JP2006330121A - Camera module - Google Patents

Camera module Download PDF

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Publication number
JP2006330121A
JP2006330121A JP2005150312A JP2005150312A JP2006330121A JP 2006330121 A JP2006330121 A JP 2006330121A JP 2005150312 A JP2005150312 A JP 2005150312A JP 2005150312 A JP2005150312 A JP 2005150312A JP 2006330121 A JP2006330121 A JP 2006330121A
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JP
Japan
Prior art keywords
support member
pedestal
barrel
substrate
camera module
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Pending
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JP2005150312A
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Japanese (ja)
Inventor
Nobuyuki Mano
伸之 真野
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SMK Corp
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SMK Corp
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Application filed by SMK Corp filed Critical SMK Corp
Priority to JP2005150312A priority Critical patent/JP2006330121A/en
Priority to TW094145603A priority patent/TW200642448A/en
Priority to KR1020060005603A priority patent/KR20060121665A/en
Priority to CNA2006100681855A priority patent/CN1870724A/en
Publication of JP2006330121A publication Critical patent/JP2006330121A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G03B17/561—Support related camera accessories

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a camera module where a barrel 2 is screwed in a pedestal 5 stuck on a base plate 1 and the focal distances of lenses 25 and 25 are adjusted according to a screwed amount, and which achieves the shortening of working time by shortening time required for sticking the barrel 2 and the pedestal 5, thereby achieving the reduction of cost. <P>SOLUTION: A recessed part 31 extending over the barrel 2 and the pedestal 5 and also capable of receiving external light is formed on at least either the barrel 2 or the pedestal 5, and the barrel 2 and the pedestal 5 are stuck with photocuring adhesive 30 injected in the recessed part 31. The photocuring adhesive 30 is photocured in a short time and has viscosity to such an extent that it is not intruded in a screwing part between the barrel 2 and the pedestal 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、携帯電話機や携帯端末機などに用いられるカメラモジュールに関するものである。   The present invention relates to a camera module used for a mobile phone, a mobile terminal, and the like.

従来のカメラモジュールは、例えば図９に示すように、撮像素子１０１が配設された回路基板（以下単に基板という。）１０３と、レンズ１０５、１０５が支持されたバレル１０７と、バレル１０７と螺合してバレル１０７を支持するとともに接着剤１０９、１１１で基板１０３上に固着された台座１１３とを具備し、バレル１０７と台座１１３の螺合量を調整することによってレンズ１０５、１０５と撮像素子１０１の間にの距離（即ちレンズ１０５、１０５の焦点距離）を調整していた（例えば特許文献１参照）。
調整後のバレル１０７と台座１１３の固着は、例えばバレル１０７と台座１１３の螺合部１１５に接着剤を注入して行われていた（例えば特許文献２参照）。
特開２００４−２９７２８２ 特開２００３−１７２８５９ For example, as shown in FIG. 9, a conventional camera module includes a circuit board (hereinafter simply referred to as a board) 103 on which an image sensor 101 is disposed, a barrel 107 on which lenses 105 and 105 are supported, a barrel 107 and a screw. And a pedestal 113 fixed on the substrate 103 with adhesives 109 and 111 and adjusting the screwing amount of the barrel 107 and the pedestal 113 to adjust the lenses 105 and 105 and the image pickup device. The distance between the lenses 101 (ie, the focal lengths of the lenses 105 and 105) has been adjusted (see, for example, Patent Document 1).
The barrel 107 and the pedestal 113 after the adjustment are fixed by, for example, injecting an adhesive into the threaded portion 115 of the barrel 107 and the pedestal 113 (see, for example, Patent Document 2).
JP 2004-297282 A JP2003-172859

しかしながら、前述の従来例では、バレル１０７と台座１１３を固着するために螺合部１１５に注入する接着剤として熱硬化型接着剤が用いられていたので、硬化時間が長くなり（例えば３０分〜６０分）、作業時間が長くなってコストアップを招くという問題点があった。   However, in the above-described conventional example, since a thermosetting adhesive is used as an adhesive to be injected into the screwing portion 115 in order to fix the barrel 107 and the pedestal 113, the curing time becomes long (for example, 30 minutes to 60 minutes), there was a problem that the working time was increased and the cost was increased.

本発明は、上述の問題に鑑みなされたもので、バレル（第１支持部材の一例）と台座（第２支持部材の一例）の固着に要する時間を短かくして作業時間を短縮し、コストダウンを図ることのできるカメラモジュールを提供することを目的とする。   The present invention has been made in view of the above-described problems, and shortens the time required for fixing the barrel (an example of the first support member) and the base (an example of the second support member) to shorten the work time, thereby reducing the cost. An object of the present invention is to provide a camera module that can be realized.

請求項１記載の発明は、撮像素子が配設された基板と、レンズが支持された第１支持部材と、前記第１支持部材と螺合して前記第１支持部材を支持するとともに、前記基板上に固着された第２支持部材とを具備し、前記第１支持部材と前記第２支持部材の螺合量で前記レンズの焦点距離の調整が可能なカメラモジュールであって、前記第１支持部材と前記第２支持部材の少なくとも一方に、前記第１支持部材と前記第２支持部材に跨がるとともに外来光の受光が可能な凹部を形成し、前記凹部に注入された光硬化型接着剤によって前記第１支持部材と前記第２支持部材を固着したことを特徴とする。   According to the first aspect of the present invention, the substrate on which the image sensor is disposed, the first support member on which the lens is supported, and the first support member are screwed to support the first support member, and A camera module including a second support member fixed on a substrate, the focal length of the lens being adjustable by a screwing amount of the first support member and the second support member; At least one of the support member and the second support member is formed with a recess that straddles the first support member and the second support member and is capable of receiving extraneous light, and is a photo-curing type injected into the recess The first support member and the second support member are fixed by an adhesive.

