100年10月17日接正替換頁 1354.856 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係關於一種數位相機模組，尤其係關於一種可實 時監測鏡頭位置之數位相機模組》 【先前技術】 [0002] 數位相機中，對焦係保證所記錄的影像取得清晰效果之 關鍵步驟。對焦即係用調節鏡頭與影像感測器之間的距 離，使得鏡頭之像平面落在影像感測器之成像表面。目 前，常用之數位相機中多採用自動對焦，即根據被拍攝 目標的距離，由電路驅動馬達移動鏡片到相應之位置上 ，從而使被拍攝目標自動清晰成像。 [0003] 習知自動對焦可分爲主動式自動對焦與被動式自動對焦 兩類。主動式自動對焦：由相機發射紅外線或者超聲波 至被攝物體，感應器根據反射回來之紅外線或超聲波， 通過相機内之數字訊號處理器（DSP，Digital Signal Processor)計算，得出相機與被攝物體之距離，然後控 制對焦驅動器移動鏡頭，達到準確對焦。被動式自動對 焦：相機接受來自被攝物體本身之反光來判斷距離以進 行自動對焦。此種對焦方式之優點在於：不需發射光或 波，降低能耗，同時於光線良好之情況下能準確對焦； 缺點係：於光線亮度及對比度不足時對焦困難。爲克服 上述缺點’多數相機上設計自動對焦輔助燈（Auto Focus Aid Lights) ， 發射光束照亮被攝物體來幫助對焦 ，從而使被動式自動對焦利用類似主動式自動對焦之方 式克服由於光線亮度及對比度等不足所造成之對焦困難 094135088 表單編號A0101 第3頁/共12頁 1003380553-0 ^*+〇J〇 100年10月17日修正替餐頁 [0004] [0005] [0006] [0007] 〇 然》士 Λ ’一動式自動對焦或被動式自動對焦中獲取相機與被 攝物趙之距離後’需要使鏡頭移動-定距離，而該位移 之移動控制則需要辨別鏡頭於數位相機中之位置，否則 難以準確控制鏡頭之移動，習知技術大都依靠計算出所 *移動量，然後藉由致動器驅動鏡頭移動所需移動量， 由於移動過程沒有對鏡頭位置進行實時監測，鏡頭移動 量往往不能得到準確控制，理想移動量與實際移動量存 在差異，致使自動對焦效果不好。 【發明内容】 有鐘於此’提供一種可以實時監測鏡頭位置之數位相機 模組實為必要。 種數位相機模組，包括一套筒、一鏡頭模組及一測量 、罝。該鏡頭模組收容於套筒内，且可於套筒内軸向移 動"玄'則量裝置包括至少一設置於鏡頭模組上之探針， °亥探針可導電；至少一設置於套筒上之條狀電阻，且該 條狀電阻之位置與探針相對應，該電阻與該探針具有一 隨鏡頭模組相對於套筒移動之接觸點 ;及一測量單元， s測量單元分別與該探針及該電阻一端相電連接，形成 測量電阻與探針接觸點至電阻與該測量單元接觸端之 電阻值之迴路。 相較I知技術，所述數位相機模組之測量裝置實時監測 该鏡頭模組於套筒^之位置’便樵式電子裝 置即可藉由 該測量裝置❹之朗触位置祕精確㈣鏡頭模組 之移動。 094135088 表單编號A0101 笫4頁/共12頁 1003380553-0 1354.856 [0008] [0009] [0010] [0011] 094135088 100年10月17日核正替換頁 【實施方式】 本發明數位相機模組適用於行動電話、PDA(personal Digital Assistance，即個人數位助理）等便攜式電子 裝置。 凊參閱第-圖及第二圖所示，該數位相機模組包括一鏡 頭杈組10、一套筒20及一測量裝置3〇。該鏡頭模組1〇收 容於該套筒20内且可由相機之致動器驅動而於套筒2〇内 軸向移動。該測量裝置3〇用於測量鏡頭模組1〇於套筒2〇 内之位置，其包括至少一設置於鏡頭模組1〇上之探針31 、一执置於套琦20上之條形電阻33、及至少一與探針31 及條形電阻33—端相電連接之測量單元35 ^ 該鏡頭模組10包括一鏡筒U、至少一鏡片13及一紅外光 濾波片14。該鏡筒11呈半封閉中空圓筒狀，其一端固定 有一蓋體12，該盖體12上開有一入光孔121。該入光孔 1 21内嵌設有一透明板12 2，以封閉該鏡筒11避免粉塵等 雜質進入鏡筒11内。該鏡片13收容於鏡筒11内，且其與 入光孔1 21相對應。該紅外光濾波片14收容於鏡筒11中且 其接收鏡13射出之光線。該紅外光濾波片14用於濾除 來自被攝物反射至鏡筒11内之光線中多餘的紅外線，以 提高成像品質。在本實施方式中，該鏡筒11外壁軸向環 繞間隔開設有三個卡槽15。 該套筒20呈中空筒狀，其具有一内壁21，該内壁21圍成 一用於收容鏡頭模組10之容置部23。在本實施方式中， 該套筒20内壁21轴向間隔開設有三個條形容置槽25，且 該容置槽25之位置與鏡頭模組10之卡槽15相對應》 表單編號A0101 第5頁/共12頁 1003380553-0 1354856 [0012] [0013] [0014] 094135088 100年10月17日梭正替換百 該測量裝置3G之探針31係以導電材料製成，其可以採用 膠水黏合之方式固定於卡槽15中，且該探針31具有一突 出於鏡筒11外壁之探測部311。該測量I置3〇之電阻33 可以採用膠水黏合之方式固定於容置槽25中，且該電阻 3 3 ”探針31之探測部311相接觸》該測量裝置3 〇之測量 單元35可為—歐姆表，該測量單元35分別與探針31及電 阻33端相電連接，從而形成—測量探針3丨之探測部⑴ 與電阻33接觸點至電阻33與測量單元35電連接端之間之 電阻值之㊆路。該測量單元35還具有—㈣輸出端（圖未 示）’該訊號輪出端用於輸出該測量單元35測量到之電阻 值。 使用時’該數位相機模組之測量裝置3G之測量單元35之 訊號輸出端連接觸式電子裝置之微控制H(即Micro C_〇lle"nit)以將電阻值訊號傳送至該微控制器 。該微控制ϋ可根據不同之電阻值計算出鏡頭模組1〇在 套筒20内相應之位置。 工作時，該鏡頭·1Q在便攜式電子裝置之致動器驅動 下軸向於套筒2〇内移動，該探針31即相對於電阻33移動 ，二探針31之探測部311與電阻33接觸點至電阻33與測 量早凡35連接端之電阻值隨之發生變化，_量單元35 測量出電阻值並將該訊號傳送至微控制器。如此該鏡頭 模组1〇於套筒2°中之位置即可由微控制器實時監測。該 微控制器可祕該鏡顯組1Q之位置控制致動器對該鏡 頭模組U)之驅動’則在自動對焦時可以更精確的控制鏡 頭模組10之位移，提高成像品質。 第6頁/共12頁 表單編號A0101 1003380553-0 1354856 [0015] 100 年 10 月 在本較佳實施方式中，該測量單元35可同時測量位於同 一平面上三點之電 阻值。微控制器根據該三個電阻值之 大小’可以判斷該鏡頭模組10在移動過程中之傾斜狀況 [0016]紅上所述，本發明符合發明專利要件，爰依法提出專利 申凊。惟，以上所述者僅為本發明之較佳實施例，舉凡 熟悉本案技藝之人士，於援依本案發明精神所作之等效 修飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 [00Π]第圖係本發明數位相機模組之分解立體圖，其中測量 單元未圖示； [0018] 第二圖係本發明數位相機模組之别示圖。 