200848830 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種鏡頭模組，特別是指一種適用於 可攜式電子產品的鏡頭模組。 【先前技術】 參閱圖1 ’為現有一種鏡頭模組7，包^ —環繞一轴線 X之承座71、一與該承座71螺接之鏡筒72、一沿該軸線χ δ又置於遠鏡同72内之鏡片單元73、一與該承座？！組裝且 對應該鏡片早元7 3之影像感測單元7 4，及一設置於該鏡片 單元73與影像感測單元74間之濾光片75，該影像感測單 元74包括一電路板741 ,及一設置於該電路板741之感測 器 742 〇 當该鏡頭模組7組裝完成後進行調焦時，由於該承座 71與該鏡筒72螺接處會因摩擦產生粉塵，並掉至該濾光片 75上而造成白晝面不良，雖然該濾光片75可直接蒸鍍在該 鏡片單元73之一鏡片，但是調焦時所產生之粉塵會直接掉 至忒感測器742上’同樣也會產生白晝面不良之問題。又 ，該承座71與該鏡筒72是以螺接方式接合，易產生同軸 度不良之問題，致使成像晝面中心非落在該感測器742之 形狀中心而影響成像品質。 【發明内容】 因此，本發明之一目的即在提供一種可避免白晝面不 良的鏡頭模組。 本發明之另一目的即在提供一種可避免產生同軸度不 5 200848830 良的鏡頭模組。 於組裝及降低生產 本發明之又一目的即在提供—種易 成本的鏡頭模組。 本發明之再一目的即在提供— 種不加大該承座體積卻 能增加光學有效徑的鏡頭模組。 於是’本發明的鏡頭模組包含 承座，及一鏡室單元 該承座包括一環繞一軸線之環壁，該環壁具有一内環 面0 該鏡室單兀是沿該軸線安裝於該承座内，並包括一主 鏡片’及-副鏡片’該主鏡片具有一中央部位、一圍繞該 中央部位且-體成型之延伸部位，及—由該中央部位盘延 伸部位共同包圍界定之容室’該中央部位具有二沿該軸線 間隔設置之光學有效面’該延伸部位具有一與該内環面滑 動配合之外周面，該副鏡片是容置於該容室内。 本發明之鏡室單元藉由該主鏡片之設置，不需利用鏡 筒即可組裝於該承座内，因此除可避免調焦時產生粉塵而 造成白畫面不良外，還可避免該鏡室單元與該承座產生同 軸度不良的問題，進而獲得較佳之成像品質，且減少該鏡 筒之設置，可進一步降低生產成本，及增加該鏡室單元之 光學有效徑。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 6 200848830 清楚的呈現。 參閱圖2,本發明之一較佳實施例包含—承座丄、一鏡 、=:、複數變位單元3、—黏朦4 (見圖6)、一影像感 測早7L 5，及一濾光片6。 配合參閱圖3，該承座i包括一環繞一轴線γ之環壁 =辟及—自該環壁11沿徑向朝該軸線Υ凸伸之擋緣12，該 孑土 11具有一内裱面1U，及—由一頂面凹 該擋緣12具有-抵止面121。 衣槽 配合參閱圖4、5 ’該鏡室單元2是沿該軸線γ安裝於 該承座i、内，並包括一主鏡片21、一副鏡# Μ、—與該主 鏡片21連接之頂蓋23，及—失設於該主鏡片^ 22間之遮光片24。該主鏡片21具有—中央部位叫、一圍 、凡該中央部位211且-體成型之延伸部位212，及—由該中 央部位2U與延伸部位212共同包圍界定且朝-物"側呈 ，放^容室213,其中，該中央部位211具有二沿該轴線 間隔设置之光學有效面214，該延伸部位具有一與該 表座1之内lu在該軸線丫方向上舆—圓周方向上均 呈滑動配合的外周面215,及—面向該承座ι之抵止面⑵ 的底端面叫。該副鏡片22是容置於該容室213内，並呈 有一中央部位221，及-圍繞該中央部位切且-體成叙 承靠部位如，其中，該承靠部位222之—頂端面是 該頂蓋23。 、 該鏡室单το 2之頂蓋23具有—沿徑向設置之蓋板加 、-自該蓋板23i周圍朝該承座i延伸之帽緣”2,及複數 7 200848830 設置於該帽緣232之調焦驅動部233,其中，該蓋板231中 央具有一入光孔234，结+m μ μ巾目緣232是伸入該承座1之環槽 2且與該延伸部位212之外周面2丨5呈緊配合，該延伸部 I212之—頂端面是貼靠於該蓋板⑶，在本實施例中，該 等调焦驅動部233是呈凹孔狀。 配合參閱圖3、4’該等變位單元3是設置於該承座i 早7G 2間’每—變位單元3包括—設置於該承座i 與該主鏡片21其中—者之凸輪件3i，及設置於該承座i與 、兄片21另外一者且與該凸輪件相頂抵之從動件Μ ’其中’該凸輪件31具有不同位高之-第-端311與一第 二端3^’及-連接該第—、第二端3ii、312之傾斜面313 ’在本實施例中，該凸輪件31是設置於承座1之抵止面 121，該從動件32是設置於該鏡室單元2之底端面216。 配合參閱圖6,該黏膠4是設置於該鏡室單元2之帽緣 232與該環壁丨丨的頂面之間。 該衫像感測單元5是與該承座丨組裝且對應該鏡室單 兀2，並包括一電路板51，及一設置於該電路板η之 器52。 … 該濾光片6是固設於該承座丨且沿該軸線γ方向與該 鏡至單7G 2相間隔排列。值得說明的是，該濾光片6也可 以疋以蒸链的方式替代，直接蒸鍍在鏡室單元2之其中一 見 、22的表面而形成濾光層，同樣可達到濾光之目的 參閱圖 、6，該鏡頭模組組裝完成後進行調焦時，可 8 200848830 藉由一與該鏡室單元2之該等調焦驅動部如配合之工具 (圖未不）或徒手轉動該頂蓋23，使每—變位單元3之從 在與其相頂抵之凸輪件31的傾斜面313上往復移 使1¾鏡至單70 2沿該轴線γ方向往復移動，當 該鏡室單元2移至所需之焦點距離時，再將該黏膠4黏合 於該鏡室單元2之帽鎊 之巾目緣232與該環壁11之頂面之間，以使 該鏡室單it2及該變位單元3保持定位。 ，由以上說明，可將本發明之優點歸納如下： 二、本發明之鏡室單元2是利用該主鏡片21而可滑動 °、且扁於5亥承座1内’非習知以鏡筒螺接於承座之方 =因此除易於組裝外’還可避免調焦時生粉塵而造成白 Γ之：：’且藉由該主鏡片21之外周面215承靠於該承座 面⑴’亦可避免該鏡室翠元2與該承座丨產生同 軸度不良之問題，進而獲得較佳之成像品質。 # 2本發明之鏡頭龍是以該主鏡片21取代f知之鏡 二口此可減少部品數量而降低生產成本，並能在 =二體積之條件下增加該鏡室單元2之光學有效徑， 而獲仔更佳之光學特性。 ㈣;:=的是，該等變位單元3之數目可依該承座1 興邊主鏡片21之尺寸大小，斗、从… ^ s又斤需的調焦精度而有所調 置一變位單元3時，該凸輪件”之傾斜面 ，节竽：： = =坡度，^可進行更為精細之難。另外 内…卜在調焦時同樣可使鏡室單元 ： 9 200848830 往復移動。 歸納上述’本發明抑— 乃之鏡至早70 2藉由該主鏡片21之設 置，除易於組裝外，、脊π扮々 避可避免調焦時生粉塵而造成白畫面 不良e亦可避免該鏡室單元2與該承座！產生同軸度不良 之門題it而改善成像品質。另外，本發明之鏡頭模組是 以该主鏡片21取获羽土拉々々 I知之鏡同，因此可減少部品數量而降 低生產成纟纟施在不改變該承座i體積之條件下增加該 鏡室單元2之光學有效經，而獲得更佳之光學特性，故確 實能達到發明之目的。 