Camera module

Abstract

Provided is a camera module in which the movement of a holder for holding a lens is not hindered by a flexible printed circuit board. The camera module includes: a lens; a holding body that holds the lens; a frame surrounding the holding body; a drive mechanism that moves the holder relative to the frame; and a flexible printed circuit board provided with: a connection part connected to the holding body; a mounting part which is mounted on the frame; and a meandering part located between the connecting part and the mounting part and meandering.

Description

Technical Field

[0001] The present disclosure relates to a camera module. Background Art

[0002] Japanese Patent Publication No. 2022-163541 discloses a camera device. In the camera device, a module holder holds a camera module. In addition, a drive mechanism moves the module holder. As a result, an optical axis related to a lens body of the camera module is tilted.

[0003] The lower surface of the flexible printed circuit board is attached to the driving mechanism. The front surface of the flexible printed circuit board extends upward from the front end of the lower surface of the flexible printed circuit board, folds back and extends to the outside of the housing (Paragraphs 0009, 0017 and 0024). Summary of the invention

[0004] In the imaging device disclosed in Japanese Patent Application Laid-Open No. 2022-163541, the flexible printed circuit board may hinder the movement of the camera module.

[0005] The present invention has been made in view of the above problem. One aspect of the present disclosure provides, for example, a camera module in which the movement of a holder that holds a lens is not hindered by a flexible printed circuit board.

[0006] A camera module according to one embodiment of the present invention comprises: a lens; a retaining body that retains the lens; a frame that surrounds the retaining body; a driving mechanism that moves the retaining body relative to the frame; and a flexible printed circuit board comprising: a connecting portion that is connected to the retaining body; a mounting portion that is mounted on the frame; and a serpentine portion that is located between the connecting portion and the mounting portion and serpentines. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a perspective view schematically showing the camera module according to the first embodiment as viewed obliquely from above. Figure 2 It is a perspective view schematically showing a state of the camera module according to the first embodiment as viewed obliquely from below. Figure 3 It is an exploded perspective view schematically showing the camera module according to the first embodiment when viewed obliquely from above. Figure 4 is a cross-sectional view schematically illustrating the camera module according to the first embodiment. Figure 5 This is a perspective view schematically showing a holding body, a frame, and an FPC included in the camera module according to the first embodiment, as viewed obliquely from below. Figure 6It is a bottom view schematically showing a holding body, a frame, and an FPC included in the camera module according to the first embodiment. Figure 7 This is a perspective view schematically showing a driving mechanism included in the tilt actuator included in the camera module according to the first embodiment. Figure 8 This is a perspective view schematically showing the sensor unit, the shift actuator, and the tilt actuator included in the camera module according to the first embodiment, in a state where the sensor unit and the shift actuator are tilted in the +X direction. Fig. 9 This is a perspective view schematically showing the sensor unit, the shift actuator, and the tilt actuator included in the camera module according to the first embodiment, in a state where the sensor unit and the shift actuator are tilted in the −X direction. Fig.10 It is a bottom view schematically showing a holding body, a frame, and an FPC included in the camera module according to the second embodiment. Fig.11 It is a bottom view schematically showing a holding body, a frame, and an FPC included in the camera module according to the third embodiment. DETAILED DESCRIPTION

[0008] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In addition, in the accompanying drawings, the same or equivalent elements are denoted by the same reference numerals, and repeated descriptions are omitted.

[0009] 1. First Embodiment 1.1 Camera Module Figure 1 It is a perspective view schematically showing the camera module according to the first embodiment as viewed obliquely from above. Figure 2 It is a perspective view schematically showing a state of the camera module according to the first embodiment as viewed obliquely from below. Figure 3 It is an exploded perspective view schematically showing the camera module according to the first embodiment as viewed obliquely from above. Figure 4 is a cross-sectional view schematically illustrating the camera module according to the first embodiment.

[0010] Figures 1 to 4 The camera module 1 of the first embodiment shown in the figure is assembled in a smartphone. The camera module 1 can also be assembled in a mobile communication terminal other than a smartphone. For example, the camera module 1 can also be assembled in a feature phone, a tablet computer, etc. The camera module 1 can also be assembled in a device other than a mobile communication terminal.

[0011] The camera module 1 forms an image of an object, captures the imaged image of the object, and outputs an image signal corresponding to the captured image of the object.

[0012] As Figures 1 to 4 shown, the camera module 1 includes a lens 11, a sensor unit 12, a shift actuator 13, a tilt actuator 14, two flexible printed circuits (FPCs) 15, two connectors 16, an FPC 17, a connector 18, an FPC 19, and a connector 20.

[0013] The lens 11 condenses the light coming from an object onto the imaging surface of the sensor unit 12. Thus, the lens 11 forms an image of the object on the imaging surface of the sensor unit 12. The lens 11 has an optical axis 11p.

