JP2009198948A - Lens driving device and camera device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens driving device that can be made much smaller in radial shape, and a camera device using the lens driving device. <P>SOLUTION: The lens driving device is provided with: a lens holder 11 holding a lens; first and second magnets 31, 32 with like-poles opposed facing an optical axis direction (a); a coil 23 wound around the optical axis of the lens and arranged to cross the opposed space of the first and second magnets 31, 32; and yoke bodies 41, 42 holding the first and second magnets 31, 32 and the coil 23 from the optical axis direction (a) and covering them from the outside around the optical axis of the lens. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lens driving device and a camera device, and more particularly to a lens driving device having a voice coil motor type driving source and a camera device having the lens driving device.

2. Description of the Related Art Conventionally, there is a lens driving device for driving a zoom lens or an autofocus lens used in a digital camera or a camera built in a mobile phone. As this lens driving device, a coil having a fixed relationship with a lens holding member for holding a lens is arranged in a magnetic field by a magnet, and in this state, a driving current is passed through the coil to generate a force acting on the coil. The lens holding member is driven by force.
Japanese Patent Laying-Open No. 2007-271878 (FIG. 1)

  By the way, in such a conventional lens driving device, a coil is wound around a cylindrical lens holding member that holds a lens therein, and this coil is sandwiched from a radial direction (lens radial direction) by a magnet and a yoke. The magnetic circuit formed by the magnet and the yoke is configured so that the magnetic flux crosses the coil in the radial direction.

  However, in the configuration in which the coil is sandwiched between the magnet and the yoke from the radial direction, there is a problem that the outer shape of the entire lens driving device cannot be avoided in the radial direction of the lens (radial direction).

  The present invention has been made in view of such problems, and an object of the present invention is to provide a lens driving device capable of further reducing the radial shape and a camera device using the lens driving device.

  The lens driving device of the present invention includes a lens holder for holding a lens, first and second magnets having the same poles facing each other in the optical axis direction of the lens, and wound around the optical axis of the lens. And sandwiching the first and second magnets and the coil from the direction of the optical axis, and surrounding the optical axis of the lens. And a yoke body covering from the outside.

  According to the lens driving device, the size in the radial direction can be further reduced by disposing the magnet in the optical axis direction of the lens as compared with the case where the coil is sandwiched from the lens radial direction by the magnet and the yoke. it can.

  In the lens driving device, it is preferable that the coil is directly wound around the lens holder. In this case, since the yoke body is eliminated between the lens holder and the coil, the size in the radial direction can be reduced accordingly. In addition, the configuration in which the coil is directly wound around the lens holder can reduce the number of parts compared to the case where a separate part for winding the coil is provided.

  Further, in the lens driving device, the yoke body has an opening at the central portion that opens along the outer shape of the lens holder around the optical axis of the lens, and the outer shape around the optical axis has a square shape. It is preferable that the first and second magnets have a quadrilateral shape that follows the quadrangular shape of the yoke body, and are housed in the yoke body. In this case, since the outer shape of the first and second magnets is a square shape, the number of magnetic lines acting on the coil is increased at the corners of the square shape because the area of the magnet is increased. As a result, a sufficient driving force can be generated for the lens holder.

  In the lens driving device, it is preferable that the first and second magnets are disposed at corners of a square shape of the yoke body. In this case, a sufficient driving force can be obtained by increasing the area of the magnet at the corners of the square shape.

  The lens driving device of the present invention includes a lens holder for holding a lens, first and second magnets having the same poles facing each other in the optical axis direction of the lens, and wound around the optical axis of the lens. And a coil disposed across the opposing space of the first and second magnets, the coil from the center of the opposing space of the first and second magnets from the optical axis of the lens It is characterized by being displaced in the direction of moving away or the direction of approaching.

