1329211 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結構，特別是指一種生產時 可防止溢膠的小型化鏡頭。 【先前技術】 參閱圖1、圖2，為現有一種裝設於一照相手機（圖未 示）内的鏡頭1，該鏡頭1具有一鏡筒U、一鏡片單元12 ’及一固定壓環13。 該鏡筒11具有一圍繞一軸線L的周壁ill，及一容室 112。該周壁ill具有一第一開孔113、一第二開孔114，及 一呈階級狀的内周面115。該鏡片單元12是設置於該容室 112内，由該第一開孔113至該第二開孔114依序分別是一 第一、第二、第三 '第四鏡片121、122、123、U4，該等 鏡片121、122、123、124彼此互相抵靠。該固定壓環13 抵靠於該第一鏡片121後，並以點膠方式將一黏膠14黏於 該固定壓環13與該内周面115,使該鏡片單元12固定於該 鏡筒11内。 就小型化鏡頭而言，由於上述鏡頭1本身體積已較小 ’因此該鏡片單元12的一光學有效徑φ相對較小，使該照 相手機内的一感光元件（圖未不）接收的光線較少而且有 較低拍攝品質。而採用上述該固定壓環13壓制該鏡片單元 12，於設計該鏡片單元12時，在該光學有效徑〇與該鏡筒 11内周面115之間需預留供該固定壓環13壓制的一預設寬 度D，於此情況下，若欲增加該光學有效徑φ，唯有增加該 1329211 鏡頭1的直徑才能達成’如此將使該鏡頭1的體積增加；_ 反之，若欲使該鏡頭1小型作，則只能犧牲該光學有效徑 φ，無法兼顧該鏡頭1小型化與較大的光學有效徑φ。且 ，在點膠過程中，通常是將該黏膠14環繞黏合於該固定屋 環13與該内周面115，但經常發生該黏膠14溢出而沾污到 該第一鏡片121的光學有效徑Φ内，造成該鏡頭1影像不 良而降低生產良率。 【發明内容】 因此’本發明之一目的，即在提供一種於生產時可防 止溢膠之小型化鏡頭。 本發明之.又一目的，即在提供一種更加小型化之鏡頭 〇 本發明之再一目的，即在提供一種不加大鏡筒外徑卻 能增加光學有效徑的小型化鏡頭。 於是，本發明小型化鏡頭是包含一鏡筒，及一鏡片單 元。該鏡筒具有一圍繞一軸線而界定出一容室的周壁、一 連通該容室的開放端，及—連通該容室且與該開放端沿該 轴線相反設置的開孔端，該開放端具有—第—開孔，該開 孔端具有一對應該第一開孔的坌_ 阀札的第一開孔，該周壁具有一圍 繞該谷室的内周面、一與贫肉闲 興这内周面相背設置的外周面、至 少—由該外周面貫穿續rib m -y- —. … 連通該容室且間隔設置的 點耀槽，及至少二鄰近兮笸 蝴苐-開孔的開槽部，每一開槽部 八有一連接該内、外周面的第_ 吐 布 弟一、第三面，該第一 、第二面是彼此相對，兮筮__ 该苐二面是連接於該第一、第二面. m 6 間該鏡片單元是沿該抽線設置於該容室内，並包括_ 第鏡片，該第_鏡片鄰近該第—開孔，該第一鏡片具有 一配合該内周面的外環面’該等點膠槽是對應該外環面， 該點勝槽是由該第一、筐-、筮_ 罘 弟一弟二面與該第一鏡片的局部 衣面’、同包圍界^出。藉由上述’達到生產時可防止溢 #、使鏡頭更加小型化或加大該鏡頭的光學有效徑的功效 0 【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 清楚的呈現。 如圖3、4、5所示，分別是本發明不包含一黏膠5的 體示思圖、包含一黏膠5的一側面剖視圖，及一局部 立體不思圖。本發明小型化鏡頭之較佳實施例是可裝設於 ，'有照相功$的手機（圖未示）上。該鏡頭包含—鏡筒2、 一鏡片單元3、二遮光片4，及該黏膠5。 該鏡筒2具有一圍繞一軸線L1而界定出一容室22的 周壁21、一連通該容室22的開放端23，及一連通該容室 22且與該開放端23沿該軸線u相反設置的開孔端24。 該周壁21具有一圍繞該容室22且呈階級狀的内周面 211、—與該内周面211相背設置的外周面212，及四個鄰 近該開放為23且貫穿該内、外周面211、212而連通該容室 22的開槽部213。每一開槽部213分別具有一連接該内、 外周面211'212的第一、第二、第三面214、215、216。 1329211 該第一、第二面214、215是彼此平行相對，該第三面216 疋位於該第一、第二面214、215之間而連接該第一、第二 面 214、215。 該開放端23具有一第一開孔231，該開孔端24具有一 對應該第一開孔231的第二開孔241。 該鏡片單元3是沿該軸線L1設置於該容室22内，並 包括由該第-開孔231至該第二開孔241依序設置的一第 一、第二、第三、第四鏡片31、32、33、34。 該第一鏡片31是鄰近該第一開孔231，並具有一配合 該周壁内周面211的外環面311。該等開槽部213是間 隔形成於該周壁21而對應該外環面311，且每一開槽部213 均與該第-鏡片31的外環面311界定出一點膠槽Η?，即 ’每一點膠槽217是由該第一、第二、第三面214、215、 216與該第—鏡片31的局部外環面3ιι共同包圍界定出。 例中’該第三面216沿該周壁21圓周方向延伸的長 又疋為L3毫米（mm)’該第—鏡片31界^該點谬槽 的局:外環面311的抽向長度是為〇 5毫米^ 片該周壁21圓周方向延伸的長度，是該第-鏡 ‘卿槽217的局部外環面311的轴向長度的 該二遮光片4分別是位於該第一 '第二鏡片 :片，it:第三鏡4 m之間。本實施例中，該遮 片的材質疋包含聚酯與碳黑。 組裝該鏡頭時，依序將該第四鏡片34、該第三鏡片Μ [S3 8 、其中^一遮光片4、該裳-会E~y 茨弟一鏡片32 ’及另—遮光片4由該 第一開孔231放入該交宮90向 从八涿合至.22内。接著，將該第一鏡片31 由該第—開孔231放入該容室22内緊壓前述構件，此時， 該第-鏡片31的外環面311是對應該等開槽部213，且每 一開槽部213的第—、第二、第三面Hus與該 外環面311的局部則共同界定出該點膠槽217，可供點膠。 待作業人員將該輯5分別滴人該等四個點膠槽217内而 分別接觸該等第-、第二、第三面214、2i5、2i6與該外 環=311 ’待該黏谬5固化後，該第一鏡片31即固定於該 鏡筒2内。本實施例中是採㈣UV膠的方法將該第一鏡片 31與該鏡筒2進行黏合，再施予uv光照射使仍膠硬化 而固定。 經由以上的說明，可以將本發明的優點歸納如下： 一、本發明的該小型化鏡頭，該黏膠5是接觸該第一 鏡片31的外環面311 ’而非與光學有效徑同側的端面，因 此，可大幅減少溢膠於該光學有效徑〇1内的情形發生。此 外，也只需針對四個點膠槽217進行點膠而不需整圈點朦 ，因此’可減少該黏膠5的用量。 二、由於每一點膠槽217是被該第一、第二、第三面 ，所以，將該黏膠 214、215、216與該外環面311所界定出 5.直接滴入該等點膠槽217内即可固定該鏡片單元3。如圖 1、3所示’相較於習知技術，本發明不需要另外使用該固 定壓環13固定鏡月及提供點膠平台，因此，本發明的該鏡 片單元3之光學有效徑Φ1與該内周面211的距離$可以更 •所以可採用比習知鏡筒11外徑更小的鏡筒2，而使鎳 =更加小型化，或是維持本發明該鏡筒2的外徑與習知鏡 筒11相虽，但可具有更大的光學有效徑Φ1而達到更好的 光學特性。 三、不需另外設計與製造該固定壓環13，不但節省零 件成本’作業人員組裝該鏡頭時也不需組裝該固^：壓環13 ，因此可加快生產速度而提高該鏡頭的產量。 