JP6024941B2 - Lens fixing mechanism and camera device having the same - Google Patents

Lens fixing mechanism and camera device having the same Download PDF

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JP6024941B2
JP6024941B2 JP2012009750A JP2012009750A JP6024941B2 JP 6024941 B2 JP6024941 B2 JP 6024941B2 JP 2012009750 A JP2012009750 A JP 2012009750A JP 2012009750 A JP2012009750 A JP 2012009750A JP 6024941 B2 JP6024941 B2 JP 6024941B2
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lens barrel
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fitting hole
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良隆 壷井
良隆 壷井
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Fujitsu General Ltd
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本発明は、車載カメラやボードカメラなどの撮像素子とレンズユニットのフォーカス調整とレンズホルダへの固着を簡単に、かつ、確実にできるようにしたレンズの固着機構及びそれを備えたカメラ装置に関するものである。   BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens fixing mechanism capable of easily and surely fixing the focus of an image pickup device and a lens unit, such as an in-vehicle camera and a board camera, and fixing to a lens holder, and a camera apparatus including the same. It is.

従来、車載カメラやボードカメラにおいて、レンズホルダの交換時やレンズホルダのないカメラを製造する場合に、レンズホルダの取り付け取り外しを容易にする発明が提案されている（特許文献１）。
これは、図５において、基板１８の上にＣＣＤなどの撮像素子１７が載置され、ＣＣＤカバー１５が固定ねじ１９にて基板１８に固定され、ＣＣＤカバー１５には、レンズホルダ１３がこのレンズホルダ１３のねじ溝１４とＣＣＤカバー１５のねじ山１６で螺合されている。レンズ１０を有するレンズ鏡筒１１は、外周のねじ山１２が前記レンズホルダ１３の内周のねじ溝１４に螺合される。レンズホルダ１３を交換する場合には、レンズホルダ１３を回してＣＣＤカバー１５から取り外し、他のレンズホルダ１３と交換する。レンズ１０と撮像素子１７のフォーカス調整は、レンズ鏡筒１１を回転させ上下に移動させることにより撮像素子１７との距離を調整することで行う。 2. Description of the Related Art Conventionally, in an in-vehicle camera or a board camera, there has been proposed an invention that facilitates attachment / detachment of a lens holder when the lens holder is replaced or when a camera without a lens holder is manufactured (Patent Document 1).
In FIG. 5, an image pickup device 17 such as a CCD is placed on a substrate 18, and a CCD cover 15 is fixed to the substrate 18 with a fixing screw 19, and a lens holder 13 is attached to this lens on the CCD cover 15. The screw groove 14 of the holder 13 and the screw thread 16 of the CCD cover 15 are screwed together. In the lens barrel 11 having the lens 10, the outer peripheral thread 12 is screwed into the inner peripheral thread groove 14 of the lens holder 13. When replacing the lens holder 13, the lens holder 13 is turned and removed from the CCD cover 15, and replaced with another lens holder 13. The focus adjustment between the lens 10 and the image sensor 17 is performed by adjusting the distance from the image sensor 17 by rotating and moving the lens barrel 11 up and down.

また、光学ディスク記憶装置におけるレンズ鏡筒１１をレンズホルダ１３にフォーカス調整をしつつ固定する発明が提案されている（特許文献２）。
これは、図６（ａ）〜（ｆ）に示されている。（ａ）（ｂ）に示すように、レンズ鏡筒１１の外周に、少なくとも１２０度の間隔で３箇所に突起２０を設けておき、（ｃ）に示すように、レンズホルダ１３の内側の隙間２２に圧入し、フォーカス調整をしつつ固定する。すると、拡大図（ｄ）に示すように、突起２０がレンズホルダ１３の内壁で押しつぶされて変形し固定される。
また、（ｅ）に示すように、レンズホルダ１３の内側の突起２０に対応した位置に溝２１を設けてレンズホルダ１３の内側の溝２１に圧入し、フォーカス調整をしつつ固定する。すると、拡大図（ｆ）に示すように、突起２０がレンズホルダ１３の内側の溝２１で変形し固定されることで、レンズ鏡筒１１が回転することなく押し込み固定される、としている。 Further, an invention has been proposed in which the lens barrel 11 in the optical disk storage device is fixed to the lens holder 13 while adjusting the focus (Patent Document 2).
This is illustrated in FIGS. 6 (a)-(f). (A) As shown in (b), protrusions 20 are provided at three locations at an interval of at least 120 degrees on the outer periphery of the lens barrel 11, and as shown in (c), a gap inside the lens holder 13 is provided. It press-fits into 22 and is fixed while adjusting the focus. Then, as shown in the enlarged view (d), the protrusion 20 is crushed by the inner wall of the lens holder 13 to be deformed and fixed.
Further, as shown in (e), a groove 21 is provided at a position corresponding to the projection 20 on the inner side of the lens holder 13, press-fitted into the groove 21 on the inner side of the lens holder 13, and fixed while adjusting the focus. Then, as shown in the enlarged view (f), the projection 20 is deformed and fixed in the groove 21 inside the lens holder 13 so that the lens barrel 11 is pushed and fixed without rotating.

特開２０００−１１１７７７号公報Japanese Patent Laid-Open No. 2000-1111777 特開２０００−２１５４９５号公報JP 2000-215495 A

特許文献１では、レンズ１０と撮像素子１７のフォーカス調整が、レンズ鏡筒１１をレンズホルダ１３にねじ込み回転させ上下に移動させることで比較的簡単にできるが、レンズ鏡筒１１とレンズホルダ１３との間が固定されていないために、ねじ部分でガタつきが発生し、振動や衝撃により光軸ずれやフォーカスのずれが発生するおそれがあるという問題がある。
また、特許文献２では、レンズ鏡筒１１の突起２０をレンズホルダ１３の内壁に圧入するため、比較的強固に固定できるが、微妙なフォーカスの調整ができない。また、レンズ鏡筒１１を押し込みすぎると、レンズホルダ１３の内部から押し戻さなければならず、押し込みすぎたときの再調整が不可能か、極めて困難であるという問題がある。 In Patent Document 1, the focus adjustment of the lens 10 and the image sensor 17 can be relatively easily performed by screwing and rotating the lens barrel 11 into the lens holder 13 and moving the lens barrel 11 up and down. Since the gap is not fixed, there is a problem that rattling occurs at the screw portion, and there is a possibility that the optical axis shift or focus shift may occur due to vibration or impact.
In Patent Document 2, since the protrusion 20 of the lens barrel 11 is press-fitted into the inner wall of the lens holder 13, it can be fixed relatively firmly, but delicate focus adjustment cannot be performed. Further, if the lens barrel 11 is pushed too much, it must be pushed back from the inside of the lens holder 13, and there is a problem that readjustment when pushed too much is impossible or extremely difficult.

