Optical unit and method for manufacturing the same

Abstract

To provide an optical unit capable of preventing a magnet and a magnetic member from peeling and positionally deviating, and a method for manufacturing the optical unit.SOLUTION: An optical unit 1 includes a movable body 2, a support 3, a swinging mechanism 120, a magnet 151, and a magnetic member 152. The movable body includes an optical element 10 changing the traveling direction of light. The support swingably supports the movable body around a swinging axis line. The swinging mechanism swings the movable body around the swinging axis line. The magnet is arranged in one of the movable body and the support. The magnetic member is arranged in the other of the movable body and the support. As viewed from a direction in which the support supports the movable body, the magnet overlaps with the magnetic member. At least one of the movable body and the support includes a coating part 301 arranged between the magnet and the magnetic member, and the coating part coats at least a part of the outline of one of the magnet and the magnetic member.SELECTED DRAWING: Figure 5C

Description

[Technical field]

[0001] The present invention relates to an optical unit and a method for manufacturing an optical unit. [Background technology]

[0002] 2. Description of the Related Art When taking still or moving images with a camera, image blurring may occur due to camera shake. To prevent this, image stabilization devices have been put to practical use to enable clear photography.

[0003] For example, Patent Document 1 describes a reflection module having a reflection member, a holder, and a first housing. The reflection member is attached to the holder. The first housing accommodates the holder. The holder freely rotates about a first axis and a second axis within the first housing. In addition, a first yoke and a magnet that are magnetically attracted to each other are disposed on the opposing surfaces of the holder and the first housing, respectively. The first yoke is provided as a magnetic material. The magnet is attached to a surface of the holder. The first yoke is attached to a surface of the first housing. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] US Patent Application Publication No. 2018 / 0109660 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in a reflection module such as that disclosed in Patent Document 1, the magnet is usually attached to the surface of the holder with an adhesive, and the yoke is usually attached to the surface of the housing with an adhesive.

[0006] However, when the magnet and the yoke are attached to the surfaces of the holder and the housing using an adhesive, the magnet and the yoke may peel off from the surfaces of the holder and the housing, or may shift from their attached positions.

[0007] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide an optical unit and a method for manufacturing an optical unit that can prevent magnets and magnetic components from peeling off or becoming misaligned. [Means for solving the problem]

[0008] An exemplary optical unit of the present invention includes a movable body, a support, a swing mechanism, a magnet, and a magnetic member. The movable body includes an optical element that changes the direction of travel of light. The support supports the movable body so that it can swing about a swing axis. The swing mechanism swings the movable body about the swing axis. The magnet is disposed on one of the movable body and the support. The magnetic member is disposed on the other of the movable body and the support. The magnet and the magnetic member overlap. At least one of the movable body and the support has a covering portion disposed between the magnet and the magnetic member, and the covering portion covers at least a portion of the outline of one of the magnet and the magnetic member.

[0009] Another exemplary manufacturing method of an optical unit of the present invention is a manufacturing method of an optical unit having a movable body, a support, a swing mechanism, a magnet, and a magnetic member. The movable body has an optical element that changes the traveling direction of light. The support supports the movable body so that it can swing around a swing axis. The swing mechanism swings the movable body around the swing axis. The magnet is disposed on one of the movable body and the support. The magnetic member is disposed on the other of the movable body and the support. The magnet and the magnetic member overlap. The manufacturing method of the optical unit includes a step of disposing the magnet or the magnetic member in a mold, a step of injecting resin into the mold to mold at least one of the movable body and the support, and a step of supporting the movable body by the support. By the molding step, at least one of the movable body and the support has a covering portion that covers at least a part of the outline of the magnet and the magnetic member. In the supporting step, the covering portion is disposed between the magnet and the magnetic member. Effect of the Invention

[0010] According to the illustrative embodiment of the present invention, it is possible to provide an optical unit and a method for manufacturing the optical unit that can prevent the magnets and magnetic members from peeling off or becoming displaced. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing a schematic diagram of a smartphone equipped with an optical unit according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing the optical unit according to the present embodiment. [Diagram 3] FIG. 3 is an exploded perspective view of the optical unit according to the present embodiment, disassembled into a movable body and a support body. [Figure 4] FIG. 4 is an exploded perspective view of a movable body of the optical unit according to the present embodiment. [Figure 5A] FIG. 5A is a cross-sectional view taken along line VA-VA in FIG. [Figure 5B]FIG. 5B is a cross-sectional view taken along line VB-VB in FIG. [Figure 5C] FIG. 5C is a cross-sectional view taken along line VC-VC in FIG. [Figure 5D] FIG. 5D is a cross-sectional view taken along line VD-VD in FIG. [Figure 6] FIG. 6 is an exploded perspective view of the optical elements and the holder of the optical unit according to this embodiment. [Figure 7] FIG. 7 is an exploded perspective view showing the optical elements, the holder, and the preload portion of the optical unit according to the present embodiment. [Figure 8] FIG. 8 is an exploded perspective view showing the optical elements, the holder, the preload portion, the first support portion, and the second magnet of the optical unit according to the present embodiment. [Figure 9] FIG. 9 is a perspective view showing a movable body of the optical unit according to the present embodiment. [Figure 10] FIG. 10 is a diagram showing the first support portion of the optical unit according to this embodiment from one side X1 in the first direction X. As shown in FIG. [Figure 11] FIG. 11 is an exploded perspective view of the support body of the optical unit according to this embodiment. [Figure 12] FIG. 12 is a perspective view showing the periphery of the second support portion of the optical unit according to the present embodiment. [Figure 13] FIG. 13 is a view showing the second support portion of the optical unit according to this embodiment from the other side X2 in the first direction X. As shown in FIG. [Figure 14] FIG. 14 is a cross-sectional view showing the structure of an optical unit according to a first modified example of this embodiment. [Figure 15] FIG. 15 is a schematic cross-sectional view for explaining a manufacturing method of a first support portion of an optical unit according to a first modified example of this embodiment. [Figure 16] FIG. 16 is a cross-sectional view showing the structure of an optical unit according to a second modified example of this embodiment. [Figure 17] FIG. 17 is a cross-sectional view showing the structure of an optical unit according to a third modified example of this embodiment. [Figure 18]FIG. 18 is a cross-sectional view showing the structure of an optical unit according to a fourth modified example of this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and description thereof will not be repeated.

[0013] In this specification, for ease of understanding, the first direction X, the second direction Y, and the third direction Z that intersect with each other are described as appropriate. In this specification, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other, but they do not have to be perpendicular to each other. In addition, one side of the first direction is described as one side X1 of the first direction X, and the other side of the first direction is described as the other side X2 of the first direction X. In addition, one side of the second direction is described as one side Y1 of the second direction Y, and the other side of the second direction is described as the other side Y2 of the second direction Y. In addition, one side of the third direction is described as one side Z1 of the third direction Z, and the other side of the third direction is described as the other side Z2 of the third direction Z. In addition, for convenience, the first direction X may be described as the up-down direction. One side X1 of the first direction X indicates the downward direction, and the other side X2 of the first direction X indicates the upward direction. However, the up-down direction, the upper direction, and the lower direction are defined for the convenience of explanation and do not necessarily correspond to the vertical direction. Furthermore, the up-down direction is defined merely for the convenience of explanation and does not limit the orientation of the optical unit according to the present invention when it is used or assembled.

[0014] First, an example of an application of the optical unit 1 will be described with reference to FIG. 1. FIG. 1 is a perspective view that shows a smartphone 200 including the optical unit 1 according to an embodiment of the present invention. The smartphone 200 has the optical unit 1. The optical unit 1 reflects incident light in a specific direction. As shown in FIG. 1, the optical unit 1 is preferably used as an optical component of the smartphone 200, for example. Note that the application of the optical unit 1 is not limited to the smartphone 200, and it can be used in various devices such as digital cameras and video cameras.

[0015] The smartphone 200 has a lens 202 into which light is incident. In the smartphone 200, the optical unit 1 is disposed inside the lens 202. When light L enters the smartphone 200 through the lens 202, the traveling direction of the light L is changed by the optical unit 1. Then, the light L is captured by an imaging element (not shown) via a lens unit (not shown).

[0016] Next, the optical unit 1 will be described with reference to FIG. 2 to FIG. 13. FIG. 2 is a perspective view showing the optical unit 1 according to this embodiment. FIG. 3 is an exploded perspective view of the optical unit 1 according to this embodiment, which is disassembled into a movable body 2 and a support body 3. As shown in FIG. 2 and FIG. 3, the optical unit 1 has at least the movable body 2, the support body 3, and a second oscillation mechanism 120. In this embodiment, the optical unit 1 has a magnet 151 and a magnetic member 152 (FIG. 4). In this embodiment, the optical unit 1 further has a first oscillation mechanism 110. In this embodiment, the optical unit 1 further has a preload section 40. The second oscillation mechanism 120 is an example of the "oscillating mechanism" of the present invention. A detailed description will be given below.

[0017] Fig. 4 is an exploded perspective view of the movable body 2 of the optical unit 1 according to this embodiment. As shown in Figs. 2 to 4, the optical unit 1 has the movable body 2 and a support body 3. The support body 3 supports the movable body 2 so as to be able to swing about a second swing axis A2. The second swing axis A2 is an example of the "swing axis" in the present invention.

