JP2016048295A - Inflection optical type zoom device with camera shake correction function - Google Patents
Inflection optical type zoom device with camera shake correction function Download PDFInfo
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Abstract
Description
本発明は、例えば、携帯電話等のカメラに用いられる手振れ補正機能を備えた屈曲光学式ズーム装置に関する。 The present invention relates to a bending optical zoom device having a camera shake correction function used for a camera such as a mobile phone.
携帯電話等のカメラに搭載される手振れ補正機能を備えた屈曲光学式ズーム装置(以下、手振れ補正機能付屈曲光学式ズーム装置という)は、被写体側に配設された対物レンズと、反射部材と、ズームレンズ群とを備える。手振れ補正機能付屈曲光学式ズーム装置は、被写体側から入射した光線をミラーやプリズム等からなる反射部材により90度折り曲げて、反射部材の後方(光線の進行方向)に設けられたズームレンズ群、及びイメージセンサーへと導きつつ像のブレを抑制する。より具体的には、カメラの撮影時に手振れが生じた場合、手振れの方向及び手振れの速さに応じて反射部材を回動させ、イメージセンサー上に結像される像のブレを抑制するものである。 A bending optical zoom device equipped with a camera shake correction function (hereinafter referred to as a bending optical zoom device with a camera shake correction function) mounted on a camera such as a mobile phone is provided with an objective lens disposed on the subject side, a reflecting member, And a zoom lens group. A bending optical zoom device with a camera shake correction function is a zoom lens group provided behind a reflecting member (advancing direction of the light beam) by bending a light beam incident from the subject side by 90 degrees with a reflecting member such as a mirror or a prism, In addition, image blurring is suppressed while leading to an image sensor. More specifically, when camera shake occurs during shooting with the camera, the reflecting member is rotated according to the direction of camera shake and the speed of camera shake to suppress blurring of the image formed on the image sensor. is there.
例えば、特許文献1には、図6(a)に示すような構成の手振れ補正機能付屈曲光学式ズーム装置500が提案されている。手振れ補正機能付屈曲光学式ズーム装置500は、対物レンズ501と、反射部材502と、ズームレンズ群503と、イメージセンサー504とがケース505に収納された構成である。ここで、対物レンズ501の光軸O5をZ軸方向とし、被写体側をZ軸前方(+Z側または+Z方向)とする。また、Z軸に直交し、互いに直交する軸をそれぞれX軸及びY軸とし、ズームレンズ群503の光軸P5をY軸方向とする。 For example, Patent Document 1 proposes a bending optical zoom device 500 with a camera shake correction function configured as shown in FIG. The bending optical zoom device 500 with a camera shake correction function has a configuration in which an objective lens 501, a reflecting member 502, a zoom lens group 503, and an image sensor 504 are housed in a case 505. Here, the optical axis O5 of the objective lens 501 is the Z-axis direction, and the subject side is the front of the Z-axis (+ Z side or + Z direction). The axes orthogonal to the Z axis and orthogonal to each other are defined as an X axis and a Y axis, respectively, and the optical axis P5 of the zoom lens group 503 is defined as a Y axis direction.
被写体からの光線は、対物レンズ501を通過して、ミラーよりなる反射部材502の反射面502Rに到達する。反射面502Rに到達した光線は、反射面502Rからズームレンズ群503に向けて反射し、ズームレンズ群503を通過してイメージセンサー504上で結像する。ズームレンズ群503は、Y軸方向へ移動可能とされた複数のレンズが組み合わされたもので、被写体の像を変倍するとともにイメージセンサー504上で合焦させる。 The light beam from the subject passes through the objective lens 501 and reaches the reflecting surface 502R of the reflecting member 502 made of a mirror. The light beam that has reached the reflecting surface 502R is reflected from the reflecting surface 502R toward the zoom lens group 503, passes through the zoom lens group 503, and forms an image on the image sensor 504. The zoom lens group 503 is a combination of a plurality of lenses that are movable in the Y-axis direction. The zoom lens group 503 scales an object image and focuses it on the image sensor 504.
図6(b)〜(d)に示すように、反射部材502は、背面502Hに当接するように接続された突起部506により、直線S及び直線Tの周りに回動可能に支持されている。反射部材502の背面502Hには、圧電式アクチュエータ507S及び圧電式アクチュエータ507Tが取付けられている。 As shown in FIGS. 6B to 6D, the reflecting member 502 is supported so as to be rotatable around the straight line S and the straight line T by a protrusion 506 connected so as to contact the back surface 502H. . A piezoelectric actuator 507S and a piezoelectric actuator 507T are attached to the back surface 502H of the reflecting member 502.
ここで、突起部506と圧電式アクチュエータ507Tとを結ぶ背面502H上の線を直線Sとし、突起部506と圧電式アクチュエータ507Sとを結ぶ背面502H上の線を直線Tとした場合、直線Sと直線Tとは互いに直交することとなる。 Here, when the line on the back surface 502H connecting the protrusion 506 and the piezoelectric actuator 507T is a straight line S, and the line on the back surface 502H connecting the protrusion 506 and the piezoelectric actuator 507S is a straight line T, the straight line S The straight lines T are orthogonal to each other.
圧電式アクチュエータ507Sが伸縮すると、反射部材502は直線Sの周りを回動し、圧電式アクチュエータ507Tが伸縮すると、反射部材502は直線Tの周りを回動する。そして、手振れが発生した時には、手振れの方向及び手振れの速さに対応して圧電式アクチュエータ507S及び圧電式アクチュエータ507Tの両方またはいずれか一方が伸縮する。これにより、反射部材502は、突起部506との当接部を支点として回動することによって反射した光線の光軸の方向が変化し、イメージセンサー504上における像のブレが抑制される。 When the piezoelectric actuator 507S expands and contracts, the reflecting member 502 rotates around the straight line S, and when the piezoelectric actuator 507T expands and contracts, the reflecting member 502 rotates around the straight line T. When camera shake occurs, either or both of the piezoelectric actuator 507S and the piezoelectric actuator 507T expand and contract in accordance with the direction of camera shake and the speed of camera shake. As a result, the reflecting member 502 rotates about the contact portion with the protruding portion 506 as a fulcrum, so that the direction of the optical axis of the reflected light changes, and image blurring on the image sensor 504 is suppressed.
しかしながら、反射部材502は、背面502Hと突起部506との当接部を支点として回動するため、回動動作の中心が反射部材502の厚さtだけ反射面502Rよりも後退した位置にあり、反射面502R上に回動の中心が存在しない。そのため、反射面502Rによって反射した反射光の光軸は、反射部材502の回動に伴って入射光軸の反射点R5が移動するので、ズームレンズ群503の光軸P5からずれる。その結果、手振れ補正機能付屈曲光学式ズーム装置500は、手振れ補正の動作に伴ってイメージセンサー504上に結像される画像が歪み、写真の品質が大きく損なわれてしまうという問題があった。 However, since the reflecting member 502 rotates with the contact portion between the back surface 502H and the protrusion 506 as a fulcrum, the center of the rotating operation is at a position retracted from the reflecting surface 502R by the thickness t of the reflecting member 502. The center of rotation does not exist on the reflecting surface 502R. Therefore, the optical axis of the reflected light reflected by the reflecting surface 502R is deviated from the optical axis P5 of the zoom lens group 503 because the reflection point R5 of the incident optical axis moves as the reflecting member 502 rotates. As a result, the bending optical zoom device 500 with a camera shake correction function has a problem that an image formed on the image sensor 504 is distorted with a camera shake correction operation, and the quality of the photograph is greatly impaired.
