Actuator and optical unit

Abstract

The invention provides an actuator and an optical unit. The actuator capable of connecting a lens unit and a sensor unit is miniaturized. In a structure in which a support section (134) for supporting a leg section (132) of a gimbal mechanism (130) is formed on a fixed body (110) and a movable body (120), a flexible substrate (143) for connecting coils (142) constituting a drive mechanism (140) is disposed so as to avoid the position of the support section (134) provided on the movable body (120) as much as possible. By adopting the structure, the position of the supporting part (134) arranged on the movable body (120) does not need to be reinforced, and the size of the actuator (10) can be reduced.

Description

Technical Field

[0001] The invention relates to an actuator and an optical unit. Background Art

[0002] In the past, various optical units have been used. Among them, an optical unit including a lens unit, a sensor unit, and an actuator capable of connecting the lens unit and the sensor unit has been used. For example, Patent Document 1 discloses an optical unit including: a movable body having an imaging module provided with a lens and an imaging element; and a fixed body that holds the movable body in a state where it can rotate with a direction intersecting the optical axis direction as a rotation axis. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2017-21332 Summary of the invention

[0004] Problems to be solved by the invention Most existing optical units that include a lens unit, a sensor unit, and an actuator that can connect the lens unit and the sensor unit include a gimbal mechanism and a drive mechanism, and the drive mechanism includes a magnet, a coil, and a flexible substrate that connects the coils to each other. Among them, in a structure in which a support portion that supports the leg of the gimbal mechanism is formed on a fixed body and a movable body, when a flexible substrate is arranged near the position of the support portion formed on the movable body, the position of the support portion formed on the movable body becomes a structure that is equivalent to the vicinity of the end portion when the movable body rotates and moves relative to the fixed body, and therefore, the flexible substrate and the movable body are likely to interfere with each other. Therefore, if the distance between the vicinity of the support portion of the movable body and the flexible substrate is increased in order to suppress the interference between the flexible substrate and the movable body, the area of ​​the fixed body where the flexible substrate is arranged becomes thinner and the rigidity is likely to decrease. Therefore, if a reinforcement portion is formed near the position of the area where the flexible substrate is arranged in the fixed body in order to increase the rigidity of the area where the flexible substrate is arranged, the actuator is likely to be large-sized, and thus the optical unit is likely to be large-sized. Means for solving problems

[0005] The actuator of the present invention is an actuator capable of connecting a lens unit and a sensor unit, and comprises: a movable body, which connects the lens unit and the sensor unit, and has a first surface and a second surface parallel to the optical axis direction and opposite to each other, and a third surface and a fourth surface parallel to the optical axis direction, orthogonal to the first surface and the second surface and opposite to each other; a fixed body, which holds the movable body in a state where it can rotate with at least one direction of the intersecting directions intersecting the optical axis direction as a rotation axis; a gimbal mechanism, which has a rotating component and a supporting part, the rotating component having a frame-shaped top plate passing through the movable body and a plurality of legs extending from the top plate in the optical axis direction, the supporting part engaging with the legs and supporting the legs in a state where they can rotate; and a driving mechanism, which has a magnet, a coil and a flexible substrate connecting the coils to each other, and generates a driving force that rotates the movable body relative to the fixed body, the driving mechanism having: a first magnet as the magnet, arranged on the first surface, a second magnet arranged on the second surface, a a third magnet disposed on the third surface and a fourth magnet disposed on the fourth surface; a first coil disposed on the surface of the fixed body opposite to the first magnet, a second coil disposed on the surface of the fixed body opposite to the second magnet, a third coil disposed on the surface of the fixed body opposite to the third magnet, and a fourth coil disposed on the surface of the fixed body opposite to the fourth magnet as the coils; and a first flexible substrate connecting the first coil and the third coil, a second flexible substrate connecting the third coil and the second coil, and a third flexible substrate connecting the second coil and the fourth coil as the flexible substrate. In the gimbal mechanism, the support parts are provided at two locations of the fixed body on an extension line of a first straight line extending from a position between the first surface and the third surface to a position between the second surface and the fourth surface when viewed from the optical axis direction, and at two locations of the movable body on an extension line of a second straight line extending from a position between the first surface and the fourth surface to a position between the second surface and the third surface when viewed from the optical axis direction. Effects of the Invention

