WO2022004011A1 - Unité optique - Google Patents

Unité optique Download PDF

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Publication number
WO2022004011A1
WO2022004011A1 PCT/JP2020/048293 JP2020048293W WO2022004011A1 WO 2022004011 A1 WO2022004011 A1 WO 2022004011A1 JP 2020048293 W JP2020048293 W JP 2020048293W WO 2022004011 A1 WO2022004011 A1 WO 2022004011A1
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WO
WIPO (PCT)
Prior art keywords
magnet
contact member
holder
outer magnet
optical unit
Prior art date
Application number
PCT/JP2020/048293
Other languages
English (en)
Japanese (ja)
Inventor
京史 大坪
智浩 江川
一宏 佐齋
Original Assignee
日本電産株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電産株式会社 filed Critical 日本電産株式会社
Priority to CN202080102653.4A priority Critical patent/CN115867858A/zh
Publication of WO2022004011A1 publication Critical patent/WO2022004011A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing

Definitions

  • the present invention relates to an optical unit.
  • the captured image may be blurred due to camera shake.
  • an image stabilization device has been put into practical use to enable clear shooting with image blur prevention.
  • the image stabilization device can eliminate the blur of the image by correcting the position and orientation of the camera module according to the shake. It was
  • the image blur correction function may be deteriorated due to fatigue.
  • the image pickup device is used continuously for a short period of time, deterioration due to fatigue will progress remarkably. It was
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an optical unit capable of suppressing deterioration of an image blur correction function.
  • An exemplary optical unit of the present invention comprises a fixed body and a movable body that is swingably supported with respect to the fixed body.
  • the movable body includes an optical element having an optical axis, a holder into which the optical element can be inserted, a contact member arranged in the holder and in contact with the fixed body, and an outer magnet provided in the contact member. It has an inner magnet located closer to the optical axis of the optical element than the outer magnet with respect to the outer magnet. The polarities of the outer magnet and the paired region of the inner magnet are equal to each other.
  • the optical unit of the present invention can suppress deterioration of the image stabilization function.
  • FIG. 6 is a schematic cross-sectional view of an optical unit along the VIC-VIC line of FIG. 6B. It is a schematic top view of the optical unit of this embodiment.
  • FIG. 6 is a schematic cross-sectional view of an optical unit along the VIIB-VIIB line of FIG. 7A. It is a schematic perspective view of a movable body and a magnet in the optical unit of this embodiment. It is a schematic top view of the optical unit of this embodiment.
  • FIG. 8B is a schematic cross-sectional view of the optical unit along the VIIIC-VIIIC line of FIG. 8B. It is a schematic partial enlarged sectional view of the optical unit of this embodiment. It is a schematic partial enlarged sectional view of the optical unit of this embodiment. It is a schematic partial enlarged sectional view of the optical unit of this embodiment. It is a schematic partial enlarged sectional view of the optical unit of this embodiment.
  • the optical unit 100 is suitably used as an optical component of a smartphone. It was
  • FIG. 1 is a schematic perspective view of a smartphone 200 provided with the optical unit 100 of the present embodiment. It was
  • the optical unit 100 is mounted on a smartphone 200 as an example.
  • the smartphone 200 light L is incident from the outside through the optical unit 100, and a subject image is imaged based on the light incident on the optical unit 100.
  • the optical unit 100 is used to correct the shake of the captured image when the smartphone 200 shakes.
  • the optical unit 100 may include an image pickup element, and the optical unit 100 may include an optical member that transmits light to the image pickup element. It was
  • the optical unit 100 is preferably manufactured in a small size.
  • the smartphone 200 itself can be miniaturized, or another component can be mounted in the smartphone 200 without enlarging the smartphone 200. It was
  • the application of the optical unit 100 is not limited to the smartphone 200, and can be used for various devices such as cameras and videos without particular limitation.
  • the optical unit 100 may be mounted on, for example, a mobile phone with a camera, a photographing device such as a drive recorder, or an action camera and a wearable camera mounted on a moving body such as a helmet, a bicycle, or a radio-controlled helicopter. It was
  • FIG. 2 is a schematic perspective view of the optical unit 100 of the present embodiment
  • FIG. 3 is a schematic exploded perspective view of the optical unit 100 of the present embodiment.
  • the optical unit 100 includes a fixed body 110 and a movable body 120.
  • the movable body 120 is swingably supported with respect to the fixed body 110.
  • the movable body 120 is inserted into the fixed body 110 and held by the fixed body 110. It was
  • the optical unit 100 may further include a lid portion 100L. By covering one side of the fixed body 110 and the movable body 120 with the lid portion 100L, it is possible to prevent the movable body 120 from being detached from the fixed body 110. It was
  • the movable body 120 has an optical element 130, a holder 140, a contact member 150, an outer magnet 160, and an inner magnet 170.
  • the optical element 130 has an optical axis P.
  • the holder 140 can insert the optical element 130. It was
  • the optical axis P of the optical element 130 becomes parallel to the Z-axis direction. From this state, when the movable body 120 swings with respect to the fixed body 110, the optical axis P of the optical element 130 swings, so that the optical axis P is no longer parallel to the Z-axis direction. It was
  • the description will be made on the premise that the movable body 120 does not swing with respect to the fixed body 110 and the optical axis P is maintained in a state parallel to the Z-axis direction. That is, in the description for explaining the shape, positional relationship, operation, etc. of the fixed body 110, the movable body 120, the lid portion 100L, etc. with the optical axis P as a reference, unless otherwise specified regarding the inclination of the optical axis P, the optical axis It is assumed that P is in a state parallel to the Z-axis direction. It was
  • the X-axis direction is a direction that intersects the optical axis P and is an axis of rotation in the yawing direction.
  • the Y-axis direction is a direction that intersects the optical axis P and is an axis of rotation in the pitching direction.
  • the Z-axis direction is the optical axis direction of the optical element 130, and is the axis of rotation in the rolling direction.
  • the optical axis direction indicates a direction parallel to the extending direction of the optical axis P. It was
  • the optical unit 100 corrects the inclination of the optical element 130 based on the acceleration, the angular velocity, the amount of runout, and the like detected by a detection means such as a gyroscope in order to avoid distortion of the captured image.
  • the optical unit 100 has a rotation direction (yowing direction) with the X axis as the rotation axis, a rotation direction (pitching direction) with the Y axis as the rotation axis, and a rotation direction (rolling direction) with the Z axis as the rotation axis. ),
  • the tilt of the optical element 130 is corrected by swinging (rotating) the movable body 120. It was
  • the optical element 130 has an optical axis P.
  • the optical axis P of the optical element 130 is parallel to the normal of the light incident surface of the optical element 130. Light from the optical axis P is incident on the optical element 130. It was
  • the optical element 130 has a lens 132 and a housing 134.
  • the optical element 130 may have an image pickup element in the housing 134.
  • the optical element 130 provided with the image pickup element is also called a camera module.
  • the holder 140 has a ring shape in which both ends in the Z-axis direction are open.
  • An optical element 130 is attached to the inside of the holder 140. It was
  • the contact member 150 is arranged in the holder 140.
  • the contact member 150 comes into contact with the fixed body 110.
  • the outer magnet 160 is provided on the contact member 150.
  • the inner magnet 170 is located closer to the optical axis P of the optical element 130 than the outer magnet 160 with respect to the outer magnet 160.
