Optical unit with shake correction function and method for manufacturing optical unit with shake correction function

Abstract

To suppress increase in an oscillation load due to resistance of a flexible printed substrate when a movable body an optical module is mounted oscillates around mutually going-across two axes, and to make an arrangement space of the flexible printed substrate small.SOLUTION: An optical unit 1 with a tremor correction function causes a movable body 3 having an optical module 2 provided to oscillate around an X-axis and Y-axis orthogonal to an optical axis L. A flexible printed substrate 7 comprises: a second folding part 74 that is pulled out in a +Y direction from the movable body 3, bent in an optical axis L direction and folded once; and a first folding part 73 that is bent and extends in the +Y direction from the second folding part 74, and is folded once. Thus, even when the movable body 3 oscillates in any direction around the X-axis and Y-axis, at least one of the second folding part 74 and first folding part 73 can be readily warped, which in turn increase in oscillation load can be suppressed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an optical unit with a shake correction function that corrects shake in an optical module, and a method for manufacturing the same. [Background technology]

[0002] Some optical units mounted on mobile terminals or mobile objects are equipped with a mechanism for correcting shake by swinging or rotating a movable body on which the optical module is mounted in order to suppress distortion of captured images when the mobile terminal or mobile object is moving. Patent Document 1 discloses this type of optical unit with a shake correction function.

[0003] The optical unit with shake correction function in Patent Document 1 includes a flexible printed circuit board connected to a movable body on which an optical module is mounted. The flexible printed circuit board includes a power supply line to the optical module and a signal line for extracting signals from the optical module to the outside. The flexible printed circuit board is routed in a shape that allows the movable body to swing and rotate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2018-169499 Summary of the Invention [Problem to be solved by the invention]

[0005] In Patent Document 1, the flexible printed circuit board is routed in a U-shaped bend at the rear side of the optical module in the optical axis direction, and then drawn out radially outward from the fixed body surrounding the optical module. By providing a bent portion midway in the flexible printed circuit board, it is possible to suppress an increase in the swing load caused by resistance when the flexible printed circuit board moves in response to swinging of the movable body. However, if the bent portion of the flexible printed circuit board is located at the rear side of the optical module in the optical axis direction, the height of the optical unit with shake correction function in the optical axis direction increases, which is disadvantageous for slimming down the optical unit.

[0006] In order to reduce the thickness of an optical unit with shake correction function, the applicant of the present application has proposed pulling out a flexible printed circuit board from an optical module in a direction perpendicular to the optical axis direction and folding it back on the outer periphery of the optical module to provide a U-shaped folded portion. In addition, in order to reduce the swing load of the movable body, the applicant has proposed folding the flexible printed circuit board back not just once but multiple times.

[0007] However, simply increasing the number of times the flexible printed circuit board is folded can only suppress an increase in the swing load around an axis parallel to the direction in which the flexible printed circuit board is pulled out, but cannot suppress an increase in the swing load around an axis perpendicular to the direction in which the flexible printed circuit board is pulled out. Therefore, with a movable body that swings around two axes, there is a problem in that an increase in the swing load cannot be suppressed depending on the swing direction.

[0008] In addition, the portion where the flexible printed circuit board is folded multiple times and laminated is thick in the optical axis direction, and when the flexible printed circuit board is swung around an axis perpendicular to the direction in which it is pulled out, it is significantly warped in the optical axis direction. Therefore, in order to avoid collision between the flexible printed circuit board and other components and to suppress an increase in the swing load, it is necessary to arrange the flexible printed circuit board This requires a larger space in the optical axis direction for the flexible printed circuit board, which is a problem.

[0009] In view of these points, the object of the present invention is to suppress the increase in swing load due to the resistance of the flexible printed circuit board when the movable body on which the optical module is mounted swings around two intersecting axes, and to reduce the space required for arranging the flexible printed circuit board. [Means for solving the problem]

[0010] In order to solve the above problems, the optical unit with shake correction function of the present invention includes a movable body having an optical module, and a movable body that is movable around a first axis that intersects with an optical axis. Swingable the optical axis and the first axis, and a swing support mechanism that supports the movable body so that the movable body can swing about a second axis that intersects the optical axis and the first axis; a fixed body that supports the movable body via the swing support mechanism; a swing magnetic drive mechanism that swings the movable body about the first axis and the second axis; and a flexible printed circuit board connected to the movable body, wherein the flexible printed circuit board has a fixed part that is fixed directly or indirectly to the fixed part, a first part that is provided between a part connected to the movable body and the fixed part and extends along the movable body in the optical axis direction, and a first folded part that is provided between the first part and the fixed part and extends in a direction that intersects the optical axis and is folded back in the opposite direction.

[0011] According to the present invention, the flexible printed circuit board connected to the movable body includes a fixed portion fixed directly or indirectly to the fixed body, and the portion routed between the fixed portion and the movable body includes a first portion extending in the optical axis direction and a first folded portion extending in a direction intersecting the optical axis and folded back in the opposite direction. Therefore, when the movable body swings in either direction around the first axis or the second axis, at least one of the first portion and the first folded portion can easily bend. Therefore, when the movable body swings in either direction around the first axis or the second axis that intersect the optical axis and intersect each other, an increase in the swing load of the movable body due to the resistance of the flexible printed circuit board can be suppressed. This can suppress an increase in power consumption.

[0012] Furthermore, according to the present invention, since the first portion extends in a direction intersecting the first folded portion, the amount of warping of the first folded portion in the optical axis direction when the movable body swings is small, thereby making it possible to reduce the space required for arranging the flexible printed circuit board.

[0013] In the present invention, it is preferable that the first folded portion extends radially away from the oscillation center of the movable body, then folds back in the opposite direction and extends radially toward the oscillation center. This makes it easier to bend the side closer to the movable body, thereby reducing the resistance of the flexible printed circuit board when the movable body oscillates. Therefore, it is possible to suppress an increase in the oscillation load.

[0014] In the present invention, the first folded portion is Shake with It is preferable that the first folded portion be bent in a direction approaching the center of oscillation and then folded back in the opposite direction. This allows the first folded portion to be brought closer to the center of oscillation in the optical axis direction. This reduces the resistance of the flexible printed circuit board when the movable body oscillates around an axis that intersects with the optical axis. This prevents an increase in the oscillation load.

[0015] In the present invention, it is preferable that the first folded portion includes a first extension portion and a second extension portion that overlap when viewed from the optical axis direction, and a first spacer is disposed between the first extension portion and the second extension portion. This ensures a gap between the first extension portion and the second extension portion. Therefore, it is possible to suppress an increase in resistance and damage due to contact between flexible printed circuit boards.

[0016] In the present invention, the flexible printed circuit board preferably includes a plurality of the first folded portions. Here, including a plurality of first folded portions may mean including a plurality of folded portions folded in the same direction, or a plurality of folded portions folded in opposite directions, alternating with each other. For example, the flexible printed circuit board may be folded once and then folded again in the opposite direction. This can further reduce the resistance of the flexible printed circuit board when the movable body swings. Therefore, an increase in swing load can be suppressed.

[0017] In the present invention, it is preferable that the flexible printed circuit board has a second folded portion that extends in the optical axis direction and is folded back once in the opposite direction, and the second folded portion includes the first portion. In this way, by providing the second folded portion that extends in a direction intersecting the first folded portion in addition to the first folded portion, the resistance of the flexible printed circuit board when the movable body swings can be further reduced, thereby suppressing an increase in the swing load.

[0018] In this case, it is preferable that the second folded portion includes a third extension portion and a fourth extension portion that overlap when viewed from a direction perpendicular to the optical axis, and a second spacer is disposed between the third extension portion and the fourth extension portion. This ensures a gap between the third extension portion and the fourth extension portion. Therefore, it is possible to suppress an increase in resistance and damage due to contact between flexible printed circuit boards.

[0019] In this case, the flexible printed circuit board preferably includes a plurality of the second folded portions. Here, including a plurality of second folded portions may mean including a plurality of folded portions folded in the same direction, or a plurality of folded portions folded in opposite directions, alternating with each other. For example, the flexible printed circuit board may be folded once and then folded again in the opposite direction. This can further reduce the resistance of the flexible printed circuit board when the movable body swings. Therefore, it is possible to suppress an increase in swing load.

[0020] In the present invention, it is preferable that the flexible printed circuit board includes an extension portion that is extended from the movable body in a direction intersecting the optical axis, and that at least a portion of the second folded portion that is bent and extends from the extension portion in the optical axis direction is fixed to the movable body. In this way, the second folded portion can be maintained in a position extending in the optical axis direction. Therefore, since the second folded portion can be maintained in a position extending in a direction intersecting the first folded portion, resistance of the flexible printed circuit board when the movable body swings can be reduced.

[0021] In the present invention, the fixing portion is preferably fixed to the fixing body via a third spacer, which ensures a gap between the fixing body and the flexible printed circuit board, thereby suppressing an increase in resistance and damage due to contact between the fixing body and the flexible printed circuit board.

[0022] In the present invention, the flexible printed circuit board preferably has a slit extending in a direction intersecting the width direction, thereby reducing the resistance when the flexible printed circuit board bends, and thus suppressing an increase in the swing load of the movable body.

[0023] In the present invention, the movable body includes a first opposing portion and a second opposing portion spaced apart in a direction intersecting the optical axis, and the first portion is disposed between the first opposing portion and the second opposing portion. This makes it possible to restrict the range of movement of the first portion, thereby preventing excessive deformation of the flexible printed circuit board.

