JP6016476B2 - Lens barrel and imaging device - Google Patents
Lens barrel and imaging device Download PDFInfo
- Publication number
- JP6016476B2 JP6016476B2 JP2012144342A JP2012144342A JP6016476B2 JP 6016476 B2 JP6016476 B2 JP 6016476B2 JP 2012144342 A JP2012144342 A JP 2012144342A JP 2012144342 A JP2012144342 A JP 2012144342A JP 6016476 B2 JP6016476 B2 JP 6016476B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- lens barrel
- optical axis
- lens
- axis direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Lens Barrels (AREA)
Description
本発明は、撮像装置本体と電気的な接続を行うためのフレキシブルプリント基板を装備したレンズ鏡筒、及びこのレンズ鏡筒を備える撮像装置に関する。 The present invention relates to a lens barrel equipped with a flexible printed circuit board for electrical connection with an imaging device body, and an imaging device including the lens barrel.
デジタルカメラ等の撮像装置では、撮影レンズを保持するレンズ鏡筒の電動ユニットと撮像装置本体とを電気的に接続する手段として、フレキシブルプリント基板（以下「ＦＰＣ」と記す）が使用されている。図１０は、ＦＰＣを介してカメラ本体と電気的に接続されるレンズ鏡筒の従来の構成例を示す断面図である。 In an imaging apparatus such as a digital camera, a flexible printed circuit board (hereinafter referred to as “FPC”) is used as means for electrically connecting an electric unit of a lens barrel that holds a photographing lens and an imaging apparatus body. FIG. 10 is a cross-sectional view showing a conventional configuration example of a lens barrel electrically connected to a camera body through an FPC.
カメラ本体１０１に装着されたレンズ鏡筒１００は、レンズＬ１，Ｌ２，Ｌ３，Ｌ４と、電気部品１０２，１０３，１０４と、ＦＰＣ１０５，１０６を備えている。折り曲げガイド部材１０７に沿ってＦＰＣ１０５，１０６を折り曲げ、クリップ部材１０８を用いてＦＰＣ１０５，１０６の折り曲げ部を折り曲げガイド部材１０７に挟持、固定している。これにより、ＦＰＣ１０５，１０６は、所定の方向にガイド（案内）されている（特許文献１参照）。 A lens barrel 100 attached to the camera body 101 includes lenses L1, L2, L3, and L4, electrical components 102, 103, and 104, and FPCs 105 and 106. The FPCs 105 and 106 are bent along the bending guide member 107, and the bent portions of the FPCs 105 and 106 are sandwiched and fixed to the bending guide member 107 using the clip member 108. Thus, the FPCs 105 and 106 are guided (guided) in a predetermined direction (see Patent Document 1).
しかしながら、図１０に示した構造では、ＦＰＣ１０５，１０６を誘導するために、折り曲げガイド部材１０７とクリップ部材１０８をレンズ鏡筒１００の内部に配置する必要がある。そのため、部品点数が増加し、レンズ鏡筒１００の外径も大きくなってしまうという問題がある。 However, in the structure shown in FIG. 10, it is necessary to arrange the bending guide member 107 and the clip member 108 inside the lens barrel 100 in order to guide the FPCs 105 and 106. Therefore, there are problems that the number of parts increases and the outer diameter of the lens barrel 100 also increases.
本発明は、部品点数を増加させず、また、レンズ鏡筒の外径を大きくすることなく、内部にフレキシブルプリント基板を確実に収納することができるレンズ鏡筒を提供することを目的とする。 An object of the present invention is to provide a lens barrel that can securely store a flexible printed circuit inside without increasing the number of components and without increasing the outer diameter of the lens barrel.
本発明に係るレンズ鏡筒は、光軸方向において移動可能なレンズユニットを備え、前記レンズユニットは、レンズと、前記レンズを保持する保持部材と、電子部品とを有するレンズ鏡筒であって、前記電子部品と電気的に接続されるフレキシブルプリント基板を備え、前記フレキシブルプリント基板は、前記レンズの周囲に配置される湾曲部を有し、前記湾曲部は、一端が前記保持部材に保持されると共に他端が屈曲部となって前記光軸方向と略直交するように配置される第１の湾曲部と、一端が前記屈曲部となって前記第１の湾曲部とつながると共に他端が前記レンズ鏡筒の内部において前記レンズユニット以外の部位に固定され、前記光軸方向と略直交して前記第１の湾曲部と対向するように配置される第２の湾曲部と、を有し、前記屈曲部の近傍に前記光軸方向と略直交するように配置される第１の湾曲部と前記光軸方向と略直交するように配置される第２の湾曲部とを接着する接着部材が設けられ、前記レンズユニットが前記光軸周りに回転することなく前記光軸方向において並進移動する際に、前記レンズユニット以外の前記部位に対する前記レンズユニットの並進移動量が前記屈曲部の屈曲角度が変わることによって吸収されることを特徴とする。 A lens barrel according to the present invention includes the possible lens unit moves in the optical axis direction, the lens unit includes a lens, a holding member for holding the lens, a lens barrel and a electronic components A flexible printed circuit board electrically connected to the electronic component, the flexible printed circuit board having a curved portion disposed around the lens, and one end of the curved portion held by the holding member. And the other end becomes a bent portion and is arranged so as to be substantially orthogonal to the optical axis direction, and one end becomes the bent portion and is connected to the first bent portion, and the other end is A second bending portion that is fixed to a portion other than the lens unit inside the lens barrel and is disposed so as to be substantially orthogonal to the optical axis direction and to face the first bending portion. , said bending An adhesive member is provided in the vicinity of the portion for bonding the first curved portion disposed so as to be substantially orthogonal to the optical axis direction and the second curved portion disposed so as to be substantially orthogonal to the optical axis direction. the when the lens unit is translated in the optical axis direction without rotating around the optical axis, the translational movement of the lens unit with respect to the portion other than the lens unit is changed bending angle of the bent portion It is absorbed by.