請求項２記載の発明は、請求項１記載の発明において、凹部が第１支持部材と第２支持部材の螺合部まで延設され、前記凹部に注入された光硬化型接着剤が、前記第１支持部材と前記第２支持部材の螺合部に浸入しない程度の高粘度を有していることを特徴とする。   The invention according to claim 2 is the invention according to claim 1, wherein the concave portion extends to the threaded portion of the first support member and the second support member, and the photocurable adhesive injected into the concave portion is The first support member and the second support member have a high viscosity that does not enter the threaded portion.

請求項３記載の発明は、請求項２記載の発明において、第１支持部材が、円筒体の外周面にオネジが形成されたオネジ部と、このオネジ部の上端開口部を閉塞する上板とを具備し、第２支持部材が、円筒状内周面にオネジ部のオネジと螺合可能なメネジが形成されたメネジ部を具備し、凹部が前記上板の周辺部に円周方向に沿って等間隔で形成された複数の凹部からなり、この凹部が第１支持部材のオネジ部まで延設されていることを特徴とする。   According to a third aspect of the present invention, in the second aspect of the present invention, the first support member includes a male screw portion in which a male screw is formed on the outer peripheral surface of the cylindrical body, and an upper plate that closes the upper end opening of the male screw portion. And the second support member includes a female thread portion in which a female thread that can be screwed with the male thread of the male thread portion is formed on the cylindrical inner peripheral surface, and the concave portion extends along the circumferential direction in the peripheral portion of the upper plate. It is characterized by comprising a plurality of recesses formed at equal intervals and extending to the male screw portion of the first support member.

請求項４記載の発明は、撮像素子が配設された基板と、レンズが支持された第１支持部材と、前記第１支持部材と螺合して前記第１支持部材を支持するとともに、前記基板上に固着された第２支持部材とを具備し、前記第１支持部材と前記第２支持部材の螺合量で前記レンズの焦点距離の調整が可能なカメラモジュールであって、前記第１支持部材と前記第２支持部材の少なくとも一方を光透過型材料で成形し、前記第１支持部材と前記第２支持部材の螺合部に注入された光硬化型接着剤で前記第１支持部材と前記第２支持部材を固着したことを特徴とする。   According to a fourth aspect of the present invention, the substrate on which the image sensor is disposed, the first support member on which the lens is supported, and the first support member are screwed to support the first support member, and A camera module including a second support member fixed on a substrate, the focal length of the lens being adjustable by a screwing amount of the first support member and the second support member; At least one of the support member and the second support member is formed of a light transmissive material, and the first support member is formed of a photo-curable adhesive injected into a threaded portion of the first support member and the second support member. And the second support member is fixed.

請求項１記載の発明は、基板、第１支持部材及び第２支持部材を具備したカメラモジュールにおいて、第１支持部材と第２支持部材の少なくとも一方に両者に跨がるとともに外来光の受光が可能な凹部を形成し、凹部に注入された光硬化型接着剤で第１支持部材と第２支持部材を固着したので、第１支持部材と第２支持部材の螺合量調整後の第１支持部材と第２支持部材の固着強度を大きくできるとともに、加熱をせずに短時間で固着できる。   According to the first aspect of the present invention, in the camera module including the substrate, the first support member, and the second support member, the external light is received while straddling at least one of the first support member and the second support member. Since the possible recesses are formed and the first support member and the second support member are fixed with the photocurable adhesive injected into the recesses, the first after the screwing amount adjustment between the first support member and the second support member is adjusted The fixing strength between the support member and the second support member can be increased, and the fixing can be performed in a short time without heating.

請求項２記載の発明は、請求項１記載の発明において、凹部が第１支持部材と第２支持部材の螺合部まで延設され、凹部に注入された光硬化型接着剤が螺合部に浸入しない程度の高粘度を有しているので、凹部による第１支持部材と第２支持部材の固着面積を広くして固着強度を大きくできる。   According to a second aspect of the present invention, in the first aspect of the present invention, the concave portion extends to the threaded portion of the first support member and the second support member, and the photocurable adhesive injected into the concave portion is the threaded portion. Therefore, it is possible to increase the fixing strength by widening the fixing area of the first supporting member and the second supporting member by the concave portion.

請求項３記載の発明は、請求項２記載の発明において、第１支持部材がオネジ部と上板を具備し、第２支持部材がメネジ部を具備し、凹部が前記上板の周辺部に等間隔で形成された複数の凹部からなるので、第１支持部材と第２支持部材の固着強度を安定的に大きくできる。   According to a third aspect of the present invention, in the second aspect of the present invention, the first support member includes a male screw portion and an upper plate, the second support member includes a female screw portion, and the concave portion is formed in the peripheral portion of the upper plate. Since it consists of a plurality of recesses formed at equal intervals, the fixing strength between the first support member and the second support member can be stably increased.

