Optical element driving device

Abstract

The optical element driving device of the present application can be built into a camera mounting device, and has: a movable portion that can hold an optical element; a housing that accommodates the movable portion; a driving portion that includes an ultrasonic motor that drives the movable portion relative to the housing; and a step-up portion that has an inductor that steps up an input voltage input to the driving portion and supplies the ultrasonic motor, the ultrasonic motor having a piezoelectric element that vibrates due to the input voltage, and a resonance portion that resonates with the vibration of the piezoelectric element, the inductor being covered by a cover portion.

Description

[0001] This application is a divisional application of Chinese invention patent application filed on March 24, 2021, with application number 202180028753.1, entitled "Optical Element Driving Device, Camera Module and Camera Mounting Device", and filed by Mimi Electric Co., Ltd. Technical Field

[0002] This invention relates to an optical element driving device, a camera module, and a camera mounting device. Background Technology

[0003] Previously, camera modules were known to be mounted on thin camera mount devices such as smartphones. Among these camera modules, those equipped with a lens driving device (optical element driving device) are known to have a zoom function that can magnify or reduce the image of the subject being photographed.

[0004] For example, Patent Document 1 discloses a structure comprising: a fixed lens into which light from a photographed object is incident; two movable lenses into which light refracted by the fixed lens is incident; and a lens drive unit for moving the two movable lenses along the optical axis.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2018-36416 Summary of the Invention

[0008] The problem the invention aims to solve

[0009] However, from the viewpoint of miniaturizing lens driving devices, ultrasonic motors incorporating piezoelectric elements are being investigated as driving sources for movable lenses. Driving an ultrasonic motor requires a relatively large driving voltage. In thin camera mount devices, the input voltage in the lens driving device is relatively small; therefore, an inductor is needed to boost this input voltage before supplying it to the ultrasonic motor.

[0010] However, the inductors require separate space from the lens drive unit in the camera mounting device. Furthermore, the inductors themselves have significant deviations, so users also need to consider their relationship with the lens drive unit and make additional adjustments. In other words, a lens drive unit using an ultrasonic motor may be a user-unfriendly device.

[0011] The purpose of this invention is to provide an optical element driving device, a camera module, and a camera mounting device that can improve user-friendliness.

[0012] Solution to the problem

[0013] One aspect of the present invention provides an optical element driving device that can be integrated into a camera mounting device, comprising: a movable part capable of holding an optical element; a housing housing the movable part; a driving part including an ultrasonic motor that drives the movable part relative to the housing; and a boosting part having an inductor that boosts an input voltage input to the driving part and supplies it to the ultrasonic motor, the ultrasonic motor having a piezoelectric element that vibrates due to the input voltage and a resonant part that resonates with the vibration of the piezoelectric element, the inductor being covered by a cover.

[0014] One embodiment of the optical element driving device of the present invention can be integrated into a camera mounting device and includes:

[0015] The movable part is able to hold the optical elements;

[0016] The driving unit includes an ultrasonic motor, which drives the movable part;

[0017] The boost unit has an inductor that boosts the input voltage input to the drive unit and supplies it to the ultrasonic motor;

[0018] The position detection unit detects the position of the movable part; and

[0019] The substrate portion, wherein the position detection portion and the boost portion are disposed on the substrate portion.

[0020] The camera module of the present invention includes:

[0021] The aforementioned optical element driving device;

[0022] The optical section includes the optical element held in the movable section; and

[0023] The camera unit captures an image of the subject that has been imaged through the optical unit.

[0024] The camera module drives the optical elements.

[0025] The camera mounting device of the present invention is an information device or a transportation device, and includes:

[0026] The aforementioned camera module; and

[0027] The camera control unit processes the image information obtained by the camera module.

[0028] Invention Effects

[0029] According to the present invention, ease of use for users can be improved. Attached Figure Description

[0030] Figure 1This is a diagram that simply illustrates a camera module according to an embodiment of the present invention.

[0031] Figure 2 This is a diagram that simply shows the structure of the camera module of this embodiment as viewed from the side.

[0032] Figure 3 This is a 3D view showing the housing portion of the camera module.

[0033] Figure 4 This is a perspective view of the bottom wall side of the camera module's housing.

[0034] Figure 5 This is an exploded perspective view of the housing and lens section.

[0035] Figure 6 It is an exploded perspective view of the side wall and bottom wall of the shell.

[0036] Figure 7 This is a diagram of the shell viewed from the Z-direction + side.

[0037] Figure 8 This is a diagram showing the inner side of the shell viewed from one side in the X direction.

[0038] Figure 9 This is a diagram representing the guided part.

[0039] Figure 10 This is a diagram showing the connection between the lens and the frame.

[0040] Figure 11 It is an exploded perspective view of the guided part and the clamping part.

[0041] Figure 12A It is a diagram used to illustrate the positional relationship between the magnet and the position detection unit.

[0042] Figure 12B It is a diagram used to illustrate the positional relationship between the magnet and the position detection unit.

[0043] Figure 12C It is a diagram used to illustrate the positional relationship between the magnet and the position detection unit.

[0044] Figure 13A This is a diagram used to illustrate the adjustment of the positional relationship between the clamping part and the guide shaft.

[0045] Figure 13B This is a diagram used to illustrate the adjustment of the positional relationship between the clamping part and the guide shaft.

[0046] Figure 14 This is a diagram showing the second clamping component.

[0047] Figure 15This is a diagram showing the configuration relationship between the clamping part and the ultrasonic motor.

[0048] Figure 16 This is a 3D diagram of an ultrasonic motor.

[0049] Figure 17 This is an exploded 3D view of an ultrasonic motor.

[0050] Figure 18 This is an enlarged view of the contact area between the resonant part and the clamping part.

[0051] Figure 19 This is a diagram used to illustrate the structure of the guide section.

[0052] Figure 20 This is a diagram used to illustrate the structure of the guide section.

[0053] Figure 21A This is an enlarged view of the terminal section, the base plate section, and the boost configuration section within the housing.

[0054] Figure 21B This is an enlarged view of the base plate section and the boost configuration section in the housing.

[0055] Figure 22 This is a diagram showing the terminal section.

[0056] Figure 23 This is a diagram showing the substrate portion.

[0057] Figure 24 This diagram shows the state after the base plate portion of the housing has been removed.

[0058] Figure 25 It is a diagram showing the positional relationship between the fourth wall, the first substrate, the second substrate, and the lens unit.

[0059] Figure 26 This is a diagram showing the back side of the substrate.

[0060] Figure 27 This is an exploded 3D view of the booster unit.

[0061] Figure 28 This is a diagram that simply represents a modified camera module.

[0062] Figure 29 This is a diagram that simply represents a modified camera module.

[0063] Figure 30 This is a diagram that simply represents a modified camera module.

[0064] Figure 31A This is a diagram representing a smartphone equipped with a camera module.

[0065] Figure 31BThis is a diagram representing a smartphone equipped with a camera module.

[0066] Figure 32A This is a diagram showing a car equipped with a camera module.

[0067] Figure 32B This is a diagram showing a car equipped with a camera module. Detailed Implementation

[0068] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Figure 1 This is a diagram that simply illustrates a camera module 1 according to an embodiment of the present invention. Figure 2 This is a diagram that simply shows the structure of the camera module 1 of this embodiment as viewed from the side.

[0069] Camera module 1, for example, is mounted on smartphone M (see reference). Figure 31A , Figure 31B Slim camera mount devices such as portable phones, digital camcorders, laptops, tablets, portable game consoles, and vehicle-mounted cameras.

[0070] In the description of the structure of the camera module 1 in this embodiment, an orthogonal coordinate system (X, Y, Z) is used. The same orthogonal coordinate system (X, Y, Z) is also used in the figures described later. For example, the camera module 1 is mounted such that, when the camera mounting device is actually taking pictures, 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. Light from the object being photographed enters from the Z-direction - side (negative side), is refracted, and then guided to the Y-direction + side (positive side). By reducing the thickness of the camera module 1 in the Z direction, a thinner camera mounting device can be achieved.

[0071] like Figure 1 As shown, the camera module 1 includes: a housing 10, a reflection drive unit 20, a lens unit 30, an image capture unit 40, and a support shaft 50 (see reference). Figure 3 ), Lens drive unit 60 (refer to) Figure 5 ), Position detection unit 70 (refer to) Figure 10 ), drive control unit 100, terminal unit 130, substrate unit 140 and boost unit 150 (see reference) Figure 7 ).

[0072] The drive control unit 100 includes a CPU (Central Processing Unit), ROM (Read-Only Memory), and RAM (Random Access Memory). The CPU reads a program corresponding to the processing content from the ROM and expands it in the RAM. It then operates in conjunction with the expanded program to centrally control the lens drive unit 60. As a result, the drive control unit 100 drives the second lens unit 32 and the third lens unit 33 (described later) housed in the lens unit 30 of the housing 10 in the Y direction (direction of the optical axis). Consequently, the camera module 1 performs stepless optical zoom and autofocus. The housing 10, support shaft 50, lens drive unit 60, position detection unit 70, drive control unit 100, terminal unit 130, substrate unit 140, and boost unit 150 correspond to the "optical element drive device" of the present invention.

