200525202 九、發明說明： 【發明所屬之技術領域】 本發明係關於使透鏡沿其透鏡之光軸方向移動的透鏡移 動機構、具備該透鏡移動機構之成像單元及具備該成像單 元的電子機器。 【先前技術】 一般情況，光學系是由複數片的單透鏡所構成，在將單 透鏡組入光學系的情況，將複數單透鏡固定於保持框後而 依每一保持框組入或組入複數片單透鏡。在固定單透鏡之 時’一般的方法是邊進行單透鏡之光軸軸心調整邊使其固 定於保持框，在專利文獻1記載有此種技術。 另外’在照相機等的光學機器上組裝有藉由於每一保持 框沿光軸方向使組入光學系的單透鏡移動，以進行對焦或 變焦的透鏡移動機構，而專利文獻2記載有此種技術。 [專利文獻1] 日本特開平7-20366號公報 [專利文獻2] 日本特開平11-133280號公報 但是，在進行光軸軸心調整時，利用朝光軸方向對單透 鏡賦以勢能，調整單透鏡的光軸軸心以使單透鏡的光軸與 感光膠片、成像元件等成爲垂直狀，但若具備如習知般的 透鏡移動機構，則單透鏡將因勢能作用力的影響而發生朝 光軸方向的移動。爲此，便有無法調整單透鏡的光軸軸心 以使其相對於感光膠片、成像元件等成爲垂直的擔憂。 200525202 【發明內容】 本發明之透鏡移動機構，其特徵爲：具備使支持保持透 鏡之保持框，以沿著上述透鏡之光軸方向能自由移動地加 以支持的導引部；朝著上述透鏡之光軸方向的一方對上述 保持框賦以勢能的賦勢部；及設置可使上述保持框沿光軸 方向移動之活動自如的操縱桿；其中，相對垂直於上述透 鏡光軸的面呈傾斜的凸輪面係形成於上述操縱桿及上述保 持框中之一的構件上，上述操縱桿及上述保持框中的另一 構件係以與上述賦勢部的勢能作用力逆向的狀態頂接於上 述凸輪面。 【實施方式】 以下，參照圖式說明本發明之較佳實施形態。 [第1實施形態] 第1圖爲組裝有本發明之透鏡移動機構所適用之實施形 態之作爲對焦機構的透鏡移動機構1 〇的成像單元1的側視 圖，第2圖爲成像單元1的俯視圖。 該成像單元1具備：由複數片單透鏡所構成的透鏡單元 2 ;由透鏡單元2近形成像的固體成像元件3 ;使透鏡單元 2沿光軸移動用的透鏡移動機構1 〇 ;及組裝有透鏡單元2、 固體成像元件3及透鏡移動機構1 〇之作爲固定鏡筒的殼體. 7。另外，透鏡移動機構1 〇具備：支持透鏡單元2以使該 透鏡單元2可接近或離開固體成像元件3之作爲導引部的 導軌4 ;賦以勢能以使透鏡單元2可接近固體成像元件3之 作爲賦勢部的彈簧5 ;及以對抗該彈簧5的勢能作用力的方 200525202 式頂接於透鏡單元2之操縱桿構件6。在此，第1圖中，圖 示殻體7的剖面，以便容易明白殻體7的內側。 殻體7係呈現爲一箱狀體，在殻體7的上面以貫穿其上 面的方式形成有圓形狀的開口部7 a。在殻體7的內側且在 其底面，直線狀的導軌4係設爲立起狀態，該導軌4的一 端部係固定於殻體7的底面，導軌4的另一端部係固定於 殼體7的上面。 在殻體7的內側底面安裝有固體成像元件3，該固體成 像元件3的受光面指向開口部7a。固體成像元件3係將進 行對應受光量的電信號變換的光電二極體、光電晶體等的 光電變換元件作爲畫素沿其受光面排列爲2維陣列狀者（例 如，矩陣狀或蜂窩狀）。固體成像元件3可爲具備CCD的CCD 型固體成像元件，CCD係將由光電變換元件作光電變換的 電信號進行電荷傳輸，也可爲具備放大器的CMOS型固體 成像元件，放大器係將由光電變換元件作光電變換的電信 號進行放大。又，導軌4係與固體成像元件3的受光面形 成爲實質上垂直狀。 透鏡單元2具備：最接近於物體（被攝體）側的第1單透 鏡2a ;其次接近於物體側的第2單透鏡2b ;最接近於固體 成像元件3的第3單透鏡2c ;及保持此等單透鏡2a、2b、 2c之作爲移動鏡筒的保持框2d。 保持框2d係將小徑的小圓筒部與大徑的大圓筒部設爲同 心且將小圓筒部一體形成於大圓筒部的端部。在保持框2d 的內周面固定有單透鏡2a、2b、2c的外周緣，此等單透鏡 200525202 2a、2b、2c被作軸心調整後固定於保持框2(1，具體而言， 單透鏡2a、2b、2c的任一光軸均與保持框2d的中心線形 成爲一致。又，在保持框2 d的內側還可設置具有規定此等 單透鏡2a ' 2b、2c全體的焦距編號的開口部的光圈板。 在保持框2d的外周面設有延出部2e，其與保持框2d形 成爲一體，該延出部2e係相對保持框2d的中心線垂直延 長。在從延出部2e的基端至突端間的中間部，形成有與保 持框2d的中心軸呈平行的貫穿孔2f。在該貫穿孔2f內可 滑動自如地插入上述導軌4，藉此，透鏡單元2全體係由導 0 軌4所導引而相對固體成像元件3形成爲可接近或分離自 如。 導軌4的橫剖面形狀係形成爲其從剖面重心至剖面外輪 廓周緣的一點的距離與從剖面重心至剖面外輪廓周緣的另 一點的距離各異的形狀（例如，多角形狀、非圓形狀）。貫 穿孔2f的開口形狀與該導軌4的橫剖面形狀實質上形成爲 一致’透鏡單元2係形成爲不以導軌4的橫剖面重心爲中 心進行旋轉的構成。 鲁 在由導軌4支持透鏡單元2的狀態中，單透鏡2a、2b、 2c的光軸係於固體成像元件3的受光面的中心實質上與其 受光面形成爲垂直，並從固體成像元件3開始順序排列第3 單透鏡單元2透鏡2c、第2單透鏡2b及第1單透鏡2a。 在透鏡單元2的可移動範圍中透鏡單元2最接近於固體 成像元件3的位置，此等單透鏡2a、2b、2c全體係將與透 鏡單元2分離的指定物體面的像成像於固體成像元件3，但 200525202 單透鏡2a、：2b、2c全體係形成爲全焦距狀態（參照第1B圖） 。另一方面，在透鏡單元2的可移動範圍中透鏡單元2最 離開固體成像元件3的位置，此等單透鏡2a、2b、2c全體 的被攝場域深度係形成爲較全焦距狀態的情況淺，但單透 鏡2a、2b、2c全體係將較上述指定物體面靠近透鏡單元2 的物體面的像成像於固體成像元件3，而單透鏡2a、2b、2c 全體的被攝場域深度的範圍係形成爲較全焦距狀態靠近固 體成像元件3側（參照第1 A圖）。以下之說明中，稱透鏡 單元2之可移動範圍中最靠近固體成像元件3的位置爲通 常攝影位置，而稱透鏡單元2之可移動範圍中最離開固體 成像元件3的位置爲近接攝影位置。 彈簧5的一端部係在從延出部2 e的貫穿孔2 f至延出部 2e的突端間連結於延出部2e，彈簧5的另一端部係連結於 殼體7的底面。該彈簧5係以保持框2 d接近於固體成像 元件3的方式，並介由延出部2e而對保持框2d賦以勢能 者。另外，在透鏡單元2位於通常攝影位置的情況，彈簧5 係處於較自然長度速要伸長的狀態，並以經常使透鏡單元2 接近於固體成像元件3的方式賦以勢能。 操縱桿構件6係配設於較延出部2e還要靠近彈簧5的勢 能賦予方向側，且從殼體7的內側延長伸出至殻體7的外 側。從處於該殼體7的內側的操縱桿構件6的一端至處於 該殻體7的外側的操縱桿構件6的另一端間的中間部，係 在較延出部2e的突端還要於延出部2e的延出方向延長的 位置被支持於殼體7上，且形成爲繞平行於單透鏡2a、2b 200525202 、2 c的光軸的軸心而可旋轉自如狀。 處於該殼體7的內側的操縱桿構件6的一端上形成有凸 輪面6a。第3圖爲顯示從操縱桿構件6的旋轉半徑方向所 見操縱桿構件6的一端的圖面，凸輪面6a係在朝延出部2e 的延出方向（亦即，操縱桿構件6的長度方向）所見的情況 相對於操縱桿構件6的旋轉面傾斜。亦即，該凸輪面6a之 在第2圖之操縱桿構件6的旋轉圓周方向之逆時針旋轉側 ，相對操縱桿構件6的旋轉面形成爲增高，而於旋轉圓周 方向之順時針旋轉側，相對操縱桿構件6的旋轉面形成爲 大致等高。又，操縱桿構件6的旋轉軸心與單透鏡2a、2b 、2c的光軸成爲平行，因此操縱桿構件6的旋轉面與單透 鏡2a、2b、2c的光軸成爲垂直。 如第1圖〜第3圖所示，上述延出部2e的突端部頂接於 該凸輪面6a，由該凸輪面6a承受彈簧5的勢能作用力，且 以對抗彈簧5的勢能作用力的方式而由該凸輪面6a支持上 述延出部2e的突端部。 另外，操縱桿構件6的可旋轉範圍，係藉由未圖示的限 制機構（例如，可頂接於操縱桿構件6的止動部），制約於 從延出部2 e頂接於操縱桿構件6的旋轉圓周方向之逆時針 旋轉側的凸輪面6a端部的第1部位處，至延出部2e頂接 於旋轉圓周方向之順時針旋轉側的凸輪面6a端部的第2部 位處內。 其次，說明如上述般構成的成像單元1的使用方法及成 像單元1的作用。 -10- 200525202 首先’當使用者按逆時針方向旋轉操縱桿構件6時，延 出部2e依靠彈簧5的勢能作用力，以頂接於凸輪面6a的 狀態沿著該凸輪面6a並相對凸輪面6a滑動，透鏡單元2 則伴隨此動作朝靠近固體成像元件3的方向移動。然後， 如第3圖中二點虛線所示，延出部2e與凸輪面6a的頂接 位置成爲操縱桿構件6的旋轉圓周方向之順時針旋轉側的 最低的第2部位處，於是如第1 B圖所示，透鏡單元2位於 通常攝影位置。即使透鏡單元2位於通常攝影位置，彈簧5 仍爲較自然長度伸長的狀態，由彈簧5朝讓透鏡單元2接 近固體成像元件3的方向賦以勢能，但因爲延出部2e以對 抗該勢能作用力的方式頂接於凸輪面6 a上，因此透鏡單元 2之移動仍受到抑制。 在此，係由彈簧5對透鏡單元2賦以勢能的狀態，且由 凸輪面6a承受該勢能作用力，因此，透鏡單元2之光軸係 在固體成像元件3的受光面的中心以與該受光面垂直的方 式被進行光軸軸心的調整，在此基礎上，透鏡單元2不會 晃動。另外，因爲由彈簧5朝固體成像元件3側牽拉透鏡 單元2，因此透鏡單元2不會朝離開固體成像元件3的方向 移動。 另一方面，當使用者按順時針方向旋轉操縱桿構件6時 ，延出部2e依靠彈簧5的勢能作用力，以頂接於凸輪面6a 的狀態沿著該凸輪面6a並相對凸輪面6a滑動，透鏡單元2 則伴隨此動作朝對抗彈簧5的勢能作用力而離開固體成像 元件3的方向移動。然後，如第3圖中實線所示，延出部2e -11- 200525202 與凸輪面6 a的頂接位置成爲操縱桿構件6的旋轉圓周方向 之逆時針旋轉側的最高的第1部位處，於是如第1 A圖所示 ，透鏡單元2位於近接攝影位置。即使透鏡單元2位於近 接攝影位置，仍由彈簧5朝讓透鏡單元2接近固體成像元 件3的方向賦以勢能，但因爲延出部2e以對抗該勢能作用 力的方式頂接於凸輪面6a上，因此透鏡單元2之移動仍受 到抑制。在此，係由凸輪面6a承受該勢能作用力，因此透 鏡單元2之光軸係在固體成像元件3的受光面的中心以與 該受光面垂直的方式被進行光軸軸心的調整，在此基礎上 ，透鏡單元2不會晃動。 如上述，本實施形態中，彈簧5的勢能作用力經常作用 於保持框2d，且凸輪面6a以對抗彈簧5的勢能作用力的方 式經常頂接於延出部2e，因此透鏡單元2不會晃動，透鏡 單元2之光軸在固體成像元件3的受光面的中心以與該受 光面垂直的方式進行光軸軸心的調整。另外，該成像單元1 係組入有透鏡單元2、透鏡移動機構1 〇及固體成像元件3 者，因此該成像單元1作爲在成像之同時還可攝影的裝置 ，可設計爲較小型。另外，在成像單元1之製造時，在對 單透鏡2a、2b、2c進行光軸軸心的調整時，雖將單透鏡2a 、2b、2c壓向固體成像元件3，但因爲該按壓時的荷重由 凸輪面6a所承受，因此保持框2d不會晃動。 [第2實施形態] 在上述第1實施形態中，透鏡單元2的可移動範圍係在 通常攝影位置至近接攝影位置間，而第2實施形態中，如 -12- 200525202 第4圖所示，透鏡單元2的可移動範圍可較第1實施形態 的情況擴至更爲廣範圍的固體成像元件3側。在此，第4 圖爲顯示第2實施形態之成像單元1 〇 1的局部剖開的側視 圖。以下，參照第4圖說明成像單元1 0 1，在成像單元1 〇 1 中，對與第1實施形態之成像單元1的任一部分相同的部 分則賦予相同的元件符號，並省略相同部分的相關說明。 如第4圖 A所示，在透鏡單元2最爲離開固體成像元件 3的情況，與第1實施形態的情況相同成爲近接攝影位置， 如第4圖 C所示，在透鏡單元2最爲接近固體成像元件3 的情況，單透鏡2a、2b、2c全體的物體面變得無限遠之同 時，單透鏡2a、2b、2c全體的成像面則成爲固體成像元件 3的受光面。亦即，在透鏡單元2最爲接近固體成像元件3 的情況，從單透鏡2a、2b、2c全體的像側主面至固體成像 元件3的受光面的距離，與單透鏡2a、2b、2c全體的像側 焦點距離大致一致。又，第2實施形態中，稱透鏡單元2 之可移動範圍中最爲接近固體成像元件3的位置爲無限遠 攝影位置。另外，即使設定透鏡單元2係位於無限遠攝影 位置處者，彈簧5仍爲較自然長度還要伸長的狀態，彈簧5 的勢能作用力朝使透鏡單元2接近於固體成像元件3的方 向進行作用。 另外，如第4B圖所示，在透鏡單元2位於從無限遠攝影 位置至近接攝影位置間的指定位置的情況，與第1實施形 態的情況相同成爲通常攝影位置，單透鏡2a、2b、2c全體 成爲全焦距狀態。 -13- 200525202 另外，伴隨著透鏡單元2的可移動範圍較第1實施形態 的情況擴至更爲廣範圍的固體成像元件3側，操縱桿構件6 的可旋轉範圍也較第1實施形態的情況擴至周方向的更廣 範圍，同時，凸輪面6 a的範圍也擴至周方向的更廣範圍。 說明第2實施形態的成像單元1 〇 1的作用及使用方法， 使操縱桿構件6沿順時針方向旋轉，如第5圖之實線所示 ，延出部2e與凸輪面6a的頂接位置，係成爲操縱桿構件6 的旋轉圓周方向之逆時針旋轉側的最高部位處，透鏡單元2 位於近接攝影位置。 馨 於是，當使用者按逆時針方向旋轉操縱桿構件6時，如 第5圖之一點虛線所示，延出部2e與凸輪面6a的頂接位 置成爲最高部位及最低部位間的指定位置，透鏡單元2位 於通常攝影位置。 當使用者進一步按逆時針方向旋轉操縱桿構件6時，如 第5圖之二點虛線所示，延出部2e與凸輪面6a的頂接位 置成爲最低部位，透鏡單元2位於無限遠攝影位置。 無論透鏡單元2位於近接攝影位置、通常攝影位置、無 ® 限遠攝影位置的任一位置，均由彈簧5朝讓透鏡單元2接 近固體成像元件3的方向賦以勢能，同時，延出部2e以對 抗該勢能作用力的方式頂接於凸輪面6a上，因此透鏡單元 2不會晃動，且透鏡單元2之光軸係在固體成像元件3的受 光面的中心以與該受光面垂直的方式進行光軸軸心的調整 。另外，在成像單元1 0 1之製造時的軸心調整步驟中，雖 將單透鏡2a、2b、2c壓向固體成像元件3，但因爲該按壓 -14- 200525202 時的荷重由凸輪面6a所承受，因此保持框2d不會晃動。 [第3實施形態] 在上述第1實施形態中，彈簧5係以讓透鏡單元2接近 於固體成像元件3的方式賦以勢能，且以配置於較延出部2 e 靠近固體成像元件3側的狀態使凸輪面6a頂接於延出部2e 。