JP2009098188A

JP2009098188A - Imaging device

Info

Publication number: JP2009098188A
Application number: JP2007266741A
Authority: JP
Inventors: Yosuke Suzuki; 洋輔鈴木; Shigeru Irisawa; 茂入沢
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2007-10-12
Filing date: 2007-10-12
Publication date: 2009-05-07
Anticipated expiration: 2027-10-12
Also published as: JP5100300B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging device provided with an image deflection correction function and capable of adjusting a fixing position when assembling this imaging device easily and reducing thickness of the whole imaging device. <P>SOLUTION: In this imaging device, a CCD stage 102 is roughly composed of a Y-direction stage 12 having a substantially rectangular shape, an X-direction stage 13 having a substantially rectangular shape, and a plate-like loading stage 14 being substantially rectangular. A holding mechanism is arranged on an imaging light incoming side of the CCD stage 102. A fixing member 11 is arranged on the opposite side to the imaging light incoming side for the holding mechanism and the CCD stage 102 and on the opposite side to the imaging light incoming side for a CCD 101 and the holding mechanism. The Y-direction stage 12 is fixed on a surface on an imaging light incoming side of the fixing member 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、デジタルカメラなどの撮像装置、特に、像振れ補正機能を有する撮像装置に関する。 The present invention relates to an imaging apparatus such as a digital camera, and more particularly to an imaging apparatus having an image blur correction function.

近年、デジタルカメラは小型・軽量化が進んでいる。また、撮像素子の撮像面上での被写体像のぶれが問題とされている。この被写体像のぶれは、撮影者の手振れや被写体の移動などにより起こる。 In recent years, digital cameras have become smaller and lighter. In addition, blurring of the subject image on the imaging surface of the image sensor is a problem. This blurring of the subject image occurs due to camera shake of the photographer or movement of the subject.

上記被写体像のぶれを解決する手段として、被写体像の移動に撮像素子を追従させることにより、被写体像のぶれが補正された被写体の画像を撮影することができる像振れ補正機能を持つデジタルカメラがある。 As a means for solving the above-mentioned blur of the subject image, there is a digital camera having an image blur correction function capable of shooting a subject image in which the blur of the subject image is corrected by causing the image sensor to follow the movement of the subject image. is there.

従来の像振れ補正機能を有する撮像装置の一例には特許文献１がある。特許文献１のデジタルカメラには、撮像素子としてのＣＣＤが、撮影光軸上でレンズ鏡筒を収容する固定筒の一端に設けられた載置ステージに搭載され、この載置ステージが、撮影光軸ΦをＺ軸方向としてこれに垂直なＸ−Ｙ平面内で移動可能に設けられ、永久磁石とこれに対向するコイルが形成する磁力により可動される構造のものが知られている。このカメラでは、手振れ検出センサを用いてＹ方向とＸ方向との傾きを検出し、この検出出力に基づいて、コイルへの通電電流を変化させることにより、撮影者の手振れや被写体の移動などによる被写体の像の移動にＣＣＤを追従移動させる制御を行っている。また、このカメラでは、コイルへの通電電流によって消費電力が増大するという問題がある。 Patent Document 1 is an example of an imaging apparatus having a conventional image blur correction function. In the digital camera of Patent Document 1, a CCD as an image sensor is mounted on a mounting stage provided at one end of a fixed cylinder that accommodates a lens barrel on a shooting optical axis. There is known a structure that is provided so as to be movable in an XY plane perpendicular to the axis Φ as the Z-axis direction and that is movable by a magnetic force formed by a permanent magnet and a coil facing the permanent magnet. In this camera, a camera shake detection sensor is used to detect the tilt between the Y direction and the X direction, and based on this detection output, the current applied to the coil is changed, thereby causing a camera shake of the photographer or movement of the subject. Control is performed to move the CCD following the movement of the subject image. In addition, this camera has a problem that power consumption increases due to an energization current to the coil.

特許文献１の課題である消費電力の増大について、本願出願人は、所定の位置に撮像素子を機械的に固定保持する保持機構が設けられた像振れ補正機能付きカメラについて出願を行っている（特許文献２参照）。このカメラの保持機構によれば、像振れ補正が行われていない時の消費電力を低減することができる。
特開２００４−２７４２４２号公報特開２００７−１０２０６２号公報 Regarding the increase in power consumption, which is a problem of Patent Document 1, the present applicant has filed an application for a camera with an image blur correction function provided with a holding mechanism for mechanically fixing and holding an image sensor at a predetermined position ( Patent Document 2). According to this camera holding mechanism, it is possible to reduce power consumption when image blur correction is not performed.
JP 2004-274242 A JP 2007-102062 A

特許文献２に記載の像振れ補正機能付きカメラでは、押さえピン３３を備えた強制押さえ板２６がＣＣＤステージ１０２に対して被写体と反対側、つまり、撮影者側に設けられ、強制押さえ板２６は固定部材１１に対して離反接近する方向（Ｚ軸方向）に往復動される。押さえピン（嵌合突起）３３は撮影者側から撮影光入射側へ移動し、凹所（嵌合穴）１９ａと嵌合することにより前記撮像素子載置部材１５を機械的に所定の位置に保持させる役割を果たす。しかし、ＣＣＤステージ１０２よりも撮影者側において強制押さえ板２６が往復動する為のスペースが必要であり、カメラ全体の厚さが厚くなってしまう。 In the camera with an image blur correction function described in Patent Document 2, a forced pressing plate 26 having a pressing pin 33 is provided on the opposite side of the subject from the CCD stage 102, that is, on the photographer side. It is reciprocated in a direction (Z-axis direction) that moves away from and approaches the fixing member 11. The holding pin (fitting protrusion) 33 moves from the photographer side to the photographing light incident side and engages with the recess (fitting hole) 19a to mechanically place the image sensor mounting member 15 at a predetermined position. It plays a role to hold. However, a space is required for the forced pressing plate 26 to reciprocate on the photographer side with respect to the CCD stage 102, and the thickness of the entire camera is increased.

また、固定部材１１と、強制押さえ板２６を駆動するステッピングモータＳＴＭ１は固定筒１０に別個に固定されている。ステッピングモータＳＴＭ１は変換機構２２を含む多数の部品を介して強制押さえ板２６を往復動させる。しかし、撮像素子の光学的な中心が原点と一致する所定の位置において押さえピン（嵌合突起）３３を凹所（嵌合穴）１９ａと嵌合させる為には、高い組み立て精度が要求される。 Further, the fixing member 11 and the stepping motor STM1 for driving the forced pressing plate 26 are separately fixed to the fixed cylinder 10. The stepping motor STM1 reciprocates the forced presser plate 26 via a number of parts including the conversion mechanism 22. However, high assembly accuracy is required to fit the pressing pin (fitting protrusion) 33 with the recess (fitting hole) 19a at a predetermined position where the optical center of the image sensor coincides with the origin. .

本発明は、上記の問題に鑑みて為されたもので、組み立て時の固定位置調整が容易で、撮像装置全体の厚みを薄くすることができる像振れ補正機能付き撮像装置を提供することを課題としている。 The present invention has been made in view of the above problems, and it is an object of the present invention to provide an imaging apparatus with an image blur correction function that can easily adjust the fixed position during assembly and can reduce the thickness of the entire imaging apparatus. It is said.

上記課題の少なくとも一部を解決するため、請求項１に係る発明の撮像装置は、光軸を持つ撮像光学系により被写体像が結像される撮像素子と、前記撮像素子を前記光軸に直交する平面内で移動自在に支持する撮像素子移動部と、前記撮像素子を所定の位置に固定保持する保持機構と、前記撮像素子移動部を撮像装置に固定する固定部と、を備え、前記固定部は、前記撮像素子および前記保持機構に対して撮影光入射側とは反対側に設けられ、前記保持機構は、前記撮像素子移動部に固定されることを特徴とする。 In order to solve at least a part of the above problems, an imaging device according to a first aspect of the present invention is an imaging device in which a subject image is formed by an imaging optical system having an optical axis, and the imaging device is orthogonal to the optical axis. An imaging element moving unit that is movably supported within a plane, a holding mechanism that fixes and holds the imaging element at a predetermined position, and a fixing unit that fixes the imaging element moving unit to the imaging apparatus. The unit is provided on a side opposite to the imaging light incident side with respect to the imaging element and the holding mechanism, and the holding mechanism is fixed to the imaging element moving unit.

また、請求項２に係る発明の撮像装置は、請求項１に記載の撮像装置であって、前記保持機構を駆動する保持機構駆動部を備え、前記保持機構駆動部が、前記撮像素子移動部と、前記保持機構とに固定されることを特徴とする。 An imaging apparatus according to a second aspect of the present invention is the imaging apparatus according to the first aspect, further comprising a holding mechanism driving unit that drives the holding mechanism, wherein the holding mechanism driving unit is configured to move the imaging element moving unit. And the holding mechanism.