[0024] Alternatively, in the present invention, it is preferable that the movable body includes a first opposing portion and a second opposing portion spaced apart in a direction intersecting the optical axis, the first portion being disposed between the first opposing portion and the second opposing portion, the second opposing portion being disposed on the outer periphery of the first opposing portion, and the second opposing portion being disposed within a range overlapping with the second spacer when viewed from a direction perpendicular to the optical axis. This restricts the range of movement of the first portion, thereby preventing excessive deformation of the flexible printed circuit board. Furthermore, the second folded portion can move freely without being restricted by the second opposing portion except for the portion where the second spacer is provided, thereby reducing the resistance of the flexible printed circuit board when the movable body swings. Furthermore, since the range in which the second opposing portion is provided is small, the movable body can be made smaller and lighter.

[0025] In the present invention, it is preferable that the second spacer includes a third reinforcing plate fixed to the third extension portion and a fourth reinforcing plate fixed to the fourth extension portion, the movable body includes a holder surrounding the outer periphery of the optical module, the holder including grooves in which the ends of the third reinforcing plate protruding from between the third extension portion and the fourth extension portion and the fourth reinforcing plate are disposed, and the grooves include positioning portions for positioning the third reinforcing plate and the fourth reinforcing plate in the optical axis direction. This allows the third reinforcing plate and the fourth reinforcing plate to be positioned in the optical axis direction and in a direction intersecting the optical axis direction. Furthermore, by positioning the third reinforcing plate and the fourth reinforcing plate in the optical axis direction, the third extension portion and the fourth extension portion can be positioned in the optical axis direction. Therefore, variation in the bending position of the second folded portion can be suppressed, thereby suppressing variation in the position of the flexible printed circuit board routed between the second folded portion and the fixed portion in the optical axis direction.

[0026] In the present invention, the groove preferably includes a reinforcing plate holding portion into which the end of the third reinforcing plate and the end of the fourth reinforcing plate fit, and a guide portion whose groove width increases toward the opposite side from the reinforcing plate holding portion. This allows the third and fourth reinforcing plates to be inserted into the guide portion while bending the second folded portion. Furthermore, the second folded portion can be completely folded by inserting the third and fourth reinforcing plates from the guide portion into the reinforcing plate holding portion. Therefore, the second folded portion can be easily folded and positioned.

[0027] In the present invention, it is preferable that the end of the third reinforcing plate and the end of the fourth reinforcing plate are press-fitted into the reinforcing plate holding portion. This can prevent the positions of the third reinforcing plate and the fourth reinforcing plate from varying in a direction intersecting the optical axis direction, and can prevent the position of the second folded portion from varying in a direction intersecting the optical axis direction. Furthermore, because the third reinforcing plate and the fourth reinforcing plate can be held in the groove portion, it is possible to prevent the position of the second folded portion from shifting.

[0028] In the present invention, it is preferable that the flexible printed circuit board has a bent portion including the first portion and a second portion bent from the first portion in a direction intersecting the optical axis, and that a shape-retaining component that maintains the shape of the bent portion is fixed to the bent portion. This prevents the bent portion from opening over time, thereby suppressing changes in the shape of the flexible printed circuit board over time and thus changes in the initial position of the movable body. This reduces adverse effects on the characteristics of the optical unit with shake correction function. Furthermore, since there is no need to plastically deform the flexible substrate to prevent the bent portion from opening, damage to the bending position can be reduced. This reduces fatigue breakage of wiring on the substrate due to bending.

[0029] In the present invention, the shape-retaining component includes a first plate portion fixed to the first portion; and a second plate portion extending in a direction intersecting the first plate portion and fixed to the second portion. This allows the shape-retaining component to be made thinner and requires less space for installation. Therefore, interference between the shape-retaining component and the movable body or the fixed body can be suppressed.

[0030] In the present invention, the bent plate preferably includes a first notch formed at both ends of an edge of the first plate portion opposite the second plate portion, and a second notch formed at both ends of an edge of the second plate portion opposite the first plate portion. This can prevent an increase in the spring constant of the flexible printed circuit board due to the attachment of the bent plate, thereby reducing adverse effects on shake correction.

[0031] In the present invention, the bent plate preferably has an opening, which can reduce the weight of the bent plate and can also be used as an adhesive reservoir.

[0032] In the present invention, the bent plate is preferably disposed on the inner side of the bent portion. In this way, the bent plate can be disposed on the opposite side of the movable body, thereby preventing the bent plate from interfering with the movable body.

[0033] Next, the present invention provides a method for manufacturing the optical unit with a shake correction function, wherein a third reinforcing plate is fixed to a portion of the flexible printed circuit board that constitutes the third extension portion before the second folded portion is folded back, and a fourth reinforcing plate is fixed to a portion of the flexible printed circuit board that constitutes the fourth extension portion, and the third reinforcing plate and the fourth reinforcing plate are abutted against each other in a direction intersecting with the optical axis. The aforementioned The third reinforcing plate and the fourth reinforcing plate are aligned in the optical axis direction. The second folded portion is folded at a preset bending position. In this way, by using the third reinforcing plate and the fourth reinforcing plate, the second folded portion can be easily folded with high precision at a preset folding position. Furthermore, since the third reinforcing plate and the fourth reinforcing plate can be used as the second spacer, the second spacer can be easily disposed between the third extension portion and the fourth extension portion.

[0034] In the present invention, it is preferable that the movable body includes a holder surrounding the outer periphery of the optical module, and that the positions of the third reinforcing plate and the fourth reinforcing plate in the optical axis direction are aligned by inserting the ends of the third reinforcing plate and the fourth reinforcing plate into grooves formed in the holder and abutting the ends of the third reinforcing plate and the fourth reinforcing plate against positioning portions provided in the grooves. In this way, the positions of the third reinforcing plate and the fourth reinforcing plate in the optical axis direction can be easily aligned. Furthermore, because the third reinforcing plate and the fourth reinforcing plate can be held by the grooves, the second folded portion can be maintained in a folded shape.

[0035] In the present invention, it is preferable to insert the ends of the third reinforcing plate and the fourth reinforcing plate into the grooves to align their positions in the optical axis direction, and then pour adhesive into the grooves. This allows the third reinforcing plate and the fourth reinforcing plate to be fixed in the grooves. Therefore, it is possible to prevent or suppress the second folded portion from coming out of the grooves, and to prevent or suppress the second folded portion from shifting in position. [Effects of the Invention]

[0036] According to the present invention, the flexible printed circuit board connected to the movable body has a fixed part that is fixed directly or indirectly to the fixed body, and the part routed between the fixed part and the movable body has a first part extending in the optical axis direction and a first folded part that extends in a direction intersecting the optical axis and is folded back in the opposite direction. Therefore, when the movable body swings in either direction around the first axis or the second axis, at least one of the first part and the first folded part can be easily deflected. Therefore, when the movable body swings in either direction around the first axis or the second axis that intersects the optical axis, an increase in the swing load of the movable body due to the resistance of the flexible printed circuit board can be suppressed. Therefore, an increase in power consumption can be suppressed. In addition, the first folded part Since the flexible printed circuit board has not only a first portion but also a second portion that extends in a direction intersecting the first folded portion, the amount of bending of the first folded portion in the optical axis direction when the movable body swings is small, which makes it possible to reduce the space required for arranging the flexible printed circuit board. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a perspective view of an optical unit with a shake correction function to which the present invention is applied. [Figure 2] 2 is a partial cross-sectional view of the optical unit with shake correction function in FIG. 1 (a partial cross-sectional view taken along the line AA in FIG. 1). [Figure 3] FIG. 2 is a perspective view of a flexible printed circuit board. [Figure 4] FIG. 2 is a development view of a flexible printed circuit board before assembly. [Figure 5] FIG. 10 is a partial cross-sectional view showing the holding structure of the second folded portion. [Figure 6] 1 is an explanatory diagram of an arrangement space of a flexible printed circuit board to which the present invention is applied. [Figure 7] FIG. 10 is an explanatory diagram of the arrangement space of a flexible printed circuit board according to a comparative example; [Figure 8] FIG. 10 is an explanatory diagram of a flexible printed circuit board according to a first modified example. [Figure 9] FIG. 10 is an explanatory diagram of a flexible printed circuit board according to a second modified example. [Figure 10] FIG. 10 is an explanatory diagram of a flexible printed circuit board according to a third modified example. [Figure 11] FIG. 11 is a perspective view of a flexible printed circuit board and a movable body according to a fourth modified example. [Figure 12] FIG. 11 is an exploded perspective view of a flexible printed circuit board and a movable body according to a fourth modified example. [Figure 13] FIG. 11 is a bottom view of a flexible printed circuit board and a movable body according to a fourth modified example. [Figure 14] FIG. 4 is a cross-sectional view of a third reinforcing plate, a fourth reinforcing plate, and a groove portion. [Figure 15] FIG. 10 is an explanatory diagram of a step of folding and positioning the second folded portion. [Figure 16] FIG. 2 is a perspective view of a bending portion and a shape-retaining part of the flexible printed circuit board. [Figure 17] 10 is a perspective view of a bent portion of a flexible printed circuit board and a shape-retaining part of a modified example. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0038] An embodiment of an optical unit 1 with shake correction function to which the present invention is applied will be described below with reference to the drawings. In this specification, the three axes X, Y, and Z are mutually orthogonal directions, with one side in the X-axis direction indicated as +X and the other side as -X, one side in the Y-axis direction indicated as +Y and the other side as -Y, and one side in the Z-axis direction indicated as +Z and the other side as -Z. The Z-axis direction coincides with the optical axis L direction of the optical module 2. Furthermore, the -Z direction is the rear side (image side) of the optical axis L direction, and the +Z direction is the front side (subject side) of the optical axis L direction.