歸納上述，本發明之小型化鏡頭，該等開槽部213的 點膠槽217是由該第一、筐-、筮- 及w必矛 弟一第二面214、215、216與 鏡片31的外環面311共同界定出，並藉由將該黏膠5滴入 該等點膠槽217内而同時接觸該第一、第二、第三面214、 215、216及该外環面311，可避免溢膠的情形發生，並使該 光學有效徑Φ1與該内周面211的距離s可以更小，進而使 鏡頭更加小型化，或是加大該光學有效徑φΐ，故確實能達 到發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 月巨以此限定本發明實施之範圍，即大凡依本發明申請專利 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1是現有一種裝設於一照相手機的鏡頭之一立體示 t 回 · 圆， 圖2是現有該鏡頭的一側面剖視圖，說明供一固定壓 環安裝的一預設寬度使該鏡頭的一光學有效徑無法加大； m 10 1329211 圖3是本發明小·型化鏡頭一較佳實施例不包含一黏膠 之一立體示意圖； . 圖4是該較佳實施例的一側面刮視圖，說明一光學有 效徑與一内周面的距離變小；及 圖5是該較佳實施例的的一局部立體示意圖，說明一 黏膠黏合於一第一、第二、第三面及一外環面。 11 1329211 【主要元件符號說明】 L1 ··· …·軸線 23…· Φ 1… …·光學有效徑 231 ··· …·第一開孔 S…… …·距離 24··· •…開孔端 2…… ΛΑ. Λ*1 …鏡闾 241 ·· •…第二開孔 21 ·..·· •…周壁 3…… •…鏡片單元 211 · •…内周面 31…·· …·第一鏡片 212… •…外周面 311 ··· •…外環面 213… •…開槽部 32…· •…第二鏡片 214… .…第一面 33·.·.· •…第三鏡片 215… —苐一面 34…… .…第四鏡片 216… …第三面 4 ....... -…遮光片 217 .... …·點膠槽 5 ....... •…黏膠 22…… …容室 [s ] 121329211 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a lens structure, and more particularly to a miniaturized lens which can prevent overflow of glue during production. [Prior Art] Referring to FIG. 1 and FIG. 2, there is a lens 1 installed in a camera phone (not shown). The lens 1 has a lens barrel U, a lens unit 12' and a fixed pressure ring 13 . The lens barrel 11 has a peripheral wall ill surrounding an axis L, and a chamber 112. The peripheral wall ill has a first opening 113, a second opening 114, and a stepped inner peripheral surface 115. The lens unit 12 is disposed in the chamber 112. The first opening hole 113 to the second opening hole 114 are sequentially a first, second, and third 'fourth lens 121, 122, 123, respectively. U4, the lenses 121, 122, 123, 124 abut each other. After the fixed pressure ring 13 abuts against the first lens 121, a glue 14 is adhesively adhered to the fixed pressure ring 13 and the inner circumferential surface 115 to fix the lens unit 12 to the lens barrel 11 . Inside. In the case of a miniaturized lens, since the lens 1 itself has a small volume, the optical effective diameter φ of the lens unit 12 is relatively small, so that a light-receiving element (not shown) in the camera phone receives light. Less and have lower quality. The lens unit 12 is pressed by the fixed pressure ring 13 . When the lens unit 12 is designed, the fixed pressure ring 13 is reserved between the optical effective diameter 内 and the inner circumferential surface 115 of the lens barrel 11 . a preset width D. In this case, if the optical effective diameter φ is to be increased, only the diameter of the 1329211 lens 1 can be increased to achieve 'this will increase the volume of the lens 1; _ conversely, if the lens is to be made In the case of a small work, the optical effective diameter φ can only be sacrificed, and the lens 1 can be made smaller and the optical effective diameter φ can be made small. Moreover, in the dispensing process, the adhesive 14 is usually adhered to the fixed house ring 13 and the inner peripheral surface 115, but the optical adhesive 14 overflows frequently to be optically effective to the first lens 121. Within the diameter Φ, the lens 1 image is poor and the production yield is lowered. SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a miniaturized lens that can prevent spillage during production. A further object of the present invention is to provide a lens which is more compact. A further object of the present invention is to provide a miniaturized lens which can increase the optical effective diameter without increasing the outer