JP2006065014A - Lens barrel and imaging apparatus - Google Patents

Lens barrel and imaging apparatus Download PDF

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JP2006065014A
JP2006065014A JP2004247818A JP2004247818A JP2006065014A JP 2006065014 A JP2006065014 A JP 2006065014A JP 2004247818 A JP2004247818 A JP 2004247818A JP 2004247818 A JP2004247818 A JP 2004247818A JP 2006065014 A JP2006065014 A JP 2006065014A
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lens
cylindrical wall
wall portion
holding frame
lens holding
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JP4671097B2 (en
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Kentaro Tashimo
堅太郎 田下
Masanori Hayashi
正憲 林
Tomohito Yasui
智仁 安井
Hideki Yamaoka
英樹 山岡
Koichi Ito
好一 伊藤
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Sony Corp
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Sony Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To realize miniaturization by reducing the occupied space of a lens holding frame holding a doublet. <P>SOLUTION: The doublet 16A is constituted by bonding the mutually facing surfaces of a concave lens 1650 and a convex lens 1660 whose outside diameter is smaller than that of the concave lens 1650 so that their optical axes may be aligned. The inner peripheral part of the cylindrical wall part 1630 of the 2nd lens holding frame 1602 is formed of an inner peripheral surface 1630A whose inside diameter is larger than the outside diameter of the cylindrical surface 1666 of the convex lens 1660. An edge surface 1634 is annularly formed at the edge part of the cylindrical wall part 1630. A plurality of adhesive filling notches 1632 are formed to pierce in the radial direction of the cylindrical wall part 1630 at spots set at equal intervals in the periphery direction of the cylindrical wall part 1630, and each of the adhesive filling notches 1632 is opened to the edge surface 1634. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明はレンズ鏡筒および撮像装置に関する。   The present invention relates to a lens barrel and an imaging device.

デジタルスチルカメラやデジタルビデオカメラ等の撮像装置に組み込まれたレンズ鏡筒として、凹レンズと凸レンズが接合された接合レンズを有するものが提供されており、このようなレンズ鏡筒は、接合レンズを保持するレンズ保持枠を有している（例えば特許文献１参照）。
レンズ保持枠は、接合レンズの外周面の軸方向と周方向の全域にわたって延在する筒状壁部と、この筒状壁部が接合レンズの外周面に臨む複数箇所に設けられた凹部とを備えている。
接合レンズのレンズ保持枠への固定は、接合レンズを筒状壁部に収容した状態で前記凹部に接着剤を充填して硬化させることで接合レンズと筒状壁部を接着することによって行われている。 As a lens barrel incorporated in an imaging apparatus such as a digital still camera or a digital video camera, a lens barrel having a cemented lens in which a concave lens and a convex lens are cemented is provided. Such a lens barrel holds a cemented lens. A lens holding frame (see, for example, Patent Document 1).
The lens holding frame includes a cylindrical wall portion extending over the entire area in the axial direction and the circumferential direction of the outer peripheral surface of the cemented lens, and concave portions provided at a plurality of locations where the cylindrical wall portion faces the outer peripheral surface of the cemented lens. I have.
Fixing the cemented lens to the lens holding frame is performed by adhering the cemented lens and the cylindrical wall portion by filling the concave portion with an adhesive while the cemented lens is accommodated in the cylindrical wall portion. ing.

特開２００４−１７０７７２号公報JP 2004-170772 A

このようなレンズ鏡筒においては、レンズ保持枠の筒状壁部が接合レンズの外周面の軸方向と周方向の全域にわたって延在することから筒状壁部が前記軸方向と周方向に沿って多くのスペースを占有してしまい、レンズ保持枠の外形を小型化するには限界があり、レンズ鏡筒や撮像装置の小型化を図る上で不利があった。
本発明はこのような事情に鑑みなされたもので、その目的は接合レンズを保持するレンズ保持枠が占有するスペースを削減し小型化を図る上で有利なレンズ鏡筒および撮像装置を提供することにある。 In such a lens barrel, since the cylindrical wall portion of the lens holding frame extends over the entire area in the axial direction and the circumferential direction of the outer peripheral surface of the cemented lens, the cylindrical wall portion extends along the axial direction and the circumferential direction. Therefore, there is a limit to downsizing the outer shape of the lens holding frame, which is disadvantageous in reducing the size of the lens barrel and the imaging device.
The present invention has been made in view of such circumstances, and an object thereof is to provide a lens barrel and an imaging apparatus that are advantageous in reducing the space occupied by the lens holding frame for holding the cemented lens and reducing the size. It is in.

上述の目的を達成するため、本発明は、凹レンズと凸レンズがそれらの光軸を合致させた状態でそれらの面が合わされて接合された接合レンズを保持するレンズ保持枠を有するレンズ鏡筒であって、前記凸レンズの外周面は前記凹レンズの外径よりも小さい直径の円筒面で形成され、前記凹レンズは、前記凸レンズの半径方向の外側に位置して前記凸レンズの外周部に臨む環状の端面を有し、前記レンズ保持枠に、前記円筒面の外径よりも大きい内周面を有する筒状壁部が突出形成され、前記筒状壁部の周方向に間隔をおいた複数箇所に、前記筒状壁部の外周面に連通され前記筒状壁部の先端面に開放状の接着剤充填用切り欠きが設けられ、前記接合レンズは、前記凸レンズが前記筒状壁部に挿入され、前記凹レンズの環状の端面が前記筒状壁部の先端面に当接され、前記接着剤充填用切り欠きに充填された接着剤により前記環状の端面が前記筒状壁部に取着されていることを特徴とする。
また、本発明は、被写体像を導くレンズと、このレンズによって導かれた被写体像を撮像する撮像素子とを有するレンズ鏡筒を備えた撮像装置であって、前記レンズは、凹レンズと凸レンズがそれらの光軸を合致させた状態でそれらの面が合わされて接合された接合レンズであり、前記レンズ鏡筒は、前記接合レンズを保持するレンズ保持枠を有し、前記凸レンズの外周面は前記凹レンズの外径よりも小さい直径の円筒面で形成され、前記凹レンズは、前記凸レンズの半径方向の外側に位置して前記凸レンズの外周部に臨む環状の端面を有し、前記レンズ保持枠に、前記円筒面の外径よりも大きい内周面を有する筒状壁部が突出形成され、前記筒状壁部の周方向に間隔をおいた複数箇所に、前記筒状壁部の外周面に連通され前記筒状壁部の先端面に開放状の接着剤充填用切り欠きが設けられ、前記接合レンズは、前記凸レンズが前記筒状壁部に挿入され、前記凹レンズの環状の端面が前記筒状壁部の先端面に当接され、前記接着剤充填用切り欠きに充填された接着剤により前記環状の端面が前記筒状壁部に取着されていることを特徴とする。 In order to achieve the above-mentioned object, the present invention is a lens barrel having a lens holding frame for holding a cemented lens in which the concave lens and the convex lens are joined with their optical surfaces aligned with each other. The outer peripheral surface of the convex lens is formed of a cylindrical surface having a diameter smaller than the outer diameter of the concave lens, and the concave lens has an annular end surface that faces the outer peripheral portion of the convex lens and is located on the outer side in the radial direction of the convex lens. A cylindrical wall portion having an inner peripheral surface larger than the outer diameter of the cylindrical surface is formed on the lens holding frame so as to protrude, and at a plurality of positions spaced in the circumferential direction of the cylindrical wall portion, An open adhesive filling cutout is provided at the distal end surface of the cylindrical wall portion that communicates with the outer peripheral surface of the cylindrical wall portion, and the cemented lens has the convex lens inserted into the cylindrical wall portion, The annular end surface of the concave lens is cylindrical Is abutted against the distal end surface of the part, and an end face of the annular by adhesive filled in away the adhesive cut filler is attached to the cylindrical wall portion.
The present invention is also an imaging apparatus including a lens barrel having a lens that guides a subject image and an imaging element that captures the subject image guided by the lens, and the lens includes a concave lens and a convex lens. The lens barrel includes a lens holding frame that holds the cemented lens, and the outer peripheral surface of the convex lens is the concave lens. The concave lens has an annular end surface that faces the outer periphery of the convex lens and is located on the outer side in the radial direction of the convex lens. A cylindrical wall portion having an inner peripheral surface larger than the outer diameter of the cylindrical surface is formed to project, and communicated with the outer peripheral surface of the cylindrical wall portion at a plurality of locations spaced in the circumferential direction of the cylindrical wall portion. The tip of the cylindrical wall An open adhesive filling notch is provided on the surface, and in the cemented lens, the convex lens is inserted into the cylindrical wall portion, and the annular end surface of the concave lens is in contact with the distal end surface of the cylindrical wall portion. The annular end face is attached to the cylindrical wall portion by the adhesive filled in the adhesive filling notch.

本発明によれば、レンズ保持枠に筒状壁部と接着剤充填用切り欠きを設け、接合レンズの凸レンズを筒状壁部に挿入し凹レンズの環状の端面を筒状壁部の先端面に当接して接着剤充填用切り欠きに充填された接着剤により環状の端面を筒状壁部に取着することで接合レンズをレンズ保持枠に固定した。
したがって、従来と異なり、接合レンズを構成する凹レンズの外周部の周方向および軸方向に沿ったスペースをレンズ保持枠の筒状壁部が占有しないので、その分のスペースにレンズ鏡筒を構成する他の部材や部品を配置することができ、レンズ鏡筒の外形寸法を縮小し、ひいては撮像装置の小型化を図る上で有利となる。 According to the present invention, the lens holding frame is provided with the cylindrical wall portion and the adhesive filling notch, the convex lens of the cemented lens is inserted into the cylindrical wall portion, and the annular end surface of the concave lens is used as the distal end surface of the cylindrical wall portion. The cemented lens was fixed to the lens holding frame by attaching the annular end surface to the cylindrical wall portion with the adhesive that was in contact and filled in the adhesive filling notch.
Therefore, unlike the conventional case, since the cylindrical wall portion of the lens holding frame does not occupy the space along the circumferential direction and the axial direction of the outer peripheral portion of the concave lens constituting the cemented lens, the lens barrel is configured in that space. Other members and parts can be arranged, which is advantageous in reducing the outer dimensions of the lens barrel and, in turn, reducing the size of the imaging device.

レンズ保持枠が占有するスペースの削減を図り小型化を図るという目的を、レンズ保持枠に筒状壁部と接着剤充填用切り欠きを設け、接合レンズの凸レンズを筒状壁部に挿入し凹レンズの環状の端面を筒状壁部の先端面に当接して接着剤充填用切り欠きに充填された接着剤により環状の端面を筒状壁部に取着することで実現した。   For the purpose of reducing the space occupied by the lens holding frame and reducing the size, the lens holding frame is provided with a cylindrical wall portion and an adhesive filling notch, and the convex lens of the cemented lens is inserted into the cylindrical wall portion to form a concave lens. The annular end face is brought into contact with the tip end face of the cylindrical wall portion, and the annular end face is attached to the cylindrical wall portion with the adhesive filled in the adhesive filling notch.

次に本発明の実施例１について図面を参照して説明する。
図１は実施例１の撮像装置を前方から見た斜視図、図２は実施例１の撮像装置を後方から見た斜視図、図３は実施例１の撮像装置の構成を示すブロック図である。
図１に示すように、本実施例の撮像装置１００はデジタルスチルカメラであり、外装を構成するケース１０２を有している。なお、本明細書において左右は、撮像装置１００を前方から見た状態でいうものとし、また、光学系の光軸方向で被写体側を前方といい、撮像素子側を後方という。
ケース１０２の前面右側部寄りの箇所には撮影光学系１０４を収容保持する沈胴式の鏡筒１０が設けられ、ケース１０２の前面上部寄りの箇所には閃光を発光するフラッシュ部１０６などが設けられている。
鏡筒１０はケース１０２の内部に組み込まれた駆動部１４６（図３）によってケース１０２の前面から前方に突出した使用位置（広角状態、望遠状態、および広角乃至望遠の中間状態）とケース１０２の前面に収容された収容位置（沈胴状態）との間を出没するように構成されている。
ケース１０２の上端面には、撮像を行うためのシャッタボタン１０８、撮影光学系１０４のズームを調整するためのズーム操作スイッチ１１０、再生モードの切り換えなどを行なうためのモード切り換えスイッチ１１２、電源のオンオフを行うための電源スイッチ１１４が設けられ、ケース１０２の後面には、撮像した映像を表示するディスプレイ１１６、撮影、記録、映像表示などの種々の動作にまつわる操作を行うための複数の操作スイッチ１１８、ディスプレイ１１６上に表示されるメニューを選択するなどの操作を行うための制御スイッチ１２０などが設けられている。
本実施例では、モード切り換えスイッチ１１２は、いわゆるスライドスイッチで構成され、ケース１０２の上端面から突出する操作部材１１２Ａを有し、この操作部材１１２Ａを指で左右方向にスライドすることでモードの切り換え動作がなされるように構成されている。
また、制御スイッチ１２０は、ケース１０２の後面から後方に突出する操作部材１２０Ａを有し、操作部材１２０Ａはその先端面を指で動かすことにより上下方向および左右方向の４方向に傾動可能に、かつ、その先端面を指でケース１０２の厚さ方向に押圧可能に構成されている。
具体的には、制御スイッチ１２０は、操作部材１２０Ａを上下方向および左右方向に動かすことで、例えばディスプレイ１１６上に表示されるカーソルの位置を上下左右に動かしたり、ディスプレイ１１６上に表示される数値などを変更（増減）させることができるように構成されている。また、制御スイッチ１２０は、操作部材１２０Ａを押圧することでディスプレイ１１６上に表示される複数の選択項目（メニュー）の決定や入力欄に表示されている数値の入力を行うことができるように構成されている。 Next, Embodiment 1 of the present invention will be described with reference to the drawings.
1 is a perspective view of the image pickup apparatus according to the first embodiment as viewed from the front, FIG. 2 is a perspective view of the image pickup apparatus according to the first embodiment as viewed from the rear, and FIG. 3 is a block diagram illustrating a configuration of the image pickup apparatus according to the first embodiment. is there.
As shown in FIG. 1, the imaging apparatus 100 of the present embodiment is a digital still camera, and has a case 102 that forms an exterior. In the present specification, left and right refer to a state in which the imaging apparatus 100 is viewed from the front, the subject side is referred to as the front in the optical axis direction of the optical system, and the imaging element side is referred to as the rear.
A retractable lens barrel 10 that houses and holds the photographing optical system 104 is provided near the front right side of the case 102, and a flash unit 106 that emits flash light is provided near the upper front of the case 102. ing.
The lens barrel 10 has a use position (wide angle state, telephoto state, and intermediate state between wide angle and telephoto) that protrudes forward from the front surface of the case 102 by the drive unit 146 (FIG. 3) incorporated in the case 102 and the case 102. It is comprised so that it may appear between the accommodation positions accommodated in the front surface (collapsed state).
On the upper end surface of the case 102, a shutter button 108 for taking an image, a zoom operation switch 110 for adjusting the zoom of the photographing optical system 104, a mode changeover switch 112 for changing a reproduction mode, and the like. A power switch 114 for performing the operation, and on the rear surface of the case 102 are a display 116 for displaying the captured image, a plurality of operation switches 118 for performing various operations such as photographing, recording, and video display, A control switch 120 for performing an operation such as selecting a menu displayed on the display 116 is provided.
In this embodiment, the mode change switch 112 is a so-called slide switch, and has an operation member 112A protruding from the upper end surface of the case 102. The mode change is performed by sliding the operation member 112A left and right with a finger. It is configured to operate.
The control switch 120 has an operation member 120A that protrudes rearward from the rear surface of the case 102, and the operation member 120A can be tilted in four directions, the vertical direction and the left-right direction, by moving the tip surface with a finger. The tip surface of the case 102 can be pressed in the thickness direction of the case 102 with a finger.
Specifically, the control switch 120 moves the operation member 120 </ b> A in the vertical direction and the horizontal direction, for example, to move the cursor position displayed on the display 116 in the vertical and horizontal directions, or to display the numerical value displayed on the display 116. Etc. can be changed (increase / decrease). Further, the control switch 120 is configured to be able to determine a plurality of selection items (menus) displayed on the display 116 and input numerical values displayed in the input column by pressing the operation member 120A. Has been.

