JP2011085666A - Lens driving device - Google Patents

Lens driving device Download PDF

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JP2011085666A
JP2011085666A JP2009236625A JP2009236625A JP2011085666A JP 2011085666 A JP2011085666 A JP 2011085666A JP 2009236625 A JP2009236625 A JP 2009236625A JP 2009236625 A JP2009236625 A JP 2009236625A JP 2011085666 A JP2011085666 A JP 2011085666A
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lens
coil
magnet
optical axis
driving device
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JP5513834B2 (en
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Chao-Chang Hu
朝彰 胡
Fu-Yuan Wu
富源 呉
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TDK Taiwan Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact lens driving device with a simple configuration. <P>SOLUTION: The lens driving device has: a lens holder 6 including a first coil 4 arranged on an outer periphery of a lens 2; a magnet holder 8 configured to fix a magnet 22 having a first surface 22a facing the first coil 4; springs 10f and 10b supporting the lens holder 6 so as to couple the lens holder 6 with the magnet holder 8 and also so that the lens holder 6 is moved in an optical axis direction relative to the magnet 22; and a base member 30 configured so that a second coil 34 is fixed to face a second surface 22b perpendicular to the first surface 22a of the magnet 22. A lens holding unit 7 having the lens holder 6, the magnet 22, the magnet holder 8 and the springs 10f and 10b is held so as to be relatively movable in a direction perpendicular to an optical axis relative to the base member 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、たとえば携帯電話のカメラモジュールなどに好適に用いられるレンズ駆動装置に関する。   The present invention relates to a lens driving device suitably used for a camera module of a mobile phone, for example.

携帯電話のカメラモジュール等に好適に用いられるレンズ駆動装置では、オートフォーカス（ＡＦ）動作等を行うことができるように、レンズホルダを、光軸方向に配置された一対のリング状スプリング板で挟み込んでいる（特許文献１参照）。   In a lens driving device suitably used for a mobile phone camera module or the like, the lens holder is sandwiched between a pair of ring-shaped spring plates arranged in the optical axis direction so that an autofocus (AF) operation or the like can be performed. (See Patent Document 1).

しかしながら、従来技術のようにコイルと永久磁石とから成る駆動機構では、ＡＦ動作しか行うことができない。ＡＦ動作のための駆動機構以外の駆動要素（たとえばブレ補正など）を駆動装置に組み込むためには、ＡＦ用の永久磁石とは別に、他の駆動要素用の永久磁石を組み込む必要があり、構成が複雑になり駆動装置が大型化してしまう虞があった。   However, a drive mechanism composed of a coil and a permanent magnet as in the prior art can only perform an AF operation. In order to incorporate a driving element other than the driving mechanism for AF operation (for example, shake correction) into the driving device, it is necessary to incorporate a permanent magnet for another driving element separately from the permanent magnet for AF. However, there is a risk that the driving device becomes large.

特開２００４−２８００３１号公報JP 2004-280031 A

本発明は、このような実状に鑑みてなされ、その目的は、簡単な構成で小型化が可能なレンズ駆動装置を提供することである。   The present invention has been made in view of such a situation, and an object thereof is to provide a lens driving device that can be reduced in size with a simple configuration.

上記目的を達成するために、本発明に係るレンズ駆動装置は、
レンズの外周に配置された第１コイルを備えるレンズホルダと、
前記第１コイルに対向する第１面を持つマグネットを固定するマグネット保持部材と、
前記レンズホルダと前記マグネット保持部材とを連結するように、しかも前記レンズホルダを前記マグネットに対して光軸方向へ移動可能に支持するスプリングと、
前記マグネットの第１面に垂直な第２面に対向して第２コイルが固定されるベース部材とを有し、
前記レンズホルダと、前記マグネットと、前記マグネット保持部材と、前記スプリングとを有するレンズ保持ユニットを、前記ベース部材に対し光軸と垂直な方向に相対移動可能に保持してあることを特徴とする。 In order to achieve the above object, a lens driving device according to the present invention includes:
A lens holder comprising a first coil disposed on the outer periphery of the lens;
A magnet holding member for fixing a magnet having a first surface facing the first coil;
A spring that connects the lens holder and the magnet holding member and supports the lens holder so as to be movable in the optical axis direction with respect to the magnet;
A base member to which a second coil is fixed facing a second surface perpendicular to the first surface of the magnet;
A lens holding unit having the lens holder, the magnet, the magnet holding member, and the spring is held so as to be movable relative to the base member in a direction perpendicular to the optical axis. .

マグネットと第１コイルとの組み合わせにおいて、第１コイルに通電することにより、マグネットに対向する第１コイルには光軸方向に駆動力が発生し、第１コイルが装着されたレンズホルダが光軸方向に移動し、ＡＦ制御が可能になる。しかも、マグネットと第２コイルとの組み合わせにおいて、第２コイルに通電することにより、マグネットに対向する第２コイルには光軸と垂直な方向に駆動力が発生し、マグネットを有するレンズ保持ユニットが光軸と垂直な方向に移動し、ブレ補正制御が可能になる。このように、第１面と第２面とが垂直に構成されるマグネットが、ＡＦ制御用マグネットとブレ補正制御用マグネットを兼ねることにより、部品点数を削減することができ、簡単な構成でＡＦ制御とブレ補正制御を行うことが可能となる。しかも、レンズ駆動装置の小型化にも貢献することができる。   In the combination of the magnet and the first coil, when the first coil is energized, a driving force is generated in the optical axis direction in the first coil facing the magnet, and the lens holder on which the first coil is mounted is connected to the optical axis. It moves in the direction and AF control becomes possible. In addition, in the combination of the magnet and the second coil, when the second coil is energized, the second coil facing the magnet generates a driving force in a direction perpendicular to the optical axis, and the lens holding unit having the magnet It moves in a direction perpendicular to the optical axis, and blur correction control becomes possible. As described above, the magnet in which the first surface and the second surface are configured vertically serves as both an AF control magnet and a shake correction control magnet, so that the number of parts can be reduced. Control and blur correction control can be performed. In addition, the lens drive device can be reduced in size.

前記スプリングは、光軸方向の前方側で前記レンズホルダを支持する第１スプリングと、光軸方向の後方側で前記レンズホルダを支持する第２スプリングとで構成されることが好ましい。前記第２スプリングは、前記マグネットの第２面と前記第２コイルとが対向する隙間位置を避けるように配置されていることが好ましい。前記スプリングは、前記第１コイルと電気的に接続されていることが好ましい。   Preferably, the spring includes a first spring that supports the lens holder on the front side in the optical axis direction, and a second spring that supports the lens holder on the rear side in the optical axis direction. The second spring is preferably disposed so as to avoid a gap position where the second surface of the magnet and the second coil face each other. The spring is preferably electrically connected to the first coil.