[0073] In addition, such as Figure 2 As shown, in camera module 1, incident light L1 is incident on housing 10 via reflection drive unit 20. Reflection drive unit 20 includes a reflective housing 21, a reflector 22, and a reflection drive control unit 23. Figure 1 and Figure 2 In the example shown, the reflective housing 21 is disposed adjacent to one end of the housing 10 in the Y direction. The reflector 22 is disposed inside the reflective housing 21 and reflects the incident light L1 as reflected light L2 back to the housing 10. The reflection drive control unit 23 has a CPU, ROM, RAM, etc., and controls the direction of the reflector 22.

[0074] Furthermore, the reflector 22 in this embodiment has two rotation axes (not shown) extending in the X and Y directions. In the reflection drive unit 20, under the control of the reflection drive control unit 23, the reflector 22 rotates around these rotation axes. As a result, the camera module 1 has a shake correction function (OIS (Optical Image Stabilization) function) that optically corrects the shaking (vibration) generated during shooting to reduce image blur.

[0075] The reflected light L2 incident on the housing 10 is output to the camera unit 40 via the lens unit 30 housed in the housing 10.

[0076] The camera unit 40 is disposed on the outer surface of the housing 10 in the Y direction on the + side (the placement part 112B of the second wall 112 described later), and is configured to allow reflected light L2 to enter through the lens part 30. The camera unit 40 includes an image sensor and a substrate, etc. (not shown).

[0077] The imaging element is, for example, a CCD (Charge Coupled Device) type image sensor or a CMOS (Complementary Metal Oxide Semiconductor) type image sensor. The imaging element is mounted on a substrate and electrically connected to wiring on the substrate via bonding wires. The imaging element captures an image of the subject image formed by the lens section 30 and outputs an electrical signal corresponding to the captured image.

[0078] Additionally, a printed wiring board (not shown) is electrically connected to the substrate of the camera unit 40, through which power is supplied to the camera element and electrical signals of the image of the subject captured by the camera element are output. These electrical signals are output to the camera control unit 200 provided in the camera mounting device. The camera control unit 200 includes a CPU, ROM, RAM, etc., and processes the image information obtained from the camera module 1. The camera control unit 200 can be mounted on the camera mounting device, but it can also be built into the camera module 1.

[0079] like Figure 3 As shown, the housing 10 accommodates the lens section 30, the support shaft 50, and the lens drive section 60 (see also [reference]). Figure 5 For example, it has a cuboid shape as a whole. The shell 10 has a side wall portion 11 and a bottom wall portion 12 (see reference). Figure 4 ).

[0080] The side wall portion 11 is a wall portion, for example made of resin, having a portion that opens in the Y direction, and having a first wall 111, a second wall 112, a third wall 113, and a fourth wall 114 (see also...). Figure 7 wait).

[0081] The first wall 111 is configured to extend along the Y direction and has a pair of sections on both sides in the X direction. In the pair of first walls 111, a placement section 111A is provided on the inner surface of the housing 10 on the positive side of the first wall 111 in the X direction. This placement section 111A is used to place the ultrasonic motor, described later. The placement sections 111A are respectively provided on both sides of the central portion in the Y direction on the positive side of the first wall 111 in the X direction. The positive side of the first wall 111 in the X direction corresponds to the "side wall" of the present invention.

[0082] In addition, such as Figure 4 As shown, a terminal arrangement portion 111C is provided on the first wall 111 on the + side in the X direction. A terminal portion 130 (see reference 111C) is disposed on the terminal arrangement portion 111C, and is arranged, for example, throughout the inner and outer surfaces of the housing 10 through a gap formed between the first wall 111 and the bottom wall portion 12. Figure 7(etc.). The portion of the terminal 130 located on the outside of the housing 10 is connected to the specified wiring of the camera mounting device.

[0083] In addition, a locking portion 111B is formed on the bottom surface (the side surface in the Z direction) of the first wall 111 for engaging with the positioning portion 121 of the bottom wall portion 12.

[0084] like Figure 3 and Figure 4 As shown, the second wall 112 extends along the X direction and is configured to connect the ends of the pair of first walls 111 on the + side in the Y direction. Furthermore, on the top surface (the + side surface in the Z direction) of the second wall 112, support portions 112A for supporting the support shaft 50 are provided on both sides in the X direction. A placement portion 112B is provided on the outer surface of the second wall 112 for placing the camera unit 40.

[0085] Additionally, a guide support portion 112C and an opening portion 112D are provided within the configuration portion 112B of the second wall 112. In this embodiment, the guide support portion 112C is a hole that supports the guide shafts 81 and 82 (described later), and is located within the configuration portion 112B at a position further in the X direction than the opening portion 112D. Two guide support portions 112C are arranged in the Z direction. The opening portion 112D is an opening for fitting the fourth lens unit 34 of the lens portion 30, and is located at the center of the configuration portion 112B in the X direction.

[0086] like Figure 3 and Figure 5 As shown, a third wall 113 is provided at each of the ends of a pair of first walls 111 in the Y direction. The pair of third walls 113 are respectively provided in a manner that surrounds the space formed by the first wall 111 and the second wall 112. Between the pair of third walls 113, there is a gap to the extent that the first lens unit 31 of the lens section 30 can enter, and a bridging portion 113A is provided to bridge the ends of each third wall 113 in the Z direction.

[0087] Additionally, a support portion 113B for supporting the support shaft 50 is provided on the top surface (the + side surface in the Z direction) of the pair of third walls 113. A guide support portion 113C for supporting the guide shafts 81 and 82 (described later) is provided near the center of the third wall 113 in the Z direction, which is located on the + side in the X direction.

[0088] The guide support 113C is an elongated hole, the length of which in the Z direction is configured to correspond to the arrangement range of the two guide supports 112C on the second wall 112. The guide support 113C is capable of supporting the guide shafts 81 and 82, which are supported by each of the two guide supports 112C on the second wall 112.

[0089] like Figure 5 As shown, the fourth wall 114 forms the bottom wall of the space formed by each of the first walls 111, the third wall 113 corresponding to the first wall 111, and the second wall 112, and is disposed in the region corresponding to the third wall 113 in the X direction (see also...). Figure 7 Therefore, a gap is created between the fourth walls 114 on both sides in the X direction. The fourth walls 114 correspond to the "bottom wall" of the present invention.

[0090] like Figures 4-6 As shown, the bottom wall portion 12 is a generally rectangular metal plate, for example, constituting one side of the wall in the Z direction of the housing 10, and is arranged in such a way that it bridges the fourth walls 114 on both sides in the X direction with a pair of first walls 111. That is, the bottom wall portion 12 is arranged to cover the fourth wall 114 on the side opposite to the first walls 111.

[0091] The bottom wall portion 12 is integrally formed with the bottom surface portion of the side wall portion 11, which includes a pair of first walls 111, by an insert. In addition, a portion of the end portion on one side in the Y direction of the bottom wall portion 12 is cut off, so that there is no portion of the bottom wall portion 12 in the portion corresponding to the first lens unit 31.

[0092] Positioning portions 121 are provided at both ends of the bottom wall portion 12 in the X direction. The positioning portions 121 protrude from both ends of the bottom wall portion 12 and engage with the engaging portions 111B of the first wall 111. Thus, positioning of the bottom wall portion 12 in the Y direction is possible.

[0093] Furthermore, the positioning portion 121 of the bottom wall portion 12 is connected to a component that is grounded (e.g., the cover component of the housing 10 (not shown)). Therefore, the bottom wall portion 12 is grounded.

[0094] in addition, Figure 6 As shown, a bent portion 122 is provided at the side end in the X and Y directions of the bottom wall portion 12. The bent portion 122 is provided by bending this side end towards the + side in the Z direction.

[0095] Additionally, a groove (not shown) is formed in the portion of the housing 10 corresponding to the bent portion 122 for the bent portion 122 to enter. By allowing the bent portion 122 to enter the groove, the bottom wall portion 12 is fixed to the housing 10.

[0096] Furthermore, a plurality of half-punched holes 123 arranged side by side in the Y direction are formed on the surface of the bottom wall portion 12. The half-punched holes 123 are provided throughout the X direction of the bottom wall portion 12. In this embodiment, a total of 5 half-punched holes 123 are provided.

[0097] By setting the semi-perforated holes 123 in this way, the strength of the bottom wall portion of the housing 10 can be improved.

[0098] like Figure 3 and Figure 5 As shown, the lens section 30 is disposed at the point where the reflected light L2 from the reflection drive section 20 is received (see reference). Figure 2 The region traversed by the lens is the area sandwiched between a pair of first walls 111. The lens section 30 has a first lens unit 31, a second lens unit 32, a third lens unit 33, and a fourth lens unit 34 arranged in the Y direction. The lens section 30 corresponds to the "optical section" of the present invention.