  According to the lens driving device, the size of the radial direction can be further reduced by disposing the magnet so as to face the optical axis direction of the lens as compared with the case where the magnet is arranged facing the radial direction of the lens. . In addition, a coil in which the magnetic lines of force that collide with each other in the facing space of the first and second magnets and change their direction in the radial direction (outward and inward) of the lens are shifted from the center of the facing space. This traverses in the radial direction, so that a sufficient driving force for the lens holder can be generated. Thus, the size in the radial direction can be further reduced as compared with the case where the yoke body is used.

  In the lens driving device, it is preferable that the coil is directly wound around the lens holder. In this case, since the yoke body is eliminated between the lens holder and the coil, the size in the radial direction can be reduced accordingly. In addition, the configuration in which the coil is directly wound around the lens holder can reduce the number of parts compared to the case where a separate part for winding the coil is provided.

  The camera device of the present invention is wound around the optical axis of the lens, a lens holder that holds the lens, first and second magnets having the same poles facing each other in the optical axis direction of the lens, and , Sandwiching the coil disposed across the opposing space of the first and second magnets, the first and second magnets and the coil from the optical axis direction, and around the optical axis of the lens A yoke body that covers from the outside and an image pickup device that receives and photoelectrically converts light incident through the lens are provided.

  According to the camera device described above, the size of the lens drive mechanism portion in the radial direction is further reduced by disposing the magnet in the optical axis direction of the lens as compared with the case in which the magnet is disposed in the radial direction of the lens. can do.

  ADVANTAGE OF THE INVENTION According to this invention, the lens drive device which can make the shape of radial direction still smaller, and the camera apparatus using this lens drive device can be provided.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
(First embodiment)
FIG. 1 is a perspective view of a lens driving device according to a first embodiment of the present invention.

  In FIG. 1, a lens driving device 10 includes a lens holder 11 for holding the lens in a state where the optical axis of a lens (not shown) is directed in the vertical direction (arrow a direction) in the figure, and the lens holder. It is mainly comprised from the drive mechanism part 12 for driving in the optical axis direction shown by the arrow a.

  As shown in FIG. 2, the lens holder 11 includes a cylindrical main body 21 for holding a lens (not shown) therein, and a flat coil base 22 integrally formed in a bowl shape on the outer periphery thereof. And a coil 23 in which a conducting wire is wound along a hook-shaped end portion that forms the outer peripheral surface of the coil base 22. As described above, the coil base 22 is integrally formed with the lens holder 11, so that the coil 23 is directly provided on the lens holder 11.

  The coil base 22 is formed so as to circulate around the cylindrical outer peripheral portion of the main body portion 21, whereby the coil 23 wound around the outer peripheral surface of the coil base 22 extends along the periphery of the main body portion 21. Thus, a conductive wire is wound around the main body 21. That is, the coil 23 is provided so as to go around the optical axis of the lens held by the lens holder 11. Thus, when a current is passed through the coil 23, the current flows in a direction that circulates around the body portion 21.

  FIG. 3 is a plan view of the lens holder 11. As shown in FIG. 3, the coil base 22 has four hook-like portions 22a and 22b along the outer peripheral surface of the cylindrical main body portion 21. As shown in FIG. , 22c and 22d. The coil base 22 is formed in a substantially rectangular plane shape as a whole by the four flange portions 22a to 22d. As a result, a relatively large area is formed between the coil 23 and the lens holder 21 in the four hook-shaped portions 22a to 22d.

