Optical member driving device, camera device, and electronic device

Abstract

To provide an optical member driving device, a camera device, and an electronic device in which the sound (noise) generated when a piezoelectric ultrasonic motor is in operation is suppressed.SOLUTION: An optical member driving device 5 includes a piezoelectric ultrasonic motor 20 having a piezoelectric element 210 that vibrates a drive shaft 22 in the axial direction, a carrier 40 that holds a lens body 6 which is an optical element, and two leaf springs, a first leaf spring 46 and a second leaf spring 47, which have a fixed portion fixed to the carrier 40 and a frictional engagement portion that frictionally engages the drive shaft 22 by sandwiching it between them, and movably support the carrier 40, and an anti-vibration gel 49 having one end in contact with the frictional engagement portion of the first leaf spring 46, which is one of the leaf springs, and the other end in contact with the carrier 40.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to an optical member driving device, a camera device, and an electronic device using a piezoelectric ultrasonic motor.

Background Art

[0002] A piezoelectric ultrasonic motor is known that includes a vibration generating member including a piezoelectric element that deforms when a driving voltage is applied, and a driving shaft having one end fixed to the vibration generating member and vibrating slightly in the axial direction. Further, among camera devices mounted on electronic devices, there are some provided with an optical member driving device that drives a lens by a piezoelectric ultrasonic motor. This type of optical member driving device has a support mechanism that frictionally engages with a driving shaft by the elastic force and frictional force of an elastic plate material to support a movable member, and the piezoelectric ultrasonic motor drives the movable member through this support mechanism. There has been a problem that noise is generated when the piezoelectric ultrasonic motor operates.

[0003] Conventionally, as a measure for reducing such noise, a method of optimizing the driving voltage applied to the piezoelectric element has been adopted (for example, Patent Document 1).

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, with the increase in the speed and high position accuracy of lens movement, there is a limit only by the optimization of the driving voltage as described above, and there is a problem that the noise generated when the piezoelectric ultrasonic motor operates cannot be sufficiently suppressed.

[0006] The present invention has been made in view of such problems, and an object thereof is to provide an optical member driving device, a camera device, and an electronic device in which noise generated when a piezoelectric ultrasonic motor operates is suppressed.

Means for Solving the Problem

[0007] To solve the above problems, an optical member driving device according to a preferred embodiment of the present invention includes a piezoelectric ultrasonic motor having a piezoelectric element that vibrates a drive shaft in the axial direction, a carrier that holds an optical member, and a fixed portion fixed to the carrier and a friction engagement portion that frictionally engages with the drive shaft therebetween, and two leaf springs that movably support the carrier, and an anti-vibration gel having one end in contact with the friction engagement portion of one of the leaf springs and the other end in contact with the carrier.

[0008] In this aspect, in the carrier, the anti-vibration gel may be provided on a stepped surface that connects between two opposing surfaces that face the leaf spring at different distances.

[0009] Further, a groove filled with the anti-vibration gel may be provided on the stepped surface.

[0010] Further, the friction engagement portion has a V-shape with a V base end close to the fixed portion and a V tip end far from the fixed portion, and the anti-vibration gel may have one end in contact with the V tip end and the other end in contact with the stepped surface.

[0011] Further, the anti-vibration gel may have one end in contact with the V tip end and the other end in contact with the opposing surface having a shorter distance among the two opposing surfaces.

[0012] Further, the anti-vibration gel may further have one end in contact with the V base end and the other end in contact with the opposing surface of the carrier that faces the V base end.

[0013] Further, it further includes a housing that supports the piezoelectric ultrasonic motor, and the anti-vibration gel may have one end in contact with the friction engagement portion of the other leaf spring and the other end in contact with the housing.

[0014] In addition, the carrier may have a base portion formed by protruding from the side surface of the carrier, and the base portion may have a fixing portion that fixes the fixed portion of the leaf spring, and an opposing portion with which the other end of the vibration-damping gel contacts, one end of which contacts the friction engagement portion of the leaf spring.

[0015] A camera device according to another preferred aspect of the present invention includes the optical element driving device described above.