[0099] The first lens unit 31 is positioned at the upstream side of the incident direction of the reflected light L2 (towards the + side in the Y direction) and is fixed between a pair of third walls 113 in the housing 10.

[0100] The side surface of the first lens unit 31 is configured, for example, to be curved in a convex manner with a central portion in the Z direction. The side surface of the third wall 113 on the side of the first lens unit 31 has, for example, a shape along the side surface of the first lens unit 31 and is configured to allow the curved portion of the first lens unit 31 to be inserted. Thus, the first lens unit 31 is fixed between a pair of third walls 113.

[0101] The second lens unit 32 is positioned further downstream than the first lens unit 31 in the incident direction, and has a main body 32A and a supported portion 32B. The third lens unit 33 is positioned further downstream than the second lens unit 32 in the incident direction, and has a main body 33A and a supported portion 33B. The second lens unit 32 corresponds to the "first movable part" of the present invention, and the third lens unit 33 corresponds to the "second movable part" of the present invention.

[0102] Each main body part 32A and 33A is a part that holds the lens through which light passing through the first lens unit 31 passes. The supported parts 32B and 33B are parts that are movably supported by the support shaft 50 and are respectively provided on both sides of each main body part 32A and 33A in the X direction.

[0103] The lens included in the main body 32A of the second lens unit 32 corresponds to the "first optical element" of the present invention. The lens included in the main body 33A of the third lens unit 33 corresponds to the "second optical element" of the present invention.

[0104] The fourth lens unit 34 is disposed on the downstream side in the incident direction and is configured to include a lens. The fourth lens unit 34 is supported by a support shaft 50 at a position adjacent to the second wall 112 of the housing 10. Additionally, as... Figure 4 As shown, in this embodiment, a protrusion 34A is provided on the surface of the fourth lens unit 34 on the + side in the Y direction.

[0105] It should be noted that the lenses in the first to fourth lens units 31 to 34 can be assembled into the housing 10 either during the manufacturing of the optical element drive device or during the manufacturing of the camera module 1 using the optical element drive device.

[0106] The protrusion 34A is sized to engage with the opening 112D of the second wall 112. By engaging the protrusion 34A with the opening 112D, the fourth lens unit 34 is fixed to the housing 10.

[0107] like Figure 3 and Figure 5 As shown, the support shaft 50 is made of, for example, stainless steel. The support shaft 50 extends along the Y direction and is disposed in each region of a pair of third walls 113. In this embodiment, each support shaft 50 is configured to be of equal length and is supported by the support portion 113B of the third wall 113 and the support portions 112A of the second wall 112.

[0108] The lens driving unit 60 is respectively provided corresponding to the second lens unit 32 and the third lens unit 33, and under the control of the aforementioned driving control unit 100, it causes one of the corresponding second lens unit 32 and the third lens unit 33 to move independently. The lens driving unit 60 is disposed in the region of the fourth wall 114 on the + side in the X direction, surrounded by the first wall 111, the second wall 112, and the third wall 113. That is, as Figure 7 As shown, the lens drive unit 60 is disposed on one end of the housing 10, between the second lens unit 32 and the third lens unit 33, which sandwich the optical axis O.

[0109] In this embodiment, two lens driving units 60 are arranged in the Y direction. The lens driving unit 60 on the - side of the Y direction drives the second lens unit 32 along the Y direction; the lens driving unit 60 on the + side of the Y direction drives the third lens unit 33 along the Y direction. That is, the lens driving unit 60 on the - side of the Y direction corresponds to the "first driving unit" of the present invention, and the lens driving unit 60 on the + side of the Y direction corresponds to the "second driving unit" of the present invention.

[0110] In this embodiment, each lens driving unit 60 has a substantially identical structure. Therefore, in the following description, unless otherwise stated, only the lens driving unit 60 corresponding to the second lens unit 32 will be described, and the description of the lens driving unit 60 corresponding to the third lens unit 33 will be omitted. Furthermore, in this embodiment, each lens driving unit 60 is symmetrically arranged in the Y direction. Therefore, the relationship between the + and - sides in the Y direction of the lens driving unit 60 corresponding to the third lens unit 33 is the opposite of the relationship between the + and - sides in the Y direction of the lens driving unit 60 corresponding to the second lens unit 32.

[0111] The lens drive unit 60 has a frame 61, a connecting part 62, a clamping part 63, an ultrasonic motor 64, and a guide part 80.

[0112] The frame 61 is connected to either the supported portions 32B or 33B of the second lens unit 32 and the third lens unit 33 via the connecting portion 62.

[0113] The frame 61 is configured to guide movement in the direction of the optical axis O (Y direction) via the guide portion 80, and can move in the direction of the optical axis O. If the frame 61 moves in the direction of the optical axis O, the second lens unit 32 or the third lens unit 33 connected to the frame 61 by means of the connecting portion 62 also moves along the support axis 50.

[0114] like Figure 8 and Figure 9 As shown, the frame 61 has a guided portion 611 and a magnet holding portion 612. The guided portion 611 is the part that is guided by the guided portion 80 to move along the Y direction of the frame 61, and is provided in the X direction at a position corresponding to the guided portion 80. The guided portion 611 has a first portion 611A, a second portion 611B, a third portion 611C, and a fourth portion 611D.

[0115] The first part 611A is the portion constituting the top surface (the surface on the + side in the Z direction) of the frame 61, configured to extend in the direction of the optical axis (Y direction). The first part 611A is configured to cover the guide portion 80 from the + side in the Z direction.

[0116] Additionally, a connecting portion 62 is provided on the + side surface in the Z direction of the first part 611A (see reference). Figure 7 ).like Figure 10As shown, the connecting part 62 is a plate-shaped spring member (elastic member) fixed to the following parts: the + side surface of the frame 61 in the Z direction and the - side surface in the Y direction of either the supported parts 32B or 33B of the second lens unit 32 or the third lens unit 33. By making the connecting part 62 a spring member, even if the positional relationship between the frame 61 and the supported parts 32B or 33B deviates due to manufacturing tolerances, the elastic force of the spring member can absorb the deviation in positional relationship.

[0117] like Figures 8-10 As shown, the second part 611B is the part that extends from the end of the first part 611A in the Y direction (one end of the first part 611A) to the Z direction (prescribed direction) and supports the first guide shaft 81 and the second guide shaft 82.

[0118] A shaft hole 611E extending along the Y direction is formed in the second part 611B. The shaft hole 611E is provided at a position corresponding to the first guide shaft 81 described later, and allows the first guide shaft 81 to pass through.

[0119] Additionally, a shaft engaging portion 611F is formed at the - side end in the Z direction of the second part 611B. The shaft engaging portion 611F is provided at a position where it can engage with the second guide shaft 82, which will be described later, and engages with the second guide shaft 82 from the + side in the Z direction.

[0120] The third part 611C extends from the end of the first part 611A on the + side in the Y direction (the other end of the first part 611A) toward the - side in the Z direction (a predetermined direction) and supports the second guide shaft 82. More specifically, the end of the third part 611C extends to a position spaced apart from the second guide shaft 82 at a predetermined interval from the end on the - side in the Z direction.

[0121] A shaft hole 611G extending along the Y direction is formed in the third part 611C. The shaft hole 611G is located at a position corresponding to the first guide shaft 81 and allows the first guide shaft 81 to pass through.

[0122] The fourth portion 611D is a portion that extends from the end of the first portion 611A in the X direction on the + side. The fourth portion 611D is disposed throughout the first portion 611A in the Y direction and is configured to cover the guide portion 80 from the + side in the X direction.

[0123] Furthermore, an absorption section 613 is provided between the fourth part 611D and the guide section 80 (second guide shaft 82). The absorption section 613 is composed of a spring component and is disposed between the fourth part 611D and the second guide shaft 82. The absorption section 613 applies a force to the second guide shaft 82 relative to the fourth part 611D in the X direction. As a result, the absorption section 613 absorbs any deviation in the positional relationship between the frame 61 and the guide section 80.

[0124] like Figure 10 and Figure 11 As shown, the magnet holding part 612 is a part of the magnet part 614 for holding position detection, and extends from the end of the fourth part 611D in the Z direction to the X direction.

[0125] A recess 612A is formed at one end of the magnet holding part 612 in the Z direction, and the magnet part 614 is held in the recess. In addition, a position detection part 70 is provided in the portion of the housing 10 opposite to the magnet part 614.

[0126] The position detection unit 70 is, for example, a Hall element that detects the position of the frame 61 in the Y direction, and detects the position of the magnet 614 based on a predetermined reference position. The predetermined reference position is the common position of the two magnets 614A and 614B, for example, an appropriate position set at the end of the bottom wall 12 on the + or - side in the Y direction.

[0127] In the magnet section 614, one magnet 614A is arranged with its N pole facing the position detection section 70, and the other magnet 614B is arranged with its S pole facing the position detection section 70. That is, the two magnets 614A and 614B are magnetized in the direction along which the magnet section 614 faces the position detection section 70 (Z direction in this embodiment), and with different magnetic poles facing the position detection section 70.