diameter of the lens barrel. Thus, the miniaturized lens of the present invention comprises a lens barrel and a lens unit. The lens barrel has a peripheral wall defining a chamber around an axis, an open end communicating with the chamber, and an opening end communicating with the chamber and opposite the axis along the open end, the opening The end has a first opening, the opening end has a pair of first opening of the first opening of the 坌_ valve, the peripheral wall has an inner peripheral surface surrounding the valley, and a leisurely The inner circumferential surface of the inner circumferential surface opposite to each other, at least - the peripheral surface extending through the continuous rib m -y - - ... is connected to the chamber and spaced apart, and at least two adjacent to the butterfly - opening a slotted portion, each slotted portion 8 has a first and a third surface connecting the inner and outer peripheral surfaces, the first and second faces are opposite to each other, and the two sides are connected Between the first and second faces, the lens unit is disposed in the chamber along the drawing line, and includes a first lens, the first lens is adjacent to the first opening, and the first lens has a matching The inner circumferential surface of the outer ring surface 'the dispensing groove is corresponding to the outer ring surface, the point winning slot is by the first, the basket -, 筮 _ 罘Brother two first lens surface and the partial surface coating ', together with the enclosed circles ^ out. The above-mentioned and other technical contents, features and effects of the present invention can be achieved by the above-mentioned "preventing production can prevent overflow #, making the lens more compact or increasing the optical effective diameter of the lens." A detailed description of a preferred embodiment of the drawings will be apparent. As shown in Figures 3, 4 and 5, respectively, a schematic view of the present invention which does not include a glue 5, a side cross-sectional view including a glue 5, and a partial perspective view. A preferred embodiment of the miniaturized lens of the present invention is mountable on a mobile phone (not shown) having a camera function. The lens comprises a lens barrel 2, a lens unit 3, two light shielding sheets 4, and the adhesive 5. The lens barrel 2 has a peripheral wall 21 defining a chamber 22 around an axis L1, an open end 23 communicating with the chamber 22, and a chamber 22 communicating with the opening end 23 along the axis u. The open end 24 is provided. The peripheral wall 21 has a stepped inner peripheral surface 211 surrounding the chamber 22, an outer peripheral surface 212 disposed opposite the inner peripheral surface 211, and four adjacent openings 23 extending through the inner and outer peripheral surfaces. 211 and 212 communicate with the grooved portion 213 of the chamber 22. Each of the grooved portions 213 has a first, second, and third faces 214, 215, and 216 that connect the inner and outer peripheral faces 211'212, respectively. 1329211 The first and second faces 214, 215 are parallel to each other, and the third face 216 is located between the first and second faces 214, 215 to connect the first and second faces 214, 215. The open end 23 has a first opening 231 having a second opening 241 corresponding to the first opening 231. The lens unit 3 is disposed in the chamber 22 along the axis L1, and includes a first, second, third, and fourth lenses sequentially disposed from the first opening 231 to the second opening 241. 