  As shown in FIG. 4, with respect to the coil 23 having such a configuration, magnets 31 and 32 are provided so as to sandwich the coil 23 with a gap from the optical axis direction (arrow a direction) of the lens held by the lens holder 11. It is configured to face each other. 4 is an exploded perspective view of the lens driving device 10. As shown in FIG. 4, the magnet 31 has an opening 33 having a diameter larger than the outer diameter of the main body 21 of the lens holder 11. As shown in FIG. As a whole, the lens holder 11 is formed in a substantially flat plate shape having the same rectangular shape as the outer shape including the flanges 22a to 22d. The main body 21 of the lens holder 11 is inserted into the opening 33 of the magnet 31 so that the magnet 31 is opposed to one surface of the flanges 22a to 22d with a slight gap. The The magnet 32 also has an opening 34 having a diameter larger than the outer diameter of the main body 21 of the lens holder 11 in the same manner as the magnet 31, and the flanges 22 a to 22 d of the lens holder 11 as a whole. It is formed in a flat plate shape having substantially the same rectangular shape as the outer shape to be included. The main body 21 of the lens holder 11 is inserted into the opening 34 of the magnet 32 so that the magnet 32 faces the other surfaces of the flanges 22a to 22d with a slight gap therebetween. The

  And with respect to the lens holder 11 in which the magnets 31 and 32 are arranged, the lens holder 11 and the magnets 31 and 32 are provided by a yoke 41 that covers the lens holder 11 from the magnet 31 side and a yoke 42 that covers the magnet holder 32 from the magnet 32 side. Is configured to be accommodated in the yokes 41 and 42. The yokes 41 and 42 also cover the magnets 31 and 32 and the coil 23 from the outside in the radial direction of the lens held by the lens holder 11. The yokes 41 and 42 are formed with openings 43 and 44 having a diameter larger than the outer diameter of the main body 21 of the lens holder 11, and the main body 21 of the lens holder 11 covered with the yokes 41 and 42. Is exposed to the outside through these openings 43 and 44. The yokes 41 and 42 are made of a magnetic material, and constitute a magnetic circuit for magnetic flux generated by the magnets 31 and 32.

  A leaf spring member 51 is fixed to the upper surface 45 of one yoke 41. The leaf spring member 51 connects the fixing portion 52 fixed to the upper surface 45 of the yoke 41, the engaging portion 53 engaged with the main body portion 21 of the lens holder 11, and the fixing portion 52 and the engaging portion 53. And an arm portion 54 to be used. The engaging portion 53 is supported by the arm portion 54 so as to be movable in the optical axis direction (arrow a direction) of the lens. The lens holder 11 engaged with the engaging portion 53 is attached to the arm portion 54. It is supported by a force corresponding to the elastic force.

  Further, a lower case 71 in which a leaf spring member 61 is inserted is fixed to the lower surface of the other yoke 42. An opening 72 having a diameter larger than the outer diameter of the main body 21 of the lens holder 11 is formed in the lower case 71, and the main body 21 of the lens holder 11 is inserted into the opening 72. The lower case 71 is fixed to the lower surface portion 46 of the yoke 42. A leaf spring member 61 is provided in the opening 72 of the lower case 71 by insert molding. The leaf spring member 61 is temporarily supported by the engaging portion 63 engaged with the main body portion 21 of the lens holder 11 and the inner peripheral surface of the opening 72, and the arm that supports the engaging portion 63 by the other end portion. Part 64. The engaging portion 63 is supported by the arm portion 64 so as to be movable in the optical axis direction (arrow a direction) of the lens, and the lens holder 11 engaged with the engaging portion 63 is connected to the arm portion 64. It is supported by a force corresponding to the elastic force.

  Thus, the lens holder 11 is urged to a certain position by the elastic force of the arm portions 54 and 64, and the optical axis direction (arrow) of a lens (not shown) provided inside the main body portion 21 of the lens holder 11 is shown. (a direction).

  An electrode support portion 95 in which external connection electrodes 81 and 82 are insert-molded is fixed to the lower surface portion of the lower case 71. The external connection electrodes 81 and 82 and the coil 23 are electrically connected by coil connection terminals 96 and 97. Thus, by supplying a predetermined drive current via the external connection electrodes 81 and 82, the drive current is supplied to the coil 23. The electrode support portion 95 is formed in an annular shape, and a space is provided between a lens (not shown) supported inside the main body portion 21 of the lens holder 11 and the outside via the inside of the annular shape. Is formed.