本発明は、反射部材の回動に伴い、反射面により反射した反射光線の光軸がズームレンズ群の光軸からずれることがなく、撮影画像の品質が劣化することのない手振れ補正機能付屈曲光学式ズーム装置を提供することを目的とする。 In the present invention, the optical axis of the reflected light beam reflected by the reflecting surface does not deviate from the optical axis of the zoom lens group with the rotation of the reflecting member, so that the quality of the captured image is not deteriorated. An object is to provide an optical zoom device.
本願発明は、入射光軸を屈曲させる反射部材と、複数のレンズを有するズームレンズ群とを備えた手振れ補正機能付屈曲光学式ズーム装置であって、反射部材は切断球状をなす回動部材に取付けられ、反射面が回動部材の球弧面の中心上に形成され、球弧面の中心はズームレンズ群の光軸上に設けられ、回動部材が球弧面に沿って回動可能に挟持される構成とした。
本発明による手振れ補正機能付屈曲光学式ズーム装置は、手振れが生じて反射部材が回動したときに、反射面における反射光の光軸が移動しなくなる。このため、イメージセンサー上に結像する画像が歪まないので、撮影品質を劣化させることがない。
The present invention is a bending optical zoom device with a camera shake correction function including a reflecting member that bends an incident optical axis and a zoom lens group having a plurality of lenses, and the reflecting member is a rotating member that forms a cut spherical shape. Mounted, the reflecting surface is formed on the center of the spherical arc surface of the rotating member, the center of the spherical arc surface is provided on the optical axis of the zoom lens group, and the rotating member can rotate along the spherical arc surface It was set as the structure pinched by.
In the bending optical zoom device with a camera shake correction function according to the present invention, the optical axis of the reflected light on the reflecting surface does not move when the reflecting member rotates due to camera shake. For this reason, since the image formed on the image sensor is not distorted, the photographing quality is not deteriorated.
また、本願発明は手振れ補正機能付屈曲光学式ズーム装置は、回動部材を挟持する振動手段を備え、振動手段の駆動端が回動部材の球弧面と当接し、回動部材は振動手段の駆動端が振動することにより球弧面に沿って回動する構成とした。
これにより、球弧面の中心を支点とする回動部材は、反射面における反射光の光軸を移動させることなく回動させることができる。
Further, the present invention is a bending optical zoom device with a camera shake correction function, comprising vibration means for holding the rotating member, the drive end of the vibrating means abuts on the spherical surface of the rotating member, and the rotating member is the vibrating means. It was set as the structure which rotates along a spherical arc surface, when the drive end of No. vibrates.
Thereby, the rotation member which uses the center of a spherical arc surface as a fulcrum can be rotated, without moving the optical axis of the reflected light in a reflective surface.
また、本願発明は、振動手段が圧電振動部材である構成とした。
これにより、回動部材は、球弧面の中心を支点として、手振れに応じて正確に回動することができる。
In the present invention, the vibration means is a piezoelectric vibration member.
As a result, the rotating member can be accurately rotated according to camera shake with the center of the spherical arc surface as a fulcrum.
また、本願発明は、振動手段が磁歪振動部材である構成とした。
これにより、回動部材を球弧面の中心を支点として、手振れに応じて正確に回動させることができる。
In the present invention, the vibration means is a magnetostrictive vibration member.
As a result, the rotating member can be accurately rotated according to camera shake with the center of the spherical arc surface as a fulcrum.
また、本願発明は、回動部材の球弧面の径方向に空隙を隔てて対向し、当該球弧面に取り付けられる第1の磁性吸引部材と、回動部材の球弧面の径方向に空隙を隔てて対向し、回動部材の固定側に取り付けられる第2の磁性吸引部材とを備え、第1の磁性吸引部材及び第2の磁性吸引部材のうち、少なくとも一方が永久磁石である構成とした。
これにより、反射部材には、回動により当該回動前の方向を向く復元力を付与することができるようになる。
The present invention also includes a first magnetic attraction member that is opposed to the radial direction of the ball arc surface of the rotating member with a gap and is attached to the ball arc surface, and a radial direction of the ball arc surface of the rotating member. A second magnetic attraction member facing the air gap and attached to the fixed side of the rotating member, wherein at least one of the first magnetic attraction member and the second magnetic attraction member is a permanent magnet It was.
Thereby, the restoring force which faces the direction before the said rotation by rotation can be given to a reflection member.
なお、前記発明の概要は、本発明の必要な全ての特徴を列挙したものではなく、これらの特徴群のサブコンビネーションもまた、発明となりうる。 The summary of the invention does not list all necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.
以下、実施の形態を通じて本発明を詳説するが、以下の実施の形態は特許請求の範囲に係る発明を限定するものではなく、また、実施の形態の中で説明される特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。 Hereinafter, the present invention will be described in detail through embodiments. However, the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.
実施の形態1
図1(a)は、本実施の形態1に係る手振れ補正機能付屈曲光学式ズーム装置100を示す斜視図であり、図1(b)は、手振れ補正機能付屈曲光学式ズーム装置100の要部断面図である。
図1に示すように、手振れ補正機能付屈曲光学式ズーム装置100は、対物レンズ101と、ミラーよりなり、入射光軸を屈折させる反射部材102と、複数のレンズを有するズームレンズ群103と、イメージセンサー104とがケース105内に収納されている。ここで、本明細書では、対物レンズ101の光軸O1をZ(Z軸)方向とし、被写体側をZ軸前方(+Z側または+Z方向)とする。また、Z軸に対して直交し、互いに直交する軸をそれぞれX(X軸)方向及びY(Y軸)方向とし、ズームレンズ群103の光軸P1をY軸方向とする。
Embodiment 1
FIG. 1A is a perspective view showing a bending optical zoom device 100 with a camera shake correction function according to the first embodiment, and FIG. 1B is a schematic diagram of the bending optical zoom device 100 with a camera shake correction function. FIG.
As shown in FIG. 1, a bending optical zoom device 100 with a camera shake correction function includes an objective lens 101, a reflecting member 102 that refracts an incident optical axis, a zoom lens group 103 having a plurality of lenses, and a mirror. The image sensor 104 is accommodated in the case 105. Here, in this specification, the optical axis O1 of the objective lens 101 is the Z (Z-axis) direction, and the subject side is the Z-axis front (+ Z side or + Z direction). The axes orthogonal to the Z axis and orthogonal to each other are defined as an X (X axis) direction and a Y (Y axis) direction, respectively, and the optical axis P1 of the zoom lens group 103 is defined as a Y axis direction.
被写体からの光線は、対物レンズ101を通過して、反射部材102の反射面102Rに到達する。反射面102Rに到達した光線は、ズームレンズ群103に向けて反射され、ズームレンズ群103を通過してイメージセンサー104上に結像される。ズームレンズ群103は、Y軸方向へ移動可能な複数のレンズが組み合わされたものであり、被写体の像を変倍するとともにイメージセンサー104上で合焦させる。 Light rays from the subject pass through the objective lens 101 and reach the reflecting surface 102R of the reflecting member 102. The light beam that has reached the reflecting surface 102R is reflected toward the zoom lens group 103, passes through the zoom lens group 103, and forms an image on the image sensor 104. The zoom lens group 103 is a combination of a plurality of lenses that can move in the Y-axis direction. The zoom lens group 103 scales the image of the subject and focuses it on the image sensor 104.