請求項４記載の発明は、基板、第１支持部材及び第２支持部材を具備したカメラモジュールにおいて、第１支持部材と第２支持部材の少なくとも一方を光透過型材料で成形し、第１支持部材と第２支持部材の螺合部に注入された光硬化型接着剤で第１支持部材と第２支持部材を固着したので、第１支持部材と第２支持部材を固着するために、接着剤を溜めるための凹部を形成する必要がない。   According to a fourth aspect of the present invention, in the camera module including the substrate, the first support member, and the second support member, at least one of the first support member and the second support member is formed of a light transmissive material, and the first support is formed. Since the first support member and the second support member are fixed by the photo-curing adhesive injected into the threaded portion of the member and the second support member, the first support member and the second support member are bonded to each other. There is no need to form a recess for storing the agent.

図１〜図８は本発明の一実施例を示すもので、これらの図において、１は回路基板（以下単に基板という）、２は第１支持部材の一例としてのバレル、４は弾性部材の一例としての環状弾性体、５は第２支持部材の一例としての台座である。
バレル２と台座５は、レンズ２５、２５を支持するとともに、基板１上に固着される支持部材７を形成している。 1 to 8 show one embodiment of the present invention. In these drawings, 1 is a circuit board (hereinafter simply referred to as a board), 2 is a barrel as an example of a first support member, and 4 is an elastic member. An annular elastic body 5 as an example is a pedestal as an example of a second support member.
The barrel 2 and the pedestal 5 support the lenses 25 and 25 and form a support member 7 fixed on the substrate 1.

基板１は、図７（ｂ）に示すように、合成樹脂で略正方形板状に形成されるとともに、その四隅を隅切りした形状に形成されている。
基板１の上面の中央部には、図１（a）に示すように、配線パターン（図示省略）によって電気的に接続された撮像素子１１やその他の回路素子１２〜１４等が配設され、基板１の側面及び下面には、外部接続用端子（図示省略）が配設されている。
基板１の上面の周辺部には、図７（ｂ）に示すような固着面１５が形成されている。
固着面１５は、略正方形環状であって、その四隅を傾斜角４５度の斜めにした形状に形成されている。
固着面１５の四隅と一辺の中央には、台座５の固着面５５（後述する）の対応部分より面積の広い異形部分１６〜１６、１７が形成されている。 As shown in FIG. 7B, the substrate 1 is formed in a substantially square plate shape with a synthetic resin and is formed in a shape in which four corners are cut off.
As shown in FIG. 1A, an image pickup element 11 and other circuit elements 12 to 14 electrically connected by a wiring pattern (not shown) are disposed at the center of the upper surface of the substrate 1, External connection terminals (not shown) are disposed on the side surface and the lower surface of the substrate 1.
An adhering surface 15 as shown in FIG. 7B is formed on the periphery of the upper surface of the substrate 1.
The fixing surface 15 has a substantially square annular shape and is formed in a shape in which the four corners are inclined at an inclination angle of 45 degrees.
In the four corners and the center of one side of the fixing surface 15, deformed portions 16 to 16 and 17 having a larger area than the corresponding portions of the fixing surface 55 (described later) of the pedestal 5 are formed.

バレル２は合成樹脂で成形され、図５（a）（b）に示すように、略円筒状に形成されたバレル本体２１と、このバレル本体２１の上端開口部を閉塞して外周縁をつば状に突出させた上板２２とを具備し、この上板２２には絞り孔２３が形成されている。
バレル本体２１の内側には２つのレンズ２５、２５が保持され、バレル本体２１の外側には、外周面にオネジを有するオネジ部２６が形成されている。
バレル本体２１の下端開口側には、環状弾性体４を係合保持するための係合段部２８が形成されている。
上板２２の周辺部には、図５（a）（b）に示すような、円周方向に沿って等間隔に４つの凹部３１が形成され、この凹部３１はバレル本体２１のオネジ部２６の上部まで延設されている。この凹部３１は、外部から注入される光硬化型接着剤３０を溜めるためのもので、注入される光硬化型接着剤３０は、バレル２と台座５の螺合部に浸入しない程度の高粘度を有するとともに、紫外線や可視光によって短時間（例えば１０秒前後）で硬化する性質を有している。 As shown in FIGS. 5A and 5B, the barrel 2 is formed of a synthetic resin. As shown in FIGS. 5 (a) and 5 (b), the barrel main body 21 formed in a substantially cylindrical shape and the upper end opening of the barrel main body 21 are closed so that the outer peripheral edge is covered. And an upper plate 22 protruding in a shape, and the upper plate 22 has a throttle hole 23 formed therein.
Two lenses 25, 25 are held inside the barrel main body 21, and a male screw portion 26 having a male screw on the outer peripheral surface is formed outside the barrel main body 21.
An engagement step portion 28 for engaging and holding the annular elastic body 4 is formed on the lower end opening side of the barrel main body 21.
As shown in FIGS. 5 (a) and 5 (b), four concave portions 31 are formed at equal intervals along the circumferential direction in the peripheral portion of the upper plate 22, and the concave portions 31 are male screw portions 26 of the barrel body 21. It extends to the top of the. The concave portion 31 is for accumulating the photocurable adhesive 30 injected from the outside, and the injected photocurable adhesive 30 does not enter the threaded portion of the barrel 2 and the base 5. And has the property of being cured in a short time (for example, around 10 seconds) by ultraviolet rays or visible light.

環状弾性体４は合成ゴムのような弾性材料によって外周縁が円形に成形され、一体に形成された係合部４１と当接部４２を具備している。
係合部４１は、断面が略五角形状であってバレル本体２１の係合段部２８に係合可能に形成され、当接部４２は断面が略半円形状に形成されている。 The annular elastic body 4 has an outer peripheral edge formed into a circular shape by an elastic material such as synthetic rubber, and includes an engaging portion 41 and an abutting portion 42 that are integrally formed.
The engaging portion 41 has a substantially pentagonal cross section and is formed so as to be engageable with the engaging step portion 28 of the barrel body 21, and the abutting portion 42 has a substantially semicircular cross section.