[0006] According to the present invention, it is possible to miniaturize an actuator capable of connecting a lens unit and a sensor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a perspective view of an optical unit according to an embodiment of the present invention. Figure 2 Yes means Figure 1 An exploded perspective view of a lens unit, a sensor unit, and an actuator of an optical unit. Figure 3 Yes means Figure 1 Front view of the actuator of the optical unit. Figure 4Yes means Figure 1 A front view of the movable body of the actuator of the optical unit. Figure 5 Yes means Figure 1 Front view of the fixed body of the actuator of the optical unit. Figure 6 Yes means Figure 1 A perspective view of the movable body and gimbal mechanism of the actuator of the optical unit. Figure 7 is along Figure 3 The cross-sectional view taken along line AA shows Figure 1 The movable body and gimbal mechanism of the actuator of the optical unit. Figure 8 is along Figure 3 The cross-sectional view taken along line BB shows Figure 1 A fixed body, a movable body and a gimbal mechanism of an actuator of an optical unit. Fig. 9 Yes means Figure 1 A sectional view of an actuator of an optical unit as viewed from the front. Fig.10 Yes means Figure 1 A perspective view of the actuator coil and flexible substrate of the optical unit. Fig.11 Yes means Figure 1 Side view of the actuator of the optical unit. DETAILED DESCRIPTION

[0008] Below, use Figures 1 to 11 An optical unit 1 according to an embodiment of the present invention is described. In each figure, the Z-axis direction is the optical axis direction in which the optical axis AX extends, the X-axis direction is the direction intersecting the optical axis AX, in other words, the yaw axis direction, and the Y-axis direction is the direction intersecting the optical axis AX, in other words, the pitch axis direction. In addition, the direction pointed by the arrow in the Z-axis direction, i.e., the +Z direction, is the direction on the subject side, and the direction opposite to the direction pointed by the arrow, i.e., the -Z direction, is the direction on the subject side on the side opposite to the subject side.

[0009] <Overall Structure of Optical Unit> First, the overall structure of the optical unit 1 of this embodiment will be described. Figure 1 As shown, it has a housing 2. Figure 1 As shown, a lens unit 3 having a lens 3 a is arranged on the housing 2 .

[0010] In addition, on the housing 2, in addition to the lens unit 3, Figure 2 As shown, an actuator 10 and a sensor unit 4 are also provided. Figure 1As shown, a hole 2a is provided on the housing 2, and the lens unit 3 is arranged on the housing 2 in such a way that the lens 3a can be seen from the hole 2a when viewed from the optical axis direction. The actuator 10 connects the lens unit 3 and the sensor unit 4, and is configured to displace the lens unit 3 in the housing 2.

[0011] <Lens unit> The lens unit 3 of this embodiment is connected to the actuator 10, and in the state of being connected to the actuator 10, is also connected to the sensor unit 4. Figure 2 As shown, the lens unit 3 of this embodiment has: a lens setting portion 31 where the lens 3a is set; and a first connection portion 32 having a smaller diameter than the lens setting portion 31. The first connection portion 32 is connected to the actuator 10 and is also connected to the sensor unit 4.

[0012] <Sensor Unit> The sensor unit 4 of this embodiment includes: a large diameter portion 41 having an imaging element 41a; and a second connection portion 42 connected to the first connection portion 32. Here, the first connection portion 32 is cylindrical, and the second connection portion 42 is also cylindrical. And, in a state where the first connection portion 32 is connected to the actuator 10, the outer peripheral portion of the first connection portion 32 is embedded in the inner peripheral portion of the second connection portion 42, so that the first connection portion 32 and the second connection portion 42 are connected. The imaging element 41a is connected to the flexible substrate 41b.

[0013] <Actuator> like Figure 2 As shown in FIG. 1 and FIG. 2 , the actuator 10 of the present embodiment includes: a fixed body 110 fixed to the housing 2; and a movable body 120 connected to the lens unit 3 and the sensor unit 4 and capable of displacement relative to the fixed body 110. Figures 6 to 8 As shown in FIGS. 1 and 10 , the actuator 10 of the present embodiment includes a gimbal mechanism 130 connected to a fixed body 110 and a movable body 120 .