図３に示すように、鏡筒１０の後部には、撮影光学系１０４によって結像された被写体像を撮像するＣＣＤやＣＭＯＳセンサなどで構成された撮像素子１４０が配設され、撮像装置１００は、撮像素子１４０から出力された撮像信号に基づいて画像データを生成し、メモリカードなどの記憶媒体１４１に記録する画像処理部１４２、前記画像データをディスプレイ１１６に表示させる表示処理部１４４、前記駆動部１４６、制御部１４８などを備えている。制御部１４８は、シャッタボタン１０８、ズーム操作スイッチ１１０、モード切替スイッチ１１２、電源スイッチ１１４、操作スイッチ１１８、制御スイッチ１２０の操作に応じて画像処理部１４２、表示処理部１４４、駆動部１４６を制御するものであり、制御プログラムによって動作を行うＣＰＵを有している。   As shown in FIG. 3, an imaging element 140 composed of a CCD, a CMOS sensor, or the like that images a subject image formed by the imaging optical system 104 is disposed at the rear of the lens barrel 10. The image processing unit 142 generates image data based on the imaging signal output from the imaging device 140 and records the image data in a storage medium 141 such as a memory card, the display processing unit 144 that displays the image data on the display 116, and the drive. Unit 146, control unit 148, and the like. The control unit 148 controls the image processing unit 142, the display processing unit 144, and the driving unit 146 in accordance with operations of the shutter button 108, the zoom operation switch 110, the mode switch 112, the power switch 114, the operation switch 118, and the control switch 120. It has a CPU that operates according to a control program.

次に、鏡筒１０の概略構成について説明する。
図４は鏡筒１０の状態を説明する斜視図で、（Ａ）が不使用時のレンズ収納状態すなわち沈胴状態を示し、（Ｂ）が使用時のレンズ突出状態（広角状態あるいは望遠状態）を示す。
図５は沈胴状態にある鏡筒１０の断面図、図６は広角状態にある鏡筒１０の断面図、図７は望遠状態にある鏡筒１０の断面図である。
図８は鏡筒１０を前方から見た分解斜視図、図９は図８のうち第３レンズ保持枠、ベース、フレキシブル基板を示す分解斜視図、図１０は図８のうち第１レンズ保持枠、第２レンズ保持枠、自動露光装置を示す分解斜視図、図１１は図８のうち固定環、カム環を示す分解斜視図である。
図１２は第１レンズ保持枠、第２レンズ保持枠、ベースを示す分解斜視図、図１３は図１２の組み立て図、図１４はカム環、第１レンズ保持枠、第２レンズ保持枠、ベースを示す分解斜視図、図１５は図１４の組み立て図である。
図１６は鏡筒１０を後方から見た分解斜視図、図１７は図１６のうち第３レンズ保持枠、ベース、フレキシブル基板を示す分解斜視図、図１８は図１６のうち第１レンズ保持枠、第２レンズ保持枠、自動露光装置、第３レンズ保持枠を示す分解斜視図、図１９は図１６のうち固定環、カム環、第１レンズ保持枠を示す分解斜視図である。
図２０は第１レンズ保持枠、第２レンズ保持枠、ベースを示す分解斜視図、図２１は固定環、カム環、第１レンズ保持枠、第２レンズ保持枠、第３レンズ保持枠、フレキシブル基板の組み立て図である。
図２２は第３レンズ保持枠、ベースの分解斜視図、図２３は図２２の組み立て図、図２４は図２３のＡ矢視図、図２５は図２４のＸＸ線断面図である。
図２６は第１レンズ保持枠、第２レンズ保持枠、ベースが組み立てられた状態で光軸と平行な面で破断した状態を示す斜視図、図２７はレンズ鏡筒を光軸と平行な面で破断した断面図、図２８はレンズ鏡筒を光軸と平行な面で破断した断面図、図２９は図２８のＹＹ線断面図である。
なお、本明細書の図面においては、レンズの表面あるいは各部材の表面、各部品の表面に複数の直線が描かれている箇所が存在しているが、これは作図上表示されているものであり、これら複数の直線が描かれた箇所は、実際には円筒面あるいは曲面あるいは球面をなしている箇所である。 Next, a schematic configuration of the lens barrel 10 will be described.
4A and 4B are perspective views for explaining the state of the lens barrel 10, in which FIG. 4A shows a lens retracted state, that is, a retracted state when not in use, and FIG. Show.
5 is a sectional view of the lens barrel 10 in the retracted state, FIG. 6 is a sectional view of the lens barrel 10 in the wide-angle state, and FIG. 7 is a sectional view of the lens barrel 10 in the telephoto state.
8 is an exploded perspective view of the lens barrel 10 as viewed from the front, FIG. 9 is an exploded perspective view showing the third lens holding frame, base, and flexible substrate in FIG. 8, and FIG. 10 is the first lens holding frame in FIG. FIG. 11 is an exploded perspective view showing a second lens holding frame and an automatic exposure apparatus, and FIG. 11 is an exploded perspective view showing a fixed ring and a cam ring in FIG.
12 is an exploded perspective view showing the first lens holding frame, the second lens holding frame, and the base, FIG. 13 is an assembly view of FIG. 12, and FIG. 14 is a cam ring, the first lens holding frame, the second lens holding frame, and the base. FIG. 15 is an assembly view of FIG. 14.
16 is an exploded perspective view of the lens barrel 10 as viewed from the rear, FIG. 17 is an exploded perspective view showing the third lens holding frame, base, and flexible substrate in FIG. 16, and FIG. 18 is the first lens holding frame in FIG. FIG. 19 is an exploded perspective view showing the second lens holding frame, the automatic exposure apparatus, and the third lens holding frame. FIG. 19 is an exploded perspective view showing the fixed ring, the cam ring, and the first lens holding frame in FIG.
20 is an exploded perspective view showing the first lens holding frame, the second lens holding frame, and the base. FIG. 21 is a stationary ring, a cam ring, a first lens holding frame, a second lens holding frame, a third lens holding frame, and a flexible ring. It is an assembly drawing of a board | substrate.
22 is an exploded perspective view of the third lens holding frame and base, FIG. 23 is an assembly view of FIG. 22, FIG. 24 is a view taken in the direction of arrow A in FIG. 23, and FIG.
FIG. 26 is a perspective view showing a state in which the first lens holding frame, the second lens holding frame, and the base are assembled and is broken along a plane parallel to the optical axis, and FIG. 27 is a plane parallel to the optical axis of the lens barrel. 28 is a sectional view taken along the line YY, FIG. 28 is a sectional view taken along a plane parallel to the optical axis, and FIG. 29 is a sectional view taken along line YY in FIG.
In the drawings of the present specification, there are portions where a plurality of straight lines are drawn on the surface of the lens, the surface of each member, or the surface of each component, but this is displayed on the drawing. There are portions where the plurality of straight lines are drawn, which are actually cylindrical surfaces, curved surfaces, or spherical surfaces.

図５〜図７に示すように、鏡筒１０に収容された撮影光学系１０４は光学的には３群構成である。すなわち、鏡筒１０（撮影光学系１０４）の光軸方向で被写体側を前方とし、前記光軸方向で撮像素子１１６側を後方としたとき、撮影光学系を構成する３群は、前方から後方に向かってこの順番で配設された１群レンズ１４、２群レンズ１６、３群レンズ１８によって構成されている。
鏡筒１０は、１群レンズ１４と２群レンズ１６が所定のカムカーブにより前記光軸方向に駆動されることによってズーミングを行い、３群レンズ１８が前記光軸方向に微小に変位されることによってフォーカッシングを行う。すなわち、１群レンズ１４と２群レンズ１６の変位によって焦点距離を可変し、この焦点距離の変化によって生じた合焦位置のずれを３群の変位によって修正し適切に合焦させるように構成されている。 As shown in FIGS. 5 to 7, the photographing optical system 104 housed in the lens barrel 10 has a three-group configuration optically. That is, when the subject side is the front in the optical axis direction of the lens barrel 10 (the photographing optical system 104) and the imaging element 116 side is the rear in the optical axis direction, the three groups constituting the photographing optical system are from the front to the rear. The first group lens 14, the second group lens 16, and the third group lens 18 are arranged in this order toward the head.
The lens barrel 10 is zoomed by the first group lens 14 and the second group lens 16 being driven in the optical axis direction by a predetermined cam curve, and the third group lens 18 is slightly displaced in the optical axis direction. Perform focusing. That is, the focal length is changed by the displacement of the first group lens 14 and the second group lens 16, and the deviation of the in-focus position caused by the change of the focal length is corrected by the displacement of the third group, and is appropriately focused. ing.

図８、図１６に示すように鏡筒１０は、ケース１０２に固定されるベース１２と、第３レンズ保持枠１８を保持する第３レンズ保持枠１８０２と、電装部１９と、２群レンズ１６を保持する第２レンズ保持枠１６０２と、１群レンズ１４を保持する第１レンズ保持枠１４０２と、カム環２０と、固定環２２とを有している。   As shown in FIGS. 8 and 16, the lens barrel 10 includes a base 12 fixed to the case 102, a third lens holding frame 1802 that holds the third lens holding frame 18, an electrical component 19, and a second group lens 16. The second lens holding frame 1602 that holds the first lens, the first lens holding frame 1402 that holds the first group lens 14, the cam ring 20, and the fixed ring 22.

図９、図１７、図２５に示すように、ベース１２は、板状のベース本体１２０２と、ベース本体１２０２に連結されたギア収容部１２５０とを有し、本実施例ではベース１２は合成樹脂製である。
ベース本体１２０２の中央には開口１２０４が貫通形成され、ベース本体１２０２が後方に臨む後面１２１２には、開口１２０４の周囲を囲むように凹部１２０６が設けられ、撮像素子１４０はその撮像面が開口１２０４に臨むように凹部１２０６に接着などによって取着されている。
図１２、図２９に示すように、ベース本体１２０２が前方に臨む前面１２１４には、撮影光学系１０４の光軸を中心とする円筒状に沿って円筒壁１２０８が立設されている。
円筒壁１２０８の外周には周方向に間隔をおいて４つの係合片１２１０が半径方向外方に突設されており、これら係合片１２１０がカム環２０の内周に周方向にわたって延在形成された係合溝２００２に係合することで、カム環２０はベース１２に対してカム環２０の周方向に回転可能にかつカム環２０の軸方向に移動不能に支持される。なお、図１９に示すように、カム環２０にはカム環２０の端部に開放され係合溝２００２に接続された開放溝２００３が形成されており、係合片１２１０の係合溝２００２への係合は、開放溝２００３から係合片１２１０を係合溝２００２に挿入することでなされる。 As shown in FIGS. 9, 17 and 25, the base 12 has a plate-like base main body 1202 and a gear accommodating portion 1250 connected to the base main body 1202. In this embodiment, the base 12 is a synthetic resin. It is made.
An opening 1204 is formed through the center of the base body 1202, and a recess 1206 is provided on the rear surface 1212 facing the rear of the base body 1202 so as to surround the periphery of the opening 1204. It is attached to the concave portion 1206 by adhesion or the like so as to face.
As shown in FIGS. 12 and 29, a cylindrical wall 1208 is erected along a cylindrical shape centering on the optical axis of the photographing optical system 104 on the front surface 1214 facing the base body 1202 forward.
Four engaging pieces 1210 project radially outward from the outer periphery of the cylindrical wall 1208 at intervals in the circumferential direction, and these engaging pieces 1210 extend in the circumferential direction on the inner circumference of the cam ring 20. By engaging with the formed engagement groove 2002, the cam ring 20 is supported so as to be rotatable in the circumferential direction of the cam ring 20 and immovable in the axial direction of the cam ring 20 with respect to the base 12. As shown in FIG. 19, the cam ring 20 is formed with an open groove 2003 that is opened at the end of the cam ring 20 and connected to the engagement groove 2002, and is connected to the engagement groove 2002 of the engagement piece 1210. Is engaged by inserting the engagement piece 1210 into the engagement groove 2002 from the open groove 2003.

図２３に示すように、ベース本体１２０２の前面１２１４の円筒壁１２０８の内側箇所には、第３レンズ保持枠１８０２を前記光軸方向に案内するための２本のガイド軸１２１６，１２１８が開口１２０４を挟むように設けられ、これらガイド軸１２１６，１２１８は撮影光学系１０４の光軸と平行して延在している。
一方のガイド軸１２１６は、後端が前面１２１４に固定されている。
他方のガイド軸１２１８は、後端が前面１２１４に固定され、前端が支持部１２２０により支持されている。
支持部１２２０は、前面１２１４から立設された第１、第２支持壁１２２０Ａ、１２２０Ｂとその前端を連結する第１連結壁１２２０Ｃとで構成され、ガイド軸１２１８の前端は第１連結壁１２２０Ｃに固定されている。 As shown in FIG. 23, two guide shafts 1216 and 1218 for guiding the third lens holding frame 1802 in the direction of the optical axis are opened 1204 at a portion inside the cylindrical wall 1208 of the front surface 1214 of the base body 1202. The guide shafts 1216 and 1218 extend in parallel with the optical axis of the photographic optical system 104.
One guide shaft 1216 has a rear end fixed to the front surface 1214.
The other guide shaft 1218 has a rear end fixed to the front surface 1214 and a front end supported by a support portion 1220.
The support portion 1220 includes first and second support walls 1220A and 1220B that are erected from the front surface 1214 and a first connection wall 1220C that connects the front ends thereof, and the front end of the guide shaft 1218 is connected to the first connection wall 1220C. It is fixed.

図２２、図２３、図２４、図２５に示すように、ベース本体１２０２の前面１２１４には、支持部１２２０に隣接してマグネット取付部１２２２が設けられている。
図２２に示すように、マグネット取付部１２２２は、前記第１支持壁１２２０Ａと、第１支持壁１２２０Ａに対して第２支持壁１２２０Ｂとは反対方向で前記光軸の回り方向に間隔をおいて前面１２１４から立設された第３支持壁１２２２Ａと、第１連結壁１２２０Ｂと接続され第１支持壁１２２０Ａと第３支持壁１２２２Ａの先端を連結する第２連結壁１２２２Ｂと、第１、第３支持壁１２２０Ａ、１２２２Ａの間の前面１２１４箇所とによって長手方向を前記光軸方向に合せた矩形枠状に形成されている。
マグネット取付部１２２２の内側には、帯板状の駆動用マグネット４００２と、この駆動用マグネット４００２よりも輪郭が一回り大きく駆動用マグネット４００２の厚さ方向の一方の面に取着された帯板状のバックヨーク４００４とがそれらの延在方向を前記光軸方向と合わせて挿入され取着される。
駆動用マグネット４００２は、Ｎ極とＳ極の一方に着磁された第１領域とＮ極とＳ極の他方に着磁された第２領域が駆動用マグネット４００２の長手方向に沿って交互に並べて配置され、駆動用マグネット４００２が前記光軸に臨むように、かつ、駆動用マグネット４００２の前記第１、第２領域が前記光軸を中心とする円周の接線と平行するように配置される。 As shown in FIGS. 22, 23, 24, and 25, the front surface 1214 of the base main body 1202 is provided with a magnet attachment portion 1222 adjacent to the support portion 1220.
As shown in FIG. 22, the magnet mounting portion 1222 is spaced apart in the direction around the optical axis in the direction opposite to the second support wall 1220B with respect to the first support wall 1220A and the first support wall 1220A. A third support wall 1222A erected from the front surface 1214, a second connection wall 1222B connected to the first connection wall 1220B and connecting the tips of the first support wall 1220A and the third support wall 1222A, and the first and third The front wall 1214 between the support walls 1220A and 1222A is formed in a rectangular frame shape whose longitudinal direction is aligned with the optical axis direction.
On the inner side of the magnet mounting portion 1222, a strip-shaped drive magnet 4002 and a strip plate that is slightly larger in outline than the drive magnet 4002 and attached to one surface in the thickness direction of the drive magnet 4002. A back yoke 4004 is inserted and attached with its extending direction aligned with the optical axis direction.
The driving magnet 4002 has a first region magnetized on one of the N and S poles and a second region magnetized on the other of the N and S poles along the longitudinal direction of the driving magnet 4002 alternately. Arranged side by side so that the drive magnet 4002 faces the optical axis, and the first and second regions of the drive magnet 4002 are parallel to the tangent of the circumference around the optical axis. The

図９に示すように、ベース本体１２０２の前面１２１４には、円筒壁１２０８の周方向に等間隔をおいて（後述する第２レンズ保持枠１６０２の周方向に等間隔をおいて）３つのガイド柱５０が前記光軸と平行をなすように突設され、言い換えると、３つのガイド柱５０は、後述するカム環２０の周方向に等間隔をおいて突設され、後述する第２レンズ保持枠１６０２の内周面１６２０（図３３参照）に臨んでいる。
本実施例では、ガイド柱５０は合成樹脂製でベース１２と一体成型されている。
図２７に示すように、ガイド柱５０は、その断面が、ウェブ５００２と、このウェブ５００２の両端のフランジ５００４からなるI字状を呈している。
ガイド柱５０は、前記断面を構成するウェブ５００２の延在方向が、ガイド柱５０の半径方向外方に位置する円筒壁１２０８箇所を通る接線方向に平行するように配置されている。言い換えると、ガイド柱５０は、後述する第２レンズ保持枠１６０２箇所を通る接線に平行するように配置されている。 As shown in FIG. 9, on the front surface 1214 of the base body 1202, three guides are equally spaced in the circumferential direction of the cylindrical wall 1208 (equally spaced in the circumferential direction of the second lens holding frame 1602 described later). The pillars 50 are provided so as to be parallel to the optical axis. In other words, the three guide pillars 50 are provided at equal intervals in the circumferential direction of the cam ring 20 to be described later, and a second lens holding member to be described later is held. It faces the inner peripheral surface 1620 (see FIG. 33) of the frame 1602.
In this embodiment, the guide column 50 is made of synthetic resin and is integrally formed with the base 12.
As shown in FIG. 27, the guide column 50 has an I-shaped cross section including a web 5002 and flanges 5004 at both ends of the web 5002.
The guide column 50 is arranged so that the extending direction of the web 5002 constituting the cross section is parallel to a tangential direction passing through 1208 cylindrical walls located radially outward of the guide column 50. In other words, the guide pillar 50 is disposed so as to be parallel to a tangent line passing through a second lens holding frame 1602 described later.