  • the outer magnet 160 and the inner magnet 170 have the same polarity in the paired regions. Therefore, since the outer magnet 160 and the inner magnet 170 repel each other, the contact member 150 provided with the outer magnet 160 is pushed toward the fixed body 110 with respect to the inner magnet 170 located inside the outer magnet 160. .. Therefore, the movable body 120 can be stably supported with respect to the fixed body 110 by suppressing deterioration of the swing function. It was
  • the optical unit 100 further includes a magnet 180 and a coil 190.
  • the coil 190 faces the magnet 180.
  • the magnet 180 is provided on one of the fixed body 110 and the movable body 120, and the coil 190 is provided on the other of the fixed body 110 and the movable body 120. It was
  • the magnet 180 is provided on the movable body 120, and the coil 190 is provided on the fixed body 110.
  • the magnet 180 is arranged on the outer peripheral surface of the holder 140, and the coil 190 is arranged on the side surface of the fixed body 110.
  • the magnet 180 may be provided on the fixed body 110 and the coil 190 may be provided on the movable body 120. It was
  • the optical unit 100 is preferably manufactured in a small size.
  • the size of the optical unit 100 (for example, the length of the fixed body 110 along the X-axis direction or the Y-axis direction) is 10 mm or more and 50 mm or less. be. It was
  • the fixed body 110 has a substantially cylindrical shape.
  • the outer shape of the fixed body 110 is a rectangular parallelepiped shape with a through hole having a substantially rectangular cross section.
  • the fixed body 110 is formed of, for example, a resin.
  • the fixed body 110 has a frame portion 111 and a side portion 112. The side portion 112 is supported by the frame portion 111. An opening 111h is formed in the frame portion 111.
  • the fixed body 110 has a concave surface 110q.
  • the concave surface 110q is located on the inner peripheral surface of the side portion 112.
  • the concave surface 110q comes into contact with the movable body 120.
  • the movable body 120 swings with respect to the fixed body 110, the movable body 120 slides on the concave surface 110q while in contact with the concave surface 110q.
  • the concave surface 110q preferably has a part of the concave spherical shape. It was
  • the concave surface 110q is arranged at the four corners of the fixed body 110.
  • the radii of curvature of the four concave surfaces 110q may be equal.
  • each of the four concave surfaces 110q may form a part of one large concave spherical surface.
  • the radii of curvature of the four concave surfaces 110q may be different. It was
  • the fixed body 110 has a notch portion 110n connected to the concave surface 110q.
  • the notch 110n allows the holder 140 on which the contact member 150 is arranged to be easily inserted into the fixed body 110. It was
  • the optical element 130 has a lens 132 and a housing 134.
  • the housing 134 has a thin rectangular parallelepiped shape.
  • the lens 132 is arranged in the housing 134.
  • the lens 132 is arranged on the optical axis P at the center of one surface of the housing 134.
  • the optical axis P and the lens 132 face the subject, and light from a direction along the optical axis P is incident on the optical element 130.
  • An image sensor or the like may be built in the housing 134.
  • a flexible wiring board Flexible Printed Circuit: FPC
  • the signal captured by the optical element 130 is taken out to the outside via the FPC.
  • the holder 140 has a frame shape.
  • the holder 140 surrounds the optical element 130 from the outside.
  • the holder 140 is made of resin.
  • the holder 140 is a plate-shaped frame having a thickness extending in a direction orthogonal to the optical axis P.
  • the direction orthogonal to the optical axis P is a direction that intersects the optical axis P and is perpendicular to the optical axis P.
  • a direction that intersects the optical axis P and is orthogonal to the optical axis P may be referred to as a “diameter direction”.
  • the outside in the radial direction indicates a direction away from the optical axis P in the radial direction.
  • R shows an example in the radial direction.
  • the direction of rotation about the optical axis P may be described as "circumferential direction”.
  • S indicates a circumferential direction. The details of the configuration of the holder 140 will be described later. It was
  • the contact member 150 comes into contact with the fixed body 110.
  • the contact member 150 projects from the holder 140 toward the fixed body 110. At least a portion of the contact member 150 is located on the outer surface of the holder 140. Specifically, at least a portion of the contact member 150 is located on the outer surface of the corner of the holder 140.
  • the contact member 150 preferably slides with respect to the fixed body 110. In this case, the contact member 150 preferably has a cylindrical portion. As a result, the movable body 120 can be smoothly moved with respect to the fixed body 110.
  • the contact member 150 has a hemispherical portion.
  • the contact member 150 has a convex portion 150p.
  • the convex portion 150p is located on the radial outer side of the contact member 150.
  • the convex portion 150p projects radially outward from the holder 140 and comes into contact with the fixed body 110.
  • the convex portion 150p may have a curved shape that is curved and protrudes.
  • the convex portion 150p is curved in a spherical shape. It was
  • At least a part of the contact member 150 is provided as a member different from the holder 140 and is movable with respect to the holder 140.
  • the contact member 150 is composed of a member different from the holder 140.
  • this embodiment is not limited to this.
  • At least a part of the contact member 150 may be made of the same member as the holder 140. The details of the configuration of the contact member 150 will be described later. It was
  • the inner magnet 170 is located closer to the optical axis P of the optical element 130 than the outer magnet 160 with respect to the outer magnet 160.
  • the polarities of the paired regions of the outer magnet 160 and the inner magnet 170 are equal.
  • the outer magnet 160 and the inner magnet 170 repel each other due to magnetic interaction.
  • the outer magnet 160 is provided on the contact member 150. Typically, the outer magnet 160 is attached to the contact member 150. The outer magnet 160 is arranged so as not to be removable with respect to the contact member 150. For example, the outer magnet 160 may be adhered to the contact member 150 with an adhesive. Alternatively, the outer magnet 160 may be welded to the contact member 150. It was
  • the outer magnet 160 may be arranged inside the contact member 150 and covered with the outer magnet 160.
  • the outer magnet 160 may be placed in a mold for the contact member 150 when the contact member 150 is molded and manufactured, and the outer magnet 160 may be molded together with the contact member 150. It was
  • the outer magnet 160 is located farther from the optical axis P of the optical element 130 than the inner magnet 170 with respect to the inner magnet 170.
  • the outer magnet 160 is arranged on the contact member 150 and is movable with respect to the holder 140.
  • the inner magnet 170 is preferably fixed to the holder 140.
  • the inner magnet 170 is preferably arranged at a fixed position with respect to the holder 140. It was
  • the inner magnet 170 is arranged with respect to the outer magnet 160.
  • the outer magnet 160 faces the inner magnet 170.
  • the optical unit 100 may have a plurality of outer magnets 160 and inner magnets 170 as a pair. Further, in the pair of outer magnets 160 and inner magnets 170, the outer magnet 160 may be formed of one magnet and the inner magnet 170 may be formed of two or more magnets. Alternatively, the outer magnet 160 may be formed from two or more magnets and the inner magnet 170 may be formed from one magnet. It was
  • the movable body 120 moves smoothly with respect to the fixed body 110. Therefore, the magnetic interaction between the outer magnet 160 and the inner magnet 170 is preferably small. It was
  • the magnet 180 generates a magnetic field.
  • the magnet 180 is a permanent magnet.
  • the magnet 180 includes a first magnet 182, a second magnet 184, and a third magnet 186.
  • the first magnet 182, the second magnet 184, and the third magnet 186 are attached to the side surfaces of the holder 140, respectively.
  • the first magnet 182 is located on the ⁇ Y direction side with respect to the movable body 120 and extends in the X-axis direction.
  • the second magnet 184 is located on the + Y direction side with respect to the movable body 120 and extends in the X-axis direction.