反射部材102は、切断球状をなす回動部材106Aの掘下面106Dに取付けられ、反射面102Rが回動部材106Aの球弧面106Gの中心W上に形成される。ズームレンズ群103の光軸P1と反射面102Rとの交点Vは、回動部材106Aの球弧面106Gの中心Wと一致する。振動手段107A1〜振動手段107A4は、段付角柱形状をなす圧電振動部材であって、駆動端として形成された先端側面107ASにより球弧面106Gを直径方向に挟持する。対物レンズ101は、その光軸O1が球弧面106Gの中心Wを通るようにケース105に取付けられる。 The reflecting member 102 is attached to the excavation lower surface 106D of the rotating member 106A having a cut spherical shape, and the reflecting surface 102R is formed on the center W of the spherical arc surface 106G of the rotating member 106A. An intersection V between the optical axis P1 of the zoom lens group 103 and the reflecting surface 102R coincides with the center W of the spherical arc surface 106G of the rotating member 106A. The vibration means 107A1 to vibration means 107A4 are piezoelectric vibration members having a stepped prismatic shape, and sandwich the spherical arc surface 106G in the diametrical direction by a tip side surface 107AS formed as a drive end. The objective lens 101 is attached to the case 105 so that its optical axis O1 passes through the center W of the spherical arc surface 106G.
具体的には、振動手段107A1〜振動手段107A4は、球弧面106Gの中心Wを通る反射面102Rの法線Mnと平行となるように延在する。ここで、法線Mnの反射面102R側を前方とし、反射面102R側の反対側を後方とする。また、X軸と平行で交点Vを通る軸線を軸Mxとし、+X方向を+Mx側,−X方向を−Mx側とする。さらに、軸Mxと直交する反射面102R上の軸線を軸Mrとして、+Y方向を+Mr側,−Y方向を−Mr側とする。 Specifically, the vibrating means 107A1 to the vibrating means 107A4 extend so as to be parallel to the normal Mn of the reflecting surface 102R passing through the center W of the spherical arc surface 106G. Here, the reflective surface 102R side of the normal Mn is defined as the front, and the opposite side of the reflective surface 102R is defined as the rear. In addition, an axis parallel to the X axis and passing through the intersection V is defined as the axis Mx, the + X direction is defined as the + Mx side, and the −X direction is defined as the −Mx side. Further, an axis on the reflecting surface 102R orthogonal to the axis Mx is defined as the axis Mr, and the + Y direction is defined as the + Mr side, and the −Y direction is defined as the −Mr side.
法線Mn周りとなる回動部材106Aの最外周部には、振動手段107A1〜振動手段107A4が90度間隔で配置されている。振動手段107A1は+Mr側に配設され、振動手段107A2は−Mx側に配設される。また、振動手段107A3は−Mr側に配設され、振動手段107A4は+Mx側に配設される。 Vibrating means 107A1 to vibrating means 107A4 are arranged at intervals of 90 degrees on the outermost peripheral portion of the rotating member 106A around the normal Mn. The vibration means 107A1 is disposed on the + Mr side, and the vibration means 107A2 is disposed on the −Mx side. The vibration means 107A3 is disposed on the −Mr side, and the vibration means 107A4 is disposed on the + Mx side.
個々の先端側面107AS及び先端側面107ASの根元角部107AKは、球弧面106Gに当接している。具体的には、振動手段107A1と振動手段107A3とが対であり、軸Mr上で回動部材106Aの径方向に対向して回動部材106Aを挟持する。また、振動手段107A2と振動手段107A4とが対であり、軸Mx上で回動部材106Aの径方向に対向して回動部材106Aを挟持する。 Each tip side surface 107AS and the base corner portion 107AK of the tip side surface 107AS are in contact with the spherical arc surface 106G. Specifically, the vibrating means 107A1 and the vibrating means 107A3 are a pair, and sandwich the rotating member 106A opposite to the radial direction of the rotating member 106A on the axis Mr. Further, the vibration means 107A2 and the vibration means 107A4 are a pair, and sandwich the rotation member 106A opposite to the radial direction of the rotation member 106A on the axis Mx.
図1(b)に示すように、法線Mnの後方における球弧面106G上には、軟磁性材料よりなる第1の磁性吸引部材108Mが取付けられている。また、法線Mnのさらに後方であり、ケース105側には、永久磁石材料よりなる第2の磁性吸引部材108Nが取付けられている。第1の磁性吸引部材108Mと第2の磁性吸引部材108Nとは、法線Mnの方向に空隙を隔てて対向し、相互に吸引力が加わっている。そのため、回動部材106Aは、法線Mnの後方に向けて引っ張られ、球弧面106Gが先端側面107ASの根元角部107AKに当接するまで後方に引き下げられる。これにより、回動部材106Aは、振動手段107A1〜振動手段107A4の先端側面107AS及び根元角部107AKによって、中心Wを支点として回動可能、かつ、安定的に支持される。 As shown in FIG. 1B, a first magnetic attraction member 108M made of a soft magnetic material is attached on the spherical arc surface 106G behind the normal line Mn. Further, a second magnetic attraction member 108N made of a permanent magnet material is attached to the case 105 side further behind the normal line Mn. The first magnetic attraction member 108M and the second magnetic attraction member 108N are opposed to each other with a gap in the direction of the normal Mn, and an attractive force is applied to each other. Therefore, the rotation member 106A is pulled toward the rear of the normal line Mn, and is lowered to the rear until the spherical arc surface 106G comes into contact with the root corner portion 107AK of the tip side surface 107AS. Thereby, the rotation member 106A can be rotated about the center W as a fulcrum and stably supported by the distal end side surface 107AS and the base corner portion 107AK of the vibration unit 107A1 to the vibration unit 107A4.
また、第2の磁性吸引部材108Nは、初期位置として回動部材106Aが回動される前(Y,Z平面上)の法線Mn上でケース105側に取付けられているので、第1の磁性吸引部材108Mと第2の磁性吸引部材108Nとの間には、回動部材106Aを法線Mnの後方に向けた吸引力と、回動される前の初期位置に向けた復元力とが常に付与される。そのため、回動部材106Aを回動させたときには、反射部材102を回動される前の最初の向きへと復帰させやすい。
その結果、光軸P1と反射面102Rとの交点Vは、回動部材106Aに取付けられた反射部材102が回動しても移動することがない。よって、反射光の光軸は、反射面102R上でズームレンズ群103の光軸P1からずれることがない。
The second magnetic attraction member 108N is attached to the case 105 side on the normal Mn before the rotation member 106A is rotated as an initial position (on the Y and Z planes). Between the magnetic attraction member 108M and the second magnetic attraction member 108N, there is an attraction force for turning the rotation member 106A toward the rear of the normal Mn and a restoring force toward the initial position before being rotated. Always granted. Therefore, when the rotating member 106A is rotated, it is easy to return the reflecting member 102 to the initial direction before being rotated.
As a result, the intersection V between the optical axis P1 and the reflecting surface 102R does not move even when the reflecting member 102 attached to the rotating member 106A rotates. Therefore, the optical axis of the reflected light does not deviate from the optical axis P1 of the zoom lens group 103 on the reflective surface 102R.
次に、圧電振動部材よりなる振動手段107A1〜振動手段107A4の動作について説明する。
図1(b)に示すように、振動手段107A1〜振動手段107A4を法線Mnと平行な方向に伸縮振動させることによって、中心Wを支点として回動部材106Aを回動可能に安定して支持し、かつ正確に回動させることができる。振動手段107A1〜振動手段107A4は、立ち上がりがなだらかであり、立ち下がりが急峻な鋸歯状の電圧が供給されることにより伸縮振動する。
Next, the operation of the vibration means 107A1 to vibration means 107A4 made of piezoelectric vibration members will be described.
