M3,45248 i v 焦或變焦之鏡頭組，尤指一種利用線圈及電磁鐵，並藉二 者之間所產生之電磁力以驅動並控制鏡頭進行滑動移位 者。 【先前技術】 目前使用之數位相機、具拍攝功能的手機、筆記型電 腦等手持式電子裝置上，常設有一可自動對焦 (auto-focusing，簡稱 AF )或變焦（zooming )之微型 鏡頭模組（compact camera module，簡稱CCM)，而該鏡 頭模組基本上包含：一由上蓋(Upper cover)及底蓋（bottom cover)所形成的容腔（housing); —鏡頭（lens )其由鏡片 群（lensgroup)及一鏡頭套筒（lensholder)組成，可套設在 容腔内並可在中心軸方向上前後滑動移位；及一鏡頭移位 機構（lens displacement mechanism)，或稱為制動器 (actuator )，其主要用以驅動該鏡頭在中心軸上產生移 位動作，藉以達成自動對焦或變焦之功效。 常見之鏡頭移位機構的設計如一種稱為壓電馬達 (piezoelectric motor )，其係利用壓電 (piezoelectric)材料原理形成，如 US7,212, 358、 US2003/0227560 、JP2006-293083、JP2006-101611 等；但一 般所使用之壓電材料無法耐受迴焊（refl〇w)作業之高溫 (約260 °C )，或耐受高溫之特別壓電材料又相當昂貴， 故不利於量產化或降低製造成本。又一種稱為音圈馬達 (voice coil motor，簡稱VCM)者，其係利用線圈、磁 鐵、與彈性件（如彈簣或彈片）配合形成，如 US7, 262, 927、US7,196, 978、US7, 002, 879、US6, 961，090、 4 .M3.45248 US6,687,062 、 US20070133110 、 JP2005037865 、 JP2005258355、W02007026830等，該等習知技術大部分係 利用線圈與永久磁鐵（permanent magnet)配組使用，如圖 1，如在線圈31之内圍或外圍環狀排列設置一個或數個永 久磁鐵70，使線圈31通電後產生磁場，而可與由一個或數 個永久磁鐵70所建立之磁場及磁極之間形成向上或向下之 電磁力以驅動鏡頭移動；但永久磁鐵在迴焊高溫時（約 260 °C )將會使磁鐵退磁。因此上述習用之壓電馬達與音 圈馬達在組裝時皆不可使用迴焊方式，致在量產效率上受 到限制。再者，有一種是利用形狀記憶合金（Shaped memory alloy，簡稱SMA )之鏡頭移位機構，其係利用 SMA之熱縮冷旅之特性以作為制動器（actuat〇ir )之驅動 力源，如 US 6, 307, 678B2、US 6, 449, 434B1、 US2007058070 、 US2007047938 、 JP2005275270 、 JP2005195998專，然而，SMA熱縮冷漲的動作較慢，無法 簡易達成即時自動對焦或變焦之功效。 對於高晝質需求的使用者，在低照度的環境為維持相 當優秀的行動力與拍照品質’防手震（Anti shake)功能已 漸受相當重視。在習知技術中，防手震技術主要透過幾個 方式來達成，如成像兀件CCD以機械支架藉由補償運動來 抵銷震動過程中所導致的影像模糊化影響，或如在鏡頭設 有機械式結構消除手震’或以軟體計算補償的方式，或提 高感光度能力，或採用兩個陀螺儀來進行對成像元件CCD 的水平與垂直震動偵測，並利用磁力推動來進行補償動作 等，如EP1729509 、 US20070292119 、 US20070009243 、 5 M345248 « i JP08122840、JF41305280、jpi1220651 等。 使用電磁力為鏡頭移位機構之主要動力來源，具有其 方便性與通用性，為能在迴焊高溫時（約26〇。〇)磁力不 • 欠破壞’雖可使用特殊材料製成耐高溫永久磁鐵，但其因 之一為價格過於昂貴，其因之二磁力較弱，故無法普及使 ·- 用；因此發展新技術以解決鏡頭移位機構迴焊問題，將為 ， 迫切所需。 【新型内容】 φ 本創作主要目的在於提供一種鏡頭移位機構，其係利 用線圈（conductor coil )及相對於線圈排列於線圈周圍之 電磁鐵組(electromagnetset)所組成，其中線圈係固設於鏡頭 套筒上，當線圈受力移動時可使鏡頭套筒及其上的鏡片群 沿中心軸移動；鏡頭移位機構之電磁鐵組通以電流後可在 電磁鐵端面產生N極或S極電磁力，使線圈通電後產生電 磁力，其電磁力方向可由安培右手定律而決定，致趨使鏡 頭沿中心軸移動，而達成鏡片群移動之變焦目的；或當對 • 線圈施以不同方向之電流，可控制鏡頭以前進或後退之方 向，以適用於一自動對焦或變焦之鏡頭模組；藉此結構可 • 耐迴焊（reflow )高溫而可提高量產化，以改良習知技術 . 使用永久磁鐵無法使用迴焊製程之困難。 本創作再一目的在於提供一種鏡頭移位機構，其中電 磁鐵組係由複數個電磁鐵所構成，其具有防手震功能，可 藉由控制各電磁鐵之電流大小或電流方向，使線圈通過電 流後，可受到各電磁鐵之不同電磁力所產生不平衡的電磁 力作用，使鏡頭之光軸會與鏡頭中心軸產生一角度，使鏡 6 .M3,45248 =可對向被攝物體，達成防手震功能之自動對焦或變焦 步可目的在於提供一種鏡頭移位機構，其進-碩2鏡頭套筒上配置-彈菁“― 生作用⑮使虽線圈與電磁鐵組之間的電磁力消失或不產 使該鏡頭回;12:對鏡頭套筒提供-相對之回復力，以 效果。 复至原平衡狀態或原位而達成自動對焦或變焦 【貫施方式】 下列=使本創作更加明確詳實，兹列舉較佳實施例並配合 :不將本創作之結構及其技術特徵詳述如後·· 位機槿ft以下所揭示之實施例’乃是針對本創作鏡頭移 眚A主要構成元件而作說明，因此本創作以下所揭示 一^例雖是應料—自動對焦或變焦鏡頭模組中，但就 "具有自動對焦或變焦功能之鏡頭模組而言，除了本創 ^所揭示之鏡頭移位機構外，其他結構乃屬一般通知之技 =，因此一般在此領域中熟悉此項技藝之人士瞭解，本創 7所揭示自動對域變焦鏡頭模組之構成元件並不限制於 二下所揭示之實施例結構，也就是該自動對焦或變焦鏡頭 二組之各構成元件是可以進行許多改變、修改、甚至等效 變更的，例如：該鏡頭模組中由上蓋及底蓋所形成的容腔 之形狀設計並不限制，也就是鏡頭模組之内部空間設計並 不限制；或由鏡片群及一鏡頭套筒組成之鏡頭的整體形狀 或結構型態也不限制，如該鏡片群可包含由單一鏡片或數 個鏡片構成之鏡片群，且單一鏡片或鏡片群一般可先容設 7 .M345248 在一固定件内而再與一鏡頭套筒結合形成一鏡頭；或本創 作線圈與電磁鐵組之個別的線圈匝（turn )數、線圈内徑 (或線圈内徑截面積）、線圈高度、電磁鐵内線圈高度或 電流進出方向及大小等也不限制，且可依據必歐-沙瓦定 律（Biot-Savart Law)及相關安培右手定律計算式計算，如下 列式（1)及式（2) 呑，字 ⑴ F = lfxB (2) 其中，B為磁通量密度，A)為真空導磁率 (permeability )/為線圈電流（Amp)，/是線段長度，r 是距離，F是受力大小。由式（1)與式（2)可分別計算本 創作電磁鐵的磁通量密度以及線圈受力大小藉以配合鏡頭 之重量以設計最佳驅動力。 參考圖2、3所示，其係本創作一實施例之立體示意 圖，本創作鏡頭移位機構3主要包含一線圈31及一電磁鐵 組32，其中，該線圈31係固設於鏡頭2之鏡頭套筒22上以 與鏡片群（lens group)21共同組成一連動體而可同步移動； 該電磁鐵組32係由複數個電磁鐵如圖3所示321〜324構 成且保持固定不動；使用時，可藉控制器（圖2、3中未 示，可參考圖4所示）如相機之控制器以對線圈31及電磁 鐵組32輸出不同方向（流入或流出）或不同大小之電流， 而藉由電磁作用可在電磁鐵組32之各電磁鐵321〜324的 端面產生磁力，其磁力之大小及方向則由輸入之電流大小 及方向所控制；而線圈31輸入電流後依據安培右手定律產 8 .M345248 生電磁力，可計算出線圈31受電磁力之大小及受力方向， 線圈31將因受力沿鏡頭中心轴Z軸運動，以達自動對焦或 變焦效果。說明如圖4，利用相機之控制器37輸出電流 後，經由電磁鐵電極35連接至電磁鐵組32之電磁鐵（I ) 321及電磁鐵（III) 323 (可同時包含電磁鐵（II) 322 及電磁鐵（IV) 324 )，則電磁鐵（I ) 321及電磁鐵 (III) 323之電磁鐵心36的端面可產生電磁作用，若輸入 之電流方向為逆時針，則電磁鐵心36在朝向鏡頭中心軸Z 的端面會產生N極電磁；當相機之控制器37輸出電流後， 經由線圈電極34連接至線圈31時，線圈31會產生磁場，若 輸入線圈31電流為逆時針方向，線圈31則產生電磁力，若 輸入線圈31電流為逆時針方向，則線圈31會受到向物侧之 電磁力’將帶動鏡頭2向物側方向移動。 本創作鏡頭移位機構3進一步可分別控制電磁鐵組32 中各電磁鐵321〜324之電流大小或電流方向，以控制各 電磁鐵所產生磁力（或電磁強度）之大小，使線圈31通電 後因與各電磁鐵（如321〜324 )之間的電磁力大小不 同，致受到不平衡的電磁力作用，使鏡頭2之光軸會與鏡 頭中心軸Z軸產生一角度，使鏡頭2可偏移該角度以對向 被攝物體；玆以圖5為例說明，鏡頭移位機構3之電磁鐵 組32係由電磁鐵（I) 321及電磁鐵（III) 323所組成， 若控制電磁鐵組32之電磁鐵（I ) 321及電磁鐵（III) 323，使具有不同的電流大小時，電磁鐵（I ) 321及電 磁鐵（III) 323之電磁力不同^線圈31通過電流後，將受 到電磁鐵321及電磁鐵（III) 323之不同電磁力所產生不 9 .M345248 平衡的電磁力作用，使鏡頭2之光軸會與鏡頭中心轴2轴 產生-角度’使鏡頭2可對向被攝物體，達防手震功能。 前述之電磁鐵組32之電磁鐵心36為利用軟磁材料 (ferrite )製成；該軟磁材料具有易磁化且易退磁的特 性，其在電磁鐵組32通電後中非常容易被磁化，可將磁力 線集中於電磁鐵心36端面，但當電磁鐵組幻不通電時，電 磁鐵心36之磁力也隨即消失，也就是軟磁材料本身無保持 磁化的能力；而目前軟磁材料主要成份可為高純度鐵（熟 鐵、軟鐵）、含碳量很低的鋼、矽鋼、鐵鎳合金（Fe_Ni Alloy 或 Permalloys)、鎂鋅合金（Mg_ZnaU〇y)、鎳鋅合金 (Ni-Znalloy)、錳鋅合金（Mn-Znalloy)、或金屬玻璃 (metallicglass)等，均可耐受迴焊高溫，可依據不同目的 選擇。 