  • the third magnet 186 is located on the ⁇ X direction side with respect to the movable body 120 and extends in the Y-axis direction. It was
  • the coil 190 includes a first coil 192, a second coil 194, and a third coil 196.
  • the first coil 192, the second coil 194, and the third coil 196 are attached to the fixed body 110, respectively.
  • the first coil 192 is located on the ⁇ Y direction side with respect to the fixed body 110 and extends in the Z axis direction.
  • the second coil 194 is located on the + Y direction side with respect to the fixed body 110 and extends in the X-axis direction.
  • the third coil 196 is located on the ⁇ X direction side with respect to the fixed body 110 and extends in the Y-axis direction. It was
  • the first magnet 182 and the first coil 192 generate a driving force for rotating the movable body 120 around the Z axis.
  • the second magnet 184 and the second coil 194 generate a driving force for rotating the movable body 120 around the X axis
  • the third magnet 186 and the third coil 196 rotate the movable body 120 around the Y axis. Generates a driving force to rotate the magnet. It was
  • the first magnet 182 is magnetized so that the magnetic poles of the surface facing outward in the radial direction are different with respect to the magnetizing polarization line 182b extending in the optical axis direction along the Z-axis direction.
  • One end of the first magnet 182 along the X-axis direction has one polarity and the other end has the other polarity. It was
  • the second magnet 184 is magnetized so that the magnetic poles of the surface facing outward in the radial direction are differently magnetized with the magnetizing polarization line 184b extending in the optical axis direction along the X-axis direction as a boundary.
  • One end of the second magnet 184 along the Z-axis direction has one polarity and the other end has the other polarity.
  • the third magnet 186 is magnetized so that the magnetic poles of the surface facing outward in the radial direction are differently magnetized with respect to the magnetizing polarization line 186b extending in the optical axis direction along the Y-axis direction.
  • One end of the third magnet 186 along the Z-axis direction has one polarity and the other end has the other polarity. It was
  • the pitching, yawing and rolling corrections of the movable body 120 are performed as follows.
  • the shake is detected by a magnetic sensor (Hall element) (not shown), and the first coil 192 and the second coil are based on the result.
  • a current is supplied to the coil 194 and the third coil 196 to drive the runout correction magnetic drive mechanism.
  • the runout of the optical unit 100 may be detected by using a runout detection sensor (gyroscope) or the like. Based on the runout detection result, the runout correction magnetic drive mechanism corrects the runout. It was
  • the lid portion 100L covers the fixed body 110 and the movable body 120.
  • the lid portion 100L is formed of, for example, a resin.
  • the lid portion 100L is a plate-shaped member having a thickness in the Z-axis direction.
  • the lid portion 100L is fixed to the + Z direction side (one side in the optical axis direction) of the fixed body 110.
  • the lid portion 100L is fixed to the frame portion 111 of the fixed body 110.
  • the configuration for fixing the lid portion 100L to the fixed body 110 is not particularly limited.
  • the lid portion 100L may be fixed to the fixed body 110 using, for example, a fastening member such as a screw, or may be fixed to the fixed body 110 using an adhesive.
  • the lid portion 100L has a hole 100h and a rotation stop portion 100s.
  • the hole 100h penetrates the lid portion 100L in the Z-axis direction.
  • the hole 100h of the lid portion 100L faces the opening 111h of the fixed body 110.
  • the lens 132 of the movable body 120 is exposed to the outside of the fixed body 110 through the opening 111h of the fixed body 110 and the hole 100h of the lid portion 100L. It was
  • the contact member 150 has a convex portion 150p protruding from the fixed body 110. Since the contact member 150 has the convex portion 150p, the movable body 120 can be made thin. It was
  • the convex portion 150p has a part of a spherical shape. As a result, the movable body 120 can be smoothly moved with respect to the fixed body 110. It was
  • the fixed body 110 has a concave surface 110q in a region in contact with the convex portion 150p of the contact member 150.
  • the concave surface 110q allows the movable body 120 to move smoothly with respect to the fixed body 110. It was
  • the concave surface 110q has a part of the concave spherical shape. Due to the concave spherical shape, the movable body 120 can move smoothly with respect to the fixed body 110. It was
  • the fixed body 110 has a notch portion 110n connected to the concave surface 110q.
  • the movable body 120 can be easily attached to the fixed body 110 by the notch 110n connected to the concave surface 110q of the fixed body 110. It was
  • FIG. 4A is a schematic top view of the holder 140, the contact member 150, the outer magnet 160, the inner magnet 170, and the magnet 180
  • FIG. 4B is a schematic top view of the fixed body 110. It was
  • the holder 140 has a tubular shape and has a through hole 140h.
  • the optical element 130 (FIGS. 2 and 3) is inserted into the through hole 140h of the holder 140.
  • FIG. 4A shows the optical axis P at the position of the optical axis P when the optical element 130 is inserted into the holder 140. It was
  • the holder 140 has a plurality of side portions and a connecting portion that connects adjacent side portions. Specifically, the holder 140 includes a first side portion 142, a second side portion 144, a third side portion 146, a fourth side portion 148, a first connection portion 143, and a second connection portion 145. It has a third connection portion 147 and a fourth connection portion 149. It was
  • the first side portion 142 is located on the ⁇ Y direction side with respect to the optical element 130, and extends in the X-axis direction along the side surface of the optical element 130.
  • the second side portion 144 is located on the + X direction side with respect to the optical element 130 and extends in the Y-axis direction along the side surface of the optical element 130.
  • the third side portion 146 is located on the + Y direction side with respect to the optical element 130 and extends in the X-axis direction along the side surface of the optical element 130.
  • the fourth side portion 148 is located on the ⁇ X direction side with respect to the optical element 130 and extends in the Y-axis direction along the side surface of the optical element 130. It was
  • the first side portion 142 and the third side portion 146 are arranged in parallel with each other.
  • the second side portion 144 and the fourth side portion 148 are arranged in parallel with each other.
  • the first side portion 142, the second side portion 144, the third side portion 146, and the fourth side portion 148 are located in the circumferential direction S with respect to the optical axis P, the first side portion 142, the second side portion 144, and the third side portion.
  • the side portions 146 and the fourth side portion 148 are arranged side by side in this order.
  • first magnet 182 is arranged on the outer peripheral surface of the first side portion 142
  • second magnet 184 is arranged on the outer peripheral surface of the third side portion 146
  • third magnet 186 is arranged on the outer peripheral surface of the fourth side portion 148. Be placed. It was
  • the first connection portion 143, the second connection portion 145, the third connection portion 147, and the fourth connection portion 149 are among the first side portion 142, the second side portion 144, the third side portion 146, and the fourth side portion 148. , Connect adjacent sides.
  • the first connecting portion 143 connects the first side portion 142 and the second side portion 144 by interposing between the first side portion 142 and the second side portion 144.
  • the second connecting portion 145 connects the second side portion 144 and the third side portion 146 by interposing between the second side portion 144 and the third side portion 146.
  • the third connecting portion 147 connects the third side portion 146 and the fourth side portion 148 by interposing between the third side portion 146 and the fourth side portion 148.
  • the fourth connecting portion 149 connects the fourth side portion 148 and the first side portion 142 by interposing between the fourth side portion 148 and the first side portion 142.
  • the first connection portion 143 and the third connection portion 147 are arranged in parallel with each other.
  • the second connection portion 145 and the fourth connection portion 149 are arranged in parallel with each other. It was
  • the contact member 150 is arranged in each of the first connection portion 143, the second connection portion 145, the third connection portion 147, and the fourth connection portion 149.