[0014] Here, a Z direction DZ parallel to the optical axis 11p in a state where the shift actuator 13 and a holding body 31 described later are not tilted, an X direction DX and a Y direction DY perpendicular to the optical axis 11p in a state where the shift actuator 13 and the holding body 31 described later are not tilted are defined. The X direction DX and the Y direction DY are perpendicular to each other. In addition, a +X direction DX1 as one direction of the X direction DX, a -X direction DX2 as the other direction of the X direction DX, a +Y direction DY1 as one direction of the Y direction DY, a -Y direction DY2 as the other direction of the Y direction DY, a +Z direction DZ1 as one direction of the Z direction DZ, and a -Z direction DZ2 as the other direction of the Z direction DZ are defined.

[0015] The sensor unit 12 operates using the supplied power. The sensor unit 12 captures an image of the object imaged on the imaging surface according to an input control signal. The sensor unit 12 outputs an image signal corresponding to the captured image of the object.

[0016] The sensor unit 12 is coupled to the shift actuator 13. Therefore, the sensor unit 12 and the shift actuator 13 move integrally.

[0017] The shift actuator 13 shifts the lens 11 in the X direction DX, the Y direction DY, and the Z direction DZ according to an input drive signal. Thus, the camera module 1 can perform focusing and optical image stabilization.

[0018] The shift actuator 13 is not fixed to the housing of a smartphone or the like in which the camera module 1 is assembled, but is movable.

[0019] The tilt actuator 14 tilts the shift actuator 13 in a direction from the Z direction DZ toward the X direction DX and the Y direction DY according to an input drive signal. Thus, the tilt actuator 14 tilts the sensor unit 12 and the shift actuator 13 in a direction from the Z direction DZ toward the X direction DX and the Y direction DY. Thus, the camera module 1 can perform optical image stabilization.

[0020] The tilt actuator 14 is fixed to a housing or the like of a smartphone in which the camera module 1 is incorporated.

[0021] The first ends of the two FPCs 15 are electrically and mechanically connected to the sensor unit 12. The second ends of the two FPCs 15 are electrically and mechanically connected to the two connectors 16, respectively. The FPC 15 transmits power from the two connectors 16 to the sensor unit 12, and supplies the transmitted power to the sensor unit 12. The FPC 15 transmits control signals from the two connectors 16 to the sensor unit 12, and inputs the transmitted control signals to the sensor unit 12. The FPC 15 transmits image signals output from the sensor unit 12 to the two connectors 16.

[0022] The two FPCs 15 are easily deformed, thereby preventing the two FPCs 15 from hindering the inclination of the sensor unit 12 .

[0023] By leading two FPCs 15 out of the sensor unit 12 , it is possible to suppress the FPC 15 from hindering the inclination of the sensor unit 12 , compared with the case where one FPC 15 is led out of the sensor unit 12 .

[0024] The camera module 1 may include one or more FPCs 15 , and may include one or more connectors 16 .

[0025] A first end of the FPC 17 is electrically and mechanically connected to the displacement actuator 13. A second end of the FPC 17 is electrically and mechanically connected to the connector 18. The FPC 17 transmits a driving signal from the connector 18 to the displacement actuator 13, and inputs the transmitted driving signal to the displacement actuator 13.

[0026] The FPC 17 can be easily deformed, thereby preventing the FPC 17 from hindering the inclination of the displacement actuator 13 .

[0027] A first end of the FPC 19 is electrically and mechanically connected to the tilt actuator 14. A second end of the FPC 19 is electrically and mechanically connected to the connector 20. The FPC 19 transmits a driving signal from the connector 20 to the tilt actuator 14, and inputs the transmitted driving signal to the tilt actuator 14.

[0028] The two connectors 16 , 18 , and 20 are electrically and mechanically connected to the connector of the smartphone in which the camera module 1 is incorporated.

[0029] Four FPCs consisting of two FPCs 15 , an FPC 17 , and an FPC 19 are led out from the camera module 1 .

[0030] 1.2 Displacement Actuator Figure 5This is a perspective view schematically showing a holding body, a frame, and an FPC included in the camera module according to the first embodiment, as viewed obliquely from below. Figure 6 It is a bottom view schematically showing a holding body, a frame, and an FPC included in the camera module according to the first embodiment.

[0031] like Figure 1 as well as Figures 3 to 6 As shown in FIG. 1 , the displacement actuator 13 includes a holding body 31 and a plurality of current-carrying pins 32. The displacement actuator 13 includes a driving mechanism (not shown).

[0032] The holding body 31 constitutes a movable portion that is not fixed to a housing or the like of a smartphone in which the camera module 1 is incorporated.