本創作鏡頭移位機構3進一步可在鏡頭2上配置一具 有回復彈性功能的彈簧38，當線圈31或電磁鐵組32之間的 電磁力消失時，該彈簧38可對鏡片群21提供一相對之回復 力，也就疋對鏡頭2提供一與所產生電磁力相反之彈簧 力，用以將鏡片群21回復至電磁力作用前之原位；至於該 彈簧38之彈性型態如壓縮式（。卿職―）彈菁或伸張式 (extension )彈簧、結構型態如線圈彈簧或非線圈彈簧、 數目或設立位置等並;^限制，可隨鏡頭模組2之料需要 或線圈31的運動方向而改變。 本創作線圈31或電磁鐵組32之線圈繞設型態、電流方 向、電磁鐵組32之電磁鐵數目及彈簧37型式等可隨需要而 作不同選擇。 M345248 瞥 » <第一實施例 > 具有四個電磁鐵之鏡頭移位機構 參考圖2、3所示，本實施例之鏡頭移位機構3可應 用於一小型相機之自動對焦或對焦鏡頭模組1中，該鏡豆頁 模組1為l〇mmX 10mm之方型模組，其中該鏡頭模纟且1美 本上至少包含上蓋11及底蓋12所形成的容腔，供一鏡頭2 可在容腔内之中心軸Z方向上滑動移位；該鏡頭2 —般包 含一由單一鏡片或數個鏡片構成之鏡片群21以及一供容設 該鏡片群21之鏡頭套筒22，也就是鏡片群21及鏡頭套筒22 是組成一可同步移動的鏡頭2，且套設在容腔内而可在中 心轴Z上以前進或後退（朝向物侧或朝向像侧）滑動移 位。 本創作之鏡頭移位機構3包含：一線圈31、一電磁鐵 組32、一導電片33、一線圈電極34及一電磁鐵電極35 ;其 中’線圈31係固設於鏡頭2之鏡頭套筒22上以與鏡片群 (lensgn>up)21共同組成一連動體而可同步移動；該電磁鐵 組32係由數個電磁鐵如電磁鐵（I ) 321、電磁鐵（II ) 322、電磁鐵323及電磁鐵（IV) 324等四個電磁 鐵構成且保持固定不動；又相機之控制器（如圖4之控制 器37)可輸出不同方向或不同大小之電流（流入或流出） 經由電磁鐵電極35包含電磁鐵（〗）電極351、電磁鐵 (11 )電極352、電磁鐵（III)電極353及電磁鐵（IV) 電極354 ’分別輸入電磁鐵組32之各電磁鐵，本實施例之 電磁鐵組32如圖2所示包含電磁鐵（I) 321、電磁鐵 (II ) 322、電磁鐵（) 323及電磁鐵（IV ) 324等四 個電磁鐵，係以90度方位均勻佈設並固定於線圈31之外 11 M345248 圍。當控制器37輸出電流（h、I2、I3、I4 )經由各電磁 鐵電極35進入電磁鐵組32之各電磁鐵321〜324時，藉由 電磁作用，可在各電磁鐵321〜324之電磁鐵心36產生N 極或S極之磁力，此磁力之大小及方向則由輸入之電流大 小及方向所控制，本實施例中該四個電磁鐵321〜324之 磁力相當，且電磁鐵心36之N極均為朝向鏡頭之中心軸 Z。再者，為使電磁鐵組32之電磁效率最強，本實施例之 電磁鐵（I ) 321、電磁鐵（II ) 322、電磁鐵（III) 323及電磁鐵（IV) 324之電磁鐵心36選擇使用矽鋼片為 材質。 控制器37輸出電流I經由線圈電極34與連接之導電片 33進入線圈31時，電流方向為逆時針方向，依據右手定 律，則線圈31受向上方向（物侧方向）之電磁力，連同使 鏡頭套筒22與鏡片組21沿鏡頭中心軸Z向上（物侧方向） 移動；若當控制器37輸出電流I方向為順時針方向，線圈 31，依據法拉第右手定律，則線圈31受向下方向（像侧方 向）之電磁力，連同使鏡頭套筒22與鏡片群21沿鏡頭中心 軸Z向下（像侧方向）移動；如此可達成移動鏡頭而達成 對焦之目的。 當控制器37切斷輸出電流I時，線圈31不再產生磁 場，線圈31不再受到電磁力之作用，鏡頭2則不再移動； 或當控制器37切斷輸出電流h、12、13、14時，電磁鐵 321、322、323、324不再產生磁力，鏡頭2則不再移 動。表一為本實施例使用電流之方向及電流大小。 12 .M345248 表一、-本實施何電流大小 電流安培/方向 τ “合闽m 1CA -—頭向像侧移動 12 13 、-一jSOmA 順時針 Ιι(電磁鐵電流）75mA逆時·針M3, 45248 i v A lens group that focuses or zooms, especially one that uses a coil and an electromagnet, and uses the electromagnetic force generated between the two to drive and control the lens for sliding shift. [Prior Art] Currently, a digital camera such as a digital camera, a mobile phone with a shooting function, a notebook computer, or the like has a micro lens module that can be auto-focusing (AF) or zooming (Zooming). a compact camera module (CCM), and the lens module basically comprises: a housing formed by an upper cover and a bottom cover; a lens (lens) consisting of a lens group ( Lensgroup) and a lens holder, which can be sleeved in the cavity and can be slidably displaced back and forth in the direction of the central axis; and a lens displacement mechanism, or actuator It is mainly used to drive the lens to produce a shifting action on the central axis, thereby achieving the effect of autofocus or zoom. A common lens shifting mechanism is designed, for example, as a piezoelectric motor, which is formed using the principle of a piezoelectric material, such as US 7,212,358, US 2003/0227560, JP2006-293083, JP2006-101611. Etc.; however, the piezoelectric materials generally used cannot withstand the high temperature of reflow (ref 〇 w) operation, or the special piezoelectric materials that are resistant to high temperatures are quite expensive, which is not conducive to mass production or Reduce manufacturing costs. Another type of voice coil motor (VCM) is formed by using a coil, a magnet, and an elastic member such as a magazine or a spring piece, such as US 7,262,927, US 7,196,978. US7, 002, 879, US6, 961, 090, 4, M3.45248, US 6,687, 062, US20070133110, JP2005037865, JP2005258355, W02007026830, etc., most of these conventional techniques utilize a coil and a permanent magnet. As shown in FIG. 1, one or a plurality of permanent magnets 70 are arranged in a ring shape around the circumference or the periphery of the coil 31, so that the coil 31 is energized to generate a magnetic field, and the magnetic field established by one or several permanent magnets 70 and An upward or downward electromagnetic force is formed between the magnetic poles to drive the lens to move; however, the permanent magnet will demagnetize the magnet at a reflow high temperature (about 260 ° C). Therefore, the conventional piezoelectric motor and the voice coil motor are not reflowable when assembled, which limits the mass production efficiency. Furthermore, there is a lens shifting mechanism using a Shaped Memory Alloy (SMA), which utilizes the characteristics of the heat shrinking cold of the SMA as a driving force source for the brake (actuat〇ir), such as US. 6, 307, 678B2, US 6, 449, 434B1, US2007058070, US2007047938, JP2005275270, JP2005195998, however, SMA heat shrinking cold movement is slow, can not easily achieve instant auto focus