本発明は、レンズユニットと撮像素子とのフォーカス調整及びレンズユニットとレンズホルダへの固着を簡単に、かつ、確実にできるようにしたレンズの固着装置を提供することを目的とするものである。   SUMMARY OF THE INVENTION An object of the present invention is to provide a lens fixing device that can easily and reliably perform focus adjustment between a lens unit and an image pickup device and fixation to a lens unit and a lens holder.

実施例１では、撮像素子３３とレンズホルダ２５とレンズ２３を有するレンズ鏡筒２４とを少なくとも備え、前記レンズホルダ２５に設けたレンズ鏡筒嵌合孔３２に前記レンズ鏡筒２４を取り付けるレンズの固着機構において、前記レンズ鏡筒嵌合孔３２の内壁面に、円弧摺動面２６と、この円弧摺動面２６より突出した係止突起２７を設け、前記レンズ鏡筒２４の外壁面に、所定の間隔をおいて前記円弧摺動面２６に密接して摺動する少なくとも２個以上の摺動案内部２８と、前記レンズ鏡筒２４を前記レンズ鏡筒嵌合孔３２に嵌合してレンズ鏡筒２４を水平回転して前記係止突起２７を圧接して係止する少なくとも２個の以上の係止テーパー面２９を設け、前記レンズ鏡筒嵌合孔３２に前記レンズ鏡筒２４が挿入されたときのレンズ２３の光軸を中心としたときの前記レンズ嵌合孔３２の最小径をａ、最大径をｂ及び同中心から前記係止テーパ面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパ面２９までの径は、前記レンズ鏡筒２４を水平回転して前記係止突起を圧接して係止する回転方向と逆方向に連続して増大させたことを特徴とする。   In the first embodiment, the lens barrel 24 includes at least an imaging device 33, a lens holder 25, and a lens barrel 24 having a lens 23, and the lens barrel 24 is attached to a lens barrel fitting hole 32 provided in the lens holder 25. In the fixing mechanism, an arc slide surface 26 and a locking projection 27 protruding from the arc slide surface 26 are provided on the inner wall surface of the lens barrel fitting hole 32, and the outer wall surface of the lens barrel 24 is provided on the outer wall surface of the lens barrel 24. At least two or more sliding guide portions 28 that slide in close contact with the arc sliding surface 26 at a predetermined interval and the lens barrel 24 are fitted into the lens barrel fitting hole 32. At least two or more locking tapered surfaces 29 for locking and locking the locking projections 27 by horizontally rotating the lens barrel 24 are provided, and the lens barrel 24 is inserted into the lens barrel fitting hole 32. Lens 23 when inserted When the minimum diameter of the lens fitting hole 32 centered on the optical axis is a, the maximum diameter is b, the minimum diameter from the same center to the locking tapered surface is r1, and the maximum diameter is r2, respectively. The size relationship between r1 <a <r2 ≦ b and the diameter from the center to the locking tapered surface 29 is that the lens barrel 24 is rotated horizontally to lock the locking projections against each other. It is characterized by being continuously increased in the direction opposite to the rotation direction.

実施例２では、撮像素子側３３とレンズホルダ２５とレンズ２３を有するレンズ鏡筒２４とを少なくとも備え、前記レンズホルダ２５のレンズ鏡筒嵌合孔３２に前記レンズ鏡筒２４を取り付けるレンズの固着機構において、前記レンズ鏡筒２４の外壁面に、円弧摺動面２６と、この円弧摺動面２６より突出した係止突起２７を設け、前記レンズ鏡筒嵌合孔３２の内壁面に、所定の間隔をおいて前記円弧摺動面２６に密接して摺動する少なくとも２個以上の摺動案内部２８と、前記レンズ鏡筒２４を前記レンズ鏡筒嵌合孔３２に嵌合してレンズ鏡筒２４を水平回転して前記係止突起２７を圧接して係止する少なくとも２個以上の係止テーパー面２９を設け、前記レンズ鏡筒嵌合孔３２に前記レンズ鏡筒２４が挿入されたときのレンズ２３の光軸を中心としたときの前記レンズ嵌合孔３２の最小径をａ、最大径をｂ及び同中心から前記係止テーパ面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパ面２９までの径は、前記レンズ鏡筒２４を水平回転して前記係止突起を圧接して係止する回転方向と同一方向に連続して増大させたことを特徴とする。   In the second embodiment, the lens barrel 24 having at least the imaging element side 33, the lens holder 25, and the lens 23 is provided, and the lens barrel 24 is fixed to the lens barrel fitting hole 32 of the lens holder 25. In the mechanism, an arc sliding surface 26 and a locking projection 27 protruding from the arc sliding surface 26 are provided on the outer wall surface of the lens barrel 24, and a predetermined amount is provided on the inner wall surface of the lens barrel fitting hole 32. The lens barrel 24 is fitted into the lens barrel fitting hole 32 by fitting at least two or more sliding guide portions 28 that slide in close contact with the arc-sliding surface 26 at an interval of the lens. The lens barrel 24 is inserted into the lens barrel fitting hole 32 by providing at least two locking taper surfaces 29 for horizontally rotating the lens barrel 24 to press and lock the locking projections 27. The optical axis of the lens 23 when When the minimum diameter of the lens fitting hole 32 at the center is a, the maximum diameter is b, the minimum diameter from the same center to the locking taper surface is r1, and the maximum diameter is r2, the magnitude relations thereof. R1 <a <r2 ≦ b, and the diameter from the center to the locking taper surface 29 is a rotational direction in which the lens barrel 24 is rotated horizontally to press and lock the locking projections. It is characterized by being continuously increased in the same direction.

複数の円弧摺動面２６は、レンズ２３の光軸を中心とする同一径とすることができる。
前記レンズ鏡筒２４に設けた摺動案内部２８と係止テーパー面２９又は円弧摺動面２６と係止突起２７は、光軸方向に幅をもって形成する。
係止固着に際し、食い込む側の前記係止突起２７を硬質材料とし、食い込まれる側の係止テーパー面２９を前記係止突起２７より軟質材料とする。これらの特徴を有したレンズホルダ２５とレンズ鏡筒２４及び撮像素子３３等からカメラ装置３４が構成される。 The plurality of arc sliding surfaces 26 can have the same diameter with the optical axis of the lens 23 as the center.
The sliding guide 28 and the locking taper surface 29 or the arc sliding surface 26 and the locking projection 27 provided on the lens barrel 24 are formed with a width in the optical axis direction.
At the time of locking and fixing, the locking protrusion 27 on the biting side is made of a hard material, and the locking taper surface 29 on the biting side is made of a softer material than the locking protrusion 27. A camera device 34 includes the lens holder 25, the lens barrel 24, the image sensor 33, and the like having these characteristics.