[0016] Another preferred aspect of the present invention is an electronic device comprising the camera device described above. [Effects of the Invention]

[0017] The optical element driving device according to the present invention includes a piezoelectric ultrasonic motor having a piezoelectric element that vibrates a drive shaft in the axial direction, a carrier that holds an optical element, two leaf springs that have a fixed portion fixed to the carrier and a frictional engagement portion that frictionally engages the drive shaft by sandwiching it, and movably support the carrier, and vibration-proof gel that has one end in contact with the frictional engagement portion of one of the leaf springs and the other end in contact with the carrier. Therefore, the vibration is damped by the vibration-proof gel, and the sound (noise) generated when the piezoelectric ultrasonic motor operates is suppressed. [Brief explanation of the drawings]

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0019] As shown in FIG. 1, a camera device 8 including an optical member driving device 5 according to an embodiment of the present invention is housed in a housing of a smartphone 9.

[0020] The camera device 8 includes a lens body 6, an image sensor 7, and an optical member driving device 5 that drives the lens body 6 which is an optical member. The image sensor 7 converts light from a subject incident through the lens body 6 into an image signal and outputs it. The optical member driving device 5 drives the lens body 6 along a direction parallel to its optical axis.

[0021] Hereinafter, an XYZ orthogonal coordinate system composed of a Z axis parallel to the optical axis of the lens body 6, an X axis and a Y axis that are orthogonal to each other and orthogonal to the Z axis is assumed, and the configuration of the optical member driving device 5 will be described. Also, hereinafter, the direction of the Z axis is referred to as the Z direction, the direction of the X axis is referred to as the X direction, the direction of the Y axis is referred to as the Y direction, the side of the subject as viewed from the lens body 6 is referred to as the +Z side, and its direction is referred to as the +Z direction, and the opposite side (image sensor 7 side) is referred to as the -Z side, and its direction is referred to as the -Z direction.

[0022] As shown in FIGS. 2 and 3 , the optical element driving device 5 has a rectangular parallelepiped cover 10, a piezoelectric ultrasonic motor 20, a frame 30, a carrier 40, an FPC 50, and a base 60. The cover 10 and the base 60 are combined to form a housing, which houses the piezoelectric ultrasonic motor 20, the frame 30, the carrier 40, and the FPC 50. The cover 10, the frame 30, the carrier 40, and the base 60 have through-holes 10a, 30a, 40a, and 60a, respectively, for passing light from the subject. The lens body 6 is held in the through-hole 40a of the carrier 40. The optical element driving device 5 drives the carrier 40, which holds the lens body 6, in the Z direction by the piezoelectric ultrasonic motor 20.

[0023] The base 60 has a substantially rectangular bottom plate portion 61 that extends in the XY direction, and a side plate portion 62 that rises from the periphery of the bottom plate portion 61 toward the +Z side. A peripheral portion that is lower than the bottom plate portion 61 is provided on the outer side of the side plate portion 62. A through-hole 60a is formed in the bottom plate portion 61. Holes 63 and 64 are formed on the inner side of the side plate portion 62 at a pair of diagonal corners of the bottom plate portion 61. The base ends of a cylindrical main guide shaft 65 and an auxiliary guide shaft 66 are fixed to the holes 63 and 64, and the main guide shaft 65 and the auxiliary guide shaft 66 rise toward the +Z side. A hole 69 is also formed in the bottom plate portion 61 adjacent to the hole 63, but is not visible in FIG. 3 because it is blocked by the side plate portion 62. At a corner of the bottom plate 61 that is different from the pair of diagonal corners, the side plate 62 is provided slightly inward, and a connecting portion 67 that rises higher than the peripheral edge toward the +Z side is provided between the side plate 62 and its outer peripheral edge. In addition, a cylindrical pin 68 that protrudes in the +Z direction from the top of the side plate 62 is formed at the corner where the connecting portion 67 is provided and at the corner diagonally opposite the corner where the connecting portion 67 is provided.

[0024] The outside of the side plate portion 62 of the base 60 is surrounded by an FPC (Flexible Printed Circuits) 50. The FPC 50 has a terminal portion that is connected to the outside and a main body portion that extends in a strip shape, splitting into left and right from the terminal portion, and this main body portion covers the side plate portion 62 from the outside.