本発明によれば、部品点数を増加させず、また、レンズ鏡筒の外径を大きくすることなく、レンズ鏡筒の内部にフレキシブルプリント基板を確実に収納することが可能になる。 According to the present invention, it is possible to securely store the flexible printed circuit board inside the lens barrel without increasing the number of parts and without increasing the outer diameter of the lens barrel.
以下、本発明の実施の形態について添付図面を参照して詳細に説明する。ここでは、本発明に係るレンズ鏡筒を備える撮像装置として、所謂、デジタルカメラを取り上げることとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, a so-called digital camera is taken up as an imaging apparatus including the lens barrel according to the present invention.
＜デジタルカメラの外観構成＞
図１は、本発明の実施形態に係るデジタルカメラの外観斜視図であり、図１（ａ）は正面側斜視図であり、図１（ｂ）は背面側斜視図である。図１の各斜視図は、デジタルカメラのレンズ鏡筒２がデジタルカメラのカメラ本体１に繰り込まれて収納された状態（沈胴状態）を示している。図２は、レンズ鏡筒２がカメラ本体１から繰り出した繰出状態にあるときのデジタルカメラの外観斜視図（正面側斜視図）である。
<Appearance structure of digital camera>
FIG. 1 is an external perspective view of a digital camera according to an embodiment of the present invention, FIG. 1 (a) is a front perspective view, and FIG. 1 (b) is a rear perspective view. Each perspective view of FIG. 1 shows a state (collapsed state) in which the lens barrel 2 of the digital camera is retracted and stored in the camera body 1 of the digital camera. FIG. 2 is an external perspective view (front side perspective view) of the digital camera when the lens barrel 2 is in the extended state in which the lens barrel 2 is extended from the camera body 1.
図１（ａ）及び図２に示すように、デジタルカメラは、カメラ本体１の正面ほぼ中央に、被写体像を光電変換して画像デ−タを生成するＣＣＤやＣＭＯＳイメ−ジセンサ等の撮像素子（不図示）に光学像を結像させる沈胴式のレンズ鏡筒２を備える。レンズ鏡筒２は、電源がオフのときには、図１（ａ）に示すようにカメラ本体１に繰り込まれた収納状態（沈胴状態）になり、電源がオンされると、図２に示すようにカメラ本体１から繰り出された繰出状態となる。また、カメラ本体１の正面側には、撮影者が被写体を肉眼で確認するためのファインダ７と、測距を行う場合の補助光を発光する補助光発光部８とが配置されている。 As shown in FIGS. 1A and 2, the digital camera has an image pickup device such as a CCD or CMOS image sensor that generates image data by photoelectrically converting a subject image at the front center of the camera body 1. A retractable lens barrel 2 for forming an optical image (not shown) is provided. When the power is off, the lens barrel 2 is in the retracted state (collapsed state) as shown in FIG. 1A, and when the power is turned on, as shown in FIG. In this state, the camera is extended from the camera body 1. Further, on the front side of the camera body 1, a finder 7 for the photographer to confirm the subject with the naked eye and an auxiliary light emitting unit 8 for emitting auxiliary light for distance measurement are arranged.
カメラ本体１の上面部には、電源ボタン３、レリーズボタン４及びズームレバー５等の操作部材と、ストロボ９が設けられている。なお、図１及び図２には、ストロボ９はカメラ本体１に収納された状態が示されており、ストロボ９は、発光時にはストロボ光がレンズ鏡筒２にケラレないように、カメラ本体１からポップアップする構造となっている。 On the upper surface of the camera body 1, operation members such as a power button 3, a release button 4, a zoom lever 5, and a strobe 9 are provided. FIGS. 1 and 2 show a state in which the strobe 9 is housed in the camera body 1. The strobe 9 can be removed from the camera body 1 so that the strobe light does not shine on the lens barrel 2 during light emission. It has a structure that pops up.
図１（ｂ）に示すように、カメラ本体１の背面側には、機能切り替え等を行うための複数の操作ボタン６と、撮影画像やカメラ本体１の各種機能の設定メニュー等を表示するため液晶ディスプレイ等からなる表示部６０が設けられている。また、カメラ本体１を背面側から見たときの右側面には、ストラップ取り付け用部材６１と、外部出力ケーブル用コネクタ（不図示）を覆う開閉可能なコネクタ蓋６２が設けられている。 As shown in FIG. 1B, on the back side of the camera body 1, a plurality of operation buttons 6 for performing function switching, a setting menu for various functions of the camera body 1, and the like are displayed. A display unit 60 composed of a liquid crystal display or the like is provided. In addition, a strap attachment member 61 and an openable / closable connector lid 62 that covers an external output cable connector (not shown) are provided on the right side when the camera body 1 is viewed from the back side.
＜レンズ鏡筒２の構成＞
レンズ鏡筒２の繰出動作の概要について、図３を参照して説明する。図３（ａ）は、収納状態（沈胴状態）にあるレンズ鏡筒２をデジタルカメラの背面側から見た斜視図であり、図３（ｂ）は、レンズ鏡筒２の分解斜視図である。
<Configuration of lens barrel 2>
An outline of the feeding operation of the lens barrel 2 will be described with reference to FIG. 3A is a perspective view of the lens barrel 2 in the retracted state (collapsed state) as seen from the back side of the digital camera, and FIG. 3B is an exploded perspective view of the lens barrel 2. .
レンズ鏡筒２は、１群レンズユニット１０と、２群レンズユニット２０と、３群レンズユニット３０と、シャッタユニット４０と、第１カム筒７０と、第１固定筒７１と、駆動筒７２と、第２固定筒７３と、センサホルダユニット５０とを備える。 The lens barrel 2 includes a first group lens unit 10, a second group lens unit 20, a third group lens unit 30, a shutter unit 40, a first cam cylinder 70, a first fixed cylinder 71, and a drive cylinder 72. The second fixed cylinder 73 and the sensor holder unit 50 are provided.