請求項１記載の発明によれば、
撮像素子とレンズホルダとレンズを有するレンズ鏡筒とを少なくとも備え、前記レンズホルダに設けたレンズ鏡筒嵌合孔に前記レンズ鏡筒を取り付けるレンズの固着方法において、
前記レンズ鏡筒嵌合孔の内壁面に同一径で幅を有する円弧摺動面を設けるとともにこの円弧摺動面より内方に突出した係止突起を設け、
前記レンズ鏡筒の外壁面に、所定の間隔をおいて前記円弧摺動面に密接して摺動する少なくとも２個以上の摺動案内部を幅をもって設け、
ともに幅を有する前記レンズ鏡筒の摺動案内部と前記レンズ鏡筒嵌合孔の円弧摺動面とを前記レンズの光軸が傾くことなく撮像素子の中心と一致した状態を保持したまま挿入して前記レンズ鏡筒と撮像素子との距離を調整してレンズと撮像素子のフォーカスを調整し、
前記レンズ鏡筒を水平回転して前記摺動案内部の頂部から隣接する摺動案内部の立ち下がり部分まで順次径方向に小径となる少なくとも２個以上の係止テーパー面に、前記係止突起を圧接して係止し、
前記レンズ鏡筒嵌合孔に前記レンズ鏡筒が挿入されたときのレンズの光軸を中心としたときの前記レンズ鏡筒嵌合孔の最小径をａ、最大径をｂ及び同中心から前記係止テーパー面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパー面までの径は前記レンズ鏡筒を水平回転して前記係止突起を圧接して係止する回転方向と逆方向に連続して増大させ、前記レンズ鏡筒を水平回転して前記係止突起を前記係止テーパー面に食い込み固定するようにしたことを特徴とするレンズの固着方法としたので、摺動案内部と円弧摺動面の直径が同一で、かつ、摺動案内部と円弧摺動面は幅をもっているため、レンズの光軸は傾くことなく撮像素子の中心と一致した状態を保持したままレンズ鏡筒がレンズホルダに挿入され、レンズ鏡筒と撮像素子との距離を調整してレンズと撮像素子のフォーカスを調整できる。フォーカス調整したら、摺動案内部と円弧摺動面が密接して回動し、回動により係止突起は、係止テーパー面に食い込んで固定され、撮像素子の中心に対するレンズの光軸がずれることなくフォーカス調整し、調整後にレンズ鏡筒をレンズホルダに容易、かつ、確実に固着することができる。
According to invention of Claim 1,
In the fixing method of the lens comprising at least an imaging element, a lens holder, and a lens barrel having a lens, and attaching the lens barrel to a lens barrel fitting hole provided in the lens holder,
An arc sliding surface having the same diameter and width is provided on the inner wall surface of the lens barrel fitting hole, and a locking projection protruding inward from the arc sliding surface is provided,
On the outer wall surface of the lens barrel, at least two or more sliding guide portions that slide in close contact with the arc sliding surface at a predetermined interval are provided with a width ,
Both the sliding guide part of the lens barrel having a width and the arc sliding surface of the lens barrel fitting hole are inserted while maintaining the state where the optical axis of the lens coincides with the center of the image sensor without tilting. Adjusting the distance between the lens barrel and the image sensor to adjust the focus of the lens and the image sensor,
The locking projection is formed on at least two locking taper surfaces having a diameter gradually decreasing from the top of the sliding guide portion to the falling portion of the adjacent sliding guide portion by horizontally rotating the lens barrel. the pressed against the locking,
When the lens barrel is inserted into the lens barrel fitting hole, the minimum diameter of the lens barrel fitting hole when the optical axis of the lens is the center is a, the maximum diameter is b, and the center is the same. When the minimum diameter to the locking taper surface is r1 and the maximum diameter is r2, the magnitude relationship is r1 <a <r2 ≦ b, and the diameter from the center to the locking taper surface is the lens. The lens barrel is rotated horizontally to continuously increase the direction opposite to the rotation direction in which the locking projection is pressed and locked, and the lens barrel is rotated horizontally to move the locking projection to the locking taper surface. Since the lens fixing method is characterized in that the biting is fixed, the diameter of the sliding guide portion and the arc sliding surface is the same, and the sliding guide portion and the arc sliding surface have a width. The optical axis of the lens should be aligned with the center of the image sensor without tilting Lifting the left lens barrel is inserted into the lens holder can be adjusted focus lens and the image pickup device by adjusting the distance between the lens barrel and the image sensor. When the focus is adjusted, the sliding guide portion and the arc sliding surface rotate closely, and the locking projections are fixed by biting into the locking taper surface by the rotation, and the optical axis of the lens deviates from the center of the image sensor. Without adjusting the focus, the lens barrel can be easily and reliably fixed to the lens holder after the adjustment.

請求項２記載の発明によれば、前記レンズホルダの前記レンズ鏡筒嵌合孔の内壁に、前記円弧摺動面と前記係止突起を１対として２対以上を円周方向に等間隔で設け、前記レンズ鏡筒の外壁に、前記摺動案内部と前記係止テーパー面を１対として前記レンズホルダと同様に２対以上を円周方向に等間隔で設けたので、レンズホルダ側の複数個の円弧摺動面に、それぞれ対応するレンズ鏡筒側の摺動案内部が光軸を変位させることなく摺動案内され、レンズホルダ側の複数個の係止突起がそれぞれ対応するレンズ鏡筒側の係止テーパー面に確実に食い込み固定される。   According to the second aspect of the present invention, the arc slide surface and the locking projection are paired on the inner wall of the lens barrel fitting hole of the lens holder, and two or more pairs are equally spaced in the circumferential direction. Since the slide guide portion and the locking taper surface are paired on the outer wall of the lens barrel, two pairs or more are provided at equal intervals in the circumferential direction in the same manner as the lens holder. The corresponding sliding guides on the lens barrel side are slidably guided on the plurality of arc sliding surfaces without displacing the optical axis, and the plurality of locking projections on the lens holder side respectively correspond to the corresponding lens mirrors. It securely bites into the locking taper surface on the cylinder side.