  • the contact member 150 includes a first contact member 152, a second contact member 154, a third contact member 156, and a fourth contact member 158. It was
  • the first contact member 152, the second contact member 154, the third contact member 156, and the fourth contact member 158 are arranged at predetermined intervals along the circumferential direction S.
  • the convex portions 150p of the first contact member 152, the second contact member 154, the third contact member 156, and the fourth contact member 158 are aligned with respect to the optical axis P along the circumferential direction S.
  • Adjacent convex portions 150p are arranged with an interval of 90 ° in the circumferential direction S about the optical axis P. It was
  • the first contact member 152 is located on the + X direction and the ⁇ Y direction side with respect to the optical axis P of the optical element 130
  • the second contact member 154 is located in the + X direction with respect to the optical axis P of the optical element 130. And located on the + Y direction side.
  • the third contact member 156 is located on the ⁇ X direction and the + Y direction side with respect to the optical axis P of the optical element 130
  • the fourth contact member 158 is in the ⁇ X direction with respect to the optical axis P of the optical element 130. And is located on the -Y direction side.
  • the first contact member 152, the second contact member 154, the third contact member 156, and the fourth contact member 158 may be collectively referred to as the contact member 150. It was
  • the outer magnet 160 is provided on the contact member 150.
  • the outer magnet 160 includes a first outer magnet 162, a second outer magnet 164, a third outer magnet 166, and a fourth outer magnet 168.
  • the first outer magnet 162 is provided on the first contact member 152
  • the second outer magnet 164 is provided on the second contact member 154.
  • the third outer magnet 166 is provided on the third contact member 156
  • the fourth outer magnet 168 is provided on the fourth contact member 158. It was
  • the first outer magnet 162 is located in the + X direction and the ⁇ Y direction side with respect to the optical axis P of the optical element 130
  • the second outer magnet 164 is in the + X direction with respect to the optical axis P of the optical element 130.
  • the third outer magnet 166 is located on the ⁇ X direction and the + Y direction side with respect to the optical axis P of the optical element 130
  • the fourth outer magnet 168 is located on the optical axis P of the optical element 130. It is located on the -X direction and the -Y direction side with respect to.
  • the first outer magnet 162, the second outer magnet 164, the third outer magnet 166, and the fourth outer magnet 168 may be collectively referred to as the outer magnet 160. It was
  • the inner magnet 170 is arranged closer to the optical axis P of the optical element 130 than the outer magnet 160 with respect to the outer magnet 160. It was
  • the inner magnet 170 includes a first inner magnet 172, a second inner magnet 174, a third inner magnet 176, and a fourth inner magnet 178.
  • the first inner magnet 172 is arranged closer to the optical axis P of the optical element 130 than the first outer magnet 162 with respect to the first outer magnet 162.
  • the second inner magnet 174 is arranged closer to the optical axis P of the optical element 130 than the second outer magnet 164 with respect to the second outer magnet 164.
  • the third inner magnet 176 is arranged closer to the optical axis P of the optical element 130 than the third outer magnet 166 with respect to the third outer magnet 166, and the fourth inner magnet 178 is arranged with respect to the fourth outer magnet 168. It is arranged closer to the optical axis P of the optical element 130 than the fourth outer magnet 168. It was
  • the first inner magnet 172 is located on the + X direction and the ⁇ Y direction side with respect to the optical axis P of the optical element 130
  • the second inner magnet 174 is located in the + X direction with respect to the optical axis P of the optical element 130.
  • the third inner magnet 176 is located on the ⁇ X direction and the + Y direction side with respect to the optical axis P of the optical element 130
  • the fourth inner magnet 178 is located on the optical axis P of the optical element 130. It is located on the -X direction and the -Y direction side with respect to.
  • the first inner magnet 172, the second inner magnet 174, the third inner magnet 176, and the fourth inner magnet 178 may be collectively referred to as an inner magnet 170. It was
  • the inner magnet 170 is preferably fixed in the holder 140. As a result, the inner magnet 170 that applies a magnetic force to the outer magnet 160 arranged on the contact member 150 can be fixed to the holder 140. It was
  • the holder 140 has an inner peripheral surface 140i that holds the optical element 130.
  • the inner peripheral surface 140i is located in the through hole 140h.
  • the inner peripheral surface 140i includes a first inner side surface 142i, a second inner side surface 144i, a third inner side surface 146i, a fourth inner side surface 148i, a first corner portion 143i, a second corner portion 145i, and a third. It has a corner portion 147i and a fourth corner portion 149i. It was
  • the first inner side surface 142i, the second inner side surface 144i, the third inner side surface 146i and the fourth inner side surface 148i are of the first side portion 142, the second side portion 144, the third side portion 146 and the fourth side portion 148, respectively.
  • the first corner portion 143i, the second corner portion 145i, the third corner portion 147i and the fourth corner portion 149i are the first connection portion 143, the second connection portion 145, the third connection portion 147 and the fourth connection portion, respectively.
  • the first corner portion 143i is located between the first inner side surface 142i and the second inner side surface 144i
  • the second corner portion 145i is located between the second inner side surface 144i and the third inner side surface 146i.
  • the third corner portion 147i is located between the third inner side surface 146i and the fourth inner side surface 148i
  • the fourth corner portion 149i is located between the fourth inner side surface 148i and the first inner side surface 142i.
  • the first contact member 152 is arranged at the first corner portion 143i of the holder 140, and the second contact member 154 is arranged at the second corner portion 145i of the holder 140.
  • the third contact member 156 is arranged at the third corner portion 147i of the holder 140, and the fourth contact member 158 is arranged at the fourth corner portion 149i of the holder 140.
  • the first contact member 152, the second contact member 154, the third contact member 156 and the fourth contact member 158 are attached to the first corner portion 143i, the second corner portion 145i, the third corner portion 147i and the fourth corner portion 149i of the holder 140.
  • the movable body 120 can slide smoothly with respect to the fixed body 110. It was
  • the outer magnet 160 and the inner magnet 170 magnetically repel each other. Therefore, when an external force other than the magnetic force is not generated in the contact member 150 in which the outer magnet 160 is arranged, the contact member 150 moves radially outward and the distance between the optical axis P and the convex portion 150p of the contact member 150.
  • L1 is the longest. It was
  • the fixed body 110 has a frame portion 111 and a side portion 112.
  • the side portion 112 includes a first side portion 112a, a second side portion 112b, a third side portion 112c, and a fourth side portion 112d. It was
  • the first side portion 112a is located on the ⁇ Y direction side with respect to the movable body 120 and extends in the X-axis direction.
  • the second side portion 112b is located on the + X direction side with respect to the movable body 120 and extends in the Y-axis direction.
  • the third side portion 112c is located on the + Y direction side with respect to the movable body 120 and extends in the X-axis direction.
  • the fourth side portion 112d is located on the ⁇ X direction side with respect to the movable body 120 and extends in the Y-axis direction.
  • the first side portion 112a, the second side portion 112b, the third side portion 112c, and the fourth side portion 112d are the first side portion 112a, the second side portion 112b, the third side portion 112c, and the fourth side portion 112d along the circumferential direction S.
  • the four side portions 112d are connected side by side in this order.
  • the space surrounded by the first side portion 112a, the second side portion 112b, the third side portion 112c, and the fourth side portion 112d may be described as the inside 110S of the fixed body 110. be. It was
  • the frame portion 111 is connected to the first side portion 112a, the second side portion 112b, the third side portion 112c, and the fourth side portion 112d from the + Z direction side.