[0033] The retaining body 31 has a rectangular parallelepiped shape with holes. Figures 4 to 6 As shown, a hole 311 is formed in the holding body 31. The hole 311 is a circular hole. The hole 311 accommodates the lens 11. The holding body 31 holds the lens 11 accommodated in the hole 311.

[0034] like Figures 4 to 6 As shown, the retaining body 31 has an upper surface 312 , a lower surface 313 , an inner peripheral surface 314 and an outer peripheral surface 315 .

[0035] The upper surface 312 and the lower surface 313 of the holding body 31 are perpendicular to the Z direction DZ, are separated from each other in the Z direction DZ, and face the +Z direction DZ1 and the −Z direction DZ2 , respectively.

[0036] The inner circumferential surface 314 of the holder 31 extends from the inner circumference of the upper surface 312 of the holder 31 to the inner circumference of the lower surface 313 of the holder 31. The inner circumferential surface 314 is a circular surface having a central axis that coincides with the optical axis 11p. The inner circumferential surface 314 defines the hole 311 of the holder 31.

[0037] The outer peripheral surface 315 of the holding body 31 extends from the outer periphery of the upper surface 312 of the holding body 31 to the outer periphery of the lower surface 313 of the holding body 31 .

[0038] like Figure 4 and Figure 6 As shown, the outer peripheral surface 315 of the holding body 31 has a first surface 315a, a second surface 315b, a third surface 315c, and a fourth surface 315d. The first surface 315a and the second surface 315b are perpendicular to the X direction DX, away from the optical axis 11p in the +X direction DX1 and the -X direction DX2, and face the +X direction DX1 and the -X direction DX2, respectively. The third surface 315c and the fourth surface 315d are perpendicular to the Y direction DY, away from the optical axis 11p in the +Y direction DY1 and the -Y direction DY2, and face the +Y direction DY1 and the -Y direction DY2, respectively.

[0039] like Figure 6 As shown, when viewed from the -Z direction DZ2, the holder 31 has a square outer shape. The square outer shape has a first side 31a, a second side 31b, a third side 31c, and a fourth side 31d.

[0040] The first side 31a and the second side 31b of the holding body 31 are perpendicular to the X direction DX, and are spaced the same distance from the optical axis 11p in the +X direction DX1 and the -X direction DX2, and are opposite to each other. The third side 31c and the fourth side 31d of the holding body 31 are perpendicular to the Y direction DY, and are spaced the same distance from the optical axis 11p in the +Y direction DY1 and the -Y direction DY2, and are opposite to each other. The holding body 31 may have an outer shape other than a square shape.

[0041] Each of the plurality of current supply pins 32 includes an embedded portion and a protruding portion. The embedded portion is embedded in the holding body 31. The protruding portion protrudes from the lower surface 313 of the holding body 31 in the -Z direction DZ2.

[0042] The plurality of current supply pins 32 are electrically connected to the driving mechanism of the displacement actuator and the first end of the FPC 17. Thus, the driving signal transmitted through the FPC 17 can be supplied to the driving mechanism of the displacement actuator.

[0043] like Figure 5 and Figure 6 As shown, the plurality of energizing pins 32 include first energizing pins 32a1 and 32a2 and second energizing pins 32b1 and 32b2. The first energizing pins 32a1 and 32a2 are arranged along the first side 31a of the holder 31. The second energizing pins 32b1 and 32b2 are arranged along the second side 31b of the holder 31.

[0044] The drive mechanism included in the shift actuator moves the lens 11 according to the supplied drive signal. Thus, the shift actuator 13 moves the lens 11.

[0045] The driving mechanism of the displacement actuator is a voice coil motor. The driving mechanism may also be a driving mechanism other than a voice coil motor.

[0046] 1.3 Tilt actuator like Figures 1 to 6 As shown, the tilt actuator 14 includes a frame 41 and a plurality of current-carrying pins 42. The tilt actuator 14 includes a driving mechanism (not shown).

[0047] The frame 41 constitutes a fixing portion fixed to a housing or the like of a smartphone in which the camera module 1 is incorporated.

[0048] The frame 41 has a square frame shape. Figures 4 to 6As shown in FIG. 1 , a hole 411 is formed in the frame 41. The hole 411 is a square hole. The hole 411 accommodates the displacement actuator 13. Thus, the frame 41 surrounds the displacement actuator 13. Thus, the frame 41 surrounds the holding body 31 provided in the displacement actuator 13.

[0049] like Figures 4 to 6 As shown, the frame 41 has an upper end surface 412 , a lower end surface 413 , an inner peripheral surface 414 , and an outer peripheral surface 415 .

[0050] The upper end surface 412 and the lower end surface 413 of the frame 41 are perpendicular to the Z direction DZ, are separated from each other in the Z direction DZ, and face the +Z direction DZ1 and the −Z direction DZ2 , respectively.

