200909900 九、發明說明： 【發明所屬之技術領域】 ★本發明涉及光學系統領域，尤其涉及一種鏡筒及其製 ia·方法及採用該鏡筒之鏡頭模組。 【先前技術】 隨著攝像技術之發展，鏡頭模組於各 置中得到廣泛應用，鏡頭模組與各種便攜式電子^ = 等之結合’更得到眾多消費者之青睞。鏡頭模組 L吊L括鏡筒以及收容於鏡筒中之光學元件。該光學 包括鏡片、濟光片、及用α K- & u 如間隔環等慮…用以間隔鏡糊光片之間隔部件， 鏡頭模組中之鏡筒—般係採用塑膠件，利用塑膠 t㈣製造料量生產；“晝錢雌組之設計往 ^用^片式鏡片之組合，因此，鏡筒為配合多片鏡 縣取内壁多階式之設計，如圖5及圖 為傳統塑膠鏡筒1〇0之示意圖。該鏡筒·之内壁1〇1上 數階台皿’用於鏡頭模組内之鏡片及其他各光學元 承 '於該階臺上。但因塑膠成型會有冷卻收縮之問題存 ;致鏡筒100内壁101之複數階台搬 生尺寸誤差。這樣的誤差往往超過光學 月〜吟之公差範圍；同轴度不佳之鏡筒衍生出鏡片光轴偏 問題’造成鏡頭解析能力差及生產良率低等嚴重之問 通常之調整方法係通過調整製作鏡筒之模具之精度， 200909900 來來之鏡筒内壁之階梯狀部分具有較高之同轴度， 修正鏡頭模組與鏡筒之中心線之間之位置偏差之效 將製t鏡筒之模具之精度要求較高，使用該方法 將化費車父長之時間和較高之成本，不利於提高生產效率。 r片：此：：必要提供一種同軸度精度較高，不容易發生 =偏心且修改設計較為方便之鏡筒及其製造方法。 【發明内容】 有鏗於此，提供—種同軸度精度較高，不 =心且修改設計較為方便之鏡筒及其製造方法實為必 -採Π = 種鏡筒’用於鏡頭模組中，該鏡筒包括 〜心居；方法一體成型之—塑膠外筒和一金屬内 :::金屬内筒之内倒壁上具有至少-個環繞内侧壁= σ 用於承載光學元件。 本發明提供一種製造上述 ^ 驟：提供一金屬圓 兄间之方法’其包括以下步 用欲入式成型方法η屬圓筒置於成型機模腔中， 成品;將該鏡筒半成品之金屬圓丄二屬固问之鏡同丰 加工之方法加工出至少一 之内側壁採用精密機械 筒。 祗繞内側壁之凸台，即製成一鏡 本發明运提供一種操用卜、十拉 模組包括-鏡筒及至少一之鏡頭模組，該鏡頭 筒包括-賴入式:型ΓΠΓ之光學元件，該鏡 金屬内筒，該金屬内筒之内側壁塑膠外筒和- 上具有至少一個環繞内側 7 200909900 壁之凸台’用於承載該至少一個光學元件。 由於該鏡筒採用金屬内筒，故可避免傳統塑膠鏡筒因 膠材冷卻收縮所產生之尺寸偏差問題，而金屬内筒可採用 精密加工方法來進行内壁上之階梯狀凸台之加工。因此， 加工精度較高，與傳統塑膠鏡筒通過一體成型所形成之階 梯狀凸台相比，其同心度大大提高。且由於更改設計只需 更改機械加工參數，而不需更改模具設計，因此非常方便 快捷且成本大為降低。 相較於先前技術，本發明提供之鏡筒具有如下優點： 鏡筒之同心、度精度較高，不容易發生鏡片偏心，且修改設 計十分方便，維護成本大大降低。 又 【實施方式】 下面將結合附圖，對本發明實施例作進一步之詳細說 —“凊參閱圖1及圖2,本發明實施例提供之鏡筒，用於 頭模組中，該鏡筒包括一塑膝外冑10及一金屬内筒u、c 該塑膠外筒10為圓柱體，其外形形狀與常見鏡頭模 之鏡筒相似。於該塑膠外筒1〇之外壁上，可設置一此 狀(圖未示^用於與鏡頭模組之鏡座相互固; Π亥塑膠外埼10採用塑膠材料製成。 等，並U之外形結構可為錐形’圓筒形或階梯 需要而設置’於本實施财，該金屬 同U為圓筒形。 旬' 該金屬内筒11具有一内側壁和-外側壁120。. 200909900 ':壁110上具有至少-個環繞内側壁之凸台m。該凸a 片：ΓΓ承載鏡頭模組之各個光學元件，諸如； 网—濾光片等光學元件。於本實施例中，該凸A ill之數目為四個，可設置複數個鏡片及光學元件等。。 金屬内筒π之内側二鏡…為中心呈階梯狀排佈於 密機械加工方法力:Γ!該複數個凸台111可利用精 =如，採用CNC加工機床同轴加工完成該鏡筒二 數凸台1U，其同心度誤差可控制於5_以内 产之：：工後測得之數據。而普通射出成型鏡筒内之階 %之同心度誤罢奶* ^ 1 <丨白 很多因素η ，。但是由於射出成型會受到 產品都不二:’例如夥料之溫度、壓力，每一模射出之 何之#ft目同，其誤差相對較大。相比，採用金屬内 同之鏡同其精密度更加容易控制。 屬円 =金屬内筒U所用材料可選自：銅 碳鋼、不銹鋼，或銅、-1、錄、鈦之中Λ、:種 金屬之合金。於太给 主夕兩種 金。 、本例中，該金屬内筒π之材料為銅合 ::屬内筒η和該塑膠外筒10 =成型方法進—式射出成型(1_二) 之金屬内包覆金屬件之成型技術，原理係將欲包覆 達到金屬零件埋人塑膠件裏之效果。、人塑膠同k 優選地’該金屬内筒n之外側壁120上可設置諸如表 200909900 面咬花、暗纹及各種凹凸結構’用於使金屬内筒u和塑膠 夕Μ 1〇結合緊密’避免於對金屬内筒u進行機械加工時: 該金屬内筒11和塑膠外筒1〇分離。 本發明提供-種鏡筒製造方法，用於製造上 同，其包括以下步驟：提供一金屬圓筒21;將該金屬 灯置於成型機模腔中，用嵌入式成型方法形成一内部包裹 有該金屬圓筒21之鏡筒半成品2〇;將該鏡筒半成品2〇之 :屬圓筒之内側壁211加工出至少一環繞内側壁之凸 :、:即製成一鏡筒。如圖3所示’為採用該方法製造之鏡 同半成品20之立體示意圖。 該鏡筒半成品20内部包裹一金屬圓筒21。該金屬圓筒 21之外形結構可為錐形、圓筒形或階梯形。於本實施例中， 該金屬圓筒21之外形結構為圓筒形。 將該金屬圓筒21之内側壁211上加工出至少一凸台， P形成了上述鏡筒之金屬内冑u。該凸台可採用精密機械 辟之方法形成。採用此加工方法可於金屬圓筒21之内侧 土 211上加工出複數個凸台。該複數個凸台以鏡筒中心為 中心呈階梯狀排佈於金屬圓筒21之内側壁211上。該複數 個凸台可控制其同心度誤差於5_以内。 該金屬圓筒21和該鏡筒半成品20之塑膠外筒22 —體 成型’其可採用“式成型方法進行製造。 —俊選地，該金屬圓筒21之外側壁上可設置諸如表面咬 化口暗、’文或各種凹凸結構，用於使金屬圓筒和該鏡筒半 成20之塑膝外筒22結合緊密，避免於對金屬圓筒μ進 200909900 行機械加工時，該金屬圓筒21與歸外筒22分離。 所不，為金屬圓筒21夕々is、日丨η* 简圓冋21之外測壁上設置表面咬花212之 園。 /卜思 本發明還提供一種鏡頭模組，包括一採用上述之 及至少-個置於鏡筒内之光學元件。該鏡筒包括—採用與 入式成型方法—體成型之一塑膠外筒1〇和一金屬内筒‘ 該金屬内同11之内相]辟1 1 n l日士 γ , < π側璧110上具有至少一個環繞内側壁之 凸台111，用於承載該至少一個光學元件。 5乂至夕個光學元件之兩個端部可承載於該凸台^ 上，該光學元件之尺寸設置與凸台ill之尺寸相互配合。 這樣，可以使得當複數個凸纟m之同心、度較高時， 保證其上承載之光學元件之同心度較高。