相對於此，第3實施形態中，如第6圖所示，彈簧5係 以讓透鏡單元2離開固體成像元件3的方式賦以勢能，旦 以配置於較延出部2e離開固體成像元件3側的狀態使操縱 桿構件6的凸輪面6 a頂接於延出部2 e。以下，參照第6圖 說明第3實施形態之成像單元1 5 1，在成像單元1 5 1中，對 與第1實施形態之成像單元1的任一部分相同的部分則賦 予相同的元件符號，並省略相同部分的相關說明。 第3實施形態之成像單元1 5 1中，彈簧5的一端部並非 連結於延出部2e，而是於第2延出部2g連結於其突端部。 彈簧5的另一端部係於殼體7的內側連結於殼體7的上面 。第2延出部2g係設爲與保持框2d成爲一體，第2延出 部2g係配設於較延出部2e靠近固體成像元件3側。彈簧5 係以讓透鏡單元2離開固體成像元件3的方式，並介由第2 延出部2g而對保持框2d賦以勢能者。 另外，延出部2e不頂接於凸輪面6a，而是由延出部2e 中形成於與固體成像元件3側相反側的面上的突部2j頂接 於凸輪面6a。在此，從凸輪面6a至處於殼體7外側的操縱 桿構件6的另一端間的操縱桿構件6的中間部，係支持於 導軌4的上端，而形成爲可繞平行於單透鏡2a、2b、2c的 -15- 200525202 光軸的軸心轉動自如。另外，凸輪面6a在順時針旋轉側變 低，而於逆時針旋轉側變高。 在殼體7的內側底面，第2導軌1 1係設成立起的狀態， 第2導軌的一端部係固定於殼體7的底面，而第2導軌的 另一端部係固定於殻體7的上面。第2導軌1 1係在與導軌 4平行的狀態配置在與導軌4不同的位置處。而且在保持框 2d的外周面安裝有導引支承2h，該導引支承2h係支持於 第2導軌1 1上。導引支承2h係設爲相對於第2導軌1 1可 自由滑行。藉由導軌4、1 1，設置透鏡單元2成爲可沿著導 軌4、11而於透鏡單元2的光軸方向移動。 另外，固體成像元件3並非固定於殼體7的內側底面， 而是固定於殼體7的外側下面。而且，於殼體7的下面形 成從殻體7的內側貫穿至外側的開口部7d，固體成像元件 3與該開口部7d相對向。透鏡單元2的光軸係通過該開口 部，且固體成像元件3的受光面與透鏡單元2的光軸垂 直。 以下，說明成像單元1 5 1的作用。當使用者按逆時針方 向旋轉操縱桿構件6時，延出部2e之突部2j依靠彈簧5 的勢能作用力，以頂接於凸輪面6a的狀態沿著該凸輪面6a 並相對凸輪面6a滑動，透鏡單元2則伴隨此動作從固體成 像元件3離開。然後，延出部2e之突部2j與凸輪面6a的 頂接位置成爲操縱桿構件6的旋轉圓周方向之順時針旋轉 側的最低的第2部位處，如第6A圖所示，透鏡單元2位於 近接攝影位置。即使透鏡單元2位於近接攝影位置，彈簧5 -1 6 - 200525202 仍爲較自然長度伸長的狀態，由彈簧5朝讓透鏡單元2離 開固體成像元件3的方向賦以勢能，但因爲延出部2 e以對 抗該勢能作用力的方式頂接於凸輪面6 a上，因此透鏡單元 2之移動仍受到抑制。 另一方面，當使用者按順時針方向旋轉操縱桿構件6時 ，延出部2e之突部2j依靠彈簧5的勢能作用力，以頂接 於凸輪面6a的狀態沿著該凸輪面6a並相對凸輪面6a滑動 ，透鏡單元2則伴隨此動作朝對抗彈簧5的勢能作用力而 接近固體成像元件3的方向移動。然後，延出部2e之突部 2j與凸輪面6a的頂接位置成爲操縱桿構件6的旋轉圓周方 向之逆時針旋轉側的最高的第1部位處，於是如第6B圖所 示，透鏡單元2位於通常攝影位置。即使透鏡單元2位於 通常攝影位置，仍由彈簧5朝讓透鏡單元2離開固體成像 元件3的方向賦以勢能，但因爲延出部2e以對抗該勢能作 用力的方式頂接於凸輪面6a上，因此透鏡單元2之移動仍 受到抑制。 第3實施形態中，因爲由凸輪面6a承受彈簧5的勢能作 用力，因此，透鏡單元2之光軸係在固體成像元件3的受 光面的中心以與該受光面垂直的方式進行光軸軸心的調整 ，在此基礎上，透鏡單元2不會晃動。另外，在成像單元151 之製造時，雖在藉由吸引機等朝從固體成像元件3離開的 方向吸引透鏡單元2的狀態，使透鏡單元2位於通常攝影 位置，藉由調整固體成像元件3的安裝位置，以進行透鏡 單元2的軸心調整及焦點調整，但該吸引時的荷重由凸輪 -17- 200525202 面6 a所承受，因此保持框2 d不會晃動。 [應用例] 若將如上述的成像單元1、1 0 1、1 5 1組裝於筆記型電腦 、行動電話、行動終端、電子辭典裝置、PDA (個人數位助 理）、電子記事簿裝置、數位相機、印表機及其他的電子機 器上，便可提供附有照相功能的電子機器。 例如，第7圖爲顯示組裝有成像單元1、成像單元1 〇 1 或成像單元1 5 1中之任一者的行動電話2 0 1的前視圖。該 行動電話201係介由鉸鏈204而將下框體20 3可轉動地連 結於上框體202上的摺疊式行動電話。該上框體202上還 內建有成像單元1、成像單元1〇1或成像單元151，透鏡單 元2係面對著形成於上框體202上的開口窗。另外，操縱 桿構件6的前端部係從上框體202突出於外側，並可由使 用者操作該操縱桿構件6。另外，在上框體202、下框體203 等設有快門鍵，當使用者按下快門鍵時，固體成像元件3 即開始作動，並由該固體成像元件3取得影像。 第8圖爲顯示組裝有成像單元1、成像單元101或成像 單元1 5 1中之任一者之數位相機3 0 1的立體圖。該數位相 機301的框體3 02上內建有成像單元1、成像單元101或成 像單元1 5 1，透鏡單元2係面對著形成於框體302上的開口 窗。另外，操縱桿構件6的前端部係從框體3 02突出於外 側。另外，在框體3 02的上面設有導通-截止數位相機301 的電源用的電源開關3 0 3及於數位相機301進行成像動作 用的快門鍵3〇4，當使用者利用電源開關3 03，以導通數位 200525202 相機3 01的狀態按下快門鍵3 〇4時，固體成像元件3即開 始作動，並取得影像。另外，在框體3 0 2的正面設有閃光 器3 0 5及取景器3 06。 又’本發明並不侷限於上述各實施形態、各應用例，只 要在未超出本發明之實質範圍內，即可進行各種的改良及 設計變更。 上述各實施形態中，透鏡移動機構1 0係通過使單透鏡2a 、2b、2c全體沿光軸方向移動以進行對焦。相對於此，藉 由使單透鏡2a、2b、2c中的任〜透鏡固定，而使其他的透 鏡沿光軸方向移動，也可以作爲使單透鏡2a、2b、2c全體 的焦點距離變化的對焦機構。例如，可將單透鏡2a從保持 框2d獨立而固定於殻體7上，將單透鏡2b、2c固定於保 持框2d上，支持保持框2d使其可與單透鏡2b、2c —起沿 光軸方向自由移動於導軌4上。該情況，也與上述實施形 態之情況相同，保持框2d係由彈簧5而賦以勢能作用，凸 輪面6a以對抗彈簧5的勢能作用力的方式頂接於延出部2e ，因此，單透鏡2b、2c之光軸係在固體成像元件3及單透 鏡2a的兩方進行光軸軸心的調整。在該情況，單透鏡2a 成爲第1透鏡群，而單透鏡2b、2c成爲第2透鏡群，但即 使在二群以上的情況，只要使透鏡群沿光軸方向移動，當 勸仍可將本發明之透鏡移動機構應用於欲移動的透鏡群。 另外，上述實施形態中，凸輪面6a係形成於操縱桿構件 6上，但也可將相對垂直於單透鏡2a、2b、2c的光軸的面 呈傾斜的凸輪面形成於保持框2 d(包含延出部2e)上。該情 200525202 況’以操縱桿構件6的突端對抗彈簧5的勢能作用力的方 式頂接於保持框2 d的凸輪面’只要旋轉操縱桿構件6便 可使透鏡單元2沿光軸方向移動。 另外，上述實施形態中，彈簧5爲拉伸彈簧，也可取代 彈簧5而設置壓迫使透鏡單元2接近於固體成像單元3的 壓縮彈簧（第1實施形態、第2實施形態的情況），也可取 代彈簧5而設置壓迫使透鏡單元2從固體成像單元離開的 壓縮彈簧（第3實施形態的情況）。在第1實施形態及第2 實施形態中應用壓縮彈簧的情況，將壓縮彈簧的一端部連 結於延出部2e，將壓縮彈簧的另一端部連結於殼體7的上 面，即使透鏡單元2係位於通常攝影位置者，壓縮彈簧仍 舊處於較自然長度壓縮的狀態。在第3實施形態中應用壓 縮彈簧的情況，將壓縮彈簧的一端部連結於第2延出部， 將壓縮彈簧的另一端部連結於彈簧5的底面，即使透鏡單 元2係位於近接攝影位置者，壓縮彈簧仍舊處於較自然長 度壓縮的狀態。 另外，上述實施形態中，例舉彈簧5作爲朝光軸方向對 透鏡單元2賦以勢能者，但並不侷限於彈簧5，也可爲其他 的可彈性變形的彈性構件。 另外，上述實施形態中，彈簧5係連結於延出部2e，但 也可在較導軌4靠近保持框2d側連結於保持框2d或延出 部2e。 另外，上述實施形態中，利用轉動操縱桿構件6，使延 出部2e可相對凸輪面6a作相對的滑動，而使透鏡單元2 -20- 200525202 沿光軸方向移動。相對於此，也可利用使操縱桿構件6於 垂直於第1圖或第2圖的紙面的方向滑行，以使延出部2 e 可相對凸輪面6a作相對的滑動，而使透鏡單元2沿光軸方 向移動。除此之外，若操縱桿構件6可活動自如，藉由朝 可活動的方向移動操縱桿構件6，使延出部2e可相對凸輪 面6a作相對的滑動，而使透鏡單元2沿光軸方向移動，則 操縱桿構件6的可活動方向、凸輪面6a的形狀並無特別的 限定。但是，若藉由凸輪面6a與延出部2e的相對滑動而 使透鏡單元2沿光軸方向移動，則凸輪面6a至少需相對透 鏡單元2的光軸呈現傾斜狀。任一情況均使凸輪面6a以對 抗彈簧5的勢能作用力的方式頂接於延出部2e。 【圖式簡單說明】 第1 A圖爲顯示近接攝影狀態之成像單元1的側視圖。 第1 B圖爲顯示通常攝影狀態之成像單元1的側視圖。 第2圖爲顯示第1圖所示成像單元1的俯視圖。 第3圖爲顯示第1圖所示成像單兀1所具備的操縱桿構 件6的圖面。 第4 A圖爲顯示近接攝影狀態之另一成像單元1 0 1的側視 圖。 第4 B圖爲顯示通常攝影狀態之成像單元1 0 1的側視圖。 第4C圖爲顯示無限遠攝影狀態之成像單元1 〇 1的側視圖 〇 第5圖爲顯示第4圖所示成像單元1 0 1所具備的操縱桿 構件6的圖面。 -21- 200525202 第6 A圖爲顯示近接攝影狀態之成像單元1 5 1的側視圖。 第6 B圖爲顯示通常攝影狀態之另一成像單兀1 5 1的側視 圖。 成像單元1 0 1或成像 成像單元1 0 1或成像200525202 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a lens moving mechanism that moves a lens along the optical axis direction of its lens, an imaging unit provided with the lens moving mechanism, and an electronic device provided with the imaging unit. [Prior art] Generally, the optical system is composed of a plurality of single lenses. When a single lens is incorporated into the optical system, a plurality of single lenses are fixed to a holding frame and then grouped or grouped into each holding frame. Multiple single lenses. When a single lens is fixed, a common method is to fix the single lens to the holding frame while adjusting the optical axis axis of the single lens. Patent Document 1 describes such a technique. In addition, a lens moving mechanism for focusing or zooming is mounted on an optical device such as a camera by moving a single lens incorporated in the optical system along each optical frame in the direction of the optical axis, and Patent Document 2 describes such a technology . [Patent Document 1] Japanese Patent Application Laid-Open No. 7-20366 [Patent Document 2] Japanese Patent Application Laid-Open No. 11-133280 However, when the optical axis is adjusted, the single lens is given potential energy toward the optical axis and adjusted. The optical axis axis of a single lens is to make the optical axis of the single lens perpendicular to the photosensitive film, imaging element, etc. However, if a conventional lens movement mechanism is provided, the single lens will be affected by the influence of potential energy. Movement in the direction of the optical axis. For this reason, there is a concern that the optical axis axis of a single lens cannot be adjusted so as to be perpendicular to a photosensitive film, an imaging element, or the like. 200525202 [Summary