[0051] The inner peripheral surface 414 of the frame 41 extends from the inner periphery of the upper end surface 412 of the frame 41 to the inner periphery of the lower end surface 413 of the frame 41. The inner peripheral surface 414 defines the hole 411 of the frame 41.

[0052] like Figures 4 to 6 As shown, the inner peripheral surface 414 of the frame 41 has a first surface 414a, a second surface 414b, a third surface 414c and a fourth surface 414d.

[0053] The first surface 414a and the second surface 414b of the frame 41 are perpendicular to the X direction DX, away from the optical axis 11p in the +X direction DX1 and the -X direction DX2, and face the -X direction DX2 and the +X direction DX1, respectively. The third surface 414c and the fourth surface 414d of the frame 41 are perpendicular to the Y direction DY, away from the optical axis 11p in the +Y direction DY1 and the -Y direction DY2, respectively, and face the -Y direction DY2 and the +Y direction DY1, respectively. The first surface 414a, the second surface 414b, the third surface 414c, and the fourth surface 414d are opposite to the first surface 315a, the second surface 315b, the third surface 315c, and the fourth surface 315d of the outer peripheral surface 315 of the retaining body 31, respectively, with gaps therebetween.

[0054] The outer peripheral surface 415 of the frame 41 extends from the outer periphery of the upper end surface 412 of the frame 41 to the outer periphery of the lower end surface 413 of the frame 41 .

[0055] like Figures 4 to 6 As shown, the outer peripheral surface 415 has a first surface 415a, a second surface 415b, a third surface 415c and a fourth surface 415d. The first surface 415a and the second surface 415b are perpendicular to the X direction DX, away from the optical axis 11p in the +X direction DX1 and the -X direction DX2, and face the +X direction DX1 and the -X direction DX2, respectively. The third surface 415c and the fourth surface 415d are perpendicular to the Y direction DY, away from the optical axis 11p in the +Y direction DY1 and the -Y direction DY2, and face the +Y direction DY1 and the -Y direction DY2, respectively.

[0056] like Figure 6 As shown in the figure, the frame 41 has a square outer shape when viewed from the −Z direction DZ2 in a plan view. The square outer shape has a first side 41 a, a second side 41 b, a third side 41 c, and a fourth side 41 d.

[0057] The first side 41a and the second side 41b of the frame 41 are perpendicular to the X direction DX, and are spaced the same distance from the optical axis 11p in the +X direction DX1 and the -X direction DX2, and are opposite to each other. The third side 41c and the fourth side 41d of the frame 41 are perpendicular to the Y direction DY, and are spaced the same distance from the optical axis 11p in the +Y direction DY1 and the -Y direction DY2, and are opposite to each other. The frame 41 may have an outer shape other than a square outer shape.

[0058] Each of the plurality of current-carrying pins 42 includes an embedded portion and a protruding portion. The embedded portion is embedded in the frame 41. The protruding portion protrudes from the lower end surface 413 of the frame 41 in the -Z direction DZ2.

[0059] The plurality of current supply pins 42 are electrically connected to the driving mechanism of the tilt actuator and the first end of the FPC 19. Thus, the driving signal transmitted through the FPC 19 can be supplied to the driving mechanism of the tilt actuator.

[0060] The driving mechanism included in the tilt actuator moves the displacement actuator 13 according to the supplied driving signal. As a result, the tilt actuator 14 tilts the displacement actuator 13 .

[0061] The driving mechanism of the tilt actuator may be any driving mechanism, for example, a shape memory alloy (SMA) wire actuator. The driving mechanism may also be a driving mechanism other than the SMA wire actuator.

[0062] 1.4 Insert the serpentine part between the connection part and the mounting part of the FPC. Figure 5 and Figure 6 As shown, the FPC 17 includes first connecting portions 51a1 and 51a2, second connecting portions 51b1 and 51b2, a mounting portion 52, first meandering portions 53a1 and 53a2, and second meandering portions 53b1 and 53b2.

[0063] The first connection parts 51a1 and 51a2 and the second connection parts 51b1 and 51b2 are connected to the holding body 31. The mounting part 52 is mounted on the frame 41. Thus, the holding body 31 is connected to the frame 41 via the FPC 17. The FPC 17 is deformable. Thus, the holding body 31 is supported by the FPC 17 in a state where it can be relatively displaced with respect to the frame 41.

[0064] The first meandering portion 53a1 is located between the first connecting portion 51a1 and the mounting portion 52. The first meandering portion 53a2 is located between the first connecting portion 51a2 and the mounting portion 52. The second meandering portion 53b1 is located between the second connecting portion 51b1 and the mounting portion 52. The second meandering portion 53b2 is located between the second connecting portion 51b2 and the mounting portion 52.