１群レンズユニット１０は１群レンズ１１を保持しており、１群レンズユニット１０の内周部には、周方向に１２０度間隔で等分した３箇所に１群カムフォロア１２が設けられている。２群レンズユニット２０は２群レンズ２１を保持しており、２群レンズユニット２０の外周部には、周方向に１２０度間隔で等分した３箇所に、２群カムフォロア２２が設けられている。 The first group lens unit 10 holds a first group lens 11, and the first group cam followers 12 are provided at three locations equally divided at 120 ° intervals in the circumferential direction on the inner periphery of the first group lens unit 10. . The second group lens unit 20 holds a second group lens 21, and a second group cam follower 22 is provided on the outer periphery of the second group lens unit 20 at three locations equally divided at 120 ° intervals in the circumferential direction. .
３群レンズユニット３０は、３群レンズ３１と、３群レンズ３１を保持する３群駆動部材３５と、３群駆動部材３５を保持する３群保持部材３２を備える。３群保持部材３２の外周部には、周方向に１２０度間隔で等分した３箇所に、３群カムフォロア３２ａが設けられている。なお、３群レンズユニット３０の構造については、後に詳細に説明する。 The third group lens unit 30 includes a third group lens 31, a third group driving member 35 that holds the third group lens 31, and a third group holding member 32 that holds the third group driving member 35. On the outer peripheral portion of the third group holding member 32, third group cam followers 32a are provided at three locations equally divided at 120 degree intervals in the circumferential direction. The structure of the third group lens unit 30 will be described in detail later.
シャッタユニット４０は、シャッタバネ（不図示）及びシャッタ用駆動モータ（不図示）を備えており、シャッタ用駆動モータでシャッタバネを開閉する構造となっている。シャッタユニット４０の外周部には、周方向に１２０度間隔で等分した３箇所に、シャッタユニットカムフォロア４２が設けられている。 The shutter unit 40 includes a shutter spring (not shown) and a shutter drive motor (not shown), and is configured to open and close the shutter spring with the shutter drive motor. On the outer periphery of the shutter unit 40, shutter unit cam followers 42 are provided at three locations equally divided at 120 degree intervals in the circumferential direction.
センサホルダユニット５０は、撮像素子を実装したセンサフレキ５１と、鏡筒駆動モータ５２と、鏡筒駆動ギヤ群５３と、制御基板（不図示）と鏡筒駆動モータ５２とを電気的に接続するための鏡筒ＦＰＣ（鏡筒フレキシブルプリント基板）５４とを備える。レンズ鏡筒２をカメラ本体１から繰り出すとき、制御基板（不図示）から鏡筒ＦＰＣ５４を介して鏡筒駆動モータ５２に電力が供給される。これにより、鏡筒駆動モータ５２が駆動し、鏡筒駆動モータ５２の駆動力は、鏡筒駆動ギヤ群５３と駆動筒７２の駆動筒ギヤ部７２ａを介して駆動筒７２に伝達される。こうして、駆動筒７２は、レンズ鏡筒２の光軸を中心として回転する。 The sensor holder unit 50 is for electrically connecting the sensor flexible board 51 mounted with an image sensor, a lens barrel drive motor 52, a lens barrel drive gear group 53, a control board (not shown), and the lens barrel drive motor 52. Lens barrel FPC (lens barrel flexible printed circuit board) 54. When the lens barrel 2 is extended from the camera body 1, power is supplied from a control board (not shown) to the barrel drive motor 52 via the barrel FPC 54. Thereby, the lens barrel driving motor 52 is driven, and the driving force of the lens barrel driving motor 52 is transmitted to the driving cylinder 72 via the lens barrel driving gear group 53 and the driving cylinder gear portion 72 a of the driving cylinder 72. Thus, the drive cylinder 72 rotates around the optical axis of the lens barrel 2.
ここで、第１カム筒７０の外周部には、周方向に１２０度間隔で等分した３箇所に、第１カム筒カムフォロア７０ａが設けられている。第１カム筒カムフォロア７０ａは、第１固定筒７１に形成された第１固定筒カム溝７１ｂを貫通して、駆動筒７２に形成された駆動筒カム溝７２ｂに係合している。そのため、駆動筒７２が回転すると第１カム筒７０は、光軸を中心に回転しながら光軸方向に移動する。 Here, on the outer peripheral portion of the first cam cylinder 70, first cam cylinder cam followers 70a are provided at three locations equally divided at intervals of 120 degrees in the circumferential direction. The first cam cylinder cam follower 70 a passes through the first fixed cylinder cam groove 71 b formed in the first fixed cylinder 71 and engages with the drive cylinder cam groove 72 b formed in the drive cylinder 72. Therefore, when the drive cylinder 72 rotates, the first cam cylinder 70 moves in the optical axis direction while rotating about the optical axis.
第１カム筒７０の外周側には、１群レンズユニット１０に設けられた１群カムフォロア１２と係合する第１カム筒外周カム溝７０ｂが形成されている。そのため、１群レンズユニット１０は、第１カム筒７０の回転移動にしたがって、第１カム筒外周カム溝７０ｂに倣って光軸方向に移動する。 On the outer peripheral side of the first cam cylinder 70, a first cam cylinder outer peripheral cam groove 70b that engages with the first group cam follower 12 provided in the first group lens unit 10 is formed. Therefore, the first group lens unit 10 moves in the optical axis direction following the first cam cylinder outer peripheral cam groove 70b as the first cam cylinder 70 rotates.
第１カム筒７０の内周側には、シャッタユニット４０に設けられたシャッタユニットカムフォロア４２と係合する第１カム筒内周カム溝７０ｃと、３群レンズユニット３０に設けられた３群カムフォロア３２ａと係合する第１カム筒内周カム溝７０ｄが形成されている。そのため、シャッタユニット４０と２群レンズユニット２０はそれぞれ、第１カム筒７０の回転移動にしたがって、第１カム筒内周カム溝７０ｃ，７０ｄに倣って光軸方向に移動する。 On the inner peripheral side of the first cam cylinder 70, a first cam cylinder inner peripheral cam groove 70 c that engages with a shutter unit cam follower 42 provided in the shutter unit 40, and a third group cam follower provided in the third group lens unit 30. A first cam cylinder inner circumferential cam groove 70d that engages with 32a is formed. Therefore, the shutter unit 40 and the second group lens unit 20 move in the optical axis direction following the first cam cylinder inner peripheral cam grooves 70c and 70d according to the rotational movement of the first cam cylinder 70, respectively.
