200837415 九、發明說明： 【發明所屬之技術領域】 本發明係為一種八角形微型鏡頭對焦結構，特別是關 於一種以電磁驅動之方式帶動鏡頭移動而達成對焦功能之 微型對焦結構。 【先前技術】 由於科技的進步，使得數位相機的體積縮的相當地 ® 小，而目前的行動電話亦大都建置有數位相機的功能，這 些都歸功於攝像鏡頭的模組化及微型化，而在微型鏡頭内 有許多種類的自動對焦驅動結構，目前最普遍被使用的是 音圈馬達（VCM)，因其具有體積小、用電量少、致動位移精 確及價格低廉等優點，適合作為微型鏡頭自動對焦的短距 驅動。 如圖一所示，在一般的對焦裝置1〇中，主要是由包括 φ 一鏡頭組11、以及一光感測元件12所組成，該鏡頭組η可 將被攝物件之反射影像光成像於光感測元件12上；如果鏡 , 頭組11與光感測元件12間的距離係為固定（亦即定焦鏡 頭），則其僅能清晰呈現2—3公尺以外距離（Hyper f〇cal Distance)的物件·，若欲擁有近拍功能，則必須利用一額 外的鏡頭對焦裝置來帶動鏡頭組位移，以改變鏡頭組與光 感測兀件之間的距離，達到對焦（F〇cus)之目的。 而當鏡頭組具有光學變焦（z〇〇m)功能時，鏡頭組内部之 多組鏡群之間亦必須配合變焦倍率的改變，來產生相對應 200837415 之位移，此時，所述之鏡群位移亦需將對焦裝置設計於鏡 頭模組之中。 「習知對焦機構設計，其移動鏡頭組的機構設計採用 「手動方式」為主’使用±較不方便；本發明將針對上述 ^缺點進行改善，將鏡頭之對焦方式由手動改為電磁驅 動，同時簡化機構之設計，降低生產成本讀良組裝製程， 期能將此微魏焦結構祕手機、筆記型 品之照相槿組卜_。 Λ寺產 【發明内容】 動之方式帶動鏡 鏡頌大等優點之 本發明之目的是在提供一種以電磁驅 頭移動而達成功能，且具有體積小、 微型對焦結構。 ^達到上述之目的，本發明之μ 構包括-㈣座，供承载—鏡頭；至少 對焦結BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an octagonal microlens focusing structure, and more particularly to a microfocus structure for driving a lens by electromagnetic driving to achieve a focusing function. [Prior Art] Due to advances in technology, the size of digital cameras has been reduced to a small size, and most of the current mobile phones have digital camera functions, which are attributed to the modularization and miniaturization of camera lenses. There are many types of autofocus drive structures in miniature lenses. The most commonly used is the voice coil motor (VCM), which has the advantages of small size, low power consumption, accurate actuation displacement and low price. As a short-range drive for micro lens autofocus. As shown in FIG. 1 , in a general focusing device 1 , mainly composed of a φ lens group 11 and a light sensing component 12 , the lens group η can image the reflected image of the object. On the light sensing element 12; if the distance between the head group 11 and the light sensing element 12 is fixed (ie, a fixed focus lens), it can only clearly show a distance other than 2-3 meters (Hyper f〇 The object of the cal distance), if you want to have the macro function, you must use an additional lens focusing device to drive the lens group displacement to change the distance between the lens group and the light sensing element to achieve focus (F〇cus ) The purpose. When the lens group has the optical zoom (z〇〇m) function, the plurality of groups of mirrors inside the lens group must also match the zoom magnification to generate a displacement corresponding to 200837415. At this time, the mirror group The displacement also requires the focusing device to be designed in the lens module. "The design of the conventional focusing mechanism, the mechanism design of the moving lens group adopts "manual mode" as the main 'use ± is less convenient; the present invention will improve the above disadvantages, and change the focusing mode of the lens from manual to electromagnetic driving. At the same time, the design of the mechanism is simplified, the production cost is reduced, and the good assembly process is completed. The micro-wei Jiao structure mobile phone and the notebook of the notebook type can be used. Λ 产 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 For the above purposes, the μ structure of the present invention includes a - (four) seat for carrying a lens; at least a focus junction
