JP5237747B2 - Optical device for photography - Google Patents

Optical device for photography Download PDF

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JP5237747B2
JP5237747B2 JP2008264894A JP2008264894A JP5237747B2 JP 5237747 B2 JP5237747 B2 JP 5237747B2 JP 2008264894 A JP2008264894 A JP 2008264894A JP 2008264894 A JP2008264894 A JP 2008264894A JP 5237747 B2 JP5237747 B2 JP 5237747B2
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magnet
driving
cover member
lens
drive
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JP2010096804A (en
JP2010096804A5 (en
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章弘 長田
敏行 唐沢
勇一 武居
正 武田
久寛 石原
伸司 南澤
清史 宮崎
克重 柳澤
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Nidec Sankyo Corp
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Nidec Sankyo Corp
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Priority to US12/579,136 priority patent/US8279289B2/en
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Description

本発明は、レンズおよび撮像素子を搭載したレンズ駆動装置を揺動させて手振れを補正する手振れ補正機能を有する撮影用光学装置に関する。   The present invention relates to a photographing optical apparatus having a camera shake correction function for correcting a camera shake by swinging a lens driving device on which a lens and an image sensor are mounted.

近年、携帯電話等の携帯機器には、撮影用光学装置が搭載されている。携帯機器の場合、撮影時に手振れが発生しやすい。そこで、撮影時の手振れを補正することが可能な光学装置が提案されている（たとえば、特許文献１参照）。   2. Description of the Related Art In recent years, photographing optical devices are mounted on portable devices such as cellular phones. In the case of a mobile device, camera shake tends to occur during shooting. Therefore, an optical apparatus capable of correcting camera shake during shooting has been proposed (see, for example, Patent Document 1).

この特許文献１に記載の光学装置は、レンズや撮像素子を搭載した可動部と、光学装置の基台に固定されるとともに可動部の底面に当接するピボット軸と、基台に固定されるとともに可動部を揺動可能に支持する板バネと、可動部を揺動させるための揺動機構とを備えている。この光学装置では、揺動機構の駆動力で、可動部がピボット軸を支点に揺動して、手振れが補正されている。なお、この光学装置では、揺動機構は、駆動用コイルと駆動用磁石とによって構成されている。   The optical device described in Patent Document 1 is fixed to a movable portion on which a lens and an image sensor are mounted, a pivot shaft that is fixed to the base of the optical device and contacts the bottom surface of the movable portion, and a base. A leaf spring for swingably supporting the movable part and a swinging mechanism for swinging the movable part are provided. In this optical device, the camera shake is corrected by the movable portion swinging about the pivot shaft by the driving force of the swing mechanism. In this optical apparatus, the swing mechanism is constituted by a drive coil and a drive magnet.

特開２００７−３１００８４号公報JP 2007-310084 A

近年、携帯電話等の携帯機器の市場では、携帯機器の小型化、薄型化の要求が一段と高まっており、その結果、携帯機器に搭載される撮影用光学装置の小型化、薄型化の要求も一段と高まっている。しかしながら、撮影用光学装置が小型化、薄型化すると、レンズや撮像素子を搭載した可動部を揺動させるための駆動用コイルや駆動用磁石の配置スペースが制約されるため、可動部を揺動させるための十分な駆動力を得ることが困難になる。   In recent years, in the market of portable devices such as mobile phones, there has been an increasing demand for downsizing and thinning of portable devices. As a result, there has been a demand for downsizing and thinning of optical devices for photography mounted in portable devices. Increasingly. However, if the photographic optical device is reduced in size and thickness, the arrangement space for the driving coil and driving magnet for oscillating the movable part on which the lens and the image sensor are mounted is restricted. It is difficult to obtain a sufficient driving force for the purpose.

そこで、本発明の課題は、小型化、薄型化する場合であっても、レンズおよび撮像素子を搭載したレンズ駆動装置を揺動させるための十分な駆動力を得ることが可能な撮影用光学装置を提供することにある。   Accordingly, an object of the present invention is to provide a photographic optical device capable of obtaining a sufficient driving force for swinging a lens driving device equipped with a lens and an image sensor even when the size and thickness are reduced. Is to provide.

上記の課題を解決するため、本発明の撮影用光学装置は、レンズと撮像素子とレンズを駆動するレンズ駆動機構とを搭載したレンズ駆動装置と、レンズ駆動装置の傾き角速度を検出するセンサと、互いに対向配置される駆動用コイルと駆動用磁石とを有しセンサでの検出結果に基づいてレンズ駆動装置を揺動させて手振れを補正する手振れ補正機構と、駆動用磁石を保持する磁石保持部材とを備え、磁石保持部材は、磁性材料で形成されるとともに、レンズ駆動装置の外周側を覆う４つの側面を有する底付きの略四角筒状に形成され、磁石保持部材の周方向で隣り合う側面同士は、磁石保持部材の軸方向の全域において周方向で互いに繋がっており、磁石保持部材は、軸方向における側面の一端から磁石保持部材の内周側に向かって形成される底部と、軸方向における側面の他端から磁石保持部材の外周側に向かって広がるように形成される鍔部とを備え、駆動用磁石の駆動用コイルとの対向面には、軸方向で重なるように２極の磁極が形成され、駆動用磁石は、周方向で隣り合う駆動用磁石の磁極が異なるように、４つの側面のそれぞれの外側に固定されていることを特徴とする。 In order to solve the above problems, a photographing optical device according to the present invention includes a lens driving device including a lens, an imaging element, and a lens driving mechanism that drives the lens, a sensor that detects a tilt angular velocity of the lens driving device, A shake correction mechanism that has a drive coil and a drive magnet that are arranged opposite to each other and that shakes the lens drive device based on the detection result of the sensor to correct camera shake, and a magnet holding member that holds the drive magnet The magnet holding member is formed of a magnetic material and is formed in a substantially rectangular tube shape with a bottom having four side surfaces covering the outer peripheral side of the lens driving device, and is adjacent in the circumferential direction of the magnet holding member. The side surfaces are connected to each other in the circumferential direction in the entire axial direction of the magnet holding member, and the magnet holding member is formed from one end of the side surface in the axial direction toward the inner peripheral side of the magnet holding member. A bottom portion and a flange portion formed so as to spread from the other end of the side surface in the axial direction toward the outer peripheral side of the magnet holding member, and overlaps the surface facing the driving coil of the driving magnet in the axial direction. Thus, two magnetic poles are formed, and the drive magnets are fixed to the outer sides of the four side surfaces so that the magnetic poles of the drive magnets adjacent in the circumferential direction are different .