また、請求項３に係る発明の撮像装置は、請求項１または２に記載の撮像装置であって、前記保持機構が、前記固定部材に対して撮影光入射側に配置されることを特徴とする。 An imaging apparatus according to a third aspect of the present invention is the imaging apparatus according to the first or second aspect, wherein the holding mechanism is disposed on the photographing light incident side with respect to the fixing member. To do.

また、請求項４に係る発明の撮像装置は、請求項１ないし請求項３のいずれか１項に記載の撮像装置であって、前記保持機構駆動部を駆動することにより、前記保持機構が前記撮像素子載置部材から離間し、前記撮像素子移動部が移動可能になることを特徴とする。 An imaging apparatus according to a fourth aspect of the present invention is the imaging apparatus according to any one of the first to third aspects, wherein the holding mechanism is driven by driving the holding mechanism driving unit. The imaging element moving member is movable away from the imaging element mounting member.

また、請求項５に係る発明の撮像装置は、請求項１ないし請求項４のいずれか１項に記載の撮像装置であって、前記保持機構が第一の連結部を備え、前記撮像素子載置部材が第二の連結部を備え、前記第一の連結部と前記第二の連結部が連結することにより、前記保持機構が前記撮像素子を固定保持することを特徴とする。 An image pickup apparatus according to a fifth aspect of the present invention is the image pickup apparatus according to any one of the first to fourth aspects, wherein the holding mechanism includes a first connecting portion, and the image pickup device is mounted. The placing member includes a second connecting portion, and the holding mechanism fixes and holds the image sensor when the first connecting portion and the second connecting portion are connected.

また、請求項６に係る発明の撮像装置は、請求項１ないし請求項５のいずれか１項に記載の撮像装置であって、前記第一の連結部と前記第二の連結部が離間することにより、
前記保持機構が前記撮像素子を移動可能にすることを特徴とする。 An imaging device according to a sixth aspect of the present invention is the imaging device according to any one of the first to fifth aspects, wherein the first connecting portion and the second connecting portion are separated from each other. By
The holding mechanism makes the image sensor movable.

また、請求項７に係る発明の撮像装置は、請求項５または６に記載の撮像装置であって、前記第一の連結部が押圧部であり、前記第二の連結部が受圧部であり、前記第一の連結部が前記第二の連結部を押圧することにより、前記保持機構が前記撮像素子を固定保持することを特徴とする。 An imaging device according to a seventh aspect is the imaging device according to the fifth or sixth aspect, wherein the first connecting portion is a pressing portion and the second connecting portion is a pressure receiving portion. The first connecting portion presses the second connecting portion, whereby the holding mechanism fixes and holds the image sensor.

また、請求項８に係る発明の撮像装置は、請求項７に記載の撮像装置であって、前記第一の連結部が前記第二の連結部から離間することにより、前記保持機構が前記撮像素子を移動可能にすることを特徴とする。 An imaging apparatus according to an eighth aspect of the present invention is the imaging apparatus according to the seventh aspect, wherein the holding mechanism is configured to capture the imaging when the first connecting portion is separated from the second connecting portion. The element is movable.

また、請求項９に係る発明の撮像装置は、請求項７または８に記載の撮像装置であって、前記第一の連結部が嵌合穴または嵌合突起のいずれか一方であり、前記嵌合穴または前記嵌合突起のいずれか他方を前記第二の連結部とし、前記第一の連結部と前記第二の連結部が嵌合することにより、前記保持機構が前記撮像素子を固定保持することを特徴とする。 An imaging device according to a ninth aspect of the present invention is the imaging device according to the seventh or eighth aspect, wherein the first connecting portion is either a fitting hole or a fitting projection, and the fitting Either the fitting hole or the fitting protrusion is used as the second connecting portion, and the holding mechanism fixes and holds the imaging element by fitting the first connecting portion and the second connecting portion. It is characterized by doing.

また、請求項１０に係る発明の撮像装置は、請求項９に記載の撮像装置であって、前記第一の連結部と前記第二の連結部が離間することにより、前記保持機構が前記撮像素子を移動可能にすることを特徴とする。 The image pickup apparatus according to a tenth aspect of the present invention is the image pickup apparatus according to the ninth aspect, wherein the holding mechanism causes the image pickup to be performed when the first connecting portion and the second connecting portion are separated from each other. The element is movable.

また、請求項１１に係る発明の撮像装置は、光軸を持つ撮像光学系により被写体像が結像される撮像素子と、前記撮像素子を前記光軸に直交する平面内で移動自在に支持する撮像素子移動部と、前記撮像素子を所定の位置に固定保持する保持機構と、前記撮像素子移動部を撮像装置に固定する固定部と、を備え、前記固定部は、前記撮像素子および前記保持機構に対して撮影光入射側とは反対側に設けられることを特徴とする。 An image pickup apparatus according to an eleventh aspect of the invention supports an image pickup element on which a subject image is formed by an image pickup optical system having an optical axis, and the image pickup element movably in a plane orthogonal to the optical axis. An image sensor moving unit; a holding mechanism that fixes and holds the image sensor at a predetermined position; and a fixing unit that fixes the image sensor moving unit to the imaging device. The fixing unit includes the image sensor and the holding unit. The mechanism is provided on the side opposite to the photographing light incident side.

また、請求項１２に係る発明の撮像装置は、光軸を持つ撮像光学系により被写体像が結像される撮像素子と、前記撮像素子を前記光軸に直交する平面内で移動自在に支持する撮像素子移動部と、前記撮像素子を所定の位置に固定保持する保持機構と、前記撮像素子移動部を撮像装置に固定する固定部と、前記保持機構を駆動する保持機構駆動部と、を備え、前記保持機構駆動部が、前記撮像素子移動部に固定されることを特徴とする。 An image pickup apparatus according to a twelfth aspect of the present invention supports an image pickup element on which a subject image is formed by an image pickup optical system having an optical axis, and the image pickup element movably in a plane orthogonal to the optical axis. An image sensor moving unit; a holding mechanism that fixes and holds the image sensor at a predetermined position; a fixing unit that fixes the image sensor moving unit to the imaging device; and a holding mechanism driving unit that drives the holding mechanism. The holding mechanism driving unit is fixed to the imaging element moving unit.

また、請求項１３に係る発明の撮像装置は、請求項１ないし１２のいずれか１項に記載の撮像装置であって、前記撮像光学系を構成し、所定の光学素子可動領域において前記撮像素子移動部に対し近接離間可能に支持された光学素子を備え、前記所定の光学素子可動領域において前記光学素子が前記撮像素子移動部に対し光軸方向に最も接近する最接近位置にある時は、前記保持機構が前記撮像素子載置部材を固定保持して前記所定の位置に前記撮像素子を固定保持することを特徴とする。 An image pickup apparatus according to a thirteenth aspect of the present invention is the image pickup apparatus according to any one of the first to twelfth aspects, wherein the image pickup optical system is configured to form the image pickup element in a predetermined optical element movable region. An optical element supported so as to be able to approach and move away from the moving unit, and when the optical element is at the closest position in the optical axis direction to the imaging element moving unit in the predetermined optical element movable region, The holding mechanism fixes and holds the image sensor mounting member to fix and hold the image sensor at the predetermined position.

また、請求項１４に係る発明の撮像装置は、請求項１３に記載の撮像装置であって、前記光学素子が前記最接近位置にない時に、前記保持機構が前記最接近位置よりも撮影光入射側の領域に進入することを特徴とする。 An imaging device according to a fourteenth aspect of the present invention is the imaging device according to the thirteenth aspect, wherein the holding mechanism is more incident than the closest position when the optical element is not in the closest position. It is characterized by entering a side area.

本発明によれば、固定部材が、撮像素子載置部材、保持機構および保持機構駆動部に対し撮影光入射側と反対側に配置されているので、固定部材に対して撮影光入射側と反対側に配置される部品が減り、撮像装置全体の厚みを薄くすることができる。さらに、保持機構が撮像素子載置部材を固定保持して所定の位置に撮像素子を固定保持するので、撮像素子を所定の位置に維持する為にコイルに通電し続ける必要が無く、消費電力を低減できる。 According to the present invention, since the fixing member is disposed on the opposite side to the imaging light incident side with respect to the imaging element mounting member, the holding mechanism, and the holding mechanism driving unit, the fixing member is opposite to the imaging light incident side. The number of parts arranged on the side is reduced, and the thickness of the entire imaging apparatus can be reduced. Furthermore, since the holding mechanism fixes and holds the image sensor mounting member and holds the image sensor in a predetermined position, there is no need to continue energizing the coil in order to maintain the image sensor in a predetermined position. Can be reduced.