図８に示すように、ギア収容部１２５０は、前方に開放された開口１２５０Ａと前記光軸側に臨む側方に開放された開口１２５０Ｂとを有し、ギア列からなる減速機構１２５２を収容している。この減速機構１２５２は、前記駆動部１４６を構成するモータ１２５４の駆動軸が回転された際に、その回転駆動力を減速しカム環２０に伝達しカム環２０を回転させるものである。
モータ１２５４はギア収容部１２５０に取着され、減速機構１２５２を構成する上流端のギアはモータ１２５４の駆動ギア１２５６に噛合し、減速機構１２５２を構成する下流端のギアは開口１２５０Ｂを介してカム環２０の外周に設けられたギア部２００４に噛合している。 As shown in FIG. 8, the gear accommodating portion 1250 has an opening 1250A opened forward and an opening 1250B opened laterally facing the optical axis side, and accommodates a speed reduction mechanism 1252 formed of a gear train. ing. When the drive shaft of the motor 1254 constituting the drive unit 146 is rotated, the speed reduction mechanism 1252 decelerates the rotational driving force and transmits it to the cam ring 20 to rotate the cam ring 20.
The motor 1254 is attached to the gear housing 1250, the upstream end gear constituting the speed reduction mechanism 1252 meshes with the drive gear 1256 of the motor 1254, and the downstream end gear constituting the speed reduction mechanism 1252 is cammed through the opening 1250B. It meshes with a gear portion 2004 provided on the outer periphery of the ring 20.

図９に示すように、ベース１２の後面１２１２にはメインフレキシブル基板６０が取着されている。
メインフレキシブル基板６０には、第３レンズ保持枠１８０２の位置検出用のホール素子７００２などが実装され、また、メインフレキシブル基板６０にはモータ１２５４の端子部に電気的に接続される接続部が設けられている。
ホール素子７００２からの検出信号はメインフレキシブル基板６０を介して制御部１４８に供給され、制御部１４８からの駆動信号はメインフレキシブル基板６０を介してモータ１２５４に供給される。
図１７に示すように、ホール素子７００２はべース１２の後面１２１２に設けられた取り付け凹部１２４０に収容されて配設される。
撮像素子１４０は不図示のフレキシブル基板に実装され、撮像素子１４０からの撮像信号はこの不図示のフレキシブル基板を介して画像処理部１４２に供給される。 As shown in FIG. 9, the main flexible board 60 is attached to the rear surface 1212 of the base 12.
The main flexible board 60 is mounted with a Hall element 7002 for detecting the position of the third lens holding frame 1802 and the like, and the main flexible board 60 is provided with a connection portion that is electrically connected to a terminal portion of the motor 1254. It has been.
A detection signal from the Hall element 7002 is supplied to the control unit 148 through the main flexible board 60, and a drive signal from the control unit 148 is supplied to the motor 1254 through the main flexible board 60.
As shown in FIG. 17, the Hall element 7002 is accommodated and disposed in a mounting recess 1240 provided on the rear surface 1212 of the base 12.
The image sensor 140 is mounted on a flexible board (not shown), and an image signal from the image sensor 140 is supplied to the image processing unit 142 via the flexible board (not shown).

図２２、図２７に示すように、第３レンズ保持枠１８０２は３群レンズ１８を保持する枠本体１８０４を有している。
枠本体１８０４の前記光軸を挟む２箇所に軸受け１８０６、１８０８が設けられ、これら軸受け１８０６，１８０８に前記ガイド軸１２１６，１２１８が挿通されることで第３レンズ保持枠１８０２は前記光軸方向に移動可能にかつ光軸回り方向に回転不能に支持されている。
枠本体１８０４が前記マグネット４００２に臨む箇所にはマグネット４００２が第３レンズ保持枠１８０２に臨む面と直交する軸線回り（前記光軸と直交する軸線回り）に巻回されたコイル４００６（電装部）が接着剤などによって固定されている。コイル４００６はコイル用フレキシブル基板４００８（電装部用フレキシブル基板に）を介して前記メインフレキシブル基板６０に電気的に接続され、制御部１４８からの駆動信号がメインフレキシブル基板６０、４００８を介してコイル４００６に供給される。具体的には、図２２に示すように、コイル用フレキシブル基板４００８の先端部４０１０はコイル４００６に接続され基端部４０１２はメインフレキシブル基板６０に接続される。
本実施例では、マグネット４００２、バックヨーク４００４、コイル４００６によってリニアモータ４０が構成されており、コイル４００６に制御部１４８から駆動電流が供給されることによりコイル４００６から発生された磁界と、マグネット４００２の前記第１、第２領域の磁界との磁気相互作用により第３レンズ保持枠１８０２が前記光軸方向の前方あるいは後方に移動させる駆動力が発生するように構成されている。
図９、図２２に示すように、枠本体１８０４が前記ホール素子７００２に臨む箇所には、マグネット７００４がバックヨーク７００６を介して接着などにより取着されている。
本実施例では、ホール素子７００２によってマグネット７００４の磁力の強さ（磁束密度）が検出され、ホール素子７００２によって生成された検出信号が制御部１４８に供給されることによって制御部１４８で第３レンズ保持枠１８０２の前記光軸方向の位置が検出されるように構成されており、これらホール素子７００２、マグネット７００４、制御部１４８によって位置検出機構７０が構成されている。 As shown in FIGS. 22 and 27, the third lens holding frame 1802 has a frame body 1804 that holds the third group lens 18.
Bearings 1806 and 1808 are provided at two positions on the frame main body 1804 with the optical axis in between, and the guide shafts 1216 and 1218 are inserted into the bearings 1806 and 1808 so that the third lens holding frame 1802 is arranged in the optical axis direction. It is supported so that it can move and cannot rotate around the optical axis.
A coil 4006 (electrical component) wound around an axis orthogonal to the surface of the magnet 4002 facing the third lens holding frame 1802 (around the axis orthogonal to the optical axis) at a position where the frame main body 1804 faces the magnet 4002. Is fixed by an adhesive or the like. The coil 4006 is electrically connected to the main flexible substrate 60 via a coil flexible substrate 4008 (to the electrical component flexible substrate), and a drive signal from the control unit 148 is transmitted to the coil 4006 via the main flexible substrates 60 and 4008. To be supplied. Specifically, as shown in FIG. 22, the distal end portion 4010 of the coil flexible substrate 4008 is connected to the coil 4006 and the proximal end portion 4012 is connected to the main flexible substrate 60.
In this embodiment, the linear motor 40 is configured by the magnet 4002, the back yoke 4004, and the coil 4006, and a magnetic field generated from the coil 4006 by supplying a drive current from the control unit 148 to the coil 4006, and the magnet 4002. The third lens holding frame 1802 is configured to generate a driving force for moving the third lens holding frame 1802 forward or backward in the optical axis direction by magnetic interaction with the magnetic fields of the first and second regions.
As shown in FIGS. 9 and 22, a magnet 7004 is attached to a position where the frame main body 1804 faces the Hall element 7002 by adhesion or the like via a back yoke 7006.
In the present embodiment, the magnetic force (magnetic flux density) of the magnet 7004 is detected by the Hall element 7002, and the detection signal generated by the Hall element 7002 is supplied to the control unit 148, whereby the control unit 148 causes the third lens. The position of the holding frame 1802 in the optical axis direction is detected, and the position detection mechanism 70 is configured by the Hall element 7002, the magnet 7004, and the control unit 148.

図１０、図１８に示すように、第２レンズ保持枠１６０２は２群レンズ１６を保持する環板部１６０６と、環板部１６０６の外周部で周方向に等間隔をおいた３箇所からそれぞれ軸方向に延在するガイド部１６０８とを備えている。
ガイド部１６０８が環板部１６０６の半径方向内側に面した箇所（第２レンズ保持枠１６０２の内周部）にはガイド溝１６０４が形成されている。
図２７に示すように、ガイド溝１６０４は、互いに対向する側面１６０４Ａとそれら側面１６０４Ａの奥部を接続する底面１６０４Ｂとで第２レンズ保持枠１６０２の半径方向内側に開放状に形成され、ガイド溝１６０４は前記光軸と平行をなして延在している。
各ガイド溝１６０４にはそれぞれガイド柱５０が係合され、これにより第２レンズ保持枠１６０２は３つのガイド柱５０により回転不能かつ軸方向（前記光軸方向）に移動可能に支持されている。
より詳細には、ガイド柱５０を構成する両端のフランジ５００４の外面５００４Ａが第２レンズ保持枠１６０２のガイド溝１６０４の側面１６０４Ａに係合することで第２レンズ保持枠１６０２の周方向への動きが阻止され、両端のフランジ５００４の端面５００４Ｂがガイド溝１６０４の底面１６０４Ｂに係合することで第２レンズ保持枠１６０２の半径方向への動きが阻止されている。
また、ガイド部１６０８の延在方向と直交する方向の両側には側面１６０８Ａが形成され、ガイド部１６０８が半径方向外方に臨む面には外面１６０８Ｂが形成されている。
ガイド溝１６０４の半径方向外側に面した第２レンズ保持枠１６０２の箇所（ガイド部１６０８の箇所）で後方寄りの箇所には第２カムピン１６１０が前記半径方向外方に突設されている。
図１８に示すように、各ガイド部１６０８の第２カムピン１６０１０は、後述する第１レンズ保持枠１４０２の外周部に形成された切り欠き１４１０を貫通して第１レンズ保持枠１４０２の外周部から突設され、図１９に示すように、カム環２０の第２カム溝２０１２に係合し、カム環２０の回転により第２カムピン１６１０が第２カム溝２０１２により案内されて第２レンズ保持枠１６０２が前記光軸方向に移動するように構成されている。 As shown in FIGS. 10 and 18, the second lens holding frame 1602 includes an annular plate portion 1606 that holds the second group lens 16 and three circumferentially spaced outer peripheral portions of the annular plate portion 1606, respectively. And a guide portion 1608 extending in the axial direction.
A guide groove 1604 is formed at a location where the guide portion 1608 faces the inner side in the radial direction of the ring plate portion 1606 (the inner peripheral portion of the second lens holding frame 1602).
As shown in FIG. 27, the guide groove 1604 is formed in an open shape radially inward of the second lens holding frame 1602 with a side surface 1604A facing each other and a bottom surface 1604B connecting the back of the side surface 1604A. 1604 extends parallel to the optical axis.
Each guide groove 1604 is engaged with a guide column 50, whereby the second lens holding frame 1602 is supported by the three guide columns 50 so as not to rotate but to move in the axial direction (the optical axis direction).
More specifically, the outer surface 5004A of the flange 5004 at both ends constituting the guide column 50 is engaged with the side surface 1604A of the guide groove 1604 of the second lens holding frame 1602, so that the second lens holding frame 1602 moves in the circumferential direction. And the end surfaces 5004B of the flanges 5004 at both ends engage with the bottom surface 1604B of the guide groove 1604, thereby preventing the second lens holding frame 1602 from moving in the radial direction.
Further, side surfaces 1608A are formed on both sides in the direction orthogonal to the extending direction of the guide portion 1608, and an outer surface 1608B is formed on the surface where the guide portion 1608 faces radially outward.
A second cam pin 1610 protrudes outward in the radial direction at a location near the rear of the location of the second lens holding frame 1602 (location of the guide portion 1608) facing the radially outer side of the guide groove 1604.
As shown in FIG. 18, the second cam pin 16010 of each guide portion 1608 passes through a notch 1410 formed in the outer peripheral portion of the first lens holding frame 1402 to be described later from the outer peripheral portion of the first lens holding frame 1402. As shown in FIG. 19, the second cam pin 1610 is guided by the second cam groove 2012 by the rotation of the cam ring 20 and is engaged with the second cam groove 2012 of the cam ring 20. 1602 is configured to move in the optical axis direction.

図１０、図１８、図３１〜図３３に示すように、電装部１９は第２レンズ保持枠１６０２の後部に設けられ、第２レンズ保持枠１６０２と一体的に前記光軸方向に移動するように構成されている。
電装部１９は、シャッタの機能と可変絞りの機能を備え、シャッタ用フレキシブル基板８０（図３２参照、電装部用フレキシブル基板）を介してメインフレキシブル基板６０に電気的に接続されている。制御部１４８からの駆動信号がメインフレキシブル基板６０、シャッタ用フレキシブル基板８０を介して電装部１９に供給される（授受される）ことで前記シャッタと可変絞りの動作が制御される。 As shown in FIGS. 10, 18, and 31 to 33, the electrical unit 19 is provided at the rear part of the second lens holding frame 1602 so as to move integrally with the second lens holding frame 1602 in the optical axis direction. It is configured.
The electrical component 19 has a shutter function and a variable aperture function, and is electrically connected to the main flexible substrate 60 via a shutter flexible substrate 80 (see FIG. 32, electrical component flexible substrate). A drive signal from the control unit 148 is supplied (received) to the electrical unit 19 via the main flexible board 60 and the shutter flexible board 80, whereby the operations of the shutter and the variable aperture are controlled.