請求項３記載の発明によれば、
撮像素子とレンズホルダとレンズを有するレンズ鏡筒とを少なくとも備え、前記レンズホルダに設けたレンズ鏡筒嵌合孔に前記レンズ鏡筒を取り付けるレンズの固着方法において、
前記レンズ鏡筒の外壁面に同一径で幅を有する円弧摺動面を設けるとともにこの円弧摺動面より外方に突出した係止突起を設け、
前記レンズ鏡筒嵌合孔の内壁面に、所定の間隔をおいて前記円弧摺動面に密接して摺動する少なくとも２個以上の摺動案内部を幅をもって設け、
ともに幅を有する前記レンズ鏡筒の円弧摺動面と前記レンズ鏡筒嵌合孔の摺動案内部とを前記レンズの光軸が傾くことなく撮像素子の中心と一致した状態を保持したまま挿入して前記レンズ鏡筒と撮像素子との距離を調整してレンズと撮像素子のフォーカスを調整し、
前記レンズ鏡筒を水平回転して前記摺動案内部の頂部から隣接する摺動案内部の立ち上がり部分まで順次径方向に大径となる少なくとも２個以上係止のテーパー面に、前記係止突起を圧接して係止し、
前記レンズ鏡筒嵌合孔に前記レンズ鏡筒が挿入されたときのレンズの光軸を中心としたときの前記レンズ鏡筒嵌合孔の最小径をａ、最大径をｂ及び同中心から前記円弧摺動面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパー面までの径は前記レンズ鏡筒を水平回転して前記係止突起を圧接して係止する回転方向と同一方向に連続して減少させ、前記レンズ鏡筒を水平回転して前記係止突起を前記係止テーパー面に食い込み固定するようにしたことを特徴とするレンズの固着方法としたので、摺動案内部と円弧摺動面の直径が同一で、かつ、摺動案内部と円弧摺動面は幅をもっているため、レンズの光軸は傾くことなく撮像素子の中心と一致した状態を保持したままレンズ鏡筒がレンズホルダに挿入され、レンズ鏡筒と撮像素子の距離を調整してレンズと撮像素子のフォーカスを調整できる。フォーカス調整したら、摺動案内部と円弧摺動面が密接して回動し、回動により係止突起は、係止テーパー面に食い込んで固定され、撮像素子の中心に対するレンズの光軸がずれることなくフォーカス調整し、調整後にレンズ鏡筒をレンズホルダに容易、かつ、確実に固着することができる。
According to invention of Claim 3,
In the fixing method of the lens comprising at least an imaging element, a lens holder, and a lens barrel having a lens, and attaching the lens barrel to a lens barrel fitting hole provided in the lens holder,
Provided with an arc sliding surface having the same diameter and width on the outer wall surface of the lens barrel and provided with a locking projection protruding outward from the arc sliding surface,
On the inner wall surface of the lens barrel fitting hole, at least two sliding guide portions that slide in close contact with the arc sliding surface at a predetermined interval are provided with a width,
Both the arc sliding surface of the lens barrel having a width and the sliding guide portion of the lens barrel fitting hole are inserted while keeping the optical axis of the lens aligned with the center of the image sensor without tilting Adjusting the distance between the lens barrel and the image sensor to adjust the focus of the lens and the image sensor,
The locking projection is formed on at least two or more tapered surfaces of the lens barrel which are horizontally increased in diameter from the top of the sliding guide portion to the rising portion of the adjacent sliding guide portion by horizontally rotating the lens barrel. the pressed against the locking,
When the lens barrel is inserted into the lens barrel fitting hole, the minimum diameter of the lens barrel fitting hole when the optical axis of the lens is the center is a, the maximum diameter is b, and the center is the same. When the minimum diameter to the arc-sliding surface is r1 and the maximum diameter is r2, the size relationship is r1 <a <r2 ≦ b, and the diameter from the center to the locking tapered surface is the lens. The lens barrel is rotated horizontally to continuously reduce the locking projection in the same direction as the rotation direction in which the locking projection is pressed and locked, and the lens barrel is rotated horizontally to move the locking projection to the locking taper surface. Since the lens fixing method is characterized in that the biting is fixed, the diameter of the sliding guide portion and the arc sliding surface is the same, and the sliding guide portion and the arc sliding surface have a width. Keep the optical axis of the lens aligned with the center of the image sensor without tilting. While the lens barrel and is inserted into the lens holder can be adjusted focus adjustment to the lens and the imaging element the distance of the lens barrel and the image sensor. When the focus is adjusted, the sliding guide portion and the arc sliding surface rotate closely, and the locking projections are fixed by biting into the locking taper surface by the rotation, and the optical axis of the lens deviates from the center of the image sensor. Without adjusting the focus, the lens barrel can be easily and reliably fixed to the lens holder after the adjustment.

請求項４記載の発明によれば、前記レンズ鏡筒の外壁に、前記円弧摺動面と前記係止突起を１対として２対以上を等間隔で設け、前記レンズホルダの前記レンズ鏡筒嵌合孔の内壁に、前記摺動案内部と前記係止テーパー面を１対として前記レンズ鏡筒と同様に２対以上を等間隔で設けたので、レンズ鏡筒側の複数個の円弧摺動面に、それぞれ対応するレンズホルダ側の摺動案内部が光軸を変位させることなく摺動案内され、レンズ鏡筒側の複数個の係止突起がそれぞれ対応するレンズホルダ側の係止テーパー面に確実に食い込み固定される。   According to a fourth aspect of the present invention, two or more pairs are provided at equal intervals on the outer wall of the lens barrel, the arcuate sliding surface and the locking projection as a pair, and the lens barrel is fitted into the lens holder. Since the sliding guide portion and the locking taper surface are paired on the inner wall of the joint hole and two pairs or more are provided at equal intervals like the lens barrel, a plurality of arc slides on the lens barrel side are provided. The sliding guide portions on the lens holder side corresponding to the surfaces are slid and guided without displacing the optical axis, and the plurality of locking projections on the lens barrel side respectively correspond to the locking taper surfaces on the lens holder side. It bites in and is fixed securely.

請求項５記載の発明によれば、複数の円弧摺動面は、レンズの光軸を中心とする同一径としたので、レンズ鏡筒側の複数個のいずれの円弧摺動面に、レンズホルダ側のいずれの摺動案内部を嵌合しても、レンズの光軸のずれが生ずることなく摺動案内させることができる。   According to the invention of claim 5, since the plurality of arc sliding surfaces have the same diameter centered on the optical axis of the lens, the lens holder is attached to any of the plurality of arc sliding surfaces on the lens barrel side. Regardless of which side sliding guide portion is fitted, the sliding guide can be performed without causing a deviation of the optical axis of the lens.

請求項６記載の発明によれば、係止突起を硬質材料とし、係止テーパー面を前記係止突起より軟質材料としたので、撮像素子の中心に対するレンズの光軸のずれが生じず確実にレンズ鏡筒をレンズホルダのレンズ鏡筒嵌合孔に固着できる。   According to the sixth aspect of the present invention, since the locking projection is made of a hard material and the locking taper surface is made of a softer material than the locking projection, the optical axis of the lens with respect to the center of the image pickup device does not deviate securely The lens barrel can be fixed to the lens barrel fitting hole of the lens holder.

請求項７記載の発明によれば、撮像素子の中心にレンズの光軸を確実に一致させ、かつ振動や衝撃により光軸ずれやフォーカスずれの発生のないカメラ装置を得ることができる。   According to the seventh aspect of the present invention, it is possible to obtain a camera device in which the optical axis of the lens is surely aligned with the center of the image sensor and no optical axis deviation or focus deviation occurs due to vibration or impact.