As shown in FIG. 1B, the vibrating means 107A1 to 107A4 are expanded and contracted in a direction parallel to the normal line Mn, so that the rotating member 106A is stably supported with the center W as a fulcrum. And can be accurately rotated. The vibration means 107A1 to the vibration means 107A4 expand and contract by being supplied with a saw-tooth voltage that has a gentle rise and a sharp fall.
図1(b)に示す振動手段107A1は、回動部材106Aの側部(紙面右下側)に配設され、振動手段107A3は、回動部材106Aの側部(紙面左上側)に配設されており、それぞれの先端側面107ASによって回動部材106Aが挟持されている。例えば、振動手段107A1がなだらかに収縮し、振動手段107A3がなだらかに伸長すると、回動部材106Aは軸Mx周り(右回り)に回動する。また、振動手段107A1が急激に収縮し、振動手段107A3が急激に伸長すると、振動手段107A1及び振動手段107A3の先端側面107ASと球弧面106Gとの当接部が滑り、回動部材106Aは右回りに回動された状態で保持される。この動作が繰り返されることにより、回動部材106Aの回動を継続させることができる。また、振動手段107A1及び振動手段107A3の伸縮の振幅を大きくすることによって、回動速度を速めることができる。さらに、振動手段107A1が伸長し、振動手段107A3が収縮すると、回動部材106Aは軸Mx周り(左回り)に回動する。 The vibration means 107A1 shown in FIG. 1B is disposed on the side portion (lower right side of the paper) of the rotation member 106A, and the vibration means 107A3 is disposed on the side portion (upper left side of the paper surface) of the rotation member 106A. The rotating member 106A is sandwiched between the front end side surfaces 107AS. For example, when the vibration means 107A1 is gently contracted and the vibration means 107A3 is gently extended, the rotation member 106A is rotated around the axis Mx (clockwise). Further, when the vibration means 107A1 contracts rapidly and the vibration means 107A3 rapidly expands, the contact portion between the tip side surface 107AS of the vibration means 107A1 and the vibration means 107A3 and the spherical arc surface 106G slips, and the rotating member 106A moves to the right. It is held in a state of being rotated around. By repeating this operation, the rotation of the rotation member 106A can be continued. Further, the rotation speed can be increased by increasing the expansion and contraction amplitudes of the vibration means 107A1 and the vibration means 107A3. Further, when the vibration means 107A1 extends and the vibration means 107A3 contracts, the rotation member 106A rotates about the axis Mx (counterclockwise).
また、回動部材106Aは、振動手段107A2及び振動手段107A4を伸縮させることによって、軸Mr周りを回動する。さらに、振動手段107A1及び振動手段107A3の伸縮と振動手段107A2及び振動手段107A4の伸縮とが同時に行われることにより、回動部材106Aを反射面102R内の任意の軸周りに回動させることができる。 The rotating member 106A rotates about the axis Mr by expanding and contracting the vibrating means 107A2 and the vibrating means 107A4. Further, the expansion and contraction of the vibration means 107A1 and the vibration means 107A3 and the expansion and contraction of the vibration means 107A2 and the vibration means 107A4 are simultaneously performed, so that the rotation member 106A can be rotated around an arbitrary axis in the reflecting surface 102R. .
以上説明したように、本実施の形態1係る手振れ補正機能付屈曲光学式ズーム装置100は、手振れに対応して反射部材102を回動させたときに光軸P1と反射面102Rとの交点Vが移動しない。そのため反射光の光軸は、反射面102R上においてズームレンズ群103の光軸P1からずれることがなく、イメージセンサー104上における画像のブレと歪とを共に抑制することができ、高品質の写真を撮影することができる。 As described above, the bending optical zoom device 100 with the camera shake correction function according to the first embodiment has the intersection V between the optical axis P1 and the reflecting surface 102R when the reflecting member 102 is rotated corresponding to the camera shake. Does not move. For this reason, the optical axis of the reflected light does not deviate from the optical axis P1 of the zoom lens group 103 on the reflecting surface 102R, and both blurring and distortion of the image on the image sensor 104 can be suppressed, and a high-quality photograph. Can be taken.
なお、上記実施の形態1においては、第1の磁性吸引部材108Mを軟磁性材料とし、第2の磁性吸引部材108Nを永久磁石材料としたが、これに限定されることなく、第1の磁性吸引部材108Mを永久磁石材料とし、第2の磁性吸引部材108Nを軟磁性材料としてもよい。また、回動部材106Aが、軸Mx周りおよび軸Mr周りを回動する例を示したが、これに限られず、球弧面106Gの中心Wを通る他の軸線周りを回動するようにしてもよい。また、反射部材102は、ミラーに限定されることなくプリズム等を用いるようにしてもよい。さらに、対物レンズ101が、反射部材102と共に回動部材106Aに取付けられ、反射部材102と共に回動するようにしてもよい。 In the first embodiment, the first magnetic attraction member 108M is made of a soft magnetic material, and the second magnetic attraction member 108N is made of a permanent magnet material. However, the first magnetic attraction member 108M is not limited to this. The attraction member 108M may be made of a permanent magnet material, and the second magnetic attraction member 108N may be made of a soft magnetic material. Further, although the example in which the rotation member 106A rotates about the axis Mx and the axis Mr has been shown, the present invention is not limited to this, and the rotation member 106A is configured to rotate around another axis passing through the center W of the spherical arc surface 106G. Also good. Further, the reflecting member 102 is not limited to a mirror, and a prism or the like may be used. Furthermore, the objective lens 101 may be attached to the rotating member 106 </ b> A together with the reflecting member 102 and rotated together with the reflecting member 102.
実施の形態2
図2(a)は、本実施の形態2に係る手振れ補正機能付屈曲光学式ズーム装置100を示す斜視図であり、図2(b)は、手振れ補正機能付屈曲光学式ズーム装置100の要部断面図である。
同図に示すように、本実施形態に係る手振れ補正機能付屈曲光学式ズーム装置100は、対物レンズ101と、ミラーよりなる反射部材102と、ズームレンズ群103と、イメージセンサー104とがケース105内に収納された点において実施の形態1と同様であるが、回動部材106Biを構成する各種部材と、回動部材106Biを支持及び駆動する振動手段107B1〜振動手段107B4とを備える点において実施形態1と異なる。
Embodiment 2
FIG. 2A is a perspective view showing the bending optical zoom device 100 with a camera shake correction function according to the second embodiment, and FIG. 2B shows the essential parts of the bending optical zoom device 100 with a camera shake correction function. FIG.
As shown in the figure, a bending optical zoom device 100 with a camera shake correction function according to this embodiment includes an objective lens 101, a reflecting member 102 made of a mirror, a zoom lens group 103, and an image sensor 104. Although it is the same as in the first embodiment in that it is housed inside, it is implemented in that it includes various members constituting the rotation member 106Bi and vibration means 107B1 to vibration means 107B4 that support and drive the rotation member 106Bi. Different from Form 1.
被写体からの照射される光線は、対物レンズ101を通過して、反射部材102の反射面102Rに到達する。反射面102Rに到達した光線は、反射面102Rからズームレンズ群103に向けて反射し、ズームレンズ群103を通過してイメージセンサー104上で結像される。ズームレンズ群103は、Y軸方向へ移動可能とされた複数のレンズが組み合わされたものであり、被写体の像を変倍するとともにイメージセンサー104上で合焦させる。 The light beam irradiated from the subject passes through the objective lens 101 and reaches the reflecting surface 102R of the reflecting member 102. The light beam that has reached the reflecting surface 102R is reflected from the reflecting surface 102R toward the zoom lens group 103, passes through the zoom lens group 103, and forms an image on the image sensor 104. The zoom lens group 103 is a combination of a plurality of lenses that are movable in the Y-axis direction. The zoom lens group 103 scales the image of the subject and focuses it on the image sensor 104.