[0025] The carrier 40 has a substantially cylindrical shape and is accommodated in the housing. The lens body 6 is held within the through-hole 40a of the carrier 40. The carrier 40 has connecting portions 41 and 42 shaped such that they protrude laterally from the cylindrical side surface. As shown in FIGS. 5 and 7(a), (b), the connecting portion 41 is provided at a distance in the Z direction and has a pair of holes 41a through which the main guide shaft 65 is inserted. As shown in FIGS. 3 and 7(a), the connecting portion 42 has a notch 42a extending in the Z direction that houses the sub-guide shaft 66. The main guide shaft 65 and the sub-guide shaft 66 guide the carrier 40 to move in the Z direction. Also, a support mechanism 45 for supporting the carrier 40 by the piezoelectric ultrasonic motor 20 is provided adjacent to the holes 41a.

[0026] The frame 30 is a substantially rectangular frame body and has a connecting portion 31 extending in the -Z direction from a corner corresponding to the corner where the connecting portion 67 of the base 60 is formed. The -Z side end of the connecting portion 31 is fixed to the connecting portion 67 of the base 60. In the frame 30, holes 33 and 34 are formed at positions corresponding to the holes 63 and 64 of the base 60. The tip portions of the main guide shaft 65 and the sub-guide shaft 66 are fixed to these holes 33 and 34. Also, holes 38, 38 are formed at positions corresponding to the pins 68, 68, and the frame 30 has the pins 68, 68 inserted through the holes 38, 38 and is fixed to the top of the side plate portion 62. Also, cylindrical pins 37, 37 protruding in the +Z direction are provided adjacent to the holes 38, 38 at the same corner where the holes 38, 38 are provided. Also, at the corner where the hole 33 is provided, a recess 35 recessed toward the -Z side is provided adjacent to the hole 33. A hole 35a is provided at the center of this recess 35.

[0027] The piezoelectric ultrasonic motor 20 drives the carrier 40 in the Z direction. As shown in FIG. 4, the piezoelectric ultrasonic motor 20 includes a disk-shaped vibration generating member 21 parallel to the XY plane, a columnar drive shaft 22 having one end fixed to the center of the -Z side surface of the vibration generating member 21, and an FPC 23 connected to the vibration generating member 21. The FPC 23 is further connected to the FPC 50. The vibration generating member 21 is configured by sandwiching a metal elastic plate 211 between a pair of piezoelectric elements 210. Electrodes are formed on the front and back surfaces of each piezoelectric element 210. The electrode on the front surface side is electrically connected to the FPC 23, the electrode on the back surface side is electrically connected to the elastic plate 211, and the elastic plate 211 is further electrically connected to the FPC 23. Note that the piezoelectric element 210 may be provided only on one side surface of the elastic plate 211. Also, the vibration generating member 21 may have other shapes such as a square plate shape.

[0028] When a driving voltage of a repetitive pulse of several tens of kHz is applied between the piezoelectric element 210 and the elastic plate 211, the piezoelectric element 210 expands and contracts, but the elastic member 211 does not expand and contract. Therefore, the vibration generating member 21 repeatedly deforms into a bowl shape and its inverted shape as a whole. As a result, the drive shaft 22 makes a minute reciprocating movement, that is, a micro-vibration, in the Z direction which is its axial direction. By changing the phase of the repetitive pulse, the forward speed and the return speed of the reciprocating movement of the drive shaft 22 can be made different. Here, the phase of the repetitive pulse refers to the time ratio of the on / off of the pulse. For example, when the on-time and the off-time in the repetitive pulse are equal, the forward speed and the return speed of the reciprocating movement of the drive shaft 22 are equal. When the on-time is longer than the off-time, the forward speed is fast and the return speed is slow. When the on-time is shorter than the off-time, the forward speed is slow and the return speed is fast.

[0029] The piezoelectric ultrasonic motor 20 is supported by the base 60 and the frame 30 in a state where the drive shaft 22 is inserted through the hole 69 of the base 60 and the hole 35a of the frame 30, each fitted with a rubber bush (not shown), and the vibration generating member 21 is accommodated in the recess 35. The carrier 40 is supported by the drive shaft 22 between the hole 35a and the hole 69 via a support mechanism 45. The support mechanism 45 will be described later.

[0030] The cover 10 has a substantially rectangular top plate portion 11 corresponding to the substantially rectangular shape of the base 60 and side plate portions 12 extending in the -Z direction from the periphery of the top plate portion 11. The cover 10 has holes 17, 17 at positions corresponding to the pins 37, 37 of the frame 30. The cover 10 inserts the pins 37, 37 through the holes 17, 17 and covers the frame 30 from the +Z side. The -Z side end of the side plate portion 12 is fixed to the peripheral portion of the base 60. In this way, the optical member driving device 5 is integrated into a substantially rectangular parallelepiped shape as shown in FIG. 2.