本発明によれば、保持機構が撮像素子移動部に固定されるので、撮像素子移動部とその他の部品の間の固定位置の誤差による保持機構と撮像素子載置部材との間の固定位置への影響が少なく、組み立て時の保持機構の固定位置調整が容易である。 According to the present invention, since the holding mechanism is fixed to the imaging device moving unit, the holding mechanism is moved to a fixed position between the imaging device mounting member and the imaging device mounting member due to an error in the fixing position between the imaging device moving unit and other components. It is easy to adjust the fixing position of the holding mechanism during assembly.

本発明によれば、保持機構駆動部が撮像素子移動部と、保持機構とに固定されているので、組み立て時の保持機構駆動部の固定位置調整が容易である。 According to the present invention, since the holding mechanism driving unit is fixed to the imaging element moving unit and the holding mechanism, it is easy to adjust the fixing position of the holding mechanism driving unit during assembly.

本発明によれば、保持機構駆動部を駆動することにより、保持機構が撮像素子載置部材から離間し、撮像素子載置部材が移動可能になるので、像振れ補正が必要な際に直ちにかつ適切に像振れ補正を開始することができる。 According to the present invention, by driving the holding mechanism driving unit, the holding mechanism is separated from the image sensor mounting member, and the image sensor mounting member can be moved, so that when image blur correction is necessary, Image blur correction can be started appropriately.

本発明によれば、所定の光学素子可動領域において撮像素子載置部材に対し近接離間可能に設けられた光学素子を備え、所定の光学素子可動領域において光学素子が撮像素子載置部材に対し光軸方向に最も接近する最接近位置にある時は、保持機構が撮像素子載置部材を固定保持して所定の位置に撮像素子を固定保持するので、保持機構が動作する空間を確保する為に光学素子の最接近位置を撮像素子から十分に離間させる必要が無くなる。よって、撮像装置全体の厚みをさらに薄くすることができる。 According to the present invention, the optical element is provided so as to be able to approach and separate from the imaging element mounting member in a predetermined optical element movable area, and the optical element is light-transmitted to the imaging element mounting member in the predetermined optical element movable area. In order to secure a space for the holding mechanism to operate, the holding mechanism fixes and holds the imaging element mounting member and holds the imaging element in a predetermined position when it is at the closest position in the axial direction. There is no need to sufficiently separate the closest approach position of the optical element from the imaging element. Therefore, the thickness of the entire imaging apparatus can be further reduced.

本発明によれば、光学素子が最接近位置にない時に、保持機構が最接近位置よりも撮影光入射側の領域に進入するので、光学素子が被写体方向（撮影光入射方向）へ離間した後にできるスペース内に保持機構が進入することができ、カメラ全体の撮影光軸方向の厚さをより薄くすることができる。 According to the present invention, when the optical element is not in the closest position, the holding mechanism enters the region on the photographing light incident side from the closest position, so that the optical element is separated in the subject direction (photographing light incident direction). The holding mechanism can enter the space that can be created, and the thickness of the entire camera in the direction of the optical axis of the photographing can be made thinner.

以下に、本発明に係わる像振れ補正機能を有する撮像装置を図面を参照しつつ説明する。 An image pickup apparatus having an image blur correction function according to the present invention will be described below with reference to the drawings.

図１は本発明に係る撮像装置としてのデジタルカメラ（以下、カメラともいう）の一例を示す正面図である。 FIG. 1 is a front view showing an example of a digital camera (hereinafter also referred to as a camera) as an imaging apparatus according to the present invention.

図１に、撮影光入射側から見た、カメラ１の正面図を示す。カメラ１の正面には、ストロボ発光部３、光学ファインダ４、測距ユニット５、リモートコントロール受光部６が設けられている。カメラ１の上面には、レリーズスイッチ（レリーズシャッター）ＳＷ１、モードダイアルＳＷ２が配設されている。カメラ本体の側面にはメモリカード／電池装填室の蓋２が設けられている。カメラ本体の背面には、撮影者が撮影操作前に被写体を確認する為の表示部である液晶ディスプレイ（図示無し）が設けられている。これらの各部材の機能及び作用は公知であるので、その説明は省略することにする。 FIG. 1 shows a front view of the camera 1 as seen from the photographing light incident side. In front of the camera 1, a strobe light emitting unit 3, an optical finder 4, a distance measuring unit 5, and a remote control light receiving unit 6 are provided. On the upper surface of the camera 1, a release switch (release shutter) SW1 and a mode dial SW2 are arranged. A memory card / battery loading chamber lid 2 is provided on the side of the camera body. A liquid crystal display (not shown), which is a display unit for a photographer to check a subject before photographing operation, is provided on the back of the camera body. Since the function and action of each of these members are known, the description thereof will be omitted.

カメラ１の正面には、撮影レンズと固定筒１０を含む鏡胴ユニット７も設けられている。鏡胴ユニット７については、後述する。 A lens barrel unit 7 including a photographing lens and a fixed tube 10 is also provided on the front of the camera 1. The lens barrel unit 7 will be described later.

次に、カメラ内部の像振れ補正部のメカニカルな構成について説明する。図２は固定筒１０の縦断面図であり、図２に示すように、撮影光軸ΦをＺ軸方向としてこれに直交する方向をＸ軸方向、Ｙ軸方向とする。撮影光入射側（撮影光軸方向の被写体向き）は、Ｚ軸方向の負の向きである。図１に示した固定筒１０は、図１におけるカメラ１に、カメラ１から撮影光入射側に延出するよう、カメラ１の撮影光入射側に設けられている。図１および図２に示すように固定筒１０は略円筒形状とし、固定筒１０の内側がレンズ鏡筒受入用の収納空間とされている。固定筒１０には略矩形の板状の固定部材１１が取り付けられている。図２に示すように、固定部材１１は固定筒１０を挟んで被写体と反対側に配置されている。光学素子であるレンズ１２ａ、レンズ１２ｂはレンズ鏡筒（不図示）によって支持され、レンズ鏡筒は固定筒１０のレンズ鏡筒受入用の収納空間内に設けられている。レンズ１２ｂは、レンズ駆動部（図示無し）により撮影光軸方向に可動可能に設けられている。撮像素子であるＣＣＤ１０１は、レンズ１２ａ、レンズ１２ｂを含む撮影光学系によって結像された被写体像を光電変換して撮像信号に変換する。撮影操作前にＣＣＤ１０１が出力する撮像信号に基づいて、被写体像が液晶ディスプレイに表示される。撮影操作に応じてＣＣＤ１０１が出力する撮像信号に基づいて、画像処理部（図示無し）により撮像データが生成される。撮像データは、記憶媒体（図示無し）に記録される。図２に示すように、撮像素子移動部であるＣＣＤステージ１０２は保持機構を備え、固定部材１１の撮影光入射側の面上に設けられている。 Next, the mechanical configuration of the image blur correction unit inside the camera will be described. FIG. 2 is a longitudinal sectional view of the fixed cylinder 10. As shown in FIG. 2, the photographing optical axis Φ is the Z-axis direction, and the directions orthogonal thereto are the X-axis direction and the Y-axis direction. The photographing light incident side (the subject direction in the photographing optical axis direction) is a negative direction in the Z-axis direction. The fixed tube 10 shown in FIG. 1 is provided on the photographing light incident side of the camera 1 so as to extend from the camera 1 to the photographing light incident side of the camera 1 in FIG. As shown in FIGS. 1 and 2, the fixed cylinder 10 has a substantially cylindrical shape, and the inside of the fixed cylinder 10 is a storage space for receiving a lens barrel. A substantially rectangular plate-shaped fixing member 11 is attached to the fixed cylinder 10. As shown in FIG. 2, the fixing member 11 is disposed on the opposite side of the subject with the fixed cylinder 10 interposed therebetween. The lenses 12a and 12b, which are optical elements, are supported by a lens barrel (not shown), and the lens barrel is provided in the storage space for receiving the lens barrel of the fixed barrel 10. The lens 12b is provided so as to be movable in the photographing optical axis direction by a lens driving unit (not shown). The CCD 101, which is an image sensor, photoelectrically converts a subject image formed by a photographing optical system including the lens 12a and the lens 12b to convert it into an image signal. A subject image is displayed on the liquid crystal display based on the imaging signal output from the CCD 101 before the photographing operation. Imaging data is generated by an image processing unit (not shown) based on an imaging signal output by the CCD 101 in response to a shooting operation. The imaging data is recorded on a storage medium (not shown). As shown in FIG. 2, the CCD stage 102 that is the image sensor moving unit includes a holding mechanism and is provided on the surface of the fixing member 11 on the photographing light incident side.