反射部材102は、切断球状の軟磁性部材よりなる回動部材106Biの掘下面106Dに取付けられる。ズームレンズ群103の光軸P1と反射面102Rとの交点Vは、回動部材106Biの球弧面106Gの中心Wと一致する。振動手段107B1〜振動手段107B4は、段付角柱形状をなす磁歪振動部材であって、駆動端として形成された先端側面107BSにより球弧面106Gを直径方向に挟持する。対物レンズ101は、その光軸O1が球弧面106Gの中心Wを通るようにケース105に取付けられる。 The reflecting member 102 is attached to the excavation lower surface 106D of the rotating member 106Bi made of a cut spherical soft magnetic member. The intersection V between the optical axis P1 of the zoom lens group 103 and the reflecting surface 102R coincides with the center W of the spherical arc surface 106G of the rotating member 106Bi. The vibration means 107B1 to the vibration means 107B4 are magnetostrictive vibration members having a stepped prism shape, and the spherical arc surface 106G is sandwiched in the diameter direction by the tip side surface 107BS formed as a driving end. The objective lens 101 is attached to the case 105 so that its optical axis O1 passes through the center W of the spherical arc surface 106G.
振動手段107B1〜振動手段107B4は、それぞれ球弧面106Gの中心Wを通る反射面102Rの法線Mnと平行に延在する。各振動手段107B1〜107B4には、駆動用コイル107bが振動手段107B1〜振動手段107B4の延在方向に沿って巻回されている。 The vibration means 107B1 to vibration means 107B4 each extend in parallel with the normal Mn of the reflection surface 102R passing through the center W of the spherical arc surface 106G. A driving coil 107b is wound around each of the vibration means 107B1 to 107B4 along the extending direction of the vibration means 107B1 to the vibration means 107B4.
法線Mnの周りの回動部材106Biの最外周部には、振動手段107B1〜振動手段107B4が90度間隔で配置されている。振動手段107B1は+Mr側に配設され、振動手段107B2は−Mx側に配設され、振動手段107B3は−Mr側に配設され、振動手段107B4は+Mx側に配設される。 Vibrating means 107B1 to vibrating means 107B4 are arranged at intervals of 90 degrees on the outermost peripheral portion of the rotating member 106Bi around the normal line Mn. The vibration means 107B1 is disposed on the + Mr side, the vibration means 107B2 is disposed on the −Mx side, the vibration means 107B3 is disposed on the −Mr side, and the vibration means 107B4 is disposed on the + Mx side.
個々の先端側面107BS及び先端側面107BSの根元角部107BKは、球弧面106Gに当接している。より詳細には、振動手段107B1と振動手段107B3との対が軸Mr上で回動部材106Biの径方向に対向して回動部材106Biを挟持し、振動手段107B2と振動手段107B4との対が軸Mx上で回動部材106Biの径方向に対向して回動部材106Biを挟持している。 Each tip side surface 107BS and the base corner portion 107BK of the tip side surface 107BS are in contact with the spherical arc surface 106G. More specifically, the pair of the vibration means 107B1 and the vibration means 107B3 is opposed to the radial direction of the rotation member 106Bi on the axis Mr so as to sandwich the rotation member 106Bi, and the pair of the vibration means 107B2 and the vibration means 107B4 is The rotation member 106Bi is sandwiched so as to face the radial direction of the rotation member 106Bi on the axis Mx.
図2(b)の要部断面図に示すように、法線Mnの後方におけるケース105側には、永久磁石よりなる磁気バイアス部材109が取付けられている。回動部材106Biの球弧面106Gと磁気バイアス部材109とは、法線Mnの方向に空隙を隔てて対向し、相互に吸引力が加わっている。そのため、回動部材106Biは、法線Mnの後方に向けて引っ張られ、球弧面106Gが先端側面107BSの根元角部107BKに当接するまで後方に引き下げられる。これにより、回動部材106Biは、振動手段107B1〜振動手段107B4の先端側面107BS及び根元角部107BKによって中心Wを支点として回動可能に、かつ、安定して支持されるため、正確に回動する。
その結果、光軸P1と反射面102Rとの交点Vは、回動部材106Biに取付けられた反射部材102が回動しても移動することがなく、反射光の光軸が反射面102R上でズームレンズ群103の光軸P1からずれない。つまり、反射光の光軸とズームレンズ群103の光軸P1とは、常に一致することになる。
2B, a magnetic bias member 109 made of a permanent magnet is attached to the case 105 side behind the normal line Mn. The spherical arc surface 106G of the rotation member 106Bi and the magnetic bias member 109 face each other with a gap in the direction of the normal line Mn, and an attractive force is applied to each other. Therefore, the rotation member 106Bi is pulled toward the rear of the normal line Mn, and is pulled back until the spherical arc surface 106G comes into contact with the root corner portion 107BK of the tip side surface 107BS. As a result, the rotation member 106Bi can be rotated with the center W as a fulcrum and stably supported by the distal end side surface 107BS and the base corner portion 107BK of the vibration means 107B1 to 107B4. To do.
As a result, the intersection V between the optical axis P1 and the reflecting surface 102R does not move even when the reflecting member 102 attached to the rotating member 106Bi is rotated, and the optical axis of the reflected light is on the reflecting surface 102R. There is no deviation from the optical axis P1 of the zoom lens group 103. That is, the optical axis of the reflected light always coincides with the optical axis P1 of the zoom lens group 103.
次に、磁歪振動部材よりなる振動手段107B1〜振動手段107B4の動作について説明する。
振動手段107B1〜振動手段107B4は、磁気バイアス部材109と回動部材106Biと共に、磁気回路中に設けられている。振動手段107B1〜振動手段107B4には、磁気バイアス部材109によって長手方向に直流磁気バイアス磁界が印加される。振動手段107B1〜振動手段107B4に巻回された駆動用コイル107bには、立ち上がりがなだらかであり、立ち下がりが急峻な鋸歯状の電流が供給されることによって、振動手段107B1〜振動手段107B4が伸縮振動する。
Next, the operation of the vibration means 107B1 to vibration means 107B4 made of magnetostrictive vibration members will be described.
The vibration means 107B1 to vibration means 107B4 are provided in the magnetic circuit together with the magnetic bias member 109 and the rotation member 106Bi. A DC magnetic bias magnetic field is applied to the vibrating means 107B1 to 107B4 in the longitudinal direction by the magnetic bias member 109. The drive coil 107b wound around the vibration means 107B1 to the vibration means 107B4 is supplied with a sawtooth current having a gentle rise and a sharp fall, so that the vibration means 107B1 to the vibration means 107B4 expand and contract. Vibrate.