  • the frame portion 111 has an opening 111h that connects the inside 110S of the fixed body 110 and the outside. It was
  • the fixed body 110 is provided with a concave surface 110q.
  • the concave surface 110q is provided on the inner peripheral surface of the fixed body 110.
  • the concave surface 110q has a shape extending in the circumferential direction S.
  • the concave surface 110q has a shape in which the central portion of the concave surface 110q in the Z-axis direction is recessed outward in the radial direction.
  • the concave surface 110q has a curved shape by being curved and recessed. In the present embodiment, the concave surface 110q is curved in a spherical shape. It was
  • the concave surface 110q is inside the connection portion between the first side portion 112a and the second side portion 112b, inside the connection portion between the second side portion 112b and the third side portion 112c, and the third side portion 112c. It is provided inside the connection portion between the fourth side portion 112d and inside the connection portion between the fourth side portion 112d and the first side portion 112a, respectively. It was
  • a plurality of concave surfaces 110q are arranged at predetermined intervals along the circumferential direction S.
  • the four concave surfaces 110q are arranged with respect to the optical axis P along the circumferential direction S, and the adjacent concave surfaces 110q are arranged with an interval of 90 ° in the circumferential direction S about the optical axis P. .. It was
  • the fixed body 110 has a notch 110n.
  • the cutout portion 110n has a shape in which the inner surface of the fixed body 110 is recessed outward in the radial direction.
  • the notch 110n has a shape in which a part of the concave surface 110q of the fixed body 110 is recessed outward in the radial direction.
  • the cutout portion 110n is connected to the concave surface 110q.
  • the cutout portion 110n may not be connected to the concave surface 110q, and may be arranged at a location separated from the concave surface 110q in the circumferential direction S. It was
  • the cutout portion 110n is arranged in a portion of the fixed body 110 located on the + Z axis direction side. That is, the cutout portion 110n is arranged in the portion of the fixed body 110 located on the lens 132 side of the optical element 130 in the optical axis direction. This facilitates the assembly of other parts such as the FPC. It was
  • the distance L2 between the optical axis P and the radial outside of the notch 110n is approximately equal to or slightly longer than the distance L1.
  • the distance L3 between the optical axis P and the concave surface 110q is substantially equal to or slightly shorter than the distance L1.
  • the holder 140 is inserted into the fixed body 110 with the contact member 150, the outer magnet 160, and the inner magnet 170 mounted on the holder 140 shown in FIG. 4A. After that, the optical element 130 is inserted into the holder 140.
  • the optical unit 100 can be manufactured as described above. It was
  • 5A and 5B are schematic exploded perspective views of the holder 140, the contact member 150, the outer magnet 160, and the inner magnet 170 in the movable body 120 of the optical unit 100 of the present embodiment.
  • FIGS. 5A and 5B as an example of the contact member 150, the outer magnet 160, and the inner magnet 170, the first contact member 152, the first outer magnet 162, and the first one mounted on the first connection portion 143 of the holder 140.
  • the inner magnet 172 is illustrated. It was
  • the holder 140 has a through hole 140q connecting the inside and the outside of the holder 140.
  • the through hole 140q is located at a corner of the holder 140.
  • the through hole 140q is provided in each of the first connection portion 143, the second connection portion 145, the third connection portion 147, and the fourth connection portion 149 (FIG. 4A) of the holder 140. It was
  • a through hole 140q is provided in the first connection portion 143 of the holder 140, and the inside and the outside of the holder 140 are connected via the through hole 140q.
  • the diameter of at least a part of the contact member 150 (length in the Z-axis direction) is smaller than the size of the through hole 140q (length in the Z-axis direction). Therefore, the contact member 150 is inserted into the through hole 140q from the inside of the holder 140, and at least a part of the contact member 150 is arranged in the through hole 140q of the holder 140.
  • the length of the through hole 140q along the circumferential direction S is substantially equal to or slightly longer than the length of the contact member 150 along the circumferential direction S.
  • the first contact member 152, the second contact member 154, the third contact member 156 and the fourth contact member 158 are arranged in the through hole 140q of the holder 140. It was
  • the contact member 150 Since the contact member 150 is arranged in the through hole 140q of the holder 140, the movement of the contact member 150 is restricted. Specifically, the contact member 150 is movable in the extending direction of the through hole 140q, while the movement is restricted by the side surface of the through hole 140q. Therefore, when pushed by the magnetic repulsive force between the outer magnet 160 and the inner magnet 170, the contact member 150 in which the outer magnet 160 is arranged is fixed from a specific position along the through hole 140q of the holder 140. Apply force toward the body 110. In this way, the contact member 150 pushes the fixed body 110 from a specific position of the holder 140. It was
  • the through hole 140q extends in the radial direction R (direction extending linearly from the optical axis P). Since the contact member 150 arranged along the radial direction R about the optical axis P of the optical element 130 pushes the fixed body 110, the deviation of the optical axis P of the optical element 130 can be suppressed. It was
  • the holder 140 has an accommodating portion 140r for accommodating the inner magnet 170.
  • the accommodating portion 140r is located at the corner of the holder 140.
  • the accommodating portion 140r is connected to the through hole 140q.
  • the length of the accommodating portion 140r along the circumferential direction S is substantially equal to or slightly longer than the length of the inner magnet 170 along the circumferential direction S.
  • the accommodating portion 140r allows the inner magnet 170 to be accommodated in a predetermined position in the holder. It was
  • the outer magnet 160 is arranged on the contact member 150.
  • the outer magnet 160 is attached to the contact member 150.
  • the contact member 150 is provided with a recess having a diameter substantially equal to or slightly larger than the diameter of the outer magnet 160, and the outer magnet 160 is mounted in the recess of the contact member 150. It was
  • the inner magnet 170 is arranged with respect to the outer magnet 160.
  • the polarities of the paired regions of the outer magnet 160 and the inner magnet 170 are equal. It was
  • the outer magnet 160 is smaller than the inner magnet 170.
  • the length of the outer magnet 160 along the optical axis P is smaller than the length of the inner magnet 170 along the optical axis P.
  • the length of the outer magnet 160 along the circumferential direction S is smaller than the length of the inner magnet 170 along the circumferential direction S. Therefore, even if the position of the movable body 120 fluctuates greatly with respect to the fixed body 110, the contact member 150 pushes the fixed body 110 by effectively utilizing the repulsive force between the outer magnet 160 and the inner magnet 170. Can be done. It was
  • the contact member 150 preferably has a small diameter portion 150s and a large diameter portion 150t.
  • the small diameter portion 150s and the large diameter portion 150t each have a cylindrical shape.
  • the length of the large diameter portion 150t along the optical axis P (for example, the diameter of the circle) is larger than the length of the small diameter portion 150s along the optical axis P (for example, the diameter of the circle).
  • the length of the small diameter portion 150s along the optical axis P is smaller than the length of the through hole 140q along the optical axis P, and the length of the through hole 140q along the optical axis P is the optical axis of the large diameter portion 150t. It is smaller than the length along P.
  • the large diameter portion 150t is located on the inner magnet 170 side. Therefore, it is possible to prevent the contact member 150 from coming off the holder 140.
  • the small diameter portion 150s and the large diameter portion 150t each have a cylindrical shape, but the present embodiment is not limited to this.