第１コイルと電気的に接続される第２スプリングが、マグネットの第２面と第２コイルとが対向する隙間位置を避けるように配置されるために、マグネットの第２面と第２コイルとの間の磁束を乱すことがない。したがって、正確にブレ補正制御を行うことが可能になる。   Since the second spring electrically connected to the first coil is disposed so as to avoid a gap position where the second surface of the magnet and the second coil face each other, the second surface of the magnet and the second coil The magnetic flux between is not disturbed. Therefore, it is possible to perform blur correction control accurately.

前記ベース部材と前記レンズ保持ユニットとがサスペンションワイヤにより連結され、前記レンズ保持ユニットが前記ベース部材に対して光軸と直交する方向へ移動可能になっていても良い。前記スプリングと前記サスペンションワイヤとで前記第１コイルへの給電を行っても良い。   The base member and the lens holding unit may be connected by a suspension wire, and the lens holding unit may be movable in a direction perpendicular to the optical axis with respect to the base member. The spring and the suspension wire may supply power to the first coil.

レンズ保持ユニットは小型軽量なので、ベース部材の４隅に設けたサスペンションワイヤでレンズ保持ユニットを容易に保持可能である。しかも、第２コイルとの位置関係において、ベース部材の４隅にサスペンションワイヤが配置されることにより、レンズ保持ユニットを光軸と直交する方向に効率的に駆動制御を行うことが可能になる。   Since the lens holding unit is small and light, the lens holding unit can be easily held by suspension wires provided at the four corners of the base member. In addition, the suspension wires are arranged at the four corners of the base member in the positional relationship with the second coil, so that the lens holding unit can be efficiently driven and controlled in the direction perpendicular to the optical axis.

前記レンズがオートフォーカス用レンズであり、ブレ補正レンズを兼ねていても良い。   The lens may be an autofocus lens and may also serve as a blur correction lens.

前記レンズがオートフォーカス用レンズであり、当該レンズとは別に、光軸に沿ってブレ補正用レンズが配置されていても良い。前記ブレ補正用レンズが、前記ベース部材に取り付けられていても良い。前記サスペンションワイヤが、前記ベース部材を、光軸と直交する方向に前記レンズ保持ユニットに対して移動可能に保持しても良い。   The lens may be an autofocus lens, and a blur correction lens may be disposed along the optical axis separately from the lens. The blur correction lens may be attached to the base member. The suspension wire may hold the base member movably with respect to the lens holding unit in a direction perpendicular to the optical axis.

図１は、本発明の第１実施形態に係るレンズ駆動装置の分解斜視図である。FIG. 1 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention. 図２Ａは、図１に示すレンズ駆動装置の断面図である。2A is a cross-sectional view of the lens driving device shown in FIG. 図２Ｂは、図２Ａに示す後方スプリングの平面図である。2B is a plan view of the rear spring shown in FIG. 2A. 図３は、本発明の第２実施形態に係るレンズ駆動装置の断面図である。FIG. 3 is a cross-sectional view of a lens driving device according to the second embodiment of the present invention. 図４は、本発明の第３実施形態に係るレンズ駆動装置の断面図である。FIG. 4 is a cross-sectional view of a lens driving device according to the third embodiment of the present invention. 図５は、本発明の第４実施形態に係るレンズ駆動装置の断面図である。FIG. 5 is a cross-sectional view of a lens driving device according to the fourth embodiment of the present invention. 図６は、本発明の第５実施形態に係るレンズ駆動装置の断面図である。FIG. 6 is a cross-sectional view of a lens driving device according to a fifth embodiment of the present invention. 図７は、本発明の第６実施形態に係るレンズ駆動装置の断面図である。FIG. 7 is a sectional view of a lens driving device according to the sixth embodiment of the present invention.

第１実施形態
図１、図２Ａ、図２Ｂに基づき、本発明の第１実施形態に係るレンズ駆動装置１について説明する。図１に示すように、レンズ駆動装置１は、レンズ保持ユニット７とベース部材３０とを有する。レンズ保持ユニット７とベース部材３０とは、図１に示すように組み付け可能になっており、ケース５によって組み付けられる。 First Embodiment A lens driving device 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1, 2A and 2B. As shown in FIG. 1, the lens driving device 1 includes a lens holding unit 7 and a base member 30. The lens holding unit 7 and the base member 30 can be assembled as shown in FIG.

図２Ａに示すように、撮像素子基板４４と撮像素子４２によって撮像素子ユニット４０が構成されている。撮像素子４２の光軸正方向には、レンズ２が配置されている。なお、実施形態の説明においては、図２Ａなどに示すように、撮影光軸Ｚ１に沿って、撮像素子４４からレンズ２側に向かう方向をＺ軸正方向とし、Ｚ軸に直交する方向をＸ軸方向およびＹ軸方向として説明を行う。Ｘ軸、Ｙ軸、Ｚ軸は、相互に垂直になっている。   As shown in FIG. 2A, an image sensor unit 40 is configured by the image sensor substrate 44 and the image sensor 42. The lens 2 is arranged in the positive direction of the optical axis of the image sensor 42. In the description of the embodiment, as shown in FIG. 2A and the like, the direction from the image sensor 44 toward the lens 2 along the imaging optical axis Z1 is the Z-axis positive direction, and the direction orthogonal to the Z-axis is X The description will be made with the axial direction and the Y-axis direction. The X axis, the Y axis, and the Z axis are perpendicular to each other.

図１に示すレンズ保持ユニット７は、図２Ａに示すように、レンズ２、ＡＦ用コイル４、マグネット保持部材８、前方スプリング１０ｆ、後方スプリング１０ｂ、永久磁石２２，２４を有している。   The lens holding unit 7 shown in FIG. 1 has a lens 2, an AF coil 4, a magnet holding member 8, a front spring 10f, a rear spring 10b, and permanent magnets 22 and 24, as shown in FIG. 2A.

図２Ａに示すように、マグネット保持部材８の側壁８ａの内側に対し、磁気異方性を有する永久磁石２２，２４が接着等により固定されており、永久磁石２２，２４の周辺に磁場を発生させる。永久磁石２２，２４は、光軸と平行な面に沿って第１面２２ａ，２４ａを有し、光軸と垂直な面に沿って第２面２２ｂ，２４ｂを有している。永久磁石２２の第１面２２ａと第２面２２ｂは相互に垂直になっており、永久磁石２４の第１面２４ａと第２面２４ｂは相互に垂直になっている。   As shown in FIG. 2A, permanent magnets 22 and 24 having magnetic anisotropy are fixed to the inside of the side wall 8a of the magnet holding member 8 by adhesion or the like, and a magnetic field is generated around the permanent magnets 22 and 24. Let The permanent magnets 22 and 24 have first surfaces 22a and 24a along a plane parallel to the optical axis, and have second surfaces 22b and 24b along a plane perpendicular to the optical axis. The first surface 22a and the second surface 22b of the permanent magnet 22 are perpendicular to each other, and the first surface 24a and the second surface 24b of the permanent magnet 24 are perpendicular to each other.