図１０、図１８に示すように、第１レンズ保持枠１４０２は、１群レンズ１４を保持する筒体１４０４を有し、筒体１４０４が半径方向内側に面した箇所（第１レンズ保持枠１４０２の内周部）には、第２レンズ保持枠１６０２のガイド部１６０８に係合するガイド溝１４０６が軸方向に沿って延在形成されている。
図２７に示すように、ガイド溝１４０６は、互いに対向する側面１４０６Ａとそれら側面１４０６Ａの奥部を接続する底面１４０６Ｂとで第１レンズ保持枠１４０２の半径方向内側に開放状に形成されている。
第１レンズ保持枠１４０２の各ガイド溝１４０６にはそれぞれガイド部１６０８が係合され、これにより第１レンズ保持枠１４０２は３つのガイド部１６０８により回転不能かつ軸方向に移動可能に支持されている。
より詳細には、ガイド部１６０８の両側面１６０８Ａがガイド溝１４０６の両側面１４０６Ａに係合することで第１レンズ保持枠１４０２の周方向への動きが阻止され、ガイド部１６０８の外面１６０８Ｂがガイド溝１４０６の底面１４０６Ｂに係合することで第１レンズ保持枠１４０２の半径方向への動きが阻止されている。
筒体１４０４が半径方向外側に面した箇所（第１レンズ保持枠１４０２の外周部）で後方寄りの箇所には周方向に等間隔をおいて３つの第１カムピン１４１２が前記半径方向外方に突設されている。
各第１カムピン１４１２は、図１９に示すように、カム環２０の第１カム溝２０１０に係合し、カム環２０の回転により第１カムピン１４１２が第１カム溝２０１０により案内されて第１レンズ保持枠１４０２が前記光軸方向に移動するように構成されている。
また、図４（Ａ）に示す鏡筒１０の沈胴状態で、第２レンズ保持枠１６０２の第２カムピン１６１０は、図１３に示すように、第１レンズ保持枠１４０２の切り欠き１４１０内に位置し、第１レンズ保持枠１４０２の第１カムピン１４１２と、第２レンズ保持枠１６０２の第２カムピン１６１０は、前記光軸方向においてほぼ同一の箇所に位置し、かつ、周方向に間隔をおいた箇所に位置するように構成されている。 As shown in FIGS. 10 and 18, the first lens holding frame 1402 has a cylindrical body 1404 that holds the first lens group 14, and a location where the cylindrical body 1404 faces inward in the radial direction (the first lens holding frame 1402. The guide groove 1406 that engages with the guide portion 1608 of the second lens holding frame 1602 extends along the axial direction.
As shown in FIG. 27, the guide groove 1406 is formed in an open shape on the radially inner side of the first lens holding frame 1402 with a side surface 1406A facing each other and a bottom surface 1406B connecting the back of the side surface 1406A.
The guide portions 1608 are engaged with the respective guide grooves 1406 of the first lens holding frame 1402, whereby the first lens holding frame 1402 is supported by the three guide portions 1608 so as not to be rotatable and movable in the axial direction. .
More specifically, when both side surfaces 1608A of the guide portion 1608 are engaged with both side surfaces 1406A of the guide groove 1406, the movement of the first lens holding frame 1402 in the circumferential direction is prevented, and the outer surface 1608B of the guide portion 1608 is guided. By engaging the bottom surface 1406B of the groove 1406, the first lens holding frame 1402 is prevented from moving in the radial direction.
Three first cam pins 1412 are arranged radially outwardly at equal intervals in the circumferential direction at locations where the cylindrical body 1404 faces radially outward (outer peripheral portion of the first lens holding frame 1402). Projected.
As shown in FIG. 19, each first cam pin 1412 engages with the first cam groove 2010 of the cam ring 20, and the first cam pin 1412 is guided by the first cam groove 2010 by the rotation of the cam ring 20. A lens holding frame 1402 is configured to move in the optical axis direction.
Further, in the retracted state of the lens barrel 10 shown in FIG. 4A, the second cam pin 1610 of the second lens holding frame 1602 is positioned in the notch 1410 of the first lens holding frame 1402, as shown in FIG. The first cam pin 1412 of the first lens holding frame 1402 and the second cam pin 1610 of the second lens holding frame 1602 are located at substantially the same position in the optical axis direction and spaced in the circumferential direction. It is comprised so that it may be located in a location.

図１１、図１９に示すように、カム環２０は筒体２００１を有し、筒体２００１の外周面の後方寄り箇所には前記ギア部２００４が形成されている。
筒体２００１の内周面には周方向に沿って前記第１、第２カム溝２０１０，２０１２が形成され、前記内周面の後端には第１、第２カム溝２０１０，２０１２に接続された第１、第２開放溝２０１０Ａ、２０１２Ａが形成されている。
なお、第１レンズ保持枠１４０２の第１カムピン１４１２の第１カム溝２０１０への係合は、第１開放溝２０１０Ａから第１カムピン１４１２を第１カム溝２０１０に挿入することでなされる。
また、第２レンズ保持枠１６０２の第２カムピン１６１０の第２カム溝２０１２への係合は、第２開放溝２０１２Ａから第２カムピン１６１０を第２カム溝２０１２に挿入することでなされる。 As shown in FIGS. 11 and 19, the cam ring 20 has a cylindrical body 2001, and the gear portion 2004 is formed at a position near the rear of the outer peripheral surface of the cylindrical body 2001.
The first and second cam grooves 2010 and 2012 are formed along the circumferential direction on the inner peripheral surface of the cylindrical body 2001, and are connected to the first and second cam grooves 2010 and 2012 at the rear end of the inner peripheral surface. First and second open grooves 2010A and 2012A are formed.
The first lens holding frame 1402 is engaged with the first cam pin 1412 in the first cam groove 2010 by inserting the first cam pin 1412 into the first cam groove 2010 from the first opening groove 2010A.
Further, the second lens holding frame 1602 is engaged with the second cam pin 1610 in the second cam groove 2012 by inserting the second cam pin 1610 into the second cam groove 2012 from the second opening groove 2012A.

図１１、図１９に示すように、固定環２２は、筒体２２０２と、筒体２２０２の前方寄り箇所に取着された蓋部２２０４とを有している。
筒体２２０２は、ベース１２の円筒壁１２０８の外径よりも大きな寸法の内径を有し、ギア収容部１２５０の前記収容空間と連通する開口２２０３が形成されている。
ギア収容部１２５０内のギア列の下流端のギアは開口２２０３を介してカム環２０のギア部２００４に噛合している。
固定環２２は、筒体２２０２の内側に第１レンズ保持枠１４０２、第２レンズ保持枠１６０２、第３レンズ保持枠１８０２、カム環２０を収容し、かつ、蓋部２２０４でギア収容部１２５０の開口１２５０Ａを閉塞した状態で、筒体２２０２の後端部がベース１２の前面１２１４にねじなどによって取着される。 As shown in FIGS. 11 and 19, the stationary ring 22 includes a cylindrical body 2202 and a lid portion 2204 attached to a front side portion of the cylindrical body 2202.
The cylindrical body 2202 has an inner diameter that is larger than the outer diameter of the cylindrical wall 1208 of the base 12, and an opening 2203 that communicates with the housing space of the gear housing portion 1250 is formed.
The gear at the downstream end of the gear train in the gear accommodating portion 1250 is engaged with the gear portion 2004 of the cam ring 20 through the opening 2203.
The fixed ring 22 houses the first lens holding frame 1402, the second lens holding frame 1602, the third lens holding frame 1802, and the cam ring 20 inside the cylindrical body 2202, and the lid portion 2204 has a gear housing portion 1250. With the opening 1250 </ b> A closed, the rear end of the cylinder 2202 is attached to the front surface 1214 of the base 12 with a screw or the like.

次にシャッタ用フレキシブル基板８０の引き回しについて説明する。
まず、シャッタ用フレキシブル基板８０から説明する。
図３０（Ａ）、（Ｂ）はシャッタ用フレキシブル基板８０の斜視図である。
図３１は沈胴状態におけるシャッタ用フレキシブル基板８０の状態を示す鏡筒の断面図、図３２は広角状態におけるシャッタ用フレキシブル基板８０の状態を示す鏡筒の断面図、図３３は望遠状態におけるシャッタ用フレキシブル基板８０の状態を示す鏡筒の断面図である。
図３４（Ａ）は沈胴状態におけるシャッタ用フレキシブル基板８０の状態を示す説明図、（Ｂ）は広角状態におけるシャッタ用フレキシブル基板８０の状態を示す説明図である。
図３５はシャッタ用フレキシブル基板８０の引き回しを示す斜視図、図３６はシャッタ用フレキシブル基板８０が挿通されるベース１２部分の平面図である。 Next, routing of the shutter flexible substrate 80 will be described.
First, the shutter flexible substrate 80 will be described.
30A and 30B are perspective views of the shutter flexible substrate 80. FIG.
31 is a sectional view of the lens barrel showing the state of the shutter flexible substrate 80 in the retracted state, FIG. 32 is a sectional view of the lens barrel showing the state of the shutter flexible substrate 80 in the wide-angle state, and FIG. 33 is a shutter for the shutter in the telephoto state. 3 is a cross-sectional view of a lens barrel showing a state of a flexible substrate 80. FIG.
FIG. 34A is an explanatory view showing the state of the shutter flexible substrate 80 in the retracted state, and FIG. 34B is an explanatory view showing the state of the shutter flexible substrate 80 in the wide-angle state.
35 is a perspective view showing the routing of the shutter flexible substrate 80, and FIG. 36 is a plan view of the base 12 portion through which the shutter flexible substrate 80 is inserted.

図３０に示すように、シャッタ用フレキシブル基板８０は、可撓性を有する絶縁基板に銅などの導電材料による導電パターンが形成されたものであり、帯板状に形成されている。
シャッタ用フレキシブル基板８０の基端部８００２にはメインフレキシブル基板６０に電気的に接続される接続端子が形成され、先端部８００４には電装部１９に電気的に接続される接続端子が形成されている。
基端部８００２と先端部８００４の間は均一幅を有する接続部８００６で接続され、接続部８００６の基端部８００２寄りの箇所には接続部８００６の幅方向の一方が膨出された幅広部８００８が形成されている。
接続部８００６の一方の面のうち、基端部８００２と接続部８００６の境目から所定長さにわたる部分にはシャッタ用フレキシブル基板８０よりも硬い材料（例えば合成樹脂材料）で形成された帯板状の補強板８２が両面接着テープなどによって貼り付けられている。
補強板８２は、図３５に示すように、シャッタ用フレキシブル基板８０がガイド柱５０に沿って配設された状態で、補強板８２の上端がガイド柱５０の上端よりもベース１２寄りの箇所に位置するように構成されている。言い換えると、補強板８２は、ガイド柱５０の長さに対応した長さで設けられ、シャッタ用フレキシブル基板８０がガイド柱５０の面に臨む箇所にガイド柱５０に沿って延在するようにシャッタ用フレキシブル基板８０に取着されている。
したがって、シャッタ用フレキシブル基板８０のうち補強板８２が貼り付けられている部分は、補強板８２の形状にならって直線状に延在した状態が保持されている。
一方、シャッタ用フレキシブル基板８０のうち補強板８２が貼り付けられていない部分、すなわち、基端部８００２、基端部８００２と接続部８００６の間の部分、先端部８００４寄りの接続部８００６の部分、先端部８００４は可撓性を有した状態となっている。 As shown in FIG. 30, the shutter flexible substrate 80 is formed by forming a conductive pattern of a conductive material such as copper on a flexible insulating substrate, and is formed in a strip shape.
A connection terminal that is electrically connected to the main flexible substrate 60 is formed at the base end portion 8002 of the shutter flexible substrate 80, and a connection terminal that is electrically connected to the electrical component 19 is formed at the distal end portion 8004. Yes.
The proximal end portion 8002 and the distal end portion 8004 are connected by a connecting portion 8006 having a uniform width, and a wide portion in which one side in the width direction of the connecting portion 8006 bulges out at a location near the proximal end portion 8002 of the connecting portion 8006. 8008 is formed.
Of one surface of the connecting portion 8006, a portion extending from the boundary between the base end portion 8002 and the connecting portion 8006 to a predetermined length is formed of a band plate formed of a material harder than the shutter flexible substrate 80 (for example, a synthetic resin material). The reinforcing plate 82 is attached with a double-sided adhesive tape or the like.
As shown in FIG. 35, the reinforcing plate 82 is such that the upper end of the reinforcing plate 82 is closer to the base 12 than the upper end of the guide column 50 in a state where the shutter flexible substrate 80 is disposed along the guide column 50. Configured to be located. In other words, the reinforcing plate 82 is provided with a length corresponding to the length of the guide column 50, and the shutter is arranged so that the shutter flexible substrate 80 extends along the guide column 50 at a position facing the surface of the guide column 50. It is attached to the flexible substrate 80 for use.
Accordingly, the portion of the shutter flexible substrate 80 to which the reinforcing plate 82 is attached is held in a state of extending linearly following the shape of the reinforcing plate 82.
On the other hand, the portion of the shutter flexible substrate 80 where the reinforcing plate 82 is not attached, that is, the base end portion 8002, the portion between the base end portion 8002 and the connection portion 8006, and the portion of the connection portion 8006 near the front end portion 8004. The tip portion 8004 is in a flexible state.

次にシャッタ用フレキシブル基板８０の引き回しについて説明する。
図３６に示すように、３つのガイド柱５０のうちの１つのガイド柱５０が設けられているベース１２の部分には、フレキシブル基板挿通用の挿通孔１２６０が設けられている。
挿通孔１２６０は、円筒壁１２０８の半径方向の外方に向いたガイド柱５０の外側に設けられている。
挿通孔１２６０は、ガイド柱５０のウェブ５００２の面と各フランジ５００４の内面とで形成される輪郭に沿って形成されシャッタ用フレキシブル基板８０の接続部８００６の幅よりも大きな寸法の幅で形成された幅狭孔部１２６０Ａと、幅狭孔部１２６０Ａに接続されシャッタ用フレキシブル基板８０の幅広部８００８の幅よりも大きな寸法の幅で形成された幅広孔部１２６０Ｂとで形成されている。 Next, routing of the shutter flexible substrate 80 will be described.
As shown in FIG. 36, an insertion hole 1260 for inserting a flexible board is provided in a portion of the base 12 where one of the three guide pillars 50 is provided.
The insertion hole 1260 is provided on the outer side of the guide column 50 facing outward in the radial direction of the cylindrical wall 1208.
The insertion hole 1260 is formed along a contour formed by the surface of the web 5002 of the guide column 50 and the inner surface of each flange 5004 and has a width larger than the width of the connection portion 8006 of the shutter flexible substrate 80. The narrow hole portion 1260A and the wide hole portion 1260B connected to the narrow hole portion 1260A and having a width larger than the width of the wide portion 8008 of the shutter flexible substrate 80 are formed.

シャッタ用フレキシブル基板８０を引き回すにあたって、図３５に示すように、シャッタ用フレキシブル基板８０の先端部８００４をベース１２の後面１２１２から幅広孔部１２６０Ｂに挿入する。そして、幅広部８００６が、ベース１２に設けられた段部１２６２に当接するまで挿入し、接続部８００６を幅狭孔部１２６０Ａに位置させる。これによりシャッタ用フレキシブル基板８０はベース１２の前面１２１４から前方に延出された状態となる。
このようにしてベース１２の前方に導出されたシャッタ用フレキシブル基板８０の接続部８００６を第２レンズ保持枠１６０２の内周面１６２０（図３４参照）に臨むガイド柱５０の面に沿って、すなわちガイド柱５０の両端のフランジ５００４の間でウェブ５００２に沿って配設する。これにより、シャッタ用フレキシブル基板８０はガイド溝１６０４とガイド柱５０とで構成される空間に沿って延在することになる。より詳細には、シャッタ用フレキシブル基板８０は第２レンズ保持枠１６０２のガイド溝１６０４の底面１６０４Ｂとこの底面１６０４Ｂに臨むガイド柱５０の面とで構成される空間に沿って延在する。
次いで、シャッタ用フレキシブル基板８０の基端部８００２の接続端子を後述するようにメインフレキシブル基板６０に半田付けなどにより電気的に接続し固定する。より詳細には、基端部８００２は、メインフレキシブル基板６０を介してベース１２の後面１２１２に固定され、この基端部８００２が固定されるベース１２の後面１２１２の箇所は、ガイド柱５０に対して円筒壁１２０８の半径方向の外側に位置している。
したがって、接続部８００６と基端部８００２の境の部分は、図３０に示すように９０度屈曲されることになり、この屈曲された境の部分で生じる反力によって接続部８００６はガイド柱５０の面（ウェブ５００２の面）側に押し付けられる方向に付勢される。
また、シャッタ用フレキシブル基板８０の先端部８００４の接続端子を電装部１９に半田付けなどにより電気的に接続し固定する。
これでシャッタ用フレキシブル基板８０の引き回しが完了する。 In routing the shutter flexible substrate 80, as shown in FIG. 35, the front end portion 8004 of the shutter flexible substrate 80 is inserted from the rear surface 1212 of the base 12 into the wide hole portion 1260B. And it inserts until the wide part 8006 contact | abuts to the step part 1262 provided in the base 12, and the connection part 8006 is located in the narrow hole part 1260A. As a result, the shutter flexible substrate 80 extends forward from the front surface 1214 of the base 12.
In this way, the connecting portion 8006 of the shutter flexible substrate 80 led out in front of the base 12 is along the surface of the guide column 50 facing the inner peripheral surface 1620 (see FIG. 34) of the second lens holding frame 1602, that is, The guide pillar 50 is disposed along the web 5002 between the flanges 5004 at both ends. As a result, the shutter flexible substrate 80 extends along the space formed by the guide grooves 1604 and the guide pillars 50. More specifically, the shutter flexible substrate 80 extends along a space formed by the bottom surface 1604B of the guide groove 1604 of the second lens holding frame 1602 and the surface of the guide column 50 facing the bottom surface 1604B.
Next, the connection terminal of the base end portion 8002 of the shutter flexible substrate 80 is electrically connected and fixed to the main flexible substrate 60 by soldering or the like as will be described later. More specifically, the base end portion 8002 is fixed to the rear surface 1212 of the base 12 via the main flexible board 60, and the location of the rear surface 1212 of the base 12 to which the base end portion 8002 is fixed is relative to the guide column 50. And located outside the cylindrical wall 1208 in the radial direction.
Therefore, the boundary portion between the connecting portion 8006 and the base end portion 8002 is bent by 90 degrees as shown in FIG. 30, and the connecting portion 8006 is guided by the guide column 50 by the reaction force generated at the bent boundary portion. It is urged | biased in the direction pressed on the surface (surface of the web 5002) side.
Further, the connection terminal of the front end portion 8004 of the shutter flexible substrate 80 is electrically connected and fixed to the electrical equipment portion 19 by soldering or the like.
Thus, the routing of the shutter flexible substrate 80 is completed.