200909900 IX. Description of the Invention: [Technical Field] The present invention relates to the field of optical systems, and more particularly to a lens barrel, an IA method thereof, and a lens module using the same. [Prior Art] With the development of camera technology, lens modules have been widely used in various settings, and the combination of lens modules and various portable electronic devices has been favored by many consumers. The lens module L hangs the lens barrel and the optical components housed in the lens barrel. The optics include a lens, a gimbal sheet, and a spacer for the spacer paste paste by using α K- & u such as a spacer ring, etc., the lens barrel in the lens module is generally made of plastic, using plastic t (4) production of material production; "the design of the female group of the money to use ^ combination of lens type lens, therefore, the lens tube is designed to match the multi-stage design of the inner wall with multiple mirrors, as shown in Figure 5 and the traditional plastic mirror Schematic diagram of the cylinder 1〇0. The inner wall of the lens barrel 1〇1 is used for the lens in the lens module and other optical elements on the stage. However, there will be cooling due to plastic molding. The problem of shrinkage exists; the number of steps of the inner wall 101 of the lens barrel 100 is relocated, and the error often exceeds the tolerance range of the optical month~吟; the lens tube with poor coaxiality derives the lens optical axis deviation problem. The problem of poor resolution and low production yield is usually adjusted by adjusting the precision of the mold for the lens barrel. The stepped portion of the inner wall of the lens barrel from 200909900 has a high degree of concentricity, and the lens module is corrected. Positional deviation between the center lines of the lens barrel The effect of the difference is that the precision of the mold for the t-tube is high. Using this method will reduce the time and cost of the vehicle, which is not conducive to improving production efficiency. r: This: It is necessary to provide a coaxiality. High precision, not easy to occur = eccentricity and modification of the design of the lens barrel and its manufacturing method. [Summary of the Invention] In view of this, provide a kind of mirror with high coaxiality accuracy, not = the heart and modify the design more convenient The cylinder and the manufacturing method thereof are indispensable - the 镜 = the lens barrel is used in the lens module, the lens barrel includes the heart; the method is integrally formed - the plastic outer cylinder and a metal inner::: metal inner cylinder The inner inverted wall has at least one surrounding inner side wall = σ for carrying the optical element. The present invention provides a method for manufacturing the above-mentioned method: providing a metal round brother's method, which comprises the following steps: The tube is placed in the cavity of the molding machine, and the finished product is processed. The metal round of the semi-finished product of the lens barrel is processed by the same method as the processing method. At least one inner side wall is made of a precision mechanical tube. Is made into a mirror Mingyun provides an operation, a ten-pull module including a lens barrel and at least one lens module, the lens barrel including an optical element of a type: a metal inner cylinder, and a