[0065] Each serpentine portion 53 included in the first serpentine portions 53a1, 53a2 and the second serpentine portions 53b1, 53b2 serpentines. Thus, each serpentine portion 53 can be easily deformed. Thus, the FPC 17 can be easily deformed according to the movement of the holding body 31 relative to the frame 41. Thus, it is possible to suppress the movement of the holding body 31 from being hindered by the FPC 17. Thus, the tilt actuator 14 can move the displacement actuator 13 with a small thrust.

[0066] The first serpentine portions 53a1 and 53a2 and the second serpentine portions 53b1 and 53b2 are arranged radially inward of the outer peripheral surface 415 of the frame 41. Thus, it is possible to prevent the first serpentine portions 53a1 and 53a2 and the second serpentine portions 53b1 and 53b2 from protruding from the frame 41 and making it difficult to handle the camera module 1. Thus, it is possible to prevent the first serpentine portions 53a1 and 53a2 and the second serpentine portions 53b1 and 53b2 from reducing the commercial value of the camera module 1.

[0067] Each meandering portion 53 preferably has a line width of 1.0 mm to 1.2 mm, and a thickness of 75 μm to 125 μm.

[0068] 1.5 Symmetry of FPC from the retaining body like Figure 5 and Figure 6 As shown, the FPC 17 includes first lead portions 54a1 and 54a2 and second lead portions 54b1 and 54b2.

[0069] The first lead-out portion 54a1 is located between the first connection portion 51a1 and the first meandering portion 53a1. The first lead-out portion 54a2 is located between the first connection portion 51a1 and the second meandering portion 53a2. The second lead-out portion 54b1 is located between the second connection portion 51b1 and the second meandering portion 53b1. The second lead-out portion 54b2 is located between the second connection portion 51b2 and the second meandering portion 53b2.

[0070] The first connection parts 51a1 and 51a2 are arranged along the first side 31a of the holding body 31. The second connection parts 51b1 and 51b2 are arranged along the second side 31b of the holding body 31.

[0071] The first lead-out portions 54a1 and 54a2 are connected to the first connection portions 51a1 and 51a2, respectively, and are led out from the first side 31a of the retaining body 31. When the first lead-out portions 54a1 and 54a2 are led out from the first side 31a, they cross the first side 31a from the area located radially inside the first side 31a to the area located radially outside the first side 31a. The second lead-out portions 54b1 and 54b2 are connected to the second connection portions 51b1 and 51b2, respectively, and are led out from the second side 31b of the retaining body 31. When the second lead-out portions 54b1 and 54b2 are led out from the second side 31b, they cross the second side 31b from the radially inside area of ​​the second side 31b to the radially outside area of ​​the second side 31b.

[0072] The first lead-out portion 54a1 and the second lead-out portion 54b1 are respectively led out from the first opposite side and the second opposite side opposite to each other, that is, the first side 31a and the second side 31b of the holding body 31. The first lead-out portion 54a2 and the second lead-out portion 54b2 are respectively led out from the first opposite side and the second opposite side opposite to each other, that is, the first side 31a and the second side 31b of the holding body 31. Thus, the symmetry of the X direction DX of the FPC 17 led out from the holding body 31 can be improved. Thus, the symmetry of the reaction force in the X direction DX generated by the FPC 17 can be improved.

[0073] 1.6 Symmetry of the plane shape of FPC like Figure 6 As shown, the second connecting portions 51b1 and 51b2, the second lead portions 54b1 and 54b2, and the second serpentine portions 53b1 and 53b2 have planar shapes symmetrical to the planar shapes of the first connecting portions 51a1 and 51a2, the first lead portions 54a1 and 54a2, and the first serpentine portions 53a1 and 53a2 on the YZ plane including the optical axis 11p. Thus, the symmetry of the reaction force in the X direction DX generated by the FPC 17 can be improved.

[0074] The first connecting portion 51a2, the first lead portion 54a2, the first meandering portion 53a2, the second connecting portion 51b2, the second lead portion 54b2, and the second meandering portion 53b2 have planar shapes symmetrical to the planar shapes of the first connecting portion 51a1, the first lead portion 54a1, the first meandering portion 53a1, the second connecting portion 51b1, the second lead portion 54b1, and the second meandering portion 53b1, respectively, on the XZ plane including the optical axis 11p. Thus, the symmetry of the reaction force in the Y direction DY generated by the FPC 17 can be improved.

[0075] 1.7 The relationship between the FPC lead out from the retaining body and the FPC lead out from the frame is as follows Figure 5 and Figure 6As shown, the FPC 17 includes first lead portions 55c1 and 55d1 and second lead portions 55c2 and 55d2.