台座５は合成樹脂で成形され、図６（a）（b）に示すように略円筒状に形成された上側台座５１と、この上側台座５１の下側に連設された略四角筒状の下側台座５２とを具備している。
上側台座５１には、その円筒状内周面にメネジを有するメネジ部５３が形成され、このメネジ部５３のメネジはバレル本体２１のオネジ部２６のオネジと螺合可能な形状に形成されている。
上側台座５１と下側台座５２の連結部の内側には、バレル２のオネジ部２６の螺進方向の移動限界位置を規制する略円環状のストッパー部５６が突設している。
上側台座５１の一側壁の中央部には切欠き５７が形成され、この切欠き５７は上側、下側及び外側が開口している。
下側台座５２の下端面は基板１との固着面５５となり、この固着面５５は、図７（a）に示すように略正方形環状であって、その四隅が傾斜角４５度の斜めに形成されるとともに、一辺の中央を切り欠いた形状に形成されている。
台座５の固着面５５と基板１の固着面１５とは、接着剤６０によって形成された接着層６１及び接着フィレット６２、６３によって固着（接着）されている。 The pedestal 5 is formed of a synthetic resin, and has an upper pedestal 51 formed in a substantially cylindrical shape as shown in FIGS. 6 (a) and 6 (b), and a substantially square cylindrical shape continuously provided below the upper pedestal 51. And a lower pedestal 52.
The upper pedestal 51 is formed with a female threaded portion 53 having a female thread on its cylindrical inner peripheral surface, and the female thread of the female threaded portion 53 is formed in a shape that can be screwed with the male thread of the male threaded portion 26 of the barrel body 21. .
A substantially annular stopper portion 56 is provided on the inner side of the connecting portion between the upper pedestal 51 and the lower pedestal 52 so as to restrict the movement limit position of the male screw portion 26 of the barrel 2 in the screwing direction.
A notch 57 is formed in the central portion of one side wall of the upper pedestal 51, and the notch 57 is open on the upper side, the lower side, and the outer side.
The lower end surface of the lower pedestal 52 is a fixing surface 55 to the substrate 1, and the fixing surface 55 is formed in a substantially square ring shape as shown in FIG. In addition, it is formed in a shape in which the center of one side is cut out.
The fixing surface 55 of the base 5 and the fixing surface 15 of the substrate 1 are fixed (adhered) by an adhesive layer 61 and adhesive fillets 62 and 63 formed by an adhesive 60.

つぎにカメラモジュールの組立について説明する。
（１）撮像素子１１や回路素子１２〜１４が実装された基板１の固着面１５と、台座５の固着面５５との少なくとも一方に接着剤６０を塗布し、撮像素子１１の受光面の中心軸と上側台座５１の中心軸を一致させた状態で、接着剤６０を介して固着面１５と固着面５５を密着させ、基板１上に台座５を載置する。この接着剤６０は、熱硬化型、常温硬化型、光硬化型のいずれでもよい。
そして、接着剤６０を硬化させることにより、基板１の固着面１５のうちの、台座５の固着面５５と対面する部分において両者を固着する接着層６１を形成するとともに、この接着層６１に連続する所定部分において両者を固着する接着フィレット６２〜６２、６３を形成する。
接着フィレット６２は、図１（ｂ）に示すように、基板１の固着面１５の異形部分１６と下側台座５２の外側壁の異形部分１６に隣接する部分とを固着する。
接着フィレット６３は、図１（ａ）に拡大して図示するように、基板１の固着面１５の異形部分１７と下側台座５２の外側壁の異形部分１７に隣接する部分とを固着する。
上述のように、接着層６１と接着フィレット６２〜６２、６３によって基板１と台座５を固着しているので、基板１の縦と横が約６ｍｍで、下側台座５２の側壁の板厚（すなわち固着面５５の幅）が略０．３ｍｍのような小型化のカメラモジュールにおいても所望の固着強度が得られる。例えば、台座５の成形時に固着面５５に反りが生じて接着剤が付き難いような場合でも、接着フィレット６２〜６２，６３によって所望の固着強度が得られる。 Next, assembly of the camera module will be described.
(1) The adhesive 60 is applied to at least one of the fixing surface 15 of the substrate 1 on which the imaging element 11 and the circuit elements 12 to 14 are mounted and the fixing surface 55 of the pedestal 5, and the center of the light receiving surface of the imaging element 11 is applied. With the shaft and the center axis of the upper pedestal 51 aligned with each other, the fixing surface 15 and the fixing surface 55 are brought into close contact with each other through the adhesive 60, and the pedestal 5 is placed on the substrate 1. The adhesive 60 may be any of a thermosetting type, a room temperature curing type, and a photocuring type.
Then, by curing the adhesive 60, an adhesive layer 61 that fixes both of the fixing surfaces 15 of the substrate 1 is formed at a portion facing the fixing surface 55 of the base 5, and the adhesive layer 61 is continuous with the adhesive layer 61. Adhesive fillets 62 to 62 and 63 are formed to fix the two at predetermined portions.
As shown in FIG. 1B, the adhesive fillet 62 fixes the deformed portion 16 of the fixing surface 15 of the substrate 1 and the portion adjacent to the deformed portion 16 of the outer wall of the lower pedestal 52.
The adhesion fillet 63 fixes the deformed portion 17 of the fixing surface 15 of the substrate 1 and the portion adjacent to the deformed portion 17 of the outer wall of the lower pedestal 52 as shown in an enlarged view in FIG.
As described above, since the substrate 1 and the pedestal 5 are fixed by the adhesive layer 61 and the adhesive fillets 62 to 62, 63, the length and width of the substrate 1 are about 6 mm, and the thickness of the side wall of the lower pedestal 52 ( That is, a desired fixing strength can be obtained even in a miniaturized camera module in which the width of the fixing surface 55 is approximately 0.3 mm. For example, even when the fixing surface 55 is warped when the pedestal 5 is molded and it is difficult to attach the adhesive, a desired fixing strength can be obtained by the adhesive fillets 62 to 62 and 63.