本発明の撮影用光学装置では、駆動用磁石の、駆動用コイルとの対向面に、２極の磁極が形成されている。そのため、駆動用磁石の、駆動用コイルとの対向面に１極の磁極が形成されている場合と比較して、巻回されて形成される駆動用コイルを有効に利用することが可能になる。すなわち、駆動力を発生させる駆動用コイルの有効部分を増やすことが可能になる。したがって、本発明では、揺動駆動機構の駆動力を向上させることが可能になり、撮影用光学装置が小型化、薄型化する場合であっても、レンズ駆動装置を揺動させるための十分な駆動力を得ることが可能になる。 In the photographic optical device of the present invention, two magnetic poles are formed on the surface of the drive magnet facing the drive coil. For this reason, it is possible to effectively use the drive coil formed by being wound, as compared with the case where a single magnetic pole is formed on the surface of the drive magnet facing the drive coil. . That is, it is possible to increase the effective portion of the driving coil that generates the driving force. Therefore, in the present invention, it becomes possible to improve the driving force of the swing driving mechanism, and even when the photographing optical device is downsized and thinned, it is sufficient to swing the lens driving device. A driving force can be obtained.

また、本発明では、駆動用磁石の駆動用コイルとの対向面に２極の磁極が形成されているため、１個の駆動用磁石に対して１個の駆動用コイルを対向させることで、駆動用コイルを有効に利用しつつ、揺動駆動機構の駆動力を向上させることができる。したがって、撮影用光学装置の構成を簡素化することが可能になる。 In the present invention, since the two poles of the magnetic pole on the surface facing the drive coils of the drive magnet is formed, by opposing one drive coil for one drive magnet, The driving force of the swing drive mechanism can be improved while effectively using the driving coil. Therefore, the configuration of the photographing optical device can be simplified.

また、本発明では、撮影用光学装置は、略四角筒状に形成されるとともに駆動用磁石を保持する磁石保持部材を備え、駆動用磁石の駆動用コイルとの対向面には、磁石保持部材の軸方向で重なるように２極の磁極が形成され、駆動用磁石は、磁石保持部材の周方向で隣り合う駆動用磁石の磁極が異なるように、磁石保持部材の側面のそれぞれに固定されているため、周方向で隣り合う駆動用磁石間に磁路が形成されやすくなる。したがって、揺動駆動機構の駆動力を効果的に向上させることが可能になる。また、本発明では、磁石保持部材の全ての側面が周方向で繋がっているため、周方向で隣り合う駆動用磁石間に磁路が形成されやすくなる。したがって、揺動駆動機構の駆動力を効果的に向上させることが可能になる。 In the present invention, the photographic optical system includes a magnet holding member for holding the driving magnet is formed into a substantially square tubular shape, the surface facing the drive coils of the drive magnet, magnet holding Two magnetic poles are formed so as to overlap in the axial direction of the member, and the driving magnet is fixed to each of the side surfaces of the magnet holding member so that the magnetic poles of adjacent driving magnets are different in the circumferential direction of the magnet holding member. Therefore, a magnetic path is easily formed between the drive magnets adjacent in the circumferential direction. Therefore, the driving force of the swing drive mechanism can be effectively improved. In the present invention, since all the side surfaces of the magnet holding member are connected in the circumferential direction, a magnetic path is easily formed between the driving magnets adjacent in the circumferential direction. Therefore, the driving force of the swing drive mechanism can be effectively improved.

本発明において、撮影用光学装置は、レンズ駆動装置を支持するとともに、駆動用コイルが固定される支持体を備えることが好ましい。In the present invention, the photographing optical device preferably includes a support body that supports the lens driving device and to which the driving coil is fixed.

以上のように、本発明の撮影用光学装置では、小型化、薄型化する場合であっても、レンズおよび撮像素子を搭載したレンズ駆動装置を揺動させるための十分な駆動力を得ることが可能になる。   As described above, the photographing optical device according to the present invention can obtain a sufficient driving force for swinging the lens driving device on which the lens and the image sensor are mounted even when the lens optical device is downsized and thinned. It becomes possible.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（撮影用光学装置の構成）
図１は、本発明の実施の形態にかかる撮影用光学装置１の斜視図である。図２は、図１のＥ−Ｅ断面の断面図である。図３は、図１のＦ−Ｆ断面の構成要素の一部を示す斜視図である。なお、以下の説明では、図１に示すように、互いに直交する３方向のそれぞれをＸ方向、Ｙ方向およびＺ方向とする。また、図１のＸ１方向側を「右」側、Ｘ２方向側を「左」側、Ｙ１方向側を「前」側、Ｙ２方向側を「後（後ろ）」側、Ｚ１方向側を「上」側、Ｚ２方向側を「下」側とする。本形態では、Ｚ方向は、揺動していないときの撮影用光学装置１の光軸方向である。 (Configuration of optical device for photographing)
FIG. 1 is a perspective view of a photographing optical apparatus 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line EE of FIG. FIG. 3 is a perspective view showing some of the components of the FF cross section of FIG. 1. In the following description, as shown in FIG. 1, the three directions orthogonal to each other are defined as an X direction, a Y direction, and a Z direction. In FIG. 1, the X1 direction side is the “right” side, the X2 direction side is the “left” side, the Y1 direction side is the “front” side, the Y2 direction side is the “rear (rear)” side, and the Z1 direction side is “up”. The “side” and the Z2 direction side are the “lower” side. In this embodiment, the Z direction is the optical axis direction of the photographing optical device 1 when it is not swinging.

本形態の撮影用光学装置１は、携帯電話等の携帯機器に搭載される小型かつ薄型のカメラであり、全体として略直方体状に形成されている。この撮影用光学装置１は、図１、図２に示すように、図示を省略するレンズおよび撮像素子を搭載したレンズ駆動装置２と、レンズ駆動装置２の傾き角速度を検出するセンサ４と、レンズ駆動装置２を支持する支持体５と、レンズ駆動装置２を揺動させる揺動駆動機構６とを備えている。
The photographic optical device 1 of this embodiment is a small and thin camera mounted on a portable device such as a cellular phone, and is formed in a substantially rectangular parallelepiped shape as a whole. As shown in FIGS. 1 and 2, the photographing optical device 1 includes a lens driving device 2 on which a lens and an image sensor (not shown) are mounted, a sensor 4 that detects an inclination angular velocity of the lens driving device 2, and a lens. A support body 5 that supports the drive device 2 and a swing drive mechanism 6 that swings the lens drive device 2 are provided.

レンズ駆動装置２には、上述のように、レンズおよび撮像素子が搭載されている。具体的には、レンズ駆動装置２の上端側にレンズが搭載され、レンズ駆動装置２の下端に撮像素子が搭載されている。また、レンズ駆動装置２には、レンズを光軸方向に駆動するためのレンズ駆動機構が搭載されている。このレンズ駆動機構は、たとえば、駆動用のコイルと駆動用の磁石とによって構成されている。   As described above, the lens driving device 2 is equipped with a lens and an image sensor. Specifically, a lens is mounted on the upper end side of the lens driving device 2, and an imaging element is mounted on the lower end of the lens driving device 2. The lens driving device 2 is equipped with a lens driving mechanism for driving the lens in the optical axis direction. This lens driving mechanism is constituted by, for example, a driving coil and a driving magnet.