[0031] A yoke and a Hall IC are arranged inside the side surface portion 62 of the base 60 (not shown). Magnets are arranged on the side surface portion of the carrier 40 facing the yoke and the Hall IC (not shown). The Hall IC of the base 60 detects the magnetic field of the magnet of the carrier 40 to detect the position of the carrier 40 in the Z-axis direction. The yoke and the magnet attract each other, and the carrier 40 is attracted toward the side surface portion 62 side. Due to this attractive force, the inner walls of the hole 41a and the notch portion 42a of the carrier 40 are pressed against the main guide shaft 65 and the sub-guide shaft 66 with appropriate pressure, and the posture and Z-axis direction driving of the carrier 40 become stable.

[0032] Next, the details of the support mechanism 45 will be described. As shown in FIGS. 3 and 5 to 7(a) and (b), the support mechanism 45 includes a base portion 48 formed to protrude from the side surface of the carrier 40, first and second leaf springs 46 and 47 which are two leaf springs fixed to the base portion 48 and sandwich the drive shaft 22, and a vibration-proof gel 49 having one end in contact with the first leaf spring 46 and the other end in contact with the base portion 48. The base portion 48 has a fixing portion 481 that extends from the side surface of the carrier 40 in a direction substantially orthogonal to the side surface and fixes the first and second leaf springs 46 and 47, and an opposing portion 482 that faces the first leaf spring 46 and extends from the fixing portion 481 to the connecting portion 41. The vibration-proof gel 49 is in contact with the opposing portion 482.

[0033] The first leaf spring 46 is substantially L-shaped, and the vertical bar portion of the L-shape constitutes a fixed portion to be fixed and is fixed to the fixed portion 481 of the base portion 48. The horizontal bar portion of this L-shape is provided at a distance from the opposing portion 482 of the base portion 48, and the tip portion of this horizontal bar portion forms a V-shape that is recessed toward the opposing portion 482 side. The portion that is recessed in the V-shape near the fixed portion is defined as the V base end portion 461, and the portion that returns from the position recessed far from the fixed portion to the original position is defined as the V tip end portion 462. The second leaf spring 47 is also substantially L-shaped, and the vertical bar portion of the L-shape is a fixed portion that is overlapped with the vertical bar portion of the first leaf spring 46 and fixed to the fixed portion 481 of the base portion 48. The horizontal bar portion of the second leaf spring 47 forms an I-shaped portion 471 that extends straight in an I-shape at a distance from the horizontal bar portion of the first leaf spring 46. The V base end portion 461, the V tip end portion 462 of the first leaf spring 46, and the I-shaped portion 471 of the second leaf spring 47 form a substantially triangular friction engagement portion, sandwich the drive shaft 22 inside, and press the drive shaft 22 from three sides with the elastic forces of the first leaf spring 46 and the second leaf spring 47. The first leaf spring 46 and the second leaf spring 47 support the carrier 40 movably by their frictional forces.

[0034] The opposing portion 482 that faces the V base end portion 461 and the V tip end portion 462 of the first leaf spring 46 has five surfaces, namely, a first opposing surface 483, a second opposing surface 484, a third opposing surface 485, a stepped surface 486, and a fourth opposing surface 487, from the side close to the fixed portion 481 in the present embodiment. That is, the first opposing surface 483 is a surface that faces the V base end portion 461 and is substantially parallel to the V base end portion 461. The second opposing surface 484 faces the boundary between the V base end portion 461 and the V tip end portion 462 and connects the first opposing surface 483 and the third opposing surface 485. The third opposing surface 485 is a surface that faces the V tip end portion 462 and is substantially parallel to the V tip end portion 462. The fourth opposing surface 487 is a plane that faces the V tip end portion 462 at a position farther from the V tip end portion 462 than the third opposing surface 485 and is substantially parallel to the V tip end portion 462. The stepped surface 486 is a plane that connects between the third opposing surface 485 and the fourth opposing surface 487.

[0035] On the stepped surface 486, two grooves 488, 488 extending in a direction orthogonal to the Z direction and penetrating the stepped surface 486 are formed side by side in the Z direction. The grooves 488 are provided to hold a sufficient amount of vibration damping gel 49 and prevent the vibration damping gel 49 from moving to other places. Therefore, the number and shape do not matter as long as the above effects can be achieved compared to the case where no grooves are provided.