of the invention] The lens moving mechanism of the present invention is characterized in that it includes a guide portion that enables a holding frame that supports the lens to be supported to move freely along the direction of the optical axis of the lens; One side in the direction of the optical axis imparts potential energy to the holding frame; and a movable joystick is provided to move the holding frame in the direction of the optical axis. Among them, the surface inclined to the surface perpendicular to the optical axis of the lens is inclined. The cam surface is formed on one of the joystick and one of the holding frames, and the other member of the joystick and the holding frame is in abutment with the cam in a state reverse to the potential energy of the energizing portion. surface. [Embodiment] Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. [First Embodiment] FIG. 1 is a side view of an imaging unit 1 incorporating a lens moving mechanism 10 as a focusing mechanism in an embodiment to which the lens moving mechanism of the present invention is applied, and FIG. 2 is a plan view of the imaging unit 1. . This imaging unit 1 includes: a lens unit 2 composed of a plurality of single lenses; a solid-state imaging element 3 forming an image near the lens unit 2; a lens moving mechanism 1 for moving the lens unit 2 along the optical axis; and an assembly unit 7. The lens unit 2, the solid-state imaging element 3, and the lens moving mechanism 1 〇 serve as the housing of the fixed lens barrel. 7. In addition, the lens moving mechanism 10 includes: a lens unit 2 that supports the lens unit 2 so that the lens unit 2 can approach or leave the guide rail 4 as a guide portion of the solid-state imaging element 3; and a potential energy that enables the lens unit 2 to approach the solid-state imaging element 3 It is a spring 5 as an energizing portion; and a square 200525202 is pressed against the joystick member 6 of the lens unit 2 in a way that acts against the potential energy of the spring 5. Here, the cross section of the case 7 is shown in FIG. 1 so that the inside of the case 7 can be easily understood. The casing 7 is a box-shaped body, and a circular opening 7a is formed on the upper surface of the casing 7 so as to penetrate the upper surface. On the inner side of the housing 7 and on the bottom surface thereof, a linear guide rail 4 is set up. One end of the guide rail 4 is fixed to the bottom surface of the housing 7, and the other end of the guide rail 4 is fixed to the housing 7. Above. A solid-state imaging element 3 is mounted on the inner bottom surface of the housing 7, and the light-receiving surface of the solid-state imaging element 3 faces the opening 7a. The solid-state imaging element 3 uses photoelectric conversion elements such as photoelectric diodes, photoelectric crystals, and the like that perform electrical signal conversion corresponding to the amount of received light as pixels arranged in a two-dimensional array (eg, matrix or honeycomb) along its light-receiving surface. . The solid-state imaging element 3 may be a CCD-type solid-state imaging element provided with a CCD. The CCD is a CMOS-type solid-state imaging element provided with a photoelectric conversion element for charge transfer. The amplifier system may be a photoelectric conversion element. The photoelectrically converted electrical signal is amplified. The guide rail 4 is substantially perpendicular to the light-receiving surface of the solid-state imaging element 3. The lens unit 2 includes a first single lens 2a closest to the object (subject) side, a second single lens 2b second closest to the object side, a third single lens 2c closest to the solid-state imaging element 3, and holding These single lenses 2a, 2b, and 2c serve as a holding frame 2d for moving the lens barrel. The holding frame 2d is formed by concentrically forming a small-diameter small cylindrical portion and a large-diameter large cylindrical portion, and integrally forming the small cylindrical portion at an end portion of the large cylindrical portion. The outer peripheral edges of the single lenses 2a, 2b, and 2c are fixed to the inner peripheral surface of the holding frame 2d. These single lenses 200525202 2a, 2b, and 2c are fixed to the holding frame 2 (1, specifically, Any of the optical axes of the lenses 2a, 2b, and 2c is formed to coincide with the center line of the holding frame 2d. Further, an opening having a focal length number defining the entirety of these single lenses 2a '2b, 2c may be provided inside the holding frame 2d. An extension plate is provided on the outer peripheral surface of the holding frame 2d, which is integrally formed with the holding frame 2d, and the extending portion 2e extends vertically from the center line of the holding frame 2d. A middle portion between the base end and the protruding end is formed with a through-hole 2f that is parallel to the central axis of the holding frame 2d. The through-hole 2f is slidably inserted into the above-mentioned guide rail 4, whereby the entire system of the lens unit 2 is guided. The 0 rail 4 is guided to be relatively close to or detachable from the solid imaging element 3. The cross-sectional shape of the guide rail 4 is formed from the distance from the center of gravity of the section to a point on the periphery of the outer contour of the section and from the center of the section to the outer contour of the section. The shape of the other point on the perimeter varies in distance (For example, a polygonal shape or a non-circular shape.) The opening shape of the through hole 2f is substantially the same as the cross-sectional shape of the guide rail 4. The lens unit 2 is formed so as not to rotate around the center of gravity of the cross-section of the guide rail 4. In the state where the lens unit 2 is supported by the guide rail 4, the optical axis of the single lens 2a, 2b, 2c is substantially perpendicular to the center of the light-receiving surface of the solid-state imaging element 3, and is formed from the solid-state imaging element. The 3 single lens unit 