図３（ａ）はＣＣＤステージ１０２および保持機構の斜視図、図３（ｂ）はＣＣＤステージ１０２および保持機構の上面図である。ＣＣＤステージ１０２は略矩形状のＹ方向ステージ１２と、略矩形状のＸ方向ステージ１３と、略矩形の板状の載置ステージ１４とから大略構成されている。ＣＣＤステージ１０２の撮影光入射側には、保持機構が配置されている。保持機構およびＣＣＤステージ１０２に対して撮影光入射側とは反対側に固定部材１１が配置されている。つまり、ＣＣＤ１０１および保持機構に対して撮影光入射側とは反対側に固定部材１１が配置されている。保持機構については、後に詳述する。 3A is a perspective view of the CCD stage 102 and the holding mechanism, and FIG. 3B is a top view of the CCD stage 102 and the holding mechanism. The CCD stage 102 is roughly composed of a substantially rectangular Y-direction stage 12, a substantially rectangular X-direction stage 13, and a substantially rectangular plate-shaped mounting stage 14. A holding mechanism is disposed on the photographing light incident side of the CCD stage 102. A fixing member 11 is disposed on the side opposite to the photographing light incident side with respect to the holding mechanism and the CCD stage 102. That is, the fixing member 11 is disposed on the opposite side to the photographing light incident side with respect to the CCD 101 and the holding mechanism. The holding mechanism will be described in detail later.

Ｙ方向ステージ１２は固定部材１１の撮影光入射側の面上に固定されている。このＹ方向ステージ１２にはＹ方向に延びる一対のガイド軸１５ａ、１５ｂがＸ方向に間隔を開けて設けられている。図３（ｂ）に示すように、Ｙ方向ステージ１２には永久磁石１６ａが設けられている。 The Y direction stage 12 is fixed on the surface of the fixing member 11 on the photographing light incident side. The Y-direction stage 12 is provided with a pair of guide shafts 15a and 15b extending in the Y direction with a gap in the X direction. As shown in FIG. 3B, the Y-direction stage 12 is provided with a permanent magnet 16a.

Ｘ方向ステージ１３にはＸ方向に延びる一対のガイド軸１７ａ、１７ｂがＹ方向に間隔を開けて設けられている。Ｘ方向ステージ１３には、図３（ｂ）に破線で示す被支承部２００ａ、２００ｂがＸ方向に間隔を開けて形成されている。一対の被支承部２００ａ、２００ｂはＹ方向ステージ１２の一対のガイド軸１５ａ、１５ｂにそれぞれ可動可能に支承され、これによりＸ方向ステージ１３がＹ方向に可動可能とされている。図３（ｂ）に示すように、Ｘ方向ステージ１３には永久磁石１６ｂが設けられている。 The X direction stage 13 is provided with a pair of guide shafts 17a and 17b extending in the X direction with a gap in the Y direction. On the X-direction stage 13, supported portions 200a and 200b indicated by broken lines in FIG. 3B are formed at intervals in the X direction. The pair of supported portions 200a and 200b are supported movably on the pair of guide shafts 15a and 15b of the Y-direction stage 12, respectively, so that the X-direction stage 13 is movable in the Y-direction. As shown in FIG. 3B, the X direction stage 13 is provided with a permanent magnet 16b.

撮像素子載置部材である載置ステージ１４の撮影光入射側には、ＣＣＤ１０１が固定されている。載置ステージ１４には、図３（ｂ）に破線で示す被支承部２０１ａ、２０１ｂがＹ方向に間隔を開けて形成されている。一対の被支承部２０１ａ、２０１ｂはＸ方向ステージ１３の一対のガイド軸１７ａ、１７ｂに可動可能に支承される。これにより載置ステージ１４は全体としてＸ−Ｙ方向に可動可能とされている。載置ステージ１４の撮影光入射側に、受圧部１８が設けられており、受圧部１８には円柱形状の凹所１９ａが形成されている。 The CCD 101 is fixed on the imaging light incident side of the mounting stage 14 that is an imaging element mounting member. On the mounting stage 14, supported portions 201 a and 201 b indicated by broken lines in FIG. 3B are formed at intervals in the Y direction. The pair of supported portions 201 a and 201 b are movably supported on the pair of guide shafts 17 a and 17 b of the X direction stage 13. Thereby, the mounting stage 14 is movable in the XY directions as a whole. A pressure receiving part 18 is provided on the mounting stage 14 on the photographing light incident side, and a cylindrical recess 19 a is formed in the pressure receiving part 18.

Ｘ方向ステージ１３には、コイル取り付け板部２１ａが設けられている。載置ステージ１４には、コイル取り付け板部２１ｂが設けられている。コイル取り付け板部２１ａのＹ方向ステージ１２に対向する側、つまり、撮影光入射側と反対側には、偏平かつ渦巻き状のコイル体２２ａが、Ｙ方向ステージ１２の撮影光入射側の面上に設けられた永久磁石１６ａに対向するように貼り付けられている。コイル取り付け板部２１ｂのＸ方向ステージ１３に対向する側、つまり、撮影光入射側と反対側には、偏平かつ渦巻き状のコイル体２２ｂが、Ｘ方向ステージ１３の撮影光入射側の面上に設けられた永久磁石１６ｂに対向するように貼り付けられている。コイル体２２ａ、２２ｂはそれぞれ永久磁石１６ａ、１６ｂに臨まされている。つまり、コイル体２２ａは、永久磁石１６ａに対して撮影光入射側に配置され、Ｘ方向ステージ１３のコイル取り付け板部２１ａに対して撮影光入射側と反対側に配置されている。コイル体２２ｂは、永久磁石１６ｂに対して撮影光入射側に配置され、載置ステージ１４のコイル取り付け板部２１ｂに対して撮影光入射側と反対側に配置されている。 The X-direction stage 13 is provided with a coil attachment plate portion 21a. The mounting stage 14 is provided with a coil attachment plate portion 21b. On the side facing the Y direction stage 12 of the coil mounting plate 21a, that is, on the side opposite to the photographing light incident side, a flat and spiral coil body 22a is formed on the photographing light incident side surface of the Y direction stage 12. It is stuck so as to face the provided permanent magnet 16a. On the side facing the X direction stage 13 of the coil mounting plate portion 21b, that is, on the side opposite to the photographing light incident side, a flat and spiral coil body 22b is formed on the photographing light incident side surface of the X direction stage 13. It is stuck so as to face the provided permanent magnet 16b. The coil bodies 22a and 22b face the permanent magnets 16a and 16b, respectively. That is, the coil body 22a is disposed on the photographing light incident side with respect to the permanent magnet 16a, and is disposed on the opposite side to the photographing light incident side with respect to the coil mounting plate portion 21a of the X direction stage 13. The coil body 22b is disposed on the photographing light incident side with respect to the permanent magnet 16b, and is disposed on the opposite side to the photographing light incident side with respect to the coil mounting plate portion 21b of the mounting stage 14.

コイル体２２ａ、２２ｂは、コイル給電回路（図示無し）から電力を供給され、Ｘ方向およびＹ方向にＣＣＤ１０１及び載置ステージ１４を移動させる。本実施例では、コイル体２２ａは、コイル給電回路から電力を供給され、Ｙ方向にＣＣＤ１０１及び載置ステージ１４を可動させ、コイル体２２ｂは、コイル給電回路から電力を供給され、Ｘ方向にＣＣＤ１０１及び載置ステージ１４を移動させる。 The coil bodies 22a and 22b are supplied with electric power from a coil power supply circuit (not shown), and move the CCD 101 and the mounting stage 14 in the X direction and the Y direction. In this embodiment, the coil body 22a is supplied with electric power from the coil power supply circuit, and the CCD 101 and the mounting stage 14 are moved in the Y direction. The coil body 22b is supplied with electric power from the coil power supply circuit, and the CCD 101 in the X direction. And the mounting stage 14 is moved.

コイル取付板部２１ａ、２１ｂには位置検出素子としてのホール素子（図示無し）が設けられている。 The coil mounting plate portions 21a and 21b are provided with Hall elements (not shown) as position detecting elements.

次に、保持機構のメカニカルな構成について図３および図４を用いて説明する。図４は、図３に示す保持機構を備えたＣＣＤステージ１０２のＡ−Ａ断面図である。図４（ａ）はＣＣＤ１０１及び載置ステージ１４が所定の位置に固定保持されている固定状態であり、図４（ｂ）はＣＣＤ１０１及び載置ステージ１４がＸ−Ｙ方向に移動可能であり、固定保持されていない開放状態である。図４（ｂ）では、ＣＣＤ１０１及び載置ステージ１４は所定の位置にある。保持機構は、押さえ板２６と、押さえピン２７と、ＣＣＤステージへの押さえ板２６の固定と、から大略構成される。 Next, the mechanical configuration of the holding mechanism will be described with reference to FIGS. FIG. 4 is a cross-sectional view of the CCD stage 102 having the holding mechanism shown in FIG. 4A shows a fixed state in which the CCD 101 and the mounting stage 14 are fixedly held at predetermined positions, and FIG. 4B shows that the CCD 101 and the mounting stage 14 can move in the XY direction. It is an open state that is not fixedly held. In FIG. 4B, the CCD 101 and the mounting stage 14 are at predetermined positions. The holding mechanism generally includes a pressing plate 26, a pressing pin 27, and fixing of the pressing plate 26 to the CCD stage.

