displacement about an axis parallel to the Y direction or the Z direction).

[0280] The rear OIS actuator 351 as described above is a moving magnet type actuator: the first OIS magnet 352a and the second OIS magnet 353a are fixed to the lens guide 341 as a movable side member, and the first OIS coil 352b and the second OIS coil 353b are fixed to the second base 32 as a fixed side member. However, the rear OIS actuator 351 may also be a moving coil type actuator.

[0281] The first OIS magnet 352a and the second OIS magnet 353a are respectively held by a second magnet holding portion 34a7 and a second magnet holding portion 34a8 of the lens guide 341.

[0282] In the present embodiment, the first OIS magnet 352a and the second OIS magnet 353a are each composed of two magnet elements (reference numerals omitted) arranged side by side in a manner adjacent to each other in the Y direction. These magnet elements are magnetized in the Z direction and arranged such that the orientations of their magnetic poles are opposite to each other.

[0283] The first OIS coil 352b and the second OIS coil 353b are each a so-called air-core coil having an oval shape that is powered during shake correction. The first OIS coil 352b and the second OIS coil 353b are each fixed to the coil mounting portions 32i and 32j of the second base 32 in a state where their major axes are aligned with the X direction. In this state, the first OIS coil 352b and the second OIS coil 353b respectively overlap the first OIS magnet 352a and the second OIS magnet 353a with a predetermined interval in the Z direction.

[0284] As described above, at least a part of the first OIS actuator 352 (the first OIS magnet 352a and the first OIS coil 352b) is arranged in the Z direction between the first protruding portion 34a1 and the second protruding portion 34a3 of the lens guide 341. On the other hand, at least a part of the second OIS actuator 353 (the second OIS magnet 353a and the second OIS coil 353b) is arranged in the Z direction between the first protruding portion 34a2 and the second protruding portion 34a4 of the lens guide 341. Such a structure is effective for reducing the height of the lens module 3, and further effective for reducing the height of the camera module 1.

[0285] The Y-position detection magnet 352c is held by the fourth magnet holding portion 34b5 of the lens guide 341. In addition, the Y-position detection magnet 353c is held by the fourth magnet holding portion 34b6 of the lens guide 341.

[0286] As Figure 12 shown, the OIS Hall element 353d is fixed to the Hall element fixing portion 34d8 of the FPC 344 (see Figure 15 ). The OIS Hall element 353d detects the magnetic flux of the Y-position detection magnet 353c (also referred to as information related to the position), and transmits the detection value to the control unit 5 mounted on the sensor substrate 6 (see Figure 17A ). Based on the detection value received from the OIS Hall element 353d, the control unit 5 obtains the position of the Y-position detection magnet 353c (i.e., the lens guide 341) in the Y direction.

[0287] In the rear OIS actuator 351 having the above-described structure, when a current flows through the FPC 344 to the first OIS coil 352b and the second OIS coil 353b under the control of the control unit 5, a Lorentz force is generated that displaces the first OIS magnet 352a and the second OIS magnet 353a in the Y direction. Since the first OIS magnet 352a and the second OIS magnet 353a are respectively fixed to the lens guide 341, the lens guide 341 is displaced in the Y direction based on the above-described Lorentz force. In addition, by controlling the direction of the current flowing through the first OIS coil 352b and the second OIS coil 353b, the displacement direction of the lens guide 341 is switched.

[0288] In addition, in the present embodiment, in order to prevent crosstalk between the rear OIS actuator 351 and the AF actuator 345, magnetic metal shielding plates 7a and 7b are disposed between the first OIS magnet 352a and the first AF magnet 346a in the Z direction, and between the second OIS magnet 353a and the second AF magnet 347a in the Z direction (see Figure 15 , Figure 16 ).

[0289] [Imaging Element Module]

[0290] The imaging element module 4 is disposed at a position closer to the +X direction side than the lens unit 33. The imaging element module 4 is configured to include, for example, an imaging element such as a CCD (charge-coupled device) type image sensor or a CMOS (complementary metal oxide semiconductor) type image sensor. The imaging element of the imaging element module 4 images the object image imaged by the lens unit 33 and outputs an electric signal corresponding to the object image. The sensor substrate 6 is electrically connected to the imaging element module 4, and power is supplied to the imaging element module 4 and the electric signal of the object image captured by the imaging element module 4 is output through the sensor substrate 6. Such an imaging element module 4 can adopt a conventionally known structure.