  A top cover 98 is fixed at the top of the lens driving device 10. The top cover 98 is fixed to the upper surface 45 of the yoke 41 with the fixing portion 52 of the leaf spring member 51 interposed between the top cover 98 and the upper surface 45 of the yoke 41. An opening 99 having a diameter larger than the outer diameter of the main body 21 of the lens holder 11 is formed in the top cover 98, and is supported inside the main body 21 of the lens holder 11 through the opening 99. External light is incident on a lens (not shown).

  Further, as shown in FIG. 5, a substrate 101 on which an imaging element (CCD: Charge-Coupled Device) 102 is mounted is attached to the lower surface of the lens driving device 10, and the camera device 100 is configured as a whole. The The light incident on the lens of the lens driving device 10 is received by the image sensor 102 of the substrate 101 and photoelectrically converted to be output as an image signal.

  As shown in FIG. 4, in the lens driving device 10, the lens holder 11 includes the arm portion 54 of the leaf spring member 51 and the arm portion 64 of the leaf spring member 61. Therefore, the focus adjustment of the lens can be performed by moving the lens.

  The driving force for moving the lens in the optical axis direction (arrow a direction) is formed of a coil 23, magnets 31 and 32 sandwiching the coil 23 from the optical axis direction (arrow a direction), and a magnetic material. 23 and yokes 41 and 42 covering magnets 31 and 32.

  That is, FIG. 6 is a cross-sectional view taken along the line XX of FIG. 1, and magnets 31 and 32 provided so as to sandwich the coil 23 from the lens optical axis direction (arrow a direction) are the same. The poles are arranged to face each other with the coil 23 therebetween. The yokes 41 and 42 are arranged so as to cover the coil 23 and the magnets 31 and 32. In this case, since the magnets 31 and 32 are disposed at positions where the coil 23 is sandwiched from above and below in the drawing, the yokes 41 and 42 are also disposed so as to sandwich the magnets 31 and 32 from above and below. Further, since the main body 21 of the lens holder 11 is disposed inside the magnets 31 and 32 and the coil 23, the yokes 41 and 42 are connected to the magnets 31, 32 and the outer side from the outer side opposite to the main body 21. It arrange | positions so that the coil 23 may be covered.

  With such an arrangement, the magnets 31 and 32, the coil 23, and the yokes 41 and 42 form a magnetic circuit.

  Here, the formation state of the magnetic circuit will be described. 7 is a perspective view showing an arrangement state of the lens holder 11 and the magnets 31 and 32, FIG. 8 is a cross-sectional view taken along the line XX in FIG. 7, and FIG. 9 is a Y view in FIG. It is sectional drawing which shows a Y line for a cross section.

  As shown in FIG. 7, the main body 21 of the lens holder 11 is formed in a cylindrical shape, whereas the coil base 22 on which the coil 23 is formed has a rectangular shape as a whole by four hook-shaped portions 22 a to 22 d. It is formed into a shape. Therefore, the outer shape of the coil 23 wound around the coil base 22 and the magnets 31 and 32 that sandwich the coil 23 with a gap from above and below are similarly formed in a square shape.

  Thus, the main body 21 of the lens holder 11 is formed in a cylindrical shape, and the magnets 31 and 32 in which openings for inserting the lens holder 11 are formed are formed in a quadrangular shape. The area of the coil base 22 is increased in the portion facing the flanged portions 22a to 22d (FIG. 9), and the area not facing the flanged portions 22a to 22d is decreased (FIG. 8).

  As a result, as shown in FIG. 8, in the portion where the areas of the magnets 31 and 32 facing the coil 23 are small, the number of magnetic lines of force B crossing the coil 23 is reduced. On the other hand, as shown in FIG. In a portion where the areas of the magnets 31 and 32 facing the coil 23 are large (a square corner that is the outer shape of the magnets 31 and 32), the number of magnetic lines B crossing the coil 23 increases. Thereby, in the part in which the hook-shaped portions 22a to 22d are provided, a large force is generated when a drive current is supplied to the coil 23 because many lines of magnetic force B cross the coil 23.