図２Ａに示すレンズ２の周囲には、ＡＦ用コイル４が配置されている。ＡＦ用コイル４は、永久磁石２２，２４の第１面２２ａ，２４ａと対向するように配置される。レンズ２は、複数のレンズ群から構成されていてもよいが、本実施形態では、説明を簡単にするために、１個のレンズで構成されるものとして説明を行う。   An AF coil 4 is disposed around the lens 2 shown in FIG. 2A. The AF coil 4 is disposed so as to face the first surfaces 22 a and 24 a of the permanent magnets 22 and 24. The lens 2 may be composed of a plurality of lens groups, but in the present embodiment, the description will be made assuming that the lens 2 is composed of one lens in order to simplify the description.

図２Ａに示すように、レンズ２とＡＦ用コイル４とにより、レンズホルダ６が構成されている。前方スプリング１０ｆおよび後方スプリング１０ｂは、レンズホルダ６とマグネット保持部材８とを連結するように配置されている。前方スプリング１０ｆおよび後方スプリング１０ｂは、可撓性を有する部材であり、少なくとも一方のスプリング１０ｆおよび１０ｂには、配線回路が形成してあり、あるいはスプリング自体が配線回路となり、ＡＦ用コイル４に通電可能になっている。ＡＦ用コイル４に電流を流すことにより、ＡＦ用コイル４と永久磁石２２，２４との相互作用によって、光軸方向にレンズホルダ６を移動可能になる。   As shown in FIG. 2A, a lens holder 6 is constituted by the lens 2 and the AF coil 4. The front spring 10 f and the rear spring 10 b are arranged so as to connect the lens holder 6 and the magnet holding member 8. The front spring 10f and the rear spring 10b are flexible members. A wiring circuit is formed in at least one of the springs 10f and 10b, or the spring itself becomes a wiring circuit, and the AF coil 4 is energized. It is possible. By passing a current through the AF coil 4, the lens holder 6 can be moved in the optical axis direction due to the interaction between the AF coil 4 and the permanent magnets 22 and 24.

前方スプリング１０ｆは、レンズホルダ６のＺ軸正方向側に配置されており、後方スプリング１０ｂは、レンズホルダ６のＺ軸負方向側に配置されている。したがって、前方スプリング１０ｆおよび後方スプリング１０ｂは、光軸方向にレンズホルダ６を挟んで配置される。これにより、レンズ保持ユニット７は、レンズ２を有するレンズホルダ６を光軸方向の両側からバランス良く支持することが可能であり、耐久性および信頼性が高く、良好にＡＦ制御を行うことが可能になっている。   The front spring 10 f is disposed on the Z axis positive direction side of the lens holder 6, and the rear spring 10 b is disposed on the Z axis negative direction side of the lens holder 6. Therefore, the front spring 10f and the rear spring 10b are arranged with the lens holder 6 interposed therebetween in the optical axis direction. Thereby, the lens holding unit 7 can support the lens holder 6 having the lens 2 from both sides in the optical axis direction in a balanced manner, has high durability and reliability, and can perform AF control well. It has become.

本実施形態に係る前方スプリング１０ｆおよび後方スプリング１０ｂは、たとえば導電性を有する弾性材料を用いて構成されている。前方スプリング１０ｆおよび後方スプリング１０ｂを構成する弾性材料としては、特に限定されないが、例えば、ベリリウム銅または、銅、金、もしくはこれらを含む合金等の金属材料を用いることができる。   The front spring 10f and the rear spring 10b according to the present embodiment are configured using, for example, a conductive elastic material. Although it does not specifically limit as an elastic material which comprises the front spring 10f and the back spring 10b, For example, metal materials, such as beryllium copper or copper, gold | metal | money, or an alloy containing these, can be used.

このように、レンズホルダ６（レンズ２＋ＡＦ用コイル４）と、マグネット保持部材８と、前方スプリング１０ｆおよび後方スプリング１０ｂと、永久磁石２２，２４とによって、レンズ保持ユニット７が構成されている。図２Ａに示すように、マグネット保持部材８には、レンズ２の光軸周辺に当たる部分に円形の孔８ｃが設けられており、レンズ２を通過した光が撮像素子４２に届くのを妨げない。   Thus, the lens holder 7 (lens 2 + AF coil 4), the magnet holding member 8, the front spring 10f and the rear spring 10b, and the permanent magnets 22 and 24 constitute the lens holding unit 7. As shown in FIG. 2A, the magnet holding member 8 is provided with a circular hole 8 c in a portion that hits the periphery of the optical axis of the lens 2, and does not prevent the light that has passed through the lens 2 from reaching the image sensor 42.

図２Ａに示すように、ベース部材３０は、固定部３２、ブレ補正用コイル３４、位置検出センサ３６を有している。固定部３２の光軸正方向の面であって、光軸と垂直な面３２ｂには、上述した永久磁石２２の第２面２２ｂと対向するようにブレ補正用コイル３４が配置されている。ブレ補正用コイル３４の光軸負方向には、ヨーク３９が固定部３２に埋設されていてもよい。永久磁石２２と、ブレ補正用コイル３４と、ヨーク３９とによって、ブレ補正用ＶＣＭ（Voice Coil Motor）部３４ｂが構成されている。   As shown in FIG. 2A, the base member 30 has a fixed portion 32, a shake correction coil 34, and a position detection sensor 36. A blur correction coil 34 is disposed on a surface 32b in the positive direction of the optical axis of the fixed portion 32 and perpendicular to the optical axis so as to face the second surface 22b of the permanent magnet 22 described above. A yoke 39 may be embedded in the fixed portion 32 in the optical axis negative direction of the shake correction coil 34. The permanent magnet 22, the shake correction coil 34, and the yoke 39 constitute a shake correction VCM (Voice Coil Motor) portion 34 b.

永久磁石２２は、ブレ補正用コイル３４の周辺に、ブレ補正用コイル３４を流れる電流の向きに略直交する磁場の向きを有する磁界を発生させる。ブレ補正用コイル３４に電流を流すと、ブレ補正用コイル３４は、永久磁石２２によって発生された磁界から、光軸に垂直な向きの力を受ける。したがって、レンズ保持ユニット７を、Ｙ軸方向（図２に示す矢印方向）に沿って効果的に駆動させることが可能になっている。図２に示すマグネット保持部材８が、固定部３２のスライド面３２ａ上でＹ軸方向にスライドすることによって、レンズ保持ユニット７が駆動される。   The permanent magnet 22 generates a magnetic field having a magnetic field direction substantially orthogonal to the direction of the current flowing through the vibration correction coil 34 around the vibration correction coil 34. When a current is passed through the blur correction coil 34, the blur correction coil 34 receives a force in a direction perpendicular to the optical axis from the magnetic field generated by the permanent magnet 22. Therefore, the lens holding unit 7 can be effectively driven along the Y-axis direction (the arrow direction shown in FIG. 2). The lens holding unit 7 is driven by the magnet holding member 8 shown in FIG. 2 sliding on the slide surface 32a of the fixed portion 32 in the Y-axis direction.

