1299095 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種取像鏡頭模組，特別關於一種具有 自動變焦功能之取像鏡頭模組。 ^ 【先前技術】 隨著科技的進步，照相功能不再僅限於數位照相機、 錄影機等，更廣泛應用於可攜式電子產品，例如行動通訊 裝置、個人數位助理與筆記型電腦，在現今，此具有照像 功能之可攜式電子產品已成為市場之主流。 如圖1所示，以下係以習知之行動通訊裝置的取像鏡 頭模組為例說明，取像鏡頭模組1係包含一鏡頭單元1〇、 一感測元件15以及一基座16。其中，鏡頭單元1〇係包含 一鏡頭筒11及一鏡片組12，鏡頭筒11係包含一容置空間 111以及一入光孔112，鏡片組12係設置於容置空間in 内，且鄰近入光孔112 ;基座16係連結於鏡頭筒11 ;感測 元件15係設置於一基板17上，基板17係可為一印刷電 路板或是一軟板，且基座16係黏著於基板17上。 承上所述，感測元件15可以是一感光耦合元件（CCD， charge coupled device)或是一互補性氧化金屬半導體感測 器（CMOS，complementary metal oxide semiconductor sensor)，用以感測經由入光孔112進入且經過鏡片組12 之光線。 承上所述，隨著多媒體技術的發展，行動通訊裝置之 1299095 取像鏡頭模組1除了自動對焦（Auto-Focusing)之功能外， 消費者更進而期望取像鏡頭模組1能具有變焦（Zoom)之 功能，即在同一位置上可拍攝遠近距離不同之物體的影 像。因此，行動通訊裝置之製造商無不積極研發將變焦功 能加諸於取像鏡頭模組1，以符合消費者之需求。 習知多媒體裝置例如數位變焦照相機係藉由調整鏡 頭内複數鏡片之間距，從而改變焦距，使拍攝之景物放大 或縮小。然而，由於數位變焦照相機之變焦鏡頭的結構偏 大、以及結構複雜，難以將相等結構實現於可攜式電子產 品，例如行動通訊裝置中。 有鑑於此，如何提供一種具有自動變焦功能之取像鏡 頭模組，實為現今可攜式電子產品製造商的重要課題之 【發明内容】 ♦有鑑於上述課題’本發明之目的為提供一種具有自動 變焦功能之取像鏡頭模組。 緣是，為達上述目的，依據本發明之取像鏡頭模組， 包含一第一鏡頭單元、一第二鏡頭單元及一致動單元。其 中，第一鏡頭單元係具有一第一鏡片組，第二鏡頭單元係 具有一第二鏡片組，致動單元係具有_滑動元件，第二鏡 頭單元係固定於滑動元件，致動單元係設置於第一鏡頭單 元之一端，致動單元係驅動滑動元件，俾使第二鏡頭單元 相對第一鏡頭單元移動。 1299095 承上所述，因依據本發明之取像鏡頭模組係利用致動 單元驅動滑動元件，而使固設於滑動元件之第二鏡頭單元 相對第一鏡頭單元作直線往覆移動，藉此改變取景之焦 距，而實現變焦之功能，其中致動單元可為一音圈馬達， 由於其之構造簡單、體積小，是以可應用於可攜式電子產 品而達自動變焦之目的。 【實施方式】 以下將參照相關圖式，說明依據本發明較佳實施例之 取像鏡頭模組，其中相同的元件將以相同的參照符號加以 說明。 請參照圖2所示，依據本發明較佳實施例之取像鏡頭 模組2係包含一第一鏡頭單元20、一第二鏡頭單元30及 一致動單元40。其中，本實施例之取像鏡頭模組2係應用 •於一可攜式行動裝置。 第一鏡頭單元20係具有一第一鏡片組22，第一鏡片 組22係容置於一鏡頭筒21内。 第二鏡頭單元30:係具有一第二鏡片組32，於此，第 二鏡片組32亦係容置於一鏡頭筒31内，且第二鏡頭單元 30之鏡頭筒31更包含一入光孔311，提供一成像光線進 入0 致動單元40係設置於第一鏡頭單元20之一端，如圖 2所示，致動單元40係連結於第一鏡頭單元20之鏡頭筒 21。在本實施例中，致動單元40係為一音圈馬達，其係 7 1299095 具有一滑動元件41以及一驅動元件42。如圖3所示，驅 動元件42係包含一線圈421以及一磁性元件422。在本實 施例中，線圈421係組繞於滑動元件41之外周圍，磁性 元件422則相對線圈421設置。當線圈421通以電流產生 磁場後，與磁性元件422作用而使滑動元件41作直線往 返之運動。其中，磁性元件422係可為一永久磁鐵。 如圖3所示，致動單元40更包含一基座43，滑動元 件41與驅動元件42係皆容置於基座43之容置空間431 中，而組成本實施例之致動單元40。承上所述，致動單元 40係以基座43連結於第一鏡頭單元20之鏡頭筒21。 . 第二鏡頭單元30係以螺合之方式固定於滑動元件41 中，於此，致動單元40係驅動滑動元件41，即藉由改變 線圈421之電流方向，在與磁性元件422作用下，而驅使 固設於滑動元件41之第二鏡頭單元30相對第一鏡頭單元 20移動，是以藉由移動第二鏡頭單元30造成與固定的第 一鏡頭單元20之間有相對位置的改變，從而改變取像鏡 頭模組2之焦距使被攝之景物放大或縮小，而達到變焦之 目的。 承上所述，如圖2所示，本實施例之取像鏡頭模組2 更包含一基座51，其係設置於第一鏡頭單元20之另一端， 基座51係可覆蓋於一電路板61上。 另外，本實施例之取像鏡頭模組2更包含一感測元件 71，成像光線係由入光孔311進入依序經過第二鏡片組 32、第一鏡片組22而至感測元件71接收成像光線以成 8 1299095 像，在本實施例中，感測元件71係為一感光耦合元件（CCD， charge coupled device)或是一互補性氧化金屬半導體感測 器（CMOS， complementary metal oxide semiconductor sensor) ° 承上所述，本實施例之取像鏡頭模組2更可包含一濾 光片81或一濾光膜82，係分別可為一紅外線濾光片或一 紅外線濾光膜設置於第一鏡片組22與感測元件71之間， 用以截止會對感測元件71成像干擾之光線，以提高成像 之清晰度。其中，濾光片81或濾光膜82之形狀係可為任 意多邊形。1299095 IX. Description of the Invention: [Technical Field] The present invention relates to an image taking lens module, and more particularly to an image taking lens module having an automatic zoom function. ^ [Prior Art] With the advancement of technology, camera functions are no longer limited to digital cameras, video recorders, etc., and are more widely used in portable electronic products, such as mobile communication devices, personal digital assistants and notebook computers. This portable electronic product with camera function has become the mainstream of the market. As shown in FIG. 1 , the following takes the image pickup lens module of the conventional mobile communication device as an example. The