回動部材106Biは、振動手段107B1〜振動手段107B4が法線Mnと平行な方向に伸縮振動することによって、中心Wを支点として回動することができる。具体的には、図2(b)に示すように、振動手段107B1は回動部材106Biの側部(紙面右下側)に配設され、振動手段107B3は回動部材106Biの側部(紙面左上側)に配設され、それぞれの先端側面107BSが回動部材106Biを挟持している。そして、例えば、振動手段107B1がなだらかに収縮し、振動手段107B3がなだらかに伸長すると、回動部材106Biは軸Mx周りを右回りに回動する。また、例えば、振動手段107B1が急激に収縮し、振動手段107B3が急激に伸長すると、振動手段107B1及び振動手段107B3の先端側面107ASと球弧面106Gとの当接部が滑って、回動部材106Biは右回りに回動された状態が保持される。回動部材106Biは、上記動作が繰り返されることにより回動が継続される。また、振動手段107B1及び振動手段107B3は、振動時に伸縮の振幅を大きくすることによって回動速度を速めることができる。 The rotation member 106Bi can rotate about the center W as a result of the vibration means 107B1 to vibration means 107B4 extending and contracting in a direction parallel to the normal Mn. Specifically, as shown in FIG. 2 (b), the vibration means 107B1 is disposed on the side portion (lower right side of the paper) of the rotation member 106Bi, and the vibration means 107B3 is disposed on the side portion (paper surface of the rotation member 106Bi). Each tip side surface 107BS sandwiches the rotation member 106Bi. For example, when the vibration unit 107B1 is gently contracted and the vibration unit 107B3 is gently expanded, the rotation member 106Bi rotates clockwise around the axis Mx. Further, for example, when the vibration means 107B1 contracts rapidly and the vibration means 107B3 rapidly expands, the contact portion between the tip side surface 107AS of the vibration means 107B1 and the vibration means 107B3 and the spherical arc surface 106G slips, and the rotation member 106Bi is held in a state of being rotated clockwise. The rotation of the rotation member 106Bi is continued by repeating the above operation. Further, the vibration means 107B1 and the vibration means 107B3 can increase the rotation speed by increasing the amplitude of expansion and contraction during vibration.
また、回動部材106Biは、振動手段107B1が伸長し、振動手段107B3が収縮すると、軸Mx周りを左回りに回動する。また、回動部材106Biは、振動手段107B2及び振動手段107B4が伸縮することによって、軸Mr周りを回動する。さらに、振動手段107B1及び振動手段107B3の伸縮と振動手段107B2及び振動手段107B4の伸縮とが同時に行われれば、回動部材106Biを反射面102R内の任意の軸周りに回動させることができる。 Further, the rotation member 106Bi rotates counterclockwise around the axis Mx when the vibration unit 107B1 extends and the vibration unit 107B3 contracts. Further, the rotation member 106Bi rotates around the axis Mr when the vibration unit 107B2 and the vibration unit 107B4 expand and contract. Furthermore, if expansion / contraction of the vibration means 107B1 and the vibration means 107B3 and expansion / contraction of the vibration means 107B2 and the vibration means 107B4 are performed simultaneously, the rotation member 106Bi can be rotated around an arbitrary axis in the reflecting surface 102R.
以上説明したように、本実施の形態2における手振れ補正機能付屈曲光学式ズーム装置100は、手振れに対応して反射部材102を回動させたときに光軸P1と反射面102Rとの交点Vが移動しない。そのため、反射光の光軸が、反射面102R上においてズームレンズ群103の光軸P1からずれることがない。その結果、手振れ補正機能付屈曲光学式ズーム装置100は、イメージセンサー104上における画像のブレと歪とを共に抑制することができ、高品質の写真を撮影することができる。 As described above, the bending optical zoom device 100 with the camera shake correction function according to the second embodiment has the intersection V between the optical axis P1 and the reflecting surface 102R when the reflecting member 102 is rotated in response to the camera shake. Does not move. Therefore, the optical axis of the reflected light does not deviate from the optical axis P1 of the zoom lens group 103 on the reflective surface 102R. As a result, the bending optical zoom device 100 with a camera shake correction function can suppress both blurring and distortion of an image on the image sensor 104, and can take a high-quality photograph.
実施の形態3
図3は、本実施の形態3に係る手振れ補正機能付屈曲光学式ズーム装置100を示す斜視図である。
本実施形態に係る手振れ補正機能付屈曲光学式ズーム装置100は、磁歪振動部材よりなる振動手段107B5〜振動手段107B8が用いられている点において上記実施の形態と同様であるが、対物レンズ101と、ミラーよりなる第1の反射部材102Biと、第2の反射部材102Boと、ズームレンズ群103と、イメージセンサー104とがケース105に収納されるとともに、第1の反射部材102Biが固定され、第2の反射部材102Boが回動される点で異なる。
Embodiment 3
FIG. 3 is a perspective view showing a bending optical zoom device 100 with a camera shake correction function according to the third embodiment.
The bending optical zoom device 100 with a camera shake correction function according to the present embodiment is the same as the above embodiment in that vibration means 107B5 to vibration means 107B8 made of magnetostrictive vibration members are used. The first reflecting member 102Bi made of a mirror, the second reflecting member 102Bo, the zoom lens group 103, and the image sensor 104 are housed in the case 105, and the first reflecting member 102Bi is fixed, The difference is that the two reflecting members 102Bo are rotated.
本実施の形態3に係る手振れ補正機能付屈曲光学式ズーム装置100は、被写体からの光線が対物レンズ101を通過して、第1の反射部材102Biに到達する。第1の反射部材102Biに到達した光線は、ズームレンズ群103に向けて反射され、ズームレンズ群103を通過して第2の反射部材102Boに到達する。第2の反射部材102Boの反射面102Roで反射された光線は、第2の反射部材102Boの+Z側に配設されたイメージセンサー104上に結像する。ズームレンズ群103は、Y軸方向へ移動可能とされた複数のレンズが組み合わされたもので、被写体の像を変倍するとともにイメージセンサー104上で合焦させる。 In the bending optical zoom device 100 with a camera shake correction function according to the third embodiment, a light beam from a subject passes through the objective lens 101 and reaches the first reflecting member 102Bi. The light beam that has reached the first reflecting member 102Bi is reflected toward the zoom lens group 103, passes through the zoom lens group 103, and reaches the second reflecting member 102Bo. The light beam reflected by the reflecting surface 102Ro of the second reflecting member 102Bo forms an image on the image sensor 104 disposed on the + Z side of the second reflecting member 102Bo. The zoom lens group 103 is a combination of a plurality of lenses that are movable in the Y-axis direction. The zoom lens group 103 scales an object image and focuses it on the image sensor 104.
第2の反射部材102Boは、切断球状の軟磁性部材よりなる回動部材106Boの掘下面106Dに取付けられる。ズームレンズ群103の光軸P1は、回動部材106Boの球弧面106Gの中心Wを通る。 The second reflecting member 102Bo is attached to the excavation lower surface 106D of the rotating member 106Bo made of a cut spherical soft magnetic member. The optical axis P1 of the zoom lens group 103 passes through the center W of the spherical arc surface 106G of the rotating member 106Bo.
振動手段107B5〜振動手段107B8は、実施の形態2と同様に、段付角柱形状をなす磁歪振動部材よりなる。振動手段107B5〜振動手段107B8は、駆動端として形成された先端側面107BSにより回動部材106Boの球弧面106Gを直径方向に挟持する。また、個々の先端側面107BS及び先端側面107BSの根元角部107BKが球弧面106Gに当接している。
振動手段107B5〜振動手段107B8は、磁気バイアス部材109と回動部材106Boと共に磁気回路中に設けられており、磁気バイアス部材109によって長手方向に直流磁気バイアス磁界が印加されている。振動手段107B5〜振動手段107B8は、振動手段107B5〜振動手段107B8に巻回された駆動用コイル107bに対し、立ち上がりがなだらかであり、立ち下がりが急峻な鋸歯状の電流が供給されることによって伸縮振動する。
The vibration means 107B5 to the vibration means 107B8 are made of a magnetostrictive vibration member having a stepped prism shape as in the second embodiment. The vibration means 107B5 to the vibration means 107B8 sandwich the spherical arc surface 106G of the rotation member 106Bo in the diameter direction by the tip side surface 107BS formed as a drive end. In addition, each tip side surface 107BS and the base corner portion 107BK of the tip side surface 107BS are in contact with the spherical arc surface 106G.