or zoom effect. For users with high enamel demand, in order to maintain relatively good mobility and photo quality in a low-light environment, the anti-shake function has received considerable attention. In the prior art, the anti-shake technique is mainly achieved in several ways, such as the imaging element CCD mechanically supporting the motion to compensate for the image blurring caused by the vibration process, or as in the lens. The mechanical structure eliminates the jitter of the hand or compensates by the software, or improves the sensitivity, or uses two gyroscopes to detect the horizontal and vertical vibration of the imaging element CCD, and uses the magnetic force to compensate the action. Such as EP1729509, US20070292119, US20070009243, 5 M345248 « i JP08122840, JF41305280, jpi1220651 and so on. The use of electromagnetic force as the main power source of the lens shifting mechanism has its convenience and versatility. It can be used for high temperature resistance when reflowing high temperature (about 26 〇. 〇). Permanent magnets, but one of them is too expensive, and because of its weak magnetic force, it cannot be popularized. Therefore, the development of new technologies to solve the problem of re-welding of the lens shifting mechanism will be urgently needed. [New content] φ The main purpose of this creation is to provide a lens shifting mechanism which is composed of a conductor coil and an electromagnetset arranged around the coil with respect to the coil, wherein the coil system is fixed to the lens On the sleeve, when the coil is moved by force, the lens sleeve and the lens group thereon can be moved along the central axis; the electromagnet group of the lens shifting mechanism can generate N-pole or S-pole electromagnetic on the end face of the electromagnet after passing the current. Force, the electromagnetic force is generated after the coil is energized, and the direction of the electromagnetic force can be determined by Ampere's right-hand rule, which tends to move the lens along the central axis to achieve the zooming purpose of the lens group movement; or when the coil is applied with different directions of current It can control the lens in the direction of forward or backward to apply to an autofocus or zoom lens module. This structure can be reflow-resistant and can be mass-produced to improve the conventional technology. The difficulty of using a reflow process for permanent magnets. A further object of the present invention is to provide a lens shifting mechanism, wherein the electromagnet group is composed of a plurality of electromagnets, which have an anti-shake function, and can control the current or current direction of each electromagnet to pass the coil. After the current, it can be affected by the unbalanced electromagnetic force generated by the different electromagnetic forces of the electromagnets, so that the optical axis of the lens will produce an angle with the central axis of the lens, so that the mirror 6. M3, 45248 = can be opposed to the subject, The autofocus or zoom step that achieves the anti-shake function can be used to provide a lens shifting mechanism that is configured on the Into 2 lens sleeve - the elastic action "" acts 15 to make the electromagnetic between the coil and the electromagnet group The force disappears or does not produce the lens back; 12: Provides a relative restoring force to the lens sleeve to achieve the effect. Re-focus to the original balance or in-situ to achieve autofocus or zoom [continuous mode] The following = make this creation More specific and detailed, the preferred embodiments are listed and cooperated: the structure and the technical features of the present invention are not described in detail as follows. The embodiment disclosed in the following is the main focus of the creation lens. As a component, the following is an example of an autofocus or zoom lens module, but in addition to the lens module with autofocus or zoom function, Other than the disclosed lens shifting mechanism, other structures are generally notified techniques. Therefore, those skilled in the art are generally aware that the components of the automatic zoom lens module disclosed in the present invention are not The structure of the embodiment disclosed in the second embodiment is that the components of the autofocus or zoom lens group can be changed, modified, or even changed in an equivalent manner. For example, the lens module is covered by the upper cover and the bottom. The