JP7603473B2 - Optical Unit - Google Patents

Description

The present invention relates to an optical unit.

Conventionally, various optical units have been used that include a movable body having an optical module, a fixed body that rotatably supports the movable body, and a drive mechanism that rotates and moves the movable body relative to the fixed body. For example, Patent Document 1 discloses an optical unit that includes a movable body having an optical module, a fixed body that rotatably supports the movable body, and a correction drive mechanism that rotates and moves the movable body relative to the fixed body.

Publication No. 2020-160373

In conventional optical units capable of rotating a movable body equipped with an optical module relative to a fixed body as described above, a drive mechanism having a magnet and a coil connected to a flexible printed circuit board is generally used. However, in optical units having such a configuration, for example, when positioning the coil relative to the fixed body, the coil may deviate from the desired position. This is because the flexible printed circuit board to which the coil is fixed is attached to the fixed body with adhesive or the like, and the coil is temporarily fixed to the fixed body before being fixed. Therefore, the temporary fixing position of the flexible printed circuit board relative to the fixed body is shifted due to manufacturing tolerances of the flexible printed circuit board and deviations in the attachment position, and the fixing position of the coil relative to the fixed body is also shifted. In addition, UV adhesive is often used as an adhesive for temporary fixing, but the use of UV adhesive requires a UV irradiation device, etc., which increases costs and may complicate the manufacturing process of the optical unit. Therefore, the present invention aims to accurately and easily position the coil of the drive mechanism that rotates the movable body relative to the fixed body.

The optical unit of the present invention comprises a movable body having an optical module, a fixed body that rotatably supports the movable body with a rotation axis in a direction intersecting with the optical axis direction of the optical module, and a drive mechanism that rotates the movable body relative to the fixed body, and the drive mechanism has a magnet provided on the movable body, a coil provided on the fixed body, a flexible printed circuit board connected to the coil, and a reinforcing plate to which the coil and the flexible printed circuit board are fixed, the reinforcing plate being provided with a convex portion, and the fixed body being provided with a contact portion with which the convex portion comes into contact.

According to this aspect, the coil and the flexible printed circuit board are fixed to the reinforcing plate, and the reinforcing plate is fixed to the fixed body by contacting the protrusions of the reinforcing plate with the contact parts of the fixed body. Therefore, the reinforcing plate is accurately and easily positioned relative to the fixed body by the protrusions of the reinforcing plate and the contact parts of the fixed body, and therefore the coil is also accurately and easily positioned relative to the fixed body.

In addition, in the optical unit of the present invention, the fixed body can be configured to have an abutted portion that abuts against an abutting portion provided in an area of the reinforcing plate opposite the convex portion when the convex portion contacts the contact portion. With this configuration, the coil can be positioned particularly accurately with respect to the fixed body by the abutting portion of the reinforcing plate and the abutted portion of the fixed body, in addition to the contact portion of the reinforcing plate and the fixed body. Also, by abutting the abutting portion of the reinforcing plate and the abutted portion of the fixed body at a position opposite to the position where the convex portion of the reinforcing plate and the contact portion of the fixed body contact each other, it is possible to prevent the convex portion of the reinforcing plate from coming off the contact portion of the fixed body.

In addition, in the optical unit of the present invention, the contact direction of the convex portion with respect to the contact portion can be configured to be the optical axis direction. In an optical unit configured to rotatably support a movable body relative to a fixed body with a direction intersecting the optical axis direction as the axis of rotation, accuracy of the position of the coil relative to the magnet, particularly in the optical axis direction, is required, and by using such a configuration, the position of the coil, particularly relative to the magnet, can be accurately determined in the optical axis direction.

In addition, in the optical unit of the present invention, the convex portion and the contact portion can be configured so that the convex portion is pressed into contact with the contact portion. With this configuration, the convex portion of the reinforcing plate and the contact portion of the fixed body can be positioned and fixed accurately and easily without causing any rattling.

In addition, in the optical unit of the present invention, at least one of the reinforcing plate and the flexible printed circuit board can be configured to be adhered to the fixed body with an adhesive. With such a configuration, the fixed body and the reinforcing plate can be firmly fixed, and the positional deviation of the reinforcing plate relative to the fixed body can be particularly effectively suppressed, and the positional deviation of the coil relative to the fixed body can be particularly effectively suppressed.