[0128] Magnets 614A and 614B are arranged in contact with each other. Therefore, on the opposing surface 614C of the magnet section 614, which is opposite to the position detection section 70, different magnetic poles are arranged adjacent to each other.

[0129] In addition, such as Figure 12A , Figure 12B and Figure 12C As shown, the magnet portion 614 is arranged at an angle relative to the Y direction. That is, the boundary 614D between different magnetic poles in the magnet portion 614 extends at an angle relative to the optical axis (Y direction).

[0130] With this configuration, the ratio of the N pole and the S pole in the opposing portions of the position detection unit 70 and the magnet unit 614 can be changed in accordance with the movement of the frame 61 along the Z direction.

[0131] For example, such as Figure 12A As shown, when the frame 61 is in its most -side position in the Y direction, the position detection unit 70 faces the +side end of the magnet part 614 in the Y direction. The position detection unit 70 faces the portion of the magnet 614A with the larger proportion of the N pole in that end.

[0132] As the frame 61 moves towards the + side in the Y direction, the magnet 614 also moves with the frame 61, thus changing the position detection unit 70 in the opposite portion of the magnet 614. Since the magnet 614 is tilted, the ratio of the S pole in the opposite portion of the position detection unit 70 gradually increases.

[0133] like Figure 12B As shown, when the frame 61 moves to a position where the position detection unit 70 is opposite to the central part of the frame 61, the part where the ratio of the S pole (magnet 614B) and the ratio of the N pole (magnet 614A) are approximately equal becomes the part opposite to the position detection unit 70.

[0134] In addition, such as Figure 12C As shown, when the frame 61 moves to a position where the position detection unit 70 is opposite to the end of the frame 61 on the + side in the Y direction, the larger portion of the S pole (magnet 614B) becomes the portion opposite to the position detection unit 70.

[0135] Therefore, the intensity of the magnetic force detected by the position detection unit 70 can vary depending on the position of the frame 61, thus enabling the position of the frame 61 in the Y direction to be detected with good accuracy by the position detection unit 70.

[0136] Furthermore, the magnets 614 in the lens driving units 60 on both sides in the Y direction are arranged such that when they are facing each other in the Y direction, they face each other with the same magnetic poles. That is, the magnet 614A in the magnet unit 614 on the - side in the Y direction faces the magnet 614A in the magnet unit 614 on the + side in the Y direction at a position closer to the magnet 614A in the magnet unit 614 on the + side in the Y direction. Similarly, the magnet 614B in the magnet unit 614 on the - side in the Y direction faces the magnet 614B in the magnet unit 614 on the + side in the Y direction at a position closer to the magnet 614B in the magnet unit 614 on the + side in the Y direction.

[0137] With this configuration, for example, even if the frames 61 in the lens drive units 60 on both sides in the Y direction are in the closest position, the magnets 614 of the two frames 61 are difficult to attract each other, thus suppressing the positional deviation of the frames 61 in the Y direction.

[0138] In addition, such as Figure 10 and Figure 11As shown, a clamping part 63 is provided above the magnet holding part 612. The clamping part 63 has a first clamping member 631 and a second clamping member 632.

[0139] The first clamping member 631 is, for example, made of a flat metal component and is bonded to the surface of the fourth part 611D of the frame 61 in the X direction on the + side. Two protrusions D1 and D2 are provided on the surface of the fourth part 611D in the X direction on the + side.

[0140] Two protrusions D1 and D2 protrude from the surface of the fourth portion 611D and are arranged side by side in the Y direction. In this embodiment, protrusion D1 is provided near the end of the fourth portion 611D on the - side in the Y direction, and protrusion D2 is provided near the end of the fourth portion 611D on the + side in the Y direction.

[0141] The first clamping member 631 is arranged parallel to the direction of the optical axis (Y direction) and has engagement holes 631A and 631B that engage with the two protrusions D1 and D2.

[0142] The engaging hole 631A is located near the center of the first clamping member 631 in the Y direction and engages with the protrusion D1. The engaging hole 631A is sized such that it can engage with the protrusion D1 and allows the clamping member 63 (first clamping member 631) to rotate about the engaging hole 631A that engages with the protrusion D1.

[0143] The engaging hole 631B is located near the end of the first clamping member 631 on the + side in the Y direction and engages with the protrusion D2. The engaging hole 631B is formed to be sized such that it can engage with the protrusion D2 and has a spacing that allows the inner edge of the engaging hole 631B to move relative to the protrusion D2 (see reference). Figure 13B ).

[0144] like Figure 13A and Figure 13B As shown, by forming the engagement holes 631A and 631B in this way, the clamping part 63 can rotate within the range of the engagement hole 631B with the engagement hole 631A (protrusion D1) as the center. As a result, the posture of the clamping part 63 can be adjusted so that the contact part 632B of the clamping part 63 is parallel to the guide shaft.

[0145] like Figure 11 As shown, the second clamping member 632 is, for example, made of a plate-shaped metal component, and is bonded to the first clamping member 631. The second clamping member 632 has a main body portion 632A and a contact portion 632B.

[0146] The main body 632A is a portion having a plane parallel to the direction of the optical axis (Y direction) and being bonded and fixed to the first clamping member 631. Holes A1 and A2 are formed on the main body 632A for the passage of two protrusions D1 and D2 of the fourth part 611D in the frame 61.

[0147] The contact portion 632B is the part that the vibrator of the ultrasonic motor 64 contacts, and is constructed by bending the ends of both sides of the main body portion 632A in the Z direction toward the side opposite to the lens portion. Thus, the main body portion 632A connecting the pair of contact portions 632B is arranged to cover the ultrasonic motor 64 from the X direction side, and the contact portions 632B are arranged to clamp the ultrasonic motor 64 (resonance portion 641).

[0148] By configuring the clamping part 63 in this way, force is applied from the vibrator of the ultrasonic motor 64 to the contact part 632B, thereby generating a thrust in the clamping part 63 in the direction of the optical axis (Y direction). As a result, a thrust can be imparted from the clamping part 63 to the frame 61, causing the frame 61 to move along the direction of the optical axis (Y direction).

[0149] In addition, such as Figure 14 As shown, a plurality of openings C1, C2, C3, and C4 are formed in the connection portion 632C between the main body portion 632A and the contact portion 632B. The plurality of openings C1, C2, C3, and C4 are arranged in a Y-direction arrangement on both sides of the connection portion, with four openings on each side.

[0150] Of the four openings C1, C2, C3, and C4, the two openings C2 and C3 on the central side in the Y direction are configured such that, compared to the two openings C1 and C4 on both ends in the Y direction, the length in the Y direction is longer and the length in the Z direction is also longer.

[0151] Furthermore, in the connecting portion 632C, five connecting portions 632D are formed by creating four openings C1, C2, C3, and C4, which are spaced apart in the direction of the optical axis.

[0152] In this embodiment, the width of each connecting portion 632D in the Y direction (direction of the optical axis) is wider the connecting portion 632D located further outward from the center in the Y direction. Specifically, the connecting portion 632D at the very center in the Y direction is the narrowest among the five connecting portions 632D. The connecting portions 632D at both ends in the Y direction are the widest among the five connecting portions 632D. The width of the connecting portion 632D between the central connecting portion 632D and the connecting portions 632D at both ends is wider than the width of the central connecting portion 632D, but narrower than the width of the connecting portions 632D at both ends.

[0153] For the connecting part 632D (connecting part 632C), the strength is weaker closer to the end. Therefore, in this embodiment, the strength of the connecting part 632C is adjusted by changing the size of the openings C1, C2, C3, and C4 at the connecting part 632C and the width of the connecting part 632D.

[0154] By configuring it as described above, the pressing force applied by the oscillator 641B at each position of the contact portion 632B can be uniformly distributed in the Y direction. As a result, for example, when the stepless optical zoom function is activated in a device equipped with a smartphone or other portable terminal, the moving force of the clamping portion 63 can be stably generated even when the movable part moves within a relatively long range of motion.

[0155] like Figure 15 and Figure 16 As shown, the ultrasonic motor 64 is a drive source that generates the driving force for moving the frame 61, and its respective configuration part 111A (see reference) is fixedly disposed on the + side of the first wall 111 in the X direction. Figure 3 (etc.). The ultrasonic motor 64 has a resonant part 641, a piezoelectric element 642, a first electrode 643 and a second electrode 644.

[0156] The ultrasonic motor 64 on the - side in the Y direction corresponds to the "first ultrasonic motor" of the present invention, and the ultrasonic motor 64 on the + side in the Y direction corresponds to the "second ultrasonic motor" of the present invention.