永久磁石２２の第２面２２ｂとブレ補正用コイル３４とを、互いに近接させて対向するように配置することによって、永久磁石２２と、ブレ補正用コイル３４と、ヨーク３９とによって構成されるブレ補正用ＶＣＭ部３４ｂの出力を高めることができると共に、図１に示すレンズ駆動装置１の小型化にも貢献することができる。   By arranging the second surface 22b of the permanent magnet 22 and the shake correction coil 34 so as to be close to each other and face each other, the shake is constituted by the permanent magnet 22, the shake correction coil 34, and the yoke 39. The output of the correction VCM unit 34b can be increased, and the lens driving device 1 shown in FIG.

固定部３２が永久磁石２４と対向する面３２ｄには、位置検出センサ３６が配置されている。レンズ保持ユニット７のＹ軸方向の位置情報は、位置検出センサ３６によって、ブレ補正回路（不図示）に出力されている。位置検出センサ３６の出力情報が反映されてレンズ保持ユニット７の駆動命令がブレ補正回路から出力されるので、レンズ保持ユニット７のフィードバック制御が可能になっている。位置検出センサ３６としては、例えばホール素子を用いることにより、図１に示すレンズ駆動装置１の小型化と、レンズ保持ユニット７の精密な位置検出が可能となる。   A position detection sensor 36 is disposed on a surface 32 d where the fixed portion 32 faces the permanent magnet 24. The position information of the lens holding unit 7 in the Y-axis direction is output by a position detection sensor 36 to a shake correction circuit (not shown). Since the output information of the position detection sensor 36 is reflected and the driving command for the lens holding unit 7 is output from the blur correction circuit, feedback control of the lens holding unit 7 is possible. As the position detection sensor 36, for example, by using a Hall element, the lens driving device 1 shown in FIG. 1 can be miniaturized and the lens holding unit 7 can be accurately detected.

固定部３２には、上述したマグネット保持部材８の孔８ｃと同様に、レンズ２の光軸周辺に当たる部分に円形の孔３２ｃが設けられており、レンズ２を通過した光が撮像素子４２に届くのを妨げない。   Similar to the hole 8 c of the magnet holding member 8 described above, the fixing portion 32 is provided with a circular hole 32 c in a portion that hits the periphery of the optical axis of the lens 2, and the light that has passed through the lens 2 reaches the image sensor 42. It will not prevent you.

以上のように、図１に示すレンズ駆動装置１のＹ軸方向の構成について、図２Ａを基に詳細に述べたが、Ｘ軸方向も同様の構成をしている。したがって、固定部３２に対して、レンズ保持ユニット７を、光軸に垂直なＸ−Ｙ平面に沿って移動可能になっている。このようにして、ブレ補正動作が可能となる。   As described above, the configuration in the Y-axis direction of the lens driving device 1 shown in FIG. 1 has been described in detail based on FIG. 2A, but the X-axis direction has the same configuration. Therefore, the lens holding unit 7 can be moved with respect to the fixed portion 32 along the XY plane perpendicular to the optical axis. In this way, a shake correction operation can be performed.

なお、後方スプリング１０ｂは、永久磁石２２，２４の第２面２２ｂ，２４ｂとブレ補正用コイル３４とが対向する隙間位置を避けるように配置されていることが好ましい。例えば、図１に示すレンズ保持ユニット７の４隅から、ブレ補正用コイル３４，３８の光軸正方向上の位置を避けるように後方スプリング１０ｂを配置する。後方スプリング１０ｂの平面図を図２Ｂに示す。図２Ｂに示すように、後方スプリング１０ｂは、図１に示すレンズホルダ６に接合されるリング部１０ｂ１と、このリング部１０ｂ１の周方向４ヶ所位置に一体的に設けられた可撓部１０ｂ２とを有する。各可撓部１０ｂ２の先端は、コイル３４，３８（図１に示す永久磁石２２，２４も同様）を避けるように湾曲形状を有し、図１に示すマグネット保持部材８の側壁８ａに固定される。可撓部１０ｂ２が撓むことで、後方スプリング１０ｂは、図１に示すレンズホルダ６を、マグネット保持部材８に対して相対的にＺ方向に移動させることを許容する。図１に示す前方スプリング１０ｆも、後方スプリング１０ｂと同様な構成を有している。   The rear spring 10b is preferably arranged so as to avoid a gap position where the second surfaces 22b and 24b of the permanent magnets 22 and 24 and the blur correction coil 34 face each other. For example, the rear springs 10b are arranged from the four corners of the lens holding unit 7 shown in FIG. A plan view of the rear spring 10b is shown in FIG. 2B. As shown in FIG. 2B, the rear spring 10b includes a ring portion 10b1 joined to the lens holder 6 shown in FIG. 1, and a flexible portion 10b2 provided integrally at four positions in the circumferential direction of the ring portion 10b1. Have The tip of each flexible portion 10b2 has a curved shape so as to avoid the coils 34 and 38 (the same applies to the permanent magnets 22 and 24 shown in FIG. 1), and is fixed to the side wall 8a of the magnet holding member 8 shown in FIG. The As the flexible portion 10b2 bends, the rear spring 10b allows the lens holder 6 shown in FIG. 1 to move relative to the magnet holding member 8 in the Z direction. The front spring 10f shown in FIG. 1 has the same configuration as the rear spring 10b.