In addition, in the optical unit of the present invention, the reinforcing plate can be configured to have a plurality of the protrusions. With such a configuration, the reinforcing plate can be positioned relative to the fixed body at a plurality of locations, the reinforcing plate can be positioned particularly accurately relative to the fixed body, and the coil can be positioned particularly accurately relative to the fixed body.

In addition, the manufacturing method of the optical unit of the present invention includes a movable body having an optical module, a fixed body that rotatably supports the movable body with a rotation axis in a direction intersecting with the optical axis direction of the optical module, and a drive mechanism that rotates the movable body relative to the fixed body, and the drive mechanism is a manufacturing method of an optical unit having a magnet provided on the movable body, a coil provided on the fixed body, a flexible printed circuit board connected to the coil, and a reinforcing plate to which the coil and the flexible printed circuit board are fixed, characterized in that it includes a step of providing a convex portion on the reinforcing plate, a step of fixing the coil and the flexible printed circuit board to the reinforcing plate, a step of forming the fixed body having a contact portion that can be brought into contact with the convex portion and an abutted portion that can be abutted with an abutting portion provided in an area of the reinforcing plate opposite the convex portion, and a step of bringing the abutting portion into contact with the abutting portion while bringing the convex portion into contact with the contacting portion.

According to this aspect, the reinforcing plate is accurately positioned relative to the fixed body by the convex portion of the reinforcing plate and the contact portion of the fixed body. Furthermore, the reinforcing plate is particularly accurately positioned relative to the fixed body by the abutting portion of the reinforcing plate and the abutted portion of the fixed body in addition to the convex portion of the reinforcing plate and the contact portion of the fixed body, and the coil can be particularly accurately positioned relative to the fixed body. Furthermore, by pressing the convex portion of the reinforcing plate into the contact portion of the fixed body, the convex portion of the reinforcing plate and the contact portion of the fixed body can be accurately positioned and fixed easily and without causing any rattling. Furthermore, since there is no need to temporarily fix with UV adhesive or the like, the coil can be easily positioned relative to the fixed body.

The optical unit of the present invention can accurately and easily position the coil of the drive mechanism that rotates the movable body relative to the fixed body.

1 is a perspective view of a smartphone equipped with an optical unit according to an embodiment of the present invention. FIG. 2 is a plan view of an optical unit according to an embodiment of the present invention. FIG. 1 is a perspective view of an optical unit according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of an optical unit according to an embodiment of the present invention. 5 is an exploded perspective view of an optical unit according to an embodiment of the present invention, seen from an angle different from that of FIG. 4. FIG. 2 is a front view of an optical unit according to an embodiment of the present invention. FIG. 2 is a side view of an optical unit according to an embodiment of the present invention.

Below, an embodiment of the present invention will be described with reference to the drawings. In each figure, the X-axis, Y-axis, and Z-axis are perpendicular to each other, and the views seen in the +X and -X directions are side views, the views seen in the +Y direction are plan views, the views seen in the -Y direction are bottom views, the views seen in the +Z direction are rear views, and the views seen in the -Z direction are front views. The +Y direction corresponds to the incident direction D1 of the light beam from outside.

<Outline of device equipped with optical unit>
First, an optical unit 1 according to a first embodiment of the present invention will be described. Fig. 1 is a schematic perspective view of a smartphone 100 as an example of a device including the optical unit 1 according to the present embodiment. The optical unit 1 according to the present embodiment can be preferably used in the smartphone 100. This is because the optical unit 1 according to the present embodiment can be configured to be thin, and the thickness of the smartphone 100 in the Y-axis direction can be configured to be thin. However, the optical unit 1 according to the present embodiment is not limited to the smartphone 100, and can be used in various devices such as cameras and videos without any particular limitation.

As shown in FIG. 1, the smartphone 100 has a cover glass 101 through which a light beam is incident. The smartphone 100 has an optical unit 1 inside the cover glass 101. The smartphone 100 is configured such that a light beam is incident from the outside in an incident direction D1 through the cover glass 101, and a subject image can be captured based on the incident light beam.