淮以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之，即大凡依本發”請二利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖 圖 構件； 1是現有一鏡頭模組之一剖面示意圖； 2是-立體分解圖，說日林發明之—較佳實施例的 圖3是一俯視圖，$明三變位單元之凸輪件於—承座 之一抵止面的配置情形； 圖4是一仰視圖，說明該等變位單元之從動件於一主 鏡片之一底端面的配置情形； 圖5是一剖面示意圖，說明該等蠻 予欠位早疋之從動件與 凸輪件於一鏡室單元調焦前之相對位置；及 圖6是一剖面示意圖，說明該等轡彳罝 予艾位早兀之從動件與 10 200848830 凸輪件於該鏡室單元調焦後之相對位置。 11 200848830 【主要元件符號說明】 1…… •…承座 231… •…蓋板 11 ••… …·環壁 232… …·帽緣 111… •…内環面 233··· •…調焦驅動部 112… •…環槽 234… •…入光孔 12••… …·擋緣 24••… —遮光片 121… •…抵止面 3…… —變位單元 2…… •…鏡室單元 31 …·· •…凸輪件 21 …·· •…主鏡片 311… •…第一端 211 ··· •…中央部位 312… •…第二端 212… •…延伸部位 313… —傾斜面 213… …·容室 32••… •…從動件 214… —光學有效面 4 ...... …·黏膠 215… •…外周面 5…… •…影像感測單元 216… —底端面 51 ····. •…電路板 22••… •…副鏡片 52··.·· •…感測器 221… •…中央部位 6…… •…濾光片 222… •…承靠部位 Y…… —轴線 23…… •…頂蓋 12200848830 IX. Description of the Invention: [Technical Field] The present invention relates to a lens module, and more particularly to a lens module suitable for portable electronic products. [Prior Art] Referring to FIG. 1 ' is a lens module 7 of the prior art, a socket 71 surrounding an axis X, a lens barrel 72 screwed to the socket 71, and a χ δ along the axis The lens unit 73, one and the seat in the far mirror? ! The image sensing unit 74 is assembled and corresponds to the filter 75 of the lens unit 73, and the filter 75 is disposed between the lens unit 73 and the image sensing unit 74. The image sensing unit 74 includes a circuit board 741. And a sensor 742 disposed on the circuit board 741. When the lens module 7 is assembled and assembled, the screw is generated by the friction between the socket 71 and the lens barrel 72, and is dropped to The filter 75 causes a white surface defect. Although the filter 75 can be directly evaporated on one of the lenses of the lens unit 73, the dust generated during focusing will fall directly onto the 忒 sensor 742. There is also the problem of poor white noodles. Further, the socket 71 and the lens barrel 72 are screwed together, which is liable to cause a problem of poor coaxiality, so that the center of the imaging pupil does not fall on the center of the shape of the sensor 742 to affect the image quality. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a lens module that avoids poor white surface. Another object of the present invention is to provide a lens module that avoids the generation of coaxiality. Assembly and Production Reduction Another object of the present invention is to provide an easy-to-cost lens module. Still another object of the present invention is to provide a lens module that does not increase the size of the socket but increases the optical effective diameter. Thus, the lens module of the present invention includes a socket, and a mirror chamber unit. The socket includes a ring wall surrounding an axis, the ring wall having an inner annular surface 0. The mirror chamber unit is mounted along the axis. Inside the socket, and including a main lens 'and a sub-lens', the main lens has a central portion, an extended portion surrounding