[0036] After fixing the first leaf spring 46 and the second leaf spring 47 to the fixing portion 481 of the base 48, the vibration damping gel 49 is supplied to the stepped surface 486 so that the grooves 488 are filled with the vibration damping gel 49. Since the fourth opposing surface 487, the stepped surface 486, and the V tip portion 462 form a U-shaped shape, it is easy to supply the vibration damping gel 49. The vibration damping gel 49 contacts not only the grooves 488 but also the fourth opposing surface 487 on one hand, and on the other hand, contacts the surface of the V tip portion 462 of the first leaf spring 46 facing across the grooves 488. That is, thereby, one end of the vibration damping gel 49 contacts the V tip portion 462 of the first leaf spring 46, and the other end contacts the carrier 40. The vibration damping gel 49 may be a gel having viscoelasticity such as a silicone-based, epoxy-based, urethane-based gel, and the classification or type is not limited.

[0037] In the above configuration, when a driving voltage of a repetitive pulse of a predetermined phase is applied to the piezoelectric ultrasonic motor 20 via the FPC 50 and 23, for example, the drive shaft 22 alternately repeats an operation of moving in the -Z direction at a speed below a predetermined threshold value and an operation of returning in the +Z direction at a speed above the threshold value. In the former case of going forward, the carrier 40 follows the movement of the drive shaft 22, but in the latter case of returning, the carrier 40 does not follow. As a result, the carrier 40 is driven in the -Z direction. Also, when a driving voltage of a repetitive pulse of the reverse phase is applied to the piezoelectric ultrasonic motor 20, the carrier 40 is driven in the +Z direction.

[0038] When the piezoelectric ultrasonic motor 20 operates and the carrier 40 is driven, noise is generated between the friction engagement portion of the first leaf spring 46 and the second leaf spring 47 and the drive shaft 22. However, in this embodiment, since one end of the vibration damping gel 49 contacts the friction engagement portion and the other end contacts the carrier 40, the noise generated is suppressed because it is attenuated by the vibration damping gel 49.

[0039] As described above, the optical member driving device 5 according to this embodiment includes a piezoelectric ultrasonic motor 20 having a piezoelectric element 210 that vibrates the drive shaft 22 in the axial direction, a carrier 40 that holds the lens body 6 which is an optical member, a fixed portion fixed to the carrier 40, and the first leaf spring 46 and the second leaf spring 47 which are two leaf springs that sandwich the drive shaft 22 and have friction engagement portions that frictionally engage to movably support the carrier 40, and a vibration damping gel 49 whose one end contacts the friction engagement portion of the first leaf spring 46 which is one of the leaf springs and the other end contacts the carrier 40. Therefore, since it is attenuated by the vibration damping gel 49, the noise generated between the friction engagement portion and the drive shaft 22 when the piezoelectric ultrasonic motor 20 operates is suppressed.

[0040] Note that the vibration damping gel 49 may be provided such that one end contacts the friction engagement portion of the first leaf spring 46 and the other end contacts the carrier 40. In particular, it is desirable to provide it so as to contact the V tip portion 462. Further, in FIGS. 7(a) and 7(b), the vibration damping gel 49 appears to be only in the groove 488 on the carrier 40 side, but it may protrude from the third opposing surface 485. Furthermore, as in the modified example shown in FIG. 8, the vibration damping gel 49 may be provided such that the first leaf spring 46 side contacts both the V base end portion 461 and the V tip portion 462, and the carrier 40 side contacts all of the first opposing surface 483, the second opposing surface 484, and the third opposing surface 485 in addition to the groove 488. In this case, since it is not easy to supply the vibration damping gel 49 well after fixing the first leaf spring 46 and the second leaf spring 47 to the fixing portion 481 of the base 48, the vibration damping gel 49 may be supplied in advance before fixing. Also, of course, an intermediate state between FIGS. 7(a) and 7(b) and FIG. 8 may be acceptable. Further, among the first opposing surface 483, the second opposing surface 484, and the third opposing surface 485, grooves similar to the groove 488 may be provided on the surfaces that contact the vibration damping gel 49.