駆動筒７２の内周側には、３群レンズユニット３０に設けられた３群カムフォロア３２ａと係合する駆動筒内周カム溝７２ｃが形成されている。駆動筒７２が回転すると、３群レンズユニット３０は、駆動筒内周カム溝７２ｃに倣って光軸方向に移動する。 A drive cylinder inner peripheral cam groove 72 c that engages with a third group cam follower 32 a provided in the third group lens unit 30 is formed on the inner peripheral side of the drive cylinder 72. When the drive cylinder 72 rotates, the third group lens unit 30 moves in the optical axis direction following the drive cylinder inner peripheral cam groove 72c.
デジタルカメラの電源がオンされると、以上の動作により、レンズ鏡筒２はカメラ本体１から繰り出され、図１（ａ）に示す状態から図２に示す状態へと遷移する。 When the power supply of the digital camera is turned on, the lens barrel 2 is extended from the camera body 1 by the above operation, and transitions from the state shown in FIG. 1A to the state shown in FIG.
＜３群レンズユニット３０の構成＞
３群レンズユニット３０の構成について、図４及び図５を参照して説明する。図４（ａ）は、３群レンズユニット３０をデジタルカメラの背面側から見た外観斜視図であり、図４（ｂ）は、３群レンズユニット３０の分解斜視図である。また、図５は、図４（ａ），（ｂ）に示す３群ＦＰＣ（３群フレキシブルプリント基板）３４の展開図である。
<Configuration of Third Group Lens Unit 30>
The configuration of the third group lens unit 30 will be described with reference to FIGS. 4 and 5. 4A is an external perspective view of the third group lens unit 30 as viewed from the back side of the digital camera, and FIG. 4B is an exploded perspective view of the third group lens unit 30. FIG. 5 is a development view of the third group FPC (third group flexible printed circuit board) 34 shown in FIGS. 4 (a) and 4 (b).
図４（ａ），（ｂ）に示すように、３群レンズユニット３０は、３群レンズ３１と、３群駆動部材３５と、３群駆動モータ３３と、ビス３８と、３群駆動ラック３６と、スプリング３７と、３群保持部材３２と、３群ＦＰＣ３４とを備える。 As shown in FIGS. 4A and 4B, the third group lens unit 30 includes a third group lens 31, a third group drive member 35, a third group drive motor 33, a screw 38, and a third group drive rack 36. And a spring 37, a third group holding member 32, and a third group FPC 34.
３群ＦＰＣ３４は、各種の電子部品と電気的に接続される。具体的には、３群ＦＰＣ３４が備える半田部３４ｄは、３群保持部材３２に保持された電子部品の一例である３群駆動モータ３３と電気的に接続される。また、３群ＦＰＣ３４には、３群駆動部材３５の位置を検出する電子部品の一例であるフォトインタラプタ等の位置検出センサ３４ｃが取り付けられている。更に、３群ＦＰＣ３４は、３群フレキ位置決め穴３４ｈを有する。３群ＦＰＣ３４は、３群保持部材３２に光軸方向に突出するように設けられた突起部である３群保持部材ダボ３２ｃに３群フレキ位置決め穴３４ｈが圧入されることで、３群保持部材３２に対して位置決めされ、保持される。更に、３群ＦＰＣ３４は、３群フレキ端子部３４ｂを有し、３群フレキ端子部３４ｂは、本実施形態では、３群レンズユニット以外の部位であるセンサホルダユニット５０に設けられたコネクタ５５（図３（ａ）参照）と電気的に接続、固定される。 The third group FPC 34 is electrically connected to various electronic components. Specifically, the solder portion 34 d included in the third group FPC 34 is electrically connected to a third group drive motor 33 that is an example of an electronic component held by the third group holding member 32. In addition, a position detection sensor 34c such as a photo interrupter, which is an example of an electronic component that detects the position of the third group driving member 35, is attached to the third group FPC 34. Further, the third group FPC 34 has a third group flexible positioning hole 34h. The third group FPC 34 is formed by press-fitting a third group flexible positioning hole 34h into a third group holding member dowel 32c that is a protrusion provided in the third group holding member 32 so as to protrude in the optical axis direction. Positioned relative to 32 and held. Further, the third group FPC 34 includes a third group flexible terminal portion 34b. In the present embodiment, the third group flexible terminal portion 34b is a connector 55 (provided on the sensor holder unit 50, which is a part other than the third group lens unit). Electrically connected to and fixed to FIG.
３群駆動部材３５は、穴部３５ｂを有する。穴部３５ｂに３群保持部材３２に設けられた３群保持部材軸部３２ｂが挿通保持されることで、３群駆動部材３５は、３群保持部材軸部３２ｂに対して光軸方向に移動可能となっている。また、３群駆動部材３５は、３群レンズ３１と、３群駆動ラック３６と、スプリング３７を保持している。３群駆動ラック３６に設けられた３群駆動ラックネジ部と３群駆動モータ３３に設けられた３群駆動モータネジ部３３ａとが螺合し、スプリング３７は、３群駆動ラック３６を３群駆動モータネジ部３３ａに付勢している。 The third group driving member 35 has a hole 35b. The third group holding member shaft 32b provided in the third group holding member 32 is inserted and held in the hole 35b, so that the third group driving member 35 moves in the optical axis direction with respect to the third group holding member shaft 32b. It is possible. The third group drive member 35 holds a third group lens 31, a third group drive rack 36, and a spring 37. The third group drive rack screw portion provided in the third group drive rack 36 and the third group drive motor screw portion 33a provided in the third group drive motor 33 are screwed together, and the spring 37 connects the third group drive rack 36 to the third group drive motor screw. The portion 33a is urged.