本発明の実施例１を図１及び図２（ａ）（ｂ）に基き説明する。
プリント基板３１には、図５と同様に、ＣＣＤ等の撮像素子３３が設けられており、この撮像素子３３に臨ませてレンズホルダ２５の台座部３０が取り付けられカメラ装置３４が形成されている。このレンズホルダ２５にレンズ２３を内蔵したレンズ鏡筒２４がフォーカス調整した後、本発明特有の機構によって取り付けられて固定され、カメラ装置３４が形成されている。 A first embodiment of the present invention will be described with reference to FIGS. 1 and 2A and 2B.
Similar to FIG. 5, an image sensor 33 such as a CCD is provided on the printed circuit board 31, and a pedestal 30 of the lens holder 25 is attached to face the image sensor 33 to form a camera device 34. . After the lens barrel 24 incorporating the lens 23 in the lens holder 25 adjusts the focus, the lens barrel 24 is attached and fixed by a mechanism unique to the present invention to form a camera device 34.

前記レンズホルダ２５には、中心部に前記レンズ鏡筒２４を取り付けるためのレンズ鏡筒嵌合孔３２が前記撮像素子３３に向かって穿設されている。このレンズ鏡筒嵌合孔３２の内壁には、１２０度の間隔で内方に突出した係止突起２７が３個設けられ、これら３個の係止突起２７の間には、同一径の円弧摺動面２６が設けられている。
前記レンズ鏡筒２４の外壁には、このレンズ鏡筒２４の筒の長さの約２分の１の幅をもち、１２０度の間隔で摺動案内部２８が突出して形成されており、この摺動案内部２８は、一側面が径方向に垂直に立ち下がり、他側面が摺動案内部２８の頂部から隣接する摺動案内部２８の立ち下がり部分まで順次径方向に小径となる係止テーパー面２９が形成されている。前記摺動案内部２８の頂部は、前記レンズホルダ２５の円弧摺動面２６に密接して摺動するように円弧摺動面２６の直径と同一に形成されている。
図２（ａ）に示すように、前記レンズ鏡筒嵌合孔３２に前記レンズ鏡筒２４が挿入されたときのレンズ２３の光軸を中心としたときの前記レンズ鏡筒嵌合孔３２の最小径をａ、最大径をｂ及び同中心から前記係止テーパ面２９までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパ面２９までの径は、前記レンズ鏡筒２４を水平回転して前記係止突起を圧接して係止する回転方向と逆方向に連続して増大させている。 In the lens holder 25, a lens barrel fitting hole 32 for attaching the lens barrel 24 to the center is formed toward the image sensor 33. On the inner wall of the lens barrel fitting hole 32, there are provided three locking projections 27 protruding inwardly at intervals of 120 degrees. Between these three locking projections 27, an arc having the same diameter is provided. A sliding surface 26 is provided.
On the outer wall of the lens barrel 24, there is formed a sliding guide portion 28 having a width of about one half of the length of the lens barrel 24 and protruding at intervals of 120 degrees. The sliding guide portion 28 has one side surface that vertically falls in the radial direction, and the other side surface is sequentially locked in a radial direction from the top of the sliding guide portion 28 to the falling portion of the adjacent sliding guide portion 28. A tapered surface 29 is formed. The top of the sliding guide portion 28 is formed to have the same diameter as the arc sliding surface 26 so as to slide in close contact with the arc sliding surface 26 of the lens holder 25.
As shown in FIG. 2A, the lens barrel fitting hole 32 when the lens barrel 24 is inserted into the lens barrel fitting hole 32 and the optical axis of the lens 23 is the center. When the minimum diameter is a, the maximum diameter is b, the minimum diameter from the same center to the locking tapered surface 29 is r1, and the maximum diameter is r2, the respective magnitude relationships are r1 <a <r2 ≦ b, Further, the diameter from the center to the locking tapered surface 29 is continuously increased in the direction opposite to the rotation direction in which the lens barrel 24 is rotated horizontally and the locking projections are pressed and locked.

以上のような構成において、レンズ鏡筒２４をレンズホルダ２５のレンズ鏡筒嵌合孔３２に取り付けるために嵌合するが、図２（ａ）に示すように、レンズ鏡筒２４の摺動案内部２８がレンズホルダ２５の円弧摺動面２６に密接し、また、レンズホルダ２５の係止突起２７がレンズ鏡筒２４の係止テーパー面２９にわずかに隙間をもっている位置で嵌合する。摺動案内部２８と円弧摺動面２６の直径が同一で、かつ、摺動案内部２８と円弧摺動面２６は幅をもっているため、レンズ２３の光軸は傾くことなく撮像素子の中心と一致した状態を保持したままレンズ鏡筒２４がレンズホルダ２５に挿入される。レンズ鏡筒２４と撮像素子３３との距離を調整してレンズ２３と撮像素子のフォーカスを調整したら、図２（ｂ）に示すようにレンズ鏡筒２４を左方向（矢印方向）に回転させる。ここで、係止突起２７は硬質材料（例えばアルミニウム）で係止テーパー面２９は軟質材料（例えばポリカーボネート）を用いると、係止突起２７は、係止テーパー面２９に食い込んで固定される。レンズ鏡筒２４を回転させても摺動案内部２８と円弧摺動面２６は３点で常に密接しているので撮像素子３３に対するレンズ２３の光軸が変化することはない。   In the configuration as described above, the lens barrel 24 is fitted in order to be attached to the lens barrel fitting hole 32 of the lens holder 25. As shown in FIG. The portion 28 is in close contact with the arc-sliding surface 26 of the lens holder 25, and the engagement protrusion 27 of the lens holder 25 is fitted to the engagement taper surface 29 of the lens barrel 24 at a slight gap. Since the slide guide portion 28 and the arc slide surface 26 have the same diameter, and the slide guide portion 28 and the arc slide surface 26 have a width, the optical axis of the lens 23 is not inclined and is centered on the image sensor. The lens barrel 24 is inserted into the lens holder 25 while maintaining the matching state. When the distance between the lens barrel 24 and the image sensor 33 is adjusted to adjust the focus between the lens 23 and the image sensor, the lens barrel 24 is rotated leftward (arrow direction) as shown in FIG. Here, when the locking projection 27 is made of a hard material (for example, aluminum) and the locking taper surface 29 is made of a soft material (for example, polycarbonate), the locking projection 27 is fixed by biting into the locking taper surface 29. Even if the lens barrel 24 is rotated, the slide guide portion 28 and the arc slide surface 26 are always in close contact at three points, so that the optical axis of the lens 23 with respect to the image sensor 33 does not change.