レンズ駆動装置２は、全体として略直方体状に形成されている。このレンズ駆動装置２の前後および左右の側面は、下端が開口する底付きの略四角筒状に形成されたカバー部材９に覆われている。カバー部材９は、磁性材料で形成されている。上端側に配置されるカバー部材９の底部には、円形の貫通孔９ａが形成されている。また、カバー部材９の下端には、前後方向の外側および左右方向の外側に向かって広がる鍔部９ｂが形成されている。   The lens driving device 2 is formed in a substantially rectangular parallelepiped shape as a whole. The front and rear and left and right side surfaces of the lens driving device 2 are covered with a cover member 9 formed in a substantially square cylindrical shape with a bottom having an open lower end. The cover member 9 is made of a magnetic material. A circular through hole 9a is formed at the bottom of the cover member 9 disposed on the upper end side. In addition, a flange 9b is formed at the lower end of the cover member 9 so as to expand outward in the front-rear direction and outward in the left-right direction.

また、カバー部材９の後側面と右側面とは、図３に示すように、カバー部材９の周方向で繋がっている。具体的には、カバー部材９の後側面と右側面とは、上下方向の全域において周方向で繋がっている。同様に、カバー部材９の後側面と左側面とは、上下方向の全域において周方向で繋がり、カバー部材９の前側面と右側面とは、上下方向の全域において周方向で繋がり、カバー部材９の前側面と左側面とは、上下方向の全域において周方向で繋がっている。   Further, as shown in FIG. 3, the rear side surface and the right side surface of the cover member 9 are connected in the circumferential direction of the cover member 9. Specifically, the rear side surface and the right side surface of the cover member 9 are connected in the circumferential direction in the entire vertical direction. Similarly, the rear side surface and the left side surface of the cover member 9 are connected in the circumferential direction in the entire region in the up-down direction, and the front side surface and right side surface of the cover member 9 are connected in the circumferential direction in the entire region in the vertical direction. The front side surface and the left side surface are connected in the circumferential direction in the entire vertical direction.

すなわち、本形態では、カバー部材９の、周方向で隣り合う側面は、互いに上下方向の全域において周方向で繋がっている。また、カバー部材９の全側面が周方向で繋がっている。すなわち、本形態のカバー部材９は、全側面が上下方向の全域において周方向で繋がった略四角筒状に形成されている。なお、本形態では、図３に示すように、カバー部材９の、周方向で隣り合う側面の接続部分には、曲面部（Ｒ部）が形成されているが、側面の端部同士がそのまま直交するように接続されても良い。   That is, in this embodiment, the side surfaces adjacent to each other in the circumferential direction of the cover member 9 are connected to each other in the circumferential direction in the entire vertical direction. Moreover, all the side surfaces of the cover member 9 are connected in the circumferential direction. That is, the cover member 9 of the present embodiment is formed in a substantially rectangular tube shape in which all side surfaces are connected in the circumferential direction in the entire region in the vertical direction. In this embodiment, as shown in FIG. 3, a curved surface portion (R portion) is formed in the connection portion of the side surface adjacent to the cover member 9 in the circumferential direction, but the end portions of the side surfaces are left as they are. You may connect so that it may orthogonally cross.

センサ４は、ジャイロセンサ（角速度センサ）であり、レンズ駆動装置２の下側に配置されている。このセンサ４には、フレキシブルプリント基板（ＦＰＣ）１０が接続されている。このＦＰＣ１０は、レンズ駆動装置２に搭載されている撮像素子にも接続されている。ＦＰＣ１０は、撮影用光学装置１の下端側で引き回されて、撮影用光学装置１の左側面から引き出されている。   The sensor 4 is a gyro sensor (angular velocity sensor) and is disposed below the lens driving device 2. A flexible printed circuit board (FPC) 10 is connected to the sensor 4. The FPC 10 is also connected to an image sensor mounted on the lens driving device 2. The FPC 10 is drawn on the lower end side of the photographing optical device 1 and pulled out from the left side surface of the photographing optical device 1.

また、センサ４は、上端が開口する底付きで扁平な略四角筒状に形成されたセンサカバー部材１１の内部に配置されている。下端側に配置されるセンサカバー部材１１の底部の中心には、後述の支点突起１５ｂが当接する当接面１１ａが平面状に形成されている。また、センサカバー部材１１の上端には、カバー部材９の鍔部９ｂに下側から当接する鍔部１１ｂが前後方向の外側および左右方向の外側に向かって広がるように形成されている。本形態では、鍔部９ｂと鍔部１１ｂとが互いに固定されている。すなわち、センサカバー部材１１は、カバー部材９の下端に固定されている。   The sensor 4 is disposed inside a sensor cover member 11 that is formed in a flat and substantially rectangular tube shape with a bottom that opens at the upper end. At the center of the bottom of the sensor cover member 11 disposed on the lower end side, a contact surface 11a with which a fulcrum protrusion 15b described later contacts is formed in a flat shape. Further, at the upper end of the sensor cover member 11, a flange portion 11 b that comes into contact with the flange portion 9 b of the cover member 9 from below is formed so as to spread outward in the front-rear direction and outward in the left-right direction. In this embodiment, the flange portion 9b and the flange portion 11b are fixed to each other. That is, the sensor cover member 11 is fixed to the lower end of the cover member 9.

本形態では、レンズ駆動装置２とセンサ４とカバー部材９とセンサカバー部材１１とが、支持体５に揺動可能に支持されている。すなわち、レンズ駆動装置２、センサ４、カバー部材９およびセンサカバー部材１１によって、支持体５に対して揺動可能な可動モジュール１２が構成されている。   In this embodiment, the lens driving device 2, the sensor 4, the cover member 9, and the sensor cover member 11 are supported by the support 5 so as to be swingable. That is, the lens driving device 2, the sensor 4, the cover member 9 and the sensor cover member 11 constitute a movable module 12 that can swing with respect to the support 5.

支持体５は、撮影用光学装置１の下面を構成するベース体１５と、撮影用光学装置１の前後および左右の外周面を構成するケース体１６とを備えている。ケース体１６には、可動モジュール１２を揺動可能に支持する板バネ１７が固定されている。また、ケース体１６には、可動モジュール１２の揺動範囲を規制するためのストッパ部材１８が固定されている。   The support 5 includes a base body 15 constituting the lower surface of the photographing optical device 1 and case bodies 16 constituting the front and rear and left and right outer peripheral surfaces of the photographing optical device 1. A leaf spring 17 that supports the movable module 12 in a swingable manner is fixed to the case body 16. Further, a stopper member 18 for restricting the swing range of the movable module 12 is fixed to the case body 16.

ベース体１５は、略矩形状に形成されている。このベース体１５の略中心には、上側に向かって突出する突出部１５ａが形成されている。また、突出部１５ａの上面には、可動モジュール１２の揺動の支点となる支点突起１５ｂが形成されている。すなわち、本形態では、可動モジュール１２の下側に可動モジュール１２の揺動の支点が配置されている。この支点突起１５ｂは、たとえば、半球面状に形成されており、センサカバー部材１１の当接面１１ａに当接している。   The base body 15 is formed in a substantially rectangular shape. A projecting portion 15 a projecting upward is formed at the approximate center of the base body 15. In addition, a fulcrum protrusion 15b serving as a fulcrum for swinging the movable module 12 is formed on the upper surface of the protrusion 15a. In other words, in this embodiment, the swinging fulcrum of the movable module 12 is disposed below the movable module 12. The fulcrum protrusion 15 b is formed in a hemispherical shape, for example, and is in contact with the contact surface 11 a of the sensor cover member 11.