  • the small diameter portion 150s and the large diameter portion 150t may each have a quadrangular prism shape. It was
  • the outer magnet 160 is arranged on the large diameter portion 150t of the contact member 150. Since the outer magnet 160 is arranged near the inner magnet 170 of the contact member 150, the repulsive force between the outer magnet 160 and the inner magnet 170 can be effectively used to apply a force to the contact member 150. It was
  • a part of the small diameter portion 150s of the contact member 150 is located in the through hole 140q of the holder 140. Therefore, it is possible to prevent the contact member 150 from coming off the holder 140. It was
  • the outer magnet 160 has a thin disk shape.
  • the diameter of the outer magnet 160 is smaller than the diameter of the large diameter portion 150t of the contact member 150.
  • the outer magnet 160 has a first main surface 160a and a second main surface 160b.
  • the polarity of the first main surface 160a is different from the polarity of the second main surface 160b.
  • the outer magnet 160 is mounted on the contact member 150 from the second main surface 160b side.
  • the first main surface 160a faces the inner magnet 170
  • the second main surface 160b faces the contact member 150. Therefore, the second main surface 160b is located on the fixed body 110. It was
  • the contact member 150 further has a recess 150u on a surface facing the inner magnet 170 to accommodate the outer magnet 160.
  • the outer magnet 160 is housed in the recess 150u.
  • the recess 150u allows the outer magnet 160 to be properly placed within the contact member 150. It was
  • the recess 150u corresponds to a cylindrical shape. It is preferable that the width of the recess 150u (the length along the optical axis P) is substantially equal to or slightly longer than the diameter of the outer magnet 160 (the length along the optical axis P). The depth of the recess 150u (length along the radial direction R) is preferably larger than the thickness of the outer magnet 160 (length along the radial direction R). As a result, it is possible to prevent the outer magnet 160 from being detached from the contact member 150. It was
  • the inner magnet 170 has a rod shape extending in the longitudinal direction.
  • the length of the inner magnet 170 in the longitudinal direction is larger than the diameter of the large diameter portion 150t of the holder 140.
  • the inner magnet 170 has a first main surface 170a and a second main surface 170b.
  • the polarity of the first main surface 170a is different from the polarity of the second main surface 170b.
  • the first main surface 170a of the inner magnet 170 faces the outer magnet 160
  • the second main surface 170b faces the optical element 130. Therefore, the second main surface 170b is located on the optical axis P side of the optical element 130. It was
  • the first main surface 170a of the inner magnet 170 faces the first main surface 160a of the outer magnet 160. Therefore, the paired regions of the outer magnet 160 and the inner magnet 170 are the first main surface 160a and the first main surface 170a. Further, the polarity of the first main surface 170a of the inner magnet 170 is equal to the polarity of the first main surface 160a of the outer magnet 160. Therefore, a force can be applied to the contact member 150 by effectively utilizing the repulsive force between the outer magnet 160 and the inner magnet and 170. It was
  • the through hole 140q of the holder 140, the contact member 150, the outer magnet 160, and the inner magnet 170 are linearly arranged.
  • the line connecting the center of the outer magnet 160 and the center of the inner magnet 170 is parallel to the radial direction R.
  • the straight line connecting the optical axis P of the optical element 130 and the outer magnet 160 at the shortest distance overlaps with the inner magnet 170. Therefore, the repulsive force between the outer magnet 160 and the inner magnet 170 can be effectively used to apply a force to the contact member 150 along the radial direction R. It was
  • the area of the projection region obtained by projecting the outer magnet 160 perpendicularly to the optical axis P of the optical element 130 is equal to or less than the area of the surface (first main surface 170a) of the inner magnet 170 facing the outer magnet 160. ..
  • FIG. 5A and 5B show a mode in which the first contact member 152, the first outer magnet 162, and the first inner magnet 172 are mounted on the holder 140, but the second contact member 154 and the third contact member 156 are shown. And the fourth contact member 158, the second outer magnet 164, the third outer magnet 166 and the fourth outer magnet 168 and the second inner magnet 174, the third inner magnet 176 and the fourth inner magnet 178 are also mounted on the holder 140. Magnet. It was
  • the accommodating portion 140r shown in FIG. 5B is a through hole into which the inner magnet 170 can be inserted from the inside of the holder 140, but the present embodiment is not limited to this.
  • the accommodating portion 140r does not have to penetrate in the radial direction R.
  • the accommodating portion 140r may have a side wall on which the inner magnet 170 is arranged, and may accommodate the inner magnet 170 by inserting the inner magnet 170 into the optical axis P along the side wall. It was
  • FIG. 6A is a schematic perspective view of the movable body 120 and the magnet 180 in the optical unit 100 of the present embodiment
  • FIG. 6B is a schematic top view of the optical unit 100 of the present embodiment.
  • the lid portion 100L is omitted.
  • FIG. 6C is a schematic cross-sectional view of the optical unit 100 along the VIC-VIC line of FIG. 6B. It was
  • the movable body 120 has a thin, substantially rectangular parallelepiped shape.
  • the movable body 120 has an optical element 130, a holder 140, a contact member 150, an outer magnet 160, and an inner magnet 170.
  • the holder 140 has a frame shape, and the optical element 130 is arranged in the holder 140. It was
  • the inner magnet 170 applies a force to the contact member 150 together with the outer magnet 160 along a direction orthogonal to the optical axis P of the optical element 130. Since the inner magnet 170 applies a force to the contact member 150 along the direction orthogonal to the optical axis P of the optical element 130, it is possible to suppress the deviation of the optical axis P of the optical element 130. It was
  • the outer magnet 160 includes a first outer magnet 162 provided on the first contact member 152 and a second outer magnet 164 provided on the second contact member.
  • the inner magnet 170 includes a first inner magnet 172 arranged with respect to the first outer magnet 162 and a second inner magnet 174 arranged with respect to the second outer magnet 164. Since the outer magnet 160 repels the inner magnet 170 at two adjacent corners of the four corners of the holder 140, the contact member 150 in which the outer magnet 160 is arranged is pushed outward. Therefore, the movable body 120 can be moved at an appropriate position with respect to the fixed body 110. It was
  • the first inner magnet 172 applies a force to the first contact member 152 along the direction D1.
  • the first inner magnet 172 applies a force to the first contact member 152 along the direction D1 orthogonal to the optical axis P of the optical element 130. Therefore, the first contact member 152 moves along the direction D1 with respect to the holder 140.
  • the second inner magnet 174 applies a force to the second contact member 154 along the direction D2.
  • the second inner magnet 174 applies a force to the second contact member 154 along the direction D2 orthogonal to the optical axis P of the optical element 130. Therefore, the second contact member 154 moves along the direction D2 with respect to the holder 140.
  • the line connecting the center of the first outer magnet 162 and the center of the first inner magnet 172 and the line connecting the center of the second outer magnet 164 and the center of the second inner magnet 174 are the light of the optical element 130. It intersects on the axis P. The intersection of the direction of the magnetic force between the first outer magnet 162 and the first inner magnet 172 and the direction of the magnetic force between the second outer magnet 164 and the second inner magnet 174 intersects at the optical axis P of the optical element 130. Therefore, the deviation of the optical axis P of the optical element 130 can be suppressed. It was
  • the outer magnet 160 further includes a third outer magnet 166 provided on the third contact member 156 and a fourth outer magnet 168 provided on the fourth contact member 158.
  • the inner magnet 170 further includes a third inner magnet 176 disposed with respect to the third outer magnet 166 and a fourth inner magnet 178 disposed with respect to the fourth outer magnet 168. Therefore, since the outer magnet 160 repels the inner magnet 170 at each of the four corners of the holder 140, the movable body 120 remains fixed even if the movable body 120 moves in any direction with respect to the fixed body 110. It is possible to suppress strong collision with 110 and improve the impact resistance of the optical unit 100. It was
  • the third inner magnet 176 applies a force to the third contact member 156 along the direction D3.