image capturing lens module 1 includes a lens unit 1 , a sensing element 15 and a base 16 . The lens unit 1 includes a lens barrel 11 and a lens group 12, and the lens barrel 11 includes an accommodating space 111 and a light-receiving hole 112. The lens group 12 is disposed in the accommodating space in and adjacent to the lens unit 12 The light hole 112; the base 16 is coupled to the lens barrel 11; the sensing element 15 is disposed on a substrate 17, which may be a printed circuit board or a flexible board, and the base 16 is adhered to the substrate 17. on. As described above, the sensing component 15 can be a CCD (charge coupled device) or a complementary metal oxide semiconductor sensor (CMOS) for sensing light passing through the light. The holes 112 enter and pass the light of the lens set 12. As mentioned above, with the development of multimedia technology, in addition to the function of auto-focaling, the 1129095 image-taking device of the mobile communication device further desires that the image-capturing lens module 1 can have zoom ( The function of Zoom) is to capture images of objects with different distances at the same position. Therefore, manufacturers of mobile communication devices have actively developed and added zoom functions to the image capturing lens module 1 to meet the needs of consumers. Conventional multimedia devices, such as digital zoom cameras, change the focal length by adjusting the distance between the plurality of lenses in the lens to enlarge or reduce the subject. However, due to the large structure of the zoom lens of the digital zoom camera and the complicated structure, it is difficult to implement an equivalent structure in a portable electronic product such as a mobile communication device. In view of the above, how to provide an image capturing lens module with an automatic zoom function is an important subject of today's portable electronic product manufacturers. ** In view of the above problems, the object of the present invention is to provide a The image capture module of the auto zoom function. Therefore, in order to achieve the above object, the image taking lens module according to the present invention comprises a first lens unit, a second lens unit and an actuating unit. Wherein, the first lens unit has a first lens group, the second lens unit has a second lens group, the actuation unit has a _sliding element, the second lens unit is fixed to the sliding element, and the actuation unit is configured At one end of the first lens unit, the actuation unit drives the sliding element to move the second lens unit relative to the first lens unit. 1299095 According to the above, the image taking lens module according to the present invention uses the actuating unit to drive the sliding element, so that the second lens unit fixed to the sliding element moves linearly relative to the first lens unit, thereby The focus of the framing is changed to realize the zoom function, wherein the actuating unit can be a voice coil motor. Because of its simple structure and small size, it can be applied to portable electronic products for automatic zooming. [Embodiment] An image taking lens module