３群保持部材軸部３２ｂから３群駆動部材３５を繰り出すとき、制御基板（不図示）から鏡筒ＦＰＣ５４（図３（ａ）参照）及び３群ＦＰＣ３４を介して、３群駆動モータ３３に電力が供給される。これにより３群駆動モータ３３が駆動すると、３群駆動モータネジ部３３ａが回転駆動する。３群駆動モータネジ部３３ａの回転駆動力は、３群駆動ラック３６を介して３群駆動部材３５に伝達され、３群駆動部材３５を光軸方向に移動させる。こうして、３群駆動部材３５を光軸方向で移動させることにより（被写体側へ進出させ、或いは、被写体側から退避させることにより）、フォーカス動作が行われる。 When the three-group holding member shaft portion 32 b feeds the third group driving member 35, from the control board (not shown) through the barrel FPC54 (see FIG. 3 (a)) and 3 groups FPC 34, the third group motor 33 Power is supplied. Accordingly, when the third group driving motor 33 is driven, the third group driving motor screw portion 33a is rotationally driven. The rotational driving force of the third group drive motor screw portion 33a is transmitted to the third group drive member 35 via the third group drive rack 36, and moves the third group drive member 35 in the optical axis direction. Thus, the focusing operation is performed by moving the third group driving member 35 in the direction of the optical axis (by moving toward the subject side or withdrawing from the subject side).
図５に示すように、３群ＦＰＣ３４は、３群レンズ３１の周囲に配置され、３群保持部材３２のリング形状に沿って湾曲した形状を有する３群フレキ湾曲部３４ｗを有する。３群フレキ湾曲部３４ｗは、第１の湾曲部（以下「第１湾曲部」と記す）３４ｘと第２の湾曲部（以下「第２湾曲部」と記す）３４ｙを有する。 As shown in FIG. 5, the third group FPC 34 includes a third group flexible bending portion 34 w that is disposed around the third group lens 31 and has a shape curved along the ring shape of the third group holding member 32. The third group flexible bending portion 34w includes a first bending portion (hereinafter referred to as “first bending portion”) 34x and a second bending portion (hereinafter referred to as “second bending portion”) 34y.
３群ＦＰＣ３４では、図４に示すように、第１湾曲部３４ｘと第２湾曲部３４ｙとが対向するように（光軸方向に見たときに重なるように）、３群ＦＰＣ屈曲部３４ａにおいて３群フレキ湾曲部３４ｗを屈曲させている。そのため、図４に示されるように、第１湾曲部３４ｘと第２湾曲部３４ｙは、光軸と略直交するように対向して配置される。第１湾曲部３４ｘは、その一端に備える３群フレキ位置決め穴３４ｈにより３群保持部材３２に対して位置決めされて保持され、他端が３群ＦＰＣ屈曲部３４ａとなっている。第２湾曲部３４ｙは、一端が３群ＦＰＣ屈曲部３４ａとなっており、他端がコネクタ５５に固定される３群フレキ端子部３４ｂとなっている。 In the third group FPC 34, as shown in FIG. 4, in the third group FPC bent portion 34a, the first bending portion 34x and the second bending portion 34y face each other (so as to overlap when viewed in the optical axis direction). The third group flexible bending portion 34w is bent. Therefore, as shown in FIG. 4, the first bending portion 34 x and the second bending portion 34 y are arranged to face each other so as to be substantially orthogonal to the optical axis. The first bending portion 34x is positioned and held with respect to the third group holding member 32 by a third group flexible positioning hole 34h provided at one end thereof, and the other end is a third group FPC bent portion 34a. One end of the second bending portion 34 y is a third group FPC bent portion 34 a and the other end is a third group flexible terminal portion 34 b that is fixed to the connector 55.
本実施形態では、３群ＦＰＣ屈曲部３４ａの位置を明確にしておくために、銅箔からなる配線補強部３４ｅを、３群ＦＰＣ３４の外形端に３群ＦＰＣ屈曲部３４ａを挟んで一定間隔で分離させた形態で設けている。つまり、配線補強部３４ｅの分離領域に３群ＦＰＣ屈曲部３４ａを設けることで、視覚的に配線補強部３４ｅの位置を認識することが容易になる。また、配線補強部３４ｅの分離領域では、配線補強部３４ｅが設けられている部分に比べて剛性が弱くなるため、この分離領域に３群ＦＰＣ屈曲部３４ａを設けることで、正確に３群フレキ湾曲部３４ｗを屈曲させることができるようになる。 In this embodiment, in order to clarify the position of the third group FPC bent portion 34a, the wiring reinforcing portion 34e made of copper foil is placed at regular intervals with the third group FPC bent portion 34a sandwiched between the outer edges of the third group FPC 34. It is provided in a separated form. That is, by providing the third group FPC bent portion 34a in the separation region of the wiring reinforcing portion 34e, it becomes easy to visually recognize the position of the wiring reinforcing portion 34e. In addition, the separation region of the wiring reinforcement portion 34e is less rigid than the portion where the wiring reinforcement portion 34e is provided. Therefore, by providing the third group FPC bent portion 34a in this separation region, the three-group flexible cable is accurately provided. The curved portion 34w can be bent.
＜レンズ鏡筒２の繰り出し動作時の３群レンズユニット３０の挙動＞
レンズ鏡筒２の繰り出し動作時における３群レンズユニット３０の挙動について、３群ＦＰＣ３４の撓み方を踏まえて、図６及び図７を参照して説明する。
<Behavior of the third group lens unit 30 when the lens barrel 2 is extended>
The behavior of the third group lens unit 30 during the extension operation of the lens barrel 2 will be described with reference to FIGS. 6 and 7 in consideration of how the third group FPC 34 bends.