図３および図４に示すように、押圧部材である押さえ板２６は、Ｙ方向ステージ１２の撮影光入射側の面上に固定され、Ｙ方向ステージ１２の外縁から受圧部１８に設けられた凹所１９ａに向かって長く延びる形状とされている。押さえ板２６は弾性材質からなる。Ｙ方向ステージ１２の撮影光入射側の面に固定されている端部が押さえ板２６の固定端部２６ａであり、他方の端部が押さえ板２６の自由端部２６ｂである。固定端部２６ａのみがＹ方向ステージ１２に固定されている。図４に示すように、押さえ板２６の自由端部２６ｂの近傍の撮影光入射側と反対側の面、すなわち、ＣＣＤステージ１０２と対向する面には半球面形状の押さえピン２７が設けられている。 As shown in FIGS. 3 and 4, the pressing plate 26, which is a pressing member, is fixed on the surface of the Y-direction stage 12 on the photographing light incident side, and is a recess provided in the pressure receiving unit 18 from the outer edge of the Y-direction stage 12. It is made into the shape extended long toward the place 19a. The holding plate 26 is made of an elastic material. An end portion fixed to the surface on the photographing light incident side of the Y direction stage 12 is a fixed end portion 26 a of the pressing plate 26, and the other end portion is a free end portion 26 b of the pressing plate 26. Only the fixed end portion 26 a is fixed to the Y direction stage 12. As shown in FIG. 4, a hemispherical pressing pin 27 is provided on the surface opposite to the photographing light incident side in the vicinity of the free end portion 26 b of the pressing plate 26, that is, the surface facing the CCD stage 102. Yes.

Ｙ方向ステージ１２には、保持機構駆動部として、撮影光軸Φ方向に伸縮する伸縮型アクチュエータが設けられている。本実施例では、伸縮型アクチュエータの一例として、圧電素子２８を用いている。図４に示すように、圧電素子２８は撮影光軸Φと平行な方向に伸縮するように配置されており、圧電素子２８の伸縮方向の一端は、Ｙ方向ステージ１２の撮影光入射側の面であって、かつ、押さえ板２６と対向する面に固定されている。伸縮方向の他端は、固定端部２６ａと自由端部２６ｂとの間において、押さえ板２６のＹ方向ステージ１２に対抗する面に固定されている。圧電素子２８は、Ｙ方向ステージ１２と押さえ板２６とに固定されていおり、Ｙ方向ステージ１２および押さえ板２６以外の部材と固定されていない。 The Y-direction stage 12 is provided with a telescopic actuator that expands and contracts in the direction of the photographic optical axis Φ as a holding mechanism driving unit. In the present embodiment, a piezoelectric element 28 is used as an example of a telescopic actuator. As shown in FIG. 4, the piezoelectric element 28 is arranged to expand and contract in a direction parallel to the photographing optical axis Φ, and one end of the piezoelectric element 28 in the expansion and contraction direction is a surface on the photographing light incident side of the Y direction stage 12. And it is fixed to the surface facing the pressing plate 26. The other end in the expansion / contraction direction is fixed to a surface of the pressing plate 26 that opposes the Y-direction stage 12 between the fixed end portion 26a and the free end portion 26b. The piezoelectric element 28 is fixed to the Y direction stage 12 and the pressing plate 26, and is not fixed to members other than the Y direction stage 12 and the pressing plate 26.

圧電素子２８は、固定端部２６ａと自由端部２６ｂとの間において押さえ板２６と固着されている。押さえ板２６は弾性を有するので、圧電素子２８が伸縮すると押さえ板２６の自由端部２６ｂは載置ステージ１４に対し近接離脱する。図４（ａ）に示すように、圧電素子２８が縮んでいる時は、押さえピン２７が凹所１９を押圧し、かつ、押さえピン２７が凹所１９と嵌合する。この時、ＣＣＤ１０１及び載置ステージ１４は所定の位置に固定保持され、Ｘ−Ｙ方向に.移動できない。この状態を保持機構の固定状態とする。また、図４（ｂ）に示すように、圧電素子２８が伸びている時は、押さえピン２７が凹所１９から離間する。この時、ＣＣＤ１０１及び載置ステージ１４は所定の位置に固定保持され、Ｘ−Ｙ方向に.移動できない。この状態を保持機構の固定状態とする。
本発明によれば、保持機構駆動部を駆動することにより、保持機構が撮像素子載置部材から離間し、撮像素子載置部材が移動可能になるので、像振れ補正が必要な際に直ちにかつ適切に像振れ補正を開始することができる。 The piezoelectric element 28 is fixed to the pressing plate 26 between the fixed end portion 26a and the free end portion 26b. Since the pressing plate 26 has elasticity, when the piezoelectric element 28 expands and contracts, the free end portion 26 b of the pressing plate 26 moves away from the mounting stage 14. As shown in FIG. 4A, when the piezoelectric element 28 is contracted, the pressing pin 27 presses the recess 19, and the pressing pin 27 engages with the recess 19. At this time, the CCD 101 and the mounting stage 14 are fixedly held at predetermined positions and cannot move in the XY directions. This state is a fixed state of the holding mechanism. Further, as shown in FIG. 4B, when the piezoelectric element 28 is extended, the pressing pin 27 is separated from the recess 19. At this time, the CCD 101 and the mounting stage 14 are fixedly held at predetermined positions and cannot move in the XY directions. This state is a fixed state of the holding mechanism.
According to the present invention, by driving the holding mechanism driving unit, the holding mechanism is separated from the image sensor mounting member, and the image sensor mounting member can be moved, so that when image blur correction is necessary, Image blur correction can be started appropriately.

このような構成により、固定部材１１は、撮像素子載置部材である載置ステージ１４、保持機構、保持機構駆動部である圧電素子２８に対し撮影光入射側と反対側に配置される。したがって、保持機構および保持機構駆動部を設ける為のスペースや保持機構が移動する為のスペースを、固定部材１１に対して撮影光入射側と反対側に設ける必要がない。固定部材１１に対して撮影光入射側と反対側に配置される部品が減り、カメラ全体の撮影光軸Φ方向の厚さを薄くすることができる。さらに、保持機構が載置ステージ１４を固定保持して所定の位置にＣＣＤ１０１を固定保持するので、ＣＣＤ１０１を所定の位置に維持する為にコイルに通電し続ける必要が無く、消費電力を低減できる。 With such a configuration, the fixing member 11 is disposed on the side opposite to the photographing light incident side with respect to the mounting stage 14 that is the imaging element mounting member, the holding mechanism, and the piezoelectric element 28 that is the holding mechanism driving unit. Therefore, it is not necessary to provide a space for providing the holding mechanism and the holding mechanism driving unit and a space for moving the holding mechanism on the side opposite to the photographing light incident side with respect to the fixing member 11. The number of parts arranged on the opposite side to the photographing light incident side with respect to the fixing member 11 is reduced, and the thickness of the entire camera in the photographing optical axis Φ direction can be reduced. Furthermore, since the holding mechanism fixes and holds the mounting stage 14 and the CCD 101 is fixedly held at a predetermined position, it is not necessary to continue energizing the coil in order to maintain the CCD 101 at the predetermined position, and power consumption can be reduced.

また、このような構成により、保持機構はＣＣＤステージ１０２に固定されているので、ＣＣＤステージ１０２と固定部材１１の間の固定位置の誤差は保持機構とＣＣＤステージ１０２との間の固定位置の調整時に影響を与えない。したがって、組み立て時における保持機構とＣＣＤステージ１０２の固定位置調整が容易である。 Further, since the holding mechanism is fixed to the CCD stage 102 by such a configuration, an error in the fixing position between the CCD stage 102 and the fixing member 11 is adjusted in the fixing position between the holding mechanism and the CCD stage 102. Does not affect sometimes. Therefore, it is easy to adjust the fixing position of the holding mechanism and the CCD stage 102 during assembly.

また、このような構成により、保持機構駆動部である圧電素子２８が、押さえ板２６を含む保持機構およびＹ方向ステージ１２以外の部材には固定されない。つまり、保持機構と保持機構駆動部が同一の部材に固定され、それ以外部材とは固定されていない。よって、組み立て時における圧電素子２８、及び、押さえ板２６、Ｙ方向ステージ１２の固定位置調整が容易である。 Further, with such a configuration, the piezoelectric element 28 that is the holding mechanism driving unit is not fixed to members other than the holding mechanism including the pressing plate 26 and the Y-direction stage 12. That is, the holding mechanism and the holding mechanism driving unit are fixed to the same member, and are not fixed to the other members. Therefore, it is easy to adjust the fixed positions of the piezoelectric element 28, the pressing plate 26, and the Y direction stage 12 during assembly.