[0157] The resonant portion 641, for example, is formed of a conductive material and resonates with the vibration of the piezoelectric element 642, converting this vibrational motion into linear motion of the frame 61. Specifically, based on the vibration of the piezoelectric element 642, the resonant portion 641 vibrates in an inclined direction relative to the optical axis (Y direction) and presses against the clamping portion 63, thereby generating a thrust on the frame 61 via the clamping portion 63 to move it along the optical axis. The resonant portion 641 is configured to be clamped between two contact portions 632B in the clamping portion 63. Figure 17 As shown, the resonant part 641 has a body 641A, two oscillators 641B, a protrusion 641C, and an energized part 641D.

[0158] The torso 641A is, for example, a generally rectangular portion held by a piezoelectric element 642. Two oscillators 641B extend from both ends of the torso 641A in the Z direction along the Y direction. The two oscillators 641B have symmetrical shapes, and their respective free ends contact the contact portion 632B of the clamping portion 63.

[0159] The protrusion 641C extends from the central portion of the torso 641A in the Z direction toward the + side in the Y direction. The energized portion 641D extends from the central portion of the torso 641A in the Z direction toward the side opposite to the protrusion 641C (the - side in the Y direction).

[0160] The piezoelectric element 642 is, for example, a plate-shaped vibrating element made of ceramic material, which generates vibration by applying a high-frequency voltage. Two piezoelectric elements 642 are provided, each configured to clamp the body 641A of the resonant portion 641 in the X direction.

[0161] The first electrode 643 has a clamping portion 643A for clamping the resonant portion 641 and the piezoelectric element 642, and an electrode portion 643B for which a voltage is applied. The first electrode 643 applies a voltage to the piezoelectric element 642 via the clamping portion 643A. The second electrode 644 is electrically connected to the energized portion 641D of the resonant portion 641. The first electrode 643 and the second electrode 644 are in contact with the terminal portion 130 inside the housing 10 (see reference). Figure 15 ).

[0162] Two piezoelectric elements 642 are attached to the body 641A of the resonant portion 641 and held by the first electrode 643, thereby electrically connecting them to each other. For example, one side of the power supply path is connected to the first electrode 643 and the other side is connected to the second electrode 644, thereby applying a voltage to the piezoelectric elements 642 and generating vibration.

[0163] The resonant part 641 has at least two resonant frequencies and deforms with different actions relative to each resonant frequency. In other words, the overall shape of the resonant part 641 is set so that the resonant part 641 deforms with different actions relative to the two resonant frequencies. The different actions refer to the actions of moving the frame 61 towards the + side in the Y direction through the clamping part 63 and the actions of moving the frame 61 towards the - side in the Y direction through the clamping part 63.

[0164] like Figure 18 As shown, the resonant part 641 is configured such that one of the pair of contact parts 632B of the clamping part 63 is opposite to the oscillator 641B. Therefore, when the two oscillators 641B deform, the front end of the oscillator 641B presses the contact part 632B from the side opposite to it in a direction inclined relative to the Y direction (refer to arrow A).

[0165] When each contact portion 632B is pressed in the direction of arrow A by the front end of the oscillator 641B, a reaction force is generated at each contact portion 632B to return towards the oscillator 641B. In other words, the clamping portion 63 generates a reaction force from the outside to the inside of the pair of contact portions 632B based on the contact between each oscillator 641B and the pair of contact portions 632B.

[0166] Due to the reaction force generated between the oscillator 641B and the contact portion 632B caused by the pressing of the clamping portion 63 relative to the oscillator 641B, a thrust is generated in the clamping portion 63 in the Y direction. Accompanying this, a thrust is applied to the frame 61 bonded to the clamping portion 63, causing it to move in the Y direction (see arrow B). As a result, the second lens unit 32 or the third lens unit 33 connected to the frame 61 moves in the Y direction.

[0167] Furthermore, since the contact portion 632B is configured to extend along the Y direction, it slides against the oscillator 641B and moves in the Y direction by being pressed by the oscillator 641B. Therefore, the continuous pressing of the contact portion 632B by the oscillator 641B allows the frame 61, which is bonded to the clamping portion 63, to move continuously in the Y direction. It should be noted that at a certain resonant frequency, the pressing direction of the oscillator 641B is in the direction of arrow A, and the sliding direction of the contact portion 632B is in the direction of arrow B. Conversely, at another resonant frequency, the pressing direction of the oscillator 641B is in the direction of arrow C, and the sliding direction of the contact portion 632B is in the direction of arrow D.

[0168] This driving action is performed by each of the ultrasonic motors 64 provided on each of the first walls 111 on both sides in the X direction. That is, each ultrasonic motor 64 independently drives the second lens unit 32 and the third lens unit 33 along the optical axis.

[0169] like Figure 19 As shown, these movements are guided by the guide portion 80. The guide portion 80 is disposed on the + side in the X direction, in the region of the fourth wall 114 surrounded by the first wall 111, the second wall 112, and the third wall 113. That is, the guide portion 80 is disposed on one end of the housing 10, between the second lens unit 32 and the third lens unit 33, which is located at the two ends that sandwich the optical axis O (see also...). Figure 7 ).

[0170] The guide section 80 has a first guide shaft 81 and a second guide shaft 82, both of which extend in the direction of the optical axis (Y direction) and are spaced apart from each other. The first guide shaft 81 and the second guide shaft 82 cooperate to support both frames 61 in a manner that allows them to move along the direction of the optical axis. The first guide shaft 81 and the second guide shaft 82 are made of, for example, stainless steel, and are supported by guide supports (not shown) on the second wall 112 and the third wall 113 at both ends of the optical axis (both ends in the X direction) in the housing 10.

[0171] The first guide shaft 81 is a guide shaft that guides the movement of the frame 61 by supporting the second part 611B and the third part 611C of the guided part 611 in the frame 61.

[0172] The second guide shaft 82 is arranged parallel to the first guide shaft 81 at a position further in the Z direction than the first guide shaft 81 (the side of the fourth wall 114), and guides the movement of the frame 61 by supporting the second part 611B of the guided part 611 in the (engaging) frame 61. Furthermore, the first guide shaft 81 and the second guide shaft 82 are arranged in a position in the X direction that is approximately the same as the aforementioned support shaft 50 (see reference). Figure 10 In this way, by providing two guide shafts, a first guide shaft 81 and a second guide shaft 82, for guiding the movement of the lens drive unit 60, the strength of the housing 10 can be improved.

[0173] The second guide shaft 82 is supported by a bearing portion 114A disposed on the fourth wall 114. The bearing portion 114A is positioned between the two frames 61, protruding from the fourth wall 114 in the Z direction towards the + side, and is disposed in a region near the center of the second guide shaft 82 in the Y direction. The second guide shaft 82 is bonded and fixed to the bearing portion 114A. Furthermore, the bearing portion 114A is disposed in the X direction (between the two ends of the optical axis) within a region including the center 82A of the second guide shaft 82 (see reference). Figure 10 ).

[0174] Furthermore, the bearing portion 114A is positioned to contact the second portion 611B of the frame 61. Therefore, when the frame 61 moves towards the + side in the Y direction, the second portion 611B of the frame 61 contacts the bearing portion 114A (see reference). Figure 20 Therefore, the bearing section 114A restricts the movement of the frame 61.

[0175] like Figure 21A and Figure 21B As shown, the terminal portion 130 is disposed throughout the inner and outer parts of the housing 10 through a gap formed between the first wall 111 on the + side in the X direction and the bottom wall portion 12. The terminal portion 130 has an outer terminal portion 131 that is connected to wiring from the outside (camera mounting device) and an inner terminal portion 132 that is connected to the substrate portion 140 inside the housing 10.

[0176] like Figure 22As shown, the outer terminal portion 131 is the portion disposed on the aforementioned terminal configuration portion 111C and has a plurality of external terminals 131A. The inner terminal portion 132 is the portion disposed on the substrate portion 140 and has a plurality of conductive terminals 132A and drive terminals 132B. The substrate portion 140 is disposed inside the housing 10 at a position corresponding to the fourth wall 114 on the + side in the X direction.

[0177] The conducting terminal 132A is a terminal that connects the input / output terminals of the substrate 140 to each external terminal 131A. The driving terminal 132B is a terminal that contacts the electrodes of the ultrasonic motor 64 to input and output voltage for driving the ultrasonic motor 64.

[0178] like Figure 21B and Figure 23 As shown, the substrate 140 is, for example, a circuit board having wiring for receiving the input of the driving voltage of the camera module 1 and wiring for outputting the detection signal of the position detection unit 70 to the outside. The substrate 140 is made of a flexible substrate and has a first substrate 141 and a second substrate 142. The first substrate 141 and the second substrate 142 are integrally formed. The first substrate 141 corresponds to the "first flexible substrate" of the present invention, and the second substrate 142 corresponds to the "second flexible substrate" of the present invention.

[0179] The first substrate 141 is a substrate disposed at a position corresponding to the fourth wall 114 on the + side in the X direction, and is configured to extend in the Y direction. The first substrate 141 has: an input / output terminal 141A that is connected to the inner terminal portion 132 of the terminal portion 130; and a detection terminal 141B that is connected to the position detection portion 70 (Hall element).