[0014] The fixed body 110 holds the movable body 120 in a state where it can rotate with at least one of the directions intersecting the optical axis direction, such as the X-axis direction and the Y-axis direction, as the rotation axis through the gimbal mechanism 130. Fig. 9 As shown in FIG. 1 and FIG. 2 , the actuator 10 of the present embodiment includes a magnet 141, a coil 142, and a flexible substrate 143, and includes a drive mechanism 140 that generates a driving force for rotating the movable body 120 relative to the fixed body 110. In addition, as the flexible substrate 143, there are a flexible substrate 143A, a flexible substrate 143B, and a flexible substrate 143C that connect the coils 142 to each other, or ... Figure 2 Flexible substrate 143D etc. connected to terminal 144 as shown.

[0015] <Movable body> like Figure 3 , Figure 4 , Figure 6 and Fig. 9 As shown, the movable body 120 has: a first surface 121 and a second surface 122 which are parallel to the optical axis direction (Z-axis direction) and are opposite to each other; and a third surface 123 and a fourth surface 124 which are parallel to the optical axis direction, orthogonal to the first surface 121 and the second surface 122 and are opposite to each other. In addition, a magnet 141A as the magnet 141 is provided on the first surface 121, a magnet 141C as the magnet 141 is provided on the second surface 122, a magnet 141B as the magnet 141 is provided on the third surface 123, and a magnet 141D as the magnet 141 is provided on the fourth surface 124.

[0016] In addition, if Figure 7 and Figure 8 As shown, the movable body 120 has: a first insertion port 125, which can insert the first connection part 32 from a first direction in the optical axis direction (a direction from the +Z direction side toward the -Z direction side); and a second insertion port 126, which can insert the second connection part 42 from a second direction opposite to the first direction (a direction from the -Z direction side toward the +Z direction side). By displacing the movable body 120 to which the lens unit 3 and the sensor unit 4 are connected relative to the fixed body 110, the lens unit 3 and the sensor unit 4 are also displaced relative to the fixed body 110.

[0017] <Fixed body> like Figure 3 , Figure 5 and Fig. 9 As shown, the fixed body 110 has: a first opposite surface 111 facing the first surface 121; a second opposite surface 112 facing the second surface 122; a third opposite surface 113 facing the third surface 123; and a fourth opposite surface 114 facing the fourth surface 124. Figure 3 , Figure 8 and Fig. 9 As shown in FIG. 1 , the movable body 120 is disposed in a region surrounded by the first opposing surface 111, the second opposing surface 112, the third opposing surface 113, and the fourth opposing surface 114 of the fixed body 110. Fig. 9 As shown, a coil 142A is provided as the coil 142 on the first relative surface 111, a coil 142C is provided as the coil 142 on the second relative surface 112, a coil 142B is provided as the coil 142 on the third relative surface 113, and a coil 142D is provided as the coil 142 on the fourth relative surface 114.

[0018] In addition, if Figure 8As shown, the fixed body 110 is provided with a flexible substrate arrangement groove 115 which is recessed inwardly when viewed from the optical axis direction and is used to arrange the flexible substrate 143 along. By providing the flexible substrate arrangement groove 115, it is possible to suppress the situation where the flexible substrate 143 moves when the movable body 120 is displaced relative to the fixed body 110 and the flexible substrate 143 interferes with the movable body 120, etc.

[0019] <Gimbal Mechanism> like Figures 6 to 9 As shown, the gimbal mechanism 130 includes: a rotating member 136 having a frame-shaped top plate 131 passing through the movable body 120 and four legs 132 extending from the top plate 131 in the optical axis direction; and a support portion 134, which engages with the legs 132 and supports the legs 132 in a rotatable state. Here, the rotating member 136 as the legs 132 includes: Figure 6 and Figure 7 As shown in FIG. 1 , the first leg portions 132A and 132B protrude inwardly from the top plate 131 and extend along the optical axis direction; and Figure 6 and Figure 8 As shown in FIG. 1 , the second leg portions 132C and 132D protrude outward from the top plate 131 and extend along the optical axis. Figure 7 As shown in FIG. 1 , the first support portions 134A and 134B are fixed to the movable body 120 and support the first leg portions 132A and 132B in a rotatable state; and Figure 8 As shown, the second support parts 134C and 134D are fixed to the fixed body 110 and support the second leg parts 132C and 132D in a rotatable state.