本実施形態に係るレンズ駆動装置１では、ＡＦ制御とブレ補正制御の両方の制御において、共通の永久磁石２２，２４が使用される。すなわち、永久磁石２２，２４とＡＦ用コイル４との組み合わせにおいて、ＡＦ用コイル４に通電することにより、永久磁石２２に対向するＡＦ用コイル４には光軸方向に駆動力が発生し、ＡＦ用コイル４が装着されたレンズホルダ６が光軸方向に移動する。したがって、ＡＦ制御が可能になる。しかも、永久磁石２２，２４とブレ補正用コイル３４との組み合わせにおいて、ブレ補正用コイル３４に通電することにより、永久磁石２２，２４に対向するブレ補正用コイル３４には光軸と垂直な方向に駆動力が発生し、永久磁石２２，２４を有するレンズ保持ユニット７が光軸と垂直な方向に移動する。したがって、ブレ補正制御が可能になる。このように、第１面２２ａと第２面２２ｂとが垂直に構成される永久磁石２２が、ＡＦ制御用マグネットとブレ補正制御用マグネットを兼ねることにより、部品点数を削減することができ、簡単な構成でＡＦ制御とブレ補正制御を行うことが可能となる。しかも、レンズ駆動装置１の小型化にも貢献することができる。   In the lens driving device 1 according to the present embodiment, the common permanent magnets 22 and 24 are used in both the AF control and the shake correction control. That is, in the combination of the permanent magnets 22 and 24 and the AF coil 4, when the AF coil 4 is energized, a driving force is generated in the optical axis direction in the AF coil 4 facing the permanent magnet 22. The lens holder 6 to which the working coil 4 is attached moves in the optical axis direction. Therefore, AF control becomes possible. In addition, in the combination of the permanent magnets 22 and 24 and the shake correction coil 34, when the shake correction coil 34 is energized, the shake correction coil 34 facing the permanent magnets 22 and 24 has a direction perpendicular to the optical axis. The lens holding unit 7 having the permanent magnets 22 and 24 moves in a direction perpendicular to the optical axis. Therefore, blur correction control can be performed. As described above, the permanent magnet 22 in which the first surface 22a and the second surface 22b are configured vertically serves as both an AF control magnet and a shake correction control magnet, so that the number of parts can be reduced and simplified. With this configuration, it is possible to perform AF control and blur correction control. In addition, the lens driving device 1 can be reduced in size.

さらに、ＡＦ用コイル４と電気的に接続される第２スプリング１０ｂが、永久磁石２２の第２面２２ｂとブレ補正用コイル３４とが対向する隙間位置を避けるように配置されるために、永久磁石２２の第２面２２ｂとブレ補正用コイル３４との間の磁束を乱すことがない。したがって、正確にブレ補正制御を行うことが可能になる。   Further, the second spring 10b that is electrically connected to the AF coil 4 is disposed so as to avoid a gap position where the second surface 22b of the permanent magnet 22 and the blur correction coil 34 face each other. The magnetic flux between the second surface 22b of the magnet 22 and the shake correction coil 34 is not disturbed. Therefore, it is possible to perform blur correction control accurately.

第２実施形態
本実施形態では、以下に示す以外は図１および図２に示す第１実施形態と同様であり、重複する説明は省略する。 Second Embodiment This embodiment is the same as the first embodiment shown in FIG. 1 and FIG. 2 except for the following, and a duplicate description is omitted.

図３に示すように、固定部３２の光軸正方向の面であって、光軸と垂直な面３２ｂには、永久磁石２２の第１面２２ｂと対向するようにブレ補正用コイル３４が配置されている。本実施形態では、固定部３２の光軸正方向側の面であって、永久磁石２４の第２面２４ｂと対向する面３２ｄにも、ブレ補正用コイル３４と同様にして、ブレ補正用コイル３５が配置されている。固定部３２には、ブレ補正用コイル３５と接するようにしてヨーク（不図示）が埋設されていてもよい。ブレ補正用コイル３５と永久磁石２４の第２面２４ｂとが対向することにより、ブレ補正用ＶＣＭ（Voice Coil Motor）部３５ｂが構成されている。   As shown in FIG. 3, a blur correction coil 34 is disposed on a surface 32 b in the positive direction of the optical axis of the fixed portion 32 and perpendicular to the optical axis so as to face the first surface 22 b of the permanent magnet 22. Has been placed. In the present embodiment, the blur correction coil is also applied to the surface 32 d of the fixed portion 32 on the optical axis positive direction side and facing the second surface 24 b of the permanent magnet 24 in the same manner as the blur correction coil 34. 35 is arranged. A yoke (not shown) may be embedded in the fixing portion 32 so as to be in contact with the shake correction coil 35. The vibration correction coil 35 and the second surface 24b of the permanent magnet 24 face each other to form a vibration correction VCM (Voice Coil Motor) portion 35b.

図３に示すブレ補正用コイル３４に電流を流すことにより、永久磁石２２との相互作用により、レンズ保持ユニット７を、Ｙ軸方向（図３に示す矢印方向）に沿って効果的に駆動させることが可能になっている。本実施形態では、図３に示すブレ補正用コイル３５にも電流を流すことにより、永久磁石２４との相互作用により、レンズ保持ユニット７を、Ｙ軸方向に沿って効果的に駆動させることが可能になっている。   By passing an electric current through the blur correction coil 34 shown in FIG. 3, the lens holding unit 7 is effectively driven along the Y-axis direction (the arrow direction shown in FIG. 3) by the interaction with the permanent magnet 22. It is possible. In the present embodiment, the lens holding unit 7 can be effectively driven along the Y-axis direction due to the interaction with the permanent magnet 24 by passing a current also through the blur correction coil 35 shown in FIG. It is possible.

なお、図３に示すように、位置検出センサ３６は、ブレ補正用コイル３５の隙間に配置されることが好ましい。これにより、レンズ駆動装置の小型化に貢献することができる。   As shown in FIG. 3, the position detection sensor 36 is preferably arranged in the gap of the blur correction coil 35. Thereby, it can contribute to size reduction of a lens drive device.

第２実施形態に係るレンズ駆動装置のＹ軸方向の構成（２組）について、図３を基に述べたが、第２実施形態に係るレンズ駆動装置は、Ｘ軸方向も同様の構成（２組）をしている。したがって、固定部３２に対して、レンズ保持ユニット７を、光軸に垂直なＸ−Ｙ平面に沿って移動させることが可能である。このように、一方向に対し２組のブレ補正用コイルを用いることで、低電圧でも十分にレンズ保持ユニット７を駆動させることができ、省電力で効果的なブレ補正動作が可能となる。   The configuration in the Y-axis direction (two sets) of the lens driving device according to the second embodiment has been described based on FIG. 3, but the lens driving device according to the second embodiment has the same configuration in the X-axis direction (2 Group). Therefore, it is possible to move the lens holding unit 7 with respect to the fixed portion 32 along the XY plane perpendicular to the optical axis. In this way, by using two sets of blur correction coils in one direction, the lens holding unit 7 can be sufficiently driven even at a low voltage, and a power saving and effective blur correction operation can be performed.

第３実施形態
本実施形態では、以下に示す以外は図２に示す第２実施形態と同様であり、重複する説明は省略する。 Third Embodiment The present embodiment is the same as the second embodiment shown in FIG. 2 except for the following, and a duplicate description is omitted.