[0180] Input / output terminal 141A is located at a position corresponding to the inner terminal portion 132 of terminal portion 130. Detection terminal 141B is provided at the positive end and the negative end in the Y direction, respectively, corresponding to the position detection portions 70 of the two lens drive portions 60.

[0181] In addition, such as Figure 24 and Figure 25 As shown, a substrate placement portion 114B is provided in the portion of the fourth wall 114 on the + side in the X direction corresponding to the first substrate 141. The substrate placement portion 114B is provided at positions corresponding to the two ends of the first substrate 141 in the Y direction, respectively, in a recessed position on the - side in the Z direction relative to the front surface of the fourth wall 114.

[0182] Specifically, the substrate placement portion 114B is positioned such that the amount of recess relative to the front surface of the fourth wall 114 is greater than the thickness of the first substrate 141 and the second substrate 142. In other words, the front surface of the fourth wall 114 is located at a position that protrudes beyond the first substrate 141 and the second substrate 142.

[0183] In addition, the portion between the two substrate arrangement portions 114B in the fourth wall 114 is cut off, and the first substrate 141 corresponding to this portion is arranged facing the bottom wall portion 12.

[0184] Furthermore, the portion of the fourth wall 114 corresponding to the second substrate 142 is also cut off. Specifically, in the fourth wall 114 on the + side in the X direction, the portion corresponding to the connection portion between the first substrate 141 and the first extension 144A (described later) is cut off. Additionally, in the fourth wall 114 on the - side in the X direction, the portions corresponding to the boost configuration portion 143, the second extension 144B, and the ground portion 144C (described later) are cut off. Therefore, the fourth wall 114 is absent in the portion where the second substrate 142 is located, and thus, the second substrate 142 and the bottom wall portion 12 are disposed facing each other to the ground.

[0185] like Figure 21B and Figure 23 As shown, the second substrate 142 is a substrate having wiring for conducting the boost unit 150 and the lens driving unit 60, and has a boost configuration unit 143 and a substrate connection unit 144.

[0186] The boost configuration section 143 is a substrate for configuring the boost section 150, and is positioned approximately at the center of the fourth wall 114 in the Y direction, corresponding to the position on one side in the X direction. In the boost configuration section 143, the two inductors 150A and 150B, described later, are arranged side-by-side in the Y direction (see reference). Figure 27 ).

[0187] The substrate connection portion 144 is a substrate for connecting the first substrate 141 and the boost configuration portion 143, and has a first extension portion 144A, a second extension portion 144B and a ground portion 144C.

[0188] The first extension 144A is configured to extend in the X direction from the positive end of the first substrate 141 in the X direction in the Y direction. The first extension 144A is provided from a portion corresponding to the fourth wall 114 in the X direction to a portion corresponding to the fourth wall 114 in the X direction in the X direction. In addition, the first extension 144A is positioned at a position corresponding to the movement range of the third lens unit 33 in the lens section 30.

[0189] In addition, such as Figure 25As shown, the first substrate 141 is disposed on the substrate placement portion 114B as described above. Therefore, the first extension portion 144A is disposed at a position further in the Z direction than the front surface of the fourth wall 114, that is, at a position away from the lens portion 30. As a result, compared with the structure in which the substrate portion 140 is disposed on the front surface of the fourth wall 114, the first extension portion 144A of the second substrate 142 is less likely to interfere with the lens portion 30.

[0190] Furthermore, since the second substrate 142 is made of a flexible substrate, it is possible to make the second substrate 142 relatively thin, thereby making it less likely for the second substrate 142 to interfere with the lens portion 30.

[0191] Furthermore, the bottom surface of the main body 33A of the third lens unit 33 is located further towards the + side in the Z direction than the bottom surface of the main body 32A of the second lens unit 32, and is also located further towards the + side in the Z direction than the front surface of the first extension 144A of the second substrate 142. As described above, the first extension 144A of the second substrate 142 is positioned corresponding to the movement range of the third lens unit 33, that is, it is positioned so as not to interfere with the third lens unit 33.

[0192] Therefore, even if the first extension 144A of the second substrate 142 is provided within the movement range of the lens portion 30, interference between the first extension 144A and the lens portion 30 can be suppressed.

[0193] like Figure 21B and Figure 23 As shown, the second extension 144B is located at a position corresponding to the fourth wall 114 on the X-direction side, extending from the end of the first extension 144A on the X-direction side toward the Y-direction side and connecting to the boost configuration 143. Furthermore, since the camera unit 40 (camera element) is located in the second wall 112 within the housing 10, the second extension 144B extends away from the camera unit 40.

[0194] Additionally, the grounding portion 144C is a portion that is grounded through the bottom wall portion 12 in the second substrate 142. The grounding portion 144C is provided in the portion of the first extension 144A that corresponds to the fourth wall 114 on the - side in the X direction, and is configured to protrude from the end face of the first extension 144A on the + side in the Y direction to the + side in the Y direction.

[0195] In addition, such as Figure 24 As shown, the portion 12A of the bottom wall 12 corresponding to the grounding portion 144C is gold-plated. Furthermore, as described later, the back surface of the grounding portion 144C is copper-plated. Moreover, as... Figure 25 As shown, the grounding portion 144C is joined to the bottom wall portion 12 by a joining component 144D such as solder.

[0196] Therefore, the grounding portion 144C is connected to the bottom wall portion 12. As described above, the bottom wall portion 12 is grounded, so the grounding portion 144C is grounded. In addition, by applying gold plating to the bottom wall portion 12, it is easy to make the grounding portion 144C connected to the bottom wall portion 12.

[0197] In addition, such as Figure 26 As shown, a wiring portion 145 and a shielding portion 146 are provided on the back side (the side facing in the Z direction) of the second substrate 142. The wiring portion 145 has a first input wiring 145A, a first output wiring 145B, a second input wiring 145C, and a second output wiring 145D.

[0198] The first input wiring 145A, the first output wiring 145B, the second input wiring 145C, and the second output wiring 145D are arranged in a manner that follows the shape of the second substrate 142.

[0199] The first input wiring 145A and the first output wiring 145B are wirings corresponding to the inductor 150A on the - side in the Y direction, which will be described later. The second input wiring 145C and the second output wiring 145D are wirings corresponding to the inductor 150B on the + side in the Y direction, which will be described later.

[0200] Therefore, due to the positional relationship of inductors 150A and 150B, the first input wiring 145A and the first output wiring 145B are configured in the boost configuration unit 143 such that one side of the first input wiring 145C and the second output wiring 145D is longer than the second input wiring 145C and the second output wiring 145D in the Y direction.

[0201] The first input wiring 145A and the second input wiring 145C are wirings that are input voltages to inductors 150A and 150B.

[0202] The first output wiring 145B and the second output wiring 145D are wiring that outputs the output voltage obtained by boosting the input voltage through inductors 150A and 150B to the ultrasonic motor 64.

[0203] The first input wiring 145A and the first output wiring 145B are positioned such that they are surrounded by the second input wiring 145C and the second output wiring 145D. Specifically, the first input wiring 145A and the first output wiring 145B are disposed in the first extension 144A in a region further in the Y direction than the second input wiring 145C and the second output wiring 145D. Furthermore, the first input wiring 145A and the first output wiring 145B are disposed in the second extension 144B in a region further in the X direction than the second input wiring 145C and the second output wiring 145D.

[0204] The first output wiring 145B is disposed along the edge of the second substrate 142 on the - side in the Y direction or the + side in the X direction. The first input wiring 145A is disposed at a position closer to the inside of the second substrate 142 than the first output wiring 145B.

[0205] The second output wiring 145D is disposed along the edge of the second substrate 142 on the + side in the Y direction or the - side in the X direction. The second input wiring 145C is disposed at a position closer to the inside of the second substrate 142 than the second output wiring 145D.

[0206] That is, the first input wiring 145A and the second input wiring 145C are arranged in adjacent positions on the second substrate 142.

[0207] Therefore, the first output wiring 145B and the second output wiring 145D corresponding to the output voltage obtained by boosting through inductors 150A and 150B can be separated, thus reducing the influence of magnetic noise on the output voltage.

[0208] The shielding part 146 is a part used to shield the wiring part 145 from noise, and has a first shield 146A and a second shield 146B.

[0209] The first shield 146A is provided around the wiring portion 145, for example by applying copper plating, at the edge portions of the first extension 144A and the second extension 144B and the ground portion 144C.

[0210] Furthermore, as described above, the grounding portion 144C is grounded; therefore, the first shield 146A is grounded through the grounding portion 144C. This reduces the impact of noise from the outside of the second substrate 142 on the wiring portion 145.

[0211] The second shield 146B is disposed from the position in the first shield 146A in the boost configuration unit 143 corresponding to the boundary 143A of the two inductors 150A and 150B, between the first input wiring 145A and the second input wiring 145C, along the first input wiring 145A and the second input wiring 145C.