<Overall configuration of optical unit>
2 to 5, the configuration of the optical unit 1 according to the present embodiment will be described in brief. The optical unit 1 includes a movable body 14 including an optical module 12 such as a lens 12a and an image sensor 50, and a fixed body 16 that holds the movable body 14 in a displaceable state in a direction (pitching direction) around the X-axis direction as a rotation axis (swing axis) and a direction (yawing direction) around the Z-axis direction as a rotation axis (swing axis). The optical unit 1 also includes a drive mechanism 18 (drive mechanism 18A and drive mechanism 18B) that drives the movable body 14 in the pitching direction and the yawing direction, and a support mechanism 20 that supports the movable body 14 rotatably (swingably) in the pitching direction and the yawing direction relative to the fixed body 16.

<About moving parts>
4 and 5, the optical unit 1 of this embodiment has a movable body main body 14A and a holder 14B as the movable body 14. The movable body main body 14A has an optical module 12. The holder 14B holds the movable body main body 14A and is provided with magnets 24 (magnets 24A and 24B) that constitute the drive mechanism 18. In addition, in FIGS. 4 and 5, the optical unit 1 is shown in a state in which the image sensor 50 and the flexible printed circuit board 51 connected to the image sensor 50 are fixed to the holder 14B. However, the image sensor 50 is attached to the movable body main body 14A, and the image sensor 50 and the flexible printed circuit board 51 connected to the image sensor 50 can also be considered to constitute a part of the movable body main body 14A.

Thus, the movable body 14 includes a movable body main body 14A on which the optical module 12 and the like are provided, and a holder 14B on which the magnet 24 and the like are provided. The holder 14B is configured as a rectangular frame-shaped member that is provided to surround the remaining four sides, excluding the front side (the side facing the subject) on which the lens 12a of the optical module 12 is provided, and the rear side on the opposite side. The holder 14B in this embodiment is configured, as an example, to allow the optical module 12 to be detachably attached. However, the optical module 12 and the holder 14B may be configured integrally. The magnets 24A and 24B for correcting pitching and yawing are attached to the outer surfaces of the two sides of the holder 14B that face the fixed body 16.

The optical unit 1 of this embodiment also includes a fixed body 16, as shown in Figs. 2 to 5. In Figs. 2 to 5, the fixed body 16 includes a coil 32A at a position facing the magnet 24A, and a coil 32B at a position facing the magnet 24B. In Figs. 4 and 5, the coils 32A and 32B are shown at positions away from the fixed body 16, but the coil 32A is arranged at the coil arrangement position 16f (see Fig. 5) of the fixed body 16, and the coil 32B is arranged at the coil arrangement position 16g (see Fig. 5) of the fixed body 16. However, the details of the positioning of the coils 32 (coils 32A and 32B) relative to the fixed body 16 will be described later. In this embodiment, the coils 32A and 32B are both configured as wound coils as an example, but the coils 32 may be incorporated as a patterned board (coil board) into the board wiring as a pattern.

<Optical module>
The optical module 12 of this embodiment can be used in, for example, a thin camera mounted on a camera-equipped mobile phone other than a smartphone, a tablet PC, etc., in addition to the smartphone 100. The optical module 12 has a lens 12a on the subject side and has built-in optical equipment for capturing an image.

Here, the optical unit 1 of this embodiment, as an example, incorporates a drive mechanism 18 that corrects pitching shake (shake in the rotation direction around the X-axis direction as the axis of rotation) and yawing shake (shake in the rotation direction around the Z-axis direction as the axis of rotation) that occurs in the optical module 12, and is configured to be able to correct pitching shake and yawing shake. Note that in this embodiment, the optical module 12 is configured to be able to correct pitching shake and yawing shake, but it may also be configured to be able to correct rolling shake (shake in the rotation direction around the Y-axis direction as the axis of rotation). Note that the image sensor 50 can also be considered to constitute a part of the optical module 12.

<About the drive mechanism>
In this embodiment, when the movable body 14 is disposed within the fixed body 16, the magnet 24A and the coil 32A, and the magnet 24B and the coil 32B, face each other as shown in Figures 4 and 5. In this embodiment, the pair of the magnet 24A and the coil 32A, and the pair of the magnet 24B and the coil 32B each constitute a driving mechanism 18. The pitching and yawing of the movable body 14 are corrected by the driving mechanism 18.

Pitching and yawing are corrected as follows. When the optical unit 1 shakes in both or either one of the pitching and yawing directions, the shake is detected by a magnetic sensor (Hall elements 33A and 33B: see Figures 4 and 5), and the drive mechanism 18 is driven based on the result. Alternatively, the shake of the optical unit 1 may be detected using a shake detection sensor (gyroscope) or the like. Based on the shake detection result, the drive mechanism 18 acts to correct the shake. That is, a current is passed through each coil 32 so as to move the movable body 14 in a direction that cancels the shake of the optical unit 1, thereby correcting the shake. The Hall elements 33 (Hall elements 33A and 33B) can also be considered as components of the drive mechanism 18.