[0291] [Operations of the Second Shake Correction Device and the AF Device]

[0292] Next, with reference to Figure 17A and Figure 23B , the operations of the second shake correction device 35 and the AF device 34 of the present embodiment will be described. In addition, the operation of the first shake correction device 24 will be omitted.

[0293] When performing jitter correction in the second jitter correction device 35, power is supplied to the first OIS coil 352b and the second OIS coil 353b. Specifically, in the second jitter correction device 35, based on a detection signal from a jitter detection unit (not shown, such as a gyro sensor), the current values of the first OIS coil 352b and the second OIS coil 353b are controlled so that jitter in the Y direction of the camera module 1 is canceled. For example, such control is performed by the control unit 5. At this time, by feeding back the detection value of the OIS Hall element 353d to the control unit 5, the displacement of the lens guide 341 can be accurately controlled.

[0294] If power is supplied to the first OIS coil 352b and the second OIS coil 353b, then based on the interaction between the current flowing through the first OIS coil 352b and the magnetic field of the first OIS magnet 352a, and the interaction between the current flowing through the second OIS coil 353b and the magnetic field of the second OIS magnet 353a, a Lorentz force (Fleming's left hand rule) is generated in the first OIS coil 352b and the second OIS coil 353b.

[0295] In the present embodiment, the direction of the Lorentz force is either one of two directions in the Y direction (also referred to as a specific direction). Since the first OIS coil 352b and the second OIS coil 353b are fixed to the second base 32, a reaction force acts on the first OIS magnet 352a and the second OIS magnet 353a. This reaction force becomes the driving force of the OIS voice coil motor, and the lens guide 341 that holds the first OIS magnet 352a and the second OIS magnet 353a is displaced in the Y direction within the XY plane, thereby performing jitter correction.

[0296] For the jitter correction described above, preferably, the lens guide 341 is displaced in a direction parallel to the Y direction, such as the arrow A Figure 23A as shown. Y2 , Y1 , f However, during jitter correction, an external force (e.g., Figure 23A the arrow A f in the direction of the moment) that causes the displacement of the lens guide 341 to deviate from the Y direction may act on the lens guide 341. If such an external force acts on the lens guide 341 and only the thrust (first thrust) parallel to the Y direction generated by the second jitter correction device 35 is the thrust acting on the lens guide 341, the lens guide 341 is displaced in a direction deviating from the Y direction, such as the arrow A Figure 23A as shown. Y2 In addition, for example, due to the dispersion of the springs 342a1 to 342a4 that make up the first support mechanism 342 described above, the center position of the configuration Figure 14The offset between the intersection point of the straight line L1 and the straight line L2 and the center of gravity G of the movable-side member described above causes the generation of the external force described above. Alternatively, it is possible that, for example, the external force is generated due to individual differences in the springs 342a1 to 342a4 constituting the first support mechanism 342. Not only is the external force the torque described above, but sometimes, for example, the external force is a force in the X direction. Or, the external force sometimes includes a torque and a force in the X direction.

[0297] In contrast, in the present embodiment, during shake correction, the AF actuator 345 is driven under the control of the control unit 5 to generate a resistance (second thrust) that counteracts the external force. Specifically, during shake correction, the AF actuator 345 detects the position of the first AF magnet 346a through the first AF controller 346c (i.e., the first detection unit 346e), and detects the position of the second AF magnet 347a through the second AF controller 347c (i.e., the second detection unit 347e).

[0298] Moreover, the first AF controller 346c (i.e., the first drive control unit 346f) controls the current value of the first AF coil 346b (hereinafter referred to as the first current value) based on the control signal received from the control unit 5 (for example, the displacement direction and displacement amount for shake correction) and the detection value of the first detection unit 346e. At the same time, the second AF controller 347c (i.e., the second drive control unit 347f) controls the current value of the second AF coil 347b (hereinafter referred to as the second current value) based on the detection value of the second detection unit 347e. Thereby, the AF actuator 345 generates the above-mentioned resistance (for example, torque) based on the thrust of the first AF actuator 346 and the thrust of the second AF actuator 347.

[0299] In addition, for the first current value and the second current value, they are selected, for example, from the preliminary data stored in the first drive control unit 346f and the second drive control unit 347f through prior calibration. This preliminary data includes, for example: the displacement direction (for example, Figure 23A the arrow A Y1 in the direction), the displacement amount D1 (refer to Figure 23A ), the deviation direction of the lens guide 341 from the Y direction (for example, Figure 23A the arrow A Y in the direction), and the deviation amount D2 of the lens guide 341 from the Y direction (refer to Figure 23AParameters for jitter correction; and a first current value and a second current value that make the above deviation amount D2 (including tilt) stored corresponding to the correction parameters zero. In the above calibration, within the entire stroke range of the lens guide 341 in the Y direction, the first current value and the second current value corresponding to the above jitter correction parameters are obtained.