[0212] Therefore, the regions of the first input wiring 145A and the first output wiring 145B, and the regions of the second input wiring 145C and the second output wiring 145D, are separated by the second shield 146B. The second shield 146B corresponds to the "separation part" of the present invention.

[0213] As a result, the crosstalk in the two inductors 150A and 150B can be reduced.

[0214] In addition, a plurality of through holes 146C are provided in the portion corresponding to the second shield 146B. The second shield 146B is connected to the front side of the second substrate 142 through the through holes 146C.

[0215] In addition, copper plating is applied to the front side of the second substrate 142. As a result, the front side of the second substrate 142 is electrically connected to the second shield 146B, and therefore, the front side of the second substrate 142 is also grounded.

[0216] Therefore, it is possible to suppress the propagation of noise from the front side of the second substrate 142 to the wiring section 145.

[0217] like Figure 27 As shown, the boost unit 150 has two inductors 150A and 150B and a cover 151. The inductors 150A and 150B are, for example, coil elements, and are arranged side by side along the Y direction on the boost configuration unit 143. The inductor 150A on the - side of the Y direction corresponds to the lens drive unit 60 on the - side of the Y direction, and the inductor 150B on the + side of the Y direction corresponds to the lens drive unit 60 on the + side of the Y direction.

[0218] Inductors 150A and 150B are connected to the first substrate 141 and the terminal section 130 via the aforementioned wiring section 145. Inductors 150A and 150B boost the input voltage input through the wiring section 145 and supply the boosted output voltage to the ultrasonic motor 64 through the wiring section 145.

[0219] However, in structures where the inductor is not included in the housing, space needs to be provided in the camera mount for mounting the inductor. Furthermore, inductors exhibit significant individual variations; therefore, if a structure is used to mount the inductor separately from the camera module, the characteristics of the inductor used with the camera module may differ from those of the inductor mounted in the camera mount. Therefore, users need to consider the relationship with the camera module and make adjustments accordingly.

[0220] For these reasons, the camera module using the ultrasonic motor does not have an inductor structure, which makes it less user-friendly.

[0221] In contrast, in this embodiment, inductors 150A and 150B are housed within the housing 10. Therefore, there is no need to provide space for the inductors in the camera mounting device, and the user does not need to make additional adjustments based on their relationship with the camera module 1. As a result, this embodiment improves ease of use for the user.

[0222] The cover 151 is made of iron (SPCC, or generally cold-rolled steel plate), and is configured as a box shape corresponding to the area of ​​the boost configuration section 143. The cover 151 is provided to cover the two inductors 150A and 150B.

[0223] By providing the cover 151, the influence of the magnetic field generated by the inductors 150A and 150B on other components can be suppressed.

[0224] In this embodiment, with the inductors 150A and 150B disposed within the housing 10, ease of use for the user can be improved.

[0225] Furthermore, since the booster 150 is provided in the region on the X-direction side where the lens drive unit 60 is not provided, the empty space in the housing 10 can be effectively utilized.

[0226] Furthermore, since the substrate portion 140 is made of a flexible substrate, the substrate portion 140 can be made thinner overall. Therefore, the impact caused by the presence of the substrate connection portion 144 in the area where the lens portion 30 is located can be reduced.

[0227] Furthermore, since the substrate connection portion 144 does not interfere with the third lens unit 33, the impact caused by the presence of the substrate connection portion 144 in the area where the lens portion 30 is located can be further reduced.

[0228] Furthermore, since the front of the fourth wall 114 protrudes beyond the second substrate 142, it is not necessary to position the lens portion 30 offset from the + side in the Z direction to avoid interference between the lens portion 30 and the second substrate 142. As a result, the housing 10 can be miniaturized.

[0229] Furthermore, since the second substrate 142 has a second extension 144B, the boost unit 150 can be separated from the imaging unit 40. Therefore, the influence of the magnetic fields of the inductors 150A and 150B on the imaging element of the imaging unit 40 can be reduced.

[0230] It should be noted that the deviations of the two inductors 150A and 150B are not mentioned in the above embodiment; however, for example, they may be described as follows: Figure 28 The storage unit 90 shown constitutes the storage unit for storing the deviation data of the inductor.

[0231] The storage unit 90, for example, is a non-volatile memory, and is provided at any position in the housing 10, such as in the space of the second or fourth wall.

[0232] The drive control unit 100 drives the lens drive unit 60 based on the deviation data stored in the storage unit 90.

[0233] With this configuration, drive control that takes into account the deviation of the two inductors 150A and 150B can be performed.

[0234] In addition, such as Figure 29 As shown, when a digital Hall element with a built-in storage unit is used in the position detection unit 70, the storage unit may also be a storage unit 71 built into the position detection unit 70.

[0235] Furthermore, in the above embodiment, the drive control unit 100 is disposed outside the housing 10 (optical element drive device), but the present invention is not limited thereto; for example, it may be disposed as follows: Figure 30 The inductor is shown to be located inside the housing 10. Alternatively, in this case, the storage unit 101 in the drive control unit 100 can also store the deviation data of the two inductors 150A and 150B.

[0236] Furthermore, in the above embodiment, the boost unit 150 has a structure with two inductors 150A and 150B, but the present invention is not limited to this. It may also have a structure with one or more inductors, or a structure with inductors in proportion to the number of ultrasonic motors.

[0237] Furthermore, in the above embodiment, the device including the lens driving unit 60 and the boosting unit 150 is used as an optical element driving device, but the present invention is not limited to this. For example, other devices may also be configured as optical elements. Figure 2 The device of the reflection drive unit 20 shown serves as an optical element drive device.

[0238] In this case, the optical element (movable part) is a reflector 22, and an ultrasonic motor and a voltage booster are provided inside the reflective housing 21. The reflector rotates under the drive of the ultrasonic motor. Furthermore, the voltage booster supplies the input voltage to the ultrasonic motor after boosting it.

[0239] Even with this structure, it improves ease of use for users, just like devices that include lens drive units.

[0240] Furthermore, in the above embodiment, a reflector is provided in the reflection driving part, but the present invention is not limited to this, and for example, a prism may also be used.

[0241] In addition, in the above embodiment, the booster 150 has a cover 151, but the present invention is not limited to this and may not have a cover.

[0242] In addition, in the above embodiment, the second substrate 142 has a second extension 144B, but the present invention is not limited thereto, and may not have a second extension.

[0243] Furthermore, in the above embodiment, the first extension 144A is provided at a position corresponding to the movement range of the third lens unit 33, but the present invention is not limited to this, and can be provided at any position as long as it does not interfere with any lens unit.

[0244] In addition, in the above embodiment, the ground portion 144C is electrically connected to the bottom wall portion 12 by the bonding member 144D (solder), but the present invention is not limited to this. For example, the ground portion and the bottom wall portion can also be electrically connected by an adhesive made of conductive resin.

[0245] Furthermore, in the above embodiment, the portion of the fourth wall 114 corresponding to the second substrate 142 is cut off, but the present invention is not limited to this. As long as it is configured not to interfere with the lens unit, it is not necessary to cut off this portion.

[0246] In addition, in the above embodiment, the substrate portion 140 is made of a flexible substrate, but the present invention is not limited to this, and may also be made of a substrate other than a flexible substrate.

[0247] In addition, in the above embodiment, the booster 150 is disposed in the region of the fourth wall 114 on the side opposite to the lens drive 60, but the present invention is not limited thereto, and may also be disposed in the region of the fourth wall on the same side as the lens drive.

[0248] In addition, in the above embodiments, the first substrate 141 and the second substrate 142 are integrally formed, but the present invention is not limited thereto, and the first substrate and the second substrate may also be separately formed.

[0249] Furthermore, in the above embodiment, each frame 61 is provided with a position detection unit 70, but the present invention is not limited thereto. It may also have a structure having multiple position detection units 70 arranged side-by-side in the direction of the optical axis (Y direction).

[0250] Furthermore, the above embodiment employs a structure with two guide shafts, but the present invention is not limited thereto. For example, it may also have a structure with three or more guide shafts, or it may have a structure with one guide shaft.

[0251] In addition, in the above embodiment, the support shaft 50 is provided on both sides in the X direction, but the present invention is not limited to this, and the support shaft 50 may be provided only on one side in the X direction.

[0252] In addition, in the above embodiment, the side wall portion 11 and the bottom wall portion 12 in the housing 10 are formed by insert molding, but the present invention is not limited to this, and the bottom wall portion can also be bonded and fixed to the side wall portion 11.

[0253] Furthermore, the above embodiment employs a structure having two movable lenses composed of a second lens unit 32 and a third lens unit 33, but the present invention is not limited thereto. It may also have a structure having three or more movable lenses, or it may have a structure having one movable lens.

[0254] Furthermore, while the above embodiment employs a structure with four lens units, the present invention is not limited to this; any structure with at least two movable lenses can have any number of lens units. Additionally, in the case of a structure with one movable lens, there is also one lens drive unit.