次に鏡筒１０が沈胴状態、広角状態、望遠状態に移動した場合のシャッタ用フレキシブル基板８０の動きについて説明する。
図３１、図３４（Ａ）に示すように、鏡筒１０が沈胴状態にある場合には、第２レンズ保持枠１６０２が最もベース１２寄りの箇所に位置しているため、シャッタ用フレキシブル基板８０の接続部８００６の基端部８００２寄り部分は、ガイド溝１６０４とガイド柱５０とで構成される空間に沿って延在し、接続部８００６の長手方向の中間部がガイド柱５０の前端で１８０度屈曲され、接続部８００６の先端部８００４寄り部分がベース１２方向に延在した状態となっている。
言い換えると、シャッタ用フレキシブル基板８０の先端部８００４寄り部分は、ガイド柱５０の前端で折り返され第２レンズ保持枠１６０２の内周面１６２０に臨むガイド柱５０の面とは反対側に位置するガイド柱の面に沿ってベース１２側に向けて延在した状態となっている。
図３２に示すように、鏡筒１０が沈胴状態から広角状態に移動すると、第２レンズ保持枠１６０２が僅かに前方に移動するため、シャッタ用フレキシブル基板８０の先端部８００４が前方に移動した分だけ、１８０度屈曲された部分（ガイド柱５０の前端に臨む部分）がガイド柱５０の前端から前方に移動する。
図３３、図３４（Ｂ）に示すように、鏡筒１０が広角状態から望遠状態に移動すると、シャッタ用フレキシブル基板８０の先端部８００４が前方に移動した分だけ、１８０度屈曲された部分（ガイド柱５０の前端に臨む部分）がガイド柱５０の前端から前方に大きく移動する。
この際、ガイド柱５０の前端よりも先に位置する接続部８００６はシャッタ用フレキシブル基板８０の弾性によりガイド軸５０のウェブ５００２の面の延長方向に沿って、言い換えると、ガイド柱５０の前端から前方に第２レンズ保持枠１６０２の内周面１６２０に沿って直線状に延在する。
なお、鏡筒１０が望遠状態から広角状態に移動した場合、あるいは、鏡筒１０が広角状態から沈胴状態に移動した場合には、それぞれ上述した順番と逆の順番でシャッタ用フレキシブル基板８０が移動する。 Next, the movement of the shutter flexible substrate 80 when the lens barrel 10 is moved to the retracted state, the wide-angle state, and the telephoto state will be described.
As shown in FIGS. 31 and 34A, when the lens barrel 10 is in the retracted state, the second lens holding frame 1602 is positioned closest to the base 12, so that the shutter flexible substrate 80 is provided. The portion closer to the base end portion 8002 of the connection portion 8006 extends along the space formed by the guide groove 1604 and the guide column 50, and the intermediate portion in the longitudinal direction of the connection portion 8006 is 180 at the front end of the guide column 50. The portion close to the tip portion 8004 of the connection portion 8006 extends in the direction of the base 12.
In other words, the portion closer to the front end portion 8004 of the shutter flexible substrate 80 is folded back at the front end of the guide column 50 and is located on the opposite side to the surface of the guide column 50 facing the inner peripheral surface 1620 of the second lens holding frame 1602. It is in a state of extending toward the base 12 side along the column surface.
As shown in FIG. 32, when the lens barrel 10 moves from the retracted state to the wide-angle state, the second lens holding frame 1602 slightly moves forward, so that the tip 8004 of the shutter flexible substrate 80 has moved forward. Only the portion bent 180 degrees (the portion facing the front end of the guide column 50) moves forward from the front end of the guide column 50.
As shown in FIGS. 33 and 34B, when the lens barrel 10 moves from the wide-angle state to the telephoto state, a portion bent 180 degrees by the amount that the front end portion 8004 of the shutter flexible substrate 80 has moved forward ( The portion facing the front end of the guide column 50 greatly moves forward from the front end of the guide column 50.
At this time, the connecting portion 8006 positioned before the front end of the guide column 50 is extended along the extending direction of the surface of the web 5002 of the guide shaft 50 by the elasticity of the shutter flexible substrate 80, in other words, from the front end of the guide column 50. It extends linearly along the inner peripheral surface 1620 of the second lens holding frame 1602 forward.
When the lens barrel 10 moves from the telephoto state to the wide-angle state, or when the lens barrel 10 moves from the wide-angle state to the retracted state, the shutter flexible substrate 80 moves in the order opposite to the above-described order. To do.

このような構成とした場合、軸方向に延在し第２レンズ保持枠１６０２の内周面１６２０に臨むガイド柱５０がベース１２から立設され、シャッタ用フレキシブル基板８０は、第２レンズ保持枠１６０２の内周面１６２０に臨むガイド柱５０の面に沿ってベース１２から延出されその先端部８００４が電装部１９に接続されているので、第２レンズ保持枠１６０２が移動してもシャッタ用フレキシブル基板８０はガイド柱５０に沿った状態が保たれるため、シャッタ用フレキシブル基板８０の部分が第２レンズ保持枠１６０２に干渉せずレンズ保持枠の円滑な移動を確保しつつ、シャッタ用フレキシブル基板８０の占有スペースを最小限に維持することができ、鏡筒１０の小型化を図る上で有利となりひいては撮像装置１００の小型化を図る上でも有利となる。また、シャッタ用フレキシブル基板８０は第２レンズ保持枠１６０２のガイド溝１６０４の底面１６０４Ｂとこの底面１６０４Ｂに臨むガイド柱５０の面とで構成される空間に沿って延在しているため、占有スペースを削減する上で有利となる。
また、シャッタ用フレキシブル基板８０の接続部８００６の一方の面に補強板８２を取着したので、第２レンズ保持枠１６０２の移動により接続部８００６を屈曲させる方向（圧縮させる方向）の力が作用しても接続部８００６がガイド柱５０の面に沿った姿勢を維持することができ、シャッタ用フレキシブル基板８０が第２レンズ保持枠１６０２に干渉することを防止でき、第２レンズ保持枠１６０２を円滑に移動させる上で有利となる。 In such a configuration, the guide pillar 50 extending in the axial direction and facing the inner peripheral surface 1620 of the second lens holding frame 1602 is erected from the base 12, and the shutter flexible substrate 80 includes the second lens holding frame. Since the distal end portion 8004 extends from the base 12 along the surface of the guide pillar 50 facing the inner peripheral surface 1620 of the 1602 and is connected to the electrical component 19, even if the second lens holding frame 1602 moves, the shutter Since the flexible substrate 80 is maintained along the guide pillars 50, the shutter flexible substrate 80 does not interfere with the second lens holding frame 1602 and the lens holding frame can be smoothly moved while the shutter flexible substrate 80 is in a flexible state. The space occupied by the substrate 80 can be kept to a minimum, which is advantageous in reducing the size of the lens barrel 10 and, in turn, reducing the size of the imaging device 100. But it is advantageous. Further, since the shutter flexible substrate 80 extends along a space formed by the bottom surface 1604B of the guide groove 1604 of the second lens holding frame 1602 and the surface of the guide pillar 50 facing the bottom surface 1604B, It is advantageous in reducing the amount.
Further, since the reinforcing plate 82 is attached to one surface of the connection portion 8006 of the shutter flexible substrate 80, a force in a direction in which the connection portion 8006 is bent (a direction of compression) is applied by the movement of the second lens holding frame 1602. Even in this case, the connecting portion 8006 can maintain the posture along the surface of the guide pillar 50, the shutter flexible substrate 80 can be prevented from interfering with the second lens holding frame 1602, and the second lens holding frame 1602 can be prevented. This is advantageous for smooth movement.

また、ベース１２にはカム環２０の周方向に間隔をおいて３つのガイド柱５０が軸方向と平行をなすように突設され、第２レンズ保持枠１６０２の内周部が各ガイド柱５０に係合することでそれら各ガイド柱５０により第２レンズ保持枠１６０２が径方向に回転不能かつ軸方向に移動可能に支持されるので、前記光軸を中心とし各ガイド柱５０を通る円周上で各ガイド柱５０の間のスペースを利用して例えば図２７に示すようにガイド軸１２１６、１２１８やマグネット４００２などのような撮像装置の構成部材を配設でき、直進案内環を第１、第２レンズ保持枠１４０２，１６０２の外周とカム環２０の内周の間に配置する場合に比較して、鏡筒１０の直径方向の寸法を縮小する上で有利となり、撮像装置１００の小型化を図る上でも有利となる。また、第１、第２レンズ保持枠１４０２，１６０２をベース１２に組み込む場合には、ベース１２の各ガイド柱５０に第２レンズ保持枠１６０２のガイド溝１６０４を係合させて第２レンズ保持枠１６０２をベース１２方向に挿入し、次いで、各ガイド部１６０８に第１レンズ保持枠１４０２のガイド溝１４０６を係合させて第１レンズ保持枠１４０２をベース１２方向に挿入するので、第１、第２レンズ保持枠１４０２，１６０２の組み立てを簡単に行うことができる。また、鏡筒１０の沈胴状態で、第１レンズ保持枠１４０２の第１カムピン１４１２と、第２レンズ保持枠１６０２の第２カムピン１６１０は、前記光軸方向においてほぼ同一の箇所に位置し、かつ、周方向に間隔をおいた箇所に位置するので、第１、第２カムピン１４１２、１６１０をカム環２０の第１、第２開放溝２０１０Ａ、２０１２Ａから第１、第２カム溝２０１０，２０１２に同時に挿入することができ、従来のように一方のカムピンをカム溝に挿入した後、カム環２０を１回転させ、その後に他方のカムピンをカム溝に挿入する場合に比べて組み立て作業を簡素化する上で有利となる。
また、ガイド柱５０は、その断面が、ウェブ５００２と、このウェブ５００２の両端のフランジ５００４からなるI字状を呈しているため、ガイド柱５０の強度を確保しつつガイド柱５０の占有スペースを削減する上で有利となる。また、ガイド柱５０を構成する両端のフランジ５００４の外面５００４Ａが第２レンズ保持枠１６０２のガイド溝１６０４の側面１６０４Ａに係合し、両端のフランジ５００４の端面５００４Ｂがガイド溝１６０４の底面１６０４Ｂに係合しているので、ウェブ５００２の部分とガイド溝１６０４の底面１６０４Ｂとの間にデッドスペースが形成されている。したがって、ガイド溝１６０４の半径方向外側に面した第２レンズ保持枠１６０２の箇所に第２カムピン１６１０を圧入することで第２カムピン１６１０の圧入方向の先端部がレンズ保持枠１６０２の内周面から突出した場合に、その先端部が前記デッドスペースに収容されるので、前記ガイド柱５０のデッドスペースを有効活用することによって鏡筒１０の直径方向の寸法の縮小を図る上で有利となる。 Further, three guide pillars 50 are provided on the base 12 at intervals in the circumferential direction of the cam ring 20 so as to be parallel to the axial direction, and the inner peripheral portion of the second lens holding frame 1602 is provided for each guide pillar 50. Since the second lens holding frame 1602 is supported by each of the guide columns 50 so as not to rotate in the radial direction but to be movable in the axial direction, the circumference passing through the guide columns 50 around the optical axis. As shown in FIG. 27, for example, the components of the imaging apparatus such as the guide shafts 1216 and 1218 and the magnet 4002 can be disposed by using the space between the guide pillars 50, and the linear guide ring is set to the first, Compared to the case where the lens barrel 10 is arranged between the outer periphery of the second lens holding frames 1402 and 1602 and the inner periphery of the cam ring 20, it is advantageous in reducing the diameter dimension of the lens barrel 10, and the imaging apparatus 100 can be downsized. Advantageous in terms of It made. When the first and second lens holding frames 1402 and 1602 are incorporated in the base 12, the guide grooves 1604 of the second lens holding frame 1602 are engaged with the guide pillars 50 of the base 12, so that the second lens holding frame is engaged. 1602 is inserted in the direction of the base 12, and then the first lens holding frame 1402 is inserted in the direction of the base 12 by engaging the guide grooves 1406 of the first lens holding frame 1402 with the respective guide portions 1608. The two-lens holding frames 1402 and 1602 can be easily assembled. In the retracted state of the lens barrel 10, the first cam pin 1412 of the first lens holding frame 1402 and the second cam pin 1610 of the second lens holding frame 1602 are located at substantially the same location in the optical axis direction, and Since the first and second cam pins 1412 and 1610 are located at locations spaced in the circumferential direction, the first and second opening grooves 2010A and 2012A of the cam ring 20 are changed from the first and second cam grooves 2010 and 2012 to each other. It can be inserted at the same time, and after one cam pin is inserted into the cam groove as before, the cam ring 20 is rotated once and then the other cam pin is inserted into the cam groove. This is advantageous.
Moreover, since the cross section of the guide column 50 has an I-shape including the web 5002 and the flanges 5004 at both ends of the web 5002, the space occupied by the guide column 50 is secured while ensuring the strength of the guide column 50. This is advantageous for reduction. Further, the outer surfaces 5004A of the flanges 5004 at both ends constituting the guide pillar 50 are engaged with the side surfaces 1604A of the guide grooves 1604 of the second lens holding frame 1602, and the end surfaces 5004B of the flanges 5004 at both ends are engaged with the bottom surfaces 1604B of the guide grooves 1604. Therefore, a dead space is formed between the portion of the web 5002 and the bottom surface 1604B of the guide groove 1604. Accordingly, the second cam pin 1610 is press-fitted into a position of the second lens holding frame 1602 facing the radially outer side of the guide groove 1604, so that the distal end portion of the second cam pin 1610 is pressed from the inner peripheral surface of the lens holding frame 1602. When protruding, the tip end portion is accommodated in the dead space. Therefore, it is advantageous to reduce the size of the lens barrel 10 in the diameter direction by effectively utilizing the dead space of the guide column 50.

次に、メインフレキシブル基板６０、コイル用フレキシブル基板４００８、シャッタ用フレキシブル基板８０の接続構造について説明する。
図３７はメインフレキシブル基板６０、コイル用フレキシブル基板４００８、シャッタ用フレキシブル基板８０の位置関係を示す平面図、図３８は図３７のＡＡ線断面図であり、（Ａ）はメインフレキシブル基板６０の起伏面部の折り曲げ状態を示す図、（Ｂ）はメインフレキシブル基板６０の起伏面部の平坦状態を示す図、図３９はメインフレキシブル基板６０の起伏面部の折り曲げ状態を示す斜視図、図４０はメインフレキシブル基板６０の起伏面部の平坦状態を示す斜視図、図４１は第１、第２の半田付け端子部が半田付けされた状態を示す斜視図である。 Next, a connection structure of the main flexible substrate 60, the coil flexible substrate 4008, and the shutter flexible substrate 80 will be described.
37 is a plan view showing the positional relationship between the main flexible board 60, the coil flexible board 4008, and the shutter flexible board 80, FIG. 38 is a sectional view taken along the line AA in FIG. 37, and FIG. The figure which shows the bending state of a surface part, (B) is a figure which shows the flat state of the raising / lowering surface part of the main flexible substrate 60, FIG. 39 is a perspective view which shows the bending state of the raising / lowering surface part of the main flexible substrate 60, FIG. 60 is a perspective view showing a flat state of the undulating surface portion 60, and FIG. 41 is a perspective view showing a state in which the first and second soldering terminal portions are soldered.