The vibration means 107B5 to the vibration means 107B8 are provided in the magnetic circuit together with the magnetic bias member 109 and the rotation member 106Bo, and a DC magnetic bias magnetic field is applied in the longitudinal direction by the magnetic bias member 109. The vibration means 107B5 to the vibration means 107B8 are expanded and contracted by supplying a saw-tooth current with a gentle rise to the drive coil 107b wound around the vibration means 107B5 to the vibration means 107B8. Vibrate.
このような複数の反射部材を含む手振れ補正機能付屈曲光学式ズーム装置100であっても、回動部材106Boは、振動手段107B5〜振動手段107B8の先端側面107BS及び根元角部107BKにより、中心Wを支点として回動可能に安定して支持され、かつ正確に回動される。よって、手振れ補正機能付屈曲光学式ズーム装置100は、イメージセンサー104上における画像のブレと歪とを共に抑制することができ、高品質の写真を撮影することができる。なお、手振れ補正機能付屈曲光学式ズーム装置100は、回動部材106Boに加えて、実施の形態2と同様に第1の反射部材102Biを回動部材106Biに取付けて、第1の反射部材102Biと第2の反射部材102Boとの両方を回動するようにしてもよい。 Even in such a bending optical zoom device 100 with a camera shake correction function including a plurality of reflecting members, the rotating member 106Bo has the center W by the tip side surface 107BS and the base corner portion 107BK of the vibrating means 107B5 to 107B8. The fulcrum is used as a fulcrum and is stably supported so as to be pivotable and is pivoted accurately. Therefore, the bending optical zoom device 100 with a camera shake correction function can suppress both blurring and distortion of an image on the image sensor 104, and can take a high-quality photograph. In addition to the rotating member 106Bo, the bending optical zoom device 100 with a camera shake correction function attaches the first reflecting member 102Bi to the rotating member 106Bi as in the second embodiment, and the first reflecting member 102Bi. And the second reflecting member 102Bo may be rotated.
実施の形態4
図4(a)は、実施の形態4に係る手振れ補正機能付屈曲光学式ズーム装置100を示す斜視図であり、図4(b)は、手振れ補正機能付屈曲光学式ズーム装置100の側面図である。また、図5は、本実施の形態に係る手振れ補正機能付屈曲光学式ズーム装置100の要部を示す斜視図及び動作を説明する図である。
本実施形態に係る手振れ補正機能付屈曲光学式ズーム装置100は、対物レンズ101と、ミラーよりなる反射部材102と、ズームレンズ群103と、イメージセンサー104とがケース105内に収納されている。
Embodiment 4
FIG. 4A is a perspective view showing the bending optical zoom device 100 with a camera shake correction function according to the fourth embodiment, and FIG. 4B is a side view of the bending optical zoom device 100 with a camera shake correction function. It is. FIG. 5 is a perspective view showing the main part of the bending optical zoom device 100 with a camera shake correction function according to the present embodiment and a diagram for explaining the operation.
In the bending optical zoom device 100 with a camera shake correction function according to the present embodiment, an objective lens 101, a reflecting member 102 including a mirror, a zoom lens group 103, and an image sensor 104 are housed in a case 105.
被写体からの光線は、対物レンズ101を通過して、反射部材102の反射面102Rに到達する。反射面102Rに到達した光線は、ズームレンズ群103に向けて反射し、ズームレンズ群103を通過してイメージセンサー104上で結像する。ズームレンズ群103は、Y軸方向へ移動可能な複数のレンズが組み合わされたもので、被写体の像を変倍するとともにイメージセンサー104上で合焦させる。 Light rays from the subject pass through the objective lens 101 and reach the reflecting surface 102R of the reflecting member 102. The light beam that has reached the reflecting surface 102R is reflected toward the zoom lens group 103, passes through the zoom lens group 103, and forms an image on the image sensor 104. The zoom lens group 103 is a combination of a plurality of lenses that can move in the Y-axis direction. The zoom lens group 103 scales an object image and focuses it on the image sensor 104.
反射部材102は、切断球状をなす回動部材106Cの切断面106E側に取付けられる。ズームレンズ群103の光軸P1と反射面102Rとの交点Vは、回動部材106Cの球弧面106Gの中心Wと一致する。球弧面106Gには、圧電振動部材よりなり、円柱状をなす3個の振動手段107C1〜振動手段107C3の駆動端である先端縁部107CCが当接している。対物レンズ101は、その光軸O1が球弧面106Gの中心Wを通るようにケース105に取付けられる。 The reflecting member 102 is attached to the cut surface 106E side of the rotating member 106C having a cut spherical shape. An intersection V between the optical axis P1 of the zoom lens group 103 and the reflecting surface 102R coincides with the center W of the spherical arc surface 106G of the rotating member 106C. A tip edge portion 107CC, which is a driving end of three vibrating means 107C1 to 107C3 made of a piezoelectric vibrating member and forming a columnar shape, is in contact with the spherical arc surface 106G. The objective lens 101 is attached to the case 105 so that its optical axis O1 passes through the center W of the spherical arc surface 106G.
図5(a)の分解斜視図に示すように、振動手段107C1〜振動手段107C3は、それぞれが球弧面106Gの中心Wを向いて、中心Wを通る反射面102Rの法線Mnの周りに等間隔に配置されている。また、法線Mn上の後方における球弧面106Gには、軟磁性材料よりなる第1の磁性吸引部材108Mが取付けられている。さらに、法線Mn上の後方におけるケース105側には、永久磁石材料よりなる第2の磁性吸引部材108Nが取付けられている。そして、第1の磁性吸引部材108Mと、第2の磁性吸引部材108Nとは、互いに法線Mnの方向に空隙を隔てて対向している。 As shown in the exploded perspective view of FIG. 5A, each of the vibrating means 107C1 to 107C3 faces the center W of the spherical arc surface 106G and around the normal Mn of the reflecting surface 102R passing through the center W. It is arranged at equal intervals. A first magnetic attraction member 108M made of a soft magnetic material is attached to the spherical arc surface 106G on the rear side on the normal line Mn. Furthermore, a second magnetic attraction member 108N made of a permanent magnet material is attached to the case 105 side behind the normal Mn. The first magnetic attraction member 108M and the second magnetic attraction member 108N are opposed to each other with a gap in the direction of the normal Mn.
すなわち、切断球状をなし、第1の磁性吸引部材108Mが取付けられた回動部材106Cは、ケース105に取付けられた第2の磁性吸引部材108Nにより法線Mn方向後方に引き寄せられ、先端縁部107CCが当接した振動手段107C1〜振動手段107C3により安定的に回動可能に支持される。また、回動部材106Cの球弧面106Gには、振動手段107C1〜振動手段107C3の先端縁部107CCが当接しているので、回動部材106Cを圧電振動により中心Wを支点として回動させることができる。
このようにして、回動部材106Cに取付けられた反射部材102が回動したときに、光軸P1と反射面102Rとの交点Vは移動することがなく、反射光の光軸は反射面102R上においてズームレンズ群103の光軸P1からずれない。
That is, the rotating member 106C having a cut spherical shape and having the first magnetic attraction member 108M attached thereto is attracted rearward in the normal Mn direction by the second magnetic attraction member 108N attached to the case 105, and the leading edge portion 107CC is supported by the vibration means 107C1 to the vibration means 107C3 which are in contact with each other so as to be stably rotatable. Since the tip edge portion 107CC of the vibrating means 107C1 to 107C3 is in contact with the spherical arc surface 106G of the rotating member 106C, the rotating member 106C is rotated about the center W by piezoelectric vibration. Can do.