[0039] (Overall composition) FIG. 1 is a perspective view of an optical unit 1 with shake correction function to which the present invention is applied. FIG. 2 is a partial cross-sectional view of the optical unit 1 with shake correction function of FIG. 1 (a partial cross-sectional view taken along the line AA in FIG. 1). The optical unit 1 with shake correction function has an optical module 2 equipped with optical elements such as lenses. The optical unit 1 with shake correction function is used in optical devices such as camera-equipped mobile phones and dashcams, as well as optical devices such as action cameras and wearable cameras mounted on moving objects such as helmets, bicycles, and radio-controlled helicopters. In such optical devices, if the optical device shakes during shooting, the captured image will be distorted. To prevent tilting of the captured image, the optical unit 1 with shake correction function corrects the tilt of the optical module 2 based on the acceleration, rotational speed, amount of shake, etc. detected by a detection means such as a gyroscope.

[0040] The optical unit 1 with shake correction function includes a movable body 3 on which an optical module 2 is mounted, a swing support mechanism 4 that swingably supports the movable body 3, a fixed body 5 that supports the movable body 3 via the swing support mechanism 4, a swing magnetic drive mechanism 6 that swings the movable body 3 relative to the fixed body 5, and a flexible printed circuit board 7 that is connected to the movable body 3. The flexible printed circuit board 7 has a connector part 8 for connection to an external device at the end opposite to the end connected to the movable body 3. The end where the connector section 8 is provided is drawn out from the fixed body 5 to the front side in the optical axis L direction (+Z direction).

[0041] The optical unit 1 with shake correction function performs shake correction by swinging the movable body 3 around two axes (X-axis and Y-axis) that intersect with the optical axis L (Z-axis) and that also intersect with each other. By performing shake correction around the X-axis and the Y-axis, shake correction in the pitching (vertical shaking) direction and shake correction in the yawing (horizontal shaking) direction can be performed.

[0042] (swinging support mechanism) The movable body 3 is supported by the swing support mechanism 4 so as to be swingable about a first axis R1 perpendicular to the optical axis L (Z-axis), and also swingable about a second axis R2 perpendicular to the optical axis L and the first axis R1. The first axis R1 and the second axis R2 are inclined at 45 degrees with respect to the X-axis and the Y-axis. By combining the rotation about the first axis R1 and the rotation about the second axis R2, the movable body 3 can swing about the X-axis and the Y-axis. Therefore, the movable body 3 is supported by the swing support mechanism 4 so as to be swingable about the X-axis and the Y-axis.

[0043] The swing support mechanism 4 includes a first swing support member 41 provided at a diagonal position on the first axis R1 of the movable body 3, a second swing support member 42 provided at a diagonal position on the second axis R2 of the fixed body 5, and a movable frame (not shown). The movable frame is, for example, a leaf spring, and includes two fulcrum members provided at diagonal positions on the first axis R1 and two fulcrum members provided at diagonal positions on the second axis R2. By arranging these four fulcrum members on the first swing support member 41 and the second swing support member 42, the movable body 3 is supported via the movable frame so as to be swingable about the first axis R1 and the second axis R2. The swing center P of the movable body 3 is the intersection of the first axis R1 and the second axis R2.

[0044] (Magnetic drive mechanism for swinging) The magnetic driving mechanism 6 for oscillation includes a first magnetic driving mechanism 6X that rotates the movable body 3 around the X-axis and a second magnetic driving mechanism 6Y that rotates the movable body 3 around the Y-axis. The first magnetic driving mechanism 6X and the second magnetic driving mechanism 6Y each include a magnet provided on the movable body 3 and a coil provided on the fixed body 5. The coil and magnet of the first magnetic driving mechanism 6X face each other in the Y-axis direction, and the coil and magnet of the second magnetic driving mechanism 6Y face each other in the X-axis direction. The first magnetic driving mechanism 6X generates a magnetic driving force around the X-axis when current is applied to its coil. The second magnetic driving mechanism 6Y generates a magnetic driving force around the Y-axis when current is applied to its coil.

[0045] (fixed body) The fixed body 5 includes an outer frame 50 that surrounds the movable body 3, and a wire accommodating portion 51 that protrudes from the rear (-Z direction) portion of the outer frame 50 in the optical axis L direction toward the outer periphery. In this embodiment, the outer frame 50 is rectangular when viewed in the optical axis L direction, and the wire accommodating portion 51 protrudes from the outer frame 50 in the +Y direction. The outer frame 50 and the wire accommodating portion 51 have approximately the same width in the X-axis direction. The outer frame 50 includes side walls 501 and 502 that face each other in the X-axis direction, and side walls 503 and 504 that face each other in the Y-axis direction. The outer frame 50 includes an opening 52 that is formed by cutting out the center portion in the X-axis direction of the side wall 503 in the +Y direction. The opening 52 faces the wire accommodating portion 51.

[0046] The flexible printed circuit board 7 is drawn out to the +Y direction side of the movable body 3 arranged inside the outer frame part 50, and extends from the opening part 52 into the inside of the wire accommodating part 51. The wire accommodating part 51 includes frame parts 511 and 512 extending in the +Y direction from the side wall parts 501 and 502 on both sides in the X-axis direction of the outer frame part 50, respectively, a frame part 513 extending in the X-axis direction from the +Y direction end of the frame part 511 to the +Y direction end of the frame part 512, and an upper plate part 514 covering the +Z direction of the space surrounded by the frame parts 511, 512, and 513. The upper plate part 514 includes a rectangular cutout part 53 cut out in the +Y direction from the edge in the -Y direction with the same width as the opening part 52. The flexible printed circuit board 7 is After being routed inside the wiring housing 51 , the wiring is bent forward in the optical axis L direction (+Z direction) and is led out of the wiring housing 51 through the cutout 53 .

[0047] (movable body) The movable body 3 includes an optical module 2 and a holder 30 that holds the optical module 2. A first swing support part 41 of the swing support mechanism 4 is provided at a diagonal position on the first axis R1 of the holder 30. The holder 30 includes an inner holder 31 that is provided with a holding hole in which the optical module 2 is placed, and a frame-shaped outer holder 32 that surrounds the inner holder 31. The inner holder 31 is fixed to the outer holder 32, and the first swing support part 41 is provided on the outer holder 32.

[0048] The outer holder 32 has a first frame portion 33 disposed in the +Y direction of the inner holder 31. The outer holder 32 is in contact with the inner holder 31 at a portion that surrounds the inner holder 31 in three directions, i.e., the -Y direction, the +X direction, and the -X direction. On the other hand, the first frame portion 33 of the outer holder 32 has a central portion in the X-axis direction that protrudes in the +Y direction, The first frame portion 33 and A gap S is provided between the side surface 311 of the inner holder 31 in the +Y direction and the first frame portion 33 (see FIG. 2). As will be described later, a folded portion of the flexible printed circuit board 7 is disposed in the gap S between the side surface 311 of the inner holder 31 and the first frame portion 33.

[0049] The outer holder 32 has a notch 34 formed by cutting out a portion of the first frame 33 on the rear side (-Z direction) in the optical axis L direction. The flexible printed circuit board 7 is bent in the +Y direction inside the first frame 33 and extends to the wiring accommodating section 51 through the notch 34.

[0050] (flexible printed circuit board) FIG. 3 is a perspective view of the flexible printed circuit board 7, and FIG. 4 is a development view of the flexible printed circuit board 7 before assembly. FIG. 4(a) is a plan view of the flexible printed circuit board 7 as seen from the front side (+Z direction) in the optical axis L direction, FIG. 4(b) is a side view of the flexible printed circuit board 7, and FIG. 4(c) is a bottom view of the flexible printed circuit board 7 as seen from the rear side (-Z direction) in the optical axis L direction. In FIGS. 3 and 4, the outline shapes of the optical module substrate 20 connected to the end of the flexible printed circuit board 7 and the inner holder 31 to which the optical module substrate 20 is fixed are indicated by dashed lines. The movable body 3 includes the optical module substrate 20 on which the imaging element and signal processing circuit of the optical module 2 are mounted, and the flexible printed circuit board 7 is connected to the optical module substrate 20. The flexible printed circuit board 7 includes a power supply line to the optical module 2 and a signal line for extracting signals from the optical module 2 to the outside.

[0051] As shown in FIG. 4, the flexible printed circuit board 7 before assembly extends linearly. The flexible printed circuit board 7 includes a flexible substrate 70, a connector portion 8 provided at an end portion of the flexible substrate 70 in the longitudinal direction, and a reinforcing plate 80 fixed to the flexible substrate 70. The flexible substrate 70 includes a wide portion 71 provided at a position closer to the connector portion 8 than the center in the longitudinal direction, and a slit 72 extending in a direction perpendicular to the width direction at the center of the width direction of the region on the optical module substrate 20 side (movable body 3 side) of the wide portion 71. The slit 72 is a through portion that penetrates the flexible substrate 70. Therefore, the flexible substrate 70 is divided into two narrow flexible substrate portions in the area where the slit 72 is provided.

[0052] The reinforcing plate 80 includes a first reinforcing plate 81 fixed to the wide portion 71, two second reinforcing plates 82 fixed to both sides of the slit 72 in the width direction, and two third reinforcing plates 83 fixed to positions closer to the optical module substrate 20 side (movable body 3 side) than the slit 72. The third reinforcing plates 83 are arranged side by side in the width direction of the flexible substrate 70, similar to the second reinforcing plates 82. As will be described later, the reinforcing plates 80 function as spacers to prevent contact between flexible substrates 70 or between the flexible substrate 70 and other members.

[0053] 2 and 3, the shape of the flexible printed circuit board 7 after assembly is such that it is bent in the +Y direction of the movable body 3 to fit into the wiring housing 51, and then pulled out from the cutout 53 of the wiring housing 51 to the front side in the optical axis L direction (+Z direction). In this embodiment, the shape of the flexible printed circuit board 7 after assembly is a shape that has two folded portions that extend in directions that intersect with each other. One of the two folded portions is a first folded portion 73 that extends in a direction that intersects with the optical axis L (the Y-axis direction), and the other is a second folded portion 74 that extends in the optical axis L direction.