本発明の実施例２を図３（ａ）（ｂ）に基き説明する。
前記実施例１では、レンズホルダ２５の内壁に係止突起２７と円弧摺動面２６を形成し、レンズ鏡筒２４の外壁に摺動案内部２８と係止テーパー面２９を形成したが、実施例２では、図３（ａ）に示すように、レンズホルダ２５の内壁に摺動案内部２８と係止テーパー面２９を形成し、レンズ鏡筒２４の外壁に係止突起２７と円弧摺動面２６を形成したものである。
図３（ａ）に示すように、前記レンズ鏡筒嵌合孔３２に前記レンズ鏡筒２４が挿入されたときのレンズ２３の光軸を中心としたときの前記レンズ鏡筒嵌合孔３２の最小径をａ、最大径をｂ及び同中心から前記円弧摺動面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパー面２９までの径は、前記レンズ鏡筒２４を水平回転して前記係止突起を圧接して係止する回転方向と同一方向に連続して減少させている。 A second embodiment of the present invention will be described with reference to FIGS.
In the first embodiment, the locking protrusion 27 and the arc sliding surface 26 are formed on the inner wall of the lens holder 25, and the sliding guide portion 28 and the locking taper surface 29 are formed on the outer wall of the lens barrel 24. In Example 2, as shown in FIG. 3A, the sliding guide portion 28 and the locking tapered surface 29 are formed on the inner wall of the lens holder 25, and the locking projection 27 and the arc slide on the outer wall of the lens barrel 24. The surface 26 is formed.
As shown in FIG. 3A, when the lens barrel 24 is inserted into the lens barrel fitting hole 32, the lens barrel fitting hole 32 is centered on the optical axis of the lens 23. When the minimum diameter is a, the maximum diameter is b, the minimum diameter from the same center to the arc-sliding surface is r1, and the maximum diameter is r2, the respective magnitude relationships are r1 <a <r2 ≦ b, and diameter from the center to the locking tape Per surface 29 is reduced continuously in the same direction as the rotation direction for locking by pressing the locking protrusion of the lens barrel 24 with horizontal rotation.

以上のような構成において、図３（ａ）に示すように、レンズホルダ２５の摺動案内部２８がレンズ鏡筒２４の円弧摺動面２６に密接し、また、レンズ鏡筒２４の係止突起２７がレンズホルダ２５の係止テーパー面２９にわずかに隙間をもっている位置で嵌合する。摺動案内部２８と円弧摺動面２６の直径が同一で、かつ、摺動案内部２８と円弧摺動面２６は幅をもっているため、レンズ２３の光軸は傾くことなく撮像素子の中心と一致した状態を保持したままレンズ鏡筒２４がレンズホルダ２５に挿入される。レンズ鏡筒２４と撮像素子３３との距離を調整してレンズ２３と撮像素子のフォーカスを調整したら、図３（ｂ）に示すようにレンズ鏡筒２４を左方向（矢印方向）に回転させる。ここで、係止突起２７を形成したレンズ鏡筒２４は硬質材料で、係止テーパー面２９を形成したレンズホルダ２５は軟質材料を用いると、係止突起２７は、係止テーパー面２９に食い込んで固定される。レンズ鏡筒２４を回転させても摺動案内部２８と円弧摺動面２６は常に密接しているので撮像素子３３に対するレンズ２３の光軸が変化することはない。   In the configuration as described above, as shown in FIG. 3A, the sliding guide portion 28 of the lens holder 25 is in close contact with the arc sliding surface 26 of the lens barrel 24, and the lens barrel 24 is locked. The protrusion 27 is fitted to the locking tapered surface 29 of the lens holder 25 at a position having a slight gap. Since the slide guide portion 28 and the arc slide surface 26 have the same diameter, and the slide guide portion 28 and the arc slide surface 26 have a width, the optical axis of the lens 23 is not inclined and is centered on the image sensor. The lens barrel 24 is inserted into the lens holder 25 while maintaining the matching state. After adjusting the distance between the lens barrel 24 and the image sensor 33 to adjust the focus of the lens 23 and the image sensor, the lens barrel 24 is rotated leftward (arrow direction) as shown in FIG. Here, when the lens barrel 24 formed with the locking projection 27 is made of a hard material and the lens holder 25 formed with the locking taper surface 29 is made of a soft material, the locking projection 27 bites into the locking taper surface 29. It is fixed with. Even if the lens barrel 24 is rotated, the slide guide 28 and the arc slide surface 26 are always in close contact with each other, so that the optical axis of the lens 23 with respect to the image pickup device 33 does not change.

前記実施例１及び実施例２では、３箇所で係止されるようにしたが、実施例３では、図４（ａ）（ｂ）に示すように２箇所で係止する例を示しており、レンズホルダ２５には、レンズ鏡筒嵌合孔３２の内壁に１８０度の間隔で内方に突出した係止突起２７が設けられ、これら２個の係止突起２７の間は、同一径の円弧摺動面２６で連続して設けられている。
前記レンズ鏡筒２４の外壁には、１８０度の間隔で摺動案内部２８が突出して形成されており、この摺動案内部２８は、一側面が径方向に垂直に立ち下がり、他側面が摺動案内部２８の頂部から隣接する摺動案内部２８の立ち下がり部分まで順次径方向に小径となる係止テーパー面２９が形成されている。前記摺動案内部２８の頂部は、前記レンズホルダ２５の円弧摺動面２６に密接して摺動するように円弧摺動面２６の直径と同一に形成されている。 In Example 1 and Example 2, locking is performed at three places. However, Example 3 shows an example of locking at two positions as shown in FIGS. 4 (a) and 4 (b). The lens holder 25 is provided with a locking projection 27 projecting inwardly at an interval of 180 degrees on the inner wall of the lens barrel fitting hole 32, and between these two locking projections 27, the same diameter is provided. The circular arc sliding surface 26 is provided continuously.
On the outer wall of the lens barrel 24, there are formed sliding guide portions 28 projecting at an interval of 180 degrees. The sliding guide portion 28 has one side surface falling vertically to the radial direction and the other side surface thereof. A locking taper surface 29 having a diameter gradually decreasing from the top of the sliding guide 28 to the falling portion of the adjacent sliding guide 28 is formed. The top of the sliding guide portion 28 is formed to have the same diameter as the arc sliding surface 26 so as to slide in close contact with the arc sliding surface 26 of the lens holder 25.