[0020] That is, the support portion 134 is provided on a first straight line ( Figure 3 and a second straight line ( BB line) extending from the first surface 121 and the fourth surface 124 to the position between the second surface 122 and the third surface 123 as viewed from the optical axis. Figure 3 AA straight line) on the extension line of the movable body 120. Figure 7 and Figure 8As shown in the figure, each support part 134 has the same structure, and the engaging part 134a having the concave part 135 engaged with the convex part 133 provided on each leg part 132 and the fixed part 134b fixed to the fixed body 110 or the movable body 120 are formed in a U-shape facing each other, and the gimbal mechanism 130 supports the rotating member 136 by the elastic force of the U-shaped support part 134, and holds the movable body 120 so that it can rotate relative to the fixed body 110. That is, the gimbal mechanism 130 of this embodiment is composed of the top plate 131 and the rotating member 136 of the leg part 132 having high rigidity, and the support part 134 having a U-shape and being easily bent.

[0021] <Drive Mechanism> The driving mechanism 140 of this embodiment includes: a magnet 141A and a coil 142A disposed at a position opposite to the magnet 141A; a magnet 141B and a coil 142B disposed at a position opposite to the magnet 141B; a magnet 141C and a coil 142C disposed at a position opposite to the magnet 141C; and a magnet 141D and a coil 142D disposed at a position opposite to the magnet 141D. Here, the magnet 141A, the magnet 141B, the magnet 141C, and the magnet 141D have the same structure, and the coil 142A, the coil 142B, the coil 142C, and the coil 142D have the same structure. Among them, the magnet 141A and the coil 142A, the magnet 141C and the coil 142C constitute a pitch axis swing mechanism. In addition, the magnet 141B and the coil 142B, the magnet 141D and the coil 142D constitute a yaw axis swing mechanism.

[0022] Below, refer to Figures 9 to 11 , the optical unit 1 of this embodiment is further described from the perspective of the actuator 10. As described above, the actuator 10 of this embodiment can connect the lens unit 3 and the sensor unit 4. And, as described above, it is provided with a movable body 120, which is connected to the lens unit 3 and the sensor unit 4, and has: a first surface 121 and a second surface 122 parallel to the optical axis direction and opposite to each other; and a third surface 123 and a fourth surface 124 parallel to the optical axis direction, orthogonal to the first surface 121 and the second surface 122 and opposite to each other. In addition, it is provided with the fixed body 110, the gimbal mechanism 130, and the driving mechanism 140 described above.

[0023] like Fig. 9As shown, in the driving mechanism 140, the magnet 141 includes: a magnet 141A as a first magnet, which is arranged on the first surface 121; a magnet 141C as a second magnet, which is arranged on the second surface 122; a magnet 141B as a third magnet, which is arranged on the third surface 123; and a magnet 141D as a fourth magnet, which is arranged on the fourth surface 124. In addition, the coil 142 includes: a coil 142A as a first coil, which is arranged on the surface of the fixed body 110 opposite to the first magnet (magnet 141A), that is, the first relative surface 111; a coil 142C as a second coil, which is arranged on the surface of the fixed body 110 opposite to the second magnet (magnet 141C), that is, the second relative surface 112; a coil 142B as a third coil, which is arranged on the surface of the fixed body 110 opposite to the third magnet (magnet 141B), that is, the third relative surface 113; and a coil 142D as a fourth coil, which is arranged on the surface of the fixed body 110 opposite to the fourth magnet (magnet 141D), that is, the fourth relative surface 114. In addition, as a flexible substrate 143, there is: a flexible substrate 143A as a first flexible substrate, which connects the first coil (coil 142A) and the third coil (coil 142B); a flexible substrate 143B as a second flexible substrate, which connects the third coil (coil 142B) and the second coil (coil 142C); and a flexible substrate 143C as a third flexible substrate, which connects the second coil (coil 142C) and the fourth coil (coil 142D).