In this way, the optical unit 1 of this embodiment is provided with a drive mechanism 18 that rotates the movable body 14 relative to the fixed body 16 around the pitch axis direction and the yaw axis direction as the rotation axis. Here, the drive mechanism 18 is preferably disposed in a position other than the side (+Z direction side) where the flexible printed circuit board 51 is disposed in the X-axis direction relative to the movable body 14. This is because the drive mechanism 18 can be disposed on the side where the flexible printed circuit board 51 is not formed, so there is no need to make the optical unit 1 larger to prevent contact between the drive mechanism 18 and the flexible printed circuit board 51, and the optical unit 1 can be made smaller. Note that "rotation" in this specification does not necessarily mean rotating 360°, but includes the case where it oscillates in the rotational direction.

Here, as will be described in detail later, both coils 32A and 32B are connected and fixed to the flexible printed circuit board 52. A reinforcing plate 60 is attached to the flexible printed circuit board 52. In the optical unit 1 of this embodiment, the reinforcing plate 60 is fixed to the fixed body 16, whereby the flexible printed circuit board 52 and the coils 32A and 32B fixed thereto are fixed to the fixed body 16.

<Support mechanism>
The support mechanism 20 of this embodiment is a gimbal mechanism having spring properties formed by bending a metal flat plate material. Specifically, as shown in Figs. 4 and 5, the support mechanism 20 is configured by including a gimbal frame portion 23 provided on the subject side as an example, a first leg portion 21 formed by bending the four corner portions of the gimbal frame portion 23 by 90° in the optical axis direction, and a second leg portion 22. Note that the first leg portion 21 and the second leg portion 22 do not necessarily have to be entirely plate-shaped, and only a part of them may be formed into a plate shape to exhibit spring properties. Also, one of the first leg portion 21 and the second leg portion 22 may be formed into a shape other than a plate shape (for example, a rod shape, etc.). In addition, the support mechanism 20 in this embodiment is configured to rotatably support the movable body 14 relative to the fixed body 16 with two directions, the pitching direction and the yawing direction, as the directions of the rotation axis, but it may also be configured to rotatably support the movable body 14 relative to the fixed body 16 with only one of the pitching direction or the yawing direction as the direction of the rotation axis.

In the support mechanism 20 of this embodiment, the first leg 21 is provided with a concave curved surface 21a that is recessed inward, and the second leg 22 is provided with a concave curved surface 22a that is recessed inward. The first leg 21 is configured so that a force is applied so that the concave curved surface 21a spreads outward, and the second leg 22 is configured so that a force is applied so that the concave curved surface 22a spreads outward.

As shown in Figs. 4 and 5, a fixed body support part 41 is provided at a position facing the concave curved surface 21a of the fixed body 16, and is provided with a spherical convex curved surface 41a that protrudes inward and fits into the concave curved surface 21a. As shown in Figs. 4 and 5, a movable body support part 42 is provided at a position facing the concave curved surface 22a of the holder 14B, and is provided with a spherical convex curved surface 42a that protrudes inward and fits into the concave curved surface 22a. The fixed body support part 41 is attached to the attachment position 16e of the fixed body 16, and the movable body support part 42 is attached to the attachment position 14a of the holder 14B.

Here, the optical unit 1 of this embodiment rotatably supports the support mechanism 20 with respect to the fixed body 16 around the first axis L1 (see FIG. 2) as the rotation axis by arranging the convex curved surface 41a within the concave curved surface 21a and pressing the concave curved surface 21a against the convex curved surface 41a. Also, the optical unit 1 of this embodiment rotatably supports the movable body 14 with respect to the support mechanism 20 around the second axis L2 (see FIG. 2) as the rotation axis by arranging the convex curved surface 42a within the concave curved surface 22a and pressing the concave curved surface 22a against the convex curved surface 42a. That is, the support mechanism 20 of this embodiment rotatably supports the support mechanism 20 with respect to the fixed body 16 around the first axis L1 as the rotation axis, and rotatably supports the movable body 14 with respect to the support mechanism 20 around the second axis L2 as the rotation axis, thereby rotatably supporting the movable body 14 with respect to the fixed body 16 around all directions intersecting with the optical axis direction (Y-axis direction) as the rotation axis. In this embodiment, the optical unit 1 is configured to rotate the movable body 14 relative to the fixed body 16 with the pitching and yawing directions as rotation axes by driving the drive mechanism 18.