以上のような構成において、レンズ鏡筒２４をレンズホルダ２５のレンズ鏡筒嵌合孔３２に取り付けるために嵌合するが、図４（ａ）に示すように、レンズ鏡筒２４の摺動案内部２８がレンズホルダ２５の円弧摺動面２６に密接し、また、レンズホルダ２５の係止突起２７がレンズ鏡筒２４の係止テーパー面２９にわずかに隙間をもっている位置で嵌合する。摺動案内部２８と円弧摺動面２６の直径が同一で、かつ、摺動案内部２８と円弧摺動面２６は幅をもっているため、レンズ２３の光軸は傾くことなく撮像素子の中心と一致した状態を保持したままレンズ鏡筒２４がレンズホルダ２５に挿入される。レンズ鏡筒２４のと撮像素子３３との距離を調整してレンズ２３と撮像素子のフォーカスを調整したら、図４（ｂ）に示すようにレンズ鏡筒２４を左方向（矢印方向）に回転させる。ここで、係止突起２７は硬質材料で係止テーパー面２９は軟質材料を用いると、係止突起２７は、係止テーパー面２９に食い込んで固定される。レンズ鏡筒２４を回転させても摺動案内部２８と円弧摺動面２６は２点で常に密接しているので撮像素子３３に対するレンズ２３の光軸が変化することはない。
この実施例３においては、円弧摺動面２６に接しながら摺動する摺動案内部２８の面積はできるだけ広くすることで、撮像素子３３に対するレンズ２３の光軸のずれがなくなる。
また、この実施例３において、実施例２と同様に、レンズホルダ２５の内壁に摺動案内部２８と係止テーパー面２９を形成し、レンズ鏡筒２４の外壁に係止突起２７と円弧摺動面２６を形成することもできる。 In the configuration as described above, the lens barrel 24 is fitted in order to be attached to the lens barrel fitting hole 32 of the lens holder 25. As shown in FIG. The portion 28 is in close contact with the arc-sliding surface 26 of the lens holder 25, and the engagement protrusion 27 of the lens holder 25 is fitted to the engagement taper surface 29 of the lens barrel 24 at a slight gap. Since the slide guide portion 28 and the arc slide surface 26 have the same diameter, and the slide guide portion 28 and the arc slide surface 26 have a width, the optical axis of the lens 23 is not inclined and is centered on the image sensor. The lens barrel 24 is inserted into the lens holder 25 while maintaining the matching state. After adjusting the distance between the lens barrel 24 and the image sensor 33 to adjust the focus of the lens 23 and the image sensor, the lens barrel 24 is rotated leftward (arrow direction) as shown in FIG. . Here, when the locking projection 27 is made of a hard material and the locking taper surface 29 is made of a soft material, the locking projection 27 is fixed by biting into the locking taper surface 29. Even if the lens barrel 24 is rotated, the slide guide portion 28 and the arc slide surface 26 are always in close contact with each other at two points, so that the optical axis of the lens 23 with respect to the image sensor 33 does not change.
In the third embodiment, the displacement of the optical axis of the lens 23 with respect to the image sensor 33 is eliminated by making the area of the sliding guide portion 28 that slides in contact with the arc sliding surface 26 as large as possible.
In the third embodiment, similarly to the second embodiment, the sliding guide portion 28 and the locking tapered surface 29 are formed on the inner wall of the lens holder 25, and the locking projection 27 and the arc slide are formed on the outer wall of the lens barrel 24. A moving surface 26 can also be formed.

前記実施例１、実施例２及び実施例３では、撮像素子３３に対するレンズ２３の光軸のずれをなくすために、円弧摺動面２６と摺動案内部２８の接触摺動箇所は、３箇所と２箇所の例を示したが、これに限られるものではなく、４箇所以上でもよい。   In the first embodiment, the second embodiment, and the third embodiment, in order to eliminate the displacement of the optical axis of the lens 23 with respect to the image sensor 33, there are three contact sliding portions of the arc sliding surface 26 and the sliding guide portion 28. However, the present invention is not limited to this and may be four or more.

実施例１、実施例２及び実施例３において、複数個所の円弧摺動面２６は、光軸からの半径を全て同一とし、かつ、複数個所の摺動案内部２８も光軸からの半径を全て同一としたことにより、レンズ鏡筒２４をレンズホルダ２５にどの位置で嵌合してもよいようになっている。しかし、１対の円弧摺動面２６と摺動案内部２８の組み毎に一致させれば必ずしもすべてを一致させる必要はない。ただし、この場合は、嵌合位置が予め決められる。   In the first embodiment, the second embodiment, and the third embodiment, the plurality of arc slide surfaces 26 have the same radius from the optical axis, and the plurality of slide guide portions 28 also have the radius from the optical axis. Since all are the same, the lens barrel 24 can be fitted to the lens holder 25 at any position. However, it is not always necessary to match all of the pairs of the arcuate sliding surfaces 26 and the sliding guide portions 28 for each pair. However, in this case, the fitting position is determined in advance.

１０…レンズ、１１…レンズ鏡筒、１２…ねじ山、１３…レンズホルダ、１４…ねじ溝、１５…ＣＣＤカバー、１６…ねじ山、１７…撮像素子、１８…基板、１９…固定ねじ、２０…突起、２１…溝、２２…隙間、２３…レンズ、２４…レンズ鏡筒、２５…レンズホルダ、２６…円弧摺動面、２７…係止突起、２８…摺動案内部、２９…係止テーパー面、３０…台座部、３１…プリント基板、３２…レンズ鏡筒嵌合孔、３３…撮像素子、３４…カメラ装置。   DESCRIPTION OF SYMBOLS 10 ... Lens, 11 ... Lens barrel, 12 ... Screw thread, 13 ... Lens holder, 14 ... Screw groove, 15 ... CCD cover, 16 ... Screw thread, 17 ... Imaging element, 18 ... Substrate, 19 ... Fixing screw, 20 ... Projection, 21 ... Groove, 22 ... Gap, 23 ... Lens, 24 ... Lens barrel, 25 ... Lens holder, 26 ... Arc sliding surface, 27 ... Locking projection, 28 ... Slide guide, 29 ... Locking Tapered surface, 30 ... pedestal part, 31 ... printed circuit board, 32 ... lens barrel fitting hole, 33 ... imaging device, 34 ... camera device.

Claims (6)