まず、メインフレキシブル基板６０について説明する。
メインフレキシブル基板６０は、可撓性を有する絶縁基板と、前記絶縁基板上に形成された導電パターンとで構成され、図９に示すように、ベース１２の後面１２１２に取着される取着面部６２と、取着面部６２から延在される可動面部６４とを有している。
図３７に示すように、取着面部６２には、前記ホール素子７００２の他に、カム環２０の後端にカム環２０の周方向に沿って設けられた検知片２０２０（図８参照）を検知するフォトインターラプタ７２が実装されている。
このフォトインターラプタ７２は、メインフレキシブル基板６０がベース１２の後面１２１２に取着された状態で、ベース１２の開口（不図示）を介してベース１２の前面１２１４から前方に突出しカム環２０の検知片２０２０に臨むように配設される。
フォトインターラプタ７２の検出信号はメインフレキシブル基板６０を介して制御部１４８に供給され、制御部１４８は前記検出信号によってカム環２０の回転位置を識別するように構成されている。 First, the main flexible substrate 60 will be described.
The main flexible substrate 60 is composed of a flexible insulating substrate and a conductive pattern formed on the insulating substrate, and is attached to the rear surface 1212 of the base 12 as shown in FIG. 62 and a movable surface portion 64 extending from the attachment surface portion 62.
As shown in FIG. 37, in addition to the Hall element 7002, a detection piece 2020 (see FIG. 8) provided along the circumferential direction of the cam ring 20 is provided on the attachment surface portion 62 in addition to the Hall element 7002. A photo interrupter 72 to be detected is mounted.
This photo interrupter 72 projects forward from the front surface 1214 of the base 12 through the opening (not shown) of the base 12 in a state where the main flexible board 60 is attached to the rear surface 1212 of the base 12 and detects the cam ring 20. It arrange | positions so that the piece 2020 may be faced.
The detection signal of the photo interrupter 72 is supplied to the control unit 148 via the main flexible substrate 60, and the control unit 148 is configured to identify the rotational position of the cam ring 20 by the detection signal.

取着面部６２寄りの可動面部６４の部分には、取着面部６２に対して直角に折り曲げられベース１２の後面１２１２から離れた折り曲げ状態（図３８（Ａ）、図３９）と、ベース１２の後面１２１２に合わされて取着される平坦状態（図３８（Ｂ）、図４０）との間で起伏可能な起伏面部６６が形成されている。
ベース１２の後面１２１２に臨む起伏面部６６の前面に第１の半田付け端子部６６０２が形成され、本実施例では、直線上に間隔をおいて並んだ３つの接続端子６６０２Ａが前記直線と直交する方向に間隔をおいて２列形成され、合計６つの接続端子６６０２Ａが形成されている。
起伏面部６６がベース１２の後面１２１２に臨む前面と反対側の後面に前記絶縁基板よりも硬い材料からなり起伏面部６６に対応した大きさの補強板６８が取着されている。 The movable surface portion 64 near the attachment surface portion 62 is bent at a right angle with respect to the attachment surface portion 62 and separated from the rear surface 1212 of the base 12 (FIGS. 38A and 39), and the base 12 A undulating surface portion 66 that can be undulated between the flat state (FIG. 38B, FIG. 40) attached to and attached to the rear surface 1212 is formed.
A first soldering terminal portion 6602 is formed on the front surface of the undulating surface portion 66 facing the rear surface 1212 of the base 12, and in this embodiment, three connection terminals 6602A arranged on the straight line at intervals are orthogonal to the straight line. Two rows are formed at intervals in the direction, and a total of six connection terminals 6602A are formed.
A reinforcing plate 68 made of a material harder than the insulating substrate is attached to the rear surface opposite to the front surface where the undulating surface portion 66 faces the rear surface 1212 of the base 12, and has a size corresponding to the undulating surface portion 66.

次にシャッタ用フレキシブル基板８０について説明する。
シャッタ用フレキシブル基板８０の基端部８００２（後端）は、前述したようにベース１２の挿通孔１２６０（開口に）を挿通してベース１２の後面１２１２の後方に延出されている。
シャッタ用フレキシブル基板８０の基端部８００２には、第２の半田付け端子部８０２０が形成され、本実施例では基端部８００２の幅方向の両側にそれぞれ２つの接続端子８０２０Ａが形成され、合計４つの接続端子８０２０Ａが形成されている。
次にコイル用フレキシブル基板４００８について説明する。
コイル用フレキシブル基板４００８の基端部４０１２も、シャッタ用フレキシブル基板８０と同様に前記挿通孔１２６０を挿通してベース１２の後面１２１２の後方に延出されている。
コイル用フレキシブル基板４００８の基端部４０１２には、第２の半田付け端子部４０１４が形成され、本実施例では基端部４０１２の幅方向の両側にそれぞれ１つの接続端子４０１４Ａが形成され、合計２つの接続端子４０１４Ａが形成されている。 Next, the shutter flexible substrate 80 will be described.
As described above, the base end portion 8002 (rear end) of the shutter flexible substrate 80 is inserted through the insertion hole 1260 (through the opening) of the base 12 and extends behind the rear surface 1212 of the base 12.
A second soldering terminal portion 8020 is formed on the base end portion 8002 of the shutter flexible substrate 80. In this embodiment, two connection terminals 8020A are formed on both sides in the width direction of the base end portion 8002, and the total amount Four connection terminals 8020A are formed.
Next, the coil flexible substrate 4008 will be described.
Similarly to the shutter flexible substrate 80, the base end portion 4012 of the coil flexible substrate 4008 extends through the insertion hole 1260 and extends behind the rear surface 1212 of the base 12.
A second soldering terminal portion 4014 is formed on the base end portion 4012 of the coil flexible substrate 4008. In this embodiment, one connection terminal 4014A is formed on each side of the base end portion 4012 in the width direction, and the total Two connection terminals 4014A are formed.

次に、メインフレキシブル基板６０とシャッタ用フレキシブル基板８０、コイル用フレキシブル基板４００８との半田付けについて説明する。
まず、図３８（Ａ）、図３９に示すように、起伏面部６６を折り曲げ状態とする。
この状態で、コイル用フレキシブル基板４００８の第２の半田付け端子部４０１４の各接続端子４０１４Ａを起伏面部６６の第１の半田付け端子部６００２の各接続端子６００２Ａ上に重ね合わせて半田付けする。
次いで、シャッタ用フレキシブル基板８０の第２の半田付け端子部８０２０の各接続端子８０２０Ａを、コイル用フレキシブル基板４００８の第２の半田付け端子部４０１４の後端を露出させた状態でコイル用フレキシブル基板４００８の上から起伏面部６６の第１の半田付け端子部６００２の各接続端子６００２Ａ上に重ね合わせて半田付けする。
これにより図４１に示すように、各接続端子４０１４Ａ、６００２Ａの間にわたって半田Ｈが半田付けされるとともに、各接続端子８０２０Ａ、６００２Ａの間にわたって半田Ｈが半田付けされ、次に、メインフレキシブル基板６０とシャッタ用フレキシブル基板８０、コイル用フレキシブル基板４００８とが電気的に接続される。 Next, soldering of the main flexible board 60, the shutter flexible board 80, and the coil flexible board 4008 will be described.
First, as shown in FIGS. 38A and 39, the undulating surface portion 66 is in a bent state.
In this state, the connection terminals 4014A of the second soldering terminal portion 4014 of the coil flexible substrate 4008 are superposed on the connection terminals 6002A of the first soldering terminal portion 6002 of the undulating surface portion 66 and soldered.
Next, each connection terminal 8020A of the second soldering terminal portion 8020 of the shutter flexible substrate 80 is exposed to the rear end of the second soldering terminal portion 4014 of the coil flexible substrate 4008. From above 4008, soldering is performed by superimposing on each connection terminal 6002A of the first soldering terminal portion 6002 of the undulating surface portion 66.
As a result, as shown in FIG. 41, the solder H is soldered between the connection terminals 4014A and 6002A, and the solder H is soldered between the connection terminals 8020A and 6002A. Are electrically connected to the shutter flexible substrate 80 and the coil flexible substrate 4008.

次いで、図３８（Ｂ）、図４０に示すように、起伏面部６６を平坦状態に曲げ、図９に示すように、取付金具７４を取着面部６２および起伏面部６６の後面に当て付け、取付金具７４の両側に設けられた係合凹部７４０２をベース１２の両側の係合凸部１２３２に係合させることでメインフレキシブル基板６０のベース１２への取り付けが完了する。
この状態で、半田Ｈはメインフレキシブル基板６０の前面とベース１２の後面１２１２との間に位置しているため、メインフレキシブル基板６０の絶縁基板によって覆われ外方に露出していない。
なお、本実施例では、ベース１２の後面１２１２には凹部１２３０が形成され、第１、第２の半田付け端子部６００２、４０１４，８０２０に半田付けされた半田Ｈはこの凹部１２３０に収容される。 Next, as shown in FIGS. 38 (B) and 40, the undulating surface portion 66 is bent into a flat state, and as shown in FIG. 9, the mounting bracket 74 is applied to the rear surface of the attaching surface portion 62 and the undulating surface portion 66, and attached. The engagement concave portions 7402 provided on both sides of the metal fitting 74 are engaged with the engagement convex portions 1232 on both sides of the base 12 to complete the attachment of the main flexible board 60 to the base 12.
In this state, since the solder H is located between the front surface of the main flexible substrate 60 and the rear surface 1212 of the base 12, it is covered with the insulating substrate of the main flexible substrate 60 and is not exposed to the outside.
In this embodiment, a recess 1230 is formed on the rear surface 1212 of the base 12, and the solder H soldered to the first and second soldering terminal portions 6002, 4014, and 8020 is accommodated in the recess 1230. .

このような構成にすると、メインフレキシブル基板６０に起伏面部６６が形成され、ベース１２の後面１２１２に臨む起伏面部６６の前面に第１の半田付け端子部６００２が形成され、シャッタ用フレキシブル基板８０、コイル用フレキシブル基板４００８の後端に第２の半田付け端子部４０１４，８０２０がそれぞれ形成されている。
したがって、起伏面部６６を前記折り曲げ状態として起伏面部６６の第１の半田付け端子部６００２上に、シャッタ用フレキシブル基板８０、コイル用フレキシブル基板４００８の第２の半田付け端子部４０１４，８０２０を重ね合わされた状態で半田付けを行うことができるため、組立作業を簡素化する上で有利となる。
また、起伏面部６６を前記平坦状態とすれば半田Ｈがメインフレキシブル基板６０で覆われ外方に露出しないので、従来と異なり半田Ｈの部分と他の部材との接触を防止するためのスペースを確保する必要がないため小型化を図る上で有利となり、また、半田Ｈの部分に絶縁テープなどの部材を貼付する必要が無いため部品点数の削減を図りコスト削減を図る上で有利となる。
また、起伏面部６６に起伏面部６６に対応した大きさの補強板６８を取着したので、起伏面部６６の折り曲げを確実に行え、かつ、折り曲げた際に平坦性を確保でき半田付け作業を効率よく行う上で有利となる。
また、ベース１２の後面１２１２に半田Ｈを収容する凹部１２３０を設けたので、起伏面部６６を平坦状態とした場合にこの起伏面部６６上の半田Ｈの部分がベース１２の後面１２１２から後方にスペースを占有することがなく、小型化を図る上で有利となる。 With such a configuration, the undulating surface portion 66 is formed on the main flexible substrate 60, the first soldering terminal portion 6002 is formed on the front surface of the undulating surface portion 66 facing the rear surface 1212 of the base 12, and the shutter flexible substrate 80, Second solder terminal portions 4014 and 8020 are formed at the rear ends of the coil flexible substrate 4008, respectively.
Therefore, the shutter flexible substrate 80 and the second solder terminal portions 4014 and 8020 of the coil flexible substrate 4008 are superimposed on the first soldering terminal portion 6002 of the undulating surface portion 66 with the undulating surface portion 66 in the bent state. In this state, soldering can be performed, which is advantageous in simplifying the assembly work.
Further, if the undulating surface portion 66 is in the above flat state, the solder H is covered with the main flexible substrate 60 and is not exposed to the outside. Therefore, unlike the conventional case, a space for preventing contact between the solder H portion and other members is provided. Since it is not necessary to ensure the size, it is advantageous in reducing the size, and since there is no need to attach a member such as an insulating tape to the solder H portion, it is advantageous in reducing the number of parts and reducing the cost.
In addition, since the reinforcing plate 68 having a size corresponding to the undulating surface portion 66 is attached to the undulating surface portion 66, the undulating surface portion 66 can be reliably bent, and flatness can be ensured when bent, so that the soldering operation is efficient. It is advantageous to perform well.
Further, since the recess 1230 for accommodating the solder H is provided on the rear surface 1212 of the base 12, when the undulating surface portion 66 is in a flat state, the portion of the solder H on the undulating surface portion 66 is spaced backward from the rear surface 1212 of the base 12. This is advantageous for downsizing.

次に、本発明の要部である２群レンズ１６および第２レンズ保持枠１６０２について説明する。
図４２は２群レンズ１６と第２レンズ保持枠１６０２の断面図、図４３は第２レンズ枠１６０２の斜視図、図４４、図４５は２群レンズ１６と第２レンズ保持枠１６０２の組み立て説明図、図４６は２群レンズ１６の光軸合わせ調整の説明図である。 Next, the second group lens 16 and the second lens holding frame 1602 which are the main parts of the present invention will be described.
42 is a cross-sectional view of the second group lens 16 and the second lens holding frame 1602, FIG. 43 is a perspective view of the second lens frame 1602, and FIGS. 44 and 45 illustrate assembly of the second group lens 16 and the second lens holding frame 1602. FIG. 46 and FIG. 46 are explanatory diagrams for adjusting the optical axis of the second group lens 16.

まず、２群レンズ１６について説明する。
図４２に示すように、２群レンズ１６は、接合レンズ１６Ａとレンズ１６Ｂを有している。
接合レンズ１６Ａは、凹レンズ１６５０と、この凹レンズ１６５０よりも外径の小さい凸レンズ１６６０とがそれらの光軸を合致させ互いに向かい合う面が接合されて構成されている。
凹レンズ１６５０は、凹面状の第１レンズ面１６５２と、第１レンズ面１６５２と反対側に位置し凸レンズ１６６０が接合される凹面状の第２レンズ面１６５４とを有し、外周部は円筒面１６５６で形成されている。
第１、第２レンズ面１６５２、１６５４の外周部で、凹レンズ１６５０と凸レンズ１６６０が接合された状態で凸レンズ１６６０の半径方向外側に位置する箇所に環状の端面１６５２Ａ、１６５４Ａがそれぞれ形成され、各端面１６５２Ａ，１６５４Ａは凹レンズ１６５０の光軸と直交する平面上を延在している。
そして、第２レンズ面１６５２の端面１６５４Ａは凸レンズ１６６０の円筒面１６６６に臨んでいる。
第１レンズ面１６５２の端面１６５２Ａの外縁は面取りされており環状の円錐面１６５２Ｂとして形成されている。 First, the second group lens 16 will be described.
As shown in FIG. 42, the second group lens 16 includes a cemented lens 16A and a lens 16B.
The cemented lens 16A is configured by a concave lens 1650 and a convex lens 1660 having an outer diameter smaller than that of the concave lens 1650 being bonded to each other so that their optical axes coincide with each other.
The concave lens 1650 includes a concave first lens surface 1652 and a concave second lens surface 1654 which is located on the opposite side of the first lens surface 1652 and to which the convex lens 1660 is joined. It is formed with.
At the outer peripheral portions of the first and second lens surfaces 1652 and 1654, annular end surfaces 1652A and 1654A are formed at locations positioned radially outward of the convex lens 1660 with the concave lens 1650 and the convex lens 1660 joined, respectively. 1652A and 1654A extend on a plane orthogonal to the optical axis of the concave lens 1650.
The end surface 1654A of the second lens surface 1652 faces the cylindrical surface 1666 of the convex lens 1660.
The outer edge of the end surface 1652A of the first lens surface 1652 is chamfered to form an annular conical surface 1652B.