2 lens 2c, the second single lens 2b, and the first single lens 2a are arranged in order from 3. The lens unit 2 is closest to the solid imaging element 3 in the movable range of the lens unit 2. The entire system of lenses 2a, 2b, and 2c images the image of a specified object surface separated from the lens unit 2 on the solid-state imaging element 3. However, the entire system of 200525202 single lens 2a, 2b, and 2c is formed in a full focal length state (see Figure 1B) On the other hand, in the movable range of the lens unit 2, the position of the lens unit 2 farthest from the solid-state imaging element 3, the overall depth of field of these single lenses 2a, 2b, and 2c is formed at a relatively full focal length. The situation is shallow, but the entire system of single lens 2a, 2b, 2c images the image of the object surface closer to the lens unit 2 than the specified object surface on the solid imaging element 3, and the entire field of the single lens 2a, 2b, 2c The range of the depth of field is formed closer to the solid imaging element 3 side than the full focal length state (refer to FIG. 1A). In the following description, the position closest to the solid imaging element 3 in the movable range of the lens unit 2 is referred to as normal photography Position, which is called the position closest to the solid-state imaging element 3 in the movable range of the lens unit 2. The one end portion of the spring 5 is located from the through hole 2f of the extension portion 2e to the protruding end of the extension portion 2e. It is connected to the extension part 2e, and the other end part of the spring 5 is connected to the bottom surface of the case 7. As shown in FIG. This spring 5 is such that the holding frame 2d is close to the solid-state imaging element 3, and a potential energy is applied to the holding frame 2d via the extension portion 2e. In addition, when the lens unit 2 is located at a normal photographing position, the spring 5 is in a state of being stretched faster than its natural length, and is given potential energy so that the lens unit 2 is often close to the solid-state imaging element 3. The joystick member 6 is disposed closer to the potential imparting direction side of the spring 5 than the extension portion 2e, and extends from the inside of the case 7 to the outside of the case 7. The middle portion from one end of the joystick member 6 on the inner side of the housing 7 to the other end of the joystick member 6 on the outer side of the housing 7 is extended more than the protruding end of the extension portion 2e. The position where the extending direction of the portion 2e is extended is supported on the housing 7 and is formed so as to be rotatable around the axis of the optical axis parallel to the single lenses 2a, 2b 200525202, 2c. A cam surface 6a is formed on one end of the joystick member 6 located inside the housing 7. FIG. 3 is a view showing one end of the joystick member 6 as viewed from the direction of the radius of rotation of the joystick member 6. The cam surface 6a is in the extension direction of the extension portion 2e (that is, the length direction of the joystick member 6). ) The situation seen is inclined with respect to the rotation surface of the joystick member 6. That is, the side of the cam surface 6a counterclockwise in the rotation circumferential direction of the joystick member 6 in FIG. 2 is formed to be increased relative to the rotation surface of the joystick member 6 and is clockwise rotated in the rotation circumferential direction. The rotation surface with respect to the joystick member 6 is formed to be approximately the same height. The axis of rotation of the joystick member 6 is parallel to the optical axis of the single lenses 2a, 2b, and 2c. Therefore, the rotation surface of the joystick member 6 is perpendicular to the optical axis of the single lenses 2a, 2b, and 2c. As shown in Figs. 1 to 3, the protruding end portion of the extending portion 2e abuts on the cam surface 6a, and the cam surface 6a receives the potential energy force of the spring 5 and resists the potential energy force of the spring 5. By way of example, the cam surface 6a supports the protruding end portion of the extended portion 2e. In addition, the rotatable range of the joystick member 6 is restricted by a restriction mechanism (not shown) (for example, a stopper portion that can be abutted to the joystick member 6) to be restricted from abutting on the joystick from the extension portion 2e. The first portion of the end of the cam surface 6a on the counterclockwise rotation side of the rotation circumferential direction of the member 6 is at the second portion of the end portion of the cam surface 6a on the clockwise rotation side of the rotation circumferential direction. Inside. Next, a method of using the imaging unit 1 configured as described above and an operation of the imaging unit 1 will be described. -10- 200525202 First, when the user rotates the joystick member 6 counterclockwise, the extension 2e relies on the potential force of the spring 5 to abut the cam surface 6a along the cam surface 6a and oppose the cam The surface 6a slides, and the lens unit 2 moves in the direction close to the solid-state imaging element 3 with this movement. Then, as shown by the two-dot chain line in FIG. 3, the abutment position of the extension portion 2e and the cam surface 6a becomes the second lowest position on the clockwise rotation side of the rotation circumferential direction of the joystick member 6, so as As shown in FIG. 1B, the lens unit 2 is located at a normal shooting position. Even if the lens unit 2 is located at a normal photographing position, the spring 5 is still in a state with a longer natural length. Potential energy is imparted by the spring 5 in a direction to bring the lens unit 2 close to the solid imaging element 3, but the extension 2e resists the potential energy. The force method abuts on the cam surface 6a, so the movement of the lens unit 2 is still suppressed. Here, the potential energy is applied to the lens unit 2 by the spring 5 