[0041] Also, as in another modified example shown in FIG. 9, the vibration damping gel 49 may be provided such that one end contacts the I portion 471 which is the friction engagement portion of the second leaf spring 47, and the other end contacts the opposing surface 620 of the side plate portion 62 of the base 60 that constitutes the housing. Grooves similar to the groove 488 may be provided on the opposing surface 620. In FIG. 9, the vibration damping gel 49 on the first leaf spring 46 - carrier 40 side is in the same state as in FIG. 8, but it may be in the same state as in FIGS. 7(a) and 7(b), or in an intermediate state.

[0042] In both the modified example shown in FIG. 8 and the modified example shown in FIG. 9, the noise generated between the friction engagement portion and the drive shaft 22 is suppressed.

[0043] Further, the vibration-isolating gel 49 should only contact the surfaces of the V tip portion 462, the V base end portion 461 of the first leaf spring 46, and the I portion 471 of the second leaf spring 47 that face the opposing portion 482 and the opposing surface 620. It is desirable to prevent contact with the surface that is frictionally engaged with the drive shaft 22. Further, by combining the optical member driving device 5 according to the present embodiment with the optimization of the conventional drive voltage, further reduction of noise can be expected.

Description of Reference Numerals

[0044] 5 Optical member driving device; 6 Lens body; 7 Image sensor; 8 Camera device; 9 Smartphone; 10 Cover; 11 Top plate portion; 12 Side plate portion; 20 Piezoelectric ultrasonic motor; 21 Vibration generating member; 210 Piezoelectric element; 211 Elastic plate body; 22 Drive shaft; 23, 50 FPC; 30 Frame; 31, 67 Connecting portion; 35 Recess; 37, 68 Pin; 40 Carrier; 41, 42 Connecting portion; 42a Notch portion; 45 Support mechanism; 46 First leaf spring; 461 V base end portion; 462 V tip portion; 47 Second leaf spring; 471 I portion; 48 Base; 481 Fixed portion; 482 Opposing portion; 483 First opposing surface; 484 Second opposing surface; 485 Third opposing surface; 486 Step surface; 487 Fourth opposing surface; 488 Groove; 49 Vibration-isolating gel; 60 Base; 61 Bottom plate portion; 62 Side plate portion; 620 Opposing surface; 65 Main guide shaft; 66 Sub-guide shaft; 10a, 30a, 40a, 60a Through hole; 17, 33, 34, 35a, 38, 41a, 63, 64, 69 Hole

Claims

1. A piezoelectric ultrasonic motor having a piezoelectric element that vibrates a drive shaft in the axial direction, a carrier that holds an optical member, two leaf springs that sandwich a fixed portion fixed to the carrier and a friction engagement portion that frictionally engages with the drive shaft to movably support the carrier, and a vibration isolation gel having one end in contact with the friction engagement portion of one of the leaf springs and the other end in contact with the carrier. An optical member driving device characterized by comprising:

2. The optical member driving device according to claim 1, wherein in the carrier, the vibration isolation gel is provided on a stepped surface connecting between two opposing surfaces that face the leaf spring at different distances.

3. The optical member driving device according to claim 2, wherein a groove for filling the vibration isolation gel is provided on the stepped surface.

4. The friction engagement portion has a V-shaped shape having a V-base end portion close to the fixed portion and a V-tip end portion far from the fixed portion. In the optical member driving device according to claim 2, one end of the vibration isolation gel is in contact with the V-tip end portion, and the other end is in contact with the stepped surface.

5. The optical member driving device according to claim 4, wherein one end of the vibration isolation gel is in contact with the V-tip end portion, and the other end is in contact with the opposing surface having a shorter distance among the two opposing surfaces.

6. The optical member driving device according to claim 5, wherein one end of the vibration isolation gel is further in contact with the V-base end portion, and the other end is in contact with the opposing surface of the carrier that faces the V-base end portion.

7. The optical member driving device according to claim 6, further comprising a housing that supports the piezoelectric ultrasonic motor. Another one end of the vibration isolation gel is in contact with the friction engagement portion of the other leaf spring, and another one of the other ends is in contact with the housing.

8. The carrier has a base portion formed to protrude from a side surface of the carrier, and the base portion has a fixing portion that fixes the fixed portion of the leaf spring and an opposing portion that the other end of the vibration isolation gel whose one end is in contact with the friction engagement portion of the leaf spring contacts. The optical member driving device according to claim 1.

9. A camera device including the optical member driving device according to claim 1.

10. An electronic device including the camera device according to claim 9.

Images