（２）ついで、図５（a）（ｂ）に示すように、バレル２の係合段部２８に環状弾性体４の係合部４１を係合して環状弾性体４を保持した後、図８及び図１（a）に示すように、バレル２のオネジ部２６を台座５のメネジ部５３に螺合する。
このとき、レンズ２５、２５の中心軸が上側台座５１の中心軸に一致し、環状弾性体４がバレル２の先端部と台座５のストッパー部５６との間で押圧されて弾性変形した状態で、レンズ２５、２５の焦点距離が合うように、予めバレル２と台座５の形状が形成されるとともに、オネジ部２６とメネジ部５３のネジ数が設定されている。
このため、オネジ部２６とメネジ部５３の螺合量を調整してレンズ２５、２５の焦点を撮像素子１１に合わせたときには、環状弾性体４が弾性変形した状態でバレル２の先端部と台座５のストッパー部５６の間に介在し、その弾性力でオネジ部２６とメネジ部５３の摩擦力が補強され、バレル２と台座５の螺合による締め付け力を大きくして螺合部の隙間（遊び）によるレンズ２５、２５の焦点距離のずれを防止できる。
また、バレル２の先端部と台座５のストッパー部５６の間に環状弾性体４を介在させるだけでよいので、圧接部材と板バネを介在させる従来例のように大型化するのを避けて小型化を図ることができる。 (2) Next, as shown in FIGS. 5A and 5B, after engaging the engaging portion 41 of the annular elastic body 4 with the engaging step portion 28 of the barrel 2 to hold the annular elastic body 4, As shown in FIGS. 8 and 1A, the male screw portion 26 of the barrel 2 is screwed into the female screw portion 53 of the base 5.
At this time, the center axis of the lenses 25, 25 coincides with the center axis of the upper pedestal 51, and the annular elastic body 4 is pressed between the distal end portion of the barrel 2 and the stopper portion 56 of the pedestal 5 and elastically deformed. The shapes of the barrel 2 and the pedestal 5 are previously formed so that the focal lengths of the lenses 25 and 25 are matched, and the number of screws of the male screw portion 26 and the female screw portion 53 is set.
For this reason, when the screwing amount of the male screw portion 26 and the female screw portion 53 is adjusted and the focus of the lenses 25 and 25 is adjusted to the image pickup device 11, the distal end portion and the base of the barrel 2 are elastically deformed. 5, the frictional force of the male screw portion 26 and the female screw portion 53 is reinforced by the elastic force, and the tightening force by the screwing of the barrel 2 and the base 5 is increased to increase the clearance ( It is possible to prevent the focal length of the lenses 25 and 25 from being shifted due to play.
Further, since it is only necessary to interpose the annular elastic body 4 between the front end portion of the barrel 2 and the stopper portion 56 of the pedestal 5, it is possible to avoid the increase in size as in the conventional example in which the pressure contact member and the leaf spring are interposed. Can be achieved.

（３）ついで、バレル２の凹部３１〜３１に光硬化型接着剤３０を注入し、図１（a）に示すようにバレル２と台座５を固着する。
このとき、光硬化型接着剤３０はバレル２と台座５の螺合部に侵入しない程度の高い粘度を有しているので、光硬化型接着剤３０が凹部３１からオネジ部２６とメネジ部５３のネジの隙間に浸入して未硬化となることがなく、紫外線又は可視光によって短時間（例えば１０秒後）に光硬化型接着剤３０を硬化してバレル２と台座５を固着できる。 (3) Next, the photocurable adhesive 30 is injected into the recesses 31 to 31 of the barrel 2, and the barrel 2 and the pedestal 5 are fixed as shown in FIG.
At this time, the photocurable adhesive 30 has such a high viscosity that it does not enter the threaded portion of the barrel 2 and the pedestal 5, so that the photocurable adhesive 30 passes from the recessed portion 31 to the male screw portion 26 and the female screw portion 53. The barrel 2 and the pedestal 5 can be fixed by curing the photocurable adhesive 30 in a short time (for example, after 10 seconds) with ultraviolet rays or visible light.

前述のようにして組み立てられたカメラモジュールは、カメラモジュール用コネクタを介して又は直接に、携帯電話機や携帯端末機などの配線回路基板に実装される。    The camera module assembled as described above is mounted on a printed circuit board such as a mobile phone or a mobile terminal via a camera module connector or directly.

前記実施例では、光硬化型接着剤を溜める凹部を、第１支持部材の上部周辺部に円周方向に沿って等間隔に４つ形成した場合について説明したが、本発明は４つに限るものでなく、１つの場合、又は４つ以外の複数個を円周方向に沿って等間隔若しくは不等間隔に形成した場合ついても利用することができる。   In the above embodiment, the case where four concave portions for storing the photocurable adhesive are formed at equal intervals along the circumferential direction in the upper peripheral portion of the first support member has been described, but the present invention is limited to four. It can be used even if it is one, or a case where a plurality other than four are formed at equal intervals or unequal intervals along the circumferential direction.