[0018] The movable body 2 has an optical element 10. The movable body 2 also has a holder 20 and a first support portion 30. The movable body 2 also has a preload portion 40. The optical element 10 changes the traveling direction of light. The holder 20 holds the optical element 10. The first support portion 30 supports the holder 20 and the optical element 10 so as to be swingable about a first oscillation axis A1 that intersects with the second oscillation axis A2. The first support portion 30 is also supported by the support 3 so as to be swingable about the second oscillation axis A2. More specifically, the first support portion 30 is supported by the second support portion 60 of the support 3 so as to be swingable about the second oscillation axis A2.

[0019] That is, the holder 20 can be swung relative to the first support part 30, and the first support part 30 can be swung relative to the second support part 60. Therefore, since the optical element 10 can be swung about each of the first swing axis A1 and the second swing axis A2, the attitude of the optical element 10 can be corrected about each of the first swing axis A1 and the second swing axis A2. Therefore, image blur can be suppressed in two directions. As a result, the correction accuracy can be improved compared to the case where the optical element 10 is swung about only one swing axis. The first swing axis A1 is also called a pitching axis. The second swing axis A2 is also called a roll axis.

[0020] In this embodiment, as described above, the first support section 30 supports the holder 20 and the optical element 10. The first support section 30 is supported by the second support section 60. That is, the holder 20 and the optical element 10 are indirectly supported by the second support section 60 of the support body 3 via the first support section 30. Note that the holder 20 and the optical element 10 may be directly supported by the second support section 60 of the support body 3 without via the first support section 30. That is, the movable body 2 does not need to have the first support section 30.

[0021] The first oscillation axis A1 is an axis extending along the third direction Z intersecting the first direction X and the second direction Y. The second oscillation axis A2 is an axis extending along the first direction X. Therefore, the optical element 10 can be oscillated around the first oscillation axis A1 intersecting the first direction X and the second direction Y. Also, the optical element 10 can be oscillated around the second oscillation axis A2 extending along the first direction X. Therefore, the attitude of the optical element 10 can be appropriately corrected. Also, the first direction X and the second direction Y are directions along the traveling direction of the light L (FIG. 5A). That is, the optical element 10 can be oscillated around the first oscillation axis A1 intersecting the first direction X and the second direction Y, which are the traveling directions of the light. Therefore, the attitude of the optical element 10 can be more appropriately corrected.

[0022] Moreover, the first support part 30 supports the holder 20 in the third direction Z. Therefore, the first support part 30 can be easily swung about the first swing axis A1 extending along the third direction Z. Specifically, in this embodiment, the first support part 30 supports the holder 20 in the third direction Z via the preload part 40.

[0023] FIG. 5A is a cross-sectional view taken along the line VA-VA in FIG. 2. FIG. 5B is a cross-sectional view taken along the line VB-VB in FIG. 2. FIG. 5C is a cross-sectional view taken along the line VC-VC in FIG. 2. FIG. 5D is a cross-sectional view taken along the line VD-VD in FIG. 2. FIG. 6 is an exploded perspective view of the optical element 10 and the holder 20 of the optical unit 1 according to this embodiment. As shown in FIGS. 5A to 5D and 6, the optical element 10 is made of a prism. The prism is made of a transparent material having a refractive index higher than that of air. The optical element 10 may be, for example, a plate-shaped mirror. In this embodiment, the optical element 10 has a substantially triangular prism shape. Specifically, the optical element 10 has a light incident surface 11, a light exit surface 12, a reflecting surface 13, and a pair of side surfaces 14. Light L is incident on the light incident surface 11. The light exit surface 12 is connected to the light incident surface 11. The light exit surface 12 is disposed perpendicular to the light incident surface 11. The reflecting surface 13 is connected to the light incident surface 11 and the light exit surface 12. The reflecting surface 13 is inclined at approximately 45 degrees with respect to each of the light incident surface 11 and the light exit surface 12. The reflecting surface 13 reflects the light L traveling in one side X1 of the first direction X to one side Y1 of the second direction Y intersecting with the first direction X. That is, the optical element 10 reflects the light L traveling in one side X1 of the first direction X to one side Y1 of the second direction Y intersecting with the first direction X. A pair of side surfaces 14 are connected to the light incident surface 11, the light exit surface 12, and the reflecting surface 13.

[0024] In addition, the optical axis L10 of the optical element 10 and the second oscillation axis A2 are arranged to overlap. In this specification, the optical axis L10 of the optical element 10 means an axis that coincides with at least one of the following: an axis that is perpendicular to the light incident surface 11 of the optical element 10 and passes through the center of the reflecting surface 13, or the optical axis of the lens 202 into which light is incident, or an axis that passes through the intersection of the optical axis of the lens unit at the reflection destination and the reflecting surface 13 and extends in a direction perpendicular to the optical axis of the lens unit, or an axis that passes through the intersection of the reflecting surface 13 and a line passing through the center of the imaging element and a line passing through the center of the imaging element. Typically, the axis that is perpendicular to the light incident surface 11 of the optical element 10 and passes through the center of the reflecting surface 13, the optical axis of the lens 202 into which the light is incident, the axis that passes through the intersection of the optical axis of the lens unit at the destination of reflection and the reflecting surface 13 and extends in a direction perpendicular to the optical axis of the lens unit, and the axis that passes through the intersection of the line passing through the center of the imaging element and the reflecting surface 13 and extends in a direction perpendicular to the line passing through the center of the imaging element, all coincide.

[0025] At least one of the holder 20 and the first support portion 30 has a recessed portion recessed on the side opposite the preload portion 40, or a protruding portion protruding toward the preload portion 40. In this embodiment, the holder 20 has an axial recessed portion 22b recessed on the side opposite the preload portion 40.

[0026] Specifically, the holder 20 is made of, for example, resin. The holder 20 has a holder main body 21 and a pair of side surface portions 22. The holder 20 also has a pair of opposing side surfaces 22a and an axial recess 22b.

[0027] The holder body 21 extends in the third direction Z. The holder body 21 has a support surface 21a and a plurality of recesses 21d. In this embodiment, the holder body 21 has three recesses 21d. The support surface 21a supports the optical element 10. The support surface 21a faces the reflecting surface 13 of the optical element 10 and is connected to a pair of side portions 22. The support surface 21a is an inclined surface inclined at about 45 degrees with respect to the incident direction of the light L, and contacts the reflecting surface 13 of the optical element 10 over substantially the entire area of ​​the inclined surface. The incident direction of the light L is a direction toward one side X1 of the first direction X. The recesses 21d are disposed on the support surface 21a. The recesses 21d are recessed on the opposite side to the optical element 10. Note that the holder body 21 does not necessarily have the recesses 21d.

[0028] The holder body 21 also has a rear surface 21b and a bottom surface 21c. The rear surface 21b is connected to an end of the support surface 21a on the opposite side to the emission direction of the light L. The "emission direction of the light L" is one side Y1 of the second direction Y. The "end on the opposite side to the emission direction of the light L" is an end on the other side Y2 of the second direction Y. The bottom surface 21c is connected to the support surface 21a and the rear surface 21b.

[0029] The pair of side portions 22 extend from the holder body 21 in a cross direction crossing the third direction Z. The cross direction includes, for example, the first direction X and the second direction Y. The pair of side portions 22 are arranged at both ends of the holder body 21 in the third direction Z. The pair of side portions 22 have shapes symmetrical to each other in the third direction Z. The pair of opposing side surfaces 22a are arranged on each of the pair of side portions 22. The pair of opposing side surfaces 22a face the pair of preload portions 40, respectively. The detailed structure of the preload portion 40 will be described later. The axial recess 22b is arranged on the opposing side surface 22a. The axial recess 22b is recessed toward the inside of the holder 20 on the first swing axis A1. The axial recess 22b accommodates at least a part of the axial protrusion 45 of the preload portion 40. The axial recess 22b has at least a part of a concave spherical surface.

[0030] Further, one of the holder 20 and the first support portion 30 has a limiting recess 22c. The limiting recess 22c limits the movement of the protruding portion 46 of the preload portion 40 in a direction intersecting with the first swing axis A1.

[0031] In this embodiment, the holder 20 has a limiting recess 22c. Specifically, the limiting recess 22c is disposed on the opposing side surface 22a. The limiting recess 22c limits the preload portion 40 from moving a predetermined distance or more along the side surface portion 22. More specifically, the limiting recess 22c is recessed toward the inside of the holder 20 in the third direction Z. The limiting recess 22c has an inner surface 22d. For example, the limiting recess 22c may be a recess that is closed on both sides in the first direction X and both sides in the second direction Y. Also, for example, the limiting recess 22c may be a recess that is open on one side in the first direction X, or a recess that is open on one side in the second direction Y.

[0032] The protrusion 46 of the preload portion 40 is disposed inside the limiting recess 22c. The protrusion 46 of the preload portion 40 is spaced a predetermined distance from the inner surface 22d of the limiting recess 22c when the axial convex portion 45 is fitted into the axial recess 22b. On the other hand, when an impact or the like is applied to the optical unit 1 and the holder 20 is about to move a predetermined distance or more in the first direction X and the second direction Y, for example, the protrusion 46 of the preload portion 40 contacts the inner surface 22d of the limiting recess 22c. Therefore, it is possible to prevent the holder 20 from coming off the preload portion 40. In this embodiment, for example, four limiting recesses 22c are provided. The number of limiting recesses 22c may be one, but is preferably multiple.