shape of the cavity formed by the cover is not limited, that is, the internal space design of the lens module is not limited; or the overall shape or structure of the lens composed of the lens group and a lens sleeve is not limited, such as The lens group may comprise a lens group consisting of a single lens or a plurality of lenses, and a single lens or lens group may generally be provided with a 7. M345248 in a fixed part and then a lens. The barrel is combined to form a lens; or the number of individual turns of the coil and the electromagnet group, the inner diameter of the coil (or the inner diameter of the coil), the height of the coil, the height of the coil in the electromagnet, or the direction and size of the current in and out It is also not limited, and can be calculated according to Biot-Savart Law and related right-handed law calculation formulas, such as the following formula (1) and formula (2) 呑, word (1) F = lfxB (2) Where B is the magnetic flux density, A) is the vacuum permeability (permeability) / is the coil current (Amp), / is the length of the line segment, r is the distance, and F is the force magnitude. From equations (1) and (2) Calculate the magnetic flux density of the electromagnet and the force of the coil to match the weight of the lens to design the optimal driving force. Referring to FIG. 2 and FIG. 3, which is a perspective view of an embodiment of the present invention, the lens shifting mechanism 3 mainly includes a coil 31 and an electromagnet group 32, wherein the coil 31 is fixed to the lens 2. The lens sleeve 22 is combined with a lens group 21 to form a linkage body for synchronous movement; the electromagnet group 32 is composed of a plurality of electromagnets as shown in FIG. 3 and is fixed and fixed; When the controller (not shown in FIG. 2, 3, as shown in FIG. 4), such as the controller of the camera, the coil 31 and the electromagnet group 32 are outputted in different directions (inflow or outflow) or different magnitudes of current, The electromagnetic force can generate magnetic force on the end faces of the electromagnets 321 to 324 of the electromagnet group 32, and the magnitude and direction of the magnetic force are controlled by the magnitude and direction of the input current; and the coil 31 inputs the current according to the right-hand rule of Ampere. Produce 8. M345248 Electromagnetic force, can calculate the magnitude of the electromagnetic force of the coil 31 and the direction of the force, the coil 31 will be forced to move along the Z axis of the lens center axis to achieve auto focus or zoom effect. 4, after the current is output by the controller 37 of the camera, the electromagnet (I) 321 and the electromagnet (III) 323 of the electromagnet group 32 are connected via the electromagnet electrode 35 (the electromagnet (II) 322 can be included at the same time. And the electromagnet (IV) 324), the electromagnet (I) 321 and the electromagnet (III) 323 of the end face of the electromagnet core 36 can generate electromagnetic action, if the input current direction is counterclockwise, the electromagnet core 36 is facing the lens The end face of the central axis Z generates N-pole electromagnetic; when the controller 37 of the camera outputs a current, when the coil electrode 34 is connected to the coil 31, the coil 31 generates a magnetic field, and if the current of the input coil 31 is counterclockwise, the coil 31 When the electromagnetic force is generated, if the current of the input coil 31 is counterclockwise, the coil 31 receives the electromagnetic force toward the object side to move the lens 2 toward the object side. The lens shifting mechanism 3 can further control the current magnitude or current direction of each of the electromagnets 321 to 324 in the electromagnet group 32 to control the magnitude of the magnetic force (or electromagnetic strength) generated by each electromagnet, so that the coil 31 is energized. Because of the different electromagnetic force between each electromagnet (such as 321~324), it is affected by the unbalanced electromagnetic force, so that the optical axis of the lens 2 will be at an angle with the Z axis of the lens central axis, so that the lens 2 can be biased. The angle is shifted to the object to be photographed. As shown in FIG. 5, the electromagnet group 32 of the lens shifting mechanism 3 is composed of an electromagnet (I) 321 and an electromagnet (III) 323. Group 32 electromagnet (I) 321 and electromagnet (III) 323, when