前記実施例では、光硬化型接着剤を溜める凹部を、第１支持部材に形成した場合について説明したが、本発明はこれに限るものでなく、第２支持部材に形成した場合、又は第１支持部材及び第２支持部材に形成した場合についても利用することができる。   In the above-described embodiment, the case where the concave portion for storing the photocurable adhesive is formed on the first support member is described. However, the present invention is not limited to this, and the case where the concave portion is formed on the second support member. It can utilize also about the case where it forms in a supporting member and a 2nd supporting member.

前記実施例では、固着面積を広くするために、光硬化型接着剤を溜めるための凹部が第１、第２支持部材の螺合部まで延設されている場合について説明したが、本発明はこれに限るものでなく、第１、第２支持部材の螺合部まで延設されていない場合についても利用することができる。   In the above embodiment, the case where the concave portion for storing the photocurable adhesive is extended to the threaded portions of the first and second support members in order to increase the fixing area has been described. It is not restricted to this, It can utilize also about the case where it is not extended to the screwing part of a 1st, 2nd support member.

前記実施例では、第１、第２支持部材が光を透過しない材料（例えば合成樹脂）で成形された場合について説明したが、本発明はこれに限るものでなく、第１、第２支持部材の少なくとも一方が光透過型材料で成形された場合についても利用することができる。
この場合、凹部なしで第１、第２支持部材の螺合部に外来光を当てることができるので、凹部の形成を省略し、螺合部に光硬化型接着剤を注入して短時間に第１支持部材と第２支持部材を固着できる。 In the embodiment, the case where the first and second support members are formed of a material that does not transmit light (for example, synthetic resin) has been described. However, the present invention is not limited to this, and the first and second support members are not limited thereto. It is also possible to use a case where at least one of these is formed of a light transmission type material.
In this case, extraneous light can be applied to the threaded portions of the first and second support members without the recess, so that the formation of the recess is omitted and a photocurable adhesive is injected into the threaded portion in a short time. The first support member and the second support member can be fixed.

前記実施例では、レンズの焦点距離のずれを防止するための弾性部材が係合部と当接部を具備した環状弾性体で形成され、その係合部が第１支持部材の係合段部に係合保持されたカメラモジュールについて説明したが、本発明はこれに限るものでなく、第１支持部材と第２支持部材の螺合によって弾性変形し、その弾性力で第１支持部材と第２支持部材の螺合による締め付け力を大きくしてレンズの焦点距離のずれを防止したカメラモジュールについても利用できる。
例えば、弾性部材が断面円形の環状弾性体（例えばＯリング）であって、その第１支持部材側の一部が螺合時に第１支持部材の先端面に形成された環状凹溝に係合されたカメラモジュールついても利用できる。
又は、第１支持部材が一体に成形されたネジ部と環状弾性体部とを具備し、ネジ部を剛性の高い材料で成形し、環状弾性体部を弾性材料で成形して弾性部材としたカメラモジュールについても利用できる。この場合、第１支持部材と第２支持部材を螺合するだけで自動的に弾性部材（環状弾性体部）が組み込まれ、組立工程を簡略化できる。 In the above-described embodiment, the elastic member for preventing the focal length shift of the lens is formed by the annular elastic body having the engaging portion and the contact portion, and the engaging portion is the engaging step portion of the first support member. However, the present invention is not limited to this, and the first support member and the second support member are elastically deformed by screwing between the first support member and the second support member. (2) It is also possible to use a camera module in which the tightening force by screwing the support member is increased to prevent the focal length of the lens from shifting.
For example, the elastic member is an annular elastic body (for example, an O-ring) having a circular cross section, and a part of the first support member side engages with an annular groove formed on the front end surface of the first support member during screwing. It is also possible to use a camera module.
Alternatively, the first support member includes an integrally formed screw portion and an annular elastic body portion, the screw portion is formed of a highly rigid material, and the annular elastic body portion is formed of an elastic material to form an elastic member. It can also be used for camera modules. In this case, the elastic member (annular elastic body portion) is automatically incorporated simply by screwing the first support member and the second support member, and the assembly process can be simplified.

前記実施例では、第１支持部材と第２支持部材の間に弾性部材を介在させたカメラモジュールについて説明したが、本発明はこれに限るものでなく、第１支持部材と第２支持部材の間に弾性部材を介在させないカメラモジュール（例えば図９の従来例のカメラモジュール）についても利用できる。  In the embodiment, the camera module in which the elastic member is interposed between the first support member and the second support member has been described. However, the present invention is not limited to this, and the first support member and the second support member The present invention can also be used for a camera module (for example, the conventional camera module of FIG. 9) in which no elastic member is interposed therebetween.

前記実施例では、基板と第２支持部材の固着強度を大きくするために、基板と第２支持部材の固着面の異形部分に対応する形状を、共に正方形環状の四隅を傾斜角度４５度の斜めに形成したカメラモジュールについて説明したが、本発明はこれに限るものでなく、基板の固着面の四隅を円弧形状や直角形状に形成し、第２支持部材の四隅を円弧形状に形成することによって、基板の固着面の四隅に第２支持部材の固着面の対応する部分より広い異形部分を形成したカメラモジュールについても利用できる。   In the above embodiment, in order to increase the fixing strength between the substrate and the second support member, the shape corresponding to the deformed portion of the fixing surface of the substrate and the second support member is set to the four corners of the square ring at an inclination angle of 45 degrees. However, the present invention is not limited to this, and the four corners of the fixing surface of the substrate are formed in an arc shape or a right angle shape, and the four corners of the second support member are formed in an arc shape. Also, the present invention can be used for a camera module in which irregular portions wider than the corresponding portions of the fixing surface of the second support member are formed at the four corners of the fixing surface of the substrate.