[0054] In this embodiment, the first folded portion 73 extends in a direction (Y-axis direction) along an imaginary plane (XY plane) including the X-axis (first axis) and Y-axis (second axis), which are oscillation axes of the movable body 3, and extends in a direction perpendicular to the optical axis L. The first folded portion 73 also extends in a direction (+Y direction) radially away from the oscillation center P of the movable body 3, then bends forward in the optical axis L direction (+Z direction), is folded back in the opposite direction, and extends in a direction (-Y direction) radially approaching the oscillation center P. The first folded portion 73 is located on the rear side (-Z direction) of the oscillation center P of the movable body 3 in the optical axis L direction, and extends in a direction (+Y direction) radially away from the oscillation center P of the movable body 3, then bends in the optical axis L direction toward the oscillation center P (+Z direction), and is folded back in the opposite direction.

[0055] The flexible printed circuit board 7 is bent at a substantially right angle immediately after being pulled out in the +Y direction from the movable body 3, extends along the movable body 3 in the direction of the optical axis L, and then is folded back. Flexible printed circuit board 7 It is provided at a position immediately after being pulled out from the movable body 3. The second folded portion 74 is formed by folding back the portion of the flexible printed circuit board 7 on the optical module substrate 20 side (movable body 3 side) from the slit 72.

[0056] The flexible printed circuit board 7 is bent at a substantially right angle from the second folded portion 74 and extends in the +Y direction, extending to the vicinity of the frame portion 513 located at the end of the wiring accommodating portion 51 in the +Y direction, and then folded back to form the first folded portion 73. The first folded portion 73 is formed by folding back the portion where the slit 72 is provided.

[0057] The wide portion 71 of the flexible printed circuit board 7 is located on the -Y direction side of the first folded portion 73, and is fixed to the upper plate portion 514 of the wiring accommodating portion 51 via the first reinforcing plate 81. In other words, the wide portion 71 of the flexible printed circuit board 7 is a portion that functions as a fixing portion that is fixed to the fixed body 5. Furthermore, the upper plate portion 514 of the wiring accommodating portion 51 is a portion that functions as a fixing surface to which the flexible printed circuit board 7 is fixed. The first reinforcing plate 81 functions as a spacer (third spacer) for preventing contact between the flexible printed circuit board 7 and the upper plate portion 514. The flexible printed circuit board 7 is bent at a substantially right angle on the -Y direction side of the wide portion 71 (fixing portion), and is pulled out from the cutout portion 53 of the wiring accommodating portion 51 in the front (+Z) direction in the direction of the optical axis L.

[0058] The first folded portion 73 includes a first extending portion 731 and a second extending portion 732 extending in the Y direction, and a first bent portion 733 that bends from the first extending portion 731 toward the front side in the optical axis L direction (+Z direction) and then bends in the opposite direction to connect to the second extending portion 732. The first extending portion 731 and the second extending portion 732 overlap when viewed from the optical axis L direction (i.e., the direction perpendicular to the XY plane). The second reinforcing plate 82 is disposed between the first extending portion 731 and the second extending portion 732 and therefore functions as a spacer (first spacer) for preventing contact between the first extending portion 731 and the second extending portion 732. The second reinforcing plate 82 is disposed at a position closest to the first bent portion 733 (the position closest to the +Y direction) between the first extending portion 731 and the second extending portion 732.

[0059] The second folded portion 74 includes a third extending portion 741 and a fourth extending portion 74 2, and a second bent portion 743 that extends from the third extending portion 741 in a curved shape in the opposite direction and connects to the fourth extending portion 742. The third extending portion 741 and the fourth extending portion 742 overlap when viewed from the Y direction (i.e., the direction perpendicular to the optical axis L). The third reinforcing plate 83 is disposed between the third extending portion 741 and the fourth extending portion 742, and therefore functions as a spacer (second spacer) for preventing contact between the third extending portion 741 and the fourth extending portion 742. The third reinforcing plate 83 is disposed at a position closest to the second bent portion 743 (the position closest to the +Z direction) between the third extending portion 741 and the fourth extending portion 742.

[0060] 5 is a partial cross-sectional view showing the holding structure of the second folded portion 74. The flexible printed circuit board 7 has an extended portion 75 extended from the movable body 3 in the +Y direction. The second folded portion 74 has a portion that bends and extends from the extended portion 75 in the optical axis L direction and is fixed to the movable body 3. In this embodiment, the third extending portion 741 of the second folded portion 74 bends and extends from the extended portion 75 toward the front side in the optical axis L direction (+Z direction) and is fixed to the side surface 311 of the inner holder 31 in the +Y direction. The third extending portion 741 is fixed to the side surface 311 with double-sided tape 76. The double-sided tape 76 extends from the vicinity of the extended portion 75 to the vicinity of the second bent portion 743, and fixes most of the third extending portion 741 to the side surface 311.

[0061] The third extending portion 741 may be fixed by a fixing method other than the double-sided tape 76. For example, the third extending portion 741 may be fixed by an adhesive. Furthermore, it is sufficient that at least a portion of the third extending portion 741 is fixed to the side surface 311. For example, only a portion close to the drawer portion 75 may be fixed to the side surface 311, and the other portion may be allowed to move freely.

[0062] The second folded portion 74 includes a first portion 77 that can be easily deformed when the movable body 3 swings around the X axis. In this embodiment, the third extending portion 741 is fixed to the side surface 311 of the movable body 3, and therefore the fourth extending portion 742 functions as the first portion 77. The first portion 77 extends in the optical axis L direction.

[0063] The movable body 3 has a first opposing portion and a second opposing portion that oppose each other in a direction intersecting the optical axis L, and a second folded portion 74 is disposed between the first opposing portion and the second opposing portion. In this embodiment, the first opposing portion is provided on the inner holder 31 of the movable body 3, and the second opposing portion is provided on the outer holder 32 of the movable body 3. As described above, the outer holder 32 has a first frame portion 33 that opposes a side surface 311 of the inner holder 31 in the +Y direction across a gap S. The first frame portion 33 has a protrusion 35 that protrudes toward the inner holder 31 (in the -Y direction), and the tip surface of the protrusion 35 opposes the side surface 311 of the inner holder 31 in the Y-axis direction. In other words, the side surface 311 of the inner holder 31 is the first opposing portion, and the protrusion 35 of the first frame portion 33 is the second opposing portion.

[0064] The second folded portion 74 is disposed in a gap S between the side surface 311 of the inner holder 31 and the protrusion 35 of the first frame 33. By disposing the first frame 33 on the outer peripheral side of the second folded portion 74, the first frame 33 restricts deformation of the second folded portion 74 before the second folded portion 74 comes into contact with the outer frame 50 of the fixed body 5 when the movable body 3 swings. As shown in FIG. 5 , the protrusion 35 is disposed within a range overlapping with the third reinforcing plate 83 when viewed from a direction perpendicular to the optical axis L (the Y-axis direction). Therefore, the only portion of the second folded portion 74 where deformation is restricted by the protrusion 35 is the portion where the third reinforcing plate 83 is provided.

[0065] FIG. 6 is an explanatory diagram of the arrangement space of a flexible printed circuit board 7 to which the present invention is applied. FIG. 6(a) shows the shape of the flexible printed circuit board 7 when the movable body 3 swings to one side around the X axis, and FIG. 6(b) shows the shape of the flexible printed circuit board 7 when the movable body 3 rotates to the other side around the X axis. FIG. 7 is an explanatory diagram of the arrangement space of a flexible printed circuit board 7X of a comparative example. The flexible printed circuit board 7X of the comparative example has a folded portion extending in the Y axis direction. It has a shape in which multiple return portions are stacked, and does not have a folded portion extending in the optical axis L direction.

[0066] As shown in FIG. 7, the flexible printed circuit board 7X of the comparative example warps significantly when the movable body 3 swings around the X-axis, so the height H0 of the arrangement space in the direction of the optical axis L must be large. In contrast, as shown in FIG. 6, the flexible printed circuit board 7 of the present embodiment has a second folded portion 74 extending in the direction of the optical axis L that can be easily deformed when the movable body 3 swings around the X-axis, so the amount of warping of the first folded portion 73 is small. Therefore, the height H1 of the arrangement space in the direction of the optical axis L is smaller than the height H0 of the arrangement space of the comparative example. Therefore, the height of the arrangement space in the direction of the optical axis L for the flexible printed circuit board 7 can be made smaller in this embodiment than in the comparative example.

[0067] (Main effects of this embodiment) As described above, the optical unit with shake correction function of this embodiment includes the movable body 3 equipped with the optical module 2, and the movable body 3 is rotated around the first axis (X axis) intersecting the optical axis L. Swingable The optical system includes a swing support mechanism 4 that supports the movable body 3 and swings the movable body 3 about a second axis (Y-axis) intersecting the optical axis L and the first axis (X-axis), a fixed body 5 that supports the movable body 3 via the swing support mechanism 4, a swing magnetic drive mechanism 6 that swings the movable body 3 about the first axis (X-axis) and the second axis (Y-axis), and a flexible printed circuit board 7 connected to the movable body 3. The flexible printed circuit board 7 includes a wide portion 71 fixed to the fixed body 5, a first portion 77 provided between the portion connected to the movable body 3 and the wide portion 71, and a first folded portion 73 provided between the first portion 77 and the wide portion 71. The first portion 77 extends in the direction of the optical axis L, and the first folded portion 73 extends in a direction intersecting the optical axis L (the Y-axis direction) and is folded back in the opposite direction.