31, 32, 33, 34. The first lens 31 is adjacent to the first opening 231 and has an outer annular surface 311 that fits the inner peripheral surface 211 of the peripheral wall. The grooved portions 213 are spaced apart from the peripheral wall 21 to correspond to the outer annular surface 311, and each of the grooved portions 213 defines a little glue groove with the outer annular surface 311 of the first lens 31, that is, Each of the glue grooves 217 is defined by the first, second, and third faces 214, 215, 216 and a partial outer ring face 3 of the first lens 31. In the example, the length of the third surface 216 extending along the circumferential direction of the peripheral wall 21 is L3 mm (mm). The first lens 31 is the point of the groove: the length of the outer ring surface 311 is 〇 5 mm ^ The length of the peripheral wall 21 extending in the circumferential direction is the axial length of the partial outer annular surface 311 of the first mirror 'clear groove 217. The two light shielding sheets 4 are respectively located in the first 'second lens: Piece, it: third mirror between 4 m. In this embodiment, the material 疋 of the mask comprises polyester and carbon black. When the lens is assembled, the fourth lens 34, the third lens Μ [S3 8 , wherein the visor 4 , the slap - E y 茨 一 lens 32 ′ and the other visor 4 are sequentially The first opening 231 is placed in the yoke 90 from the occlusion to the .22. Then, the first lens 31 is placed in the chamber 22 by the first opening 31 to press the member. At this time, the outer ring surface 311 of the first lens 31 corresponds to the groove portion 213, and The first, second, and third faces Hus of each of the grooved portions 213 and the portion of the outer annular surface 311 together define the dispensing groove 217 for dispensing. The operator selects the series 5 into the four dispensing tanks 217 to respectively contact the first, second, third faces 214, 2i5, 2i6 and the outer ring = 311 'to be adhered to the adhesive 5 After curing, the first lens 31 is fixed in the lens barrel 2. In this embodiment, the first lens 31 is bonded to the lens barrel 2 by the method of picking up the (four) UV glue, and then the uv light is applied to harden the gel and fix it. Through the above description, the advantages of the present invention can be summarized as follows: 1. The miniaturized lens of the present invention, the adhesive 5 is in contact with the outer annular surface 311 ' of the first lens 31 instead of being on the same side as the optical effective diameter. The end face, therefore, can greatly reduce the occurrence of overflow glue in the optical effective diameter 〇1. In addition, it is only necessary to dispense the four dispensing tanks 217 without a full turn, so that the amount of the adhesive 5 can be reduced. 2. Since each glue groove 217 is the first, second, and third faces, the adhesive 214, 215, 216 and the outer ring surface 311 are defined. 