[0033] The optical unit 1 has a preload portion 40. The preload portion 40 connects the holder 20 and the first support portion 30. The preload portion 40 is elastically deformable. The preload portion 40 is disposed on at least one of the holder 20 and the first support portion 30. The preload portion 40 applies a preload to at least the other of the holder 20 and the first support portion 30 in the axial direction of the first swing axis A1. Therefore, it is possible to suppress the holder 20 from being displaced in the axial direction of the first swing axis A1 relative to the first support portion 30. Even if a manufacturing error occurs in the dimensions of each member, it is possible to suppress the occurrence of wobbling or the like in the axial direction of the first swing axis A1. In other words, for example, it is possible to suppress the displacement of the position of the holder 20 in the axial direction of the first swing axis A1. The axial direction of the first swing axis A1 is a direction along the third direction Z. In this specification, the term "applying a preload" means applying a load in advance.

[0034] Next, the detailed structure of the preload portion 40 will be described with reference to Figs. 7 and 8. Fig. 7 is an exploded perspective view showing the optical element 10, holder 20, and preload portion 40 of the optical unit 1 according to this embodiment. Fig. 8 is an exploded perspective view showing the optical element 10, holder 20, preload portion 40, first support portion 30, and second magnet 121 of the optical unit 1 according to this embodiment. As shown in Figs. 7 and 8, the preload portion 40 is disposed between the holder 20 and the first support portion 30. The preload portion 40 applies a preload to the holder 20 in the axial direction of the first oscillation axis A1.

[0035] Specifically, in this embodiment, each preload portion 40 is a single member. The preload portion 40 is formed by bending a single plate member. In this embodiment, the preload portion 40 is a leaf spring. The preload portion 40 is disposed on the first support portion 30.

[0036] The preload portion 40 has a first surface portion 41 located on the holder 20 side, a second surface portion 42 located on the first support portion 30 side, and a curved portion 43 connecting the first surface portion 41 and the second surface portion 42. Therefore, the preload portion 40 can be easily deformed in the axial direction of the first oscillation axis A1. As a result, an elastic force is generated by the bending of the curved portion 43, so that a preload can be easily applied to the holder 20 in the axial direction with a simple configuration.

[0037] Specifically, the first surface portion 41 faces the holder 20 in the axial direction of the first swing axis A1. The first surface portion 41 faces the side surface portion 22 of the holder 20. The first surface portion 41 extends along the first direction X and the second direction Y. The first surface portion 41 is disposed along the side surface portion 22. The second surface portion 42 faces the first support portion 30 in the axial direction of the first swing axis A1. The second surface portion 42 faces the side surface portion 32 of the first support portion 30. The second surface portion 42 extends along the first direction X and the second direction Y. The second surface portion 42 is disposed along the side surface portion 32.

[0038] The curved portion 43 is elastically deformable. Therefore, the first surface portion 41 and the second surface portion 42 can move in a direction to approach or separate from each other. In this embodiment, with the preload portion 40 disposed between the holder 20 and the first support portion 30, the preload portion 40 is compressively deformed in the axial direction of the first oscillation axis A1 so that the first surface portion 41 and the second surface portion 42 approach each other. Therefore, the preload portion 40 applies a preload to the holder 20 by a reaction force according to the amount of deformation.

[0039] The preload portion 40 has a convex portion that protrudes toward at least one of the holder 20 and the first support portion 30, or a concave portion that is recessed toward the opposite side of at least one of the holder 20 and the first support portion 30. The convex portion or concave portion of the preload portion 40 contacts the concave portion or convex portion of at least one of the holder 20 and the first support portion 30. In this embodiment, the preload portion 40 has an axial convex portion 45. The axial convex portion 45 protrudes toward the holder 20. The axial convex portion 45 of the preload portion 40 contacts the axial concave portion 22b of the holder 20.

[0040] In this embodiment, the axial convex portion 45 is disposed on the first surface portion 41. The axial convex portion 45 protrudes toward the holder 20 on the first oscillation axis A1. The axial convex portion 45 has at least a portion of a spherical surface. A portion of the axial convex portion 45 is housed in the axial concave portion 22b. Therefore, the axial convex portion 45 and the axial concave portion 22b are in point contact with each other, so that the holder 20 can be stably supported by the preload portion 40.

[0041] Moreover, in this embodiment, a pair of preload portions 40 are provided. That is, the optical unit 1 has a pair of preload portions 40. The pair of preload portions 40 are arranged on both sides of the holder 20 in the axial direction of the first oscillation axis A1. Therefore, compared to a case in which the preload portions 40 are arranged on only one side of the holder 20, the holder 20 can be supported more stably.

[0042] Specifically, the axial convex portions 45 of the pair of preload portions 40 respectively contact the pair of axial concave portions 22b of the holder 20. The holder 20 is supported from both sides in the axial direction of the first oscillation axis A1 by the preload portions 40 at two contact points that contact the axial convex portions 45. Therefore, the holder 20 can swing about the first oscillation axis A1 that passes through the two contact points.

[0043] Moreover, the preload portion 40 further has a protruding portion 46. The protruding portion 46 is disposed on one of the first surface portion 41 and the second surface portion 42, and protrudes toward one of the holder 20 and the first support portion 30. In this embodiment, the protruding portion 46 is disposed on the first surface portion 41, similar to the axial protruding portion 45. The protruding portion 46 protrudes toward the holder 20 in a direction along the first swing axis A1. The protruding portion 46 is provided corresponding to the limiting recess 22c. For example, four protruding portions 46 are provided on each preload portion 40. A part of the protruding portion 46 is accommodated in the limiting recess 22c. The protruding portion 46 is disposed so as to surround the axial protruding portion 45. In other words, the axial protruding portion 45 is disposed inside a region including the four protruding portions 46. The number of the protruding portions 46 may be, for example, one to three, or five or more. Moreover, the protrusion 46 is formed by bending an end portion of the first surface portion 41.

[0044] The preload portion 40 has an attachment portion 47. The attachment portion 47 is disposed on, for example, the second surface portion 42. The attachment portion 47 is disposed on an upper end of the second surface portion 42. The attachment portion 47 is attached to an upper end of the side surface portion 32 of the first support portion 30. The attachment portion 47 is attached to the side surface portion 32, for example, by sandwiching the upper end of the side surface portion 32 in the first direction X. Note that the preload portion 40 does not need to have the attachment portion 47, and may be fixed to the first support portion 30 using, for example, an adhesive or the like.

[0045] Fig. 9 is a perspective view showing the movable body 2 of the optical unit 1 according to this embodiment. Fig. 10 is a view showing the first support part 30 of the optical unit 1 according to this embodiment from one side X1 in the first direction X. Fig. 11 is an exploded perspective view of the support body 3 of the optical unit 1 according to this embodiment. Fig. 12 is a perspective view showing the periphery of the second support part 60 of the optical unit 1 according to this embodiment.

[0046] As shown in FIG. 9 to FIG. 12, one of the movable body 2 and the support 3 has a first convex portion 71 that protrudes toward the other of the movable body 2 and the support 3. Specifically, one of the first support portion 30 and the second support portion 60 has a first convex portion 71 that protrudes toward the other of the first support portion 30 and the second support portion 60. The other of the movable body 2 and the support 3 contacts the first convex portion 71. The first convex portion 71 is disposed on the second oscillation axis A2. Therefore, the movable body 2 oscillates around the first convex portion 71. Therefore, the length from the contact position between the movable body 2 and the support 3 to the oscillation center can be reduced. Since the force required to oscillate the movable body 2 is the product of the length from the contact position to the oscillation center and the friction force, the force required to oscillate the movable body 2 can be reduced by disposing the first convex portion 71 on the second oscillation axis A2. In other words, the force required to drive the optical unit 1 can be reduced. The material of the first protrusion 71 is not particularly limited, but the first protrusion 71 is formed of, for example, ceramic, resin, or metal.

[0047] Furthermore, by arranging the first convex portion 71 on the second oscillation axis A2, the contact position between the movable body 2 and the support 3 does not move relative to the first convex portion 71. Therefore, for example, the frictional force between the other of the movable body 2 and the support 3 and the first convex portion 71 can be reduced compared to a case in which the other of the movable body 2 and the support 3 slides relative to the first convex portion 71 when the movable body 2 oscillates. Furthermore, since the optical axis L10 and the second oscillation axis A2 are arranged to overlap with each other, it is possible to suppress deviation of the optical axis L10 from the second oscillation axis A2 when the movable body 2 is oscillated.

[0048] Moreover, in this embodiment, the support 3 has the first convex portion 71. Therefore, it is possible to prevent the first convex portion 71 from rotating when the movable body 2 oscillates. Therefore, the movable body 2 can be stably supported by the first convex portion 71. As a result, the oscillation of the movable body 2 is stabilized.