[0068] In this embodiment, the flexible printed circuit board 7 connected to the movable body 3 includes a first portion 77 extending in the optical axis L direction and a first folded portion 73 extending in a direction intersecting the optical axis L (Y-axis direction). The first portion 77 is easily deformable when the movable body 3 swings around the X-axis. Therefore, when the movable body 3 swings in either direction around the first axis (X-axis) or the second axis (Y-axis), at least one of the first portion 77 and the first folded portion 73 can easily bend. Therefore, when the movable body 3 swings in either direction around the X-axis or the Y-axis, an increase in the swing load of the movable body 3 due to the resistance of the flexible printed circuit board 7 can be suppressed. This can suppress an increase in power consumption.

[0069] Furthermore, in this embodiment, since the first portion 77 extending in a direction intersecting the first folded portion 73 is provided, the amount of warping of the first folded portion 73 in the direction of the optical axis L when the movable body 3 swings is small. Therefore, the arrangement space for the flexible printed circuit board 7 can be reduced.

[0070] In this embodiment, the first folded portion 73 extends radially away from the oscillation center P of the movable body 3 (+Y direction), then folds back in the opposite direction and extends radially toward the oscillation center P of the movable body 3 (-Y direction). Therefore, the side closer to the movable body 3 is more easily bent, which reduces the resistance of the flexible printed circuit board 7 when the movable body 3 oscillates. This reduces the increase in the oscillation load. Furthermore, the first folded portion 73 is bent in the direction closer to the oscillation center P of the movable body 3 in the optical axis L direction and then folded back in the opposite direction. By bending and folding back in this way in the direction closer to the oscillation center P in the optical axis L direction, the first folded portion 73 can be moved closer to the oscillation center P in the optical axis L direction. This reduces the resistance of the flexible printed circuit board 7 when the movable body 3 oscillates around an axis intersecting the optical axis L. This reduces the increase in the oscillation load.

[0071] In this embodiment, the first folded portion 73 is made up of a first extending portion 731 and a second extending portion 732 which overlap each other when viewed from the optical axis L direction. and a second extending portion 732, and a second reinforcing plate 82 functioning as a spacer (first spacer) is disposed between the first extending portion 731 and the second extending portion 732. Therefore, a gap can be secured between the first extending portion 731 and the second extending portion 732, thereby suppressing an increase in resistance and damage due to contact between the flexible substrates 70.

[0072] In this embodiment, the flexible printed circuit board 7 has a second folded portion 74 that extends in the optical axis L direction along the movable body 3 and is folded back once in the opposite direction, and the second folded portion 74 includes a first portion 77 (fourth extending portion 742) that can easily deform when the movable body 3 swings around the X axis. By thus providing the second folded portion 74 by folding back a portion extending in the optical axis L direction once, it is possible to further reduce the resistance of the flexible printed circuit board 7 when the movable body 3 swings. Therefore, it is possible to suppress an increase in the swing load.

[0073] In this embodiment, the second folded portion 74 includes a third extending portion 741 and a fourth extending portion 742 that overlap when viewed from a direction (Y-axis direction) perpendicular to the optical axis L, and a third reinforcing plate 83 that functions as a spacer (second spacer) is disposed between the third extending portion 741 and the fourth extending portion 742. Therefore, a gap can be secured between the third extending portion 741 and the fourth extending portion 742, thereby suppressing an increase in resistance and damage due to contact between the flexible substrates 70.

[0074] In this embodiment, the flexible printed circuit board 7 includes an extraction portion 75 extracted from the movable body 3 in the +Y direction, and the second folded portion 74 has a third extending portion 741 that bends and extends from the extraction portion 75 in the optical axis L direction, and at least a portion of the third extending portion 741 is fixed to the movable body 3. By fixing the third extending portion 741 to the movable body 3, the second folded portion 74 can be maintained in a position extending in the optical axis L direction. Therefore, an increase in the resistance of the flexible printed circuit board 7 when the movable body 3 swings around the X axis can be suppressed.

[0075] In this embodiment, the wide portion 71 of the flexible printed circuit board 7 is fixed to the upper plate portion 514 of the wiring accommodating portion 51 via the first reinforcing plate 81. Therefore, the first reinforcing plate 81 functions as a spacer (third spacer), and a gap can be secured between the upper plate portion 514 and the flexible printed circuit board 7, thereby suppressing an increase in resistance due to contact between the fixed body 5 and the flexible printed circuit board 7.

[0076] In this embodiment, the flexible printed circuit board 7 has a slit 72 extending in a direction intersecting the width direction, and the first folded portion 73 is formed by folding back the portion of the flexible substrate 70 where the slit 72 is provided. By providing the slit 72 in the flexible printed circuit board 7, it is possible to further reduce the resistance when the flexible printed circuit board 7 bends, and therefore it is possible to suppress an increase in the oscillation load of the movable body 3.

[0077] In this embodiment, the movable body 3 has a first opposing portion and a second opposing portion spaced apart in a direction intersecting the optical axis L (the Y-axis direction), and the second folded portion 74 is disposed between the first opposing portion and the second opposing portion. That is, the side surface 311 of the inner holder 31 is the first opposing portion, and the convex portion 35 provided on the first frame portion 33 of the outer holder 32 is the second opposing portion. Therefore, the movement range of the second folded portion 74 can be restricted, thereby suppressing excessive deformation of the flexible printed circuit board 7. Furthermore, the convex portion 35 is disposed within a range overlapping with the third reinforcing plate 83 of the second folded portion 74 as viewed from the Y-axis direction, and therefore, its movement is restricted only within the range where the third reinforcing plate 83 is provided. Therefore, the fourth extending portion 742 can move freely within a range where the third reinforcing plate 83 is not provided, thereby suppressing excessive deformation of the flexible printed circuit board 7 and reducing the resistance of the flexible printed circuit board 7 when the movable body 3 swings. Furthermore, since the area where the protrusions 35 are provided is small, the outer holder 32 can be made smaller and lighter, and the movable body 3 can be made smaller and lighter.

[0078] In the above embodiment, the wide portion 71 of the flexible printed circuit board 7 is directly fixed to the fixed body 5, but the mating member to which the flexible printed circuit board 7 is fixed may not be the fixed body 5 but a support member to which the fixed body 5 is fixed. For example, the flexible printed circuit board 7 may be fixed to a case that houses the fixed body 5.

[0079] (First Modification) 8 is an explanatory diagram of a flexible printed circuit board 7A of a first modified example. While the above-described embodiment has a second folded portion 74 extending in the direction of the optical axis L, the first modified example has a first portion 77 extending in the direction of the optical axis L along the side surface of the movable body 3. In addition, the portion bent and extending from the first portion 77 in the +Y direction is bent in the direction of the optical axis L. L The first folded portion 73 is formed by bending the wire 71 in the radial direction, folding it back in the opposite direction, and extending it in a direction approaching the swing center P in the radial direction.

[0080] The first portion 77 is bent from the lead-out portion 75 in the direction of the optical axis L and extends along the side surface 311. Only a portion of the first portion 77 near the lead-out portion 75 is fixed to the side surface 311, and the other portion is not fixed to the side surface 311. Therefore, the first portion 77 can easily deform when the movable body 3 swings around the X axis, thereby reducing the resistance of the flexible printed circuit board 7 when the movable body 3 swings.

[0081] (Second Modification) 9 is an explanatory diagram of a flexible printed circuit board 7B of a second modified example. In the above embodiment, only one folded portion of the flexible substrate 70 extending in the Y-axis direction is provided, but the second modified example includes multiple first folded portions 73 extending in the Y-axis direction. As shown in FIG. 9, in the second modified example, the flexible substrate 70 extending in the Y-axis direction is folded back twice in opposite directions, and the first folded portions 73 are stacked in two layers. In this way, by folding back the folded portion extending in the Y-axis direction two or more times, it is possible to further reduce the resistance of the flexible printed circuit board 7 when the movable body 3 swings around the Y-axis.

[0082] (Third Modification) FIG. 10 is an explanatory diagram of a flexible printed circuit board 7C of a third modified example. In the above embodiment, the flexible substrate 70 extending in the optical axis L direction has only one folded portion, but the third modified example has multiple second folded portions 74 extending in the optical axis L direction. As shown in FIG. 10, in the third modified example, the flexible substrate 70 extending in the optical axis L direction is folded back twice in opposite directions, and the second folded portions 74 are stacked in two layers. In this way, by folding back the folded portion extending in the optical axis L direction two or more times, it is possible to further reduce the resistance of the flexible printed circuit board 7 when the movable body 3 swings around the X axis.

[0083] (Fourth Modification) FIG. 11 is a perspective view of a flexible printed circuit board 7D and a movable body 3D of a fourth modified example. FIG. 12 is an exploded perspective view of the flexible printed circuit board 7D and a movable body 3D of the fourth modified example. FIG. 13 is a bottom view of the flexible printed circuit board 7D and a movable body 3D of the fourth modified example. As shown in FIG. 11, the flexible printed circuit board 7D of the fourth modified example is drawn out in the +Y direction of the movable body 3D. The end portion provided with the connector section 8 is drawn out to the rear side in the optical axis L direction (-Z direction). The flexible printed circuit board 7D has a first folded portion 73 extending in a direction intersecting the optical axis L (Y axis direction) and a second folded portion 74 extending in the optical axis L direction. The first folded portion 73 extends in the +Y direction and is then bent to the rear side in the optical axis L direction (-Z direction) and folded back in the opposite direction. The first folded portion 73 has a first extending portion 73a. Department A first reinforcing plate 82 is fixed to prevent or suppress contact between the first extending portion 731 and the second extending portion 732. The flexible printed circuit board 7D is fixed to a fixing body (not shown) via the first reinforcing plate 81.