  • the third inner magnet 176 applies a force to the third contact member 156 along the direction D3 orthogonal to the optical axis P of the optical element 130. Therefore, the third inner magnet 176 moves along the direction D3 with respect to the holder 140.
  • the fourth inner magnet 178 applies a force to the fourth contact member 158 along the direction D4.
  • the fourth inner magnet 178 applies a force to the fourth contact member 158 along the direction D4 orthogonal to the optical axis P of the optical element 130. Therefore, the fourth contact member 158 moves along the direction D4 with respect to the holder 140. It was
  • the line connecting the center of the magnet 166 and the center of the third inner magnet 176 and the line connecting the center of the fourth outer magnet 168 and the center of the fourth inner magnet 178 intersect at the optical axis P of the optical element 130. Therefore, since the intersections of the magnetic repulsive forces between the four pairs of outer magnets 160 and the inner magnets 170 intersect at the optical axis P of the optical element 130, the deviation of the optical axis P of the optical element 130 can be suppressed. It was
  • the contact member 150 arranged on the holder 140 pushes the fixed body 110 by the inner magnet 170, it is possible to prevent the movable body 120 from being displaced with respect to the fixed body 110. Therefore, the movable body 120 can move smoothly according to the driving force between the magnet 180 and the coil 190 without strictly adjusting the gap between the fixed body 110 and the movable body 120. It was
  • the movable body 120 is pushed from the inside in the radial direction to the outside in the radial direction with respect to the fixed body 110.
  • the first inner magnet 172 applies a force to the first contact member 152 toward the fixed body 110 along the direction D1.
  • the third inner magnet 176 applies a force to the third contact member 156 toward the fixed body 110 along the direction D3.
  • FIG. 6C shows the first contact member 152, the first outer magnet 162, the first inner magnet 172, the third contact member 156, the third outer magnet 166, and the third inner magnet 176
  • FIG. 6B shows.
  • the inner magnet 170 applies a force to the contact member 150 toward the fixed body 110 along the radial direction, it is possible to prevent the movable body 120 from being displaced with respect to the fixed body 110. Further, since the force applied to the fixed body 110 from the movable body 120 side is weak, the movable body 120 can be smoothly moved with respect to the fixed body 110. It was
  • the gap between the movable body and the fixed body may fluctuate due to the difference in the thermal expansion coefficient of each member.
  • the inner magnet 170 applies a force to the contact member 150 toward the fixed body 110, so that the fixed body 110 is subjected to a force. Therefore, it is possible to prevent the movable body 120 from being displaced. It was
  • the inner magnet 170 is arranged in the holder 140, but the present embodiment is not limited to this.
  • the inner magnet 170 may be arranged on the optical element 130. In this case, the inner magnet 170 may be arranged on the outer peripheral surface of the housing 134 of the optical element 130. Alternatively, the inner magnet 170 may be arranged between the optical element 130 and the holder 140. It was
  • the facing surfaces of the inner magnet 170 and the outer magnet 160 each have one polarity, but the present embodiment is not limited to this.
  • the surface of the inner magnet 170 facing the outer magnet 160 has a first portion of the first polarity and a second portion of the second polarity, and the surface of the outer magnet 160 facing the inner magnet 170 is It has a first portion of the first polarity and a second portion of the second polarity, the first portion of the inner magnet 170 and the first portion of the outer magnet 160 face each other, and the second portion of the inner magnet 170 and the outer magnet.
  • the second portion of 160 may be opposed to it. It was
  • the inner magnet 170 and the outer magnet 160 each have one hard magnetic material, but the present embodiment is not limited thereto.
  • the inner magnet 170 and the outer magnet 160 may each have two or more hard magnetic materials.
  • the contact member 150 has a convex portion 150p, and the fixed body 110 has a concave surface 110q corresponding to the convex portion 150p, and the convex portion on the movable body 120 side.
  • the portion 150p slides with respect to the concave surface 110q on the fixed body 110 side, but the present embodiment is not limited to this.
  • the contact member 150 may have a concave surface
  • the fixed body 110 may have a convex portion corresponding to the concave surface of the contact member 150
  • the convex portion on the fixed body 110 side may slide with respect to the concave surface on the movable body 120 side. .. It was
  • FIG. 7A is a schematic top view of the optical unit 100 of the present embodiment
  • FIG. 7B is a schematic cross-sectional view of the optical unit 100 along the line VIIb-VIIb of FIG. 7A
  • 7A and 7B are with the optical unit 100 described with reference to FIGS. 6B and 6C, except that the contact member 150 has a concave surface 150q radially outward and the fixed body 110 has a convex portion 110p. It has a similar configuration, and duplicate descriptions are omitted to avoid redundancy. It was
  • the convex portion 110p is arranged on the surface of the fixed body 110 facing the movable body 120.
  • the convex portion 110p preferably has a hemispherical shape. It was
  • the movable body 120 of the optical unit 100 includes an optical element 130, a holder 140, a contact member 150, an inner magnet 170, and an outer magnet 160.
  • the contact member 150 has a concave surface 150q on the outer side in the radial direction.
  • the inner magnet 170 applies a force toward the fixed body 110 to the contact member 150 in which the outer magnet 160 is arranged. It was
  • the convex portion 110p of the fixed body 110 slides on the concave surface 150q while in contact with the concave surface 150q on the movable body 120 side.
  • the convex portion 110p is located on the inner peripheral surface of the fixed body 110.
  • the convex portion 110p projects radially inward toward the holder 140 and comes into contact with the contact member 150.
  • the convex portion 110p may have a curved shape that is curved and protrudes.
  • the convex portion 110p is curved in a spherical shape.
  • the concave surface 110q has a part of the concave spherical shape. It was
  • the contact member 150 arranged on the first connection portion 143, the second connection portion 145, the third connection portion 147, and the fourth connection portion 149 of the holder 140 is referred to.
  • a force is applied to the fixed body 110 by the inner magnet 170, but the present embodiment is not limited to this. While a part of the contact member 150 is applied with a force toward the fixed body 110 by the inner magnet 170, the other part of the contact member 150 may not be applied with a force toward the fixed body 110. It was
  • FIGS. 8A to 8C are schematic perspective view of the movable body 120 and the magnet 180 in the optical unit 100 of the present embodiment
  • FIG. 8B is a schematic top view of the optical unit 100 of the present embodiment
  • FIG. 8C is a schematic top view.
  • FIG. 8B is a schematic cross-sectional view of the optical unit 100 along the line VIIIC-VIIIC of FIG. 8B.
  • 8A-8C show that the third contact member 156 and the fourth contact member 158 are a single member with the holder 140, and the third outer magnet 166 corresponds to the third contact member 156 and the fourth contact member 158. It has the same configuration as the optical unit 100 described with reference to FIGS. 6A to 6C, and is redundant, except that the third inner magnet 176, the fourth outer magnet 168, and the fourth inner magnet 178 are not arranged. Omit duplicate description to avoid. It was
  • the movable body 120 has an optical element 130, a holder 140, a contact member 150, an outer magnet 160, and an inner magnet 170.
  • the contact member 150 includes a first contact member 152, a second contact member 154, a third contact member 156, and a fourth contact member 158.
  • the first contact member 152, the second contact member 154, the third contact member 156, and the fourth contact member 158 each have a convex portion 150p.