the central portion, and the body is surrounded by the central portion of the disk The central portion has two optically effective surfaces spaced along the axis. The extended portion has a peripheral surface that is slidably engaged with the inner annular surface, and the secondary lens is received in the chamber. The mirror chamber unit of the present invention can be assembled in the socket without using the lens barrel by the arrangement of the main lens, so that the mirror chamber can be avoided in addition to avoiding dust generated during focusing and causing white image defects. The problem of poor coaxiality between the unit and the socket, thereby obtaining better imaging quality, and reducing the arrangement of the lens barrel, can further reduce the production cost and increase the optical effective diameter of the mirror unit. [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following description of a preferred embodiment of the accompanying drawings. Referring to FIG. 2, a preferred embodiment of the present invention includes a socket, a mirror, a =: a complex displacement unit 3, a glue 4 (see FIG. 6), an image sensing early 7L 5, and a Filter 6. Referring to FIG. 3, the socket i includes a ring wall surrounding an axis γ and a retaining edge 12 projecting from the ring wall 11 toward the axis in the radial direction. The bauxite 11 has an inner surface. 1U, and - the recessed edge 12 has a - abutting surface 121 from a top surface. Referring to Figures 4 and 5, the mirror chamber unit 2 is mounted in the socket i along the axis γ, and includes a main lens 21, a sub-mirror # Μ, a top connected to the main lens 21 The cover 23, and the light shielding sheet 24 that is lost between the main lenses 22 is provided. The main lens 21 has a central portion called a circumference, an extension portion 212 of the central portion 211 and a body shape, and a central portion 2U and an extension portion 212 are defined together and are oriented toward the object. The central portion 211 has two optically effective surfaces 214 spaced along the axis, the extended portion having a circle with the inside of the table 1 in the direction of the axis 舆-circumferential direction The outer peripheral surface 215 is a sliding fit, and the bottom end surface facing the abutting surface (2) of the bearing ι is called. The sub-lens 22 is received in the chamber 213 and has a central portion 221, and - is cut around the central portion and is a body-receiving portion, wherein the top surface of the bearing portion 222 is The top cover 23. The top cover 23 of the mirror chamber το 2 has a cover plate disposed radially, a cap edge 2 extending from the periphery of the cover plate 23i toward the socket i, and a plurality of 7 200848830 disposed on the cap edge a focusing drive unit 233 of the 232, wherein the cover plate 231 has a light entrance hole 234 in the center thereof, and the +m μ μ towel edge 232 extends into the ring groove 2 of the socket 1 and is