[0049] Moreover, one of the movable body 2 and the support 3 has a plurality of second convex parts 72 that protrude toward the other of the movable body 2 and the support 3. Specifically, one of the first support part 30 and the second support part 60 has a plurality of second convex parts 72 that protrude toward the other of the first support part 30 and the second support part 60. The plurality of second convex parts 72 are arranged at a position separated from the second oscillation axis A2. The other of the movable body 2 and the support 3 contacts the plurality of second convex parts 72. The first convex part 71 and the plurality of second convex parts 72 are arranged on the same plane that intersects with the second oscillation axis A2. Therefore, the movable body 2 can be supported by the first convex part 71 and the plurality of second convex parts 72 arranged on the same plane. As a result, the movable body 2 can be stably supported. In addition, the same plane on which the first convex part 71 and the plurality of second convex parts 72 are arranged may be, for example, a plane including the opposing surface 61a or a plane including the lower surface 31e. Further, the material of the second protrusion 72 is not particularly limited, but the second protrusion 72 is formed of, for example, ceramic, resin, or metal.

[0050] Furthermore, the position of the second convex portion 72 is constant. In other words, the second convex portion 72 does not move relative to either the movable body 2 or the support body 3. In this embodiment, the second convex portion 72 does not move relative to the support body 3. In other words, in this embodiment, even when the movable body 2 swings, the position of the second convex portion 72 relative to the support body 3 is constant. Therefore, the movable body 2 can be supported more stably.

[0051] In addition, in this embodiment, the number of second convex portions 72 is two. Therefore, since the movable body 2 is supported by three convex portions (the first convex portion 71 and the second convex portion 72), the movable body 2 can be supported more stably than when the movable body 2 is supported by four or more convex portions. Also, in this embodiment, point contact with the movable body 2 is made at three points, so the movable body 2 can be supported more stably.

[0052] The other of the movable body 2 and the support 3 has a first recess 31f recessed in the opposite direction to the first protrusion 71. The first recess 31f contacts the first protrusion 71. Therefore, by receiving the first protrusion 71 in the concave first recess 31f, it is possible to suppress the center of the first protrusion 71 from being shifted from the central axis of the first recess 31f. As a result, it is possible to suppress image blurring caused by a shift in the center of rotation. In addition, it is possible to suppress the oscillation of the movable body 2 from becoming unstable due to a shift in the center of rotation. As a result, for example, it is possible to suppress fluctuations in the current value required for oscillation.

[0053] In this embodiment, the movable body 2 has the first recess 31f, and the support body 3 has the first convex portion 71. Therefore, when the first convex portion 71 is a sphere, the movable body 2 can be assembled to the support body 3 with the sphere disposed on the second support portion 60, which facilitates the assembly work.

[0054] Next, the structure around the first support part 30 will be described in detail with reference to Fig. 8 and Fig. 9. As shown in Fig. 8 and Fig. 9, the first support part 30 has a support main body 31 and a pair of side surface parts 32. The pair of side surface parts 32 are disposed on both sides of the holder 20 in the axial direction of the first oscillation axis A1. The support main body 31 connects the pair of side surface parts 32.

[0055] The support body 31 has an upper surface 31a. The upper surface 31a faces the holder 20 in the first direction X. The upper surface 31a is spaced apart from the bottom surface of the holder 20.

[0056] The pair of side surface portions 32 are disposed on both ends of the support body 31 in the third direction Z. The pair of side surface portions 32 have shapes that are symmetrical to each other in the third direction Z. The side surface portion 32 has an inner surface 32a. The inner surface 32a faces the holder 20 in the third direction Z.

[0057] One of the first support part 30 and the holder 20 has a groove 32b. The groove 32b is recessed on the side opposite to the other of the first support part 30 and the holder 20 on the first swing axis A1. Therefore, the holder 20 and the preload part 40 can be easily attached to the first support part 30 by moving the preload part 40 along the groove 32b. In this embodiment, the first support part 30 has the groove 32b. The groove 32b is recessed on the side opposite to the holder 20 on the first swing axis A1. The groove 32b accommodates at least a portion of the preload part 40 and extends in a direction intersecting the first swing axis A1.

[0058] In this embodiment, the groove 32b is disposed on the inner surface 32a. The groove 32b accommodates a portion of the preload portion 40. The groove 32b extends in the first direction X.

[0059] Each side surface portion 32 has a pair of support pillars 32c and a connecting portion 32d. The pair of support pillars 32c are spaced apart from each other in the second direction Y. The support pillars 32c extend in the first direction X. The connecting portion 32d connects the upper portions of the support pillars 32c to each other. The length of the connecting portion 32d in the third direction Z is shorter than the length of the support pillars 32c in the third direction Z. The pair of support pillars 32c and the connecting portion 32d form a groove 32b.

[0060] Moreover, the preload portion 40 is movable along the groove 32b. In this embodiment, the preload portion 40 is movable in the first direction X along the groove 32b. By moving the preload portion 40 along the groove 32b, the attachment portion 47 of the preload portion 40 sandwiches the connection portion 32d in the third direction Z. Thus, the preload portion 40 is fixed to the first support portion 30.

[0061] The side surface portion 32 has an outer surface 32e and an accommodating recess 32f. The outer surface 32e faces outward in the third direction Z. The accommodating recess 32f is disposed on the outer surface 32e. The accommodating recess 32f accommodates at least a part of the second magnet 121 of the second rocking mechanism 120. The side surface portion 32 has a pair of notches 32g. The notches 32g are disposed at the ends of the accommodating recess 32f in the second direction Y. The protrusions 122a of the magnet support plate 122 are disposed in the notches 32g. The magnet support plate 122 supports the second magnet 121. The notches 32g support the magnet support plate 122. The material of the magnet support plate 122 is not particularly limited, but may be, for example, a magnetic material. In this case, the magnet support plate 122 is also called a back yoke. By using the magnet support plate 122 made of a magnetic material, magnetic leakage can be suppressed.

[0062] In addition, the other of the movable body 2 and the support body 3 has a second recess 31g. In this embodiment, the movable body 2 has the second recess 31g. Specifically, the support body 31 has a lower surface 31e, a first recess 31f, and a second recess 31g. The lower surface 31e faces the support body 3 in the first direction X. The first recess 31f and the second recess 31g are disposed on the lower surface 31e.

[0063] The first recess 31f is disposed on the second oscillation axis A2. The first recess 31f has a part of a concave spherical surface. Therefore, since the first protrusion 71 is received by the concave spherical surface, for example, the first protrusion 71 is less likely to slip sideways within the first recess 31f. As a result, the movable body 2 can be stably supported. On the other hand, for example, if the first recess 31f has a rectangular cross section, the first protrusion 71 is likely to slip sideways relative to the first recess 31f. Also, in this embodiment, for example, unlike the case where the first protrusion 71 and the first recess 31f have a rectangular cross section, the first protrusion 71 and the first recess 31f can be easily brought into point contact.

[0064] The second recess 31g is recessed in the opposite direction to the second protrusion 72. The second recess 31g is spaced apart from the first recess 31f. That is, the second recess 31g is spaced apart from the second oscillation axis A2. A plurality of second recesses 31g are provided. In this embodiment, two second recesses 31g are provided. The two second recesses 31g are disposed at positions that are equidistant to the second oscillation axis A2. The second recess 31g has a sliding surface 31h and an inner surface 31i.

[0065] Moreover, the second recess 31g contacts the second protrusion 72. Specifically, the sliding surface 31h of the second recess 31g contacts the second protrusion 72. The sliding surface 31h is disposed substantially parallel to the lower surface 31e. That is, the depth of the second recess 31g is substantially constant.

[0066] Also, as shown in FIG. 10, the contour of the second recess 31g is disposed outside the second convex portion 72 as viewed from the optical axis direction. Therefore, it is possible to suppress the second convex portion 72 from contacting the inner surface 31i of the second recess 31g. As a result, it is possible to suppress friction between the second convex portion 72 and the second recess 31g. Specifically, the inner surface 31i surrounds the sliding surface 31h. The inner surface 31i is separated from the second convex portion 72. That is, as viewed from the optical axis direction, the contour of the second recess 31g is separated from the second convex portion 72. Also, the inner surface 31i is disposed at a position where the second convex portion 72 does not come into contact with the inner surface 31i when the first support portion 30 is swung by the second swing mechanism 120 around the second swing axis A2.

[0067] 3 and 5A, the second convex portion 72 is disposed on the other side Y2 in the second direction Y than the first concave portion 31f. Therefore, it is possible to prevent the second convex portion 72 from contacting the reflecting surface 13 of the optical element 10. As a result, it is possible to easily secure a space for arranging the optical element 10. Also, it is possible to mount a larger optical element 10. Specifically, a part of the reflecting surface 13 protrudes toward one side X1 in the first direction X and one side Y1 in the second direction Y with respect to the lower surface 31e. Therefore, it is possible to prevent the optical element 10 from contacting the part of the first support portion 30 where the second convex portion 72 is disposed. As a result, it is possible to secure a space for arranging the optical element 10.

[0068] 11 and 12, the support 3 has a second support portion 60, a first convex portion 71, and a second convex portion 72. The support 3 preferably has an opposing surface 61a.

[0069] Specifically, the second support portion 60 supports the first support portion 30 so as to be swingable about a second oscillation axis A2 that intersects with the first oscillation axis A1. The second support portion 60 also supports the first support portion 30 in the first direction X. In other words, the second support portion 60 supports the movable body 2 in the first direction X. This makes it possible to suppress changes in the position of the optical element 10 in the first direction X, thereby suppressing changes in the position of the reflected light (light L emitted from the optical element 10) in the first direction X.