凸レンズ１６６０は、凹レンズ１６５０に接合される凸面状の第１レンズ面１６６２と、第１レンズ面１６６２と反対側に位置する第２レンズ面１６６４とを有し、外周部は円筒面１６６６で形成されている。
レンズ１６Ｂは、接合レンズ１６Ａとは別体であり、レンズ１６Ｂは、凸レンズ１６６０に対向する平面状の第１レンズ面１６７２と、第１レンズ面１６７２と反対側に位置する凸面状の第２レンズ面１６７４と、外周部とを有し、外周部は円筒面１６７６で形成されている。 The convex lens 1660 has a convex first lens surface 1662 bonded to the concave lens 1650 and a second lens surface 1664 located on the opposite side of the first lens surface 1662, and an outer peripheral portion is formed by a cylindrical surface 1666. ing.
The lens 16B is a separate body from the cemented lens 16A, and the lens 16B includes a planar first lens surface 1672 facing the convex lens 1660 and a convex second lens positioned on the opposite side of the first lens surface 1672. It has a surface 1674 and an outer peripheral portion, and the outer peripheral portion is formed by a cylindrical surface 1676.

次に第２レンズ保持枠１６０２について説明する。
図４２、図４３に示すように、第２レンズ保持枠１６０２の前記環板部１６０６の中央には、撮像素子１４０側に臨ませて筒状壁部１６３０が形成され、被写体側に臨ませて筒状壁部１６４０が形成されている。
筒状壁部１６３０の内周部は、凸レンズ１６６０の円筒面１６６６の外径よりも大きい内径の内周面１６３０Ａで形成されている。
筒状壁部１６３０の外周部は、凹レンズ１６５０の円筒面１６５６の外径とほぼ同じ寸法の外径の外周面１６３０Ｂで形成されている。
筒状壁部１６３０の先端部には、軸方向（光軸方向）と直交する平面上を延在する先端面１６３４が環状に形成されている。本実施例では、先端面１６３０の外径と凹レンズ１６５０の端面１６５４Ａの外径はほぼ等しい寸法で形成されている。
筒状壁部１６３０の周方向に等間隔をおいた複数箇所（本実施例では３箇所）には、接着剤充填用切り欠き１６３２が筒状壁部１６３０の半径方向に貫通形成され、各接着剤充填用切り欠き１６３２は先端面１６３４に開放されている。言い換えると、接着剤充填用切り欠き１６３２は、筒状壁部１６３０の外周面１６３０Ｂに連通され筒状壁部１６３０の先端面１６３４に開放状に形成されている。
筒状壁部１６４０の内周部は、レンズ１６Ｂの円筒面１６７６の外径よりも僅かに大きい内径の内周面１６４０Ａで形成され、内周面１６４０Ａには、周方向に等間隔をおいて複数の接着剤充填用凹部１６４２が形成され、各接着剤充填用凹部１６４２は筒状壁部１６４０の先端面に開放されている。 Next, the second lens holding frame 1602 will be described.
As shown in FIGS. 42 and 43, a cylindrical wall portion 1630 is formed at the center of the ring plate portion 1606 of the second lens holding frame 1602 so as to face the image sensor 140 side, and face the subject side. A cylindrical wall portion 1640 is formed.
The inner peripheral portion of the cylindrical wall portion 1630 is formed by an inner peripheral surface 1630A having an inner diameter larger than the outer diameter of the cylindrical surface 1666 of the convex lens 1660.
The outer peripheral portion of the cylindrical wall portion 1630 is formed by an outer peripheral surface 1630B having an outer diameter substantially the same as the outer diameter of the cylindrical surface 1656 of the concave lens 1650.
A distal end surface 1634 extending in a plane orthogonal to the axial direction (optical axis direction) is formed in an annular shape at the distal end of the cylindrical wall portion 1630. In the present embodiment, the outer diameter of the front end surface 1630 and the outer diameter of the end surface 1654A of the concave lens 1650 are formed with substantially the same dimensions.
At a plurality of locations (three locations in this embodiment) that are equally spaced in the circumferential direction of the cylindrical wall portion 1630, adhesive filling notches 1632 are formed penetrating in the radial direction of the cylindrical wall portion 1630. The agent filling notch 1632 is open to the distal end surface 1634. In other words, the adhesive filling notch 1632 communicates with the outer peripheral surface 1630B of the cylindrical wall portion 1630 and is formed in an open shape on the distal end surface 1634 of the cylindrical wall portion 1630.
The inner peripheral portion of the cylindrical wall portion 1640 is formed by an inner peripheral surface 1640A having an inner diameter slightly larger than the outer diameter of the cylindrical surface 1676 of the lens 16B, and the inner peripheral surface 1640A is equally spaced in the circumferential direction. A plurality of adhesive filling recesses 1642 are formed, and each adhesive filling recess 1642 is open to the distal end surface of the cylindrical wall portion 1640.

次に、２群レンズ１６および第２レンズ保持枠１６０２の組み立てについて説明する。
まず、レンズ１６Ｂを筒状壁部１６４０の内周面１６４０Ａに挿入し、各接着剤充填用凹部１６４２に紫外線硬化型接着剤を充填し、紫外線を照射することで接着剤を硬化させレンズ１６Ｂを筒状壁部１６４０に固定する。すなわち、レンズ１６Ｂを第２レンズ保持枠１６０２に固定する。
次に、不図示の調整治具上に第２レンズ保持枠１６０２を固定し、図４４に示すように、接合レンズ１６Ａの凸レンズ１６６０を第２レンズ枠１６０２の筒状壁部１６３０の内周面１６３０Ａに臨ませ、凸レンズ１６６０を筒状壁部１６３０の内周面１６３０Ａに挿入し、第２レンズ面１６５４の端面１６５４Ａを筒状壁部１６３０の先端面１６３４に載置する。
なお、この状態で、凸レンズ１６６０の外周面１６３０Ｂと筒状壁部１６３０の内周面１６３０Ａとの間には環状の隙間が確保されている。
次に、図４６に示すように、接合レンズ１６Ａの円錐面１６５２Ｂの周方向に間隔をおいた３箇所に前記調整治具のピンＪをそれぞれ押し当て、第２レンズ面１６５４の端面１６５４Ａを筒状壁部１６３０の先端面１６３４に当て付けた状態で各ピンＪの突出量を制御する。これにより、接合レンズ１６Ａをその光軸と直交する方向に動かし接合レンズ１６Ａの光軸をレンズ１６Ｂの光軸と合致させる。
接合レンズ１６Ａの光軸と接合レンズ１６Ａの光軸が合致されたならば、図４５に示すように、接着剤供給用のディスペンサＤの針から各接着剤充填用切り欠き１６３２内に紫外線硬化型接着剤を充填する。これにより各接着剤充填用切り欠き１６３２内において、紫外線硬化型接着剤が第２レンズ面１６５４の端面１６５４Ａに付着する。
次いで、紫外線ランプＬから各接着剤充填用切り欠き１６３２内に充填された紫外線硬化型接着剤に紫外線を照射して硬化させる。これにより、第２レンズ面１６５４の端面１６５４Ａが筒状壁部１６３０の先端面１６３４に取着され固定される。 Next, assembly of the second group lens 16 and the second lens holding frame 1602 will be described.
First, the lens 16B is inserted into the inner peripheral surface 1640A of the cylindrical wall portion 1640, each adhesive filling concave portion 1642 is filled with an ultraviolet curable adhesive, and the adhesive is cured by irradiating ultraviolet rays so that the lens 16B is Fix to the cylindrical wall 1640. That is, the lens 16B is fixed to the second lens holding frame 1602.
Next, the second lens holding frame 1602 is fixed on an adjustment jig (not shown), and the convex lens 1660 of the cemented lens 16A is connected to the inner peripheral surface of the cylindrical wall portion 1630 of the second lens frame 1602, as shown in FIG. The convex lens 1660 is inserted into the inner peripheral surface 1630A of the cylindrical wall portion 1630 so as to face 1630A, and the end surface 1654A of the second lens surface 1654 is placed on the distal end surface 1634 of the cylindrical wall portion 1630.
In this state, an annular gap is secured between the outer peripheral surface 1630B of the convex lens 1660 and the inner peripheral surface 1630A of the cylindrical wall portion 1630.
Next, as shown in FIG. 46, the pin J of the adjusting jig is pressed against three locations spaced apart in the circumferential direction of the conical surface 1652B of the cemented lens 16A, and the end surface 1654A of the second lens surface 1654 is cylindrical. The protruding amount of each pin J is controlled in a state where it is applied to the tip surface 1634 of the wall 1630. As a result, the cemented lens 16A is moved in a direction perpendicular to the optical axis thereof so that the optical axis of the cemented lens 16A matches the optical axis of the lens 16B.
When the optical axis of the cemented lens 16A and the optical axis of the cemented lens 16A are matched, as shown in FIG. 45, the UV curable type is inserted into each adhesive filling notch 1632 from the needle of the dispenser D for supplying the adhesive. Fill with adhesive. As a result, the ultraviolet curable adhesive adheres to the end surface 1654 A of the second lens surface 1654 in each adhesive filling notch 1632.
Next, the ultraviolet curable adhesive filled in each adhesive filling notch 1632 is irradiated with ultraviolet rays from the ultraviolet lamp L to be cured. As a result, the end surface 1654A of the second lens surface 1654 is attached and fixed to the distal end surface 1634 of the cylindrical wall portion 1630.

本実施例によれば、凸レンズ１６６０の外周面は凹レンズ１６５０の外径よりも小さい直径の円筒面１６６６で形成され、凹レンズ１６５０は、凸レンズ１６６０の半径方向の外側に位置して凸レンズ１６６０の外周部に臨む環状の端面１６５４Ａを有し、第２レンズ保持枠１６０２に、凸レンズ１６６０の円筒面１６６６の外径よりも大きい内周面１６３０Ａを有する筒状壁部１６３０が突出形成され、筒状壁部１６３０の周方向に間隔をおいた複数箇所に、筒状壁部１６３０の外周面１６３０Ｂに連通され筒状壁部１６３０の先端面１６３４に開放状の接着剤充填用切り欠き１６３２が設けられ、接合レンズ１６Ａは、凸レンズ１６６０が筒状壁部１６３０に挿入され、凹レンズ１６５０の環状の端面１６５４Ａが筒状壁部１６３０の先端面１３４に当接され、接着剤充填用切り欠き１６３２に充填された接着剤により環状の端面１６５４Ａが筒状壁部１６３０に取着されている。
したがって、従来と異なり、接合レンズ１６Ａを構成する凹レンズ１６５０の外周部の周方向および軸方向の全域に沿ったスペースは開放され、第２レンズ保持枠１６０２の筒状壁部１６３０によって占有されていないので、その分のスペースにレンズ鏡筒１０を構成する他の部材や部品（例えば図３１に示す電装部１９など）を配置することができ、レンズ鏡筒１０の外形寸法（直径方向の寸法および光軸方向の寸法）を縮小し、ひいては撮像装置１００の小型化を図る上で有利となる。
また、本実施例では、筒状壁部１６３０の先端面１６３０の外径と凹レンズ１６５０の端面１６５４Ａの外径はほぼ等しい寸法で形成されているので、筒状壁部１６３０の先端面１６３０と凹レンズ１６５０の端面１６５４Ａとが重ね合わされる部分の面積を確保する上で有利となり、凹レンズ１６５０と筒状壁部１６３０との接着強度、すなわち接合レンズ１６Ａと第２レンズ枠１６０２との接着強度を確保する上で有利となる。 According to the present embodiment, the outer peripheral surface of the convex lens 1660 is formed by a cylindrical surface 1666 having a diameter smaller than the outer diameter of the concave lens 1650, and the concave lens 1650 is positioned on the outer side in the radial direction of the convex lens 1660. A cylindrical wall portion 1630 having an inner peripheral surface 1630A larger than the outer diameter of the cylindrical surface 1666 of the convex lens 1660 is formed on the second lens holding frame 1602 so as to protrude from the second lens holding frame 1602. At a plurality of locations spaced in the circumferential direction of 1630, open adhesive filling notches 1632 are provided on the distal end surface 1634 of the cylindrical wall portion 1630 so as to communicate with the outer peripheral surface 1630 B of the cylindrical wall portion 1630. In the lens 16A, the convex lens 1660 is inserted into the cylindrical wall portion 1630, and the annular end surface 1654A of the concave lens 1650 is the tip of the cylindrical wall portion 1630. In contact with the surface 134, the annular end face 1654A is attached to the cylindrical wall portion 1630 with an adhesive bonding agent filled in the filling notches 1632.
Therefore, unlike the conventional case, the space along the entire circumferential direction and the axial direction of the outer peripheral portion of the concave lens 1650 constituting the cemented lens 16A is opened and is not occupied by the cylindrical wall portion 1630 of the second lens holding frame 1602. Therefore, other members and parts (for example, the electrical component 19 shown in FIG. 31) constituting the lens barrel 10 can be arranged in the space, and the outer dimensions (diameter direction dimensions and the dimension of the lens barrel 10) can be arranged. This is advantageous in reducing the size in the optical axis direction and, in turn, reducing the size of the imaging apparatus 100.
Further, in this embodiment, the outer diameter of the distal end surface 1630 of the cylindrical wall portion 1630 and the outer diameter of the end surface 1654A of the concave lens 1650 are formed with substantially the same size, so the distal end surface 1630 of the cylindrical wall portion 1630 and the concave lens This is advantageous in securing the area of the portion where the end surface 1654A of the 1650 is overlapped, and ensures the adhesive strength between the concave lens 1650 and the cylindrical wall portion 1630, that is, the adhesive strength between the cemented lens 16A and the second lens frame 1602. This is advantageous.

なお、本実施例では、各接着剤充填用切り欠き１６３２が筒状壁部１６３０の半径方向に貫通形成され、各接着剤充填用切り欠き１６３２が先端面１６３４に開放されている場合について説明したが、各接着剤充填用切り欠き１６３２は筒状壁部１６３０の外周面１６３０Ｂに連通され筒状壁部１６３０の先端面１６３４に開放状に形成されていればよい。例えば、筒状壁部１６３０の外周面１６３０Ｂから接着剤充填用切り欠き１６３２に連通する接着剤充填用孔を設け、この接着剤充填用孔から接着剤充填用切り欠きに接着剤を充填するようにしてもよい。
また、本実施例では、撮像装置としてデジタルスチルカメラを用いて説明したが、本発明は、ビデオカメラ、その他種々の撮像装置に適用可能である。 In the present embodiment, the case where each adhesive filling notch 1632 is formed penetrating in the radial direction of the cylindrical wall portion 1630 and each adhesive filling notch 1632 is opened to the front end surface 1634 has been described. However, each of the adhesive filling cutouts 1632 only needs to communicate with the outer peripheral surface 1630B of the cylindrical wall portion 1630 and be formed in an open shape on the distal end surface 1634 of the cylindrical wall portion 1630. For example, an adhesive filling hole communicating from the outer peripheral surface 1630B of the cylindrical wall portion 1630 to the adhesive filling notch 1632 is provided, and the adhesive filling notch is filled with the adhesive from the adhesive filling hole. It may be.
In this embodiment, a digital still camera is used as the imaging device. However, the present invention can be applied to a video camera and other various imaging devices.