図４に示すように、本実施形態に係る永久磁石２５，２６では、光軸と平行な面に沿って配置される第１面２５ａ，２６ａが２極着磁されており、光軸方向に沿ってＮ極とＳ極に分割されている。永久磁石２５，２６の第１面２５ａ，２６ａに対向するようにＡＦ用コイル４６，４７が配置してある。第１実施形態では、ＡＦ用コイルは光軸を周回するように巻回されている一つのコイルによって構成されているが、第３実施形態では、互いに独立した２つのコイルによって構成されている。各コイルは、光軸の周方向に沿って配置されている。図４では２つのコイルを示してあるが、実際には周方向に沿って４つのコイルで構成されている。ＡＦ用コイル４６と永久磁石２５、およびＡＦ用コイル４７と永久磁石２６とが対向することにより、ＡＦ制御用ＶＣＭ部４６ｂ，４７ｂが形成されている。   As shown in FIG. 4, in the permanent magnets 25 and 26 according to the present embodiment, the first surfaces 25 a and 26 a arranged along the plane parallel to the optical axis are magnetized in two poles, and are arranged in the optical axis direction. It is divided into N pole and S pole along. AF coils 46 and 47 are arranged so as to face the first surfaces 25a and 26a of the permanent magnets 25 and 26, respectively. In the first embodiment, the AF coil is composed of one coil wound around the optical axis. In the third embodiment, the AF coil is composed of two coils independent of each other. Each coil is arranged along the circumferential direction of the optical axis. In FIG. 4, two coils are shown, but in actuality, they are composed of four coils along the circumferential direction. The AF coil 46 and the permanent magnet 25, and the AF coil 47 and the permanent magnet 26 face each other to form AF control VCM portions 46b and 47b.

レンズ２とＡＦ用コイル４６，４７とにより、レンズホルダ１６が構成されている。不図示の前方スプリング１０ｆおよび後方スプリング１０ｂは、レンズホルダ１６とマグネット保持部材８とを連結するように配置されている。ＡＦ用コイル４６，４７に電流を流すことにより、ＡＦ用コイル４６，４７と永久磁石２５，２６との相互作用によって、光軸方向にレンズホルダ６を移動可能になる。このような構成にすることで、効果的にＡＦ制御をすることが可能になる。   The lens 2 and the AF coils 46 and 47 constitute a lens holder 16. A front spring 10f and a rear spring 10b (not shown) are arranged so as to connect the lens holder 16 and the magnet holding member 8. By passing a current through the AF coils 46 and 47, the lens holder 6 can be moved in the optical axis direction by the interaction between the AF coils 46 and 47 and the permanent magnets 25 and 26. With such a configuration, it is possible to effectively perform AF control.

永久磁石２５の第１面２５ａと第２面２５ｂとは垂直関係にあり、永久磁石２６の第１面２６ａと第２面２６ｂとは垂直関係にある。ＡＦ用コイル４６，４７に電流を流すことで、永久磁石２５とＡＦ用コイル４６とが相互に作用し、さらに永久磁石２６とＡＦ用コイル４７とが相互に作用する。その結果、レンズホルダ１６が光軸方向に移動することでＡＦ制御が可能になる。しかも、永久磁石２６とブレ補正用コイル３４、および永久磁石２５とブレ補正用コイル３５との相互作用により、レンズ保持ユニット７が光軸と垂直な方向に移動し、ブレ補正制御が可能になる。したがって、上述した第１および第２実施形態と同様にして、レンズ保持ユニット７をＹ軸方向に移動させることでブレ補正制御が可能である。Ｘ軸方向に対してもＹ軸方向と同様の構成を有しており、レンズ保持ユニット７を光軸に垂直なＸ−Ｙ平面に沿って移動させることでブレ補正が可能になる。   The first surface 25a and the second surface 25b of the permanent magnet 25 are in a vertical relationship, and the first surface 26a and the second surface 26b of the permanent magnet 26 are in a vertical relationship. By passing a current through the AF coils 46 and 47, the permanent magnet 25 and the AF coil 46 interact with each other, and the permanent magnet 26 and the AF coil 47 interact with each other. As a result, AF control becomes possible by moving the lens holder 16 in the optical axis direction. In addition, due to the interaction between the permanent magnet 26 and the shake correction coil 34 and between the permanent magnet 25 and the shake correction coil 35, the lens holding unit 7 moves in the direction perpendicular to the optical axis, and shake correction control becomes possible. . Accordingly, blur correction control can be performed by moving the lens holding unit 7 in the Y-axis direction in the same manner as in the first and second embodiments described above. The X-axis direction has the same configuration as that of the Y-axis direction, and blur correction can be performed by moving the lens holding unit 7 along the XY plane perpendicular to the optical axis.

このような構成にすることで、より効果的にＡＦ制御およびブレ補正制御を行うことができる。しかも、ＡＦ用コイル４６，４７の光軸と垂直な方向の厚さを小さくすることが可能で、レンズ駆動装置の小型化に貢献することができる。   With such a configuration, AF control and blur correction control can be performed more effectively. In addition, the thickness of the AF coils 46 and 47 in the direction perpendicular to the optical axis can be reduced, which contributes to the downsizing of the lens driving device.

第４実施形態
本実施形態では、以下に示す以外は図１、図２Ａおよび図２Ｂに示す第１実施形態と同様であり、重複する説明は省略する。 Fourth Embodiment This embodiment is the same as the first embodiment shown in FIG. 1, FIG. 2A and FIG. 2B except for the following, and a duplicate description is omitted.

図５に示すように、マグネット保持部材８の底面８ｄには、撮像素子４２が配置されている。撮像素子４２から光軸正方向に向かって、ブレ補正用レンズ２０、ＡＦ用レンズ２１が配置されている。本実施形態では、光軸方向に移動することによってオートフォーカス動作を行うＡＦ用レンズ２１と、光軸に垂直な方向に移動してブレ補正動作を行うブレ補正用レンズ２０とが、別体で構成されている。ＡＦ用レンズ２１を光軸方向に移動させるための構成は、図２に示すレンズ２を図５に示すＡＦ用レンズ２１に置き換えるのみで、第１実施形態と同様であるため、説明を省略する。   As shown in FIG. 5, an image sensor 42 is disposed on the bottom surface 8 d of the magnet holding member 8. A blur correction lens 20 and an AF lens 21 are arranged from the image sensor 42 toward the positive direction of the optical axis. In the present embodiment, an AF lens 21 that performs an autofocus operation by moving in the optical axis direction and a blur correction lens 20 that performs a blur correction operation by moving in a direction perpendicular to the optical axis are separate. It is configured. The configuration for moving the AF lens 21 in the optical axis direction is the same as that of the first embodiment except that the lens 2 shown in FIG. 2 is replaced with the AF lens 21 shown in FIG. .