[0070] FIG. 13 is a view showing the second support portion 60 of the optical unit 1 according to this embodiment from the other side X2 of the first direction X. As shown in FIGS. 11 to 13, the second support portion 60 has a support main body 61, a pair of side surface portions 62, and a back surface portion 63. The support main body 61 has an opposing surface 61a, a first accommodating recess 61b, and at least two second accommodating recesses 61c. In this embodiment, the support main body 61 has one first accommodating recess 61b and two second accommodating recesses 61c. In this embodiment, an example in which the second support portion 60 has the first accommodating recess 61b and the second accommodating recess 61c will be described, but one of the movable body 2 and the support 3 may have a first accommodating recess and a second accommodating recess recessed in the opposite direction to the other of the movable body 2 and the support 3. In addition, for example, one of the movable body 2 and the support 3 may have a first accommodating recess, and the other of the movable body 2 and the support 3 may have a second accommodating recess.

[0071] The opposing surface 61a faces the lower surface 31e of the first support portion 30 in the first direction X. The first accommodating recess 61b and the second accommodating recess 61c are arranged on the opposing surface 61a. The first accommodating recess 61b and the second accommodating recess 61c are recessed in the opposite direction to the movable body 2 in the first direction X. That is, the first accommodating recess 61b and the second accommodating recess 61c are recessed on one side X1 in the first direction X. The first accommodating recess 61b faces the first recess 31f of the first support portion 30 in the first direction X. The first accommodating recess 61b is arranged on the same circumference C (see FIG. 13) centered on the second oscillation axis A2. The first accommodating recess 61b accommodates a part of the first protrusion 71. Therefore, the first protrusion 71 is arranged on the second oscillation axis A2.

[0072] Also, the second accommodating recess 61c is spaced apart from the first accommodating recess 61b. Therefore, the second accommodating recess 61c is spaced apart from the second oscillation axis A2. Also, in this embodiment, the second accommodating recess 61c is spaced apart from the first accommodating recess 61b at a distance. Also, the second accommodating recess 61c accommodates a part of the second convex portion 72. Therefore, the multiple second convex portions 72 are arranged on the same circumference C centered on the second oscillation axis A2. Therefore, the movable body 2 can be supported at a position that is equally spaced apart from the first convex portion 71. As a result, the movable body 2 can be supported more stably. The axial direction of the second oscillation axis A2 is along the first direction X.

[0073] Moreover, when aligned in the third direction Z, the two second accommodating recesses 61c are disposed at positions farther from the optical element 10 than the first accommodating recesses 61b.

[0074] The first accommodating recess 61b holds a portion of the first convex portion 71. In this embodiment, the lower half of the first convex portion 71 is disposed within the first accommodating recess 61b. The first convex portion 71 has at least a portion of a spherical surface. Therefore, since the first convex portion 71 is in point contact with the other of the movable body 2 and the support body 3, the frictional force between the first convex portion 71 and the other of the movable body 2 and the support body 3 can be reduced. In this embodiment, since the first convex portion 71 is in point contact with the movable body 2, the frictional force between the first convex portion 71 and the movable body 2 can be reduced.

[0075] In addition, in this embodiment, the first convex portion 71 is a sphere. Therefore, the friction between the first convex portion 71 and the first recess 31f is rolling friction. As a result, it is possible to suppress the frictional force between the first convex portion 71 and the first recess 31f from increasing. Specifically, the first convex portion 71 is rotatable within the first accommodating recess 61b. Therefore, the friction between the first convex portion 71 and the first recess 31f is rolling friction. Note that the first convex portion 71 may be fixed to the first recess 31f using, for example, an adhesive.

[0076] The second accommodating recess 61c holds a portion of the second convex portion 72. In this embodiment, the lower half of the second convex portion 72 is disposed within the second accommodating recess 61c. The second convex portion 72 has at least a portion of a spherical surface. Therefore, since the second convex portion 72 is in point contact with the other of the movable body 2 and the support body 3, the frictional force between the second convex portion 72 and the other of the movable body 2 and the support body 3 can be reduced. In this embodiment, since the second convex portion 72 is in point contact with the movable body 2, the frictional force between the second convex portion 72 and the movable body 2 can be reduced.

[0077] In addition, in this embodiment, the second convex portion 72 is a sphere. Therefore, the friction between the second convex portion 72 and the other of the movable body 2 and the support 3 is rolling friction, so that the friction force can be suppressed. In this embodiment, the friction between the second convex portion 72 and the movable body 2 is rolling friction. Specifically, the second convex portion 72 is rotatable in the second accommodating recess 61c. Therefore, the friction between the second convex portion 72 and the second recess 31g of the first support portion 30 is rolling friction. Note that the second convex portion 72 may be fixed to the second recess 31g using, for example, an adhesive.

[0078] 5C and 13, the first accommodating recess 61b may have a central recess 611. The central recess 611 is arranged concentrically with the first accommodating recess 61b. The first convex portion 71 contacts the edge of the central recess 611. The diameter of the central recess 611 is smaller than the diameter of the first convex portion 71. Therefore, for example, even if a gap is generated between the outer peripheral surface of the first convex portion 71 and the inner peripheral surface of the first accommodating recess 61b, the first convex portion 71 can be positioned by the central recess 611. That is, the center of the first convex portion 71 can be arranged on the central axis of the central recess 611. As a result, the center of the first convex portion 71 can be easily arranged on the central axis of the first accommodating recess 61b.

[0079] 5D and 13, the second accommodating recess 61c may have a central recess 611. The central recess 611 is arranged concentrically with the second accommodating recess 61c. The second convex portion 72 contacts the edge of the central recess 611. The diameter of the central recess 611 is smaller than the diameter of the second convex portion 72. Therefore, for example, even if a gap is generated between the outer peripheral surface of the second convex portion 72 and the inner peripheral surface of the second accommodating recess 61c, the second convex portion 72 can be positioned by the central recess 611. That is, the center of the second convex portion 72 can be arranged on the central axis of the central recess 611. As a result, the center of the second convex portion 72 can be easily arranged on the central axis of the second accommodating recess 61c.

[0080] Moreover, the material of the first convex portion 71 and the second convex portion 72 is ceramic. Therefore, it is possible to suppress the wear of the first convex portion 71 and the second convex portion 72. The material of the first convex portion 71 and the second convex portion 72 may be metal. In this case, it is also possible to suppress the wear of the first convex portion 71 and the second convex portion 72. Furthermore, the entire first convex portion 71 and the second convex portion 72 may be made of metal, or only the surfaces of the first convex portion 71 and the second convex portion 72 may be made of metal by, for example, plating processing. Furthermore, the first convex portion 71 and the second convex portion 72 may be made of resin.

[0081] Moreover, the first convex portion 71 is disposed on one side X1 in the first direction X with respect to the reflecting surface 13 (see FIG. 5A) of the optical element 10. Therefore, the first convex portion 71 can be disposed without blocking the optical path.

[0082] As shown in FIG. 5C, FIG. 8, and FIG. 11, the optical unit 1 has a magnet 151 arranged on one of the movable body 2 and the support 3, and a magnetic member 152 arranged on the other of the movable body 2 and the support 3. The magnetic member 152 is a plate-shaped member made of a magnetic material. The magnet 151 and the magnetic member 152 overlap. Specifically, the magnet 151 and the magnetic member 152 overlap when viewed from the direction in which the support 3 supports the movable body 2 (first direction X). Therefore, in the direction in which the support 3 supports the movable body 2, a force of attraction between the magnet 151 and the magnetic member 152 (hereinafter also referred to as an attractive force) can be generated between the magnet 151 and the magnetic member 152.

[0083] In this way, since the magnet 151 and the magnetic member 152 overlap, a force acts between the movable body 2 and the support 3 in a direction in which they approach each other. In other words, an attractive force acts on the movable body 2 and the support 3. Therefore, when the first rocking mechanism 110 and the second rocking mechanism 120 are not driven, the movable body 2 is held at the reference position by the attractive force between the magnet 151 and the magnetic member 152. The reference position is a position where the side surface portion 32 of the first support portion 30 and the side surface portion 62 of the second support portion 60 are parallel to each other, as shown in FIG. 5B. In addition, the attractive force generated between the magnet 151 and the magnetic member 152 can suppress the movable body 2 from moving to the other side X2 in the first direction X.

[0084] 5C, 8, and 11, at least one of the movable body 2 and the support 3 has a covering portion 301 disposed between the magnet 151 and the magnetic member 152. The covering portion 301 covers at least a part of the contour of one of the magnet 151 and the magnetic member 152. Therefore, the covering portion 301 can prevent one of the magnet 151 and the magnetic member 152 from peeling off or becoming displaced. The covering portion 301 may cover, for example, the entire contour of one of the magnet 151 and the magnetic member 152.

[0085] The material of the covering portion 301 is not particularly limited, and may be, for example, a resin or a metal. In this embodiment, the covering portion 301 is formed of, for example, a resin that is a non-magnetic material.

[0086] Moreover, at least a part of one of the magnet 151 and the magnetic member 152 is disposed inside at least one of the movable body 2 and the support body 3. In this embodiment, one of the magnet 151 and the magnetic member 152 is entirely disposed inside at least one of the movable body 2 and the support body 3. Therefore, unlike a case where one of the magnet 151 and the magnetic member 152 is disposed, for example, outside at least one of the movable body 2 and the support body 3, it is possible to prevent at least one of the movable body 2 and the support body 3 from becoming large.