[0076] The first lead-out portion 55c1 is located between the mounting portion 52 and the first meandering portion 53a1. The first lead-out portion 55d1 is located between the mounting portion 52 and the first meandering portion 53a2. The second lead-out portion 55c2 is located between the mounting portion 52 and the second meandering portion 53b1. The second lead-out portion 55d2 is located between the mounting portion 52 and the second meandering portion 53b2.

[0077] The first meandering portion 53a1 and the second meandering portion 53b1 are arranged along the third side 41c of the frame 41. The first meandering portion 53a2 and the second meandering portion 53b2 are arranged along the fourth side 41d of the frame 41.

[0078] The first lead-out portion 55c1 and the second lead-out portion 55c2 are connected to the first serpentine portion 53a1 and the second serpentine portion 53b1, respectively, and are led out from the third side 41c of the frame 41. When the first lead-out portion 55c1 and the second lead-out portion 55c2 are led out from the third side 41c, they cross the third side 41c and reach the area located radially outside the third side 41c from the area located radially inside the third side 41c. The first lead-out portion 55d1 and the second lead-out portion 55d2 are connected to the first serpentine portion 53a2 and the second serpentine portion 53b2, respectively, and are led out from the fourth side 41d of the frame 41. When the first lead-out portion 55d1 and the second lead-out portion 55d2 are led out from the fourth side 41d, they cross the fourth side 41d and reach the area located radially outside the fourth side 41d from the area located radially inside the fourth side 41d.

[0079] The first side 31a of the holding body 31 led out by the first lead-out portion 54a1 and the third side 41c of the frame 41 led out by the first lead-out portion 55c1 are the first side and the second side that are away from the optical axis 11p in the +X direction DX1 and the +Y direction DY1 of the first direction and the second direction perpendicular to each other. The second side 31b of the holding body 31 led out by the second lead-out portion 54b1 and the third side 41c of the frame 41 led out by the second lead-out portion 55c2 are the first side and the second side that are away from the optical axis 11p in the -X direction DX2 and the +Y direction DY1 of the first direction and the second direction perpendicular to each other. The first side 31a of the holding body 31 and the fourth side 41d of the frame 41 led out by the first lead-out portion 54a2 and the first lead-out portion 55d1 are the first side and the second side that are away from the optical axis 11p in the +X direction DX1 and the -Y direction DY2 of the first direction and the second direction perpendicular to each other. The second side 31b of the holding body 31 and the fourth side 41d of the frame 41 led out by the second lead-out portion 54b2 and the second lead-out portion 55d2 are the first side and the second side that are away from the optical axis 11p in the -X direction DX2 and the -Y direction DY2 of the first direction and the second direction perpendicular to each other. Thus, the intervals from the first lead-out portion 54a1 to the first lead-out portion 55c1, from the first lead-out portion 54a2 to the first lead-out portion 55d1, from the second lead-out portion 54b1 to the second lead-out portion 55c2, and from the second lead-out portion 54b2 to the second lead-out portion 55d2 can be extended. Thus, these intervals can be formed into intervals that can be easily deformed.

[0080] 1.8 The surfaces provided with the connecting portions, the meandering portions, and the mounting portions are as Figure 5 and Figure 6 shown. The first connecting portions 51a1 and 51a2 and the second connecting portions 51b1 and 51b2 are arranged on the lower surface 313 of the holding body 31 facing the -Z direction DZ2 and are connected to the lower surface 313. The first meandering portions 53a1 and 53a2 and the second meandering portions 53b1 and 53b2 are arranged on the lower end surface 413 of the frame 41 facing the -Z direction DZ2. The first meandering portions 53a1 and 53a2 and the second meandering portions 53b1 and 53b2 are not fixed to the lower end surface 413 and can be deformed on the lower end surface 413.

[0081] In this way, by arranging the first connecting portions 51a1 and 51a2, the second connecting portions 51b1 and 51b2, the first meandering portions 53a1 and 53a2, and the second meandering portions 53b1 and 53b2 on the surfaces facing the same direction, the bending of the intervals from the first connecting portion 51a1 to the first meandering portion 53a1, from the first connecting portion 51a2 to the first meandering portion 53a2, from the second connecting portion 51b1 to the second meandering portion 53b1, and from the second connecting portion 51b2 to the second meandering portion 53b2 can be reduced. Thus, these intervals can be formed into intervals that can be easily deformed.

[0082] The mounting portion 52 is mounted on the outer peripheral surface 415 of the frame 41 .

[0083] 1.9 Planar shape of the serpentine part like Figure 5 and Figure 6 As shown, each of the serpentine portions 53 included in the first serpentine portions 53 a 1 and 53 a 2 and the second serpentine portions 53 b 1 and 53 b 2 includes a plurality of linear portions 61 and at least one folded portion 62 .