撮像素子とレンズホルダとレンズを有するレンズ鏡筒とを少なくとも備え、前記レンズホルダに設けたレンズ鏡筒嵌合孔に前記レンズ鏡筒を取り付けるレンズの固着方法において、
前記レンズ鏡筒嵌合孔の内壁面に同一径で幅を有する円弧摺動面を設けるとともにこの円弧摺動面より内方に突出した係止突起を設け、
前記レンズ鏡筒の外壁面に、所定の間隔をおいて前記円弧摺動面に密接して摺動する少なくとも２個以上の摺動案内部を幅をもって設け、
ともに幅を有する前記レンズ鏡筒の摺動案内部と前記レンズ鏡筒嵌合孔の円弧摺動面とを前記レンズの光軸が傾くことなく撮像素子の中心と一致した状態を保持したまま挿入して前記レンズ鏡筒と撮像素子との距離を調整してレンズと撮像素子のフォーカスを調整し、
前記レンズ鏡筒を水平回転して前記摺動案内部の頂部から隣接する摺動案内部の立ち下がり部分まで順次径方向に小径となる少なくとも２個以上の係止テーパー面に、前記係止突起を圧接して係止し、
前記レンズ鏡筒嵌合孔に前記レンズ鏡筒が挿入されたときのレンズの光軸を中心としたときの前記レンズ鏡筒嵌合孔の最小径をａ、最大径をｂ及び同中心から前記係止テーパー面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパー面までの径は前記レンズ鏡筒を水平回転して前記係止突起を圧接して係止する回転方向と逆方向に連続して増大させ、前記レンズ鏡筒を水平回転して前記係止突起を前記係止テーパー面に食い込み固定するようにしたことを特徴とするレンズの固着方法。 In the fixing method of the lens comprising at least an imaging element, a lens holder, and a lens barrel having a lens, and attaching the lens barrel to a lens barrel fitting hole provided in the lens holder,
An arc sliding surface having the same diameter and width is provided on the inner wall surface of the lens barrel fitting hole, and a locking projection protruding inward from the arc sliding surface is provided,
On the outer wall surface of the lens barrel, at least two or more sliding guide portions that slide in close contact with the arc sliding surface at a predetermined interval are provided with a width ,
Both the sliding guide part of the lens barrel having a width and the arc sliding surface of the lens barrel fitting hole are inserted while maintaining the state where the optical axis of the lens coincides with the center of the image sensor without tilting. Adjusting the distance between the lens barrel and the image sensor to adjust the focus of the lens and the image sensor,
The locking projection is formed on at least two locking taper surfaces having a diameter gradually decreasing from the top of the sliding guide portion to the falling portion of the adjacent sliding guide portion by horizontally rotating the lens barrel. the pressed against the locking,
When the lens barrel is inserted into the lens barrel fitting hole, the minimum diameter of the lens barrel fitting hole when the optical axis of the lens is the center is a, the maximum diameter is b, and the center is the same. When the minimum diameter to the locking taper surface is r1 and the maximum diameter is r2, the magnitude relationship is r1 <a <r2 ≦ b, and the diameter from the center to the locking taper surface is the lens. The lens barrel is rotated horizontally to continuously increase the direction opposite to the rotation direction in which the locking projection is pressed and locked, and the lens barrel is rotated horizontally to move the locking projection to the locking taper surface. A fixing method for a lens, characterized by being fixed by biting. 前記レンズホルダの前記レンズ鏡筒嵌合孔の内壁に、前記円弧摺動面と前記係止突起を１対として２対以上を円周方向に等間隔で設け、前記レンズ鏡筒の外壁に、前記摺動案内部と前記係止テーパー面を１対として２対以上を円周方向に等間隔で設けたことを特徴とする請求項１記載のレンズの固着方法。 On the inner wall of the lens barrel fitting hole of the lens holder, two or more pairs are provided at equal intervals in the circumferential direction with the arc sliding surface and the locking projection as a pair, and on the outer wall of the lens barrel, The lens fixing method according to claim 1, wherein two or more pairs are provided at equal intervals in the circumferential direction with the sliding guide portion and the locking tapered surface as a pair. 撮像素子とレンズホルダとレンズを有するレンズ鏡筒とを少なくとも備え、前記レンズホルダに設けたレンズ鏡筒嵌合孔に前記レンズ鏡筒を取り付けるレンズの固着方法において、
前記レンズ鏡筒の外壁面に同一径で幅を有する円弧摺動面を設けるとともにこの円弧摺動面より外方に突出した係止突起を設け、
前記レンズ鏡筒嵌合孔の内壁面に、所定の間隔をおいて前記円弧摺動面に密接して摺動する少なくとも２個以上の摺動案内部を幅をもって設け、
ともに幅を有する前記レンズ鏡筒の円弧摺動面と前記レンズ鏡筒嵌合孔の摺動案内部とを前記レンズの光軸が傾くことなく撮像素子の中心と一致した状態を保持したまま挿入して前記レンズ鏡筒と撮像素子との距離を調整してレンズと撮像素子のフォーカスを調整し、
前記レンズ鏡筒を水平回転して前記摺動案内部の頂部から隣接する摺動案内部の立ち上がり部分まで順次径方向に大径となる少なくとも２個以上係止のテーパー面に、前記係止突起を圧接して係止し、
前記レンズ鏡筒嵌合孔に前記レンズ鏡筒が挿入されたときのレンズの光軸を中心としたときの前記レンズ鏡筒嵌合孔の最小径をａ、最大径をｂ及び同中心から前記円弧摺動面までの最小径をｒ１、最大径をｒ２としたときに、それぞれの大小関係はｒ１＜ａ＜ｒ２≦ｂであり、かつ前記中心から前記係止テーパー面までの径は前記レンズ鏡筒を水平回転して前記係止突起を圧接して係止する回転方向と同一方向に連続して減少させ、前記レンズ鏡筒を水平回転して前記係止突起を前記係止テーパー面に食い込み固定するようにしたことを特徴とするレンズの固着方法。 In the fixing method of the lens comprising at least an imaging element, a lens holder, and a lens barrel having a lens, and attaching the lens barrel to a lens barrel fitting hole provided in the lens holder,
Provided with an arc sliding surface having the same diameter and width on the outer wall surface of the lens barrel and provided with a locking projection protruding outward from the arc sliding surface,
On the inner wall surface of the lens barrel fitting hole, at least two sliding guide portions that slide in close contact with the arc sliding surface at a predetermined interval are provided with a width,
Both the arc sliding surface of the lens barrel having a width and the sliding guide portion of the lens barrel fitting hole are inserted while keeping the optical axis of the lens aligned with the center of the image sensor without tilting Adjusting the distance between the lens barrel and the image sensor to adjust the focus of the lens and the image sensor,
The locking projection is formed on at least two or more tapered surfaces of the lens barrel which are horizontally increased in diameter from the top of the sliding guide portion to the rising portion of the adjacent sliding guide portion by horizontally rotating the lens barrel. the pressed against the locking,
When the lens barrel is inserted into the lens barrel fitting hole, the minimum diameter of the lens barrel fitting hole when the optical axis of the lens is the center is a, the maximum diameter is b, and the center is the same. When the minimum diameter to the arc-sliding surface is r1 and the maximum diameter is r2, the size relationship is r1 <a <r2 ≦ b, and the diameter from the center to the locking tapered surface is the lens. The lens barrel is rotated horizontally to continuously reduce the locking projection in the same direction as the rotation direction in which the locking projection is pressed and locked, and the lens barrel is rotated horizontally to move the locking projection to the locking taper surface. A fixing method for a lens, characterized by being fixed by biting. 前記レンズ鏡筒の外壁に、前記円弧摺動面と前記係止突起を１対として２対以上を等間隔で設け、前記レンズホルダの前記レンズ鏡筒嵌合孔の内壁に、前記摺動案内部と前記係止テーパー面を１対として２対以上を円周方向に等間隔で設けたことを特徴とする請求項３記載のレンズの固着方法。 The outer surface of the lens barrel is provided with two or more pairs at equal intervals, with the arc sliding surface and the locking projection as a pair, and the sliding guide is provided on the inner wall of the lens barrel fitting hole of the lens holder. 4. The lens fixing method according to claim 3, wherein two or more pairs are provided at equal intervals in the circumferential direction, with the portion and the locking taper surface as a pair. 複数の前記円弧摺動面は、前記レンズの光軸を中心とする同一径としたことを特徴とする請求項２又は４記載のレンズの固着方法。 The lens fixing method according to claim 2, wherein the plurality of arc sliding surfaces have the same diameter with the optical axis of the lens as a center. 係止突起を硬質材料とし、係止テーパー面を前記係止突起より軟質材料としたことを特徴とする請求項１乃至５記載のレンズの固着方法。
6. The lens fixing method according to claim 1, wherein the locking protrusion is made of a hard material, and the locking taper surface is made of a softer material than the locking protrusion.
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