<Coil positioning structure>
Details of the positioning structure of the coil 32 will be described below with reference to Figs. 2 to 5, as well as Figs. 6 and 7. As described above, in the optical unit 1 of this embodiment, both the coil 32A and the coil 32B are connected and fixed to the flexible printed circuit board 52, and the reinforcing plate 60 is attached to the flexible printed circuit board 52. That is, the flexible printed circuit board 52 and the reinforcing plate 60 can also be considered as components of the drive mechanism 18. Here, the reinforcing plate 60 is made of polyimide with high rigidity. Therefore, by accurately positioning and fixing the reinforcing plate 60 to the fixed body 16, the flexible printed circuit board 52 and the coil 32 can be accurately positioned and fixed. However, there is no particular limitation on the material of the reinforcing plate 60.

To summarize, as described above, the optical unit 1 of this embodiment includes a movable body 14 having an optical module 12, a fixed body 16 that rotatably supports the movable body 14 via a support mechanism 20 with a direction intersecting the optical axis direction (incident direction D1) of the optical module 12 as the rotation axis, and a drive mechanism 18 that rotates the movable body 14 relative to the fixed body 16. The drive mechanism 18 includes a magnet 24 provided on the movable body 14, a coil 32 provided on the fixed body 16, a flexible printed circuit board 52 connected to the coil 32, and a reinforcing plate 60 to which the coil 32 and the flexible printed circuit board 52 are fixed.

Here, as shown in FIG. 6 and FIG. 7, the reinforcing plate 60 is provided with a convex portion 61, and the fixed body 16 is provided with a contact portion 161 with which the convex portion 61 comes into contact. In detail, the optical unit 1 of this embodiment has two reinforcing plates as the reinforcing plate 60, a reinforcing plate 60A provided at a position facing the coil 32A, and a reinforcing plate 60B provided at a position facing the coil 32B, and two convex portions 61 protruding in the +Y direction are formed on both the reinforcing plate 60A and the reinforcing plate 60B. As shown in FIG. 6, the two convex portions 61 of the reinforcing plate 60A come into contact with the contact portion 161b, and as shown in FIG. 7, the two convex portions 61 of the reinforcing plate 60B come into contact with the contact portion 161d.

In this way, in the optical unit 1 of this embodiment, the coil 32 and the flexible printed circuit board 52 are fixed to the reinforcing plate 60, and the reinforcing plate 60 is fixed to the fixed body 16 by contacting the convex portion 61 of the reinforcing plate 60 with the contact portion 161 of the fixed body 16. Therefore, in the optical unit 1 of this embodiment, the reinforcing plate 60 is accurately and easily positioned with respect to the fixed body 16 by the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16, and as a result, the coil 32 is also accurately and easily positioned with respect to the fixed body 16.

In addition, in the optical unit 1 of this embodiment, as shown in FIG. 6, the fixed body 16 is provided with an abutted portion 162 (abutted portion 162a) against which the abutting portion 62 provided in the area opposite the convex portion 61 of the reinforcing plate 60 abuts when the convex portion 61 contacts the contact portion 161b. In addition, as shown in FIG. 7, the fixed body 16 is provided with an abutted portion 162 (abutted portion 162c) against which the abutting portion 62 provided in the area opposite the convex portion 61 of the reinforcing plate 60 abuts when the convex portion 61 contacts the contact portion 161d.

The optical unit 1 of this embodiment is configured in this way, and the coil 32 can be positioned particularly accurately with respect to the fixed body 16 by the abutting portion 62 of the reinforcing plate 60 and the abutted portion 162 of the fixed body 16 in addition to the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16. Also, the abutting portion 62 of the reinforcing plate 60 abuts against the abutted portion 162 of the fixed body 16 at a position (position on the -Y direction side of the reinforcing plate 60) opposite the position where the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16 contact (position on the +Y direction side of the reinforcing plate 60), thereby preventing the reinforcing plate 60 from shifting in the -Y direction with respect to the fixed body 16 and preventing the convex portion 61 of the reinforcing plate 60 from coming off the contact portion 161 of the fixed body 16.