[0300] The resistance generated by the AF actuator 345 with respect to the above external force is, for example, Figure 23A the arrow A r of the rotational torque in the direction. Moreover, the AF actuator 345 applies the generated resistance to the lens guide 341. As a result, the lens guide 341 that has received the following resultant force can be displaced in a direction parallel to the Y direction, such as Figure 23A the arrow A Y1 in the state where the above external force acts, and the resultant force is the resultant force of the thrust parallel to the Y direction (also referred to as a specific direction) generated by the second jitter correction device 35 and the resistance generated by the AF actuator 345.

[0301] In addition, when the AF device 34 performs autofocus, power is supplied to the first AF coil 346b and the second AF coil 347b. In the present embodiment, the current value in the first AF coil 346b is controlled by the first AF controller 346c. In addition, the current value in the second AF coil 347b is controlled by the second AF controller 347c.

[0302] Specifically, the first AF controller 346c controls the current value (first current value) of the first AF coil 346b based on the control signal received from the control unit 5 through the first data signal line L5 and the detection value of the first detection unit 346e of the first AF controller 346c.

[0303] In addition, the second AF controller 347c controls the current value (second current value) of the second AF coil 347b based on the control signal received from the control unit 5 through the second data signal line L6 and the detection value of the second detection unit 347e of the second AF controller 347c.

[0304] When power is supplied to the first AF coil 346b and the second AF coil 347b, Lorentz forces are generated in the first AF coil 346b and the second AF coil 347b due to the interaction between the current flowing through the first AF coil 346b and the magnetic field of the first AF magnet 346a, and the interaction between the current flowing through the second AF coil 347b and the magnetic field of the second AF magnet 347a.

[0305] When the Lorentz force generated from the first AF coil 346b and the Lorentz force generated from the second AF coil 347b are equal in direction and magnitude, the direction of the resultant force of these respective Lorentz forces is either one of the two directions in the X direction. Since the first AF magnet 346a and the second AF magnet 347a are fixed to the second base 32, a reaction force acts on the first AF coil 346b and the second AF coil 347b. This reaction force becomes the driving force of the AF voice coil motor, thereby maintaining the movement of the lens guide 341 of the first AF coil 346b and the second AF coil 347b in the X direction (the direction of the second optical axis), and thus performing autofocusing.

[0306] For the autofocusing as described above, preferably, the lens guide 341 is displaced, for example, in a direction parallel to the X direction such as Figure 23A the arrow A x1 However, during autofocusing, sometimes an external force (e.g., Figure 23A the arrow A f the moment in the direction) that displaces the lens guide 341 deviated from the X direction acts on the lens guide 341. If such an external force acts on the lens guide 341 and only the thrust parallel to the X direction (the first thrust) is the thrust acting on the lens guide 341, the lens guide 341 is displaced in a direction deviated from the X direction such as Figure 23A the arrow A X2 Not only is the above external force the above moment, but sometimes, for example, the above external force is a force toward the Y direction. Or, the external force sometimes includes a moment and a force toward the Y direction.

[0307] In contrast, in the present embodiment, during autofocusing, by making the thrust generated by the first AF actuator 346 different from the thrust generated by the second AF actuator 347, a thrust including a thrust parallel to the X direction (the first thrust) and a resistance (the second thrust) against the above external force is generated. Specifically, during autofocusing, the AF actuator 345 detects the position of the first AF magnet 346a through the first AF controller 346c (i.e., the first detection unit 346e), and detects the position of the second AF magnet 347a through the second AF controller 347c (i.e., the second detection unit 347e).

[0308] Moreover, the AF actuator 345 controls the current value of the first AF coil 346b through the first AF controller 346c (i.e., the first drive control unit 346f), and controls the current value of the second AF coil 347b through the second AF controller 347c (i.e., the second drive control unit 347f). Thereby, the thrust generated by the first AF actuator 346 is made different from the thrust generated by the second AF actuator 347. Based on such a difference in thrust, the AF actuator 345 generates a thrust including a thrust parallel to the X direction (first thrust) and the above-mentioned resistance (second thrust). Specifically, the thrust parallel to the X direction is the resultant force of the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347. In addition, the above-mentioned resistance (second thrust) is a torque generated based on the difference between the thrust generated by the first AF actuator 346 and the thrust generated by the second AF actuator 347 (refer to Figure 23A Arrow A r ).