and the potential force is applied by the cam surface 6a. Therefore, the optical axis of the lens unit 2 is at the center of the light receiving surface of the solid-state imaging element 3 to correspond to the The optical axis is adjusted so that the light-receiving surface is vertical. On this basis, the lens unit 2 does not shake. In addition, since the lens unit 2 is pulled toward the solid-state imaging element 3 by the spring 5, the lens unit 2 does not move in a direction away from the solid-state imaging element 3. On the other hand, when the user rotates the joystick member 6 in a clockwise direction, the extension portion 2e relies on the potential energy of the spring 5 to abut against the cam surface 6a along the cam surface 6a and oppose the cam surface 6a. When sliding, the lens unit 2 moves in a direction away from the solid-state imaging element 3 with the action of the potential energy of the spring 5 with this action. Then, as shown by the solid line in FIG. 3, the abutment position of the extension portion 2e -11-200525202 and the cam surface 6a becomes the highest first position on the counterclockwise rotation side of the rotation circumferential direction of the joystick member 6. Therefore, as shown in FIG. 1A, the lens unit 2 is located in the close-up photography position. Even if the lens unit 2 is in the close-up photography position, potential energy is still imparted by the spring 5 in a direction to bring the lens unit 2 close to the solid-state imaging element 3, but the extension portion 2e abuts on the cam surface 6a in a manner that opposes the force of the potential energy. Therefore, the movement of the lens unit 2 is still suppressed. Here, since the potential energy is received by the cam surface 6a, the optical axis of the lens unit 2 is adjusted at the center of the light receiving surface of the solid-state imaging element 3 so as to be perpendicular to the light receiving surface. On this basis, the lens unit 2 does not shake. As described above, in this embodiment, the potential energy of the spring 5 always acts on the holding frame 2d, and the cam surface 6a often abuts on the extension portion 2e in a manner that opposes the potential energy of the spring 5. Therefore, the lens unit 2 does not The optical axis of the lens unit 2 is adjusted at the center of the light-receiving surface of the solid-state imaging element 3 so as to be perpendicular to the light-receiving surface. In addition, the imaging unit 1 incorporates a lens unit 2, a lens moving mechanism 10, and a solid-state imaging element 3. Therefore, the imaging unit 1 can be designed as a device that can take pictures at the same time as imaging. In addition, when the single lens 2a, 2b, 2c is adjusted during the manufacture of the imaging unit 1, the single lens 2a, 2b, 2c is pressed against the solid-state imaging element 3. Since the load is received by the cam surface 6a, the holding frame 2d does not shake. [Second Embodiment] In the above-mentioned first embodiment, the movable range of the lens unit 2 is between the normal shooting position and the close-up shooting position. In the second embodiment, as shown in Figure 4 of -12-200525202, The movable range of the lens unit 2 can be extended to the solid-state imaging element 3 side in a wider range than in the case of the first embodiment. Here, Fig. 4 is a side view showing a partially cutaway portion of the imaging unit 101 of the second embodiment. Hereinafter, the imaging unit 101 will be described with reference to FIG. 4. In the imaging unit 101, the same parts as those of the imaging unit 1 of the first embodiment are assigned the same reference numerals, and the correlation of the same parts is omitted. Instructions. As shown in FIG. 4A, when the lens unit 2 is farthest from the solid-state imaging element 3, it is the close-up photography position as in the case of the first embodiment. As shown in FIG. 4C, the lens unit 2 is closest to the lens unit 2. In the case of the solid-state imaging element 3, while the entire object surface of the single lens 2a, 2b, 2c becomes infinite, the entire imaging surface of the single lens 2a, 2b, 2c becomes the light-receiving surface of the solid-state imaging element 3. That is, when the lens unit 2 is closest to the solid-state imaging element 3, the distance from the main image-side main surface of the single lens 2a, 2b, 2c to the light-receiving surface of the solid-state imaging element 3, and the single lens 2a, 2b, 2c The overall image-side focal distances are approximately the same. In the second embodiment, the position closest to the solid-state imaging element 3 in the movable range of the lens unit 2 is referred to as an infinity photographing position. In addition, even if the lens unit 2 is set at an infinity photographing position, the spring 5 is still in a state that is longer than the natural length. The potential energy of the spring 5 acts in a direction that brings the lens unit 2 closer to the solid-state imaging element 3. . In addition, as shown in FIG. 4B, when the lens unit 2 is located at a specified position from the infinity photographing position to the close-up photographing position, it is the normal photographing position as in the case of the first embodiment, and the single lens 2a, 2b, 2c The whole is in full focus. -13- 200525202 In addition, as the movable range of the lens unit 2 is expanded to a wider range than the solid imaging element 3 side of the first embodiment, the rotatable range of the joystick member 6 is also larger than that of the first embodiment. The situation is extended to a wider range in the circumferential direction, and at the same time, the range of the cam surface 6 a is also extended to a wider range in the circumferential direction. The function and use method of the imaging unit 1 〇1 of the second embodiment will be described, and the joystick member 6 is rotated in a clockwise direction. As shown by the solid line in FIG. 5, the position where the extension portion 2e is in contact with the cam surface 6a The lens unit 2 is located at the closest