[0084] The plurality of linear portions 61 of the first serpentine portion 53a1 and the second serpentine portion 53b1 arranged along the third side 41c of the frame 41 extend in a direction parallel to the third side 41c. The plurality of linear portions 61 of the first serpentine portion 53a2 and the second serpentine portion 53b2 arranged along the fourth side 41d of the frame 41 extend in a direction parallel to the fourth side 41d.

[0085] Each of the folded-back portions 62 included in the at least one folded-back portion 62 connects two end portions of two adjacent linear portions 61 included in the plurality of linear portions 61 to each other.

[0086] Thereby, a zigzag shape can be given to each meandering portion 53. Thereby, the moment required to tilt the displacement actuator 13 can be reduced.

[0087] 1.10 Foldback structure like Figure 5 and Figure 6 As shown, the first connection portion 51a1 has a linear shape and extends in the -Y direction DY2 parallel to the first side 31a of the holder 31. The first lead portion 54a1 has an L-shaped shape, and extends in the +X direction DX1 perpendicular to the first side 31a and crosses the first side 31a, and then extends in the +Y direction DY1 parallel to the first side 31a in the gap between the first surface 315a of the outer peripheral surface 315 of the holder 31 and the first surface 414a of the inner peripheral surface 414 of the frame 41. Thus, the first connection portion 51a1 and the first lead portion 54a1 form a folded structure having a U-shaped shape.

[0088] Similarly, the first connection portion 51a2 and the first lead portion 54a2 form a folded structure having a U-shape. In addition, the second connection portion 51b1 and the second lead portion 54b1 form a folded structure having a U-shape. In addition, the second connection portion 51b2 and the second lead portion 54b2 form a folded structure having a U-shape.

[0089] 1.11 Driving mechanism of the tilt actuator Figure 7This is a perspective view schematically showing a driving mechanism included in the tilt actuator included in the camera module according to the first embodiment. Figure 8 This is a perspective view schematically showing the sensor unit, the shift actuator, and the tilt actuator included in the camera module according to the first embodiment, and showing a state in which the sensor unit and the shift actuator are tilted in the +X direction. Fig. 9 This is a perspective view schematically showing the sensor unit, the shift actuator, and the tilt actuator included in the camera module according to the first embodiment, in a state where the sensor unit and the shift actuator are tilted in the −X direction.

[0090] SMA wire actuators have Figure 7 The driving mechanism 71 shown. The driving mechanism 71 includes a first SMA wire pair 81a, a second SMA wire pair 81b, a third SMA wire pair 81c and a fourth SMA wire pair 81d which are respectively opposite to the first side 31a, the second side 31b, the third side 31c and the fourth side 31d of the retaining body 31. The two SMA wires included in each SMA wire pair 81 included in the first SMA wire pair 81a, the second SMA wire pair 81b, the third SMA wire pair 81c and the fourth SMA wire pair 81d are crossed. One end of the two SMA wires is connected to the retaining body 31. The other ends of the two SMA wires are connected to the frame 41. The two SMA wires are extended and retracted according to the driving signal supplied. Thus, the driving mechanism 71 causes the retaining body 31 to move relative to the frame 41 according to the driving signal supplied. For example, as Figure 8 As shown, the driving mechanism 71 causes the holding body 31 to tilt in the +X direction DX1, as shown in FIG. Fig. 9 As shown, the holding body 31 is tilted in the -X direction DX2.

[0091] 2 Second Embodiment The following describes the differences between the second embodiment and the first embodiment. Regarding the points not described, the second embodiment also adopts the same configuration as that adopted in the first embodiment.

[0092] Fig.10 It is a bottom view schematically showing a holding body, a frame, and an FPC included in the camera module according to the second embodiment.

[0093] In a second embodiment, if Fig.10 As shown, the first serpentine portion 53a1 and the second serpentine portion 53b1 arranged along the third side 41c of the frame 41 each have a plurality of linear portions 61 extending in a direction perpendicular to the third side 41c. In addition, the first serpentine portion 53a2 and the second serpentine portion 53b2 arranged along the fourth side 41d of the frame 41 each have a plurality of linear portions 61 extending in a direction perpendicular to the fourth side 41d.

[0094] In the second embodiment as well, the moment required to tilt the displacement actuator 13 can be reduced.

[0095] 3 In the third embodiment Next, the differences between the third embodiment and the first embodiment will be described. Regarding the points not described, the third embodiment also adopts the same configuration as that adopted in the first embodiment.

[0096] Fig.11 It is a bottom view schematically showing a holding body, a frame, and an FPC included in the camera module according to the third embodiment.

[0097] In a third embodiment, if Fig.11 As shown, the plurality of linear portions 61 include a plurality of first linear portions 91 and a plurality of second linear portions 92 .