outside the extension portion 212. The top surface of the extending portion I212 is in close contact with the cover plate (3). In the embodiment, the focusing driving portions 233 are in the shape of a concave hole. Referring to Figures 3 and 4 'The displacement unit 3 is disposed between the holder i and 7G 2 'each-displacement unit 3 includes a cam member 3i disposed in the holder i and the main lens 21, and is disposed at the same The follower i and the other one of the brothers 21 and the follower member abutting the cam member 其中 'where the cam member 31 has different heights - the first end 311 and the second end 3 ^ ′ - In this embodiment, the cam member 31 is disposed on the abutting surface 121 of the socket 1 , and the follower 32 is disposed in the mirror chamber The bottom of unit 2 The end face 216. Referring to Figure 6, the adhesive 4 is disposed between the cap 232 of the mirror unit 2 and the top surface of the ring wall. The shirt image sensing unit 5 is assembled with the socket. And corresponding to the mirror chamber unit 2, and includes a circuit board 51, and a device 52 disposed on the circuit board η. The filter 6 is fixed to the socket 丨 and along the axis γ direction Mirror to single 7G 2 phase spacing arrangement. It is worth noting that the filter 6 can also be replaced by steaming chain, directly vapor-deposited on the surface of the mirror unit 2, 22 to form a filter layer. The purpose of filtering can also be achieved. Referring to Fig. 6, when the lens module is assembled and adjusted, it can be 8 200848830 by a tool matching the focusing drive unit of the mirror unit 2 (Fig. No) or manually rotating the top cover 23 to reciprocate each of the displacement units 3 from the inclined surface 313 of the cam member 31 that abuts against it to reciprocate the mirror to the unit 70 2 in the direction of the axis γ When the mirror unit 2 is moved to the desired focal length, the adhesive 4 is adhered to the cap of the mirror unit 2 Between the 232 and the top surface of the annular wall 11 to maintain the position of the mirror chamber unit and the displacement unit 3. From the above description, the advantages of the present invention can be summarized as follows: 2. The mirror chamber unit of the present invention 2 is slidable by the main lens 21, and is flat in the 5 hai socket 1 'unknown to the side of the lens barrel screwed to the socket = therefore, in addition to easy assembly, it can also avoid dust caused by focusing The white scorpion:: 'and the outer peripheral surface 215 of the main lens 21 bears against the bearing surface (1)' can also avoid the problem of poor coaxiality between the mirror chamber Cuiyuan 2 and the socket cymbal, thereby obtaining Good image quality. #2 The lens dragon of the present invention replaces the mirror lens with the main lens 21, thereby reducing the number of parts and reducing the production cost, and increasing the optical effective diameter of the mirror unit 2 under the condition