図６（ａ）は、レンズ鏡筒２が沈胴状態にあるときの３群レンズユニット３０の分解斜視図であり、図６（ｂ）は、レンズ鏡筒２が繰出状態にあるときの３群レンズユニット３０の分解斜視図である。図７（ａ）は、レンズ鏡筒２の繰出状態を示す正面図であり、図７（ｂ）は、図７（ａ）に示す矢視Ａ−Ａ断面図である。 6A is an exploded perspective view of the third group lens unit 30 when the lens barrel 2 is in the retracted state, and FIG. 6B is a third group when the lens barrel 2 is in the extended state. 2 is an exploded perspective view of a lens unit 30. FIG. Fig.7 (a) is a front view which shows the drawing-out state of the lens-barrel 2, FIG.7 (b) is arrow AA sectional drawing shown to Fig.7 (a).
図６（ａ）に示すように、レンズ鏡筒２が沈胴状態にあるとき、第１湾曲部３４ｘと第２湾曲部３４ｙとは、ほぼ平行な状態となっている。このとき、３群ＦＰＣ３４には撓みもなく、３群レンズユニット３０とセンサホルダユニット５０との間に収まっている。 As shown in FIG. 6A, when the lens barrel 2 is in the retracted state, the first bending portion 34x and the second bending portion 34y are in a substantially parallel state. At this time, the third group FPC 34 is not bent and is located between the third group lens unit 30 and the sensor holder unit 50.
図６（ｂ）に示すように、レンズ鏡筒２がカメラ本体１から繰り出した繰出状態では、３群レンズユニット３０は光軸方向を被写体側に移動し、３群ＦＰＣ３４は第１湾曲部３４ｘと第２湾曲部３４ｙとが離れる方向に屈曲する。３群ＦＰＣ３４は３群保持部材ダボ３２ｃとコネクタ５５とで固定されているが、第１湾曲部３４ｘと第２湾曲部３４ｙは固定されておらず、移動自由な領域となっている。そのため、３群ＦＰＣ３４の屈曲のみで３群レンズユニット３０の移動量を吸収することができる。 As shown in FIG. 6B, in the extended state in which the lens barrel 2 is extended from the camera body 1, the third group lens unit 30 moves the optical axis direction to the subject side, and the third group FPC 34 has the first curved portion 34x. And the second bending portion 34y bend in a direction away from each other. The third group FPC 34 is fixed by the third group holding member dowel 32c and the connector 55, but the first bending portion 34x and the second bending portion 34y are not fixed and are movable regions. Therefore, the movement amount of the third group lens unit 30 can be absorbed only by the bending of the third group FPC 34.
図７（ｂ）に示すように、レンズ鏡筒２が繰出状態にあるとき、３群ＦＰＣ屈曲部３４ａにおける屈曲によって、第１湾曲部３４ｘと第２湾曲部３４ｙとの間に屈曲角度θが生じる。屈曲角度θを極力小さくすることが、３群ＦＰＣ屈曲部３４ａに繰り返して掛かる応力を小さくして、３群ＦＰＣ３４の断線を防ぐことにつながる。したがって、具体的には、屈曲角度θが９０度以下になるように、３群フレキ湾曲部３４ｗの長さＬ（図５参照）を長くする。これにより、繰り返される屈曲に対する断線防止効果を高めることができる。 As shown in FIG. 7B, when the lens barrel 2 is in the extended state, the bending angle θ is set between the first bending portion 34x and the second bending portion 34y due to the bending in the third group FPC bending portion 34a. Arise. Making the bending angle θ as small as possible reduces the stress repeatedly applied to the third group FPC bent portion 34a and prevents disconnection of the third group FPC 34. Therefore, specifically, the length L (see FIG. 5) of the third group flexible bending portion 34w is increased so that the bending angle θ is 90 degrees or less. Thereby, the disconnection prevention effect with respect to repeated bending can be enhanced.
以上の説明の通り、本実施形態に係るレンズ鏡筒２では、レンズ鏡筒２が沈胴状態にあるときと繰出状態にあるときとで、３群ＦＰＣ３４の屈曲角度を変えるよう構成している。これにより、レンズ鏡筒２が繰出状態から沈胴状態へと遷移する際に、３群ＦＰＣ３４が大きく撓むことを防止することができるため、３群ＦＰＣ３４が他の部品に干渉してレンズ鏡筒２がカメラ本体１内に収納できなくなる事態の発生を防止することができる。よって、部品点数を増加させずに、また、レンズ鏡筒２の外径を大きくすることなく、レンズ鏡筒２の内部に３群ＦＰＣ３４を確実に収納することができる。 As described above, the lens barrel 2 according to this embodiment is configured to change the bending angle of the third group FPC 34 depending on whether the lens barrel 2 is in the retracted state or in the extended state. Thereby, when the lens barrel 2 is changed from the extended state to the retracted state, it is possible to prevent the third group FPC 34 from being greatly bent, and therefore, the third group FPC 34 interferes with other parts and the lens barrel. Occurrence of a situation where 2 cannot be stored in the camera body 1 can be prevented. Therefore, the third group FPC 34 can be reliably accommodated inside the lens barrel 2 without increasing the number of parts and without increasing the outer diameter of the lens barrel 2.
＜実施形態の変形例＞
上記の実施形態では、３群ＦＰＣ３４に、第１湾曲部３４ｘと、第２湾曲部３４ｙと、３群ＦＰＣ屈曲部３４ａとを設け、３群レンズユニット３０の光軸方向での移動に対して３群ＦＰＣ３４を屈曲させる構成とした。しかし、これに限定されず、図８（ａ），（ｂ）に示す第１の変形例の構成、或いは、図９（ａ），（ｂ）に示す第２の変形例の構成に変更してもよい。
<Modification of Embodiment>
In the above embodiment, the third group FPC 34 is provided with the first curved portion 34x, the second curved portion 34y, and the third group FPC bent portion 34a, and the third group lens unit 30 is moved in the optical axis direction. The third group FPC 34 was bent. However, the present invention is not limited to this, and the configuration is changed to the configuration of the first modification shown in FIGS. 8A and 8B or the configuration of the second modification shown in FIGS. 9A and 9B. May be.