[0309] In addition, for the above-mentioned first current value and the above-mentioned second current value, they are selected, for example, from the preliminary data stored in the first drive control unit 346f and the second drive control unit 347f through prior calibration. The preliminary data includes, for example: the displacement direction (e.g., Figure 23A Arrow Ax1 direction) when the lens guide 341 is displaced in the X direction by the AF actuator 345, the displacement amount D3 (refer to Figure 23A ), the deviation direction of the lens guide 341 from the X direction (e.g., Figure 23A Arrow A X direction) and the amount D4 of deviation of the lens guide 341 from the X direction (refer to Figure 23A ) that constitute AF parameters; and the first current value and the second current value that make the above-mentioned deviation amount D4 (including inclination) stored corresponding to the AF parameters zero. In the above calibration, within the entire stroke range of the lens guide 341 in the X direction, the first current value and the second current value corresponding to the above AF parameters are obtained.

[0310] The resistance generated by the AF actuator 345 with respect to the above external force is, for example, Figure 23A Arrow A r direction of rotational torque. Moreover, the AF actuator 345 causes the generated thrust (resultant force of the first thrust and the second thrust) to act on the lens guide 341. As a result, the lens guide 341 subjected to such a thrust can be displaced in a direction parallel to the X direction as shown in Figure 23A Arrow A x1 under the state of the action of the above external force.

[0311] In addition, as shown in Figure 23BAs shown by the double-dashed line in the figure, when the lens guide 341 is in the stopped state, a force may sometimes occur that causes the lens guide 341 to tilt with respect to the Y direction and the Z direction (specifically, the first reference plane 32n1 of the reference portion 32n). Such a force is caused by assembly errors or individual differences in the springs 342a1 to 342a4 that make up the first support mechanism 342. If such a tilt exists, during autofocus, the lens guide 341 maintains the tilt and displaces.

[0312] Therefore, in the present embodiment, as Figure 23B shown by the solid line in the figure, with the state where the end face on the + side in the X direction of the lens guide 341 is in contact with the first reference plane 32n1 of the reference portion 32n (i.e., the reference state of the lens guide 341) as the reference, the above-mentioned calibration is performed. Thus, during the above-mentioned autofocus, the lens guide 341 can displace in the X direction while maintaining a state of not tilting with respect to the first reference plane 32n1 of the reference portion 32n (i.e., Figure 23B the state of the lens guide 341 shown by the solid line in the figure). In addition, according to the structure described above, in the assembly process of the camera module 1, it may be possible to omit or simplify the operation of active calibration between the prism module 2 and the lens module 3.

[0313] [Regarding the functions and effects of the present embodiment]

[0314] As described above, according to the camera module 1 of the present embodiment, during shake correction, the lens guide 341 can be displaced accurately in the Y direction as a specific direction. In addition, according to the camera module 1 of the present embodiment, during autofocus, the lens guide 341 can be displaced accurately in the X direction as a specific direction.

[0315] [Embodiment 2]

[0316] Refer to Figure 24 and Figure 25 , and an embodiment 2 of the present invention will be described. In the camera module of the present embodiment, the structure of the rear OIS actuator 351B of the second shake correction device is different from that of the above-mentioned embodiment 1. Below, regarding the camera module of the present embodiment, the description will focus on the structure different from that of embodiment 1.

[0317] The rear OIS actuator 351B is a drive mechanism, which has a first OIS actuator 352B disposed on the + side in the Y direction and a second OIS actuator 353B disposed on the - side in the Y direction.

[0318] The first OIS actuator 352B has a first OIS magnet 352a and a pair of first OIS coils 352b1, 352b2. The first OIS magnet 352a is the same as that in the above-described Embodiment 1.

[0319] The pair of first OIS coils 352b1, 352b2 are so-called air-core coils having an oval shape that are powered during shake correction. The pair of first OIS coils 352b1, 352b2 are fixed to the coil mounting portion 32i of the second base 32 in a state where the major axes are aligned with the X direction and are spaced apart in the X direction.

[0320] The second OIS actuator 353B has a second OIS magnet 353a, a pair of second OIS coils 353b1, 353b2, a first OIS controller 353e, and a second OIS controller 353f. The second OIS magnet 353a is the same as that in the above-described Embodiment 1.