[0255] In addition, in the above embodiment, a plate-shaped metal part is bent to form the clamping part 63, but the present invention is not limited to this. The main body and the contact part that form the clamping part can also be formed by separate parts.

[0256] Furthermore, in the above embodiments, the frame 61 and the clamping part 63 are composed of different components, but the present invention is not limited thereto. For example, the frame 61 and the clamping part 63 may also be integrally formed. That is, the lens driving part may also have a moving part connected to each of the lens units, which moves in the direction of the optical axis following the resonance of the resonant part and transmits the movement in the direction of the optical axis.

[0257] Furthermore, in the above embodiment, the connection portion 62 between the connecting frame 61 and the lens unit is composed of a spring component, but the present invention is not limited to this, and any component can be used as long as it is elastic.

[0258] In addition, in the above embodiment, the third part 611C of the frame 61 is arranged at a distance from the second guide shaft 82, but the present invention is not limited to this, and the third part may also support the second guide shaft.

[0259] Furthermore, the above embodiment employs a structure with a bent portion and a semi-punched hole in the bottom wall portion, but the present invention is not limited to this, and may also have a structure without a bent portion and a semi-punched hole.

[0260] Furthermore, the above embodiment employs a structure in which the resonant part 641 has two oscillators 641B, but the present invention is not limited thereto; for example, it may also have a structure with one oscillator.

[0261] Furthermore, in the above embodiments, a drive control unit, a reflection drive control unit, and a camera control unit are respectively provided, but the present invention is not limited thereto, and at least two of the drive control unit, the reflection drive control unit, and the camera control unit may also be constituted by a single control unit.

[0262] In addition, the bearing portion 114A is provided in the above embodiment, but the present invention is not limited thereto, and the bearing portion may not be provided.

[0263] In addition, the above embodiment includes an absorption section 613, but the present invention is not limited thereto, and the absorption section may not be provided.

[0264] Furthermore, for example, in the above embodiment, a smartphone as a portable terminal with a camera module 1 was described as an example of a camera-mounted device, but the present invention can be applied to a camera-mounted device having a camera module and an image processing unit that processes image information obtained by the camera module. The camera-mounted device includes information devices and transportation devices. Information devices include, for example, portable telephones with cameras, laptops, tablet terminals, portable game consoles, webcams, drones, and vehicle-mounted devices with cameras (e.g., rear-view cameras, dashcams). Transportation devices include, for example, automobiles and drones.

[0265] Figure 32A , Figure 32B This diagram represents a car V, which is a camera mounting device equipped with a vehicle camera module VC (Vehicle Camera). Figure 32A This is the front view of car V. Figure 32B This is a rear perspective view of vehicle V. Vehicle V is equipped with camera module 1 as described in the embodiment, serving as an in-vehicle camera module VC. Figure 32A and Figure 32B As shown, the vehicle-mounted camera module VC is mounted, for example, facing forward on the windshield or facing backward on the tailgate. This vehicle-mounted camera module VC is used as a vehicle-mounted camera module for rear monitoring, dashcams, collision avoidance control, autonomous driving control, etc.

[0266] Furthermore, the above embodiments are merely examples of specific implementations of the present invention, and the technical scope of the present invention should not be limited by these embodiments. That is, the present invention can be implemented in various forms without departing from its essential points or main features. For example, the shape, size, quantity, and material of the various parts described in the above embodiments are merely examples and can be appropriately modified for implementation.

[0267] The entire contents of the description, drawings and abstract of the description included in U.S. Provisional Patent Application No. 63 / 011,322, filed on April 17, 2020, are incorporated herein by reference.

[0268] Industrial applicability

[0269] The optical element driving device of the present invention is useful as an optical element driving device, camera module, and camera mounting device that can improve user ease of use.

[0270] Explanation of reference numerals in the attached figures

[0271] 1 Camera Module

[0272] 10 housing

[0273] 11 Side wall section

[0274] 12 bottom wall part

[0275] 20 Reflection Drive Unit

[0276] 21 Reflective Housing

[0277] 22 reflectors

[0278] 23 Reflection Drive Control Unit

[0279] 30 Lens Section

[0280] 31 First Lens Unit

[0281] 32 Second Lens Unit

[0282] 32A Main Body

[0283] 32B Support Section

[0284] 33 Third Lens Unit

[0285] 33A Main Body

[0286] 33B is supported by

[0287] 34 Fourth Lens Unit

[0288] 34A convex part

[0289] 40 camera units

[0290] 50 support shaft

[0291] 60 Lens Drive Unit

[0292] 61 Frame

[0293] 62 Connecting part

[0294] 63 clamping section

[0295] 64 ultrasonic motor

[0296] 70 Position Detection Department

[0297] 80 Guiding Department

[0298] 81 First Guide Shaft

[0299] 82 Second Guide Shaft

[0300] 100 Drive Control Unit

[0301] 111 First Wall

[0302] 111A Configuration Department

[0303] 111B was stuck in the joint section

[0304] 111C Terminal Configuration Section

[0305] 112 Second Wall

[0306] 112A Support Section

[0307] 112B Configuration Department

[0308] 112C Guide Support

[0309] 112D opening

[0310] 113 Third Wall

[0311] 113A Bridge Connector

[0312] 113B Support Section

[0313] 113C Guidance Support Unit

[0314] 114 Fourth Wall

[0315] 114A bearing section

[0316] 114B substrate configuration section

[0317] 121 Positioning Department

[0318] 122 bends

[0319] 123 Semi-punching

[0320] 130 terminal section

[0321] 131 outer terminal section

[0322] 131A External Terminals

[0323] 132 Inner Terminal Section

[0324] 132A conduction terminal

[0325] 132B drive terminal

[0326] 140Substrate Department

[0327] 141 First substrate

[0328] 141A Input / Output Terminals

[0329] 141B detection terminal

[0330] 142 Second substrate

[0331] 143 Boost Configuration Department

[0332] 144 substrate connection part

[0333] 144A First Extension

[0334] 144B Second Extension

[0335] 144C grounding part

[0336] 144D joint component

[0337] 145 Wiring Section

[0338] 145A First Input Wiring

[0339] 145B First Output Wiring

[0340] 145C Second Input Wiring

[0341] 145D Second Output Wiring

[0342] 146 shielding section

[0343] 146A First Shielding

[0344] 146B Second Shielding

[0345] 146C Through Hole

[0346] 150 boost section

[0347] 150A inductor

[0348] 150B Inductor

[0349] 151 Cover

[0350] 200 Camera Control Department

[0351] 611 Guided Department

[0352] 611A Part 1

[0353] 611B Part 2

[0354] 611C Part 3

[0355] 611D Part 4

[0356] 612 Magnet Holding Part

[0357] 613 Absorption Section

[0358] 614 Magnet Section

[0359] 614A magnet

[0360] 614B magnet

[0361] 614C Opposite Surface

[0362] 614D boundary

[0363] 631 First clamping component

[0364] 631A locking hole

[0365] 631B locking hole

[0366] 632 Second clamping component

[0367] 632A Main Body

[0368] 632B Contact Section

[0369] 632C connection part

[0370] 632D Connector

[0371] 641 Resonance Section

[0372] 641A torso

[0373] 641B oscillator

[0374] 641C protrusion

[0375] 641D Power Supply Section

[0376] 642 piezoelectric element

[0377] 643 First Electrode

[0378] 643A clamping part

[0379] 643B Electrode Section

[0380] 644 Second Electrode

Claims

1. An optical element driving device, which can be built into a camera mounting device, characterized in that it comprises: The movable part is able to hold the optical elements; The housing contains the movable part; The driving unit includes an ultrasonic motor, which drives the movable part relative to the housing; A boost unit, disposed within the housing, has an inductor that boosts the input voltage input to the drive unit and supplies it to the ultrasonic motor; The substrate portion is fixed to the housing and has a boost configuration portion and a first substrate connected to the boost configuration portion and having terminals thereon, wherein the inductor is disposed in the boost configuration portion; as well as A position detection unit, disposed on the first substrate, detects the position of the movable part. The ultrasonic motor has a piezoelectric element that vibrates due to the input voltage, and a resonant part that resonates with the vibration of the piezoelectric element. The inductor is covered by a cover.

2. The optical element driving device as claimed in claim 1, wherein, The portion of the housing corresponding to the location of the inductor is cut off.

3. The optical element driving device as claimed in claim 1, wherein, The resonant section includes a torso and two oscillators extending from the torso, and the piezoelectric element is disposed in the torso.

4. The optical element driving device as claimed in claim 1, wherein, The cover is configured as a box.

5. The optical element driving device as claimed in claim 4, wherein, The box shape is the shape corresponding to the area of ​​the boost configuration section.

6. The optical element driving device as claimed in claim 1, wherein, The housing has a cover component.

7. The optical element driving device as claimed in claim 1, wherein, The boost unit has a first inductor and a second inductor. The drive unit has two ultrasonic motors. The wiring connected to the first inductor and the wiring connected to the second inductor are each connected to one of the two ultrasonic motors in a separate manner.

Images