ケース体１６は、上端および下端が開口する略四角筒状に形成されている。このケース体１６の下端側には、ベース体１５が固定されている。ケース体１６の前後の側面および左右の側面の略中心には、揺動駆動機構６を構成する後述の駆動用コイル２３の引出線を配置するための開口部１６ａがそれぞれの側面を貫通するように形成されている。この開口部１６ａは、略矩形状に形成されている。本形態のケース体１６は、非磁性材料で形成されている。また、ケース体１６は、金属材料で形成されている。なお、ケース体１６の側面には、開口部１６ａが形成されなくても良い。   The case body 16 is formed in a substantially rectangular tube shape having upper and lower ends opened. A base body 15 is fixed to the lower end side of the case body 16. An opening 16a for arranging a lead wire for a driving coil 23, which will be described later, constituting the swing drive mechanism 6 passes through each side surface at substantially the center of the front and rear side surfaces and the left and right side surfaces of the case body 16. Is formed. The opening 16a is formed in a substantially rectangular shape. The case body 16 of this embodiment is formed of a nonmagnetic material. The case body 16 is made of a metal material. Note that the opening 16 a may not be formed on the side surface of the case body 16.

板バネ１７は、全体として略矩形状に形成されている。板バネ１７の４隅はケース体１６に固定され、板バネ１７の中心部には可動モジュール１２（具体的にはセンサカバー部材１１）が固定されており、板バネ１７は、ケース体１６に固定される固定部と、可動モジュール１２を保持する保持部と、固定部と保持部とを繋ぐバネ部とを備えている。   The plate spring 17 is formed in a substantially rectangular shape as a whole. The four corners of the leaf spring 17 are fixed to the case body 16, and the movable module 12 (specifically, the sensor cover member 11) is fixed to the center portion of the leaf spring 17, and the leaf spring 17 is attached to the case body 16. A fixed portion that is fixed, a holding portion that holds the movable module 12, and a spring portion that connects the fixing portion and the holding portion are provided.

なお、板バネ１７は、センサカバー部材１１の当接面１１ａとベース体１５の支点突起１５ｂとを確実に当接させるための与圧が発生するように（すなわち、可動モジュール１２を下方向へ付勢する付勢力が発生するように）、撓んだ状態でケース体１６に固定されている。また、本形態の板バネ１７は、具体的には、ストッパ部材１８を介してケース体１６に固定されている。すなわち、ケース体１６の内周面に固定されたストッパ部材１８に板バネ１７の４隅が固定されている。   Note that the leaf spring 17 generates a pressurizing force to reliably contact the contact surface 11a of the sensor cover member 11 and the fulcrum protrusion 15b of the base body 15 (that is, the movable module 12 is moved downward). It is fixed to the case body 16 in a bent state so that a biasing force for biasing is generated. Further, the leaf spring 17 of this embodiment is specifically fixed to the case body 16 via a stopper member 18. That is, the four corners of the leaf spring 17 are fixed to the stopper member 18 fixed to the inner peripheral surface of the case body 16.

ストッパ部材１８は、ケース体１６の内周面に固定されている。具体的には、カバー部材９の鍔部９ｂの上面に当接可能な位置およびセンサカバー部材１１の鍔部１１ｂの下面に当接可能な位置のそれぞれで、２個のストッパ部材１８がケース体１６の内周面に固定されており、ストッパ部材１８と鍔部９ｂ、１１ｂとによって、可動モジュール１２の揺動範囲が規制されている。   The stopper member 18 is fixed to the inner peripheral surface of the case body 16. Specifically, the two stopper members 18 are provided in the case body at positions where they can contact the upper surface of the flange portion 9b of the cover member 9 and positions where they can contact the lower surface of the flange portion 11b of the sensor cover member 11. 16 is fixed to the inner peripheral surface, and the swing range of the movable module 12 is regulated by the stopper member 18 and the flange portions 9b and 11b.

揺動駆動機構６は、駆動用磁石２１と、駆動用磁石２１に対向配置される駆動用コイル２３とを備えている。本形態の揺動駆動機構６は、４個の駆動用磁石２１と４個の駆動用コイル２３とを備えている。   The swing drive mechanism 6 includes a drive magnet 21 and a drive coil 23 disposed to face the drive magnet 21. The swing drive mechanism 6 of this embodiment includes four drive magnets 21 and four drive coils 23.

駆動用磁石２１は、略矩形の板状に形成されている。また、駆動用磁石２１は、第１磁石片２１ａと第２磁石片２１ｂとの２個の磁石片によって構成されている。具体的には、第１磁石片２１ａの下面と第２磁石片２１ｂの上面とが当接した状態で、第１磁石片２１ａと第２磁石片２１ｂとが接着固定されて駆動用磁石２１が形成されている。第１磁石片２１ａと第２磁石片２１ｂとは、幅が同じになるように形成されている。なお、第１磁石片２１ａの厚さと第２磁石片２１ｂの厚さとは、後述のように、異なっている。   The drive magnet 21 is formed in a substantially rectangular plate shape. The driving magnet 21 is composed of two magnet pieces, a first magnet piece 21a and a second magnet piece 21b. Specifically, the first magnet piece 21a and the second magnet piece 21b are bonded and fixed while the lower surface of the first magnet piece 21a and the upper surface of the second magnet piece 21b are in contact with each other. Is formed. The first magnet piece 21a and the second magnet piece 21b are formed to have the same width. In addition, the thickness of the 1st magnet piece 21a and the thickness of the 2nd magnet piece 21b differ as mentioned later.

駆動用磁石２１は、カバー部材９の前後の側面および左右の側面のそれぞれに１個ずつ固定されている。すなわち、駆動用磁石２１は、カバー部材９の前後の側面および左右の側面の外側に固定されている。上述のように、カバー部材９は、磁性材料で形成されており、カバー部材９は、駆動用磁石２１のバックヨークの機能を果たしている。本形態のカバー部材９は、駆動用磁石２１を保持する磁石保持部材である。   One drive magnet 21 is fixed to each of the front and rear side surfaces and the left and right side surfaces of the cover member 9. That is, the drive magnet 21 is fixed to the front and rear side surfaces and the outer sides of the left and right side surfaces of the cover member 9. As described above, the cover member 9 is made of a magnetic material, and the cover member 9 functions as a back yoke of the drive magnet 21. The cover member 9 of this embodiment is a magnet holding member that holds the drive magnet 21.