固定部３２には、ブレ補正用レンズ２０が固定されている。さらに、固定部３２には、永久磁石２２の第２面２２ｂと対向するようにブレ補正用コイル３４が配置されている。永久磁石２２の第２面２２ｂとブレ補正用コイル３４とによって、ブレ補正用レンズ２０を光軸Ｚ１に垂直な方向に移動させるブレ補正用ＶＣＭ部が構成されている。ブレ補正用コイル３４に電流を流すことにより、永久磁石２２との相互作用によって、マグネット保持部材８に対して、固定部３２をＹ軸方向に沿ってスライドさせることが可能になっている。Ｘ軸方向に対してもＹ軸方向と同様の構成を有しており、固定部３２を光軸に垂直なＸ−Ｙ平面に沿って移動させることでブレ補正が可能になる。   The blur correction lens 20 is fixed to the fixing portion 32. Furthermore, a blur correction coil 34 is disposed on the fixed portion 32 so as to face the second surface 22 b of the permanent magnet 22. The second surface 22b of the permanent magnet 22 and the blur correction coil 34 constitute a blur correction VCM unit that moves the blur correction lens 20 in a direction perpendicular to the optical axis Z1. By passing an electric current through the blur correction coil 34, the fixed portion 32 can be slid along the Y-axis direction with respect to the magnet holding member 8 by interaction with the permanent magnet 22. The X-axis direction has the same configuration as that of the Y-axis direction, and blur correction can be performed by moving the fixed portion 32 along the XY plane perpendicular to the optical axis.

このように、ＡＦ用レンズ２１とブレ補正用レンズ２０とが別体で構成されていても、ＡＦ用コイルおよびブレ補正用コイルに対応するマグネットが単一の永久磁石２２で共用化されているために、レンズ駆動装置の小型化に貢献することができる。   Thus, even if the AF lens 21 and the shake correction lens 20 are configured separately, the magnet corresponding to the AF coil and the shake correction coil is shared by the single permanent magnet 22. Therefore, it can contribute to size reduction of a lens drive device.

第５実施形態
本実施形態では、以下に示す以外は図１〜図３に示す第１および第２実施形態と同様であり、重複する説明は省略する。 Fifth Embodiment The fifth embodiment is the same as the first and second embodiments shown in FIGS. 1 to 3 except for the following, and a duplicate description is omitted.

図６に示すように、撮像素子基板４４に固定される撮像素子４２の光軸正方向に向かって、レンズ２、第２レンズ２３が、この順に配置されている。レンズ２をＡＦ制御するための構成、およびレンズ保持ユニット７を移動させてブレ補正制御を行うための構成は、上述した第１および第２実施形態と同様であり、説明を省略する。   As shown in FIG. 6, the lens 2 and the second lens 23 are arranged in this order in the positive direction of the optical axis of the image sensor 42 fixed to the image sensor substrate 44. The configuration for performing the AF control of the lens 2 and the configuration for performing the blur correction control by moving the lens holding unit 7 are the same as those in the first and second embodiments described above, and a description thereof will be omitted.

本実施形態では、図１に示すレンズ駆動装置１を光軸正方向から覆うようにして、第２ケース５０が撮像素子基板４４に組み付けられている。第２ケース５０は、第２レンズ２３を固定している。第２レンズ２３としては、例えばレンズ２を保護するためのレンズや、撥水コーティングレンズなど、様々な種類のレンズで構成することが可能である。   In the present embodiment, the second case 50 is assembled to the image sensor substrate 44 so as to cover the lens driving device 1 shown in FIG. The second case 50 fixes the second lens 23. The second lens 23 can be composed of various types of lenses such as a lens for protecting the lens 2 and a water-repellent coating lens.

第６実施形態
本実施形態では、以下に示す以外は図１〜図３に示す第１および第２実施形態と同様であり、重複する説明は省略する。 Sixth Embodiment The sixth embodiment is the same as the first and second embodiments shown in FIGS. 1 to 3 except for the following, and a duplicate description is omitted.

図７に示すように、レンズ保持ユニット７は、レンズホルダ６（レンズ２＋ＡＦ用コイル４）、マグネット保持部材８、前方スプリング（不図示）、後方スプリング（不図示）、永久磁石２２，２４により構成されている。固定部３２には、永久磁石２２の第２面２２ｂに対向するようにブレ補正用コイル３４が固定され、永久磁石２４の第２面２４ｂに対向するようにブレ補正用コイル３５が固定されている。ブレ補正用コイル３５の隙間には、固定部３２に対して位置検出センサ３６が、レンズ保持ユニット７のＹ軸方向の位置を検出可能に固定してある。   As shown in FIG. 7, the lens holding unit 7 includes a lens holder 6 (lens 2 + AF coil 4), a magnet holding member 8, a front spring (not shown), a rear spring (not shown), and permanent magnets 22 and 24. Has been. The fixed portion 32 has a shake correction coil 34 fixed so as to face the second surface 22b of the permanent magnet 22, and a shake correction coil 35 fixed to face the second surface 24b of the permanent magnet 24. Yes. A position detection sensor 36 is fixed to the gap of the blur correction coil 35 so that the position of the lens holding unit 7 in the Y-axis direction can be detected.

本実施形態では、固定部８の４隅と、レンズ保持ユニット７の４隅とを連結するようにサスペンションワイヤ６０が配置されており、レンズ保持ユニット７を固定部８に対して相対移動可能に保持している。サスペンションワイヤ６０は通電可能であり、不図示の前方スプリングおよび／または後方スプリングと電気的に接続してある。本実施形態の前方スプリングおよび後方スプリングの構成は、第１実施形態における前方スプリング１０ｆおよび後方スプリング１０ｂの構成と同様である。   In the present embodiment, the suspension wires 60 are arranged so as to connect the four corners of the fixed portion 8 and the four corners of the lens holding unit 7 so that the lens holding unit 7 can be moved relative to the fixed portion 8. keeping. The suspension wire 60 can be energized and is electrically connected to a front spring and / or a rear spring (not shown). The configuration of the front spring and the rear spring in the present embodiment is the same as the configuration of the front spring 10f and the rear spring 10b in the first embodiment.

サスペンションワイヤ６０の材質は特に限定されないが、りん青銅が好ましい。   The material of the suspension wire 60 is not particularly limited, but phosphor bronze is preferable.

ブレ補正用コイル３４および３５に電流を流すことにより、永久磁石２２，２４との相互作用により、レンズ保持ユニット７を固定部８に対してＹ軸方向（図７の矢印方向）に沿って駆動させる。   By passing an electric current through the blur correction coils 34 and 35, the lens holding unit 7 is driven along the Y-axis direction (arrow direction in FIG. 7) with respect to the fixed portion 8 by interaction with the permanent magnets 22 and 24. Let

以上のように、レンズ駆動装置のＹ軸方向の構成について、図７を基に詳細に述べたが、Ｘ軸方向も同様の構成をしている。したがって、固定部３２に対して、レンズ保持ユニット７を、光軸に垂直なＸ−Ｙ平面に沿って移動可能になっている。このようにして、ブレ補正動作が可能となる。   As described above, the configuration of the lens driving device in the Y-axis direction has been described in detail with reference to FIG. 7, but the X-axis direction has the same configuration. Therefore, the lens holding unit 7 can be moved with respect to the fixed portion 32 along the XY plane perpendicular to the optical axis. In this way, a shake correction operation can be performed.