於承载座之外圍；至少-彈性元件，連件，包覆 件；以及至少-磁性元件，·當通電後，^ ^及線圈元 傳導至線圈元件上，該線圈元件與雜^错由彈性元件 力而使承載座產生位移’達到自動對焦之功^間產生作用 【實施方式】 *為了使貴審查委員能更進一步瞭 疋目的所採取之技術、手段及功效，請泉★明為達成預 明之詳細說明與附圖，相信本發明之二以下有關本發 、、特徵與特點， 200837415 當可由此得一深入且具體之瞭解，然而所附圖式僅提供參 考與說明用，並非用來對本發明加以限制者。 、如圖二所示，一種八角形微型鏡頭對焦結構包括一承 載座20、一上蓋60、至少一彈性元件5〇、四磁性元件4〇、 一線圈元件30、一框架7〇及一感光元件8〇。 • 該承載座20供承載一鏡頭21，該鏡頭21具有一軸向 • 22，其為鏡頭21用以聚光之軸心方向；該承載座20為一中 φ 空環狀結構且於轴向22具有一貫穿孔23，於貫穿孔23與鏡 頭21之間具有可對應鎖合之螺牙結構24,以便將鏡頭21鎖 固於貫穿孔23中。 該框架70為一中空結構且於軸向22投影之内緣輪廓 1應於承載座2〇之外緣輪廓，當承载座2〇容納於框架7〇 時，兩者之内、外輪廓的配合構成線性導引機構，使得承 載座20僅能在框架7〇内進行線性位移而無法旋轉。 如圖三所示，該線圈元件30包覆於承載座20之外圍， • 且其呈八邊形，當鏡頭21旋轉安裝於貫穿孔23時，因會產 生扭力，故八邊形之線圈元件3〇可限制鏡頭21旋轉安裝之 ' 角度，避免過大之扭力破壞承載座20之内部結構。 ， 如圖二、四所示，該磁性元件40係屬永久磁鐵，位於 線圈元件30之外圍的其中四個邊緣且間距相同，使鏡頭21 可以達到最大直徑，而達到外型體積雖小但鏡頭21增大之 效果；此四個磁性元件4〇具有共同之一外罩41，該外罩41 呈八邊开>，係屬金屬材質，供有效封閉磁場，使内部磁場 更強、效率更好，且防止磁力外漏。 200837415 如圖二、五所示，該彈性元件5〇供支撐承載座2〇並使 其固定於框架70中心懸空，其具有一上平板彈簧51及二下 平板彈黃52，該上平板彈簧51連結承载座2〇、框架7〇及上 蓋60，該下平板彈簧52連結承載座2〇及框架7〇 ;該上平板 彈尹、51具有四個固定處53、一圓孔54及四個蛇狀處55，該 圓孔54位於中心且對應承載座2〇，用以固定承載座2〇，該 固定處53位於人邊形之四個邊緣，用以固定框㈣上的四At the periphery of the carrier; at least - an elastic member, a connecting member, a covering member; and at least - a magnetic member, when energized, the coil element is conducted to the coil member, and the coil member and the component are misaligned by the elastic member Force to make the displacement of the carrier' to achieve the function of autofocusing [Embodiment] * In order to enable the reviewing committee to further improve the technology, means and effects, please The detailed description and the accompanying drawings are to be regarded as the description of the present invention, and the features and features of the present invention. Limit the person. As shown in FIG. 2 , an octagonal micro lens focusing structure includes a carrier 20 , an upper cover 60 , at least one elastic component 5 , four magnetic components 4 , a coil component 30 , a frame 7 , and a photosensitive component . 8〇. The carrier 20 is configured to carry a lens 21 having an axial direction 22 which is the axial direction of the lens 21 for collecting light; the carrier 20 is a medium φ hollow ring structure and is axially The lens 22 has a continuous perforation 23 and a correspondingly threaded thread structure 24 between the through hole 23 and the lens 21 for locking the lens 21 in the through hole 23. The frame 70 is a hollow structure and the inner edge contour 1 projected in the axial direction 22 is disposed on the outer edge contour of the carrier 2, and when the carrier 2 is accommodated in the frame 7〇, the inner and outer contours of the two are matched. A linear guiding mechanism is constructed such that the carrier 20 can only be linearly displaced within the frame 7A and cannot be rotated. As shown in FIG. 3, the coil component 30 is wrapped around the periphery of the carrier 20, and has an octagonal shape. When the lens 21 is rotatably mounted on the through hole 23, a torsion force is generated, so that the octagonal coil component is formed. 