[0024] Explain from another perspective, Fig.10 As shown, in the actuator 10 of this embodiment, the coil 142A, the coil 142B, the coil 142C, and the coil 142D are provided as the driving mechanism 140. In addition, in the actuator 10 of this embodiment, the driving mechanism 140 includes: a flexible substrate 143A connecting the coil 142A and the coil 142B; a flexible substrate 143B connecting the coil 142B and the coil 142C; a flexible substrate 143C connecting the coil 142C and the coil 142D; and a flexible substrate 143D connecting the coil 142C and the terminal 144. Here, the coil 142A and the coil 142D are not connected, and the coil 142A and the coil 142D are coils 142 located at the ends, respectively.

[0025] As described above, in the gimbal mechanism 130, the first straight line ( Figure 3 The second straight line ( BB line BB) extending from the position between the first surface 121 and the fourth surface 124 to the position between the second surface 122 and the third surface 123 when viewed from the optical axis direction. Figure 3 In other words, the actuator 10 of this embodiment arranges the region where the coils 142 are not connected to each other (the region where the coils 142A and the coils 142D are not connected) near the support portion 134 provided on the movable body 120.

[0026] Here, in the case of a structure in which the flexible substrate 143 connecting the coils 142 is arranged near the support portion 134 provided in the movable body 120, the displacement of the movable body 120 is more likely to cause interference between the movable body 120 and the flexible substrate 143 than in a structure in which the flexible substrate 143 connecting the coils 142 is arranged near the support portion 134 provided in the fixed body 110. In addition, in order to suppress the interference between the movable body 120 and the flexible substrate 143, it is necessary to increase the interval between the support portion 134 and the flexible substrate 143 and to form the periphery of the installation position of the flexible substrate 143 (flexible substrate installation groove 115 of the fixed body 110) with a thin wall. However, in the case in which the periphery of the installation position of the flexible substrate 143 in the fixed body 110 is formed with a thin wall, in order not to reduce the rigidity of the fixed body 110, it is sometimes necessary to form a reinforcement portion around the installation position of the flexible substrate 143 in the fixed body 110, and the actuator 10 is likely to be enlarged.

[0027] Therefore, in the actuator 10 of the present embodiment, in a structure in which the support portion 134 for supporting the leg portion 132 of the gimbal mechanism 130 is formed on the fixed body 110 and the movable body 120, the flexible substrate 143 for connecting the coils 142 constituting the drive mechanism 140 is arranged to avoid as much as possible the position of the support portion 134 provided on the movable body 120. By adopting such a structure, it is not necessary to reinforce the vicinity of the position of the support portion 134 provided on the movable body 120 in the fixed body 110, and the actuator 10 can be miniaturized.

[0028] In addition, in the actuator 10 of the present embodiment, as Fig.11As shown in FIG. 1 and FIG. 2 , a reinforcing portion 116 is formed at a position near the flexible substrate arrangement groove 115 of the fixed body 110 where the flexible substrate 143B is arranged corresponding to the position of the support portion 134 provided on the movable body 120. In other words, the actuator 10 of the present embodiment is provided with the reinforcing portion 116 around the second flexible substrate (flexible substrate 143B) connecting the third coil (coil 142B) and the second coil (coil 142C) on the fixed body 110 when viewed from the optical axis direction. In the actuator 10 of the present embodiment, the reinforcing portion 116 also serves as a fixing portion of the flexible substrate 143D, thereby suppressing the increase in size of the actuator 10 and suppressing the reduction in strength of the position near the flexible substrate arrangement groove 115 of the fixed body 110 where the flexible substrate 143B is arranged. In other words, the actuator 10 of this embodiment reduces the number of reinforcements 116 formed by arranging the region where the coils 142 are not connected to each other at one of the two positions of the support portions 134 provided on the movable body 120 , thereby suppressing an increase in the size of the actuator 10 .