according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, in which the same elements will be described with the same reference numerals. Referring to FIG. 2, the image taking lens module 2 according to the preferred embodiment of the present invention includes a first lens unit 20, a second lens unit 30, and an alignment unit 40. The image capturing lens module 2 of the embodiment is applied to a portable mobile device. The first lens unit 20 has a first lens group 22, and the first lens group 22 is housed in a lens barrel 21. The second lens unit 30 has a second lens group 32. The second lens unit 32 is also disposed in a lens barrel 31, and the lens barrel 31 of the second lens unit 30 further includes an optical aperture. 311, providing an imaging light into the 0. The actuation unit 40 is disposed at one end of the first lens unit 20. As shown in FIG. 2, the actuation unit 40 is coupled to the lens barrel 21 of the first lens unit 20. In the present embodiment, the actuating unit 40 is a voice coil motor having a sliding member 41 and a driving member 42. As shown in Figure 3, the drive element 42 includes a coil 421 and a magnetic element 422. In the present embodiment, the coils 421 are wound around the outer periphery of the sliding member 41, and the magnetic member 422 is disposed opposite to the coil 421. When the coil 421 is energized by a current, it acts in conjunction with the magnetic member 422 to cause the sliding member 41 to move linearly. The magnetic element 422 can be a permanent magnet. As shown in FIG. 3, the actuating unit 40 further includes a base 43. The sliding member 41 and the driving member 42 are received in the receiving space 431 of the base 43 to constitute the actuating unit 40 of the embodiment. As described above, the actuating unit 40 is coupled to the lens barrel 21 of the first lens unit 20 by the base 43. The second lens unit 30 is fixed in the sliding element 41 by screwing. Here, the actuation unit 40 drives the sliding element 41, that is, by changing the current direction of the coil 421, under the action of the magnetic element 422, The second lens unit 30 fixed to the sliding member 41 is moved relative to the first lens unit 20 to change the relative position between the second lens unit 20 and the fixed first lens unit 20 by moving the second lens unit 30, thereby Changing the focal length of the image capturing lens module 2 causes the subject to be zoomed in or out to achieve the purpose of zooming. As shown in FIG. 2, the image capturing lens module 2 of the present embodiment further includes a base 51 disposed at the other end of the first lens unit 20, and the base 51 can cover a circuit. On the board 61. In addition, the image capturing lens module 2 of the embodiment further includes a sensing component 71. The imaging light is sequentially passed through the second light lens group 32 and the first lens group 22 through the light entering hole 311 to receive the sensing component 71. The imaging light is formed into an image of 8 1299095. In this embodiment, the sensing element 71 is a CCD (charge coupled device) or a complementary metal oxide semiconductor sensor (CMOS). The imaging lens module 2 of the present embodiment may further include a filter 81 or a filter film 82, which may be an infrared filter or an infrared filter. Between a lens group 22 and the sensing element 71, the light that interferes with the imaging of the sensing element 71 is cut off to improve the sharpness of the imaging. The shape of the filter 81 or the filter film 82 may be any polygonal shape.