3〇 can limit the angle of the lens 21 to rotate, avoiding excessive torque to damage the internal structure of the carrier 20. As shown in FIG. 2 and FIG. 4, the magnetic element 40 is a permanent magnet, and the four edges of the outer periphery of the coil component 30 have the same pitch, so that the lens 21 can reach the maximum diameter, and the lens is small in size but the lens is small. The effect of increasing 21; the four magnetic elements 4 〇 have a common outer cover 41, and the outer cover 41 is open on the side, which is a metal material for effectively closing the magnetic field, so that the internal magnetic field is stronger and the efficiency is better. And prevent magnetic leakage. As shown in FIG. 2 and FIG. 5, the elastic member 5 is for supporting the carrier 2 and is fixed to the center of the frame 70. It has an upper flat spring 51 and two lower flat springs 52. The upper flat spring 51 Connecting the carrier 2〇, the frame 7〇 and the upper cover 60, the lower plate spring 52 is coupled to the carrier 2〇 and the frame 7〇; the upper plate projection Yin 51 has four fixing portions 53, a circular hole 54 and four serpentine shapes. At a position 55, the circular hole 54 is located at the center and corresponds to the carrier 2〇 for fixing the carrier 2〇. The fixing portion 53 is located at the four edges of the human edge for fixing the four on the frame (4).
及上蓋6〇,該蛇狀處55連接固定處53而使框架川及上 盍60得以連結上平板彈簧51，透過四個蛇狀 擊、振動、落下·、Υ、Ζ方向之受力並使受力平均，使上 平板彈黃51不易產生形變。 力如圖六所示，該承載座20另具有一凸部25，支撐於框 架70底面’使下平板彈簧52彎曲而產生一向下之力，當承 ，座20不論是朝上放置、朝下放置或水平放置，其都會被 °下之力固疋住’使其在任何方向之初始位置都不會晃And the upper cover 6〇, the serpentine 55 is connected to the fixing portion 53 to connect the frame tube and the upper jaw 60 to the upper plate spring 51, and transmits the force in the direction of the four serpents, vibrations, drops, cymbals, and cymbals. The average force is such that the upper plate spring 51 is not easily deformed. As shown in FIG. 6, the carrier 20 further has a convex portion 25 supported on the bottom surface of the frame 70 to bend the lower flat spring 52 to generate a downward force. When the bearing 20 is placed upward or downward, the seat 20 is placed upwards and downwards. Placed or placed horizontally, it will be solidified by the force of 'under its original position in any direction will not be shaken
使用時，該線圈元·及磁性讀_動承载座別於 蕾内進行軸向22之前、後方向的線性位移運動 產=猎由下平板彈簧52料至線圈元賴，使_元件抑 =場而具有推力，與磁性元件4{)—同驅動承載座如產 焦動龜2G錢頭咖定在職位置上而完成對 圈疋件即所提供之推力方向與磁性元件仙之 力^向相同’也就是實質上提供了幾乎㈣於兩倍之推 大幅提尚電磁驅動承載座20之效能。 200837415 * ， 綜上所述，八角形之線圈元件30之設計，玎避免過大 之扭力破壞承载座2〇之内部結構；該磁性元件40之設置， 使達到外型體積小但鏡頭21大之效果；該外罩41之設計， 使内部磁場更強、效率更好且防止磁力外漏；該蛇狀處55 之設計，使上平板彈簧51不易產生形變；該凸部25之設計， 使承載座20在任何方向之初始位置都不會晃動、位移，·本 發明以電磁驅動之方式帶動承載座2〇與鏡頭21移動而達成 _對焦功忐，且具有驅動效能佳、體積小、鏡頭大及製造成 本低等優點。 職疋，本發明確能藉上述所揭露之技術，提供一種迥 然巧於f知者的設計，堪能提高整體之使用價值，又其 申請丽未見於刊物或公開使用，誠已符合發明專利之要 件，爰依法提出發明專利申請。 惟，上述所揭露之圖式、說明，僅為本發明之實施例 而已，凡精于此項技藝者當可依據上述之說明作其他種種 • 之改良，而這些改變仍屬於本發明之發明精神及以下所界 定之專利範圍中。 200837415 【圖式簡單說明】 圖一為習知鏡頭對焦原理之示意圖； 圖二為本發明八角形微型鏡頭對焦結構之立體分解 圖； 圖三為本發明八角形微型鏡頭對焦結構之前視示意 圖， 圖四為本發明八角形微型鏡頭對焦結構之磁性元件 之立體圖； 圖五為本發明八角形微型鏡頭對焦結構之彈性元件 之前視圖； 圖六為本發明八角形微型鏡頭對焦結構之剖面圖。 