[0087] In this embodiment, the magnet 151 is disposed on the support 3. The magnetic member 152 is disposed on the movable body 2. Moreover, in this embodiment, the movable body 2 has a covering portion 301 disposed between the magnet 151 and the magnetic member 152. The covering portion 301 covers the entire surface of the magnetic member 152 on the magnet 151 side (hereinafter, may be referred to as the lower surface 152a). In this embodiment, the magnetic member 152 is entirely disposed inside the movable body 2.

[0088] At least one of the movable body 2 and the support 3 has a first member having a housing portion 303a in which one of the magnet 151 and the magnetic member 152 is arranged, and a covering portion 301. The first member and the covering portion 301 are a single member. Therefore, the number of parts can be reduced compared to when the first member and the covering portion 301 are formed of separate members. As will be described later, the first member and the covering portion 301 may be different members from each other. In this embodiment, the movable body 2 has a supporting body 31 having a housing portion 303a in which one of the magnet 151 and the magnetic member 152 is arranged. The supporting body 31 is an example of the "first member" of the present invention. In this embodiment, the movable body 2 has a supporting body 31 having a housing portion 303a in which the magnetic member 152 is arranged, and a covering portion 301.

[0089] Moreover, the first member has an opposite surface facing the opposite side of at least the other of the movable body 2 and the support 3. The storage portion 303a is recessed from the opposite surface toward at least the other of the movable body 2 and the support 3. Therefore, the first member and the covering portion 301 can be easily formed from a single member. In this embodiment, the support body 31 has an upper surface 31a facing the opposite side of the support 3. That is, in this embodiment, the support body 31 has an upper surface 31a facing the other side X2 of the first direction X at a position opposite to the lower surface 31e in the first direction X. The lower surface 31e faces the other side X2 of the first direction X with respect to the opposing surface 61a of the support 3. The storage portion 303a is recessed from the upper surface 31a toward the support 3. The upper surface 31a is an example of the "opposite surface" of the present invention.

[0090] The magnetic member 152 is fitted in the housing portion 303a. Therefore, the magnetic member 152 is fixed to the housing portion 303a. For example, the magnetic member 152 is fixed to the housing portion 303a by adhesive or press-fitting.

[0091] There may be a plurality of magnets 151 and a plurality of magnetic members 152. In other words, the optical unit 1 may have a plurality of magnets 151 and a plurality of magnetic members 152. In this embodiment, the optical unit 1 has two magnets 151 and two magnetic members 152.

[0092] In this embodiment, the magnet 151 and the magnetic member 152 are each disposed symmetrically about the second oscillation axis A2 in a third direction Z that intersects with the first direction X and the second direction Y. Therefore, attractive forces act symmetrically about the second oscillation axis A2, so that the oscillation of the movable body 2 is stabilized.

[0093] The other of the magnet 151 and the magnetic member 152 is disposed inside the other of the movable body 2 and the support 3. In this embodiment, the magnet 151 is disposed inside the support 3. Specifically, the support 3 has a third accommodating recess 61d. The support 3 has a plurality of third accommodating recesses 61d. In this embodiment, the support 3 has two third accommodating recesses 61d.

[0094] The third accommodating recess 61d is disposed on the opposing surface 61a of the support body 61. The third accommodating recess 61d is recessed in the opposite direction to the movable body 2 in the first direction X. That is, the third accommodating recess 61d is recessed on one side X1 in the first direction X. The third accommodating recess 61d faces the magnetic member 152 in the first direction X. That is, the third accommodating recess 61d and the magnetic member 152 overlap with each other when viewed from the first direction X.

[0095] The magnet 151 is fitted in the third accommodating recess 61d. Therefore, the magnet 151 is fixed to the third accommodating recess 61d. For example, the magnet 151 is fixed to the third accommodating recess 61d by adhesive or press-fitting.

[0096] In this embodiment, the magnet 151 is fixed to the third accommodating recess 61d by an adhesive. Specifically, as shown in FIG. 5C and FIG. 13, the third accommodating recess 61d has an adhesive recess 613. The adhesive recess 613 is disposed in the center of the third accommodating recess 61d. When the magnet 151 is fixed to the third accommodating recess 61d, an adhesive (not shown) is disposed in the third accommodating recess 61d, and then the magnet 151 is disposed inside the third accommodating recess 61d. As a result, the magnet 151 is fixed to the third accommodating recess 61d by the adhesive (not shown).

[0097] Furthermore, in this embodiment, the magnet 151 and a second magnet 121 of the second oscillating mechanism 120, which will be described later, are separate members. Therefore, unlike the case where the magnet 151 constitutes the second oscillating mechanism 120, the magnet 151 can be a dedicated magnet that generates an attractive force between itself and the magnetic member 152, and therefore the magnet 151 can be disposed in a position close to the magnetic member 152. Therefore, even if the magnet 151 and the magnetic member 152 are made small, a sufficient attractive force can be generated between the magnet 151 and the magnetic member 152.

[0098] 12 and 13, in the second support portion 60, a pair of side surface portions 62 are arranged at both ends of the support main body 61 in the third direction Z. The pair of side surface portions 62 have shapes symmetrical to each other in the third direction Z. The side surface portion 62 has an accommodating hole 62a in which the second coil 125 of the second rocking mechanism 120 is arranged. The accommodating hole 62a penetrates the side surface portion 62 in the thickness direction. In other words, the accommodating hole 62a penetrates the side surface portion 62 in the third direction Z.

[0099] The rear surface portion 63 is disposed at an end portion on the other side Y2 in the second direction Y of the support body 61. The rear surface portion 63 has an accommodating hole 63a in which the first coil 115 of the first rocking mechanism 110 is disposed. The accommodating hole 63a penetrates the rear surface portion 63 in the thickness direction. In other words, the accommodating hole 63a penetrates the rear surface portion 63 in the second direction Y.

[0100] The FPC (Flexible Printed Circuit) 80 is disposed so as to cover the outside of the pair of side surface portions 62 and the outside of the rear surface portion 63. The FPC 80 has, for example, a semiconductor element, a connection terminal, and wiring. The FPC 80 supplies power to the first coil 115 of the first oscillating mechanism 110 and the second coil 125 of the second oscillating mechanism 120 at a predetermined timing.

[0101] 11, the FPC 80 has a substrate 81, a connection terminal 82, a reinforcing plate 83, and a magnetic member 84. The substrate 81 is made of, for example, a polyimide substrate. The substrate 81 is flexible. The substrate 81 has a plurality of pin insertion holes 81a. The pin insertion holes 81a face the first coil 115. A coil pin (not shown) of the first coil 115 is disposed in each pin insertion hole 81a.

[0102] The connection terminal 82 is disposed on the substrate 81. The connection terminal 82 faces the first rocking mechanism 110 and the second rocking mechanism 120. The connection terminal 82 is electrically connected to a terminal of a Hall element (not shown). For example, four connection terminals 82 are disposed for one Hall element. Three reinforcing plates 83 are disposed on the substrate 81. The reinforcing plates 83 face the first rocking mechanism 110 and the second rocking mechanism 120. The reinforcing plates 83 suppress bending of the substrate 81.

[0103] Three magnetic members 84 are arranged on the substrate 81. Two of the magnetic members 84 face the second magnet 121 of the second oscillating mechanism 120. When the second coil 125 is not energized, an attractive force is generated between the second magnet 121 and the magnetic member 84. Therefore, the movable body 2 is arranged at a reference position in the rotation direction about the second oscillating axis A2. The remaining magnetic member 84 faces the first magnet 111 of the first oscillating mechanism 110. When the first coil 115 is not energized, an attractive force is generated between the first magnet 111 and the magnetic member 84. Therefore, the movable body 2 is arranged at a reference position in the rotation direction about the first oscillating axis A1. Furthermore, the attractive force generated between the first magnet 111 and the magnetic member 84 can prevent the holder 20 from slipping out to one side Y1 in the second direction Y.

[0104] As shown in Figures 5A and 5B, the optical unit 1 further has a first rocking mechanism 110. The first rocking mechanism 110 rocks the holder 20 relative to the first support part 30 about the first rocking axis A1. Therefore, the optical element 10 can be easily rocked about each of the two rocking axes (the first rocking axis A1 and the second rocking axis A2). The first rocking mechanism 110 has a first magnet 111 and a first coil 115. The first coil 115 faces the first magnet 111 in the second direction Y.

[0105] The first magnet 111 is disposed on one of the holder 20 and the second support part 60. On the other hand, the first coil 115 is disposed on the other of the holder 20 and the second support part 60. Therefore, a force acts on the first magnet 111 due to a magnetic field generated when a current flows through the first coil 115. Then, the holder 20 swings relative to the first support part 30. Therefore, the holder 20 can be swung with a simple configuration using the first magnet 111 and the first coil 115. In this embodiment, the first magnet 111 is disposed on the holder 20. The first coil 115 is disposed on the second support part 60. By disposing the first coil 115 on the second support part 60, the first coil 115 does not swing relative to the second support part 60. Therefore, wiring can be easily performed on the first coil 115 compared to a case where the first coil 115 is disposed on, for example, the first support part 30.