前記実施例では、基板と第２支持部材の固着面を略正方形環状に形成し、基板の固着面の四隅と一辺の中央に、第２支持部材の固着面の対応する部分より面積の広い異形部分を形成し、これらの異形部分に接着フィレットを形成したカメラモジュールについて説明したが、本発明はこれに限るものでなく、基板上の固着面の一部に、第２支持部材の固着面の対応部分より面積の広い異形部分を形成し、この異形部分に接着フィレットを形成したカメラモジュールについても利用することができる。
例えば、図７に二点鎖線で示すように、下側台座５２の各側壁に切欠き５７を形成することによって、基板１の固着面１５の四隅と各辺の中央に下側台座５２の固着面の対応する部分より面積の広い異形部分を形成し、これらの異形部分に接着フィレットを形成したカメラモジュールについても利用することができる。
又は、図７に実線で示す実施例から下側台座５２の一側壁に形成する切欠き５７を省略し、基板１の固着面１５の四隅にだけ異形部分１６〜１６を形成して接着フィレット６２〜６２を形成した場合、若しくは、台座の固着面の四隅を基板の固着面と同一形状とし、基板の固着面の各辺の中央にだけ異形部分を形成し、接着フィレットを形成したカメラモジュールついても利用することができる。 In the above-described embodiment, the fixing surface of the substrate and the second support member is formed in a substantially square ring shape, and is an irregular shape having a larger area than the corresponding portion of the fixing surface of the second support member at the center of the four corners and one side of the fixing surface of the substrate. However, the present invention is not limited to this, and the fixing surface of the second support member may be formed on a part of the fixing surface on the substrate. The present invention can also be used for a camera module in which a deformed portion having a larger area than the corresponding portion is formed and an adhesive fillet is formed in the deformed portion.
For example, as shown by a two-dot chain line in FIG. 7, the lower pedestal 52 is fixed to the four corners of the fixing surface 15 of the substrate 1 and the center of each side by forming notches 57 on each side wall of the lower pedestal 52. The present invention can also be used for a camera module in which deformed portions having a larger area than the corresponding portions of the surface are formed and an adhesive fillet is formed on these deformed portions.
Alternatively, the notch 57 formed on one side wall of the lower pedestal 52 is omitted from the embodiment shown by the solid line in FIG. 7, and the deformed portions 16 to 16 are formed only at the four corners of the fixing surface 15 of the substrate 1 to form the adhesive fillet 62. -62, or a camera module in which the four corners of the fixing surface of the pedestal have the same shape as the fixing surface of the substrate, and a deformed portion is formed only at the center of each side of the fixing surface of the substrate to form an adhesive fillet. Can also be used.

本発明の一実施例を示す図２の断面を示すもので、（a）はＡ−Ａ線拡大断面図、（ｂ）はＢ−Ｂ線部分拡大断面図である。FIG. 3 shows a cross section of FIG. 2 showing an embodiment of the present invention, wherein (a) is an AA line enlarged cross-sectional view, and (b) is a BB line partial enlarged cross-sectional view. 本発明の一実施例を示す平面図である。It is a top view which shows one Example of this invention. 図２の正面図である。FIG. 3 is a front view of FIG. 2. 図２の斜視図（接着剤の図示省略）である。FIG. 3 is a perspective view of FIG. 2 (illustration of an adhesive is omitted). 図１〜図４中のバレル２（環状弾性体４を係合保持し、オネジ部２６の図示を省略した。）を示す斜視図で、（a）は斜め上方から見た図、（ｂ）は（a）の上下を反転した図である。1 is a perspective view showing the barrel 2 in FIG. 1 to FIG. 4 (the annular elastic body 4 is engaged and held, and the male screw part 26 is not shown). (A) is the figure which reversed the upper and lower sides. 図１〜図４中の台座５（メネジ部５３の図示を省略した。）を示す斜視図で、（a）は斜め上方から見た図、（ｂ）は（a）の上下を反転した図である。FIGS. 1 to 4 are perspective views showing the pedestal 5 (the female screw portion 53 is omitted), where (a) is a view seen obliquely from above, and (b) is an upside down view of (a). It is. 基板１と台座５の固着面を示す斜視図で、（a）は台座５（メネジ部５３の図示省略した。）の固着面５５を示し、（ｂ）は基板１（撮像素子１１や回路素子１２〜１４の図示を省略した。）の固着面１５を示す。FIG. 4 is a perspective view showing a fixing surface between the substrate 1 and the pedestal 5, wherein (a) shows a fixing surface 55 of the pedestal 5 (the female screw portion 53 is not shown), and (b) shows the substrate 1 (the image sensor 11 and the circuit element). 12 to 14 are omitted). 基板１に固着された台座５にバレル２を螺合する前の状態を示す断面図である。It is sectional drawing which shows the state before screwing the barrel 2 to the base 5 fixed to the board | substrate 1. FIG. 従来例を示す断面図ある。It is sectional drawing which shows a prior art example.