次に、カメラ内部の像振れ補正部の制御方法について説明する。像振れ補正部の一例として、本実施例では、撮影者の手振れによる像ぶれを補正する像振れ補正部の制御方法について説明する。カメラ１の内部には、例えばジャイロセンサなどの手振れ検出センサ（図示無し）と、例えばＣＰＵなどの演算部（図示無し）が設けられている。手振れ検出センサがカメラ１の本体のＹ方向とＸ方向の傾きを検出し、この手振れ検出センサの出力に基づいて演算部がＣＣＤ１０１の目標位置を決定する。コイル給電回路からコイル体２２ａ、２２ｂへの通電電流を変化させることにより、撮影者の手振れによる被写体像の移動にＣＣＤ１０１を追従移動させる制御を演算部が行う。ＣＣＤ１０１の位置検出はホール素子により行われ、目標位置にＣＣＤ１０１が移動させられる。 Next, a method for controlling the image blur correction unit inside the camera will be described. In this embodiment, as an example of the image blur correction unit, a control method of the image blur correction unit that corrects the image blur due to the camera shake of the photographer will be described. Inside the camera 1, a camera shake detection sensor (not shown) such as a gyro sensor and a calculation unit (not shown) such as a CPU are provided. The camera shake detection sensor detects the tilt of the main body of the camera 1 in the Y direction and the X direction, and the calculation unit determines the target position of the CCD 101 based on the output of the camera shake detection sensor. The arithmetic unit controls the CCD 101 to move following the movement of the subject image due to the camera shake of the photographer by changing the energization current from the coil power supply circuit to the coil bodies 22a and 22b. The position detection of the CCD 101 is performed by a Hall element, and the CCD 101 is moved to the target position.

次に、保持機構の動作について説明する。まず、図４（ａ）のように保持機構がＣＣＤ１０１及び載置ステージ１４を所定の位置に固定保持する固定状態において、圧電素子２８にアクチュエータ駆動回路（不図示）より電圧を印加すると、圧電素子２８が押さえ板２６を撮影光軸方向の被写体向きに付勢し、押さえ板２６の自由端部２６ｂは受圧部１８に対して撮影光入射側に向かって移動させられる。押さえ板２６の自由端部２６ｂが受圧部１８から十分に離間した状態が、図４（ｂ）に示す保持機構の開放状態であり、ＣＣＤ１０１及び載置ステージ１４はＸ−Ｙ方向に移動可能である。この開放状態において、ＣＣＤ１０１に対して被写体像の移動に追従移動させる制御が行われる。 Next, the operation of the holding mechanism will be described. First, when a voltage is applied to the piezoelectric element 28 from an actuator drive circuit (not shown) in a fixed state in which the holding mechanism fixes and holds the CCD 101 and the mounting stage 14 at predetermined positions as shown in FIG. 28 urges the holding plate 26 toward the subject in the photographing optical axis direction, and the free end portion 26b of the holding plate 26 is moved toward the photographing light incident side with respect to the pressure receiving portion 18. A state where the free end portion 26b of the holding plate 26 is sufficiently separated from the pressure receiving portion 18 is an open state of the holding mechanism shown in FIG. 4B, and the CCD 101 and the mounting stage 14 are movable in the XY directions. is there. In this open state, the CCD 101 is controlled to move following the movement of the subject image.

そして、圧電素子２８への電圧の印加を停止すると、圧電素子２８の撮影光軸方向の被写体向きの付勢力が無くなり、押さえ板２６自体が持つ弾性力により自由端部２６ｂは受圧部１８に向かって移動させられる。押さえ板２６の押さえピン２７は受圧部１８に当接し、凹所１９を押圧する。つまり、押圧部である押さえピン２７が凹所１９を押圧することにより、保持機構がＣＣＤ１０１及び載置ステージ１４を所定の位置に固定保持する固定状態となる（図４（ａ））。 When the application of voltage to the piezoelectric element 28 is stopped, the biasing force of the piezoelectric element 28 toward the subject in the photographic optical axis direction disappears, and the free end portion 26b faces the pressure receiving portion 18 by the elastic force of the holding plate 26 itself. Moved. The pressing pin 27 of the pressing plate 26 contacts the pressure receiving portion 18 and presses the recess 19. That is, when the pressing pin 27 that is a pressing portion presses the recess 19, the holding mechanism is in a fixed state in which the CCD 101 and the mounting stage 14 are fixed and held at predetermined positions (FIG. 4A).

図４（ａ）に示すように、押さえピン（嵌合突起）２７が凹所（嵌合穴）１９と嵌合することにより、ＣＣＤ１０１及び載置ステージ１４は連結され、所定の位置に固定保持される。押さえピン２７が凹所１９を押圧し、かつ、押さえピン２７が凹所１９と嵌合することで、保持機構が載置テージ１４を固定保持する力がより増加する。 As shown in FIG. 4A, when the pressing pin (fitting protrusion) 27 is fitted into the recess (fitting hole) 19, the CCD 101 and the mounting stage 14 are connected and fixedly held at a predetermined position. Is done. When the pressing pin 27 presses the recess 19 and the pressing pin 27 fits into the recess 19, the force with which the holding mechanism fixes and holds the placement cottage 14 is further increased.

次に、レンズ１２ｂと保持機構の動作について、図５を用いて説明する。例えばカメラの電源が入っていない電源オフ状態などにおいては、レンズ１２ｂはＣＣＤステージ１０２に最も接近して配置されており、保持機構は固定状態である。この時、レンズ１２ｂの撮影光軸方向の位置は最接近ポジションであり、最接近ポジションにあるレンズ１２ｂの中でＣＣＤステージ１０２に最も接近している箇所の撮影光軸方向の位置は最接近位置である（図５（ａ））。光学素子であるレンズ１２ｂが最接近ポジションにある時は常に、保持機構がＣＣＤ１０１及び載置ステージ１４を所定の位置に固定保持する固定状態とすることにより、レンズ１２ｂと保持機構の干渉を避ける為に最接近ポジションを保持機構から撮影光入射側に十分に離間させる必要がなくなり、カメラ全体の撮影光軸方向の厚さをより薄くすることができる。 Next, the operation of the lens 12b and the holding mechanism will be described with reference to FIG. For example, in a power-off state where the camera is not turned on, the lens 12b is disposed closest to the CCD stage 102, and the holding mechanism is fixed. At this time, the position of the lens 12b in the photographing optical axis direction is the closest position, and the position in the photographing optical axis direction of the lens 12b in the closest position that is closest to the CCD stage 102 is the closest position. (FIG. 5A). In order to avoid interference between the lens 12b and the holding mechanism by setting the holding mechanism to fix the CCD 101 and the mounting stage 14 at predetermined positions whenever the lens 12b which is an optical element is at the closest position. In addition, it is not necessary to sufficiently separate the closest position from the holding mechanism to the photographing light incident side, and the thickness of the entire camera in the photographing optical axis direction can be further reduced.

例えばカメラの電源を入れる操作などによって、図示しないレンズ駆動部に駆動を開始する為の信号が与えられると、レンズ１２ｂは撮影光軸Φに沿って被写体向き（撮影光入射側）に、近接位置から所定の撮影開始ポジションまで移動する（図５（ｂ））。 For example, when a signal for starting driving is given to a lens driving unit (not shown) by an operation of turning on the power of the camera, the lens 12b is directed toward the subject (shooting light incident side) along the shooting optical axis Φ. To a predetermined shooting start position (FIG. 5B).

その後、撮影者のレリーズスイッチ（レリーズシャッター）ＳＷ１に対する撮影操作が可能となる。撮影操作前は像振れ補正部による像振れ補正は行われず、保持機構は固定状態であり、ＣＣＤ１０１は所定の位置に維持されている。像振れ補正部による像振れ補正が行われていないので、コイル給電回路からコイル体２２ａ、２２ｂへ通電されず、保持機構が固定状態にあるので、圧電素子２８に電圧は印加されていない。したがって、ＣＣＤ１０１を所定の位置に維持する為に、保持機構駆動部である圧電素子２８、および、コイル体２２ａ、２２ｂへ通電し続ける必要が無く、消費電力が低減される。 Thereafter, the photographing operation for the release switch (release shutter) SW1 of the photographer becomes possible. Before the photographing operation, image blur correction by the image blur correction unit is not performed, the holding mechanism is in a fixed state, and the CCD 101 is maintained at a predetermined position. Since image blur correction by the image blur correction unit is not performed, no current is supplied from the coil power supply circuit to the coil bodies 22a and 22b, and the holding mechanism is in a fixed state, so that no voltage is applied to the piezoelectric element 28. Therefore, in order to maintain the CCD 101 at a predetermined position, it is not necessary to continue energizing the piezoelectric element 28 as the holding mechanism driving unit and the coil bodies 22a and 22b, and the power consumption is reduced.