the current is different, the electromagnetic force of electromagnet (I) 321 and electromagnet (III) 323 is different. By the different electromagnetic forces of the electromagnet 321 and the electromagnet (III) 323, the electromagnetic force of the balance of the M. M345248 is generated, so that the optical axis of the lens 2 and the axis 2 of the lens are generated at an angle - the lens 2 can be opposed The object is captured and the anti-shake function is achieved. The electromagnet core 36 of the electromagnet group 32 is made of a soft magnetic material; the soft magnetic material has an easy magnetization and easy demagnetization property, and is easily magnetized after the electromagnet group 32 is energized, and the magnetic lines of force can be concentrated. On the end face of the electromagnet core 36, when the electromagnet group is not energized, the magnetic force of the electromagnet core 36 also disappears, that is, the soft magnetic material itself has no ability to maintain magnetization; and the main component of the soft magnetic material can be high-purity iron (wrought iron) , soft iron), steel with very low carbon content, niobium steel, iron-nickel alloy (Fe_Ni Alloy or Permalloys), magnesium-zinc alloy (Mg_ZnaU〇y), nickel-zinc alloy (Ni-Znalloy), manganese-zinc alloy (Mn-Znalloy ), or metallic glass, etc., can withstand reflow high temperature, can be selected according to different purposes. The lens shifting mechanism 3 can further configure a spring 38 having a resilient function on the lens 2. The spring 38 can provide a relative lens group 21 when the electromagnetic force between the coil 31 or the electromagnet group 32 disappears. The restoring force, that is, providing the lens 2 with a spring force opposite to the generated electromagnetic force for returning the lens group 21 to the original position before the electromagnetic force acts; as for the elastic type of the spring 38, such as compression type (卿职-) elastic or extension type spring, structural type such as coil spring or non-coil spring, number or set position, etc.; ^ limit, with the lens module 2 material requirements or the movement of the coil 31 Change direction. The winding pattern of the present coil 31 or the electromagnet group 32, the current direction, the number of electromagnets of the electromagnet group 32, and the type of the spring 37 can be selected as needed. M345248 &»First Embodiment> Lens shifting mechanism having four electromagnets Referring to Figs. 2 and 3, the lens shifting mechanism 3 of the present embodiment can be applied to an autofocus or focus lens of a compact camera. In the module 1, the mirror page module 1 is a square module of l〇mmX 10mm, wherein the lens is molded and includes at least a cavity formed by the upper cover 11 and the bottom cover 12 for a lens. 2 can be slidably displaced in the Z direction of the central axis in the cavity; the lens 2 generally comprises a lens group 21 composed of a single lens or a plurality of lenses, and a lens sleeve 22 for accommodating the lens group 21, That is, the lens group 21 and the lens sleeve 22 are formed into a synchronously movable lens 2, and are sleeved in the cavity and can be moved forward or backward (toward the object side or toward the image side) on the central axis Z. . The lens shifting mechanism 3 of the present invention comprises: a coil 31, an electromagnet group 32, a conductive sheet 33, a coil electrode 34 and an electromagnet electrode 35; wherein the 'coil 31 is fixed to the lens sleeve of the lens 2 22 is synchronously moved with a lens group (lensgn>up) 21 to form a linkage; the electromagnet group 32 is composed of a plurality of electromagnets such as an electromagnet (I) 321, an electromagnet (II) 322, and an electromagnet. 323 and electromagnet (IV) 324 and other four electromagnets are formed and remain fixed; and the camera controller (such as controller 37 in Figure 4) can output currents in different directions or different sizes (inflow or outflow) via electromagnet The electrode 35 includes an electromagnet ( EI) electrode 351 , an electromagnet ( 11 ) electrode 352 , an electromagnet ( III ) electrode 353 , and an electromagnet ( IV ) electrode 354 ′ respectively input to the electromagnets of the electromagnet group 32 , and the present embodiment As shown in FIG. 2, the electromagnet group 32 includes four electromagnets such as an electromagnet (I) 321, an electromagnet (II) 322, an electromagnet () 323, and an electromagnet (IV) 324, and is evenly arranged in a 90-degree orientation. It is fixed around the coil 31 outside the 11 M345248. When the output current (h, I2, I3, I4) of the controller 37 enters the electromagnets 321 to 324 of the electromagnet group 32 via the electromagnet electrodes 35, electromagnetic waves can be applied to the electromagnets 321 to 324. The core 36 generates a magnetic force of the N pole or the S pole. The magnitude and direction of the magnetic force are controlled by the magnitude and direction of the input current. In this embodiment, the magnetic forces of the four electromagnets 321 324 324 are equivalent, and the core of the electromagnet core 36 The poles are all facing the central axis Z of the lens. Furthermore, in order to maximize the electromagnetic efficiency of the electromagnet group 32, the electromagnets (I) 321 , the electromagnets (II) 322, the electromagnets (III) 323 and the electromagnets (IV) 324 of the electromagnet core 36 of the present embodiment are selected. Use steel sheet as material. When the output current I of the controller 37 enters the coil 31 via the coil electrode 34 and the connected conductive sheet 33, the current direction is counterclockwise, and according to the right-hand law, the coil 31 is subjected to the electromagnetic force in the upward direction (object side direction) together with the lens. The sleeve 22 and the lens group 21 move upward (object side direction) along the lens center axis Z; if the controller 37 outputs the current I direction in the clockwise direction, the coil 31, according to Faraday's right-hand law, the coil 31 is subjected to the downward direction ( The electromagnetic force of the image side direction, together with moving the lens sleeve 22 and the lens group 21 downward (image side direction) along the lens center axis Z, achieves the purpose of moving the lens to achieve focusing. When the controller 37 cuts off the output current I, the coil 31 no longer generates a magnetic field, the coil 31 is no longer subjected to the electromagnetic force, and the lens 2 no longer moves; or when the controller 37 cuts off the output currents h, 12, 13, At 1400, the electromagnets 321, 322, 323, 324 no longer generate magnetic force, and the lens 2 no longer moves. Table 1 shows the direction and current magnitude of the current used in this embodiment. 12 .M345248 Table 1 - The current current size of this implementation Current amperage / direction τ "Combined m 1CA - head moving to the image side 12 13 , - a jSOmA clockwise Ι 1 (electromagnet current) 75 mA counterclockwise needle
75mA 逆時針 75mA逆時針75mA counterclockwise 75mA counterclockwise
U 75mA 逆時針U 75mA counterclockwise
、又本實施例使狀彈*38係㈣*崎成之線圈彈簧 且為壓縮式彈簧’其係安排於鏡片群21與上蓋n之間，當 線_通以電流後受到向上之力量移動時，將帶動鏡頭套 筒22及鏡片群21向上移動，此時將壓迫彈簧如產生變形； 當線圈31切斷電流後，向上電磁力消失，彈簧弘不再受壓 迫而回復原狀，將推動鏡頭2回復原位。 <第二實施例 > 具有二個電磁鐵之鏡頭移位機構 參考圖6所示，本實施例之鏡頭移位機構3係應用於 一小型相機之自動對焦或對焦鏡頭模組丨中，該鏡頭模組 1為8mmx8mm之圓型模組，包含··一線圈31、一電磁鐵 組32、一導電片33、一線圈電極34、一電磁鐵電極35 ;其 中，電磁鐵組32係由二個電磁鐵所構成，包含電磁鐵 (I ) 321、電磁鐵（II ) 322及電磁鐵（ΪΙΙ) 323，該 三個電磁鐵係以120度方位均勻佈設於線圈31外圍並固定 不動’當控制器37輸出電流（I〗、I2、I3 )經由各電磁鐵 電極35進入電磁鐵組32中各電磁鐵321、322、323，及 控制器37輸出電流I經由線圈電極34及相連接之導電片％ 13 .M345248 而進入線圈31時，則線圈31受向上方向（物侧方向）之電 磁力，連同使鏡頭套筒22與鏡片組21沿鏡頭中心軸Z向上 (物侧方向）移動；若當控制器37切斷輸出電流，則線圈 31不再受電磁力。表二為本實施例使用電流之方向及電流 大小。 表二、本實施例使用電流之方向及電流大小 電流安培/方向 鏡頭向物側移動 鏡頭向像侧移動 I (線圈電流） 150mA 逆時針 150mA 逆時針 工1(電磁鐵電流） 100mA 順時針 100mA 順時針 h 100mA 順時針 100mA 順時針 13 100mA 順時針 100mA 順時針 <第三實施例 >具有防手震功能之鏡頭移位機構 參考圖2所示，本創作之鏡頭移位機構3係可應用於 一自動對焦或對焦鏡頭模組1中，且進一步可設計成獨立 控制電磁鐵組32之電磁鐵之磁力大小，以使鏡頭2之光軸 與鏡頭模組1之中心軸Z之間產生一個角度偏移，使鏡頭 2可對向被攝物體（object )，藉以達成防手震功能。於 本實施例中，鏡頭移位機構3包含：一線圈31、一電磁鐵 組32、一導電片33、一線圈電極34、一電磁鐵電極35 ;其 中，相機之控制器（如圖3之控制器37)可輸出不同方向 或不同大小之電流（流入或流出）經由電磁鐵電極35輸入 電磁鐵組32中，在本實施例，電磁鐵組32係由四個電磁鐵 所構成，包含電磁鐵（I ) 321、電磁鐵（II ) 322、電 磁鐵（III) 323及電磁鐵（IV) 324等四個電磁鐵，該四 個電磁鐵321〜324係以90度方位均勻佈設並固定於線圈 .M345248 外圍，當控制器37輸出電、流（11、12、13、14)經由四 組電磁鐵電極35(電磁鐵丨電極351、電磁鐵〗〗電極 352、電磁鐵ΙΠ電極353、電磁鐵IV電極354 )進入電磁 鐵（I ) 321、電磁鐵（Π ) 322、電磁鐵您及 電磁鐵（IV) 324 ’藉由電磁作用，可在各電磁鐵321〜 • 324之電磁鐵心36產生N極或S極之磁力，此磁力之大小 : 及方向則由輸入之電流大小及方向所控制，本實施例中該 四個電磁鐵321〜324之電磁力可分別控制，可為 • 為朝向鏡頭之中心，也可單獨控制使單一個電磁鐵之8極 朝向鏡頭之中心。本實施例使用之電磁鐵321〜324之電 磁鐵心36為使用鐵鎳合金（permall〇yS)所製成，鐵錄合金導 磁性低且具有高度的電磁敏感度，當對電磁鐵321〜324 通以快速變換的電流時，可快速的反應電磁力，以利於獨 立控制每個電磁鐵的電磁力大小。 如圖5，電磁鐵（I ) 321與電磁鐵（III) 323為相 對佈位於180度方位，如圖5所示；當使用者持相機向上 震動時，被攝物相對偏離鏡頭中心軸2軸，向义軸方向移 • 動，為補足此震動量，此時可由控制器37對電磁鐵（j ) 與電磁鐵（III) 323施以不同電流，如對電磁鐵 (I) 321施以較小電流、對電磁鐵（m) 323施以較大 電流；此時線圈31將受到電磁鐵（I ) 321及電磁鐵 (冚）323之間不同電磁力致產生不平衡的受力作用，使 鏡碩2之光軸可相對在該受力方向產生一偏移角度0，而 使鏡頭2朝向被攝物，以達防手震之目的。表三為本實施 例使用電流之方向及電流大小。 