[0084] The movable body 3D of the fourth modified example includes a camera module 2A (optical module) and an outer holder 32D (holder) surrounding the outer periphery of the camera module 2A. The camera module 2A is a modularized version of the inner holder 31 of the above embodiment, the optical module 2 held by the inner holder 31, and an optical module substrate (not shown) fixed to the end of the inner holder 31 in the -Z direction, and the inner holder 31 forms a housing for the camera module 2A. The movable body 3D differs from the above embodiment in the shape of the outer holder 32D surrounding the outer periphery of the camera module 2A. The outer holder 32D includes a first frame portion 33D extending in the X-axis direction along the +Y-direction side surface of the camera module 2A, and a recess 36 recessed in the -Y direction is formed on the +Y-direction side surface of the first frame portion 33D. A second folded portion 74 of the flexible printed circuit board 7D is disposed in the recess 36.

[0085] 12, the second folded portion 74 includes a third extending portion 741 and a fourth extending portion 742 extending in the direction of the optical axis L, and a second bent portion 743 extending in a shape that bends in the opposite direction from the third extending portion 741 and connects to the fourth extending portion 742. The third extending portion 741 bends toward the front side (+Z direction) in the direction of the optical axis L from the drawn-out portion 75 drawn out in the +Y direction from the movable body 3D, and extends in the direction of the optical axis L. The end of the fourth extending portion 742 on the rear side (-Z direction) in the direction of the optical axis L is connected to the first extending portion 731 of the first folded portion 73.

[0086] (shape-retaining parts) The flexible printed circuit board 7D has a bent portion 78 bent at a substantially right angle at the connection position between the second folded portion 74 extending in the optical axis L direction and the first folded portion 73 extending in the Y-axis direction. As shown in Fig. 12, the bent portion 78 has a first portion 77 extending in the optical axis L direction and a second portion 79 bent from the first portion 77 in the +Y direction (a direction perpendicular to the optical axis L). The first portion 77 is a fourth extending portion 742 of the second folded portion 74, and the second portion 79 is an end portion of the first extending portion 731 of the first folded portion 73 in the -Y direction. A bent plate 90, which is a shape-retaining component that retains the flexible circuit board 70 in a shape bent at a substantially right angle, is fixed to the bent portion 78.

[0087] The bent plate 90 (shape-retaining component) includes a first plate portion 91 fixed to the first portion 77 and a second plate portion 92 fixed to the second portion 79. The bent plate 90 is made of metal and is fixed to the first portion 77 and the second portion 79 with an adhesive. The material of the bent plate 90 is not limited to metal, and may be resin or another material. The bent plate 90 is disposed inside the bending portion 78, the first plate portion 91 is fixed to the +Y direction surface of the first portion 77 (i.e., the surface on the second portion 79 side), and the second plate portion 92 is fixed to the +Z direction surface of the second portion 79 (i.e., the surface on the first plate portion 91 side).

[0088] (Second folded part positioning structure) In a flexible printed circuit board 7D of the fourth modification, a third reinforcing plate 83D is fixed to a third extending portion 741, and a fourth reinforcing plate 84D is fixed to a fourth extending portion 742. The third reinforcing plate 83D and the fourth reinforcing plate 84D abut in the Y-axis direction because the flexible substrate 70 that constitutes the third extending portion 741 and the fourth extending portion 742 is folded back to form a second folded portion 74, and are disposed between the third extending portion 741 and the fourth extending portion 742 to function as a second spacer. That is, in the fourth modification, the second spacer disposed between the third extending portion 741 and the fourth extending portion 742 is not formed by a single member, but is formed by two members, the third reinforcing plate 83D and the fourth reinforcing plate 84D.

[0089] The third reinforcing plate 83D and the fourth reinforcing plate 84D have the same shape. The length in the X-axis direction of the third reinforcing plate 83D and the fourth reinforcing plate 84D is greater than the width of the third extending portion 741 and the fourth extending portion 742. Therefore, the third reinforcing plate 83D and the fourth reinforcing plate 84D each have an end 85 that protrudes in the +X direction from between the third extending portion 741 and the fourth extending portion 742, and a The end 86 protrudes in the −X direction from between the four extensions 742 .

[0090] As shown in FIG. 12 , the recess 36 of the first frame 33D includes a bottom surface 360 ​​disposed in the −Y direction of the second folded portion 74, and a pair of side surfaces 361, 362 extending in the +Y direction from both ends of the bottom surface 360 ​​in the X-axis direction. The pair of side surfaces 361, 362 face each other in the X-axis direction. Grooves 37 extending in the X-axis direction (direction of the optical axis L) are formed in the side surfaces 361, 362, respectively. As shown in FIG. 13 , the second folded portion 74 is held in the first frame 33D by inserting the +X-direction end portions 85 of the third reinforcing plate 83D and the fourth reinforcing plate 84D into the grooves 37 of the side surfaces 361 and the −X-direction end portions 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D into the grooves 37 of the side surfaces 362.

[0091] FIG. 14 is a cross-sectional view of the third reinforcing plate 83D, the fourth reinforcing plate 84D, and the groove portion 37, taken along the line BB in FIG. 13. The line BB corresponds to the +X-direction end 85 of the third reinforcing plate 83D and the fourth reinforcing plate 84D, but the cross-sectional configuration when cut along the -X-direction end 86 is the same as that shown in FIG. 14. The lead-out portion 75 of the flexible printed circuit board 7D is led out to the recess 36 through a notch 34D, which is formed by cutting out the -Z-direction end of the bottom surface 360 ​​(see FIG. 12) of the recess 36. The edge of the notch 34D is chamfered to form a curved surface. This prevents the flexible printed circuit board 7D from coming into contact with the edge of the notch 34D and being damaged.

[0092] As shown in FIG. 12, recess 36 includes step surface 381 bent in the +X direction from the −Z-direction end of side surface 361 facing the +X direction, and step surface 382 bent in the −X direction from the −Z-direction end of side surface 362 facing the −X direction. Groove 37 includes guide portions 371 extending in the +Z direction from step surfaces 381 and 382, ​​and reinforcing plate holding portion 372 extending in the +Z direction from guide portion 371. As shown in FIGS. 12 and 14, reinforcing plate holding portion 372 is a groove with a constant width in the Y-axis direction, and guide portion 371 is a tapered groove whose groove width increases toward the opposite side from reinforcing plate holding portion 372 (i.e., the −Z direction). A flat stopper surface 373 facing the −Z direction is formed at the +Z-direction end of reinforcing plate holding portion 372.

[0093] Ends 85, 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D are lightly press-fit into the reinforcing plate holding portion 372. This positions the third reinforcing plate 83D and the fourth reinforcing plate 84D in the Y-axis direction. Furthermore, the third reinforcing plate 83D and the fourth reinforcing plate 84D are positioned in the Z-axis direction by abutting the +Z-direction edges of the ends 85, 86 against the stopper surfaces 373 of the reinforcing plate holding portion 372. By positioning the third reinforcing plate 83D and the fourth reinforcing plate 84D in the optical axis L direction, the bent portion 78 connecting the second folded portion 74 and the first folded portion 73 is positioned in the optical axis L direction. Therefore, the first folded portion 73 is positioned in the optical axis L direction.

[0094] 15A and 15B are explanatory views of the step of bending and positioning the second folded portion 74. FIG. 15A shows the step of inserting the ends 85, 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D into the guide portion 371 while bending the second folded portion 74. FIGS. 5B and 5C show the step of lightly press-fitting the ends 85, 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D into the reinforcing plate holding portion 372. FIG. 5D shows the step of abutting the ends 85, 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D against the stopper surface 373 to position them in the Z-axis direction, and the step of filling the groove portion 37 with adhesive. Like Figure 14, Figure 15 shows the cross-sectional configuration when cut at the end 85 in the +X direction of the third reinforcing plate 83D and the fourth reinforcing plate 84D, but the cross-sectional configuration is the same when cut at the end 86 in the -X direction.

[0095] In the flexible printed circuit board 7D before the second folded portion 74 is folded back, the third reinforcing plate 83D is fixed to the part of the flexible substrate 70 that constitutes the third extending portion 741, and the fourth extending portion 742 is fixed to the part of the flexible printed circuit board 70 that constitutes the third extending portion 741. 15(a), the flexible substrate 70 to which the third reinforcing plate 83D and the fourth reinforcing plate 84D are fixed is bent, and while the camera module 2A is inserted into the inside of the outer holder 32D, the bent flexible substrate 70 is inserted from the -Z direction into the recess 36 formed in the first frame portion 33D of the outer holder 32D. At this time, the ends 85 and 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D protruding to both sides in the X-axis direction from between the third extending portion 741 and the fourth extending portion 742 are inserted into the groove portion 37 from the sides of the step surfaces 381 and 382 of the recess 36, respectively.

[0096] 15(a), a jig (not shown) is used to press the edge of the third reinforcing plate 83D in the -Z direction, thereby forcing the ends 85, 86 of the third reinforcing plate 83D in the +Z direction along the inner surface of the guide portion 371 in the -Y direction. When the ends 85, 86 of the third reinforcing plate 83D are inserted into the guide portion 371, the ends 85, 86 of the fourth reinforcing plate 84D, which is connected to the third reinforcing plate 83D via the flexible substrate 70, are also inserted into the guide portion 371. When the third reinforcing plate 83D is further pressed in the +Z direction, the ends 85, 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D are inserted from the guide portion 371 into the reinforcing plate holding portion 372.

[0097] 15(b), the third reinforcing plate 83D and the fourth reinforcing plate 84D are lightly press-fitted into the reinforcing plate holding portion 372 while abutting against each other in the Y-axis direction. This positions the third reinforcing plate 83D and the fourth reinforcing plate 84D in the Y-axis direction. Furthermore, by pressing the third reinforcing plate 83D and the fourth reinforcing plate 84D deeper into the reinforcing plate holding portion 372 using a jig (not shown), one of the third reinforcing plate 83D and the fourth reinforcing plate 84D hits a stopper surface 373 formed at the deeper end of the reinforcing plate holding portion 372, as shown in FIG. 15(c).