【主要元件符號說明】 [0019] 鏡頭模組：10 [0020] 鏡筒：11 [0021] 蓋體：12 [0022] 入光孔：121 [〇〇23]透明板：122 [0024] 鏡片：13 [0025] 紅外光濾波片：14 [0026] 卡槽：15 [0027] 套筒：20 094135088 表單編號A0101 第7頁/共12頁 1003380553-0 1354856 100年10月17日修正替^頁 [0028] 套筒内壁：2 1 [0029] 容置部：23 [0030] 容置槽：25 [0031] 測量裝置：30 [0032] 探針：31 [0033] 探測部：311 [0034] 電阻：3 3 [0035] 測量單元：35 1003380553-0 094135088 表單編號A0101 第8頁/共12頁October 17th, 100th, the replacement page 1354.856, the invention description: [Technical field of the invention] [0001] The present invention relates to a digital camera module, and more particularly to a digital camera module capable of real-time monitoring of the lens position [Prior Art] [0002] In digital cameras, focusing is a key step in ensuring a clear image of recorded images. Focusing is used to adjust the distance between the lens and the image sensor so that the image plane of the lens falls on the imaging surface of the image sensor. At present, autofocus is often used in commonly used digital cameras, that is, according to the distance of the object to be photographed, the circuit drives the motor to move the lens to the corresponding position, so that the target is automatically and clearly imaged. [0003] Conventional autofocus can be divided into active autofocus and passive autofocus. Active autofocus: The camera emits infrared or ultrasonic waves to the subject. The sensor calculates the camera and the subject by the infrared signal or ultrasonic wave reflected from the camera through the digital signal processor (DSP, Digital Signal Processor) in the camera. The distance and then control the focus drive to move the lens for accurate focus. Passive Auto Focus: The camera accepts reflections from the subject itself to determine the distance for autofocus. The advantage of this type of focusing is that it does not need to emit light or waves, reduce energy consumption, and can focus accurately when the light is good. The disadvantage is that focusing is difficult when the brightness and contrast of the light are insufficient. In order to overcome the above shortcomings, most cameras design Auto Focus Aid Lights, which emit light to illuminate the subject to help focus, so that passive autofocus uses a similar approach to active autofocus to overcome the brightness and contrast. Inconsistent focus caused by insufficient focus 094135088 Form No. A0101 Page 3 / Total 12 Page 1003380553-0 ^*+〇J〇100 October 100 Amendment Order Page [0004] [0005] [0006] [0007] 〇 However, "Ji's 'After moving or passive autofocus to get the distance between the camera and the subject Zhao' needs to move the lens - the distance, and the displacement of the movement control needs to identify the position of the lens in the digital camera. Otherwise, it is difficult to accurately control the movement of the lens. Most of the conventional techniques rely on calculating the amount of movement, and then the amount of movement required to move the lens by the actuator. Since the movement of the lens is not monitored in real time, the amount of movement of the lens is often not obtained. Accurate control, the difference between the ideal movement amount and the actual movement amount, resulting in poor autofocus effect. SUMMARY OF THE INVENTION It is necessary to provide a digital camera module that can monitor the position of a lens in real time. The digital camera module comprises a sleeve, a lens module and a measuring device. The lens module is housed in the sleeve and can be axially moved within the sleeve. The "Xuan" measuring device includes at least one probe disposed on the lens module, and the probe is electrically conductive; at least one is disposed on a strip resistor on the sleeve, and