15 .M345248 表三、本實施例使用電流之方向及電流大小 電流方向/安培 鏡頭向物侧移動且鏡頭光軸與中心軸 形成向下的角度1.2度 I (線圈電流） 150mA 逆時針 Ii(電磁鐵電流） 60mA逆時針 h 75mA逆時針 h 90mA逆時針 I4 75mA逆時針 更進一步，為能更快速控制，此時可由控制器37對電 磁鐵（I ) 321與電磁鐵（III) 323施以不同方向的電 流，電磁鐵（I ) 321施以逆時針方向的電流、電磁鐵 (III) 323施以順時針方向的電流；此時線圈31除受到朝 向物側（或朝向像侧）之電磁力外，也受到電磁鐵321與 電磁鐵（III) 323不同方向的電磁力’致產生不平衡的受 力作用，使鏡頭2之光軸在受力方向產生一角度0，而使 鏡頭2朝向被攝物，以達防手震快速控制之目的。表四為 使用電流之方向及電流大小。 表四、快速控制目的之電流方向及電流大小 電流方向/安培 鏡頭向物側移動且鏡頭光軸與中心軸 形成向下的角度1.2度 I 150mA 逆時針 L 90mA 逆時針 12 75mA 逆時針 Is 60mA 順時針 14 75mA 逆時針 .M345248 鏡頭移位機構(lens driving mechanism) 3 線圈（conductor coil)31 電磁鐵組（electromagnet parts)32 電磁鐵（I ) (electromagnet 1)321 電磁鐵（II ) (electromagnet 1)322 電磁鐵（III ) (electromagnet 1)323 電磁鐵（IV ) (electromagnet IV)324 導電片（electric plate)33 線圈電極（coil pad)34 電磁鐵電極(electromagnet pad)3 5 電磁鐵 I 電極(electromagnetIpad)351 電磁鐵 II 電極（electromagnet II pad)352 電磁鐵 III 電極（electromagnet III pad)3 5 3 電磁鐵IV 電極（electromagnet IV pad)354 電磁鐵心（electromagnet ferrite)36 控制器（controller)37 彈簧（spring element ) 38 永久磁鐵（permanent magnet)70Moreover, in this embodiment, the shape spring*38 is used, and the compression spring is disposed between the lens group 21 and the upper cover n. When the wire is driven by the current, the force is moved upward. The lens sleeve 22 and the lens group 21 are driven to move upward, and the compression spring is deformed as follows; when the coil 31 cuts off the current, the upward electromagnetic force disappears, and the spring is no longer pressed and returned to the original state, and the lens 2 is pushed. Revert to the original position. <Second Embodiment> A lens shifting mechanism having two electromagnets is shown in Fig. 6. The lens shifting mechanism 3 of the present embodiment is applied to an autofocus or focus lens module of a compact camera. The lens module 1 is a circular module of 8 mm x 8 mm, comprising a coil 31, an electromagnet group 32, a conductive sheet 33, a coil electrode 34, and an electromagnet electrode 35. The electromagnet group 32 is composed of The two electromagnets are composed of an electromagnet (I) 321 , an electromagnet (II ) 322 and an electromagnet ( ΪΙΙ ) 323 . The three electromagnets are evenly arranged on the periphery of the coil 31 in a 120 degree orientation and are fixed. The controller 37 outputs currents (I, I2, I3) through the electromagnet electrodes 35 to the electromagnets 32, 322, and 323 of the electromagnet group 32, and the controller 37 outputs a current I via the coil electrodes 34 and the connected conductive When the film 31 is entered into the coil 31, the coil 31 is subjected to the electromagnetic force in the upward direction (the object-side direction), and the lens sleeve 22 and the lens group 21 are moved upward (the object-side direction) along the lens center axis Z; When the controller 37 cuts off the output current, the coil 31 does not By electromagnetic force. Table 2 shows the direction and current of the current used in this embodiment. Table 2, the direction and current of the current used in this embodiment. The current amperage/direction lens moves toward the object side. The lens moves to the image side. I (coil current) 150mA counterclockwise 150mA counterclockwise 1 (electromagnet current) 100mA clockwise 100mA Hour hand h 100mA Clockwise 100mA Clockwise 13 100mA Clockwise 100mA Clockwise <Third embodiment> Lens shifting mechanism with anti-shake function Referring to Figure 2, the lens shifting mechanism 3 of the present invention can be applied. In an autofocus or focus lens module 1, and further configured to independently control the magnetic force of the electromagnet of the electromagnet group 32, such that an optical axis between the lens 2 and the central axis Z of the lens module 1 is generated. The angular offset allows the lens 2 to be opposed to the object to achieve an anti-shake function. In this embodiment, the lens shifting mechanism 3 includes: a coil 31, an electromagnet group 32, a conductive sheet 33, a coil electrode 34, and an electromagnet electrode 35; wherein, the controller of the camera (as shown in FIG. 3) The controller 37) can output currents (inflow or outflow) of different directions or different sizes into the electromagnet group 32 via the electromagnet electrode 35. In the embodiment, the electromagnet group 32 is composed of four electromagnets, including electromagnetic Four electromagnets, such as iron (I) 321 , electromagnet (II ) 322, electromagnet (III) 323, and electromagnet (IV) 324, are uniformly arranged and fixed in a 90-degree