200901838 , 九、發明說明： 〃 【發明所屬之技術領域】 本發明關於一種相機模組，尤其係關於一種具有防塵 功能之相機模組。 【先前技術】 目前以模組化進行量產，且使用具有拍照功能之電子 產品，如數位相機、移動電話以及個人數位助理之相機模 『 組，其在製程及運輸過程中，常會有灰塵沾染之問題，造 成產品拍照品質受到影響，因此，減少外界對相機模組之 污染，如灰塵等，將有利於提高相機模組之拍照品質。 通常相機模組都包括用於成像的鏡頭模組及設置於 該鏡頭模組像侧的影像感測器。該鏡頭模組包括一用於收 容鏡片之鏡筒以及一與所述鏡筒通過螺紋連接之鏡座。因 為鏡筒與鏡座間通過螺紋連接，在製程及運輸過程中，會 有灰塵落入並藏匿在該螺紋間隙中。而當旋轉鏡筒以調整 、鏡片與影像感測器之距離時，會使藏匿於螺紋間之灰塵落 在影像感測器之感測區上5由於影像感測器感測區南度敏 感，會因為灰塵之落入，而導致拍攝影像品質之降低。 【發明内容】 有鑒於此，有必要提供一種能夠提高拍攝影像品質之 具有防塵功能之相機模組。 一種相機模組，其包括一用於成像之鏡頭模組、一相 連於所述鏡頭模組像側之影像感測模組以及一貼覆於所述 鏡頭模組之外侧表面上之防護膜。 6 200901838 該相機模組由於所述防護膜之作用，將鏡筒與鏡座之 ^ 内、外螺紋與外界相隔離，從而使得在製程及運送過程中 可杜絕灰塵或渣滓等落入鏡筒與鏡座之内、外螺紋之缝隙 中，使得組裝入電子產品中之相機模組不會有灰塵等藏 匿，也不會洛入影像感測模組之感測區上，而避免鏡頭模 組及影像感測模組受外界污染，因而該相機模組之拍攝品 質得以提高。 【實施方式】 為了對本發明作更進一步說明，舉一較佳實施例並配 合圖式詳細描述如下。 請參閱圖1及圖2，為本發明實施例所提供之相機模 組10。其包括一用於成像之鏡頭模組11、一相連於鏡頭模 組11像側之影像感測模組12以及一貼覆於該鏡頭模組11 外侧表面上之防護膜13。 所述鏡頭模組11包括一收容有複數光學元件（圖未示） 鏡筒111以及一與該鏡筒111相連之鏡座112。在本實施 ' 例中，該鏡筒111與所述鏡座112相連之一端之外侧設置 有外螺紋113，相對於該螺紋113之另一端設置有用於與 驅動機構，如音圈馬達（圖未示）齒輪連接之輪齒114。所述 鏡座112之内側設置有與鏡筒111之外螺紋113相配合之 内螺紋115，用於與鏡筒111螺紋連接以便於鏡筒111沿 鏡座112轴線移動。 所述影像感測模組12包括一影像感測器121及一用 於放置該影像感測器121且與該影像感測器121電連接之 7 200901838 基板122。該影像感測器121用於感測來自鏡頭模組11之 光並將其轉換為數位訊號以便於相機處理器（圖未示）處 理。所述基板122用於與相機中其他元件如電路板（圖未示） 相連，用於將該影像感測器121所獲得之數據傳輸出去。 該影像感測模組12設置於鏡座112之遠離鏡筒111之一 侧。 所述防護膜13包括一本體131以及從該本體131邊 緣延伸設置之四個葉片132。所述本體131可以與葉片132 一體成型，也可以與葉片132分離設置，在本實施例中， 所述本體131與葉片132 —體成型。該本體131用於覆蓋 鏡頭模組之遠離影像感測模組12 —端之端面。所述四個葉 片132用於覆蓋鏡頭模組之側面。所述防護膜13材質可以 為遮蔽膠帶（3M4734)，其貼覆面塗佈有粘膠，用於使該防 護膜13粘附於鏡頭模組11之外侧表面上。優選地，該防 護膜13為一平板型膠材。在將該相機模組10組裝入電子 產品時，該防護膜13要從鏡頭模組11上剝下。當然，可 以想到的是，當防護膜13為透明材質時，則在該相機模組 10組裝入電子產品時，不會影像相機模組成像，則無需將 該防護膜13從該相機模組10上剝下。 可以理解的是，所述鏡頭模組11相對於影像感測模組 12的一側還可以設置用於驅動鏡筒111旋轉的驅動機構， 如音圈馬達，用於對鏡頭模組調整對焦，此時，直接將防 護膜13貼覆於該驅動機構之遠離影像感測模組一端之端 面及四周外侧即可。 8 200901838 , 該相機模組由於所述防護膜之作用，將鏡筒與鏡座之 . 内、外螺紋與外界相隔離，從而使得在製程及運送過程中 可杜絕灰塵或渣滓等落入鏡筒與鏡座之内、外螺紋之缝隙 中，使得組裝入電子產品中之相機模組不會有灰塵或渣滓 等的藏匿，也不會落入影像感測模組之感測區上，而避免 鏡頭模組及影像感測模組受外界污染，因而該相機模組之 拍攝品質得以提南。 综上所述，本發明符合發明專利要件，爰依法提出專 〆 利申請。惟，以上所述者僅為本發明之較佳實施例，本發 明之範圍並不以上述實施例為限，舉凡熟習本案技藝之人 士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於 以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明提供之相機模組之立體分解結構示意 圖； 圖2係圖1中之相機模組之組裝後之立體結構示意 ' 圖。 【主要元件符號說明】 相機模組 10 鏡頭模組 11 鏡筒 111 鏡座 112 内、外螺紋 113 、 115 輪齒 114 影像感測模組 12 影像感測器 121 基板 122 防護膜 13 本體 131 葉片 132200901838, IX. Invention Description: 〃 Technical Field of the Invention The present invention relates to a camera module, and more particularly to a camera module having a dustproof function. [Prior Art] At present, mass production is carried out in a modular manner, and electronic products having a photographing function, such as a digital camera, a mobile phone, and a camera module of a personal digital assistant are often used, which often have dust contamination during the process and transportation. The problem is that the quality of the product is affected. Therefore, reducing the pollution of the camera module, such as dust, will help improve the camera quality of the camera module. Generally, the camera module includes a lens module for imaging and an image sensor disposed on the image side of the lens module. The lens module includes a lens barrel for receiving the lens and a lens holder that is screwed to the lens barrel. Because the lens barrel and the mirror base are connected by screws, dust will fall into and hide in the thread gap during the process and transportation. When the lens barrel is rotated to adjust the distance between the lens and the image sensor, the dust hidden between the threads falls on the sensing area of the image sensor. 5 Because the sensing area of the image sensor is sensitive to the south, The quality of the captured image will be degraded due to the falling of dust. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a camera module having a dustproof function capable of improving image quality. A camera module includes a lens module for imaging, an image sensing module coupled to the image side of the lens module, and a protective film attached to an outer surface of the lens module. 