本形態では、カバー部材９の左右の側面に固定される駆動用磁石２１は、駆動用磁石２１の右面に形成される磁極と左面に形成される磁極とが異なるように着磁されている。また、カバー部材９の左右の側面に固定される駆動用磁石２１は、左右方向における第１磁石片２１ａの外側面に形成される磁極と第２磁石片２１ｂの外側面に形成される磁極とが異なるように（すなわち、左右方向における第１磁石片２１ａの内側面に形成される磁極と第２磁石片２１ｂの内側面に形成される磁極とが異なるように）着磁されている。   In this embodiment, the driving magnet 21 fixed to the left and right side surfaces of the cover member 9 is magnetized so that the magnetic pole formed on the right surface of the driving magnet 21 is different from the magnetic pole formed on the left surface. The driving magnet 21 fixed to the left and right side surfaces of the cover member 9 includes a magnetic pole formed on the outer surface of the first magnet piece 21a and a magnetic pole formed on the outer surface of the second magnet piece 21b in the left-right direction. Are different (that is, the magnetic poles formed on the inner surface of the first magnet piece 21a and the magnetic poles formed on the inner surface of the second magnet piece 21b in the left-right direction) are magnetized.

同様に、カバー部材９の前後の側面に固定される駆動用磁石２１は、駆動用磁石２１の前面に形成される磁極と後面に形成される磁極とが異なるように着磁されている。また、カバー部材９の前後の側面に固定される駆動用磁石２１は、前後方向における第１磁石片２１ａの外側面に形成される磁極と第２磁石片２１ｂの外側面に形成される磁極とが異なるように着磁されている。   Similarly, the driving magnet 21 fixed to the front and rear side surfaces of the cover member 9 is magnetized so that the magnetic pole formed on the front surface of the driving magnet 21 and the magnetic pole formed on the rear surface are different. Further, the driving magnet 21 fixed to the front and rear side surfaces of the cover member 9 includes a magnetic pole formed on the outer surface of the first magnet piece 21a and a magnetic pole formed on the outer surface of the second magnet piece 21b in the front-rear direction. Are magnetized differently.

すなわち、駆動用磁石２１の両面のそれぞれには、上下方向（すなわち、カバー部材９の軸方向）で重なるように２極の磁極が形成されている。また、本形態では、カバー部材９の周方向で隣り合う駆動用磁石２１の磁極が異なるように、駆動用磁石２１は、カバー部材９の側面のそれぞれに固定されている。すなわち、カバー部材９の周方向で隣り合う第１磁石片２１ａの磁極が異なるとともに、周方向で隣り合う第２磁石片２１ｂの磁極が異なるように、駆動用磁石２１は、カバー部材９の側面のそれぞれに固定されている。   That is, two magnetic poles are formed on both surfaces of the drive magnet 21 so as to overlap in the vertical direction (that is, the axial direction of the cover member 9). Further, in this embodiment, the driving magnets 21 are fixed to the side surfaces of the cover member 9 so that the magnetic poles of the adjacent driving magnets 21 in the circumferential direction of the cover member 9 are different. That is, the drive magnet 21 is provided on the side surface of the cover member 9 so that the magnetic poles of the first magnet pieces 21a adjacent in the circumferential direction of the cover member 9 are different and the magnetic poles of the second magnet pieces 21b adjacent in the circumferential direction are different. Each of which is fixed.

具体的には、本形態では、図３に示すように、カバー部材９の右側面に固定される駆動用磁石２１の第１磁石片２１ａの右側面（駆動用コイル２３との対向面）はＳ極、左側面はＮ極に着磁され、この駆動用磁石２１の第２磁石片２１ｂの右側面（駆動用コイル２３との対向面）はＮ極、左側面はＳ極に着磁されている。同様に、図示は省略するが、カバー部材９の右側面と対向するカバー部材９の左側面に固定される駆動用磁石２１の第１磁石片２１ａの左側面（駆動用コイル２３との対向面）はＳ極、右側面はＮ極に着磁され、この駆動用磁石２１の第２磁石片２１ｂの左側面（駆動用コイル２３との対向面）はＮ極、右側面はＳ極に着磁されている。   Specifically, in this embodiment, as shown in FIG. 3, the right side surface (the surface facing the driving coil 23) of the first magnet piece 21 a of the driving magnet 21 fixed to the right side surface of the cover member 9 is The S pole and left side are magnetized to N pole, the right side of the second magnet piece 21b of this driving magnet 21 (the surface facing the driving coil 23) is N pole, and the left side is magnetized to S pole. ing. Similarly, although not shown, the left side surface of the first magnet piece 21a of the driving magnet 21 fixed to the left side surface of the cover member 9 facing the right side surface of the cover member 9 (the surface facing the driving coil 23). ) Is the S pole, the right side is magnetized to the N pole, the left side of the second magnet piece 21b of the driving magnet 21 (the surface facing the driving coil 23) is the N pole, and the right side is the S pole. It is magnetized.

また、本形態では、図３に示すように、カバー部材９の後側面に固定される駆動用磁石２１の第１磁石片２１ａの後側面（駆動用コイル２３との対向面）はＮ極、前側面はＳ極に着磁され、この駆動用磁石２１の第２磁石片２１ｂの後側面（駆動用コイル２３との対向面）はＳ極、前側面はＮ極に着磁されている。同様に、図示は省略するが、カバー部材９の後側面と対向するカバー部材９の前側面に固定される駆動用磁石２１の第１磁石片２１ａの前側面（駆動用コイル２３との対向面）はＮ極、後側面はＳ極に着磁され、この駆動用磁石２１の第２磁石片２１ｂの前側面（駆動用コイル２３との対向面）はＳ極、後側面はＮ極に着磁されている。   In this embodiment, as shown in FIG. 3, the rear side surface (the surface facing the driving coil 23) of the first magnet piece 21 a of the driving magnet 21 fixed to the rear side surface of the cover member 9 is the N pole, The front side surface is magnetized to the S pole, the rear side surface (the surface facing the driving coil 23) of the second magnet piece 21b of the driving magnet 21 is magnetized to the S pole, and the front side surface is magnetized to the N pole. Similarly, although not shown, the front side surface of the first magnet piece 21a of the driving magnet 21 fixed to the front side surface of the cover member 9 that faces the rear side surface of the cover member 9 (the surface facing the driving coil 23). ) Is magnetized at the N pole and the rear side surface is magnetized at the S pole. The front side surface (the surface facing the driving coil 23) of the second magnet piece 21b of the driving magnet 21 is magnetized at the S pole, and the rear side surface is magnetized at the N pole. It is magnetized.

また、カバー部材９の左右の側面に固定される駆動用磁石２１の外側面は、下方向に向かうにしたがって左右方向の外側へ緩やかに広がるように傾斜しており、この駆動用磁石２１は、前後方向から見たときの形状が略台形状になるように形成されている。同様に、カバー部材９の前後の側面に固定される駆動用磁石２１の外側面は、下方向に向かうにしたがって前後方向の外側へ緩やかに広がるように傾斜しており、この駆動用磁石２１は、左右方向から見たときの形状が略台形状になるように形成されている。   Further, the outer surface of the driving magnet 21 fixed to the left and right side surfaces of the cover member 9 is inclined so as to gradually spread outward in the left-right direction as it goes downward. It is formed so that the shape when viewed from the front-rear direction is substantially trapezoidal. Similarly, the outer surface of the driving magnet 21 fixed to the front and rear side surfaces of the cover member 9 is inclined so as to gradually spread outward in the front-rear direction as it goes downward. The shape when viewed from the left-right direction is substantially trapezoidal.