[0029] Here, as described above, the coil 142A and the coil 142D are not connected, and the coil 142A and the coil 142D are coils 142 located at the ends, respectively. Therefore, the flexible substrate 143A connected to the coil 142A and the flexible substrate 143C connected to the coil 142D have a narrow width B1 (width in the optical axis direction) required for signal exchange with one coil 142. On the other hand, the flexible substrate 143B connecting the coil 142B and the coil 142C has a width B2 (width in the optical axis direction, twice the width B1) required for signal exchange with the two coils 142, the coil 142A and the coil 142B. In addition, the flexible substrate 143D has a width B3 (four times the width B1) required for signal exchange with the four coils 142, the coil 142A, the coil 142B, the coil 142C, and the coil 142D.

[0030] As described above, in the actuator 10 of the present embodiment, the fixed body 110 has the flexible substrate arrangement groove 115 which is recessed inwardly when viewed from the optical axis direction and is used to arrange the flexible substrate 143 along the groove. Fig.11 As shown in FIG. 1 , the width of the flexible substrate arrangement groove 115 in the optical axis direction is determined according to the width B1 of the first flexible substrate (flexible substrate 143A) and the width B2 of the second flexible substrate (flexible substrate 143B) in the optical axis direction. Moreover, the corresponding flexible substrate arrangement groove 115 also determines the width in the optical axis direction according to the width B1 of the third flexible substrate (flexible substrate 143C). That is, the actuator 10 of the present embodiment suppresses the strength reduction of the position near the flexible substrate arrangement groove 115 by making the width of the flexible substrate arrangement groove 115 where the flexible substrate 143 is arranged as narrow as possible corresponding to the flexible substrate 143.

[0031] Finally, the present invention will be fully described below. (1) An actuator capable of connecting a lens unit and a sensor unit, comprising: a movable body, which connects the lens unit and the sensor unit, and has a first surface and a second surface parallel to the optical axis direction and opposite to each other, and a third surface and a fourth surface parallel to the optical axis direction, orthogonal to the first surface and the second surface and opposite to each other; a fixed body, which holds the movable body in a state where it can rotate with at least one direction of a direction intersecting the optical axis direction as a rotation axis; a gimbal mechanism, which has a rotating component and a supporting portion, the rotating component having a frame-shaped top plate passing through the movable body and a plurality of legs extending from the top plate in the optical axis direction, the supporting portion engaging with the legs and supporting the legs in a state where they can rotate; and a driving mechanism, which has a magnet, a coil and a flexible substrate connecting the coils to each other, and generates a driving force that rotates the movable body relative to the fixed body, the driving mechanism having: a first magnet as the magnet, which is arranged on the first surface, a second magnet arranged on the second surface, a a third magnet disposed on the fourth surface and a fourth magnet disposed on the fourth surface; a first coil disposed on the surface of the fixed body opposite to the first magnet, a second coil disposed on the surface of the fixed body opposite to the second magnet, a third coil disposed on the surface of the fixed body opposite to the third magnet, and a fourth coil disposed on the surface of the fixed body opposite to the fourth magnet as the coils; and a first flexible substrate connecting the first coil and the third coil, a second flexible substrate connecting the third coil and the second coil, and a third flexible substrate connecting the second coil and the fourth coil as the flexible substrate. In the gimbal mechanism, the support parts are provided at two locations of the fixed body on an extension line of a first straight line extending from a position between the first surface and the third surface to a position between the second surface and the fourth surface when viewed from the optical axis direction and at two locations of the movable body on an extension line of a second straight line extending from a position between the first surface and the fourth surface to a position between the second surface and the third surface when viewed from the optical axis direction. (2) In the actuator described in (1) above, the fixed body has a flexible substrate configuration groove, which is recessed inward when viewed from the optical axis direction and is used to configure the flexible substrate along the groove, and the width of the flexible substrate configuration groove in the optical axis direction is determined according to the width of the first flexible substrate in the optical axis direction, the width of the second flexible substrate, and the width of the third flexible substrate. (3) In the actuator described in (1) or (2) above, the fixed body has a reinforcing portion formed around the second flexible substrate when viewed from the optical axis direction. (4) An optical unit includes: the actuator according to any one of (1) to (3) above; the lens unit; and the sensor unit. Explanation of symbols