[0321] The pair of second OIS coils 353b1, 353b2 are so-called air-core coils having an oval shape that are powered during shake correction. The pair of second OIS coils 353b1, 353b2 are fixed to the coil mounting portion 32j of the second base 32 in a state where the major axes are aligned with the X direction and are spaced apart in the X direction.

[0322] Although not shown in the figure, the second OIS coil 353b1 is electrically connected to the first OIS coil 352b1. The second OIS coil 353b2 is electrically connected to the first OIS coil 352b2.

[0323] As Figure 25 shown, the first OIS coil 352b1 and the second OIS coil 353b1 are connected to the first OIS controller 353e through the first coil power supply lines L9a, L10a. The current values of the first OIS coil 352b1 and the second OIS coil 353b1 are controlled by the first OIS controller 353e.

[0324] In addition, as Figure 25 shown, the first OIS coil 352b2 and the second OIS coil 353b2 are connected to the second OIS controller 353f through the second coil power supply lines L11a, L12a. The current values of the first OIS coil 352b2 and the second OIS coil 353b2 are controlled by the second OIS controller 353f.

[0325] The first OIS controller 353e is fixed to the FPC 344B. Such a first OIS controller 353e has a first detection unit 353g and a first drive control unit 353h.

[0326] The first detection unit 353g detects the magnetic flux of the second OIS magnet 353a at the position where the first detection unit 353g is fixed (also referred to as information related to the position). The first detection unit 353g transmits the detection value to the first drive control unit 353h.

[0327] Based on the detection value received from the first detection unit 353g, the first drive control unit 353h controls the current values of the first OIS coil 352b1 and the second OIS coil 353b1. In addition, the first drive control unit 353h does not perform control related to the current values of the first OIS coil 352b2 and the second OIS coil 353b2.

[0328] The second OIS controller 353f is fixed to the FPC 344B. Such a second OIS controller 353f has a second detection unit 353i and a second drive control unit 353j.

[0329] The second detection unit 353i detects the magnetic flux of the second OIS magnet 353a at the position where the second detection unit 353i is fixed (also referred to as information related to the position). The second detection unit 353i transmits the detection value to the second drive control unit 353j.

[0330] Based on the detection value received from the second detection unit 353i, the second drive control unit 353j controls the current values of the first OIS coil 352b2 and the second OIS coil 353b2. In addition, the second drive control unit 353j does not perform control related to the current values of the first OIS coil 352b1 and the second OIS coil 353b1.

[0331] The rear OIS actuator 351B as described above is connected to the control unit 5 through Figure 25 the OIS drive control circuit 344c shown. The OIS drive control circuit 344c is provided on the FPC 344B.

[0332] As Figure 25 shown, the OIS drive control circuit 344c has: a first power supply line L1a, a second power supply line L2a, a first ground line L3a, a second ground line L4a, a first data signal line L5a, a second data signal line L6a, a first clock line L7a, a second clock line L8a, a first coil power supply line L9a, L10a, and a second coil power supply line L11a, L12a. Such an OIS drive control circuit 344c is almost the same as the AF drive control circuit 344b in the above-described Embodiment 1. Therefore, the detailed description related to the OIS drive control circuit 344c is omitted. The description related to the AF drive control circuit 344b in the above-described Embodiment 1 can be appropriately applied to the description of the drive control circuit 344c.

[0333] In the structure of the present embodiment as described above, by independently controlling the current values of the first OIS coil 352b1 and the second OIS coil 353b1, and the current values of the first OIS coil 352b2 and the second OIS coil 353b2, it is possible to make the thrust generated by the actuator (hereinafter referred to as the first actuator) composed of the first OIS coil 352b1, the second OIS coil 353b1, the first OIS magnet 352a, and the second OIS magnet 353a different from the thrust generated by the actuator (hereinafter referred to as the second actuator) composed of the first OIS coil 352b2, the second OIS coil 353b2, the first OIS magnet 352a, and the second OIS magnet 353a.

[0334] Specifically, when the thrust generated by the first actuator is the same as the thrust generated by the second actuator, the thrust generated by the rear OIS actuator 351B is composed only of the first thrust in the Y direction. On the other hand, when the thrust generated by the first actuator is different from the thrust generated by the second actuator, the thrust generated by the rear OIS actuator 351B has: the first thrust in the Y direction, which is the resultant force of the thrust generated by the first actuator and the thrust generated by the second actuator, and the second thrust based on the moment around the center of gravity G of the movable-side member generated by this resultant force.