photographing position at the highest position on the counterclockwise rotation side of the rotation circumferential direction of the joystick member 6. Therefore, when the user rotates the joystick member 6 in the counterclockwise direction, as shown by a dotted line in FIG. 5, the abutment position between the extension portion 2 e and the cam surface 6 a becomes the designated position between the highest position and the lowest position. The lens unit 2 is located at a normal shooting position. When the user further rotates the joystick member 6 in the counterclockwise direction, as shown by the dotted line in FIG. 5B, the contact position between the extension portion 2e and the cam surface 6a becomes the lowest position, and the lens unit 2 is located at the infinity photographing position. . Regardless of whether the lens unit 2 is in the close-up photography position, the normal photography position, or the no-restricted photography position, the spring 5 applies potential energy toward the lens unit 2 near the solid-state imaging element 3. At the same time, the extension 2e It is abutted against the cam surface 6a in a way to oppose this potential energy, so the lens unit 2 does not shake, and the optical axis of the lens unit 2 is at the center of the light receiving surface of the solid-state imaging element 3 so as to be perpendicular to the light receiving surface. Adjust the optical axis. In addition, in the axis adjustment step when the imaging unit 101 was manufactured, although the single lenses 2a, 2b, and 2c were pressed against the solid-state imaging element 3, the load at the time of pressing -14-200525202 was caused by the cam surface 6a. Withstand, so keep the frame 2d from shaking. [Third Embodiment] In the first embodiment described above, the spring 5 imparts potential energy so that the lens unit 2 approaches the solid-state imaging element 3, and is disposed closer to the solid-state imaging element 3 side than the extended portion 2e. The cam surface 6a is in abutment with the extended portion 2e in the state of. On the other hand, in the third embodiment, as shown in FIG. 6, the spring 5 imparts potential energy so that the lens unit 2 is separated from the solid-state imaging element 3, and is disposed away from the solid-state imaging element 3 by being disposed at the extended portion 2 e. The side state causes the cam surface 6 a of the joystick member 6 to abut against the extension portion 2 e. Hereinafter, the imaging unit 1 51 of the third embodiment will be described with reference to FIG. 6. In the imaging unit 1 51, the same parts as those of the imaging unit 1 of the first embodiment are assigned the same reference numerals, and Explanations of the same parts are omitted. In the imaging unit 151 of the third embodiment, one end portion of the spring 5 is not connected to the extended portion 2e, but is connected to the protruding end portion of the second extended portion 2g. The other end of the spring 5 is connected to the inside of the case 7 and is connected to the upper surface of the case 7. The second extension portion 2g is integrated with the holding frame 2d, and the second extension portion 2g is disposed closer to the solid-state imaging element 3 than the extension portion 2e. The spring 5 is a person who imparts potential energy to the holding frame 2d via the second extension portion 2g so that the lens unit 2 is separated from the solid-state imaging element 3. In addition, the extension portion 2e is not abutted on the cam surface 6a, but a projection 2j formed on a surface opposite to the solid imaging element 3 side of the extension portion 2e is abutted on the cam surface 6a. Here, the middle portion of the joystick member 6 from the cam surface 6a to the other end of the joystick member 6 located outside the housing 7 is supported by the upper end of the guide rail 4 and is formed to be parallel to the single lens 2a, -15-200525202 of 2b, 2c The axis of the optical axis can rotate freely. In addition, the cam surface 6a becomes lower on the clockwise rotation side and becomes higher on the counterclockwise rotation side. On the inner bottom surface of the housing 7, a second guide rail 11 is set up, one end of the second guide rail is fixed to the bottom surface of the housing 7, and the other end of the second guide rail is fixed to the housing 7. Above. The second guide rail 1 1 is arranged at a position different from the guide rail 4 in a state parallel to the guide rail 4. A guide support 2h is mounted on the outer peripheral surface of the holding frame 2d, and the guide support 2h is supported on the second guide rail 11. The guide support 2h is provided so as to be able to slide freely with respect to the second guide rail 11. With the guide rails 4 and 11, the lens unit 2 is provided so as to be movable along the guide rails 4 and 11 in the optical axis direction of the lens unit 2. In addition, the solid-state imaging element 3 is not fixed to the inner bottom surface of the case 7, but is fixed to the outer lower surface of the case 7. An opening 7d is formed on the lower surface of the case 7 and penetrates from the inside to the outside of the case 7, and the solid-state imaging element 3 faces the opening 7d. The optical axis of the lens unit 2 passes through the opening, and the light receiving surface of the solid-state imaging element 3 is perpendicular to the optical axis of the lens unit 2. The operation of the imaging unit 151 will be described below. When the user rotates the joystick member 6 in the counterclockwise direction, the protrusion 2j of the extended portion 2e relies on the potential force of the spring 5 to abut the cam surface 6a along the cam surface 6a and oppose the cam surface 6a. When sliding, the lens unit 2 moves away from the solid-state imaging element 3 with this movement. Then, the abutment position of the protruding portion 2j of the extension portion 2e and the cam surface 6a becomes the lowest second position on the clockwise rotation side of the rotation circumferential direction of the joystick member 