[0106] Specifically, the first magnet 111 is disposed on the back surface 21b of the holder 20. That is, the first magnet 111 is disposed on the end portion 20a of the holder 20 on the other side Y2 in the second direction Y. The first magnet 111 has an n-pole portion 111a consisting of an n-pole and an s-pole portion 111b consisting of an s-pole. The first magnet 111 is polarized in the first direction X.

[0107] The first coil 115 is disposed in the accommodation hole 63a of the back surface portion 63 of the second support portion 60. That is, the first coil 115 is disposed at the end portion 60a of the second support portion 60 on the other side Y2 in the second direction Y. This makes it possible to prevent the first coil 115 and the first magnet 111 from being disposed on the optical path. This makes it possible to prevent the optical path from being blocked by the first coil 115 and the first magnet 111.

[0108] By passing a current through the first coil 115, a magnetic field is generated around the first coil 115. Then, a force caused by the magnetic field acts on the first magnet 111. As a result, the holder 20 and the optical element 10 swing relative to the first support part 30 and the second support part 60 around the first swing axis A1.

[0109] The second oscillating mechanism 120 oscillates the movable body 2 about the second oscillating axis A2. Specifically, the second oscillating mechanism 120 oscillates the first support part 30 relative to the second support part 60 about the second oscillating axis A2. The second oscillating mechanism 120 has a second magnet 121 and a second coil 125 facing the second magnet 121. The second magnet 121 is an example of the "oscillating magnet" of the present invention. The second coil 125 is an example of the "oscillating coil" of the present invention. The second magnet 121 is disposed on the movable body 2 or the support 3. The second coil 125 is disposed on the support 3 or the movable body 2. In this embodiment, the second magnet 121 is disposed on one of the first support part 30 and the second support part 60. On the other hand, the second coil 125 is disposed on the other of the first support part 30 and the second support part 60. Therefore, the first support part 30 swings relative to the second support part 60 due to a magnetic field generated when a current is passed through the second coil 125. Therefore, the first support part 30 can swing with a simple configuration using the second magnet 121 and the second coil 125. In this embodiment, the second magnet 121 is disposed on the first support part 30. The second coil 125 is disposed on the second support part 60. By disposing the second coil 125 on the second support part 60, the second coil 125 does not swing relative to the second support part 60. Therefore, wiring to the second coil 125 can be easily performed compared to a case where the second coil 125 is disposed on, for example, the first support part 30.

[0110] Specifically, the second magnet 121 is disposed in the housing recess 32f (see FIG. 8) of the side surface portion 32 of the first support portion 30. That is, the second magnet 121 is disposed at the end portion 30a of the first support portion 30 in a direction intersecting with the first direction X. In this embodiment, the second magnet 121 is disposed at the end portion 30a in the third direction Z. The second magnet 121 has an n-pole portion 121a consisting of an n-pole and an s-pole portion 121b consisting of an s-pole. The second magnet 121 is polarized in a second direction Y intersecting with the first direction X. Therefore, the movable body 2 can be swung around the second oscillation axis A2 along the incident direction of light.

[0111] The second coil 125 faces the second magnet 121 in the third direction Z. The second coil 125 is disposed in the accommodation hole 62a (see FIG. 12) of the side surface portion 62 of the second support part 60. That is, the second coil 125 is disposed at the end portion 60b of the second support part 60 in the third direction Z.

[0112] By passing a current through the second coil 125, a magnetic field is generated around the second coil 125. Then, a force caused by the magnetic field acts on the second magnet 121. As a result, the first support part 30, the holder 20, and the optical element 10 swing relative to the second support part 60 around the second swing axis A2.

[0113] 1, when the optical unit 1 is used in the smartphone 200, a Hall element (not shown) in the smartphone 200 detects the attitude of the smartphone 200. The first rocking mechanism 110 and the second rocking mechanism 120 are controlled according to the attitude of the smartphone 200. It is preferable that the optical unit 1 is capable of detecting the attitude of the holder 20 with respect to the second support portion 60. In this case, the attitude of the holder 20 with respect to the second support portion 60 can be controlled with high accuracy. A gyro sensor, for example, may be used as the sensor that detects the attitude of the smartphone 200.

[0114] Hereinafter, first to fourth modified examples of this embodiment will be described with reference to Figures 14 to 18. Below, differences from this embodiment shown in Figures 1 to 13 will be mainly described.

[0115] (First Modification) A first modified example of the embodiment of the present invention will be described with reference to Fig. 14 and Fig. 15. Fig. 14 is a cross-sectional view showing the structure of an optical unit 1 according to a first modified example of the present embodiment. In the first modified example, unlike the embodiment shown in Figs. 1 to 13, an example will be described in which the first support part 30 is molded using a magnetic member 152 as an insert part.

[0116] 14, one of the magnet 151 and the magnetic member 152 is substantially entirely covered by at least one of the movable body 2 and the support body 3. In other words, substantially the entire surface of one of the magnet 151 and the magnetic member 152 is covered by at least one of the movable body 2 and the support body 3. In addition, at least one of the movable body 2 and the support body 3 is formed by insert molding one of the magnet 151 and the magnetic member 152 as an insert part. Therefore, it is possible to further prevent the magnet 151 and the magnetic member 152 from peeling off or becoming displaced.

[0117] In the first modified example, the magnetic member 152 is substantially entirely covered by the first support portion 30. In other words, substantially the entire surface of the magnetic member 152 is covered by the first support portion 30. At least one of the movable body 2 and the support body 3 is formed by insert molding the magnetic member 152 as an insert part. In the first modified example, the first support portion 30 is formed by insert molding the magnetic member 152 as an insert part. That is, the magnetic member 152 is disposed in the housing portion 303a of the first part (here, the first support portion 30). Therefore, unlike the case where the magnet 151 is insert molded as an insert part, it is possible to suppress demagnetization of the magnet 151 due to heat generated during insertion.

[0118] Next, insert molding will be briefly described with reference to Fig. 15. Fig. 15 is a schematic cross-sectional view for explaining a manufacturing method of the first support part 30 of the optical unit 1 according to a first modified example of this embodiment.

[0119] 15, the manufacturing method of the optical unit 1 includes a step of arranging the magnet 151 or the magnetic member 152 in a mold 1000, a step of molding at least one of the movable body 2 and the support 3 by injecting resin into the mold 1000, and a step of supporting the movable body 2 by the support 3. By the step of molding at least one of the movable body 2 and the support 3, at least one of the movable body 2 and the support 3 has a covering portion 301 that covers at least a part of the contours (edges) of the magnet 151 and the magnetic member 152.

[0120] The first modified example includes a step of arranging the magnetic member 152 in a mold 1000, a step of molding the support 3 by injecting resin into the mold 1000, and a step of supporting the movable body 2 by the support 3. In the first modified example, the step of molding the support 3 includes a step of molding the first support part 30.

[0121] Specifically, the mold 1000 has a first mold 1001 which is a lower mold, a second mold 1002 which is placed on the first mold 1001, and a third mold 1003 which is placed on the second mold 1002.

[0122] When molding the first support part 30, first, the magnetic member 152 is placed at a predetermined position on a first mold 1001. The first mold 1001 has protrusions and the like for supporting the magnetic member 152, but these are omitted in FIG. 15. Then, a second mold 1002 is placed on the first mold 1001. After that, a third mold 1003 is placed on the second mold 1002. As a result, as shown in FIG. 15, a space S1000 having approximately the same shape as the first support part 30 is formed by the mold 1000. The magnetic member 152 is placed in the space S1000.

[0123] Next, resin is injected into the space S1000 to perform insert molding with the magnetic member 152 as an insert part. In this way, the first support section 30 integrated with the magnetic member 152 is manufactured.

[0124] Thereafter, the movable body 2 is assembled by attaching the holder 20, the preload portion 40, the second magnet 121, etc. to the first support portion 30. Then, by disposing the movable body 2 inside the support body 3, the covering portion 301 is disposed between the magnet 151 and the magnetic member 152. In other words, in the process of supporting the movable body 2 by the support body 3, the covering portion 301 is disposed between the magnet 151 and the magnetic member 152.

[0125] The other structures and effects of the first modified example are similar to those of the embodiment shown in FIGS.

[0126] (Second Modification) A second modified example of the embodiment of the present invention will be described with reference to Fig. 16. Fig. 16 is a cross-sectional view showing the structure of an optical unit 1 according to a second modified example of the present embodiment. In the second modified example, unlike the embodiment shown in Figs. 1 to 13, an example will be described in which the housing portion 303a is arranged on at least the surfaces of the movable body 2 and the support body 3 facing the other side.

[0127] 16, the first member has an opposing surface facing at least the other side of the movable body 2 and the support 3. The accommodating portion 303a is recessed from the opposing surface toward the side opposite to at least the other of the movable body 2 and the support 3. In the second modified example, the first support portion 30, which is the first member, has a lower surface 31e facing the support 3. The accommodating portion 303a is recessed from the lower surface 31e toward the side opposite to the support 3 (the other side X2 in the first direction X).

[0128] In the second modified example, the first member and the covering portion 301 are different members. Therefore, the material of the covering portion 301 can be made different from that of the first member, and the thickness of the covering portion 301 can be changed. In other words, the design freedom of the first member and the covering portion 301 can be improved. In the second modified example, the first support portion 30, which is the first member, and the covering portion 301 are different members. Specifically, the housing portion 303a houses the magnetic member 152 and the covering portion 301. The covering portion 301 is, for example, a plate-shaped member having an area larger than the lower surface 152a of the magnetic member 152. The covering portion 301 covers, for example, substantially the entire area of ​​the lower surface 152a of the magnetic member 152. The covering portion 301 may be fixed to the first support portion 30 using a fastener such as a screw.