[0335] Such a second thrust becomes a resistance against the external force that causes the lens guide 341 to deviate from the Y direction during jitter correction. As a result, the rear OIS actuator 351B can reduce or make zero the amount by which the lens guide 341 deviates from the X direction during jitter correction. Other structures, operations, and effects are the same as those of the above-described Embodiment 1.

[0336] In addition, for the operation of the camera module of the present embodiment during jitter correction, it is only necessary to appropriately replace the operation of the camera module of the above-described Embodiment 1. In addition, for the structure of the present embodiment, within a technically non-contradictory range, it can be implemented in appropriate combination with the structure of the above-described Embodiment 1.

[0337] [Supplementary Note]

[0338] As described above, the invention completed by the present inventor has been specifically described based on the embodiments, but the present invention is not limited to the above-described embodiments and can be modified without departing from the gist thereof.

[0339] In each of the above-described embodiments, the camera module includes: a first support mechanism that elastically supports the movable-side member with respect to the fixed-side member, and a second support mechanism that supports the movable-side member in such a manner that the movable-side member can be displaced in the XY plane with respect to the fixed-side member and cannot be displaced in the Z direction.

[0340] However, in the case of implementing the present invention, the structure of the support mechanism that supports the movable-side member in such a way that the movable-side member can be displaced relative to the fixed-side member is not limited to the above-described first support mechanism and second support mechanism.

[0341] For example, in the case of implementing the present invention, at least one of the above-described first support mechanism and second support mechanism may be omitted. For example, Figure 26 the lens module 3B shown has a structure in which the first support mechanism 342 (see Figure 9C , Figure 10 , and Figure 14 ) is omitted from the lens module 3 of the above-described Embodiment 1 and Embodiment 2.

[0342] That is, Figure 26 in the lens module 3B shown, as the support mechanism that supports the movable-side member in such a way that the movable-side member can be displaced relative to the fixed-side member, only the second support mechanism 343 (see Figure 9C and Figure 10 ) in the above-described Embodiment 1 and Embodiment 2 is provided. The structure of the second support mechanism 343 is the same as that of the above-described Embodiment 1. In addition, Figure 26 since the lens module 3B shown does not have the first support mechanism 342, it also does not have a structure corresponding to the first support mechanism 342 (for example, the spring arrangement portions 32m1 to 32m4 of the second base 32, see Figure 9C and Figure 10 ).

[0343] In addition, although not shown in the drawings, in the lens module, as the support mechanism that supports the movable-side member in such a way that the movable-side member can be displaced relative to the fixed-side member, only the first support mechanism 342 in the above-described Embodiment 1 and Embodiment 2 may be provided. In addition, for the first support mechanism that elastically supports the movable-side member relative to the fixed-side member, a plurality of suspension lines (not shown) may be used instead of the spring arrangement portions 32m1 to 32m4.

[0344] In addition, for example, in each of the above-described embodiments, as an example of the camera mounting device including the camera module 1, a smartphone, which is a camera-equipped portable terminal, has been described. However, the present invention can be applied to the following camera mounting devices, which include a camera module and an image processing unit that processes the image information obtained by the camera module. The camera mounting device includes an information device and a transportation device. The information device includes, for example, a camera-equipped mobile phone, a laptop computer, a tablet terminal, a portable game machine, a web camera, a camera-equipped in-vehicle device (for example, a rear monitoring device, a dash cam device). In addition, the transportation device includes, for example, an automobile.

[0345] Figure 28A 、 Figure 28B is a view showing an automobile V which is a camera mounting device for mounting a vehicle-mounted camera module VC (Vehicle Camera). Figure 28A is a front view of the automobile V, Figure 28B is a rear perspective view of the automobile V. In the mounting embodiment of the automobile V, the camera module 1 described in the embodiment is mounted as the vehicle-mounted camera module VC. As shown in FIG. 28, the vehicle-mounted camera module VC is mounted, for example, on the windshield facing forward or on the tailgate facing rearward. The vehicle-mounted camera module VC is used for rear monitoring, dashcam, collision avoidance control, autonomous driving control, etc.

[0346] In addition, the structures of the voice coil motor for AF and the voice coil motor for OIS in the present invention are not limited to the structures shown in the above-described respective embodiments.