metal inner cylinder The inner side plastic outer cylinder and the upper boss having at least one inner side of the 200909900 wall are used for carrying the at least one optical component. Since the lens barrel adopts a metal inner cylinder, the traditional plastic lens barrel can be prevented from shrinking due to the cooling of the rubber material. The dimensional deviation problem is generated, and the metal inner cylinder can be processed by a precision machining method for the stepped boss on the inner wall. Therefore, the processing precision is high, and the stepped boss formed by the integral molding of the conventional plastic lens barrel is formed. In contrast, the concentricity is greatly improved, and since the design changes only need to change the machining parameters without changing the mold design, it is very convenient and cost-effective. Compared with the prior art, the lens barrel provided by the invention has the following advantages: the concentricity and degree precision of the lens barrel are high, the lens eccentricity is not easy to occur, and the design is very convenient to modify, and the maintenance cost is greatly reduced. [Embodiment] Hereinafter, the embodiment of the present invention will be further described in detail with reference to the accompanying drawings - "refer to FIG. 1 and FIG. 2, the lens barrel provided in the embodiment of the present invention is used in a head module, and the lens barrel includes a plastic knee outer casing 10 and a metal inner cylinder u, c The plastic outer cylinder 10 is a cylinder, and its outer shape is similar to that of a common lens mold. On the outer wall of the plastic outer cylinder 1 Shape (the figure is not shown to be used to fix the lens holder of the lens module; the Π海 plastic outer 埼 10 is made of plastic material. etc., and the U-shaped structure can be set for the tapered 'cylindrical or ladder needs In the present implementation, the metal and the U are cylindrical. The metal inner cylinder 11 has an inner side wall and an outer side wall 120. 200909900 ': the wall 110 has at least a boss m surrounding the inner side wall m The convex a piece: the optical element carrying the lens module, such as an optical element such as a mesh-filter. In the embodiment, the number of the convex A ill is four, and a plurality of lenses and opticals can be disposed. Components, etc.. Inside the metal inner cylinder π, the second mirror... is arranged in a stepped manner at the center. Processing method force: Γ! The plurality of bosses 111 can use the fine ==, using CNC machining machine coaxial machining to complete the lens barrel two-numbered boss 1U, the concentricity error can be controlled within 5_: After the measured data, the concentricity of the order % in the ordinary injection molding tube is wrong * ^ 1 < 丨 white many factors η, but because of the injection molding will be different products: 'for example, the material Temperature, pressure, and the output of each mode are relatively large. The error is relatively easy to control with the same mirror in the metal. 