of two volumes. Get better optical properties. (4);: =, the number of the displacement units 3 can be adjusted according to the size of the main lens 21 of the seat 1 , the bucket, the adjustment accuracy of the ... ^ s and the required adjustment In the case of the position unit 3, the inclined surface of the cam member, the knot:: = = slope, ^ can be made more difficult. In addition, the inner chamber can also make the mirror unit: 9 200848830 reciprocating. In summary, the above-mentioned invention can prevent the mirror from being formed by the arrangement of the main lens 21, in addition to being easy to assemble, and avoiding the white dust caused by the dust when the focus is adjusted. The chamber unit 2 and the socket have a problem of poor coaxiality and improve the image quality. In addition, the lens module of the present invention is obtained by the main lens 21, and thus the lens can be reduced. The number of parts is reduced, and the production of the device is increased without increasing the volume of the seat i to increase the optical efficiency of the mirror unit 2, thereby obtaining better optical characteristics, so that the purpose of the invention can be achieved. Only for the preferred embodiment of the present invention, when Embodiment of the present invention is defined, i.e. almost all made under this "Please III and scope of the invention described and simple modifications and equivalent content made of, are still within the scope of the genus of this invention patent covers. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a lens module; 2 is an exploded view, and FIG. 3 is a top view of a preferred embodiment. Figure 4 is a bottom view showing the arrangement of the follower of the displacement unit on a bottom end surface of a main lens; Figure 5 is a view of the arrangement of the cam member of the position unit; A cross-sectional view showing the relative positions of the follower and the cam member before focusing on a mirror unit; and FIG. 6 is a schematic cross-sectional view showing the position of the 辔彳罝The relative position of the follower of the cymbal and the 10 200848830 cam member after focusing on the mirror unit. 11 200848830 [Explanation of main component symbols] 1... •...seat 231... •...cover 11 ••...·ring 232...·cap rim.........inner ring 233··· •...focus Drive unit 112... •...ring groove 234... •...light hole 12••...·Block edge 24••...—shading sheet 121...•...stop surface 3...——displacement unit 2... •...mirror Chamber unit 31 ...···...cam member 21 ...···...main lens 311...•...first end 211 ····...center portion 312...•...second end 212...•...extension 313...-inclined Face 213 ... ... chamber 32••... •... follower 214... - optical effective surface 4 ... ... glue 215... • outer peripheral surface 5... • image sensing unit 216... —Bottom end face 51 ····.•...Circuit board 22••... •...Sub-lens 52·····•...Sensor 221... •...Center part 6...•...Filter 222... •... Bearing part Y... - axis 23... • top cover 12