レンズ保持ユニット７は小型軽量なので、固定部３２の４隅に設けたサスペンションワイヤ６０でレンズ保持ユニット７を容易に保持可能である。しかも、ブレ補正用コイル３４，３５との位置関係において、固定部３２の４隅にサスペンションワイヤ６０が配置されることにより、レンズ保持ユニット７を光軸と直交する方向に効率的に駆動制御を行うことが可能になる。   Since the lens holding unit 7 is small and light, the lens holding unit 7 can be easily held by the suspension wires 60 provided at the four corners of the fixed portion 32. In addition, the suspension wire 60 is disposed at the four corners of the fixed portion 32 in the positional relationship with the blur correction coils 34 and 35, so that the lens holding unit 7 can be efficiently controlled in the direction perpendicular to the optical axis. It becomes possible to do.

なお、図５に示す第４実施形態において、ブレ補正用コイルを、Ｘ軸方向およびＹ軸方向に沿って、それぞれ２組配置してもよい。   In the fourth embodiment shown in FIG. 5, two sets of blur correction coils may be arranged along the X-axis direction and the Y-axis direction, respectively.

また、図５に示す第４実施形態において、マグネット保持部材８の底面８ｄと固定部３２をサスペンションワイヤにより連結して、光軸に垂直なＸ−Ｙ平面に沿って固定部３２を移動可能に支持してもよい。   In the fourth embodiment shown in FIG. 5, the bottom surface 8d of the magnet holding member 8 and the fixed portion 32 are connected by a suspension wire so that the fixed portion 32 can be moved along the XY plane perpendicular to the optical axis. You may support.

１…レンズ駆動装置
２…レンズ
４…ＡＦ用コイル
６…レンズホルダ
８…マグネット保持部材
１０ｆ…前方スプリング
１０ｂ…後方スプリング
２０…ブレ補正用レンズ
２１…ＡＦ用レンズ
２２，２４マグネット
２２ａ…第１面
２２ｂ…第２面
３０…ベース部材
３２…固定部
３４…ブレ補正用コイル
６０…サスペンションワイヤ DESCRIPTION OF SYMBOLS 1 ... Lens drive device 2 ... Lens 4 ... AF coil 6 ... Lens holder 8 ... Magnet holding member 10f ... Front spring 10b ... Back spring 20 ... Blur correction lens 21 ... AF lens 22, 24 Magnet 22a ... 1st surface 22b ... second surface 30 ... base member 32 ... fixed portion 34 ... blur correction coil 60 ... suspension wire

Claims (10)

レンズの外周に配置された第１コイルを備えるレンズホルダと、
前記第１コイルに対向する第１面を持つマグネットを固定するマグネット保持部材と、
前記レンズホルダと前記マグネット保持部材とを連結するように、しかも前記レンズホルダを前記マグネットに対して光軸方向へ移動可能に支持するスプリングと、
前記マグネットの第１面に垂直な第２面に対向して第２コイルが固定されるベース部材とを有し、
前記レンズホルダと、前記マグネットと、前記マグネット保持部材と、前記スプリングとを有するレンズ保持ユニットを、前記ベース部材に対し光軸と垂直な方向に相対移動可能に保持してあることを特徴とするレンズ駆動装置。 A lens holder comprising a first coil disposed on the outer periphery of the lens;
A magnet holding member for fixing a magnet having a first surface facing the first coil;
A spring that connects the lens holder and the magnet holding member and supports the lens holder so as to be movable in the optical axis direction with respect to the magnet;
A base member to which a second coil is fixed facing a second surface perpendicular to the first surface of the magnet;
A lens holding unit having the lens holder, the magnet, the magnet holding member, and the spring is held so as to be movable relative to the base member in a direction perpendicular to the optical axis. Lens drive device. 前記スプリングは、光軸方向の前方側で前記レンズホルダを支持する第１スプリングと、光軸方向の後方側で前記レンズホルダを支持する第２スプリングとで構成されることを特徴とする請求項１に記載のレンズ駆動装置。   The said spring is comprised by the 1st spring which supports the said lens holder in the optical axis direction front side, and the 2nd spring which supports the said lens holder in the optical axis direction back side. 2. The lens driving device according to 1. 前記第２スプリングは、前記マグネットの第２面と前記第２コイルとが対向する隙間位置を避けるように配置されることを特徴とする請求項２に記載のレンズ駆動装置。   The lens driving device according to claim 2, wherein the second spring is disposed so as to avoid a gap position where the second surface of the magnet and the second coil face each other. 前記スプリングは、前記第１コイルと電気的に接続されていることを特徴とする請求項１〜３のいずれかに記載のレンズ駆動装置。   The lens driving device according to claim 1, wherein the spring is electrically connected to the first coil. 前記ベース部材と前記レンズ保持ユニットとがサスペンションワイヤにより連結され、前記レンズ保持ユニットが前記ベース部材に対して光軸と直交する方向へ移動可能になっていることを特徴とする請求項１〜４のいずれかに記載のレンズ駆動装置。   5. The base member and the lens holding unit are connected by a suspension wire, and the lens holding unit is movable in a direction perpendicular to the optical axis with respect to the base member. The lens driving device according to any one of the above. 前記スプリングと前記サスペンションワイヤとで前記第１コイルへの給電を行うことを特徴とする請求項５に記載のレンズ駆動装置。   The lens driving device according to claim 5, wherein the spring and the suspension wire supply power to the first coil. 前記レンズがオートフォーカス用レンズであり、ブレ補正レンズを兼ねていることを特徴とする請求項１〜６のいずれかに記載のレンズ駆動装置。   The lens driving device according to claim 1, wherein the lens is an autofocus lens and serves also as a blur correction lens. 前記レンズがオートフォーカス用レンズであり、当該レンズとは別に、光軸に沿ってブレ補正用レンズが配置されていることを特徴とする請求項１〜６のいずれかに記載のレンズ駆動装置。   The lens driving apparatus according to claim 1, wherein the lens is an autofocus lens, and a blur correction lens is disposed along the optical axis separately from the lens. 前記ブレ補正用レンズが、前記ベース部材に取り付けられていることを特徴とする請求項８に記載のレンズ駆動装置。   The lens driving device according to claim 8, wherein the blur correction lens is attached to the base member. 前記サスペンションワイヤが、前記ベース部材を、光軸と直交する方向に前記レンズ保持ユニットに対して移動可能に保持することを特徴とする請求項９に記載のレンズ駆動装置。   The lens driving device according to claim 9, wherein the suspension wire holds the base member movably with respect to the lens holding unit in a direction orthogonal to the optical axis.
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