[0035] 1 optical unit, 2 frame, 2a hole portion, 3 lens unit, 3a lens, 4 sensor unit, 10 actuator, 31 lens setting portion, 32 first connection portion, 41 large diameter portion, 41a image pickup element, 41b flexible substrate, 42 second connection portion, 110 fixed body, 111 first opposing surface, 112 second opposing surface, 113 third opposing surface, 114 fourth opposing surface, 115 flexible substrate configuration groove, 116 reinforcement portion, 120 movable body, 121 first surface, 122 second surface, 123 third surface, 124 fourth surface, 125 first insertion port, 126 second insertion port, 130 gimbal mechanism, 131 top plate, 132 leg portion, 132A first leg portion, 132B first leg portion, 132C second leg portion, 132D second leg portion, 133 convex portion, 134 support portion, 134a engaging portion, 134b fixing portion, 134A first supporting portion, 134B first supporting portion, 134C second supporting portion, 134D second supporting portion, 135 recessed portion, 136 rotating component, 140 driving mechanism, 141 magnet, 141A magnet (first magnet), 141B magnet (third magnet), 141C magnet (second magnet), 141D magnet (fourth magnet), 142 coil, 142A coil (first coil), 142B coil (third coil), 142C coil (second coil), 142D coil (fourth coil), 143 flexible substrate, 143A flexible substrate (first flexible substrate), 143B flexible substrate (second flexible substrate), 143C flexible substrate (third flexible substrate), 143D flexible substrate, 144 terminal, AX optical axis.

Claims

1. An actuator capable of connecting a lens unit and a sensor unit, characterized in that: have: a movable body connecting the lens unit and the sensor unit and having a first surface and a second surface parallel to the optical axis direction and opposite to each other, and a third surface and a fourth surface parallel to the optical axis direction and orthogonal to the first surface and the second surface and opposite to each other; a fixed body that holds the movable body in a state where the movable body can rotate about at least one of the directions intersecting the optical axis direction as a rotation axis; A gimbal mechanism, the gimbal mechanism comprising a rotating member and a supporting portion, the rotating member comprising a frame-shaped top plate passing through the movable body and a plurality of legs extending from the top plate in the optical axis direction, the supporting portion engaging with the legs and supporting the legs in a rotatable state; as well as a drive mechanism including a magnet, a coil, and a flexible substrate connecting the coils, and generating a drive force for rotating the movable body relative to the fixed body, In the driving mechanism, As the magnet, there are: a first magnet arranged on the first surface; a second magnet arranged on the second surface; and a third magnet arranged on the third surface; and a fourth magnet disposed on the fourth surface, The coil includes: a first coil arranged on a surface of the fixed body opposite to the first magnet; a second coil arranged on a surface of the fixed body opposite to the second magnet; a third coil arranged on a surface of the fixed body opposite to the third magnet; and a fourth coil arranged on a surface of the fixed body opposite to the fourth magnet. The flexible substrate includes: a first flexible substrate connecting the first coil and the third coil; a second flexible substrate connecting the third coil and the second coil; and a third flexible substrate connecting the second coil and the fourth coil. In the gimbal mechanism, the support parts are provided at two locations of the fixed body on an extension line of a first straight line extending from a position between the first surface and the third surface to a position between the second surface and the fourth surface when viewed from the optical axis direction, and at two locations of the movable body on an extension line of a second straight line extending from a position between the first surface and the fourth surface to a position between the second surface and the third surface when viewed from the optical axis direction.

2. The actuator according to claim 1, characterized in that The fixed body has a flexible substrate configuration groove, which is recessed inward when viewed from the optical axis direction and is used to configure the flexible substrate along the groove. The width of the flexible substrate configuration groove in the optical axis direction is determined according to the width of the first flexible substrate, the width of the second flexible substrate, and the width of the third flexible substrate in the optical axis direction.

3. The actuator according to claim 1 or 2, characterized in that: When viewed from the optical axis direction, the fixing body has a reinforcement portion formed around the second flexible substrate.

4. An optical unit, characterized in that: have: The actuator according to claim 1 or 2; the lens unit; and The sensor unit.

Images