駆動用コイル２３は、導線の周りを被覆する絶縁被膜と、絶縁被膜の周りをさらに被覆する融着被膜とを備える融着線が空芯状に巻回された（すなわち、ボビン等の巻芯を備えていない）空芯コイルである。この駆動用コイル２３は、融着線が略長方形状に巻回されて形成されている。また、駆動用コイル２３は、絶縁性のフィルムを介してケース体１６の前後の側面および左右の側面のそれぞれに１個ずつ固定されている。すなわち、駆動用コイル２３は、ケース体１６の前後の側面および左右の側面の内側に絶縁性のフィルムを介して固定されている。本形態では、略長方形状に巻回された駆動用コイル２３を構成する２個の長辺部と２個の短辺部のうちの短辺部の長手方向と上下方向とが一致するように、駆動用コイル２３がケース体１６に固定されている。   The driving coil 23 is formed by winding a fusion wire including an insulating coating covering the periphery of the conducting wire and a fusion coating further covering the periphery of the insulating coating in an air-core shape (that is, a core such as a bobbin). Air core coil). The driving coil 23 is formed by winding a fusion wire in a substantially rectangular shape. One drive coil 23 is fixed to each of the front and rear side surfaces and the left and right side surfaces of the case body 16 via an insulating film. That is, the drive coil 23 is fixed to the front and rear side surfaces and the left and right side surfaces of the case body 16 via an insulating film. In this embodiment, the longitudinal direction of the short side portion of the two long side portions and the short side portion constituting the driving coil 23 wound in a substantially rectangular shape coincides with the vertical direction. The driving coil 23 is fixed to the case body 16.

図２に示すように、駆動用磁石２１と駆動用コイル２３とは所定の隙間をあけた状態で対向配置されている。具体的には、支点突起１５ｂを支点として可動モジュール１２が揺動しても、駆動用磁石２１と駆動用コイル２３とが接触しないように、駆動用磁石２１と駆動用コイル２３とが所定の隙間をあけた状態で対向配置されている。   As shown in FIG. 2, the driving magnet 21 and the driving coil 23 are arranged to face each other with a predetermined gap. Specifically, the drive magnet 21 and the drive coil 23 are set in a predetermined manner so that the drive magnet 21 and the drive coil 23 do not come into contact with each other even when the movable module 12 swings around the fulcrum protrusion 15b. Oppositely arranged with a gap.

上述のように、カバー部材９の左右の側面に固定される駆動用磁石２１の外側面は、下方向に向かうにしたがって左右方向の外側へ緩やかに広がるように傾斜し、カバー部材９の前後の側面に固定される駆動用磁石２１の外側面は、下方向に向かうにしたがって前後方向の外側へ緩やかに広がるように傾斜している。そのため、駆動用磁石２１と駆動用コイル２３との隙間は、下方向に向かうにしたがって狭くなっている。   As described above, the outer surface of the driving magnet 21 fixed to the left and right side surfaces of the cover member 9 is inclined so as to gradually spread outward in the left-right direction as it goes downward, The outer surface of the driving magnet 21 fixed to the side surface is inclined so as to gradually spread outward in the front-rear direction as it goes downward. For this reason, the gap between the driving magnet 21 and the driving coil 23 becomes narrower in the downward direction.

また、本形態では、図２に示すように、上下方向における駆動用コイル２３の中心位置が第１磁石片２１ａと第２磁石片２１ｂとの当接面よりも上側に配置されるように、駆動用磁石２１と駆動用コイル２３とが対向配置されている。   Further, in the present embodiment, as shown in FIG. 2, the center position of the driving coil 23 in the vertical direction is arranged above the contact surface between the first magnet piece 21a and the second magnet piece 21b. The driving magnet 21 and the driving coil 23 are arranged to face each other.

以上のように構成された撮影用光学装置１では、センサ４で手振れが検出されると、センサ４での検出結果に基づいて、駆動用コイル２３に電流が供給され、可動モジュール１２が支点突起１５ａを中心に揺動して、手振れが補正される。なお、本形態では、揺動駆動機構６、板バネ１７、当接面１１ａおよび支点突起１５ｂによって、センサ４での検出結果に基づいてレンズ駆動装置２を揺動させて手振れを補正する手振れ補正機構が構成されている。   In the photographic optical device 1 configured as described above, when camera shake is detected by the sensor 4, current is supplied to the drive coil 23 based on the detection result of the sensor 4, and the movable module 12 is supported by the fulcrum protrusion. The camera shake is corrected by swinging about 15a. In this embodiment, camera shake correction is performed in which the lens driving device 2 is swung by the swing drive mechanism 6, the leaf spring 17, the contact surface 11a, and the fulcrum projection 15b based on the detection result of the sensor 4 to correct camera shake. The mechanism is configured.

（本形態の主な効果）
以上説明したように、本形態では、駆動用コイル２３と対向する駆動用磁石２１の側面に、Ｎ極とＳ極との２極の磁極が形成されている。そのため、駆動用コイル２３と対向する駆動用磁石２１の側面にＮ極あるいはＳ極のいずれか１極の磁極が形成されている場合と比較して、駆動用コイル２３を有効に利用することができる。すなわち、略長方形状に巻回される駆動用コイル２３の上下端を構成する２本の長辺部分を利用して揺動駆動機構６の駆動力を発生させることができる。したがって、本形態では、揺動駆動機構６の駆動力を向上させることができ、撮影用光学装置１が小型化、薄型化する場合であっても、レンズ駆動装置２を揺動させるための十分な駆動力を得ることが可能になる。 (Main effects of this form)
As described above, in this embodiment, the two magnetic poles of the N pole and the S pole are formed on the side surface of the driving magnet 21 facing the driving coil 23. Therefore, it is possible to effectively use the driving coil 23 as compared with the case where one of the N pole and the S pole is formed on the side surface of the driving magnet 21 facing the driving coil 23. it can. That is, the driving force of the swing drive mechanism 6 can be generated using the two long side portions constituting the upper and lower ends of the drive coil 23 wound in a substantially rectangular shape. Therefore, in this embodiment, the driving force of the swing drive mechanism 6 can be improved, and even when the photographing optical device 1 is reduced in size and thickness, sufficient for swinging the lens drive device 2. It becomes possible to obtain a sufficient driving force.