[0347] In addition, as a support mechanism for supporting the movable-side member on the fixed-side member, for example, an elastic support member made of an elastic body or the like can also be applied to replace the springs 342a1 to 342a4 of the first support mechanism 342 shown in the above-described respective embodiments.

[0348] The present invention can also be applied to a lens driving device that has only an AF function and does not have an OIS function. In addition, the present invention can also be applied to a lens driving device that has only an OIS function and does not have an AF function.

[0349] It should be considered that the above-described respective embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is not represented by the above description but by the claims, and also includes all modifications within the meaning and scope equivalent to the claims.

[0350] The entire disclosure of the specification, drawings, and abstract included in Japanese Patent Application No. 2018-87355 filed on April 27, 2018 is incorporated herein by reference.

[0351] Industrial Applicability

[0352] The camera actuator and the camera module of the present invention can be mounted, for example, on thin camera mounting devices such as smartphones, mobile phones, digital cameras, laptop computers, tablet terminals, portable game machines, and vehicle-mounted cameras.

[0353] Explanation of Reference Numerals

[0354] 1 Camera module

[0355] 2 Prism module

[0356] 21 First cover

[0357] 22 First base

[0358] 220 Base side opening

[0359] 223 First accommodation space

[0360] 224a, 224b First side wall part

[0361] 224c1, 224c2 First weir part

[0362] 224d1, 224d2 Second weir part

[0363] 224e1, 224e2, 224f1, 224f2 Spring arrangement space

[0364] 224g1, 224g2, 224g3 Protrusion

[0365] 224h1, 224h2, 224h3 Protrusion

[0366] 225c First receiving part

[0367] 225d Second receiving part

[0368] 226 First positioning protrusion

[0369] 227 Second positioning protrusion

[0370] 229 Bottom wall part

[0371] 23 Prism

[0372] 231 Optical path bending surface

[0373] 24 First jitter correction device

[0374] 241 Bracket

[0375] 241a Mounting surface

[0376] 241f, 241g Opposing wall parts

[0377] 241q, 241r Protruding parts

[0378] 243 Swinging support spring

[0379] 243a, 243b First locking part

[0380] 243c Second locking part

[0381] 243d, 243e First through hole

[0382] 243f Second through hole

[0383] 243g Torsion allowance part

[0384] 243h Spring side guide surface

[0385] 243i Continuous part

[0386] 243j, 243k Continuous part elements

[0387] 243j1 Base end side continuous part

[0388] 243j2 Meandering continuous part

[0389] 244 Front side OIS actuator

[0390] 244a First magnet

[0391] 244c First coil

[0392] 244e First Hall element

[0393] 245 Swing guide part

[0394] 25FPC

[0395] 27 Vibration damping part

[0396] 3, 3B Lens module

[0397] 31 Second cover

[0398] 31a Top plate part

[0399] 31b Front plate part

[0400] 31c Rear plate part

[0401] 31d First side plate part

[0402] 31e Second side plate part

[0403] 31f Cutout part

[0404] 31g Front side opening

[0405] 31h Corner part

[0406] 31i Rear side opening

[0407] 32 Second base

[0408] 32a Lower base element

[0409] 32b Upper base element

[0410] 32c Second accommodation space

[0411] 32d bottom surface part

[0412] 32e, 32f bottom surface through holes

[0413] 32g, 32h second side wall parts

[0414] 32a1 second lower wall element

[0415] 32a2 second lower wall element

[0416] 32b1 second upper wall element

[0417] 32b2 second upper wall element

[0418] 32i, 32j coil placement parts

[0419] 32k reinforcement plate

[0420] 32m1, 32m2, 32m3, 32m4 spring placement parts

[0421] 32n reference part

[0422] 32n1 first reference surface

[0423] 33 lens part

[0424] 34 AF device

[0425] 341 lens guide

[0426] 341a lens holding part

[0427] 34a1, 34a2 first protruding parts

[0428] 34a3, 34a4 second protruding parts

[0429] 34a5, 34a6 first magnet holding parts

[0430] 34a7, 34a8 second magnet holding parts

[0431] 34b1, 34b2 space

[0432] 34b3, 34b4 third magnet holding parts

[0433] 34b5, 34b6 fourth magnet holding parts

[0434] 342 first support mechanism

[0435] 342a1, 342a2, 342a3, 342a4 springs

[0436] 342b first fixing part

[0437] 342c second fixing part

[0438] 342d Connection part

[0439] 342e First bending part

[0440] 342f Second bending part

[0441] 343 Second support mechanism