撮影者のレリーズスイッチ（レリーズシャッター）ＳＷ１に対する撮影操作後に、像振れ補正部により像振れ補正が開始される。像振れ補正が開始されると、図示しないアクチュエータ駆動回路より圧電素子２８に電圧が印加され、圧電素子２８が撮影光軸方向の被写体向きの付勢力を押さえ板２６に加える。この付勢力により押さえ板２６の自由端部２６ｂが撮影光軸方向の被写体向き（撮影光入射側）に移動し、押さえ板２６の押さえピン２７が凹所１９から離間する。つまり、保持機構駆動部である圧電素子２８を駆動することにより、保持機構の押圧部である押さえピン２７（嵌合突起）が凹所１９（嵌合穴）から離間し、ＣＣＤ１０１及び載置ステージ１４が移動可能になる。したがって、像振れ補正が必要な際に直ちにかつ適切に像振れ補正を開始することができる。 After the photographing operation for the release switch (release shutter) SW1 of the photographer, image blur correction is started by the image blur correction unit. When image blur correction is started, a voltage is applied to the piezoelectric element 28 from an actuator drive circuit (not shown), and the piezoelectric element 28 applies an urging force toward the subject in the photographing optical axis direction to the holding plate 26. With this urging force, the free end 26 b of the pressing plate 26 moves toward the subject in the photographing optical axis direction (photographing light incident side), and the pressing pin 27 of the pressing plate 26 is separated from the recess 19. That is, by driving the piezoelectric element 28 that is the holding mechanism driving unit, the pressing pin 27 (fitting protrusion) that is the pressing unit of the holding mechanism is separated from the recess 19 (fitting hole), and the CCD 101 and the mounting stage. 14 becomes movable. Accordingly, the image blur correction can be started immediately and appropriately when the image blur correction is necessary.

押さえ板２６の自由端部２６ｂの先端が受圧部１８から最も離間した時の自由端部２６ｂの先端の位置が最離間位置である。撮影開始ポジションは最離間位置よりも撮影光入射側に位置する。撮影者の撮影操作中は、レンズ１２ｂは、最離間位置よりも撮影光入射側に配置され、撮影開始ポジションを含む撮影領域（図示無し）において、レンズ駆動部により撮影光軸方向に移動させられる。 The position of the distal end of the free end portion 26b when the distal end of the free end portion 26b of the pressing plate 26 is farthest from the pressure receiving portion 18 is the most spaced position. The photographing start position is located closer to the photographing light incident side than the farthest position. During the photographing operation of the photographer, the lens 12b is arranged on the photographing light incident side from the most distant position, and is moved in the photographing optical axis direction by the lens driving unit in a photographing region (not shown) including the photographing start position. .

保持機構が開放状態になると、コイル給電回路からコイル体２２ａ、２２ｂに電力が供給され、撮影者の手振れによる被写体の像の移動に被写体画像が結像される撮像素子を追従させるようにＣＣＤ１０１及び載置ステージ１４がＸ−Ｙ方向に駆動される。 When the holding mechanism is in an open state, power is supplied from the coil feeding circuit to the coil bodies 22a and 22b, and the CCD 101 and the CCD 101 and the imaging element on which the subject image is formed follow the movement of the subject image due to the camera shake of the photographer. The mounting stage 14 is driven in the XY direction.

例えば撮影者の電源を切る操作などによって、図示しないレンズ駆動部に駆動を終了する為の信号が与えられると、アクチュエータ駆動回路からの圧電素子２８への電圧の印加が停止され、圧電素子２８により押さえ板２６に加えられていた撮影光軸方向の被写体向きの付勢力が無くなる。固定端部２６ａがＹ方向ステージ１２に固定されているので、圧電素子２８によって押さえ板２６に加えられていた撮影光軸方向の被写体向きの付勢力が無くなると、自由端部２６ｂが撮影光軸方向の被写体向きと反対の向きに移動する。そして、再び押さえピン２７が凹所（嵌合穴）を押圧し、押さえピン（嵌合突起）２７は凹所（嵌合穴）１９へ嵌合する。つまり、保持機構が開放状態から固定状態へ切り替わる。その後、レンズ１２ｂは撮影光軸Φに沿ってＣＣＤステージ１０２に接近する向きに、撮影開始ポジションから最接近ポジションまで移動する（図５（ａ））。 For example, when a signal for ending the driving is given to a lens driving unit (not shown) by an operation of turning off the power of the photographer, the application of voltage from the actuator driving circuit to the piezoelectric element 28 is stopped. The biasing force applied to the subject in the direction of the photographing optical axis applied to the holding plate 26 is eliminated. Since the fixed end portion 26a is fixed to the Y-direction stage 12, when the urging force directed to the subject in the photographing optical axis direction applied to the holding plate 26 by the piezoelectric element 28 is eliminated, the free end portion 26b is moved to the photographing optical axis. Move in the direction opposite to the direction of the subject. Then, the pressing pin 27 presses the recess (fitting hole) again, and the pressing pin (fitting protrusion) 27 is fitted into the recess (fitting hole) 19. That is, the holding mechanism is switched from the open state to the fixed state. Thereafter, the lens 12b moves from the photographing start position to the closest approach position in the direction of approaching the CCD stage 102 along the photographing optical axis Φ (FIG. 5A).

本実施例においては、光学素子であるレンズ１２ｂが最接近ポジションにある時は常に、保持機構がＣＣＤ１０１及び載置ステージ１４を所定の位置に固定保持する固定状態となる。したがって、保持機構が動作する空間を確保する為に光学素子の最接近位置を撮像素子から十分に離間させる必要が無くなる。よって、撮像装置全体の厚さをさらに薄くすることができる。 In this embodiment, whenever the lens 12b, which is an optical element, is in the closest position, the holding mechanism is in a fixed state in which the CCD 101 and the mounting stage 14 are fixed and held at predetermined positions. Therefore, it is not necessary to sufficiently separate the closest approach position of the optical element from the imaging element in order to secure a space in which the holding mechanism operates. Therefore, the thickness of the entire imaging device can be further reduced.

また、図５（ａ）および図５（ｂ）に示すように、押さえ板２６の自由端部２６ｂの最離間位置は、光学素子であるレンズ１２ｂの最接近位置よりも撮影光入射側の位置にある。つまり、レンズ１２ｂが最接近位置にない時に、押さえ板２６がレンズ１２ｂの最接近位置よりも撮影光入射側の領域に進入可能である。したがって、レンズ１２ｂが被写体方向へ離間した後にできるスペース内に押さえ板２６が進入することができ、カメラ全体の撮影光軸方向の厚さをより薄くすることができる。 Further, as shown in FIGS. 5A and 5B, the most distant position of the free end portion 26b of the pressing plate 26 is a position closer to the photographing light incident side than the closest approach position of the lens 12b that is an optical element. It is in. That is, when the lens 12b is not at the closest position, the pressing plate 26 can enter the area on the photographing light incident side with respect to the closest position of the lens 12b. Therefore, the pressing plate 26 can enter the space formed after the lens 12b is separated in the direction of the subject, and the thickness of the entire camera in the photographing optical axis direction can be further reduced.

本発明の別の実施例について、図６を用いて説明する。図２ないし図４では押さえピン（嵌合突起）２７は半球面形状であり、凹所（嵌合穴）１９は円柱形状であるが、図６に拡大して示すように、押さえピン（嵌合突起）３３はテーパ形状の突起であっても良く、凹所（嵌合穴）１９はテーパ形状の凹所であっても良い。この場合、図６（ａ）に拡大して示すように、押さえピン３３の周壁３３ａと受圧部１８の凹所周壁１９ａとが密接に嵌合した状態が保持機構の固定状態に相当する。図６（ｂ）に拡大して示すように、押さえピン３３の周壁３３ａと受圧部１８の凹所周壁１９ｂとが離間した状態が保持機構の開放状態に対応する。テーパ形状の突起を押さえピン（嵌合突起）３３とし、テーパ形状の凹所を凹所（嵌合穴）１９とするにより、押さえピン（嵌合突起）３３の中心の位置と凹所（嵌合穴）１９の中心の位置が一致していない場合でも、押さえピン（嵌合突起）３３が凹所（嵌合穴）１９に進入するにつれて、押さえピン（嵌合突起）３３の中心の位置と凹所（嵌合穴）１９の中心の位置が近づく。したがって、保持機構が載置テージ１４を、より高い精度で所定の位置に固定保持することができる。 Another embodiment of the present invention will be described with reference to FIG. 2 to 4, the pressing pin (fitting protrusion) 27 has a hemispherical shape and the recess (fitting hole) 19 has a cylindrical shape. However, as shown in an enlarged view in FIG. The joint protrusion 33 may be a taper-shaped protrusion, and the recess (fitting hole) 19 may be a taper-shaped recess. In this case, as shown in an enlarged view in FIG. 6A, the state in which the peripheral wall 33a of the pressing pin 33 and the recess peripheral wall 19a of the pressure receiving portion 18 are closely fitted corresponds to the fixed state of the holding mechanism. As shown in an enlarged view in FIG. 6B, the state in which the peripheral wall 33a of the pressing pin 33 and the recess peripheral wall 19b of the pressure receiving portion 18 are separated corresponds to the open state of the holding mechanism. The taper-shaped protrusion is used as a holding pin (fitting protrusion) 33, and the tapered recess is used as a recess (fitting hole) 19. Even when the position of the center of the fitting hole 19 does not match, the position of the center of the holding pin (fitting protrusion) 33 as the pressing pin (fitting protrusion) 33 enters the recess (fitting hole) 19. The position of the center of the recess (fitting hole) 19 approaches. Therefore, the holding mechanism can fix and hold the mounting cottage 14 at a predetermined position with higher accuracy.