orientation. At the periphery of the coil M345248, when the controller 37 outputs electricity, current (11, 12, 13, 14) via four sets of electromagnet electrodes 35 (electromagnet 丨 electrode 351, electromagnet) electrode 352, electromagnet ΙΠ electrode 353, electromagnetic The iron IV electrode 354) enters the electromagnet (I) 321 , the electromagnet (Π ) 322 , the electromagnet and the electromagnet ( IV ) 324 ' can be generated by the electromagnet core 36 of each electromagnet 321 〜 324 by electromagnetic action The magnetic force of the N pole or the S pole, the magnitude of this magnetic force: The magnitude and direction of the current are controlled. In this embodiment, the electromagnetic forces of the four electromagnets 321 to 324 can be separately controlled, and can be controlled toward the center of the lens, or can be separately controlled so that the 8 poles of the single electromagnet are directed toward the lens. The center. The electromagnet core 36 of the electromagnets 321 to 324 used in this embodiment is made of iron-nickel alloy (permall〇yS), and the iron-recording alloy has low magnetic permeability and high electromagnetic sensitivity, and is connected to the electromagnets 321 to 324. In the case of a rapidly changing current, the electromagnetic force can be quickly reacted to facilitate independent control of the electromagnetic force of each electromagnet. As shown in FIG. 5, the electromagnet (I) 321 and the electromagnet (III) 323 are in a 180 degree orientation with respect to the opposite cloth, as shown in FIG. 5; when the user shakes the camera upward, the subject is relatively offset from the central axis of the lens. , in the direction of the sense axis, to compensate for the amount of vibration, the controller 37 can apply different currents to the electromagnet (j) and the electromagnet (III) 323, such as applying electromagnet (I) 321 Small current, a large current is applied to the electromagnet (m) 323; at this time, the coil 31 is subjected to an unbalanced force caused by different electromagnetic forces between the electromagnet (I) 321 and the electromagnet (冚) 323, so that The optical axis of the mirror 2 can generate an offset angle of 0 with respect to the direction of the force, and the lens 2 is directed toward the object for the purpose of preventing hand shake. Table 3 shows the direction and current of the current used in this embodiment. 15 .M345248 Table 3, this embodiment uses the direction of current and current magnitude The current direction / Ampere lens moves to the object side and the lens optical axis forms a downward angle with the central axis 1.2 degrees I (coil current) 150mA Counterclockwise Ii (electromagnetic Iron current) 60mA counterclockwise h 75mA counterclockwise h 90mA counterclockwise I4 75mA counterclockwise further, for faster control, the electromagnet (I) 321 and electromagnet (III) 323 can be different by controller 37 In the direction of the current, the electromagnet (I) 321 applies a counterclockwise current, and the electromagnet (III) 323 applies a clockwise current; at this time, the coil 31 receives the electromagnetic force toward the object side (or toward the image side). The electromagnetic force in the different direction of the electromagnet 321 and the electromagnet (III) 323 also causes an unbalanced force to cause the optical axis of the lens 2 to generate an angle of 0 in the direction of the force, and the lens 2 is directed toward the object. In order to achieve the purpose of rapid control of hand shake prevention. Table 4 shows the direction and current of the current used. Table 4, Current direction and current magnitude for fast control purposes Current direction / Ampere lens moves to the object side and the lens optical axis forms a downward angle with the central axis 1.2 degrees I 150mA Counterclockwise L 90mA Counterclockwise 12 75mA Counterclockwise Is 60mA Hour hand 14 75mA counterclockwise. M345248 Lens driving mechanism 3 Coil coil 31 Electromagnet parts 32 Electromagnet (I ) (electromagnet 1) 321 Electromagnet (II ) (electromagnet 1) 322 Electromagnet (III) (electromagnet 1) 323 Electromagnet (IV) (electromagnet IV) 324 Electric plate 33 Coil pad 34 Electromagnet pad 3 5 Electromagnet I electrode (electromagnet Ipad )351 Electromagnet II electrode 352 Electromagnet III electrode Electromagnet III pad 3 5 3 Electromagnet IV electrode 354 Electromagnet ferrite 36 Controller 37 Spring (spring) Element ) 38 permanent magnet 70