[0098] The first serpentine portion 53a1 and the second serpentine portion 53b1 disposed along the third side 41c of the frame 41 each have a plurality of first linear portions 91 extending in a direction parallel to the third side 41c. The first serpentine portion 53a1 and the second serpentine portion 53b1 each have a plurality of second linear portions 92 extending in a direction perpendicular to the third side 41c. The first serpentine portion 53a2 and the second serpentine portion 53b2 disposed along the fourth side 41d of the frame 41 each have a plurality of first linear portions 91 extending in a direction parallel to the fourth side 41d. The first serpentine portion 53a2 and the second serpentine portion 53b2 each have a plurality of second linear portions 92 extending in a direction perpendicular to the fourth side 41d.

[0099] In the third embodiment, by adjusting the ratio between the number of the plurality of first linear portions 91 and the number of the plurality of second linear portions 92 , the ratio between the moment required to tilt the displacement actuator 13 in the X direction DX and the moment required to tilt the displacement actuator 13 in the Y direction DY can be adjusted.

[0100] The present disclosure is not limited to the above-described embodiments, and may be replaced with a configuration that is substantially the same as the configuration shown in the above-described embodiments, a configuration that produces the same function and effect, or a configuration that can achieve the same purpose.

Claims

1. A camera module, characterized in that: It has: lens; a holding body that holds the lens; a frame surrounding the holding body; a drive mechanism that moves the holding body relative to the frame; and A flexible printed circuit board comprises: a connecting portion connected to the holding body; a mounting portion mounted on the frame; and a meandering portion located between the connecting portion and the mounting portion and meandering.

2. The camera module according to claim 1, wherein: The frame has an outer peripheral surface, The meandering portion is arranged on the inner side of the outer peripheral surface in the circumferential direction.

3. The camera module according to claim 1 or 2, characterized in that: The lens has an optical axis, The connecting portion is a first connecting portion, The serpentine portion is a first serpentine portion, When viewed from above in a direction parallel to the optical axis, the retaining body has an outer shape including a first opposite side and a second opposite side that are opposite to each other. The flexible printed substrate has: A first lead-out portion, located between the first connecting portion and the first serpentine portion, and led out from the first opposite side; A second connecting portion connected to the holding body; A second serpentine portion, which is located between the second connecting portion and the mounting portion and serpentines; as well as The second lead-out portion is located between the second connecting portion and the second meandering portion and is led out from the second opposite side.

4. The camera module according to claim 3, characterized in that: The first connecting portion is arranged along the first opposite side, The second connection portion is disposed along the second opposite side.

5. The camera module according to claim 3, characterized in that: The second connecting portion, the second leading portion, and the second meandering portion have planar shapes symmetrical to planar shapes of the first connecting portion, the first leading portion, and the first meandering portion on a plane including the optical axis.

6. The camera module according to claim 1 or 2, characterized in that: The lens has an optical axis, When viewed from above in a direction parallel to the optical axis, the retaining body has an outer shape including a first side, the first side being away from the optical axis in a first direction, When viewed from above in a direction parallel to the optical axis, the frame has an outer shape including a second side, the second side being away from the optical axis in a second direction perpendicular to the first direction, The flexible printed circuit board includes: one lead portion located between the connection portion and the meandering portion and led out from the first side; and another lead portion located between the mounting portion and the meandering portion and led out from the second side.

7. The camera module according to claim 1 or 2, characterized in that: The lens has an optical axis, The holding body has a surface perpendicular to the optical axis, The connecting portion is connected to the surface, The frame has an end face and an outer peripheral face, the end face is perpendicular to the optical axis and faces the same direction as the direction faced by the face, The serpentine portion is arranged on the end surface, The mounting portion is mounted on the outer peripheral surface.

8. The camera module according to claim 1 or 2, characterized in that: The meandering portion has a linear shape having a line width of 1.0 mm to 1.2 mm both inclusive and a thickness of 75 μm to 125 μm both inclusive.

9. The camera module according to claim 1 or 2, characterized in that: The lens has an optical axis, When viewed from above in a direction parallel to the optical axis, the frame has an outer shape including a side. The serpentine portion is arranged along the side, The meandering portion includes a plurality of linear portions extending in a direction parallel to the side.

10. The camera module according to claim 1 or 2, characterized in that: The lens has an optical axis, When viewed from above in a direction parallel to the optical axis, the frame has an outer shape including a side. The serpentine portion is arranged along the side, The meandering portion includes a plurality of linear portions extending in a direction perpendicular to the side.

11. The camera module according to claim 1 or 2, characterized in that: The lens has an optical axis, When viewed from above in a direction parallel to the optical axis, the frame has an outer shape including a side. The serpentine portion is arranged along the side, The meandering portion includes a plurality of first linear portions extending in a direction parallel to the side, and a plurality of second linear portions extending in a direction perpendicular to the side.

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