  • the first contact member 152 and the second contact member 154 are separate members from the holder 140
  • the third contact member 156 and the fourth contact member 158 are single with the holder 140. It is a member. It was
  • the outer magnet 160 includes a first outer magnet 162 and a second outer magnet 164
  • the inner magnet 170 includes a first inner magnet 172 and a second inner magnet 174.
  • the first inner magnet 172 applies a force to the first contact member 152 toward the fixed body 110.
  • the second inner magnet 174 applies a force to the second contact member 154 toward the fixed body 110. Therefore, the first contact member 152 is movable along the direction D1, and the second contact member 154 is movable along the direction D2.
  • the direction D1 is parallel to the radial direction, and the direction D2 is also parallel to the radial direction.
  • the third contact member 156 and the fourth contact member 158 are fixed to the holder 140, and the third contact member 156 and the fourth contact member 158 do not move with respect to the holder 140. It was
  • connection portion 143 and second connection portion 143 two adjacent connection portions (first connection portion 143 and second connection portion 143) of the first connection portion 143, the second connection portion 145, the third connection portion 147, and the fourth connection portion 149 of the holder 140 are used.
  • the inner magnet 170 applies a force to the contact member 150 toward the fixed body 110. Therefore, the movable body 120 can be stably supported with respect to the fixed body 110 with a small force.
  • the intersections of the first inner magnet 172 and the second inner magnet 174 in the direction in which the force is applied intersect at the optical axis P of the optical element 130. Therefore, the deviation of the optical axis P of the optical element 130 can be suppressed.
  • the movable body 120 is pushed from the inside in the radial direction to the outside in the radial direction with respect to the fixed body 110.
  • the first inner magnet 172 applies a force to the first contact member 152 toward the fixed body 110.
  • the third contact member 156 remains fixed to the holder 140.
  • FIG. 6C shows the first contact member 152, the first inner magnet 172, the first outer magnet 162, and the third contact member 156, the second contact member 154 and the second inner magnet shown in FIG. 6A are shown.
  • the inner magnet 170 applies a force to the contact member 150 toward the fixed body 110, it is possible to prevent the movable body 120 from being displaced with respect to the fixed body 110. Further, since the force applied from the movable body 120 side to the fixed body 110 is weak, the movable body 120 can be smoothly moved with respect to the fixed body 110. It was
  • first contact member 152 and 158 of the first contact member 152, the second contact member 154, the third contact member 156, and the fourth contact member 158 of the movable body 120 are used.
  • the second contact member 154) is exerted by the inner magnet 170, while the other two contact members (third contact member 156 and fourth contact member 158) are not forceed by the inner magnet 170. Therefore, the resistance of the movable body 120 to the fixed body 110 can be reduced, and the driving power for driving the movable body 120 can be reduced.
  • FIGS. 9A to 9C are partially enlarged portions of the optical unit 100.
  • the vicinity of the first connection portion 143 of the holder 140 is enlarged. It was
  • the distance (length) along the radial direction R between the first connection portion 143 of the holder 140 and the fixed body 110 is La.
  • the contact member 150 and the outer magnet 160 are arranged radially inward without arranging the inner magnet 170, the radial inner portion of the contact member 150 comes into contact with the radial inner side surface of the through hole 140q.
  • the length of the contact member 150 protruding from the holder 140 is Lb, and the length Lb is smaller than the length La.
  • the difference between the length Lb and the length La is shown as ⁇ L. It was
  • FIG. 9B shows the optical unit 100 before the movable body 120 is inserted into the fixed body 110.
  • the inner magnet 170 is arranged in the accommodating portion 140r.
  • the contact member 150 in which the outer magnet 160 is arranged moves radially outward along the through hole 140q.
  • the length of the contact member 150 protruding from the holder 140 when the contact member 150 moves outward in the radial direction to the maximum is Lc, and the length Lc is larger than the length La.
  • FIG. 9C shows an optical unit 100 after the movable body 120 is inserted into the fixed body 110.
  • the movable body 120 is inserted into the fixed body 110.
  • the distance (interval distance) along the radial direction R between the first connection portion 143 of the holder 140 and the fixed body 110 is the length La
  • the length of the contact member 150 protruding from the holder 140.
  • the contact member 150 is pushed inward in the radial direction so that the contact member 150 becomes La.
  • the contact member 150 does not come into contact with the radial inner side surface of the through hole 140q, and the distance (length) between the contact member 150 and the radial inner side surface of the through hole 140q is ⁇ L.
  • the amount of protrusion (length La) of the contact member 150 protruding from the holder 140 is such that the contact member 150 faces the holder 140. It is shorter than the distance (Lb) between the fixed body 110 and the holder 140 along the protruding direction, and the distance (Lb) is when the contact member 150 is located on the outermost side in the holder 140.
  • the contact member 150 is smaller than the protrusion amount (Lc) protruding from the holder 140.
  • the contact member 150 has a cylindrical portion, but the present embodiment is not limited to this.
  • the contact member 150 may have a rectangular parallelepiped portion.
  • the contact member 150 may have a spherical shape. It was
  • the smartphone 200 is shown in FIG. 1 as an example of the use of the optical unit 100 of the present embodiment, the use of the optical unit 100 is not limited to this.
  • the optical unit 100 is suitably used as a digital camera or a video camera.
  • the optical unit 100 may be used as a part of a drive recorder.
  • the optical unit 100 may be mounted on a camera for a flying object (eg, a drone). It was
  • Optical unit 110 Fixed body 120 . Movable body 130 . Optical element 140 . Holder 150 . Contact member 160 . Outer magnet 170 . Inner magnet

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Abstract

La présente invention concerne une unité optique qui est pourvue d'un corps fixe et d'un corps mobile qui est supporté de manière oscillante par rapport au corps fixe ; le corps mobile comprend un élément optique qui comporte un axe optique, un support dans lequel l'élément optique est inséré, un élément de contact qui est disposé sur le support et qui est en contact avec le corps fixe, des aimants extérieurs qui sont disposés sur l'élément de contact, et des aimants intérieurs qui correspondent aux aimants extérieurs et qui sont positionnés plus près de l'axe optique de l'élément optique que les aimants extérieurs, les polarités des régions qui forment des paires d'aimants extérieurs et d'aimants intérieurs étant identiques les unes aux autres.
PCT/JP2020/048293 2020-06-30 2020-12-23 Unité optique WO2022004011A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007041455A (ja) * 2005-08-05 2007-02-15 Matsushita Electric Ind Co Ltd 光学装置の像振れ補正装置
JP2019015847A (ja) * 2017-07-06 2019-01-31 日本電産サンキョー株式会社 振れ補正機能付き光学ユニット
JP2019174790A (ja) * 2018-03-26 2019-10-10 日本電産サンキョー株式会社 振れ補正機能付き光学ユニット
WO2019221021A1 (fr) * 2018-05-15 2019-11-21 日本電産サンキョー株式会社 Unité optique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007041455A (ja) * 2005-08-05 2007-02-15 Matsushita Electric Ind Co Ltd 光学装置の像振れ補正装置
JP2019015847A (ja) * 2017-07-06 2019-01-31 日本電産サンキョー株式会社 振れ補正機能付き光学ユニット
JP2019174790A (ja) * 2018-03-26 2019-10-10 日本電産サンキョー株式会社 振れ補正機能付き光学ユニット
WO2019221021A1 (fr) * 2018-05-15 2019-11-21 日本電産サンキョー株式会社 Unité optique

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