また、本形態では、駆動用コイル２３と対向する駆動用磁石２１の側面に、２極の磁極が形成されているため、１個の駆動用磁石２１に対して１個の駆動用コイル２３を対向させることで、駆動用コイル２３を有効に利用しつつ、揺動駆動機構６の駆動力を向上させることができる。したがって、撮影用光学装置１の構成を簡素化することができる。   In this embodiment, since two magnetic poles are formed on the side surface of the driving magnet 21 facing the driving coil 23, one driving coil 23 is attached to one driving magnet 21. By making them face each other, it is possible to improve the driving force of the swing driving mechanism 6 while effectively using the driving coil 23. Therefore, the configuration of the photographing optical device 1 can be simplified.

本形態では、カバー部材９の周方向で隣り合う駆動用磁石２１の磁極が異なるように、駆動用磁石２１は、カバー部材９の側面に固定されている。そのため、図３の矢印Ａ１で示すように、周方向で隣り合う駆動用磁石２１間に磁路が形成されやすくなる。すなわち、図４に示すように、カバー部材９９の周方向で隣り合う駆動用磁石２１の磁極が同じになるように、駆動用磁石２１がカバー部材９９の側面に固定されていると、矢印Ａ１０で示すように、一方の駆動用磁石２１から発生する磁力線と、他方の駆動用磁石２１から発生する磁力線とがぶつかりあって、周方向で隣り合う駆動用磁石２１間に磁路が形成されにくくなるが、本形態では、図３に示すように、周方向で隣り合う駆動用磁石２１間に磁路が形成されやすくなる。したがって、揺動駆動機構６の駆動力を効果的に向上させることが可能になる。   In this embodiment, the drive magnet 21 is fixed to the side surface of the cover member 9 so that the magnetic poles of the drive magnets 21 adjacent in the circumferential direction of the cover member 9 are different. Therefore, as indicated by an arrow A1 in FIG. 3, a magnetic path is easily formed between the driving magnets 21 adjacent in the circumferential direction. That is, as shown in FIG. 4, when the driving magnet 21 is fixed to the side surface of the cover member 99 so that the magnetic poles of the driving magnets 21 adjacent in the circumferential direction of the cover member 99 are the same, the arrow A10 As shown, the magnetic lines of force generated from one driving magnet 21 and the magnetic lines of force generated from the other driving magnet 21 collide, and it is difficult to form a magnetic path between the driving magnets 21 adjacent in the circumferential direction. However, in this embodiment, as shown in FIG. 3, a magnetic path is easily formed between the drive magnets 21 adjacent in the circumferential direction. Therefore, the driving force of the swing drive mechanism 6 can be effectively improved.

本形態では、カバー部材９の、周方向で隣り合う側面は、互いに上下方向の全域において周方向で繋がっている。そのため、図３の矢印Ａ２で示すように、周方向で隣り合う駆動用磁石２１間に磁路が形成されやすくなる。すなわち、図４に示すように、カバー部材９９の、周方向で隣り合う側面の間にスリット１００が形成されていると、周方向で隣り合う駆動用磁石２１間に磁路が形成されにくくなるが、本形態では、図３に示すように、周方向で隣り合う駆動用磁石２１間に磁路が形成されやすくなる。したがって、揺動駆動機構６の駆動力を効果的に向上させることが可能になる。   In this embodiment, the side surfaces adjacent to each other in the circumferential direction of the cover member 9 are connected to each other in the circumferential direction in the entire area in the vertical direction. Therefore, as indicated by an arrow A2 in FIG. 3, a magnetic path is easily formed between the drive magnets 21 adjacent in the circumferential direction. That is, as shown in FIG. 4, when the slit 100 is formed between the side surfaces adjacent to each other in the circumferential direction of the cover member 99, it is difficult to form a magnetic path between the driving magnets 21 adjacent in the circumferential direction. However, in this embodiment, as shown in FIG. 3, a magnetic path is easily formed between the drive magnets 21 adjacent in the circumferential direction. Therefore, the driving force of the swing drive mechanism 6 can be effectively improved.

なお、本願発明者の検討によると、駆動用コイル２３と対向する駆動用磁石２１の側面に１極の磁極が形成されている場合と比較して、駆動用コイル２３と対向する駆動用磁石２１の側面に、２極の磁極が形成されていると、揺動駆動機構６の駆動力を１４４％向上させることができる。   According to the study of the present inventor, the driving magnet 21 facing the driving coil 23 is compared with the case where a single magnetic pole is formed on the side surface of the driving magnet 21 facing the driving coil 23. If the two-pole magnetic pole is formed on the side surface, the driving force of the swing drive mechanism 6 can be improved by 144%.

また、本願発明者の検討によると、カバー部材９の周方向で隣り合う駆動用磁石２１の磁極が同じになるように、駆動用磁石２１がカバー部材９の側面に固定されている場合と比較して、カバー部材９の周方向で隣り合う駆動用磁石２１の磁極が異なるように、駆動用磁石２１がカバー部材９の側面に固定されていると、揺動駆動機構６の駆動力を７％向上させることができる。   Further, according to the study of the present inventor, compared with the case where the drive magnet 21 is fixed to the side surface of the cover member 9 so that the magnetic poles of the drive magnets 21 adjacent in the circumferential direction of the cover member 9 are the same. When the driving magnet 21 is fixed to the side surface of the cover member 9 so that the magnetic poles of the adjacent driving magnets 21 in the circumferential direction of the cover member 9 are different, the driving force of the swing drive mechanism 6 is 7. % Improvement.

さらに、本願発明者の検討によると、カバー部材９９の、周方向で隣り合う側面の間にスリット１００が形成されている場合と比較して、カバー部材９の、周方向で隣り合う側面が互いに上下方向の全域において周方向で繋がっていると、揺動駆動機構６の駆動力を３％向上させることができる。   Further, according to the study of the present inventor, compared to the case where the slit 100 is formed between the side surfaces adjacent to each other in the circumferential direction of the cover member 99, the side surfaces adjacent to each other in the circumferential direction of the cover member 9 are If they are connected in the circumferential direction in the entire vertical direction, the driving force of the swing drive mechanism 6 can be improved by 3%.

（他の実施の形態）
上述した形態は、本発明の好適な形態の一例ではあるが、これに限定されるものではなく本発明の要旨を変更しない範囲において種々変形実施が可能である。 (Other embodiments)
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention.

上述した形態では、駆動用磁石２１は、第１磁石片２１ａと第２磁石片２１ｂとの２個の磁石片によって構成されている。この他にもたとえば、駆動用磁石２１は、１個の磁石片によって構成されても良い。この場合には、駆動用磁石２１の両面のそれぞれにおいて、上下方向で重なる２極の磁極が形成されるように、１個の磁石片が着磁される。   In the embodiment described above, the drive magnet 21 is constituted by two magnet pieces, the first magnet piece 21a and the second magnet piece 21b. In addition to this, for example, the drive magnet 21 may be configured by a single magnet piece. In this case, one magnet piece is magnetized so that two poles overlapping in the vertical direction are formed on both surfaces of the drive magnet 21.