In the optical unit 1 of this embodiment, both the contact portion 161 and the abutted portion 162 of the fixed body 16 have a rib-like shape that protrudes outward. The reinforcing plate 60, to which the coil 32 and the flexible printed circuit board 52 are fixed, is inserted from the outside between the contact portion 161 and the abutted portion 162 of the fixed body 16, thereby positioning the reinforcing plate 60 relative to the fixed body 16. However, the present invention is not limited to this configuration.

In addition, in the optical unit 1 of this embodiment, the contact direction of the convex portion 61 with the contact portion 161 is the optical axis direction (Y-axis direction). In an optical unit configured to support the movable body 14 rotatably relative to the fixed body 16 with a direction intersecting the optical axis direction as the axis of rotation, as in the optical unit 1 of this embodiment, the accuracy of the position of the coil 32 relative to the magnet 24 in the optical axis direction is particularly required. Therefore, the optical unit 1 of this embodiment is configured in this way, and the position of the coil 32 in the optical axis direction, particularly relative to the magnet 24, is accurately positioned. However, this is not limited to this configuration, and the contact direction of the convex portion 61 with the contact portion 161 may be a direction intersecting the optical axis direction.

Here, in the optical unit 1 of this embodiment, the convex portion 61 and the contact portion 161 are configured such that when the reinforcing plate 60 is inserted from the outside into the area between the contact portion 161 and the abutted portion 162 of the fixed body 16, the convex portion 61 is pressed in and comes into contact with the contact portion 161. With this configuration, the optical unit 1 of this embodiment accurately positions and fixes the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16 easily and without causing any rattling.

At least one of the reinforcing plate 60 and the flexible printed circuit board 52 may be adhered to the fixed body 16 with an adhesive, for example, as a permanent fixation rather than a temporary fixation. By adhering at least one of the reinforcing plate 60 and the flexible printed circuit board 52 to the fixed body 16 with an adhesive, the fixed body 16 and the reinforcing plate 60 can be firmly fixed, and misalignment of the reinforcing plate 60 relative to the fixed body 16 can be particularly effectively suppressed. Therefore, misalignment of the coil 32 relative to the fixed body 16 can be particularly effectively suppressed. There is no particular limitation on the adhesive used here.

As shown in Figures 6 and 7, in the optical unit 1 of this embodiment, the reinforcing plate 60A and the reinforcing plate 60B are each provided with two convex portions 61. In this manner, it is preferable to configure the reinforcing plate 60 to have a plurality of convex portions 61. With such a configuration, the reinforcing plate 60 can be positioned relative to the fixed body 16 at a plurality of locations, the reinforcing plate 60 can be positioned particularly accurately relative to the fixed body 16, and the coil 32 can be positioned particularly accurately relative to the fixed body 16.

The manufacturing method of the optical unit 1 of this embodiment is described below. In the manufacturing method of the optical unit 1 of this embodiment, a process of providing a convex portion 61 on the reinforcing plate 60 is performed. This process corresponds to a process of manufacturing the reinforcing plate 60 on which the convex portion 61 is formed. Next, a process of fixing the coil 32 and the flexible printed circuit board 52 to the reinforcing plate 60 is performed. Next, a process of forming a fixed body 16 having a contact portion 161 that can be contacted with the convex portion 61 and an abutted portion 162 that can be abutted with an abutting portion 62 provided in an area of the reinforcing plate 60 opposite the convex portion 61 is performed. Then, a process of contacting the convex portion 61 of the reinforcing plate 60 with the contact portion 161 while abutting the abutting portion 62 with the abutting portion 162 is performed.

By carrying out the manufacturing method of the optical unit 1 of this embodiment, the reinforcing plate 60 is accurately positioned relative to the fixed body 16 by the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16. Furthermore, in addition to the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16, the abutting portion 62 of the reinforcing plate 60 and the abutted portion 162 of the fixed body 16 position the reinforcing plate 60 particularly accurately relative to the fixed body 16, and the coil 32 can be particularly accurately positioned relative to the fixed body 16. Furthermore, by pressing the convex portion 61 of the reinforcing plate 60 into the contact portion 161 of the fixed body 16, the convex portion 61 of the reinforcing plate 60 and the contact portion 161 of the fixed body 16 can be accurately positioned and fixed simply and without causing any rattling. Furthermore, since there is no need to temporarily fix with UV adhesive or the like, the coil 32 can be easily positioned relative to the fixed body 16. However, for example, a further step may be performed in which at least one of the reinforcing plate 60 and the flexible printed circuit board 52 is adhered to the fixed body 16 with an adhesive as a permanent fixation rather than a temporary fixation.