6, as shown in FIG. 6A, the lens unit 2 Located in close-up photography. Even if the lens unit 2 is located in the close-up photography position, the spring 5 -1 6-200525202 is still in a state with a longer natural length. Potential energy is imparted by the spring 5 in a direction to move the lens unit 2 away from the solid imaging element 3, but because the extension 2 e abuts against the cam surface 6 a in a way that opposes this potential energy, so the movement of the lens unit 2 is still suppressed. On the other hand, when the user rotates the joystick member 6 in a clockwise direction, the protrusion 2j of the extended portion 2e relies on the potential force of the spring 5 to abut the cam surface 6a along the cam surface 6a and The lens unit 2 slides relative to the cam surface 6a, and the lens unit 2 moves in the direction of approaching the solid-state imaging element 3 with the action of the potential energy of the spring 5. Then, the abutment position of the protruding portion 2j of the extension portion 2e and the cam surface 6a becomes the highest first position on the counterclockwise rotation side of the rotation circumferential direction of the joystick member 6, so as shown in FIG. 6B, the lens unit 2 Located at the usual shooting position. Even if the lens unit 2 is in the normal photographing position, the potential energy is still imparted by the spring 5 in a direction to move the lens unit 2 away from the solid-state imaging element 3, but the extension portion 2e abuts on the cam surface 6a in a manner that resists the force acting on the potential Therefore, the movement of the lens unit 2 is still suppressed. In the third embodiment, since the cam surface 6a receives the potential energy of the spring 5, the optical axis of the lens unit 2 is centered on the light receiving surface of the solid-state imaging element 3 so that the optical axis is perpendicular to the light receiving surface. The adjustment of the heart is based on this, and the lens unit 2 does not shake. In addition, when the imaging unit 151 is manufactured, the lens unit 2 is attracted to the direction away from the solid imaging element 3 by a suction machine or the like, so that the lens unit 2 is located at a normal photographing position, and the position of the solid imaging element 3 is adjusted by The mounting position is used to adjust the axis center and focus adjustment of the lens unit 2. However, the load at the time of the suction is carried by the cam-17-200525202 surface 6a, so the frame 2d will not shake. [Application example] If the imaging units 1, 10, 1 and 51 as described above are assembled in a notebook computer, a mobile phone, a mobile terminal, an electronic dictionary device, a PDA (Personal Digital Assistant), an electronic memo pad device, and a digital camera , Printers, and other electronic devices, electronic devices with camera functions can be provided. For example, FIG. 7 is a front view showing a mobile phone 2 01 in which any one of the imaging unit 1, the imaging unit 10, or the imaging unit 1 51 is assembled. The mobile phone 201 is a foldable mobile phone that rotatably connects the lower frame body 20 3 to the upper frame body 202 via a hinge 204. The upper frame 202 further includes an imaging unit 1, an imaging unit 101, or an imaging unit 151, and the lens unit 2 faces an opening window formed on the upper frame 202. The front end portion of the joystick member 6 projects from the upper frame 202 to the outside, and the joystick member 6 can be operated by a user. In addition, shutter keys are provided in the upper frame 202, the lower frame 203, and the like. When the user presses the shutter key, the solid-state imaging element 3 starts to operate, and an image is obtained by the solid-state imaging element 3. Fig. 8 is a perspective view showing a digital camera 3 0 1 in which any one of the imaging unit 1, the imaging unit 101, or the imaging unit 1 51 is assembled. In the digital camera 301, an imaging unit 1, an imaging unit 101, or an imaging unit 151 is built in a housing 302, and a lens unit 2 faces an opening window formed on the housing 302. The front end portion of the joystick member 6 protrudes from the frame body 302 to the outside. In addition, a power switch 3 0 3 for turning on and off the power of the digital camera 301 and a shutter button 3 04 for performing imaging operations on the digital camera 301 are provided on the upper surface of the housing 3 02. When the user uses the power switch 3 03 When the shutter button 3 04 is pressed while the digital 200525202 camera 3 01 is turned on, the solid-state imaging element 3 starts to operate and acquires an image. In addition, a flasher 305 and a viewfinder 306 are provided on the front of the housing 302. The present invention is not limited to the embodiments and application examples described above, and various improvements and design changes can be made as long as they do not exceed the essential scope of the present invention. In each of the embodiments described above, the lens moving mechanism 10 performs focusing by moving the entire single lens 2a, 2b, 2c in the optical axis direction. On the other hand, by fixing any one of the single lenses 2a, 2b, and 2c and moving the other lenses in the optical axis direction, it can also be used as focus for changing the overall focal distance of the single lenses 2a, 2b, and 2c mechanism. For example, the single lens 2a can be fixed to the housing 7 independently from the holding frame 2d, the single lens 2b, 2c can be fixed to the holding frame 2d, and the holding frame 2d can be supported so that it can start with the single lens 2b, 2c. Freely moves on the guide rail 4 in the axial direction. In this case, as in the case of the above-mentioned embodiment, the holding frame 2d is provided with potential energy by the spring 5, and the cam surface 6a is abutted against the extension portion 2e against the potential energy of the spring 5. Therefore, a single lens The optical axes of 2b and 2c are adjusted on both the solid-state imaging element 3 and the single lens 