【主要元件符號說明】 10 攝影裝置 11 鏡頭組 12 光感測元件 20 承載座 21 鏡頭 22 軸向 23 貫穿孔 24 螺牙結構 25 凸部 30 線圈元件 40 磁性元件 200837415 41 外罩 50 彈性元件 51 上平板彈簧 52 下平板彈簧 53 固定處 54 圓孔 55 蛇狀處 60 上蓋 70 框架 80 感光元件 -11-When in use, the coil element and the magnetic read_moving carrier are arranged in the bud to perform the linear displacement motion in the front and rear directions of the axial direction 22; the hunting is performed by the lower flat spring 52 to the coil element, so that the _ component suppresses the field And with the thrust, and the magnetic component 4{) - with the drive carrier, such as the coke turtle 2G, the head of the coke is set to work, and the thrust direction provided by the ring is the same as the force of the magnetic component. That is, substantially the performance of the electromagnetic drive carrier 20 is substantially increased by a factor of two. 200837415 * , In summary, the design of the octagonal coil element 30 avoids excessive torque to damage the internal structure of the carrier 2; the magnetic element 40 is arranged to achieve a small external volume but a large lens 21 The cover 41 is designed to make the internal magnetic field stronger, more efficient, and prevent magnetic leakage; the serpentine 55 is designed to make the upper flat spring 51 less susceptible to deformation; the convex portion 25 is designed to enable the carrier 20 The initial position in any direction does not sway and displace. The present invention drives the carrier 2 〇 and the lens 21 to move by the electromagnetic driving method to achieve _ focusing power, and has good driving efficiency, small volume, large lens and manufacturing. Low cost and other advantages. At the job, the present invention can indeed provide a design that is succinct and clever to the knowledge of the above, which can improve the overall use value, and the application of the application is not seen in the publication or public use, and has already met the requirements of the invention patent. , 提出 filed an invention patent application in accordance with the law. However, the drawings and descriptions disclosed above are only examples of the present invention, and those skilled in the art can make other improvements according to the above description, and these changes still belong to the inventive spirit of the present invention. And in the scope of patents defined below. Figure 1 is a schematic view of a conventional lens focusing principle; Figure 2 is an exploded perspective view of the octagonal micro lens focusing structure of the present invention; Figure 3 is a front view of the octagonal micro lens focusing structure of the present invention, 4 is a perspective view of a magnetic component of the octagonal microlens focusing structure of the present invention; FIG. 5 is a front view of the elastic component of the octagonal microlens focusing structure of the present invention; and FIG. 6 is a cross-sectional view of the octagonal microlens focusing structure of the present invention. [Main component symbol description] 10 Photographic device 11 Lens group 12 Light sensing element 20 Carrier 21 Lens 22 Axial 23 Through hole 24 Screw structure 25 Projection 30 Coil element 40 Magnetic element 200837415 41 Cover 50 Elastic element 51 Upper plate Spring 52 Lower plate spring 53 Fixing point 54 Round hole 55 Snake 60 Upper cover 70 Frame 80 Photosensitive element-11-