[0129] The other structures and effects of the second modified example are similar to those of the embodiment shown in FIGS.

[0130] (Third Modification) A third modified example of the embodiment of the present invention will be described with reference to Fig. 17. Fig. 17 is a cross-sectional view showing the structure of an optical unit 1 according to a third modified example of the present embodiment. In the third modified example, unlike the second modified example shown in Fig. 16, an example will be described in which the covering portion 301 is formed of a coating agent.

[0131] As shown in FIG. 17, the first support portion 30, which is the first member, and the covering portion 301 are different members. Specifically, the covering portion 301 is made of, for example, a coating agent. The covering portion 301 covers, for example, the entire contour (edge) of the lower surface 152a of the magnetic member 152. The covering portion 301 may cover, for example, the entire lower surface 152a of the magnetic member 152. Note that, although the accommodating portion 303a is shown in FIG. 17 to have a different shape from that shown in FIG. 16, the accommodating portion 303a may have the same shape as that shown in FIG. 16.

[0132] The other structures and effects of the third modified example are similar to those of the second modified example.

[0133] (Fourth Modification) A fourth modified example of the embodiment of the present invention will be described with reference to Fig. 18. Fig. 18 is a cross-sectional view showing the structure of an optical unit 1 according to the fourth modified example of the present embodiment. In the fourth modified example, unlike the embodiment shown in Figs. 1 to 13, an example in which a covering portion 615 is disposed on a support 3 will be described.

[0134] As shown in FIG. 18, in the fourth modified example, the support 3 has a support body 61 having a housing portion 612 in which one of the magnet 151 and the magnetic member 152 is disposed. The support body 61 is an example of the "first member" of the present invention. In the fourth modified example, the support 3 has a support body 61 having a housing portion 612 in which the magnet 151 is disposed, and a covering portion 615. The support body 61 also has an opposite surface (hereinafter, may be referred to as a lower surface 616) facing the opposite side to the movable body 2. That is, in the fourth modified example, the support body 61 has a lower surface 616 facing one side X1 of the first direction X at a position opposite to the opposing surface 61a in the first direction X. The housing portion 612 is disposed on the lower surface 616.

[0135] The magnet 151 is fitted in the housing portion 612. Therefore, the magnet 151 is fixed to the housing portion 612. For example, the magnet 151 is fixed to the housing portion 612 by adhesive or press-fitting.

[0136] For example, the storage section 612 may have a structure obtained by inverting the storage section 303a shown in Fig. 5C in the first direction X. Also, the storage section 612 may have a structure obtained by inverting the storage section 303a of the first to third modified examples in the first direction X.

[0137] The housing portion 303a of the movable body 2 may have, for example, a structure similar to that shown in Fig. 5C. The housing portion 303a may have a structure similar to that of the first to third modified examples. The housing portion 303a may have a structure shown in Fig. 18. In this case, for example, the magnetic member 152 may be fixed to the housing portion 303a by adhesive or press-fitting.

[0138] The other structures and effects of the fourth modified example are similar to those of the embodiment shown in FIGS.

[0139] The above describes the embodiments of the present invention (including modified examples) with reference to the drawings. However, the present invention is not limited to the above embodiments, and can be implemented in various aspects without departing from the gist of the present invention. In addition, various inventions can be formed by appropriately combining multiple components disclosed in the above embodiments. For example, some components may be deleted from all components shown in the embodiments. For example, components across different embodiments may be appropriately combined. The drawings are mainly schematic illustrations of each component for ease of understanding, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of drawing. In addition, the material, shape, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited, and various modifications are possible within a range that does not substantially deviate from the effects of the present invention.

[0140] For example, in the above embodiment, an example has been shown in which the magnetic member 152 is disposed on the movable body 2 and the magnet 151 is disposed on the support 3, but the present invention is not limited to this. For example, the magnetic member 152 may be disposed on the support 3 and the magnet 151 may be disposed on the movable body 2.

[0141] In the above embodiment, the magnetic member 152 is entirely disposed inside the housing portion 303a, but the present invention is not limited to this. A part of the magnetic member 152 may be disposed inside the housing portion 303a.

[0142] In the above embodiment, the magnet 151 and the magnetic member 152 are arranged so as to overlap when viewed from the direction in which the support body 3 supports the movable body 2, but the present invention is not limited to this. The magnet 151 and the magnetic member 152 may be arranged so as to overlap when viewed from a direction intersecting the direction in which the support body 3 supports the movable body 2.

[0143] In the above embodiment, an example has been shown in which the support 3 supports the movable body 2 in a direction (first direction X) along the direction in which the light L enters the optical element 10, but the present invention is not limited to this. For example, the support 3 may support the movable body 2 in a direction (second direction Y) along the direction in which the light L exits the optical element 10. In addition, the support 3 may support the movable body 2 in a direction (third direction Z) intersecting the direction in which the light L enters the optical element 10 and the direction in which it exits from the optical element 10.

[0144] In addition, for example, in the above-described embodiment, an example has been shown in which the covering portion 301 covers the entire contour of the magnetic member 152, but the present invention is not limited to this. For example, the covering portion 301 may cover a part of the contour of the magnetic member 152. In this case, for example, a plurality of covering portions 301 that cover the contour of the magnetic member 152 at equal intervals may be disposed.

[0145] In the above embodiment, the magnetic member 152 is made of a magnetic material, but the present invention is not limited to this. For example, the magnetic member 152 may be a magnet. [Industrial Applicability]

[0146] The present invention can be used, for example, in an optical unit and a method for manufacturing an optical unit. [Explanation of symbols]

[0147] 1: Optical unit 2: Movable body 3:Support 10:Optical element 31: Support body (first member) 31a: Top (opposite side) 61: Support body (first member) 120: Second rocking mechanism (rocking mechanism) 121: Second magnet (oscillating magnet) 125: Second coil (oscillating coil) 151: Magnet 152: Magnetic materials 301: Covering part 303a: Storage unit 612: Storage unit 615: Covering part 616: Bottom (opposite side) 1000: Mold A2: Second swing axis (swing axis) L: light X: 1st direction X1: One side Y: Second direction Y1: One side Z: 3rd direction

Claims

1. A movable body having an optical element that changes the traveling direction of light; A support body supporting the movable body so as to be swingable about a swing axis; a swing mechanism that swings the movable body about the swing axis; A magnet disposed on one of the movable body and the support; a magnetic member disposed on the other of the movable body and the support; having The magnet and the magnetic member overlap each other, At least one of the movable body and the support body has a covering portion disposed between the magnet and the magnetic member, The covering portion covers at least a portion of the outline of one of the magnet and the magnetic member.

2. At least one of the movable body and the support body includes a first member having a housing portion in which one of the magnet and the magnetic member is disposed, and the covering portion; The optical unit according to claim 1 , wherein the first member and the covering portion are a single member.

3. The first member has an opposite surface facing an opposite side to at least the other of the movable body and the support body, The optical unit according to claim 2 , wherein the housing portion is recessed from the opposite surface toward at least the other of the movable body and the support body.

4. At least one of the movable body and the support body includes a first member having a housing portion in which one of the magnet and the magnetic member is disposed, and the covering portion; The optical unit according to claim 1 , wherein the first member and the covering portion are different members from each other.

5. The optical unit according to claim 1 , wherein one of the magnet and the magnetic member is entirely disposed inside at least one of the movable body and the support body.

6. At least one of the movable body and the support body includes a first member having a housing portion in which one of the magnet and the magnetic member is disposed, and the covering portion; The optical unit according to claim 5 , wherein the magnetic member is disposed in the housing portion.

7. 7. The optical unit according to claim 1, wherein the magnet and the magnetic member overlap when viewed from a direction in which the support body supports the movable body.

8. The optical element reflects light traveling in one direction of a first direction to one side of a second direction intersecting the first direction, The optical unit according to claim 1 , wherein the support supports the movable body in the first direction.

9. A plurality of the magnets and a plurality of the magnetic members are provided, 9. The optical unit according to claim 8, wherein the magnet and the magnetic member are disposed symmetrically about the oscillation axis in a third direction intersecting the first direction and the second direction.

10. The rocking mechanism includes: A swinging magnet disposed on the movable body or the support; an oscillation coil disposed on the support or the movable body; The optical unit according to claim 1 , further comprising:

11. A method for manufacturing an optical unit including a movable body having an optical element that changes a traveling direction of light, a support that supports the movable body so as to be swingable about a swing axis, a swing mechanism that swings the movable body about the swing axis, a magnet disposed on one of the movable body and the support, and a magnetic member disposed on the other of the movable body and the support, comprising: The magnet and the magnetic member overlap each other, The method for manufacturing the optical unit includes the steps of: placing the magnet or the magnetic member in a mold; a step of injecting a resin into the mold to mold at least one of the movable body and the support body; supporting the movable body by the support body; having By the molding step, at least one of the movable body and the support body has a covering portion that covers at least a part of the outline of the magnet and the magnetic member, A method for manufacturing an optical unit, wherein in the supporting step, the covering portion is disposed between the magnet and the magnetic member.

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