  In the case of the present embodiment, since the same polarity (for example, N poles) of the magnets 31 and 32 are opposed to each other, the magnet 31 and 32 have advanced in the optical axis direction (arrow a direction) of the lens. The magnetic field lines B collide with each other, and their directions change in a direction (a lens radial direction) substantially orthogonal to the optical axis direction (arrow a direction) of a lens (not shown). Then, the magnetic field line B whose direction has changed traverses the coil 23 in the radial direction, and then reaches the S pole of the magnet 31 via the yoke 41 and reaches the S pole of the magnet 32 via the yokes 41 and 42.

  As described above, the magnets 31 and 32 have the same poles (N poles) facing each other, so that the lines of magnetic force B of the coil 23 are perpendicular to the optical axis direction (arrow a direction) of the lens. Therefore, a force acts on the coil 23 in the direction of the optical axis of the lens (in the direction of arrow a). As a result, the coil 23 moves in the optical axis direction of the lens in the movable range between the magnets 31 and 32, and the lens holder 11 that is in a fixed relationship with the coil 23 and the lens supported thereby move similarly. .

  Thus, when a driving current is applied to the coil 23, the lens supported by the lens holder 11 is moved in the optical axis direction, and focus adjustment and zooming of the lens can be performed. The magnets 31 and 32 may be configured so that the south poles face each other instead of the configuration in which the north pole stations face each other.

  10 is a view showing a state in which the leaf spring member 51 is attached to the upper surface of the yoke 41, and the fixing portion 52 of the leaf spring member 51 is fixed to the upper surface of the yoke 41. The fixing portion 52 is shown in FIG. And an engaging portion 53 that is engaged with the main body portion 21 of the lens holder 11, and the engaging portion 53 is supported by the arm portion 54.

  Here, by applying an arbitrary current to the coil 23, a thrust is generated by the coil 23 and the magnets 31 and 32, and the lens holder 11 (lens) starts moving. On the other hand, the arm portion 54 of the leaf spring member 51 generates a repulsive force proportional to the spring constant according to the amount of movement. The movement of the lens holder 11 (lens) stops at a position where the generated thrust and the repulsive force are balanced. As a result, it is possible to keep the position of the lens holder 11 (lens) at an arbitrary position by energizing the coil 23 with an arbitrary amount of electricity.

  The spring constant of the arm portion 54 is determined by the length of the arm portion 54. In this embodiment, a part (P1, P2 or P3) of the arm portion 54 is attached to the upper surface of the yoke 41 using a laser or the like. By fixing, the length of the arm portion 54 is adjusted, and the spring constant is adjusted.

  As described above, the spring constant of the arm portion 54 affects the movement amount of the lens holder 11 when the coil 23 is energized. If the spring constant is high, the lens movement amount necessary for focusing cannot be obtained. On the other hand, if the spring constant is low, the amount of movement of the lens with respect to the current value is too steep, making it difficult to adjust the focus position. Also, since there is a manufacturing variation in the magnet that generates the thrust of the lens, the spring constant is adjusted by fixing the arm portion 54 to the upper surface of the yoke 41 at an arbitrary position as in the present embodiment. Thus, the adjustment of the focus position can be facilitated, and variations in the magnets 31 and 32 can be absorbed by adjusting the spring constant of the arm portion 54.

  Thus, according to the above configuration, the magnets 31 and 32 are arranged opposite to the coil 23 in the optical axis direction (arrow a direction) of the lens, so that the magnets 31 and 32 are arranged in the radial direction of the lens. The size in the radial direction can be further reduced as compared with the conventional arrangement. In particular, it is difficult to make the magnet sufficiently thin due to its material, and according to the configuration of the present embodiment, the magnets 31 and 32 are not arranged in the radial direction with respect to the coil 23. The thickness of the magnets 31 and 32 does not affect the size of the lens driving device 10 in the radial direction. Further, instead of reducing the outer shape in the radial direction, the diameter of the lens can be increased.