円 = metal inner tube U material is optional From: copper carbon steel, stainless steel, or copper, -1, recorded, titanium, bismuth, alloy of the kind of metal. Yutai gives the main gold two kinds of gold. In this case, the material of the metal inner cylinder π is copper. Combination:: inner cylinder η and the plastic outer cylinder 10 = molding method into the injection molding (1_2) metal cladding metal forming technology, the principle is to cover the metal parts buried plastic parts The effect of the human body, k, preferably 'the outer side wall 120 of the metal inner cylinder n can be set up, for example, Table 20. 0909900 Face biting, dark lines and various concave and convex structures' are used to make the metal inner cylinder u and the plastic inner casing 1〇 tightly combined to avoid machining the metal inner cylinder u: the metal inner cylinder 11 and the plastic outer cylinder 1 The present invention provides a lens barrel manufacturing method for manufacturing the same, which comprises the steps of: providing a metal cylinder 21; placing the metal lamp in a molding machine cavity, forming an insert molding method The lens barrel semi-finished product of the metal cylinder 21 is wrapped inside; the semi-finished product of the lens barrel is 2: the inner side wall 211 of the cylinder is formed with at least one convex surrounding the inner side wall:: a lens barrel is formed. As shown in FIG. 3, it is a schematic perspective view of the mirror and the semi-finished product 20 manufactured by the method. The barrel semi-finished product 20 is internally wrapped with a metal cylinder 21. The outer shape of the metal cylinder 21 may be tapered, cylindrical or stepped. In the embodiment, the outer shape of the metal cylinder 21 is cylindrical. At least one boss is formed on the inner side wall 211 of the metal cylinder 21, and P forms a metal inner 胄u of the lens barrel. The boss can be formed by a precision mechanical method. A plurality of bosses can be formed on the inner side of the metal cylinder 21 by the processing method. The plurality of bosses are arranged in a stepped manner on the inner side wall 211 of the metal cylinder 21 centering on the center of the lens barrel. The plurality of bosses can control the concentricity error within 5_. The metal cylinder 21 and the plastic outer cylinder 22 of the lens barrel blank 20 are integrally molded. It can be manufactured by a "type molding method. - Junglely, the outer side wall of the metal cylinder 21 can be provided with a surface bite. The mouth is dark, 'text or various concave and convex structures, which are used to make the metal cylinder and the plastic knee outer cylinder 22 of the lens barrel half 20 tightly combined, and avoid the metal cylinder when the metal cylinder μ into the 2000909900 line machining, the metal cylinder 21 is separated from the returning cylinder 22. No, the surface of the metal cylinder 21, the Japanese 丨 * 简 简 之外 之外 之外 之外 表面 表面 表面 表面 表面 表面 表面 表面 。 。 。 。 。 。 。 。 。 