在本實施例中，第一鏡片組22或第二鏡片組22係可 具有複數鏡片’以達到南解析度之目的，其中，該等鏡片 之材質係可為玻璃或塑膠。另外，本實施例之取像鏡頭模 組2更可包含複數抗反射膜(Anti_Reflecti〇n coating，ARIn this embodiment, the first lens group 22 or the second lens group 22 may have a plurality of lenses to achieve the purpose of south resolution, wherein the materials of the lenses may be glass or plastic. In addition, the image capturing lens module 2 of the embodiment may further comprise a plurality of anti-reflection films (Anti_Reflecti〇n coating, AR).
Coating)，該等抗反射膜係塗佈於第一鏡片組22或第二鏡 片組32之該等鏡片的相對表面上，藉由抗反射膜所具有 的抗反射作用，來增加該等鏡片之透射率，以提高成像之 清晰度。 綜上所述，因依據本發明之取像鏡頭模組係利用致動 單元驅動滑動元件，而使固設於滑動元件之第二鏡頭單元 相對第一鏡頭單元作直線往覆移動，藉此改變取景之焦 距，而實現變焦之功能，其中致動單元可為一音圈馬達， 由於其之構造簡單、體積小，是以可應用於可攜式電子產 品而達自動變焦之目的。 9 1299095 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡单說明】 圖1為一顯示習知之取像鏡頭模組的示意.圖； 圖2為一顯示依據本發明較佳實施例之取像鏡頭模組 的不意圖，以及 圖3為一顯示依據本發明較佳實施例之取像鏡頭模組 之致動單元的示意圖。 元件符號說明： 1 取像鏡頭模組 10 鏡頭單元 11 鏡頭筒 111 容置空間 112 入光孔 12 鏡片組 15 感測元件 16 基座 17 基板 2 取像鏡頭模組 20 第一鏡頭單元 21 鏡頭筒. 10 1299095 22 第一鏡片組 30 第二鏡頭單元 31 鏡頭筒 311 入光孔 32 第二鏡片組 40 致動單元 41 滑動元件 42 驅動元件 421 線圈 422 磁性元件 43 基座 431 容置空間 51 基座 61 電路板 71 感測元件 81 濾、光片 82 濾光膜 11The anti-reflective film is applied to the opposite surfaces of the lenses of the first lens group 22 or the second lens group 32, and the anti-reflection effect of the anti-reflection film is used to increase the lens. Transmittance to improve the sharpness of imaging. In summary, the image taking lens module according to the present invention uses the actuating unit to drive the sliding element, so that the second lens unit fixed to the sliding element moves in a straight line relative to the first lens unit, thereby changing The focal length of the framing is used to realize the zoom function, wherein the actuating unit can be a voice coil motor. Because of its simple structure and small size, it can be applied to portable electronic products for automatic zooming. 9 1299095 The foregoing is illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a conventional image capturing lens module; FIG. 2 is a schematic view showing an image capturing lens module according to a preferred embodiment of the present invention, and FIG. A schematic diagram showing an actuating unit of an image taking lens module in accordance with a preferred embodiment of the present invention. Description of component symbols: 1 Image lens module 10 Lens unit 11 Lens barrel 111 accommodating space 112 light-in hole 12 lens group 15 sensing element 16 pedestal 17 substrate 2 image-taking lens module 20 first lens unit 21 lens barrel 10 1299095 22 First lens group 30 Second lens unit 31 Lens barrel 311 Light-receiving hole 32 Second lens group 40 Actuating unit 41 Sliding element 42 Driving element 421 Coil 422 Magnetic element 43 Base 431 Housing space 51 Base 61 Circuit board 71 Sensing element 81 Filter, light sheet 82 Filter film 11