符号の説明Explanation of symbols

１…基板
１５…基板１の固着面
１６、１７…固着面１５中の異形部分
２…バレル（第１支持部材の一例）
２６…オネジ部
３０…光硬化型接着剤
３１…凹部
５… 台座（第２支持部材の一例）
５３…メネジ部
５５…台座５の固着面
５６…ストッパー部
６０…接着剤
６１…接着層
６２、６３…接着フィレット
７…支持部材
DESCRIPTION OF SYMBOLS 1 ... Board | substrate 15 ... Adhering surface of the board | substrate 1 16, 17 ... Deformation part in the adhering surface 15
2 ... Barrel (an example of a first support member)
26 ... male screw part 30 ... photo-curing adhesive 31 ... concave part
5 ... Pedestal (example of second support member)
53 ... Female thread
55: Fixing surface of base 5 56: Stopper part
60 ... Adhesive 61 ... Adhesive layer 62, 63 ... Adhesive fillet 7 ... Support member

Claims (4)

撮像素子（１１）が配設された基板（１）と、レンズ（２５、２５）が支持された第１支持部材（２）と、第１支持部材（２）と螺合して第１支持部材（２）を支持するとともに、基板（１）上に固着された第２支持部材（５）とを具備し、第１支持部材（２）と第２支持部材（５）の螺合量でレンズ（２５、２５）の焦点距離の調整が可能なカメラモジュールであって、第１支持部材（２）と第２支持部材（５）の少なくとも一方に、第１支持部材（２）と第２支持部材（５）に跨がるとともに外来光の受光が可能な凹部（３１）を形成し、この凹部（３１）に注入された光硬化型接着剤（３０）によって第１支持部材（２）と第２支持部材（５）を固着したことを特徴とするカメラモジュール。   The substrate (1) on which the image sensor (11) is disposed, the first support member (2) on which the lenses (25, 25) are supported, and the first support member (2) are screwed together to provide the first support. A second support member (5) fixed on the substrate (1) is supported while supporting the member (2), and the first support member (2) and the second support member (5) are screwed together. A camera module capable of adjusting the focal length of the lenses (25, 25), wherein at least one of the first support member (2) and the second support member (5) has a first support member (2) and a second support member. A concave portion (31) capable of receiving extraneous light while straddling the support member (5) is formed, and the first support member (2) is formed by the photocurable adhesive (30) injected into the concave portion (31). And a second support member (5). 凹部（３１）は第１支持部材（２）と第２支持部材（５）の螺合部まで延設され、凹部（３１）に注入された光硬化型接着剤（３０）が、第１支持部材（２）と第２支持部材（５）の螺合部に侵入しない程度の高粘度を有していることを特徴とする請求項１記載のカメラモジュール。   The recess (31) extends to the threaded portion of the first support member (2) and the second support member (5), and the photocurable adhesive (30) injected into the recess (31) is the first support. 2. The camera module according to claim 1, wherein the camera module has a high viscosity that does not enter a threaded portion of the member (2) and the second support member (5). 第１支持部材（２）は、円筒体の外周面にオネジが形成されたオネジ部（２６）と、このオネジ部（２６）の上端開口部を閉塞する上板（２２）とを具備し、第２支持部材（５）は、円筒状内周面にオネジ部（２６）のオネジと螺合可能なメネジが形成されたメネジ部（５３）を具備し、凹部（３１）は、上板（２２）の周辺部に円周方向に沿って等間隔で形成された複数の凹部（３１）からなり、この凹部（３１）は第２支持部材（５）のメネジ部（５３）まで延設されていることを特徴とする請求項２記載のカメラモジュール。   The first support member (2) includes a male screw portion (26) having a male screw formed on the outer peripheral surface of the cylindrical body, and an upper plate (22) that closes the upper end opening of the male screw portion (26). The second support member (5) includes a female thread portion (53) in which a female thread that can be screwed with the male thread of the male thread portion (26) is formed on the cylindrical inner peripheral surface, and the recess (31) 22) comprises a plurality of concave portions (31) formed at equal intervals along the circumferential direction in the peripheral portion, and this concave portion (31) is extended to the internal thread portion (53) of the second support member (5). The camera module according to claim 2, wherein: 撮像素子（１１）が配設された基板（１）と、レンズ（２５、２５）が支持された第１支持部材（２）と、第１支持部材（２）と螺合して第１支持部材（２）を支持するとともに、基板（１）上に固着された第２支持部材（５）とを具備し、第１支持部材（２）と第２支持部材（５）の螺合量でレンズ（２５、２５）の焦点距離の調整が可能なカメラモジュールであって、第１支持部材（２）と第２支持部材（５）の少なくとも一方を光透過型材料で成形し、第１支持部材（２）と第２支持部材（５）の螺合部に注入された光硬化型接着剤で第１支持部材（２）と第２支持部材（５）を固着したことを特徴とするカメラモジュール。
The substrate (1) on which the image sensor (11) is disposed, the first support member (2) on which the lenses (25, 25) are supported, and the first support member (2) are screwed together to provide the first support. A second support member (5) fixed on the substrate (1) is supported while supporting the member (2), and the first support member (2) and the second support member (5) are screwed together. A camera module capable of adjusting the focal length of the lenses (25, 25), wherein at least one of the first support member (2) and the second support member (5) is formed of a light transmissive material, and the first support member is formed. A camera characterized in that the first support member (2) and the second support member (5) are fixed by a photo-curing adhesive injected into a screwed portion of the member (2) and the second support member (5). module.
JP2005150312A 2005-05-24 2005-05-24 Camera module Pending JP2006330121A (en)

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