the strip resistor is located corresponding to the probe, the resistor and the probe having a contact point with the lens module moving relative to the sleeve; and a measuring unit, the s measuring unit The probe and the one end of the resistor are electrically connected to each other to form a loop for measuring the resistance between the contact point of the resistor and the probe to the resistance of the contact end of the measuring unit. Compared with the prior art, the measuring device of the digital camera module monitors the position of the lens module in the sleeve in real time, and the portable electronic device can be accurately positioned by the measuring device (four) lens mode. Group move. 094135088 Form No. A0101 笫 4 pages / Total 12 pages 1003380553-0 1354.856 [0008] [0009] [0011] 094135088 October 17th, 100th nuclear replacement page [Embodiment] The digital camera module of the present invention is applicable It is a portable electronic device such as a mobile phone or a PDA (personal digital assistant). Referring to Figures -2 and 2, the digital camera module includes a lens unit 10, a sleeve 20 and a measuring device 3''. The lens module 1 is housed within the sleeve 20 and is axially movable within the sleeve 2 by a camera actuator. The measuring device 3 is configured to measure the position of the lens module 1 in the sleeve 2, and includes at least one probe 31 disposed on the lens module 1 and a strip disposed on the sleeve 20 The resistor 33, and at least one measuring unit 35 electrically connected to the probe 31 and the strip resistor 33-. The lens module 10 includes a lens barrel U, at least one lens 13 and an infrared light filter 14. The lens barrel 11 has a semi-closed hollow cylindrical shape, and has a cover body 12 fixed at one end thereof, and the cover body 12 has a light-receiving hole 121 formed therein. A transparent plate 12 2 is embedded in the light entrance hole 1 21 to close the lens barrel 11 to prevent dust and the like from entering the lens barrel 11. The lens 13 is housed in the lens barrel 11 and corresponds to the light entrance hole 121. The infrared light filter 14 is housed in the lens barrel 11 and receives the light emitted from the mirror 13. The infrared light filter 14 is for filtering out excess infrared rays from the light reflected from the object into the lens barrel 11 to improve the image quality. In the present embodiment, the outer wall of the lens barrel 11 is axially circumferentially spaced apart from three card slots 15. The sleeve 20 has a hollow cylindrical shape and has an inner wall 21 which encloses a receiving portion 23 for receiving the lens module 10. In the present embodiment, the inner wall 21 of the sleeve 20 is axially spaced apart from three strip-shaped receiving slots 25, and the position of the receiving slot 25 corresponds to the slot 15 of the lens module 10. Form No. A0101 Page 5 / Total 12 pages 1003380553-0 1354856 [0012] [0014] 094135088 On October 17, 100, the shuttle is replacing the probe 31 of the measuring device 3G with a conductive material, which can be glued. It is fixed in the card slot 15, and the probe 31 has a detecting portion 311 protruding from the outer wall of the lens barrel 11. The resistor 33 of the measuring device 3 can be fixed in the accommodating groove 25 by means of glue bonding, and the detecting