実施例１の撮像装置を前方から見た斜視図である。It is the perspective view which looked at the imaging device of Example 1 from the front. 実施例１の撮像装置を後方から見た斜視図である。It is the perspective view which looked at the imaging device of Example 1 from back. 実施例１の撮像装置の構成を示すブロック図である。1 is a block diagram illustrating a configuration of an imaging apparatus according to Embodiment 1. FIG. 鏡筒１０の状態を説明する斜視図で、（Ａ）が不使用時のレンズ収納状態すなわち沈胴状態を示し、（Ｂ）が使用時のレンズ突出状態（広角状態あるいは望遠状態）を示す。FIG. 5A is a perspective view illustrating a state of the lens barrel 10, in which FIG. 9A illustrates a lens storage state when not in use, that is, a retracted state, and FIG. 9B illustrates a lens protruding state (wide angle state or telephoto state) when in use. 沈胴状態にある鏡筒１０の断面図である。It is sectional drawing of the lens-barrel 10 in a retracted state. 広角状態にある鏡筒１０の断面図である。It is sectional drawing of the lens-barrel 10 in a wide angle state. 望遠状態にある鏡筒１０の断面図である。It is sectional drawing of the lens-barrel 10 in a telephoto state. 鏡筒１０を前方から見た分解斜視図である。It is the disassembled perspective view which looked at the lens-barrel 10 from the front. 図８のうち第３レンズ保持枠、ベース、フレキシブル基板を示す分解斜視図である。It is a disassembled perspective view which shows a 3rd lens holding frame, a base, and a flexible substrate among FIG. 図８のうち第１レンズ保持枠、第２レンズ保持枠、自動露光装置を示す分解斜視図である。It is a disassembled perspective view which shows the 1st lens holding frame, the 2nd lens holding frame, and an automatic exposure apparatus among FIG. 図８のうち固定環、カム環を示す分解斜視図である。It is a disassembled perspective view which shows a fixed ring and a cam ring among FIG. 第１レンズ保持枠、第２レンズ保持枠、ベースを示す分解斜視図である。It is a disassembled perspective view which shows a 1st lens holding frame, a 2nd lens holding frame, and a base. 図１２の組み立て図である。It is an assembly drawing of FIG. カム環、第１レンズ保持枠、第２レンズ保持枠、ベースを示す分解斜視図である。It is a disassembled perspective view which shows a cam ring, a 1st lens holding frame, a 2nd lens holding frame, and a base. 図１４の組み立て図である。FIG. 15 is an assembly diagram of FIG. 14. 図１６は鏡筒１０を後方から見た分解斜視図、FIG. 16 is an exploded perspective view of the lens barrel 10 as viewed from the rear. 図１６のうち第３レンズ保持枠、ベース、フレキシブル基板を示す分解斜視図である。It is a disassembled perspective view which shows a 3rd lens holding frame, a base, and a flexible substrate among FIG. 図１６のうち第１レンズ保持枠、第２レンズ保持枠、自動露光装置、第３レンズ保持枠を示す分解斜視図である。It is a disassembled perspective view which shows a 1st lens holding frame, a 2nd lens holding frame, an automatic exposure apparatus, and a 3rd lens holding frame among FIG. 図１６のうち固定環、カム環、第１レンズ保持枠を示す分解斜視図である。It is a disassembled perspective view which shows a fixed ring, a cam ring, and a 1st lens holding frame among FIG. 第１レンズ保持枠、第２レンズ保持枠、ベースを示す分解斜視図である。It is a disassembled perspective view which shows a 1st lens holding frame, a 2nd lens holding frame, and a base. 固定環、カム環、第１レンズ保持枠、第２レンズ保持枠、第３レンズ保持枠、フレキシブル基板の組み立て図である。It is an assembly drawing of a fixed ring, a cam ring, a first lens holding frame, a second lens holding frame, a third lens holding frame, and a flexible substrate. 第３レンズ保持枠、ベースの分解斜視図である。It is a disassembled perspective view of a 3rd lens holding frame and a base. 図２２の組み立て図である。It is an assembly drawing of FIG. 図２３のＡ矢視図である。It is A arrow line view of FIG. 図２４のＸＸ線断面図である。It is XX sectional drawing of FIG. 第１レンズ保持枠、第２レンズ保持枠、ベースが組み立てられた状態で光軸と平行な面で破断した状態を示す斜視図である。It is a perspective view which shows the state fractured | ruptured in the surface parallel to an optical axis in the state which assembled the 1st lens holding frame, the 2nd lens holding frame, and the base. レンズ鏡筒を光軸と平行な面で破断した断面図である。It is sectional drawing which fractured | ruptured the lens-barrel in the surface parallel to an optical axis. レンズ鏡筒を光軸と平行な面で破断した断面図である。It is sectional drawing which fractured | ruptured the lens-barrel in the surface parallel to an optical axis. 図２８のＹＹ線断面図である。It is the YY sectional view taken on the line of FIG. （Ａ）、（Ｂ）はシャッタ用フレキシブル基板８０の斜視図である。(A), (B) is a perspective view of the flexible substrate 80 for shutters. 沈胴状態におけるシャッタ用フレキシブル基板８０の状態を示す鏡筒の断面図、Sectional drawing of the lens-barrel which shows the state of the flexible substrate 80 for shutters in a retracted state, 広角状態におけるシャッタ用フレキシブル基板８０の状態を示す鏡筒の断面図である。It is sectional drawing of the lens-barrel which shows the state of the flexible substrate 80 for shutters in a wide angle state. 望遠状態におけるシャッタ用フレキシブル基板８０の状態を示す鏡筒の断面図である。It is sectional drawing of the lens-barrel which shows the state of the flexible substrate 80 for shutters in a telephoto state. （Ａ）は沈胴状態におけるシャッタ用フレキシブル基板８０の状態を示す説明図、（Ｂ）は広角状態におけるシャッタ用フレキシブル基板８０の状態を示す説明図である。(A) is explanatory drawing which shows the state of the flexible substrate 80 for shutters in a retracted state, (B) is explanatory drawing which shows the state of the flexible substrate 80 for shutters in a wide angle state. シャッタ用フレキシブル基板８０の引き回しを示す斜視図である。It is a perspective view which shows the routing of the flexible substrate 80 for shutters. シャッタ用フレキシブル基板８０が挿通されるベース１２部分の平面図である。It is a top view of the base 12 part by which the flexible substrate 80 for shutters is penetrated. メインフレキシブル基板６０、コイル用フレキシブル基板４００８、シャッタ用フレキシブル基板８０の位置関係を示す平面図である。4 is a plan view showing a positional relationship among a main flexible substrate 60, a coil flexible substrate 4008, and a shutter flexible substrate 80. FIG. 図３７のＡＡ線断面図であり、（Ａ）はメインフレキシブル基板６０の起伏面部の折り曲げ状態を示す図、（Ｂ）はメインフレキシブル基板６０の起伏面部の平坦状態を示す図である。37 is a cross-sectional view taken along line AA in FIG. 37, (A) is a diagram illustrating a bent state of the undulating surface portion of the main flexible substrate 60, and (B) is a diagram illustrating a flat state of the undulating surface portion of the main flexible substrate 60. メインフレキシブル基板６０の起伏面部の折り曲げ状態を示す斜視図である。4 is a perspective view showing a bent state of a undulating surface portion of a main flexible substrate 60. FIG. メインフレキシブル基板６０の起伏面部の平坦状態を示す斜視図である。4 is a perspective view showing a flat state of the undulating surface portion of the main flexible substrate 60. FIG. 第１、第２の半田付け端子部が半田付けされた状態を示す斜視図である。It is a perspective view which shows the state in which the 1st, 2nd soldering terminal part was soldered. ２群レンズ１６と第２レンズ保持枠１６０２の断面図である。4 is a cross-sectional view of a second group lens 16 and a second lens holding frame 1602. FIG. 第２レンズ枠１６０２の斜視図である。6 is a perspective view of a second lens frame 1602. FIG. ２群レンズ１６と第２レンズ保持枠１６０２の組み立て説明図である。FIG. 8 is an assembly explanatory diagram of the second group lens 16 and the second lens holding frame 1602. ２群レンズ１６と第２レンズ保持枠１６０２の組み立て説明図である。FIG. 8 is an assembly explanatory diagram of the second group lens 16 and the second lens holding frame 1602. ２群レンズ１６の光軸合わせ調整の説明図である。It is explanatory drawing of the optical axis alignment adjustment of the 2 group lens.

符号の説明Explanation of symbols

１００……撮像装置、１０……鏡筒、１６Ａ……接合レンズ、１６０２……第２レンズ保持枠、１６３０Ａ……内周面、１６３０……筒状壁部、１６３０Ｂ……外周面、１６３２……接着剤充填用切り欠き、１６３４……先端面、１６５０……凹レンズ、１６５４Ａ……環状の端面、１６６０……凸レンズ、１６６６……円筒面。   DESCRIPTION OF SYMBOLS 100 ... Imaging device, 10 ... Lens barrel, 16A ... Joint lens, 1602 ... 2nd lens holding frame, 1630A ... Inner peripheral surface, 1630 ... Cylindrical wall part, 1630B ... Outer peripheral surface, 1632 ... ... notch for filling adhesive, 1634 ... tip face, 1650 ... concave lens, 1654A ... annular end face, 1660 ... convex lens, 1666 ... cylindrical face.

Claims (10)

凹レンズと凸レンズがそれらの光軸を合致させた状態でそれらの面が合わされて接合された接合レンズを保持するレンズ保持枠を有するレンズ鏡筒であって、
前記凸レンズの外周面は前記凹レンズの外径よりも小さい直径の円筒面で形成され、
前記凹レンズは、前記凸レンズの半径方向の外側に位置して前記凸レンズの外周部に臨む環状の端面を有し、
前記レンズ保持枠に、前記円筒面の外径よりも大きい内周面を有する筒状壁部が突出形成され、
前記筒状壁部の周方向に間隔をおいた複数箇所に、前記筒状壁部の外周面に連通され前記筒状壁部の先端面に開放状の接着剤充填用切り欠きが設けられ、
前記接合レンズは、前記凸レンズが前記筒状壁部に挿入され、前記凹レンズの環状の端面が前記筒状壁部の先端面に当接され、前記接着剤充填用切り欠きに充填された接着剤により前記環状の端面が前記筒状壁部に取着されている、
ことを特徴とするレンズ鏡筒。 A lens barrel having a lens holding frame that holds a cemented lens in which the concave lens and the convex lens are joined with their surfaces aligned in a state in which their optical axes coincide with each other,
The outer peripheral surface of the convex lens is formed of a cylindrical surface having a diameter smaller than the outer diameter of the concave lens,
The concave lens has an annular end face that faces the outer peripheral portion of the convex lens and is located outside the convex lens in the radial direction;
A cylindrical wall portion having an inner peripheral surface larger than the outer diameter of the cylindrical surface is formed on the lens holding frame so as to protrude.
At a plurality of locations spaced in the circumferential direction of the cylindrical wall portion, an open adhesive filling notch is provided on the distal end surface of the cylindrical wall portion that is communicated with the outer peripheral surface of the cylindrical wall portion,
In the cemented lens, an adhesive in which the convex lens is inserted into the cylindrical wall portion, an annular end surface of the concave lens is brought into contact with a distal end surface of the cylindrical wall portion, and the adhesive filling notch is filled The annular end face is attached to the cylindrical wall by
A lens barrel characterized by that. 前記凹レンズの環状の端面は前記光軸と直交する平面上に延在して形成さ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 lens barrel according to claim 1, wherein an annular end surface of the concave lens is formed to extend on a plane orthogonal to the optical axis. 前記筒状壁部の先端面は前記光軸と直交する平面上に延在して形成さ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 lens barrel according to claim 1, wherein a distal end surface of the cylindrical wall portion is formed to extend on a plane orthogonal to the optical axis. 前記接着剤充填用切り欠きは、前記筒状壁部の半径方向に貫通して形成され、前記接着剤充填用切り欠きは、前記筒状壁部の先端および前記筒状壁部の半径方向に開放さ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 adhesive filling notch is formed so as to penetrate in a radial direction of the cylindrical wall portion, and the adhesive filling notch is formed in a radial direction of the distal end of the cylindrical wall portion and the cylindrical wall portion. The lens barrel according to claim 1, wherein the lens barrel is open. 前記凹レンズの環状の端面の外径と、前記筒状壁部の先端面の外径は等しい寸法で形成されていることを特徴とする請求項１記載のレンズ鏡筒。   2. The lens barrel according to claim 1, wherein the outer diameter of the annular end surface of the concave lens and the outer diameter of the tip surface of the cylindrical wall portion are formed to be equal. 被写体像を導くレンズと、このレンズによって導かれた被写体像を撮像する撮像素子とを有するレンズ鏡筒を備えた撮像装置であって、
前記レンズは、凹レンズと凸レンズがそれらの光軸を合致させた状態でそれらの面が合わされて接合された接合レンズであり、
前記レンズ鏡筒は、
前記接合レンズを保持するレンズ保持枠を有し、
前記凸レンズの外周面は前記凹レンズの外径よりも小さい直径の円筒面で形成され、
前記凹レンズは、前記凸レンズの半径方向の外側に位置して前記凸レンズの外周部に臨む環状の端面を有し、
前記レンズ保持枠に、前記円筒面の外径よりも大きい内周面を有する筒状壁部が突出形成され、
前記筒状壁部の周方向に間隔をおいた複数箇所に、前記筒状壁部の外周面に連通され前記筒状壁部の先端面に開放状の接着剤充填用切り欠きが設けられ、
前記接合レンズは、前記凸レンズが前記筒状壁部に挿入され、前記凹レンズの環状の端面が前記筒状壁部の先端面に当接され、前記接着剤充填用切り欠きに充填された接着剤により前記環状の端面が前記筒状壁部に取着されている、
ことを特徴とする撮像装置。 An imaging apparatus including a lens barrel having a lens that guides a subject image and an imaging element that captures the subject image guided by the lens,
The lens is a cemented lens in which the concave lens and the convex lens are joined by joining their surfaces in a state where their optical axes are matched.
The lens barrel is
A lens holding frame for holding the cemented lens;
The outer peripheral surface of the convex lens is formed of a cylindrical surface having a diameter smaller than the outer diameter of the concave lens,
The concave lens has an annular end face that faces the outer peripheral portion of the convex lens and is located outside the convex lens in the radial direction;
A cylindrical wall portion having an inner peripheral surface larger than the outer diameter of the cylindrical surface is formed on the lens holding frame so as to protrude.
In a plurality of locations spaced in the circumferential direction of the cylindrical wall portion, an open adhesive filling notch is provided on the distal end surface of the cylindrical wall portion, which is communicated with the outer peripheral surface of the cylindrical wall portion,
In the cemented lens, an adhesive in which the convex lens is inserted into the cylindrical wall portion, an annular end surface of the concave lens is brought into contact with a distal end surface of the cylindrical wall portion, and the adhesive filling notch is filled The annular end face is attached to the cylindrical wall by
An imaging apparatus characterized by that. 前記凹レンズの環状の端面は前記光軸と直交する平面上に延在して形成されていることを特徴とする請求項６記載の撮像装置。   The imaging device according to claim 6, wherein an annular end surface of the concave lens is formed to extend on a plane orthogonal to the optical axis. 前記筒状壁部の先端面は前記光軸と直交する平面上に延在して形成されていることを特徴とする請求項６記載の撮像装置。   The imaging apparatus according to claim 6, wherein a distal end surface of the cylindrical wall portion is formed to extend on a plane orthogonal to the optical axis. 前記接着剤充填用切り欠きは、前記筒状壁部の半径方向に貫通して形成され、前記接着剤充填用切り欠きは、前記筒状壁部の先端および前記筒状壁部の半径方向に開放されていることを特徴とする請求項６記載の撮像装置。   The adhesive filling notch is formed so as to penetrate in a radial direction of the cylindrical wall portion, and the adhesive filling notch is formed in a radial direction of the distal end of the cylindrical wall portion and the cylindrical wall portion. The imaging apparatus according to claim 6, wherein the imaging apparatus is open. 前記凹レンズの環状の端面の外径と、前記筒状壁部の先端面の外径はほぼ等しい寸法で形成されていることを特徴とする請求項６記載の撮像装置。   The imaging apparatus according to claim 6, wherein the outer diameter of the annular end surface of the concave lens and the outer diameter of the distal end surface of the cylindrical wall portion are substantially equal.
JP2004247818A 2004-08-27 2004-08-27 Lens barrel and imaging device Expired - Fee Related JP4671097B2 (en)

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JP2001059929A (en) * 1999-08-24 2001-03-06 Olympus Optical Co Ltd Method for fitting lens to mirror frame and device thereof
JP2002095626A (en) * 2000-09-22 2002-04-02 Olympus Optical Co Ltd Endoscope
JP2003066300A (en) * 2001-08-29 2003-03-05 Sony Corp Device for manufacturing objective lens and method for manufacturing objective lens
JP2004157241A (en) * 2002-11-05 2004-06-03 Tateyama R & D:Kk Panoramic imaging lens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10284803A (en) * 1997-04-07 1998-10-23 Ricoh Co Ltd Light source device
JPH10333007A (en) * 1997-05-30 1998-12-18 Konica Corp Resin sealed optical system and production of resin sealed optical system
JP2001059929A (en) * 1999-08-24 2001-03-06 Olympus Optical Co Ltd Method for fitting lens to mirror frame and device thereof
JP2002095626A (en) * 2000-09-22 2002-04-02 Olympus Optical Co Ltd Endoscope
JP2003066300A (en) * 2001-08-29 2003-03-05 Sony Corp Device for manufacturing objective lens and method for manufacturing objective lens
JP2004157241A (en) * 2002-11-05 2004-06-03 Tateyama R & D:Kk Panoramic imaging lens

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