[0098] 15(d), the third reinforcing plate 83D and the fourth reinforcing plate 84D are pressed in until they both abut against the stopper surface 373, thereby positioning the third reinforcing plate 83D and the fourth reinforcing plate 84D in the direction of the optical axis L. Next, with the third reinforcing plate 83D and the fourth reinforcing plate 84D abutting against the stopper surface 373, adhesive 39 is poured from the guide portion 371 into the groove portion 37 and allowed to harden. This fixes the third reinforcing plate 83D and the fourth reinforcing plate 84D to the groove portion 37.

[0099] As described above, in the fourth modified example, the second spacer disposed between the third extending portion 741 and the fourth extending portion 742 includes a third reinforcing plate 83D fixed to the third extending portion 741 and a fourth reinforcing plate 84D fixed to the fourth extending portion 742. The movable body 3D includes an outer holder 32D that surrounds the outer periphery of the camera module 2A (optical module), and the outer holder 32D includes a groove portion 37 in which the ends 85, 86 of the third reinforcing plate 83D and the fourth reinforcing plate 84D that protrude from between the third extending portion 741 and the fourth extending portion 742 are disposed. The groove portion 37 includes a stopper surface 373 (positioning portion) that positions the third reinforcing plate 83D and the fourth reinforcing plate 84D in the optical axis L direction.

[0100] In the fourth modified example, the third reinforcing plate 83D and the fourth reinforcing plate 84D can be positioned in the optical axis L direction and the Y-axis direction intersecting the optical axis L. Furthermore, because the third reinforcing plate 83D and the fourth reinforcing plate 84D can be positioned in the optical axis L direction, variation in the bending position of the second folded-back portion 74 can be suppressed. As a result, variation in the position in the optical axis L direction of the bent portion 78 that is bent in the +Y direction from the -Z-direction end of the fourth extending portion 741 that extends in the -Z direction with the bending position as its apex can be suppressed. Therefore, variation in the position in the optical axis L direction of the second folded-back portion 74 of the flexible printed circuit board 7D that is routed in the +Y direction can be suppressed.

[0101] In the fourth modification, the groove 37 formed on the side surfaces 361, 362 of the recess 36 includes a reinforcing plate holding portion 372 into which the ends 85, 86 of the third reinforcing plate 83D and the ends 85, 86 of the fourth reinforcing plate 84D are fitted, and a guide portion 37 whose groove width increases toward the side opposite to the reinforcing plate holding portion 372. 1. Therefore, the third reinforcing plate 83D and the fourth reinforcing plate 84D can be inserted into the guide portion 371 while folding the second folded portion 74. Furthermore, by pushing the third reinforcing plate 83D and the fourth reinforcing plate 84D from the guide portion 371 into the reinforcing plate holding portion 372, the second folded portion 74 can be completely folded and positioned in the Y-axis direction. Therefore, the second folded portion 74 can be easily folded and positioned.

[0102] In the fourth modification, the ends 85, 86 of the third reinforcing plate 83D and the ends 85, 86 of the fourth reinforcing plate 84D are press-fitted into the reinforcing plate holding portion 372. This improves the positional accuracy of the third reinforcing plate 83D and the fourth reinforcing plate 84D in the Y-axis direction. Furthermore, the third reinforcing plate 83D and the fourth reinforcing plate 84D can be temporarily fixed to the groove portion 37 before being fixed with the adhesive 39.

[0103] The flexible printed circuit board 7D of the fourth modification has a bent portion 78 including a first portion 77 and a second portion 79 bent from the first portion 77 in a direction intersecting the optical axis L (the +Y direction), and a shape-retaining component that maintains the shape of the bent portion 78 is fixed to the bent portion 78. The shape-retaining component is a bent plate 90, and includes a first plate portion 91 fixed to the first portion 77 extending in the optical axis L direction and a second plate portion 92 fixed to the second portion 79 extending in the +Y direction. Fixing the bent plate 90 (shape-retaining component) to the bent portion 78 in this way prevents the bent portion 78 from opening over time, thereby suppressing changes in the initial attitude of the movable body 3D due to changes in the shape of the flexible printed circuit board 7D over time. This suppresses adverse effects on the characteristics of the optical unit with shake correction function. Furthermore, when the flexible printed circuit board 7D is bent by fixing it to the bending plate 90 (shape-retaining component), there is no need to plastically deform the flexible board 70 to maintain the bent shape, which reduces damage to the bending position and thus reduces fatigue breakage of the wiring on the flexible printed circuit board 7D due to bending.

[0104] In the fourth modified example, a bent plate 90 is used as the shape-retaining component, which allows the shape-retaining component to be made thinner and requires less space. This prevents the shape-retaining component from interfering with the fixed body (not shown) or the movable body 3D. The bent plate 90 is also disposed inside the bending portion 78 and fixed to the +Y-direction surface of the first portion 77. This means that the bent plate 90 is disposed on the opposite side of the flexible printed circuit board 7D from the movable body 3D, preventing or reducing interference between the bent plate 90 and the movable body 3D.

[0105] (Modification of shape-retaining part) The shape-retaining component is not limited to the form shown in FIG. 12. FIG. 16 is an explanatory diagram of a first modified example of the shape-retaining component, and FIG. 17 is an explanatory diagram of a second modified example of the shape-retaining component. As shown in FIG. 16, the shape-retaining component of the first modified example is a bent plate 90A including a first plate portion 91A and a second plate portion 92A bent at a substantially right angle from the first plate portion 91A. The bent plate 90A has a plurality of openings 93. The openings 93 are slit-shaped and are arranged at regular intervals in the X-axis direction. Each opening 93 penetrates the first plate portion 91A and the second plate portion 92A. Providing the openings 93 allows the bent plate 90A to be lightweight.

[0106] Each of the flexible printed circuit boards 7, 7A, 7B, 7C, and 7D of the above embodiments includes a first portion 77 extending in the optical axis L direction and a second portion 79 bent at a substantially right angle from the first portion 77, thereby including a bent portion 78. Therefore, in each of the above embodiments, a bent plate 90 and its modifications (first and second modifications) can be attached to the bent portion 78. FIG. 16 shows a state in which a bent plate 90A of the first modification is attached to the bent portion 78 of the flexible printed circuit board 7 of the embodiment shown in FIG. 3. The flexible printed circuit board 7 is drawn out in the +Y direction from the optical module substrate 20 fixed to the bottom of the inner holder (not shown). The bent plate 90A of the first modification has an opening 93, so that the bent portion 78 When fixing the substrate 90 with adhesive, the opening 93 can be used as an adhesive reservoir.

[0107] The bent plate 90A of the first modified example includes a first notch 94 formed by cutting out a corner of the first plate portion 91A in an arc shape, and a second notch 95 formed by cutting out a corner of the second plate portion 92A in an arc shape. The first notch 94 is formed at both ends of the edge of the first plate portion 91A opposite the second plate portion 92A (i.e., the edge in the +Z direction). The second notch 95 is formed at both ends of the edge of the second plate portion 92A opposite the first plate portion 91A (i.e., the edge in the +Y direction). By cutting out both ends of the bent plate 90A in the X-axis direction in this way, it is possible to suppress an increase in the spring constant of the flexible printed circuit board 7 caused by attaching the bent plate 90A.

[0108] The effect of suppressing an increase in the spring constant of the flexible printed circuit board 7 is mainly achieved by forming the second notch 95 in the second plate portion 92A, and the first notch 94 formed in the first plate portion 91A has little effect in suppressing an increase in the spring constant of the flexible printed circuit board 7. Therefore, the first notch 94 may be omitted. In the bent plate 90A of the first modification, the first notch 94 and the second notch 95 have the same shape. Therefore, the bent plate 90A has a symmetrical shape with respect to the bending position where the first plate portion 91A and the second plate portion 92A are connected. Therefore, there is no need to consider the orientation of the components when installing the bent plate 90A, which reduces the effort required for installation.

[0109] 17, the shape-retaining component of the second modified example is a bent plate 90B including a first plate portion 91B and a second plate portion 92B bent at a substantially right angle from the first plate portion 91B. The bent plate 90B includes a first notch 96 formed by cutting out the edge of the first plate portion 91B facing in the +Z direction, and a second notch 97 formed by cutting out the edge of the second plate portion 92A facing in the +Y direction. The first plate portion 91B has a protruding portion 98 formed in the center in the X-axis direction that protrudes in the +Z direction, and first notches 94 formed on both sides of the protruding portion 98. Similarly, the second plate portion 92B has a protruding portion 99 formed in the center in the X-axis direction that protrudes in the +Y direction, and second notches 95 formed on both sides of the protruding portion 99. The first cutout portion 96 and the second cutout portion 97 have the same shape, and the bent plate 90B has a symmetrical shape with respect to the bending position where the first plate portion 91B and the second plate portion 92B are connected.