なお、上述した実施例では保持機構の押さえ板２６に押さえピン（嵌合突起）を設け、載置ステージ１４の受圧部１８に凹所（嵌合穴）を設けたが、保持機構の押さえ板２６に凹所（嵌合穴）を設け、載置ステージ１４の受圧部１８に押さえピン（嵌合突起）を設けても良い。また、上述した実施例では嵌合突起および嵌合穴を設けたが、嵌合突起および嵌合穴を設けなくても良い。 In the above-described embodiment, a holding pin (fitting protrusion) is provided on the holding plate 26 of the holding mechanism and a recess (fitting hole) is provided on the pressure receiving portion 18 of the mounting stage 14. 26 may be provided with a recess (fitting hole), and a pressure pin (fitting protrusion) may be provided on the pressure receiving portion 18 of the mounting stage 14. Moreover, although the fitting protrusion and the fitting hole are provided in the embodiment described above, the fitting protrusion and the fitting hole may not be provided.

なお、上述した実施例では撮影光軸方向に伸縮するように圧電素子２８を配置したが、撮影光軸Φに垂直な方向に伸縮するように圧電素子を配置しても良い。伸縮型アクチュエータは圧電素子に限られるものではない。 In the above-described embodiment, the piezoelectric element 28 is arranged so as to expand and contract in the photographing optical axis direction. However, the piezoelectric element may be arranged so as to expand and contract in a direction perpendicular to the photographing optical axis Φ. The telescopic actuator is not limited to a piezoelectric element.

本発明に係る撮像装置の一例を示す正面図である。It is a front view which shows an example of the imaging device which concerns on this invention. 本発明に係る撮像装置における固定筒の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the fixed cylinder in the imaging device which concerns on this invention. 本発明に係る撮像装置における保持機構の一例を示す図である。（ａ）はＣＣＤステージおよび保持機構の斜視図であり、（ｂ）はＣＣＤステージ１０２および保持機構の上面図である。It is a figure which shows an example of the holding mechanism in the imaging device which concerns on this invention. (A) is a perspective view of the CCD stage and the holding mechanism, and (b) is a top view of the CCD stage 102 and the holding mechanism. 本発明に係る撮像装置における保持機構を備えたＣＣＤステージのＡ−Ａ断面図である。図４（ａ）はＣＣＤ及び載置ステージが所定の位置に固定保持されている固定状態であり、図４（ｂ）はＣＣＤ及び載置ステージがＸ−Ｙ方向に移動可能であり、固定保持されていない開放状態である。It is AA sectional drawing of the CCD stage provided with the holding mechanism in the imaging device which concerns on this invention. FIG. 4A shows a fixed state in which the CCD and the mounting stage are fixedly held at predetermined positions, and FIG. 4B shows that the CCD and the mounting stage are movable in the XY directions, and are fixed and held. It is not open. 本発明に係る撮像装置におけるレンズの撮影光軸方向のポジションを示す図である。（ａ）は、レンズの撮影光軸方向の位置の最接近ポジションを示す図であり、（ｂ）は、レンズの撮影光軸方向の位置の最離間ポジションを示す図である。It is a figure which shows the position of the imaging | photography optical axis direction of the lens in the imaging device which concerns on this invention. (A) is a figure which shows the closest position of the position of the imaging | photography optical axis direction of a lens, (b) is a figure which shows the furthest distance position of the position of the imaging | photography optical axis direction of a lens. 本発明に係る撮像装置における押さえピン（嵌合突起）の位置を示す図である。It is a figure which shows the position of the pressing pin (fitting protrusion) in the imaging device which concerns on this invention.

Explanation of symbols

ＳＷ１レリーズスイッチ（レリーズシャッター）
ＳＷ２モードダイアル
１カメラ
２メモリカード／電池装填室の蓋
３ストロボ発光部
４光学ファインダ
５測距ユニット
６リモートコントロール受光部
７鏡胴ユニット
１０固定筒
１１固定部材
１２レンズ
１０１ＣＣＤ
１０２ＣＣＤステージ SW1 Release switch (Release shutter)
SW2 mode dial 1 camera 2 memory card / battery compartment cover 3 strobe light emitting unit 4 optical viewfinder 5 distance measuring unit 6 remote control light receiving unit 7 lens barrel unit 10 fixed cylinder 11 fixed member 12 lens 101 CCD
102 CCD stage

Claims

An image sensor on which a subject image is formed by an imaging optical system having an optical axis;
An image sensor moving unit that movably supports the image sensor in a plane perpendicular to the optical axis;
A holding mechanism for fixing and holding the image sensor at a predetermined position;
A fixing unit for fixing the imaging element moving unit to the imaging device;
With
The fixing portion is provided on the side opposite to the photographing light incident side with respect to the imaging element and the holding mechanism,
The image pickup apparatus, wherein the holding mechanism is fixed to the image pickup element moving unit.

A holding mechanism driving unit for driving the holding mechanism;
The imaging apparatus according to claim 1, wherein the holding mechanism driving unit is fixed to the imaging element moving unit and the holding mechanism.

The imaging apparatus according to claim 1, wherein the holding mechanism is disposed on a photographing light incident side with respect to the fixing member.

4. The driving device according to claim 1, wherein the holding mechanism is separated from the imaging element mounting member and the imaging element moving unit is movable by driving the holding mechanism driving unit. The imaging device described in 1.

The holding mechanism includes a first connecting portion;
The imaging element mounting member includes a second connecting portion;
By connecting the first connecting part and the second connecting part,
The imaging apparatus according to claim 1, wherein the holding mechanism holds the imaging element fixedly.

By separating the first connecting portion and the second connecting portion,
The imaging apparatus according to claim 5, wherein the holding mechanism makes the imaging device movable.

The first connecting portion is a pressing portion;
The second connecting portion is a pressure receiving portion;
When the first connecting portion presses the second connecting portion,
The imaging apparatus according to claim 5, wherein the holding mechanism holds the imaging element fixedly.

When the first connecting portion is separated from the second connecting portion,
The imaging apparatus according to claim 7, wherein the holding mechanism makes the imaging device movable.

The first connecting portion is either a fitting hole or a fitting protrusion;
The other one of the fitting hole or the fitting projection is the second connecting portion,
The imaging apparatus according to claim 7 or 8, wherein the holding mechanism fixes and holds the imaging element by fitting the first connecting portion and the second connecting portion.

By separating the first connecting portion and the second connecting portion,
The image pickup apparatus according to claim 9, wherein the holding mechanism makes the image pickup device movable.

An image sensor on which a subject image is formed by an imaging optical system having an optical axis;
An image sensor moving unit that movably supports the image sensor in a plane perpendicular to the optical axis;
A holding mechanism for fixing and holding the image sensor at a predetermined position;
A fixing unit for fixing the imaging element moving unit to the imaging device;
With
The image pickup apparatus, wherein the fixing unit is provided on a side opposite to a photographing light incident side with respect to the image pickup element and the holding mechanism.

An image sensor on which a subject image is formed by an imaging optical system having an optical axis;
An image sensor moving unit that movably supports the image sensor in a plane perpendicular to the optical axis;
A holding mechanism for fixing and holding the image sensor at a predetermined position;
A fixing unit for fixing the imaging element moving unit to the imaging device;
A holding mechanism driving unit for driving the holding mechanism;
With
The image pickup apparatus, wherein the holding mechanism driving unit is fixed to the image sensor moving unit.

The imaging optical system is configured, and includes an optical element supported so as to be able to approach and separate from the imaging element moving unit in a predetermined optical element movable region
When the optical element is in the closest approach position in the optical axis direction closest to the image sensor moving portion in the predetermined optical element movable region, the holding mechanism fixes and holds the image sensor mounting member. The image pickup apparatus according to claim 1, wherein the image pickup element is fixedly held at a predetermined position.

The imaging apparatus according to claim 13, wherein when the optical element is not at the closest position, the holding mechanism enters a region closer to the photographing light incident side than the closest position.