表面 表面 表面 表面 表面 表面 表面 表面 表面The module comprises: an optical component disposed in the lens barrel and at least one of the above-mentioned optical cylinders. The lens cylinder comprises: a plastic molding outer cylinder 1 〇 and a metal inner cylinder The inner phase of the same 11 is 1 1 nl y gamma, < π side 璧 110 has at least one boss 111 surrounding the inner side wall for carrying the at least one optical element. Two ends can be carried on the boss ^, the optical element is sized and convex The dimensions of the table ill are matched with each other. Thus, when the concentricity and degree of the plurality of tenons m are high, the concentricity of the optical elements carried thereon is ensured to be high.
由於該鏡筒採用金屬内筒，故可避免傳統塑踢鏡筒因 膠：冷卻收縮所產生之尺寸偏差問題，而金屬内筒可採用 精密加工方法來進行内壁上之階梯狀凸台之加工，因此， 加工精度較高，與傳統塑膠鏡筒通過一體成型所形成之階 梯狀凸台相比’其同心度大大提高。且由於更改設計只需 更改機械加工參數，而不需更改模具設計，因此非常方便 快捷且成本大為降低。 相較於先前技術，本發明提供之鏡筒具有如下優點： 鏡筒之同心度精度較高，不容易發生鏡片偏心，且修改設 計十分方便，維護成本大大降低。 綜上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施方 11 200909900 ^自本案之申請專利範圍。舉凡熟悉本f .技☆之人士援依本發明之精神所作之 應涵蓋於以下申請專利範圍内。 > > 或變化，皆 【圖式簡單說明】 圖1係本發明實施例提供之鏡筒之立體圖。 圖2係本發明實施例提供之鏡筒之剖視圖。 圖3係本發明實施例提供之鏡筒之半成品之 圖4係本發明實施例提供之鏡筒之金屬圓筒 =。 圖5係先前技術之鏡筒之立體圖。 -圖。 圖6係先前技術之鏡筒之剖視圖。 【主要元件符號說明】 10，22 金屬内筒 11 20 金屬圓筒 21 110 ， 211 凸台 ill 120 表面咬花 212 100 内壁 1〇1 102 塑膠外筒 鏡筒半成品 内側壁 壁 筒 台 外側 鏡 階 12Since the lens barrel adopts a metal inner cylinder, the problem of dimensional deviation caused by the plastic: cooling shrinkage can be avoided, and the metal inner cylinder can be processed by a precision machining method for the stepped boss on the inner wall. Therefore, the processing precision is high, and the concentricity is greatly improved compared with the stepped boss formed by the integral molding of the conventional plastic lens barrel. And because changing the design requires only changing the machining parameters without changing the mold design, it is very convenient and fast, and the cost is greatly reduced. Compared with the prior art, the lens barrel provided by the invention has the following advantages: The concentricity precision of the lens barrel is high, the lens eccentricity is not easy to occur, and the design is very convenient to modify, and the maintenance cost is greatly reduced. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above is only the preferred embodiment of the present invention 11 200909900 ^ The patent application scope of this application. Anyone who is familiar with the present invention should be covered by the spirit of the present invention within the scope of the following patent application. >><> or change, [Simplified illustration of the drawings] Fig. 1 is a perspective view of a lens barrel according to an embodiment of the present invention. 2 is a cross-sectional view of a lens barrel according to an embodiment of the present invention. 3 is a semi-finished product of a lens barrel according to an embodiment of the present invention. FIG. 4 is a metal cylinder of a lens barrel according to an embodiment of the present invention. Figure 5 is a perspective view of a prior art lens barrel. - Figure. Figure 6 is a cross-sectional view of a prior art lens barrel. [Main component symbol description] 10,22 Metal inner cylinder 11 20 Metal cylinder 21 110 , 211 boss ill 120 surface bite 212 100 inner wall 1〇1 102 plastic outer tube semi-finished tube inner wall wall tube table outer mirror step 12