上述した形態では、駆動用磁石２１の両面のそれぞれに、上下方向で重なるように２極の磁極が形成されている。この他にもたとえば、駆動用磁石２１の両面のそれぞれに、３極以上の磁極が形成されても良い。   In the embodiment described above, two magnetic poles are formed on both surfaces of the drive magnet 21 so as to overlap in the vertical direction. In addition, for example, three or more magnetic poles may be formed on both surfaces of the drive magnet 21.

上述した形態では、駆動用磁石２１がカバー部材９に取り付けられ、駆動用コイル２３がケース体１６に取り付けられている。この他にもたとえば、駆動用磁石２１がヨークを介してケース体１６に取り付けられ、駆動用コイル２３がカバー部材９に取り付けられても良い。なお、ケース体１６が磁性材料で形成されているのではあれば、駆動磁石２１はケース体１６に直接、取り付けられても良い。   In the embodiment described above, the drive magnet 21 is attached to the cover member 9, and the drive coil 23 is attached to the case body 16. In addition, for example, the driving magnet 21 may be attached to the case body 16 via a yoke, and the driving coil 23 may be attached to the cover member 9. If the case body 16 is formed of a magnetic material, the drive magnet 21 may be directly attached to the case body 16.

上述した形態では、カバー部材９の、周方向で隣り合う側面は、互いに上下方向の全域において周方向で繋がっている。この他にもたとえば、カバー部材９の、周方向で隣り合う側面が、互いに上下方向の一部において周方向で繋がっていても良い。また、上述した形態では、カバー部材９の全側面が周方向で繋がっているが、任意に選択される２枚または３枚の側面のみが周方向で繋がっていても良い。   In the embodiment described above, the side surfaces adjacent to each other in the circumferential direction of the cover member 9 are connected to each other in the circumferential direction in the entire area in the vertical direction. In addition to this, for example, side surfaces adjacent to each other in the circumferential direction of the cover member 9 may be connected to each other in a part in the vertical direction in the circumferential direction. Moreover, in the form mentioned above, although all the side surfaces of the cover member 9 are connected in the circumferential direction, only the 2 or 3 side surfaces selected arbitrarily may be connected in the circumferential direction.

なお、上述した形態では、カバー部材９の周方向で隣り合う駆動用磁石２１の磁極が異なるように、駆動用磁石２１は、カバー部材９の側面に固定されているが、カバー部材９の周方向で隣り合う駆動用磁石２１の磁極が同じになるように、駆動用磁石２１がカバー部材９の側面に固定されても良い。また、上述した形態では、カバー部材９は、略四角筒状に形成されているが、カバー部材９は、四角筒以外の多角筒状に形成されても良い。また、カバー部材９は、円筒状に形成されても良い。   In the embodiment described above, the driving magnet 21 is fixed to the side surface of the cover member 9 so that the magnetic poles of the adjacent driving magnets 21 in the circumferential direction of the cover member 9 are different. The drive magnet 21 may be fixed to the side surface of the cover member 9 so that the magnetic poles of the drive magnets 21 adjacent in the direction are the same. Moreover, in the form mentioned above, although the cover member 9 is formed in the substantially square cylinder shape, the cover member 9 may be formed in polygonal cylinder shapes other than a square cylinder. Further, the cover member 9 may be formed in a cylindrical shape.

本発明の実施の形態にかかる撮影用光学装置の斜視図である。1 is a perspective view of a photographic optical device according to an embodiment of the present invention. 図１のＥ−Ｅ断面の断面図である。It is sectional drawing of the EE cross section of FIG. 図１のＦ−Ｆ断面の構成要素の一部を示す斜視図である。It is a perspective view which shows a part of component of the FF cross section of FIG. 図１に示す撮影用光学装置の効果を説明するための図である。It is a figure for demonstrating the effect of the optical device for imaging | photography shown in FIG.

符号の説明Explanation of symbols

１ 撮影用光学装置
２ レンズ駆動装置
４ センサ
６ 揺動駆動機構
９ カバー部材（磁石保持部材）
２１ 駆動用磁石
２３ 駆動用コイル DESCRIPTION OF SYMBOLS 1 Optical device for imaging | photography 2 Lens drive device 4 Sensor 6 Oscillation drive mechanism 9 Cover member (magnet holding member)
21 Driving magnet 23 Driving coil

Claims (2)

レンズと撮像素子と前記レンズを駆動するレンズ駆動機構とを搭載したレンズ駆動装置と、前記レンズ駆動装置の傾き角速度を検出するセンサと、互いに対向配置される駆動用コイルと駆動用磁石とを有し前記センサでの検出結果に基づいて前記レンズ駆動装置を揺動させて手振れを補正する手振れ補正機構と、前記駆動用磁石を保持する磁石保持部材とを備え、
前記磁石保持部材は、磁性材料で形成されるとともに、前記レンズ駆動装置の外周側を覆う４つの側面を有する底付きの略四角筒状に形成され、
前記磁石保持部材の周方向で隣り合う前記側面同士は、前記磁石保持部材の軸方向の全域において前記周方向で互いに繋がっており、
前記磁石保持部材は、前記軸方向における前記側面の一端から前記磁石保持部材の内周側に向かって形成される底部と、前記軸方向における前記側面の他端から前記磁石保持部材の外周側に向かって広がるように形成される鍔部とを備え、
前記駆動用磁石の前記駆動用コイルとの対向面には、前記軸方向で重なるように２極の磁極が形成され、
前記駆動用磁石は、前記周方向で隣り合う前記駆動用磁石の磁極が異なるように、４つの前記側面のそれぞれの外側に固定されていることを特徴とする撮影用光学装置。 A lens driving device including a lens, an image sensor, and a lens driving mechanism that drives the lens; a sensor that detects an inclination angular velocity of the lens driving device; a driving coil and a driving magnet that are arranged to face each other; And a camera shake correction mechanism that corrects camera shake by swinging the lens driving device based on a detection result of the sensor, and a magnet holding member that holds the driving magnet .
The magnet holding member is formed of a magnetic material and is formed in a substantially rectangular tube shape with a bottom having four side surfaces covering the outer peripheral side of the lens driving device,
The side surfaces adjacent to each other in the circumferential direction of the magnet holding member are connected to each other in the circumferential direction in the entire axial direction of the magnet holding member,
The magnet holding member has a bottom formed from one end of the side surface in the axial direction toward the inner peripheral side of the magnet holding member, and from the other end of the side surface in the axial direction to the outer peripheral side of the magnet holding member. And a buttock formed so as to spread toward the
On the surface of the drive magnet facing the drive coil, two magnetic poles are formed so as to overlap in the axial direction,
The photographic optical device , wherein the driving magnet is fixed to the outside of each of the four side surfaces so that magnetic poles of the driving magnets adjacent in the circumferential direction are different . 前記レンズ駆動装置を支持するとともに、前記駆動用コイルが固定される支持体を備えることを特徴とする請求項１記載の撮影用光学装置。The photographing optical device according to claim 1, further comprising a support body that supports the lens driving device and to which the driving coil is fixed.
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US12/579,136 US8279289B2 (en) 2008-10-14 2009-10-14 Optical unit with shake correcting function

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