portion 311 of the resistor 3 3 "the probe 31 is in contact with each other". The measuring unit 35 of the measuring device 3 can be An ohmmeter, the measuring unit 35 is electrically connected to the probe 31 and the end of the resistor 33, respectively, thereby forming a contact portion between the detecting portion (1) of the measuring probe 3 and the resistor 33 to the electrical connection between the resistor 33 and the measuring unit 35. The measuring unit 35 further has a (four) output terminal (not shown). The signal wheel output terminal is used for outputting the resistance value measured by the measuring unit 35. When used, the digital camera module The signal output end of the measuring unit 35 of the measuring device 3G is connected to the micro control H of the touch electronic device (ie, Micro C_〇lle"nit) to transmit the resistance value signal to the microcontroller. The micro control can be different according to the The resistance value calculates the corresponding position of the lens module 1 in the sleeve 20. In operation, the lens 1Q is axially moved in the sleeve 2〇 under the driving of the actuator of the portable electronic device, and the probe 31 is Detection of the two probes 31 relative to the movement of the resistor 33 The resistance of the portion 311 to the contact point 33 of the resistor 33 to the resistor 33 and the measurement terminal 35 is changed accordingly, and the measuring unit 35 measures the resistance value and transmits the signal to the microcontroller. Thus, the lens module 1〇 The position in the sleeve 2° can be monitored by the microcontroller in real time. The microcontroller can secretize the position of the mirror group 1Q to control the drive of the lens module U), which can be more in autofocus. Precisely controlling the displacement of the lens module 10 to improve the image quality. Page 6 of 12 Form No. A0101 1003380553-0 1354856 [0015] In October 2010, in the preferred embodiment, the measuring unit 35 can simultaneously measure The resistance value of three points on the same plane. The microcontroller can judge the tilting state of the lens module 10 during the movement according to the magnitude of the three resistance values. [0016] The present invention conforms to the invention patent requirement. The patent application is filed in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and those skilled in the art of the present invention should be included in the following equivalent modifications or changes in the spirit of the invention. [0011] The figure is an exploded perspective view of the digital camera module of the present invention, wherein the measuring unit is not shown; [0018] The second figure is a different type of digital camera module of the present invention [Main component symbol description] [0019] Lens module: 10 [0020] Lens barrel: 11 [0021] Cover: 12 [0022] Light hole: 121 [〇〇23] Transparent plate: 122 [0024 Lens: 13 [0025] Infrared light filter: 14 [0026] Card slot: 15 [0027] Sleeve: 20 094135088 Form number A0101 Page 7 / Total 12 pages 1003380553-0 1354856 Correction on October 17, 100 ^[0028] Inner wall of sleeve: 2 1 [0029] Housing: 23 [0030] Housing: 25 [0031] Measuring device: 30 [0032] Probe: 31 [0033] Detection: 311 [0034 ] Resistance: 3 3 [0035] Measuring unit: 35 1003380553-0 094135088 Form number A0101 Page 8 of 12