図８（ａ）は、３群レンズユニット３０の第１の変形例を示す斜視図であり、図８（ｂ）は、図８（ａ）に示される３群ＦＰＣ屈曲部３４ａ付近の拡大図である。第１の変形例では、３群ＦＰＣ３４において、第１湾曲部３４ｘと第２湾曲部３４ｙとの間を両面テープ８０等の接着部材により貼り付けている。これにより、繰り返される屈曲の際に生じる負荷が両面テープ８０の端部８０ａに掛かるようになるため、３群ＦＰＣ屈曲部３４ａに負荷を掛かり難くすることができる。 FIG. 8A is a perspective view showing a first modification of the third group lens unit 30, and FIG. 8B is an enlarged view of the vicinity of the third group FPC bent portion 34a shown in FIG. It is. In the first modification, in the third group FPC 34, the first bending portion 34x and the second bending portion 34y are pasted with an adhesive member such as a double-sided tape 80. As a result, a load generated during repeated bending is applied to the end portion 80a of the double-sided tape 80, so that it is difficult to apply a load to the third group FPC bending portion 34a.
図９（ａ）は、３群レンズユニット３０の第２の変形例を示す斜視図であり、図９（ｂ）は、図９（ａ）に示される３群ＦＰＣ屈曲部３４ａ付近の拡大図である。第２の変形例では、第１の変形例と同様に、３群ＦＰＣ３４における３群ＦＰＣ屈曲部３４ａの近傍で、第１湾曲部３４ｘと第２湾曲部３４ｙとを両面テープ８０等の接着部材により貼り付けている。また、第２の変形例では、３群ＦＰＣ３４を折り曲げた状態で３群ＦＰＣ屈曲部３４ａの近傍において３群保持部材３２に新たに設けられた３群保持部材ダボ３２ｃに嵌め込まれる穴部を第１湾曲部３４ｘと第２湾曲部３４ｙのそれぞれに形成し、これらの穴部をこの３群保持部材ダボ３２ｃに圧入して３群ＦＰＣ３４を位置決めし、保持している。これにより、３群ＦＰＣ３４を、光軸に垂直な面方向に位置をばらつかせることなく、収納することができる。 9A is a perspective view showing a second modification of the third group lens unit 30, and FIG. 9B is an enlarged view of the vicinity of the third group FPC bent portion 34a shown in FIG. 9A. It is. In the second modified example, similarly to the first modified example, the first curved portion 34x and the second curved portion 34y are bonded to the adhesive member such as the double-sided tape 80 in the vicinity of the third group FPC bent portion 34a in the third group FPC 34. Is pasted. Further, in the second modification, the third group FPC 34 is bent and a hole portion to be fitted in the third group holding member dowel 32c newly provided in the third group holding member 32 in the vicinity of the third group FPC bent portion 34a is provided. The first curved portion 34x and the second curved portion 34y are respectively formed, and these hole portions are press-fitted into the third group holding member dowel 32c to position and hold the third group FPC 34. As a result, the third group FPC 34 can be accommodated without varying the position in the plane direction perpendicular to the optical axis.
＜その他の実施形態＞
以上、本発明をその好適な実施形態に基づいて詳述してきたが、本発明はこれら特定の実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の様々な形態も本発明に含まれる。例えば，上記実施形態では、３群レンズユニット３０を構成するフレキシブルプリント基板の構成について説明したが、レンズ鏡筒２を構成する他のフレキシブルプリント基板についても、上記実施形態と同様の構成を採用してもよい。
<Other embodiments>
Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. For example, in the above embodiment, the configuration of the flexible printed circuit board constituting the third group lens unit 30 has been described, but the same structure as that of the above embodiment is adopted for other flexible printed circuit boards constituting the lens barrel 2. May be.
２ レンズ鏡筒
３０ ３群レンズユニット
３１ ３群レンズ
３２ ３群保持部材
３２ｃ ３群保持部材ダボ
３３ ３群駆動モータ
３４ ３群ＦＰＣ（フレキシブルプリント基板）
３４ａ ３群ＦＰＣ屈曲部
３４ｘ 第１湾曲部
３４ｙ 第２湾曲部
３５ ３群駆動部材
８０ 両面テープ
2 Lens barrel 30 3rd group lens unit 31 3rd group lens 32 3rd group holding member 32c 3rd group holding member dowel 33 3rd group drive motor 34 3rd group FPC (flexible printed circuit board)
34a 3rd group FPC bending part 34x 1st bending part 34y 2nd bending part 35 3rd group drive member 80 Double-sided tape
Claims (7)
前記レンズユニットは、レンズと、前記レンズを保持する保持部材と、電子部品とを有するレンズ鏡筒であって、
前記電子部品と電気的に接続されるフレキシブルプリント基板を備え、
前記フレキシブルプリント基板は、前記レンズの周囲に配置される湾曲部を有し、
前記湾曲部は、
一端が前記保持部材に保持されると共に他端が屈曲部となって前記光軸方向と略直交するように配置される第１の湾曲部と、
一端が前記屈曲部となって前記第１の湾曲部とつながると共に他端が前記レンズ鏡筒の内部において前記レンズユニット以外の部位に固定され、前記光軸方向と略直交して前記第１の湾曲部と対向するように配置される第２の湾曲部と、を有し、
前記屈曲部の近傍に前記光軸方向と略直交するように配置される第１の湾曲部と前記光軸方向と略直交するように配置される第２の湾曲部とを接着する接着部材が設けられ、
前記レンズユニットが前記光軸周りに回転することなく前記光軸方向において並進移動する際に、前記レンズユニット以外の前記部位に対する前記レンズユニットの並進移動量が前記屈曲部の屈曲角度が変わることによって吸収されることを特徴とするレンズ鏡筒。 It has a lens unit that can move in the optical axis direction,
The lens unit includes a lens, a holding member for holding the lens, a lens barrel and a electronic components,
A flexible printed circuit board electrically connected to the electronic component;
The flexible printed circuit board has a curved portion arranged around the lens,
The curved portion is
A first curved portion, one end of which is held by the holding member and the other end of which is a bent portion, and is arranged so as to be substantially orthogonal to the optical axis direction;
One end serves as the bent portion and is connected to the first curved portion, and the other end is fixed to a portion other than the lens unit inside the lens barrel, and substantially perpendicular to the optical axis direction. A second bending portion arranged to face the bending portion,
An adhesive member for adhering a first curved portion disposed so as to be substantially orthogonal to the optical axis direction and a second curved portion disposed so as to be substantially orthogonal to the optical axis direction in the vicinity of the bent portion. Provided,
When the lens unit translates in the optical axis direction without rotating around the optical axis, the translational movement amount of the lens unit with respect to the portion other than the lens unit changes the bending angle of the bending portion. A lens barrel that is absorbed.