6 200901838 The camera module isolates the inner and outer threads of the lens barrel and the lens holder from the outside due to the action of the protective film, so that dust or dross can be prevented from falling into the lens barrel during the process and transportation. In the gap between the inner and outer threads of the lens holder, the camera module incorporated in the electronic product is not hidden by dust or the like, and is not embedded in the sensing area of the image sensing module, and the lens module and the lens module are avoided. The image sensing module is polluted by the outside world, so the shooting quality of the camera module is improved. [Embodiment] In order to further clarify the present invention, a preferred embodiment will be described in detail below with reference to the drawings. Please refer to FIG. 1 and FIG. 2, which illustrate a camera module 10 according to an embodiment of the present invention. The lens module 11 for imaging, the image sensing module 12 connected to the image side of the lens module 11 and the protective film 13 attached to the outer surface of the lens module 11 are included. The lens module 11 includes a lens barrel 111 that houses a plurality of optical elements (not shown) and a lens holder 112 that is coupled to the lens barrel 111. In the present embodiment, the outer side of one end of the lens barrel 111 connected to the lens holder 112 is provided with an external thread 113, and the other end of the thread 113 is provided with a driving mechanism, such as a voice coil motor (not shown). Shown gear teeth 114. The inner side of the lens holder 112 is provided with an internal thread 115 that cooperates with the external thread 113 of the lens barrel 111 for screwing with the lens barrel 111 to facilitate movement of the lens barrel 111 along the axis of the lens holder 112. The image sensing module 12 includes an image sensor 121 and a substrate 2009 122 for placing the image sensor 121 and electrically connected to the image sensor 121. The image sensor 121 is configured to sense the light from the lens module 11 and convert it into a digital signal for processing by a camera processor (not shown). The substrate 122 is used to connect with other components in the camera, such as a circuit board (not shown), for transmitting the data obtained by the image sensor 121. The image sensing module 12 is disposed on one side of the lens holder 112 away from the lens barrel 111. The protective film 13 includes a body 131 and four blades 132 extending from the edge of the body 131. The body 131 may be integrally formed with the blade 132 or may be disposed separately from the blade 132. In the embodiment, the body 131 is integrally formed with the blade 132. The body 131 is configured to cover an end surface of the lens module away from the end of the image sensing module 12 . The four blades 132 are used to cover the sides of the lens module. The protective film 13 may be made of a masking tape (3M4734), and the adhesive surface is coated with an adhesive for adhering the protective film 13 to the outer surface of the lens module 11. Preferably, the protective film 13 is a flat type of adhesive. When the camera module 10 is assembled into an electronic product, the protective film 13 is peeled off from the lens module 11. Of course, it is conceivable that when the protective film 13 is made of a transparent material, when the camera module 10 is assembled into an electronic product, the image of the image camera module is not imaged, and the protective film 13 is not required to be removed from the camera module 10 . Peel off. It can be understood that a side of the lens module 11 relative to the image sensing module 12 can also be provided with a driving mechanism for driving the rotation of the lens barrel 111, such as a voice coil motor, for adjusting the focus of the lens module. At this time, the protective film 13 is directly attached to the end surface of the driving mechanism away from the end of the image sensing module and the outer side of the periphery. 8 200901838 , the camera module isolates the inner and outer threads of the lens barrel and the lens holder from the outside due to the action of the protective film, so that dust or dross can be prevented from falling into the lens barrel during the process and transportation process. In the gap between the inner and outer threads of the lens holder, the camera module incorporated in the electronic product is not hidden by dust or dregs, and does not fall into the sensing area of the image sensing module, thereby avoiding The lens module and the image sensing module are polluted by the outside world, so the shooting quality of the camera module can be improved. In summary, the present invention complies with the requirements of the invention patent, and proposes a special patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of a camera module provided by the present invention; FIG. 2 is a schematic perspective view of the assembled camera module of FIG. [Main component symbol description] Camera module 10 Lens module 11 Lens barrel 111 Mirror holder 112 Internal and external thread 113, 115 Tooth 114 Image sensing module 12 Image sensor 121 Substrate 122 Protective film 13 Body 131 Blade 132