  Further, the yokes 41 and 42 are provided only at a position where the coil 23 and the magnets 31 and 32 are covered from the vertical direction (arrow a direction) and a position where they are covered from the outside in the radial direction. Compared to the configuration in which the magnets 31 and 23 are also covered from the inside in the radial direction, the thickness can be reduced.

(Second Embodiment)
In the first embodiment described above, the case where the yokes 41 and 42 are used has been described. However, the present invention is not limited to this, and a configuration in which the yokes 41 and 42 are not used may be employed. In this case, the position of the coil 23 is arranged so as to be shifted outward or inward from the center of the facing space of the magnets 31 and 32.

  That is, FIG. 11 is a cross-sectional view showing an arrangement state of the lens holder 11, the magnets 31 and 32, and the coil 23 of the lens driving device according to the second embodiment. Note that the lens driving device according to the second embodiment is not provided with the yokes 41 and 42 and the coil 23 according to this in comparison with the lens driving device 10 according to the first embodiment. The difference is that the position is shifted from the center of the magnet facing space to the outside (or inside), and the other configuration is the same as that of the lens driving device 10. Accordingly, in FIG. 11, the same reference numerals are given to the same parts as those of the lens driving device 10 of the first embodiment, and the duplicated explanation is omitted.

  As shown in FIG. 11, in the configuration in which the yoke is not provided, the magnetic lines B of the magnets 31 and 32 arranged so that the same poles (for example, N poles) face each other are opposed to the magnets 31 and 32, respectively. Then, the direction is changed from the center position of the opposing space of the magnets 31 and 32 to the outside and the inside in the radial direction of the lens.

  The coil 23 of the present embodiment is disposed at a position shifted outward from the center of the facing space of the magnets 31 and 32. Thereby, the magnetic force lines B passing through the coil 23 are mainly in the optical axis direction (arrow a direction) and the outer direction orthogonal thereto, and suppress the state where the magnetic force lines B going inward and outward are mixed and cancel each other. Can do.

  In addition, in FIG. 11, although the case where the coil 23 was arrange | positioned in the position shifted | deviated outward from the center of the opposing space of the magnets 31 and 32 was described, it is not restricted to this, As shown in FIG. It may be arranged at a position shifted inward. In this case, the magnetic force lines B passing through the coil 23 are mainly in the optical axis direction (the direction of the arrow a) and the inner direction orthogonal thereto, and in this case, the magnetic force lines B directed inward and outward are mixed. And canceling each other out.

  Thus, according to the above configuration, the magnets 31 and 32 are arranged opposite to the coil 23 in the optical axis direction (arrow a direction) of the lens, so that the magnets are arranged in the radial direction (radial direction). Compared to the conventional configuration, the size in the radial direction can be further reduced. In particular, it is difficult to make the magnet sufficiently thin due to its material, and according to the configuration of the present embodiment, the magnets 31 and 32 are not arranged in the radial direction with respect to the coil 23. Therefore, the thickness of the magnets 31 and 32 does not affect the radial size of the lens driving device 10.

  In addition, by arranging the coil 23 to be shifted in the radial direction (outward or inward) from the center of the opposing space of the magnets 31 and 32, the magnetic lines of force generated from the first and second magnets 31 and 32 are the first. In the space where the second magnets 31 and 32 face each other, they collide with each other and change the direction in the radial direction (outward and inward) of the lens, thereby crossing the coil in the radial direction. Thereby, sufficient driving force for the lens holder can be generated. Thus, the size in the radial direction can be further reduced as compared with the case where the yokes 41 and 42 (FIGS. 8 and 9) are used.