The present invention is not limited to the above-mentioned embodiments, and can be realized in various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention column can be replaced or combined as appropriate to solve some or all of the above-mentioned problems or to achieve some or all of the above-mentioned effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate.

1...optical unit, 12...optical module, 12a...lens, 14...movable body, 14A...movable body main body, 14B...holder, 14a...mounting position, 16...fixed body, 16e...mounting position, 16f...coil arrangement position, 16g...coil arrangement position, 18...driving mechanism, 18A...driving mechanism, 18B...driving mechanism, 20...support mechanism, 21...first leg, 21a...concave surface, 22...second leg, 22a...concave surface, 23...gimbal frame, 24...magnet (driving mechanism), 24A...magnet, 24B...magnet, 32...coil (driving mechanism), 32A...coil, 32B...coil, 33...Hall element (driving mechanism) , 33A...Hall element, 33B...Hall element, 41...Fixed body side support part, 41a...Convex curved surface, 42...Movable body side support part, 42a...Convex curved surface, 50...Imaging element, 51...Flexible printed circuit board, 52...Flexible printed circuit board (driving mechanism), 60...Reinforcing plate (driving mechanism), 60A...Reinforcing plate, 60B...Reinforcing plate, 61...Convex part, 62...Abutting part, 100...Smartphone, 101...Cover glass, 161...Contacting part, 161b...Contacting part, 161d...Contacting part, 162...Abutted part, 162a...Abutted part, 162c...Abutted part, D1...Incoming direction (optical axis direction), L1...First axis, L2...Second axis

Claims (5)

a movable body including an optical module;
a fixed body that rotatably supports the movable body around a rotation axis that intersects with an optical axis direction of the optical module;
a drive mechanism for rotating the movable body relative to the fixed body,
The driving mechanism includes a magnet provided in the movable body, a coil provided in the fixed body,
a flexible printed circuit board connected to the coil; and a plurality of reinforcing plates to which the coil and the flexible printed circuit board are fixed,
Each of the reinforcing plates has a protrusion protruding in the optical axis direction at both ends in a direction intersecting the optical axis direction , and the fixed body has a contact portion with which the protrusion comes into contact ,
the fixed body is provided with an abutted portion that is abutted by an abutting portion provided in an area of the reinforcing plate opposite to the protrusion when the protrusion contacts the contact portion,
An optical unit characterized in that each of the reinforcing plates is fixed to one surface of the fixed body by the abutting portion abutting the abutted portion and the convex portion contacting the contact portion . 2. The optical unit according to claim 1 ,
The optical unit according to claim 1, wherein the contact direction of the protrusion with respect to the contact portion is the optical axis direction. 3. The optical unit according to claim 1,
The optical unit according to claim 1, wherein the protrusion and the contact portion are in contact with each other by being press-fitted into the contact portion. 4. The optical unit according to claim 1,
At least one of the reinforcing plate and the flexible printed circuit board is adhered to the fixed body with an adhesive. a movable body having an optical module; a fixed body that rotatably supports the movable body with a rotation axis in a direction intersecting an optical axis direction of the optical module; and a drive mechanism that rotates and moves the movable body relative to the fixed body,
The driving mechanism includes a magnet provided in the movable body, a coil provided in the fixed body,
A method for manufacturing an optical unit having a flexible printed circuit board connected to the coil and a plurality of reinforcing plates to which the coil and the flexible printed circuit board are fixed, comprising the steps of:
providing each of the reinforcing plates with a protrusion protruding in the optical axis direction at both ends in a direction intersecting the optical axis direction ;
fixing the coil and the flexible printed circuit board to the reinforcing plate;
forming the fixed body having a contact portion capable of contacting the protruding portion and an abutted portion capable of abutting an abutting portion provided in an area of the reinforcing plate opposite the protruding portion;
and fixing each of the reinforcing plates to one surface of the fixed body by bringing the abutting portion into contact with the abutted portion while bringing the convex portion into contact with the contact portion.

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