[0442] 343a Ball holding part

[0443] 343b1, 343b2 Track components

[0444] 343c Track surface

[0445] 343d Connection component

[0446] 343e Ball

[0447] 344, 344B FPC

[0448] 344a FPC base

[0449] 34d1 First terminal part

[0450] 34d2 Second terminal part

[0451] 34d3 Third terminal part

[0452] 34d4 First coil fixing part

[0453] 34d5 Second coil fixing part

[0454] 34d6 First controller fixing part

[0455] 34d7 Second controller fixing part

[0456] 34d8 Hall element fixing part

[0457] 344b AF drive control circuit

[0458] L1, L1a First power supply line

[0459] L2, L2a Second power supply line

[0460] L3, L3a First ground line

[0461] L4, L4a Second ground line

[0462] L5, L5a First data signal line

[0463] L6, L6a Second data signal line

[0464] L7, L7a First clock line

[0465] L8, L8a Second clock line

[0466] L9, L10, L9a, L10a First coil power supply line

[0467] L11, L12, L11a, L12a Second coil power supply line

[0468] L13, L14 Signal line

[0469] T1, T1a Power supply terminal

[0470] T2, T2a Ground terminal

[0471] T3, T3a Data signal terminal

[0472] T4, T4a First clock terminal

[0473] T5, T5a Second clock terminal

[0474] 344c OIS drive control circuit

[0475] 345, 345A AF actuator

[0476] 346, 346A First AF actuator

[0477] 346a First AF magnet

[0478] 346b First AF coil

[0479] 346c, 346c2 First AF controller

[0480] 346d First X position detection magnet

[0481] 346e, 346e2 First detection unit

[0482] 346f First drive control unit

[0483] 347, 347A Second AF actuator

[0484] 347a Second AF magnet

[0485] 347b Second AF coil

[0486] 347c, 347c2 Second AF controller

[0487] 347d X position detection second magnet

[0488] 347e Second detection unit

[0489] 347f Second drive control unit

[0490] 35 Second Jitter Correction Device

[0491] 351, 351B Rear OIS Actuator

[0492] 352, 352B First OIS Actuator

[0493] 352a First OIS Magnet

[0494] 352b, 352b1, 352b2 First OIS Coil

[0495] 352c Y - position Detection Magnet

[0496] 353, 353B Second OIS Actuator

[0497] 353a Second OIS Magnet

[0498] 353b, 353b1, 353b2 Second OIS Coil

[0499] 353c Y - position Detection Magnet

[0500] 353d OIS Hall Element

[0501] 353e First OIS Controller

[0502] 353f Second OIS Controller

[0503] 353g First Detection Unit

[0504] 353h First Drive Control Unit

[0505] 353i Second Detection Unit

[0506] 353j Second Drive Control Unit

[0507] 4 Imaging Element Module

[0508] 5 Control Unit

[0509] 6, 6B Sensor Substrate

[0510] 6a Circuit on the Substrate Side

[0511] 7a, 7b Shielding Plate

[0512] V Automobile

[0513] VC Vehicle - mounted Camera Module

[0514] M Smart Phone

Claims

1. An actuator for a camera, comprising: A fixed-side member; A movable-side member, which is arranged to be displaceable relative to the fixed-side member and holds a lens unit; and A drive unit for autofocus, which has an AF actuator and displaces the movable-side member in the X direction, The AF actuator has a first AF coil and a second AF coil, The fixed-side member includes a bottom surface portion having a base portion made of synthetic resin, and a metal reinforcing plate is embedded in the base portion, The bottom surface portion has through holes on both sides of the reinforcing plate in the Y direction, and the Y direction is orthogonal to the X direction, The first AF coil is disposed in one of the through holes, The second AF coil is disposed in the other through hole, The drive unit generates a resultant force obtained by synthesizing the following forces as a driving force: a thrust force for displacing the movable-side member in the X direction and a resistance force against an external force acting in a manner that causes the movable-side member to deviate from the X direction.

2. The actuator for a camera according to claim 1, wherein The reinforcing plate has a surface exposed from the base portion and covered by the movable-side member.

3. The actuator for a camera according to claim 1, wherein It further includes a flexible printed circuit board fixed to the back surface of the base portion, The drive unit is fixed to the flexible printed circuit board.

4. A camera module, comprising: The actuator for a camera according to any one of claims 1 to 3; and An imaging element, which is arranged at the rear stage of the lens unit.

5. A camera mounting device, having: The camera module according to claim 4; and A control unit, which controls the camera module.

Images