5. directly dropped into the dots. The lens unit 3 can be fixed in the glue tank 217. As shown in FIG. 1 and FIG. 3, the present invention does not need to additionally use the fixed pressing ring 13 to fix the mirror and provide a dispensing platform. Therefore, the optical effective diameter Φ1 of the lens unit 3 of the present invention is The distance of the inner peripheral surface 211 can be made more. Therefore, the lens barrel 2 having a smaller outer diameter than the conventional lens barrel 11 can be used to make the nickel = more compact, or to maintain the outer diameter of the lens barrel 2 of the present invention. Although the conventional lens barrel 11 phase, it can have a larger optical effective diameter Φ1 to achieve better optical characteristics. Third, there is no need to separately design and manufacture the fixed pressure ring 13, which not only saves the cost of the parts. The operator does not need to assemble the fixed pressure ring 13 when assembling the lens, so that the production speed can be increased and the output of the lens can be improved. In summary, in the miniaturized lens of the present invention, the dispensing groove 217 of the grooved portion 213 is formed by the first, the basket, the 筮-, and the second surface 214, 215, 216 and the lens 31. The outer ring faces 311 are defined together, and simultaneously contact the first, second, third faces 214, 215, 216 and the outer ring face 311 by dropping the glue 5 into the glue grooves 217. The occurrence of overflowing can be avoided, and the distance s between the optical effective diameter Φ1 and the inner peripheral surface 211 can be made smaller, thereby further miniaturizing the lens or increasing the optical effective diameter φΐ, so that the invention can be achieved. The purpose. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is limited by the scope of the present invention, that is, the simple equivalent change of the patent application scope and the description of the invention. Modifications are still within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conventional lens mounted on a camera phone. FIG. 2 is a side cross-sectional view of the prior art lens, illustrating a preset for mounting a fixed pressure ring. The width of the optical effective path of the lens cannot be increased; m 10 1329211 FIG. 3 is a perspective view of a preferred embodiment of the small lens of the present invention without a glue; FIG. 4 is a preferred embodiment a side view of the blade, showing that the distance between an optical effective path and an inner peripheral surface becomes smaller; and FIG. 5 is a partial perspective view of the preferred embodiment, illustrating that a glue is bonded to a first, second, The third side and an outer ring surface. 11 1329211 [Description of main component symbols] L1 ··· ...·Axis 23...· Φ 1... ...· Optical effective diameter 231 ·····The first opening S.........·The distance 24··· •...Opening End 2... ΛΑ. Λ*1 ...mirror 241 ·· •...second opening 21 ·..···...peripheral wall 3...•...lens unit 211 ·•...inner peripheral surface 31...··...· First lens 212... • outer peripheral surface 311 ···•... outer ring surface 213... •...grooved portion 32...·...second lens 214....first surface 33·.·.·... third Lens 215... - one side 34 ... .... fourth lens 216 ... ... third side 4 .... - ... shading sheet 217 .... .... dispensing tank 5 .... •...Viscose 22...... ...室室[s ] 12