2a. In this case, the single lens 2a becomes the first lens group, and the single lenses 2b, 2c become the second lens group. However, even in the case of two or more groups, as long as the lens group is moved along the optical axis direction, the present lens can still be used. The lens moving mechanism of the invention is applied to a lens group to be moved. In the above embodiment, the cam surface 6a is formed on the joystick member 6. However, a cam surface inclined to a surface perpendicular to the optical axis of the single lens 2a, 2b, 2c may be formed on the holding frame 2d ( Contains the extension 2e). In this case, 200525202, the case ′ is that the protruding end of the lever member 6 is pressed against the cam surface of the holding frame 2 d in the manner that the protruding end of the lever 5 opposes the potential energy of the spring 5 ′. As long as the lever member 6 is rotated, the lens unit 2 can be moved in the optical axis direction. In addition, in the above-mentioned embodiment, the spring 5 is a tension spring. Instead of the spring 5, a compression spring for pressing the lens unit 2 close to the solid-state imaging unit 3 may be provided (in the case of the first embodiment and the second embodiment). Instead of the spring 5, a compression spring for urging the lens unit 2 away from the solid-state imaging unit may be provided (in the case of the third embodiment). When a compression spring is used in the first embodiment and the second embodiment, one end portion of the compression spring is connected to the extension portion 2e, and the other end portion of the compression spring is connected to the upper surface of the housing 7, even if the lens unit 2 is In the normal photography position, the compression spring is still compressed in a more natural length. In the case where a compression spring is used in the third embodiment, one end of the compression spring is connected to the second extension portion, and the other end of the compression spring is connected to the bottom surface of the spring 5. Even if the lens unit 2 is located close to the photographing position, , The compression spring is still in a state of more natural length compression. In addition, in the above embodiment, the spring 5 is exemplified as a person that imparts potential energy to the lens unit 2 in the direction of the optical axis. However, the spring 5 is not limited to the spring 5 and may be another elastically deformable elastic member. In the above embodiment, the spring 5 is connected to the extension portion 2e. However, the spring 5 may be connected to the holder frame 2d or the extension portion 2e on the side closer to the holding frame 2d than the guide rail 4. In addition, in the above embodiment, by rotating the joystick member 6, the extension portion 2e can be relatively slid with respect to the cam surface 6a, and the lens unit 2-20-200525202 is moved in the optical axis direction. On the other hand, the lens unit 2 can also be made to slide the joystick member 6 in a direction perpendicular to the paper surface of FIG. 1 or FIG. 2 so that the extension portion 2 e can slide relative to the cam surface 6 a. Move along the optical axis. In addition, if the joystick member 6 is movable, by moving the joystick member 6 in a movable direction, the extension portion 2e can be relatively slid with respect to the cam surface 6a, and the lens unit 2 can be moved along the optical axis. The direction of movement, the movable direction of the joystick member 6 and the shape of the cam surface 6a are not particularly limited. However, if the lens unit 2 is moved in the direction of the optical axis by the relative sliding of the cam surface 6a and the extension 2e, the cam surface 6a needs to be inclined with respect to the optical axis of the lens unit 2 at least. In either case, the cam surface 6a abuts on the extension portion 2e so as to act on the potential energy of the anti-spring 5. [Brief Description of the Drawings] FIG. 1A is a side view of the imaging unit 1 showing a close-up photography state. FIG. 1B is a side view of the imaging unit 1 showing a normal photographing state. Fig. 2 is a plan view showing the imaging unit 1 shown in Fig. 1. Fig. 3 is a view showing a joystick member 6 provided in the imaging unit 1 shown in Fig. 1. Fig. 4A is a side view of another imaging unit 1 0 1 showing a close-up photography state. FIG. 4B is a side view of the imaging unit 1101 showing a normal photographing state. FIG. 4C is a side view of the imaging unit 1 〇 1 showing the infinity photographing state 〇 FIG. 5 is a diagram showing a joystick member 6 included in the imaging unit 1 101 shown in FIG. 4. -21- 200525202 Figure 6 A is a side view of the imaging unit 151 showing the close-up photography state. Fig. 6B is a side view of another imaging unit 151 showing a normal photographing state. Imaging unit 1 0 1 or imaging imaging unit 1 0 1 or imaging
第7圖爲顯示組裝有成像單元 單元1 5 1之行動電話的前視圖。 第8圖爲顯示組裝有成像單元 單元151之數位相機的立體圖。 (元件符號說明） 1 成 像 單 元 2 透 鏡 單 元 2 a 第 1 單 透 鏡 2b 第 2 單 透 鏡 2c 第 3 單 透 鏡 2d 保 持 框 2 e 延 出 部 2f 貫 穿 孔 2g 第 2 延 出 部 2h 導 引 支 承 2j 延 出 部 之 突 部 3 固 體 成 像 元 件 4 導 軌 5 彈 簧 6 操 縱 桿 構 件 -22- 200525202 6a 凸輪面 7 殼體 7a 開口部 7d 開口部 10 透鏡移動機構 11 第2導軌 10 1 成像單元 15 1 成像單元 20 1 行動電話 202 上框體 203 下框體 204 鉸鏈 301 數位相機 302 框體 303 電源開關 304 快門鍵 305 閃光器 306 取景器Fig. 7 is a front view showing a mobile phone in which the imaging unit unit 151 is assembled. Fig. 8 is a perspective view showing a digital camera in which the imaging unit unit 151 is assembled. (Description of element symbols) 1 Imaging unit 2 Lens unit 2 a 1st single lens 2b 2nd single lens 2c 3rd single lens 2d holding frame 2 e extension 2f through-hole 2g second extension 2h guide support 2j extension Projecting part 3 Solid imaging element 4 Guide 5 Spring 6 Joystick member-22- 200525202 6a Cam surface 7 Housing 7a Opening 7d Opening 10 Lens moving mechanism 11 Second guide 10 1 Imaging unit 15 1 Imaging unit 20 1 Mobile phone 202 upper frame 203 lower frame 204 hinge 301 digital camera 302 frame 303 power switch 304 shutter button 305 flasher 306 viewfinder