(Other embodiments)
In the above-described embodiment, the case where the magnets 31 and 32 are provided over the entire outer periphery of the main body 21 of the lens holder 11 has been described. However, the present invention is not limited to this. For example, as shown in FIG. Of the magnets 31 and 32, only portions (corner portions) facing the upper and lower sides of the flanges 22a, 22b, 22c, and 22d (FIG. 3) provided on the outer peripheral portion of the lens holder 11 may be used. Even if it does in this way, sufficient force for moving the lens holder 11 can be generated because the magnet area | region which opposes the bowl-shaped parts 22a, 22b, 22c, and 22d has sufficient area.

1 is an overall perspective view of a lens driving device according to a first embodiment of the present invention. It is a perspective view which shows the lens holder of the lens drive device, and the coil provided in this lens holder. It is a top view which shows the lens holder of the lens drive device, and the coil provided in this lens holder. It is a disassembled perspective view of a lens drive device. It is a side view which shows the camera apparatus which has a lens drive device. It is sectional drawing which shows the cross section of a lens drive device. It is a perspective view which shows the lens holder, coil, and magnet of a lens drive device. It is sectional drawing with which it uses for description of the generation | occurrence | production principle of the driving force of a lens holder. It is sectional drawing with which it uses for description of the generation | occurrence | production principle of the driving force of a lens holder. It is a perspective view which shows the leaf | plate spring member which supports a lens holder. It is sectional drawing with which it uses for description of the generation principle of the driving force of the lens drive device which concerns on 2nd Embodiment. It is sectional drawing with which it uses for description of the generation principle of the driving force of the lens drive device which concerns on 2nd Embodiment. It is a perspective view which shows the structure of the magnet of the lens drive device which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lens drive device 11 Lens holder 12 Drive mechanism part 21 Main body part 22 Coil base 22a, 22b, 22c, 22d Saddle-shaped part 23 Coil 31, 32 Magnet 41, 42 Yoke 51, 61 Leaf spring member 52 Fixing part 53, 63 Engagement Joint part 54, 64 Arm part 71 Lower case 81, 82 External connection electrode 96, 97 Coil connection terminal 98 Top cover 99 Opening part

Claims (7)

A lens holder for holding the lens;
First and second magnets having the same poles facing each other in the optical axis direction of the lens;
A coil wound around the optical axis of the lens and disposed across the opposing space of the first and second magnets;
A lens driving device comprising: a yoke body that sandwiches the first and second magnets and the coil from the optical axis direction and covers from the outside around the optical axis of the lens.   The lens driving device according to claim 1, wherein the coil is directly wound around the lens holder. The yoke body has an opening that opens along the outer shape around the optical axis of the lens of the lens holder at the center, and the outer shape around the optical axis is a square shape,
2. The lens driving device according to claim 1, wherein the first and second magnets have a rectangular outer shape that conforms to the rectangular shape of the yoke body, and are housed in the yoke body.   4. The lens driving device according to claim 3, wherein the first and second magnets are arranged at corners of a square shape of the yoke body. 5. A lens holder for holding the lens;
First and second magnets having the same poles facing each other in the optical axis direction of the lens;
A coil wound around the optical axis of the lens and disposed across the opposing space of the first and second magnets, and the coil is an opposing space of the first and second magnets. The lens driving device is arranged so as to be shifted from the center of the lens in a direction away from or closer to the optical axis of the lens.   The lens driving device according to claim 1, wherein the coil is directly wound around the lens holder. A lens holder for holding the lens;
First and second magnets having the same poles facing each other in the optical axis direction of the lens;
A coil wound around the optical axis of the lens and disposed across the opposing space of the first and second magnets;
A yoke body that sandwiches the first and second magnets and the coil from the optical axis direction and covers from the outside around the optical axis of the lens;
A camera device comprising: an image pickup device that receives and photoelectrically converts light incident through the lens.

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