[0110] In the bent plate 90B of the second modification, the area cut out by the first notch portion 96 and the second notch portion 97 is larger than the area cut out in the bent plate 90A of the first modification, and therefore, the bent plate 90B is more effective in suppressing an increase in the spring constant of the flexible printed circuit board 7 than the bent plate 90A of the first modification. Here, the center of the first plate portion 91B in the X-axis direction and the center of the second plate portion 92B in the X-axis direction are not cut out and protrusions 98, 99 are formed, but even if the centers of the first plate portion 91B and the second plate portion 92B in the X-axis direction are cut out, the effect of suppressing an increase in the spring constant of the flexible printed circuit board 7 is small. The bent plate 90B of the second modification can effectively suppress an increase in the spring constant of the flexible printed circuit board 7 by cutting out both end portions in the X-axis direction of the first plate portion 91B and the second plate portion 92B. [Explanation of symbols]

[0111] 1...optical unit with shake correction function, 2...optical module, 2A...camera module, 3, 3D...movable body, 4...swing support mechanism, 5...fixed body, 6...magnetic drive mechanism for swing, 6X...first magnetic drive mechanism, 6Y...second magnetic drive mechanism, 7, 7A, 7B, 7C, 7D, 7X...flexible printed circuit board, 8...connector portion, 20...optical module board, 30...holder, 31...inner holder, 32, 32D...outer holder, 33, 33D...first frame portion, 34, 34D...cutout portion, 35...protrusion portion, 36...recess portion, 37...groove portion, 39...adhesive, 41...first swing support portion, 42...second swing support portion, 50...outer frame portion, 51...wiring accommodating portion, 52...opening portion, 53...cutout portion, 70...flexible substrate, 71...wide portion, 72...slit, 73...first folded portion, 74...second folded portion, 75...drawing portion, 76...double-sided tape, 77...first portion, 78 ...bent portion, 79...second portion, 80...reinforcing plate, 81...first reinforcing plate, 82...second reinforcing plate, 83, 83D...third reinforcing plate, 84D...fourth reinforcing plate, 85...end in +X direction, 86...end in -X direction, 90, 90A, 90B...bent plate, 91, 91A, 91B...first plate portion, 92, 92A, 92B...second plate portion, 93...opening, 94, 96...first notch portion, 95, 97...second notch portion, 98, 99...protruding portion, 311...side surface, 360...bottom surface, 361...side surface in +X direction , 362...side surface in -X direction, 371...guiding portion, 372...reinforcing plate holding portion, 373...stopper surface (positioning portion), 381, 382...step surface, 501, 502, 503, 504...side wall portion, 511, 512, 513...frame portion, 514...upper plate portion, 731...first extension portion, 732...second extension portion, 733...first bent portion, 741...third extension portion, 742...fourth extension portion, 743...second bent portion, L...optical axis, P...swing center, R1...first axis line, R2...second axis line, S...gap

Claims

1. a movable body having an optical module; a swing support mechanism that supports the movable body swingably about a first axis that intersects with an optical axis and that supports the movable body swingably about a second axis that intersects with the optical axis and the first axis; a fixed body that supports the movable body via the swing support mechanism; a magnetic driving mechanism for swinging the movable body around the first axis and the second axis; a flexible printed circuit board connected to the movable body, The flexible printed circuit board is a fixed portion fixed directly or indirectly to the fixed body; a first portion provided between a portion connected to the movable body and the fixed portion and extending in the optical axis direction along the movable body; a first folded portion provided between the first portion and the fixed portion, extending in a direction intersecting the optical axis and folded back in the opposite direction; a second folded portion extending in the optical axis direction and folded back once in the opposite direction, the second folded portion includes the first portion; the second folded portion includes a third extending portion and a fourth extending portion that overlap when viewed in a direction perpendicular to the optical axis, a second spacer is disposed between the third extension portion and the fourth extension portion; the movable body includes a first opposing portion and a second opposing portion spaced apart in a direction intersecting the optical axis, the first portion is disposed between the first opposing portion and the second opposing portion, the second opposing portion is disposed on the outer circumferential side of the first opposing portion, The optical unit with shake correction function is characterized in that the second opposing portion is disposed within a range overlapping with the second spacer when viewed from a direction perpendicular to the optical axis.

2. a movable body having an optical module; a swing support mechanism that supports the movable body about a first axis that intersects with an optical axis and supports the movable body swingably about a second axis that intersects with the optical axis and the first axis; a fixed body that supports the movable body via the swing support mechanism; a magnetic driving mechanism for swinging the movable body around the first axis and the second axis; a flexible printed circuit board connected to the movable body, The flexible printed circuit board is a fixed portion fixed directly or indirectly to the fixed body; a first portion provided between a portion connected to the movable body and the fixed portion and extending in the optical axis direction along the movable body; a first folded portion provided between the first portion and the fixed portion, extending in a direction intersecting the optical axis and folded back in the opposite direction; a second folded portion extending in the optical axis direction and folded back once in the opposite direction, the second folded portion includes the first portion; the second folded portion includes a third extending portion and a fourth extending portion that overlap when viewed in a direction perpendicular to the optical axis, a second spacer is disposed between the third extension portion and the fourth extension portion; the second spacer includes a third reinforcing plate fixed to the third extension portion and a fourth reinforcing plate fixed to the fourth extension portion, the movable body includes a holder that surrounds the outer periphery of the optical module, the holder includes a groove portion in which an end portion of the third reinforcing plate protruding from between the third extension portion and the fourth extension portion and an end portion of the fourth reinforcing plate are disposed, The optical unit with shake correction function is characterized in that the groove portion includes a positioning portion that positions the third reinforcing plate and the fourth reinforcing plate in the optical axis direction.

3. The optical unit with shake correction function described in claim 2, characterized in that the groove portion comprises a reinforcing plate holding portion into which the end of the third reinforcing plate and the end of the fourth reinforcing plate fit, and a guide portion whose groove width widens as it approaches the opposite side from the reinforcing plate holding portion.

4. 4. The optical unit with shake correction function according to claim 3, wherein an end portion of the third reinforcing plate and an end portion of the fourth reinforcing plate are press-fitted into the reinforcing plate holding portion.

5. The first folded portion An optical unit with shake correction function as described in any one of claims 1 to 4, characterized in that it extends in a direction away from the swing center of the movable body in a radial direction, then turns back in the opposite direction and extends in a direction approaching the swing center in a radial direction.

6. 6. The optical unit with shake correction function according to claim 1, wherein the first folded portion is bent in a direction approaching a swing center in the optical axis direction and then folded back in the opposite direction.

7. the first folded portion includes a first extending portion and a second extending portion that overlap when viewed from the optical axis direction, 7. The optical unit with shake correction function according to claim 1, wherein a first spacer is disposed between the first extension portion and the second extension portion.

8. The flexible printed circuit board is 8. The optical unit with shake correction function according to claim 1, wherein the first folded portion is provided in plural.

9. The flexible printed circuit board is 9. The optical unit with shake correction function according to claim 1, wherein the second folded portion is provided in plural.

10. the flexible printed circuit board includes an extraction portion extracted from the movable body in a direction intersecting the optical axis, The optical unit with shake correction function described in any one of claims 1 to 9, characterized in that at least a part of the second folded portion that bends and extends from the pull-out portion in the optical axis direction is fixed to the movable body.

11. 11. The optical unit with shake correction function according to claim 1, wherein the fixed portion is fixed to the fixed body via a third spacer.

12. 12. The optical unit with shake correction function according to claim 1, wherein the flexible printed circuit board has a slit extending in a direction intersecting with the width direction.

13. the flexible printed circuit board has a bent portion including the first portion and a second portion bent from the first portion in a direction intersecting the optical axis, 13. The optical unit with shake correction function according to claim 1, wherein a shape-retaining component that retains the shape of the bent portion is fixed to the bent portion.

14. The shape-retaining part is The optical unit with shake correction function described in claim 13 is characterized in that it is a curved plate having a first plate portion fixed to the first part and a second plate portion extending in a direction intersecting the first plate portion and fixed to the second part.

15. The optical unit with shake correction function described in claim 14, characterized in that the bent plate has a first notch portion formed at both ends of the edge of the first plate portion opposite the second plate portion, and a second notch portion formed at both ends of the edge of the second plate portion opposite the first plate portion.

16. 16. The optical unit with shake correction function according to claim 14, wherein the bending plate has an opening.

17. 17. The optical unit with shake correction function according to claim 14, wherein the bent plate is disposed inside the bent portion.

18. A movable body having an optical module; a swing support mechanism that supports the movable body about a first axis that intersects with an optical axis and supports the movable body swingably about a second axis that intersects with the optical axis and the first axis; a fixed body that supports the movable body via the swing support mechanism; a magnetic driving mechanism for swinging the movable body around the first axis and the second axis; a flexible printed circuit board connected to the movable body, The flexible printed circuit board is a fixed portion fixed directly or indirectly to the fixed body; a first portion provided between a portion connected to the movable body and the fixed portion and extending in the optical axis direction along the movable body; a first folded portion provided between the first portion and the fixed portion, extending in a direction intersecting the optical axis and folded back in the opposite direction; a second folded portion extending in the optical axis direction and folded back once in the opposite direction, the second folded portion includes the first portion; The second folded portion includes a third extending portion and a second extending portion which overlap each other when viewed from a direction perpendicular to the optical axis.

4. The extension portion a manufacturing method of an optical unit with a shake correction function, in which a second spacer is disposed between the third extension portion and the fourth extension portion, a third reinforcing plate is fixed to a portion of the flexible printed circuit board that constitutes the third extending portion before the second folded portion is folded back, and a fourth reinforcing plate is fixed to a portion of the flexible printed circuit board that constitutes the fourth extending portion; abutting the third reinforcing plate and the fourth reinforcing plate in a direction intersecting the optical axis to align the positions of the third reinforcing plate and the fourth reinforcing plate in the optical axis direction, thereby folding the second folded portion at a preset bending position.

19. the movable body includes a holder that surrounds the outer periphery of the optical module, The method for manufacturing an optical unit with shake correction function described in claim 18, characterized in that the ends of the third reinforcing plate and the fourth reinforcing plate are inserted into grooves formed in the holder, and the ends of the third reinforcing plate and the fourth reinforcing plate are abutted against positioning portions provided in the grooves, thereby aligning the positions of the third reinforcing plate and the fourth reinforcing plate in the optical axis direction.

20. 20. The method for manufacturing an optical unit with shake correction function described in claim 19, characterized in that an end of the third reinforcing plate and an end of the fourth reinforcing plate are inserted into the groove portion to align the position in the optical axis direction, and then an adhesive is poured into the groove portion.

Images