前記配線補強部の分離領域に前記屈曲部が設けられていることを特徴とする請求項１記載のレンズ鏡筒。 The curved portion of the flexible printed circuit board has a wiring reinforcing portion provided separately at a constant interval,
The lens barrel according to claim 1, wherein the bent portion is provided in a separation region of the wiring reinforcing portion.
前記保持部材は、前記光軸方向に突出する突起部を備え、
前記第１の湾曲部と前記第２の湾曲部は、前記第１の湾曲部と前記第２の湾曲部のそれぞれに設けられた前記穴部が前記突起部に圧入されることにより、前記保持部材に保持されていることを特徴とする請求項１乃至３のいずれか１項に記載のレンズ鏡筒。 Each of the first curved portion and the second curved portion is provided with a hole that penetrates in the optical axis direction in the vicinity of the bent portion,
The holding member includes a protrusion protruding in the optical axis direction,
The first bending portion and the second bending portion are retained by the press-fitting of the hole provided in each of the first bending portion and the second bending portion into the protrusion. The lens barrel according to any one of claims 1 to 3, wherein the lens barrel is held by a member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012144342A JP6016476B2 (en) | 2012-06-27 | 2012-06-27 | Lens barrel and imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012144342A JP6016476B2 (en) | 2012-06-27 | 2012-06-27 | Lens barrel and imaging device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014010163A JP2014010163A (en) | 2014-01-20 |
| JP2014010163A5 JP2014010163A5 (en) | 2015-06-18 |
| JP6016476B2 true JP6016476B2 (en) | 2016-10-26 |
Family
ID=50106959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012144342A Expired - Fee Related JP6016476B2 (en) | 2012-06-27 | 2012-06-27 | Lens barrel and imaging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6016476B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105847638B (en) * | 2015-06-09 | 2019-06-07 | 维沃移动通信有限公司 | A kind of filming apparatus and the electronic equipment with it |
| JP7467225B2 (en) | 2020-05-12 | 2024-04-15 | キヤノン株式会社 | Optical instruments and imaging devices |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63259525A (en) * | 1987-04-16 | 1988-10-26 | Canon Inc | Lens barrel |
| JPH0418831U (en) * | 1990-06-04 | 1992-02-17 | ||
| JP3050927B2 (en) * | 1991-01-23 | 2000-06-12 | キヤノン株式会社 | Lens barrel |
| JP3380104B2 (en) * | 1996-03-14 | 2003-02-24 | ペンタックス株式会社 | FPC board guide device for lens barrel and its FPC board |
| JPH11258480A (en) * | 1998-03-16 | 1999-09-24 | Canon Inc | Lens mirror barrel |
| JP2001021789A (en) * | 1999-07-13 | 2001-01-26 | Canon Inc | Mounting structure for flexible printed circuit board |
| JP2006184544A (en) * | 2004-12-27 | 2006-07-13 | Sony Corp | Lens device and imaging device provided with the same |
| JP4827552B2 (en) * | 2006-02-17 | 2011-11-30 | キヤノン株式会社 | Lens barrel having flexible printed circuit board |
| JP4931450B2 (en) * | 2006-03-23 | 2012-05-16 | 日本電産コパル株式会社 | Camera lens barrel |
-
2012
- 2012-06-27 JP JP2012144342A patent/JP6016476B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014010163A (en) | 2014-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4948318B2 (en) | Lens barrel and imaging device | |
| JP5463651B2 (en) | Camera, camera accessories | |
| JPWO2007010813A1 (en) | Lens barrel and imaging device including the lens barrel | |
| JP4122519B2 (en) | Lens barrel and imaging device | |
| JP2011028093A (en) | Lens device and photographing apparatus | |
| JP2011154297A (en) | Imaging device | |
| JP6016476B2 (en) | Lens barrel and imaging device | |
| JP2011150136A (en) | Blur correction device | |
| WO2007010814A1 (en) | Lens barrel and imaging device | |
| JP2019191405A (en) | Imaging device | |
| JP7237658B2 (en) | Lens barrel and imaging device | |
| JP2011158725A (en) | Lens barrel and optical device | |
| US20140233117A1 (en) | Lens assembly, lens barrel and image capturing apparatus | |
| JP6645689B2 (en) | Optical equipment | |
| US7050243B2 (en) | Lens apparatus, camera system, and camera | |
| JP5169010B2 (en) | Camera system, camera, attachment | |
| JP6429506B2 (en) | Lens barrel and imaging device | |
| JP7187355B2 (en) | Lens barrel and imaging device | |
| JP6448186B2 (en) | Lens barrel and optical apparatus equipped with the same | |
| JP6349670B2 (en) | Lens barrel and imaging device | |
| JP6238518B2 (en) | Lens barrel and optical apparatus equipped with the same | |
| JP2008225430A (en) | Lens barrel unit | |
| JP6022367B2 (en) | Photography lens, imaging device, and optical element | |
| JP6478533B2 (en) | Optical equipment | |
| JP5136494B2 (en) | Imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150424 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20150424 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20151218 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20160105 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20160304 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20160830 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20160927 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 6016476 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
| LAPS | Cancellation because of no payment of annual fees |