Thus, when the reflecting member 102 attached to the rotating member 106C is rotated, the intersection V between the optical axis P1 and the reflecting surface 102R does not move, and the optical axis of the reflected light is the reflecting surface 102R. Above, there is no deviation from the optical axis P1 of the zoom lens group 103.
次に、回動部材106Cを回動させる振動手段107C1〜振動手段107C3について説明する。
図5(b)に示すように、振動手段107C1〜107C3は、個別に振動することによって中心Wを支点として、回動部材106Cを光軸P1及び軸Mxの周りに回動させることができる。その結果、反射部材102は、光軸P1と反射面102Rとの交点Vを中心として、軸Mx及び軸Mr(図5(b)参照)の周りに回動することができる。
Next, the vibrating means 107C1 to 107C3 for rotating the rotating member 106C will be described.
As shown in FIG. 5B, the vibration means 107C1 to 107C3 can rotate the rotation member 106C around the optical axis P1 and the axis Mx with the center W as a fulcrum by individually vibrating. As a result, the reflecting member 102 can rotate around the axis Mx and the axis Mr (see FIG. 5B) around the intersection V between the optical axis P1 and the reflecting surface 102R.
すなわち、振動手段107C1〜振動手段107C3は、軸線E1,軸線E2,軸線E3に沿って先端縁部107CCが回動部材106Cの球弧面106Gに当接して、先端縁部107CCが個別に振動する。
図5(c)に示すように、複数の突起部107CDが形成された先端縁部107CCには、振動手段107C1〜振動手段107C3に交流電圧が印加されることにより、縦波と横波とが合成された進行波が形成され、周方向に沿って屈曲弾性波が生じる。このようにして、例えば、軸線E1に沿って球弧面106Gに当接する振動手段107C1を振動させると、回動部材106Cを軸線E1周り(右回りもしくは左回り)の任意の方向e1に回動させることができる。また、同様に、他の振動手段107C2〜振動手段107C3を振動させれば、それぞれ、回動部材106Cを軸線E2周り及び軸線E3周り(右回りもしくは左回り)の任意の方向e2,e3に回動させることができる。
That is, in the vibration means 107C1 to the vibration means 107C3, the tip edge 107CC abuts on the spherical arc surface 106G of the rotating member 106C along the axis E1, the axis E2, and the axis E3, and the tip edge 107CC vibrates individually. .
As shown in FIG. 5C, the longitudinal wave and the transverse wave are combined by applying an alternating voltage to the vibration means 107C1 to the vibration means 107C3 at the tip edge portion 107CC where the plurality of protrusions 107CD are formed. Traveled waves are formed, and bending elastic waves are generated along the circumferential direction. In this way, for example, when the vibrating means 107C1 contacting the spherical arc surface 106G is vibrated along the axis E1, the rotating member 106C is rotated in an arbitrary direction e1 around the axis E1 (clockwise or counterclockwise). Can be made. Similarly, if the other vibrating means 107C2 to 107C3 are vibrated, the rotating member 106C is rotated in any direction e2, e3 around the axis E2 and around the axis E3 (clockwise or counterclockwise), respectively. Can be moved.
そして、これら振動手段107C1〜振動手段107C3による軸線E1〜軸線E3周りの回動を合成することにより、回動部材106Cひいては反射部材102を軸Mx周りに回動させたり、軸Mr周りに回動させたりすることができる。 Then, by synthesizing the rotation around the axis E1 to the axis E3 by the vibration means 107C1 to 107C3, the rotation member 106C and thus the reflection member 102 is rotated about the axis Mx or the axis Mr. You can make it.
このように、実施の形態4に係る手振れ補正機能付屈曲光学式ズーム装置100においても、中心Wを支点として回動可能に安定して支持され、かつ、正確に回動するので、イメージセンサー上に結像する画像が歪むことがなく、高品質の写真を撮影することができる。 As described above, in the bending optical zoom device 100 with the camera shake correction function according to the fourth embodiment, it is stably supported so as to be rotatable about the center W and is rotated accurately. The image formed in the image is not distorted, and a high-quality photograph can be taken.
以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は前記実施の形態に記載の範囲には限定されない。前記実施の形態に、多様な変更または改良を加えることが可能であることが当業者にも明らかである。そのような変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲から明らかである。 As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the embodiment. It is apparent from the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.
100 手振れ補正機能付屈曲光学式ズーム装置、
101 対物レンズ、
102,102Bi,102Bo 反射部材、
102R,102Ro 反射面、
103 ズームレンズ群、
104 イメージセンサー、
105 ケース、
106A,106Bi,106Bo,106C 回動部材、
106G 球弧面、
107A1〜107A4,107B1〜107B8,107C1〜107C3 振動手段。
100 Bending optical zoom device with camera shake correction function,
101 objective lens,
102, 102Bi, 102Bo reflective member,
102R, 102Ro reflecting surface,
103 zoom lens group,
104 Image sensor,
105 cases,
106A, 106Bi, 106Bo, 106C Rotating member,
106G spherical arc surface,
107A1-107A4, 107B1-107B8, 107C1-107C3 Vibrating means.
Claims (5)
複数のレンズを有するズームレンズ群と、
を備えた手振れ補正機能付屈曲光学式ズーム装置であって、
前記反射部材は、切断球状をなす回動部材に取付けられ、反射面が前記回動部材の球弧面の中心上に形成され、
前記球弧面の中心は、前記ズームレンズ群の光軸上に設けられ、
前記回動部材が、前記球弧面に沿って回動可能に挟持されることを特徴とする手振れ補正機能付屈曲光学式ズーム装置。 A reflecting member that bends the incident optical axis;
A zoom lens group having a plurality of lenses;
A bending optical zoom device with a camera shake correction function,
The reflecting member is attached to a rotating member having a cut spherical shape, and a reflecting surface is formed on the center of the spherical arc surface of the rotating member,
The center of the spherical arc surface is provided on the optical axis of the zoom lens group,
The bending optical zoom device with a camera shake correction function, wherein the rotating member is held so as to be rotatable along the spherical arc surface.
前記振動手段の駆動端が、前記回動部材の球弧面と当接し、
前記回動部材は、前記振動手段の駆動端が振動することにより、前記球弧面に沿って回動することを特徴とする請求項1に記載の手振れ補正機能付屈曲光学式ズーム装置。 The bending optical zoom device with a camera shake correction function includes a vibrating means for holding the rotating member,
The drive end of the vibration means is in contact with the spherical surface of the rotating member;
2. The bending optical zoom device with a camera shake correction function according to claim 1, wherein the rotating member rotates along the spherical arc surface when the driving end of the vibration unit vibrates.
前記回動部材の球弧面の径方向に空隙を隔てて対向し、前記回動部材の固定側に取り付けられる第2の磁性吸引部材と、
を備え、
第1の磁性吸引部材及び第2の磁性吸引部材のうち、少なくとも一方が永久磁石であることを特徴とする請求項1乃至請求項4のいずれかに記載の手振れ補正機能付屈曲光学式ズーム装置。 A first magnetic attraction member which is opposed to the radial direction of the spherical arc surface of the rotating member with a gap and is attached to the spherical arc surface;
A second magnetic attraction member that is opposed to the radial direction of the arcuate surface of the rotating member with a gap and is attached to the fixed side of the rotating member;
With
5. The bending optical zoom device with a camera shake correction function according to claim 1, wherein at least one of the first magnetic attraction member and the second magnetic attraction member is a permanent magnet. .
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