201126223 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種變焦鏡頭。 [0002] 〇 【先前技術】 目前，可伸縮鏡頭廣泛應用於數位相機中，其在工作狀 態下可以伸出在數位相機機身外，滿足調焦需求，而在 非工作狀態下能夠收縮在機身内，從而縮小數位相機之 厚度，便於攜帶。然，先前可伸縮鏡頭之光圈快門元件 與鏡片一般沿光轴方向（一般與數位相機之機身厚度方向 相同）排列在鏡筒内以使光圈快門元件及鏡片正常工作。 因此’即使在收縮之後，可伸縮鏡頭之厚度也很難小於 光圈快門組件與鏡片厚度之和’導致數位柯機之機身厚 度無法進一步縮小，難以更加薄型化。 [0003] 【發明内容】 有鑒於此，有必要提供一種結構緊湊且體積小之變焦鏡 頭。 Ο [0004] 一種變焦鏡頭’其包括一個移動筒，一個擋環及一個光 圈快門元件。所述移動筒包括一個底板及位於所述底板 上之一個承載部、至少三個凸柱及至少三個彈性件。所 述承載部用於承栽一個鏡片，所述凸柱設置於所述承栽 部之周圍’每個凸柱上套設對應之一個彈性件〇所述擋 環沿垂直於所述變焦鏡頭之光轴方向固定於所述移動筒 與所述底板相對之一端。所述鏡片包括一個光學凸面， 所述光學凸面面向所述檔環，所述光圈快門元件上開設 一個光圈孔及至少三個分別與所述至少三個凸枉對應之 099102054 表單編號A0101 第5頁/共23頁 0992003980-0 201126223 凹槽。所述光圈快門元件在所述移動筒與所述擋環圍成 之空間内沿所述變焦鏡頭之光軸方向移動，使得所述變 焦鏡頭處於收縮狀態時，所述鏡片之光學凸面伸入所述 光圈孔。當所述變焦鏡頭處於伸出狀態時，所述光圈快 門元件在所述至少三個彈性件之彈力作用下離開所述鏡 [0005] 如此，當所述變焦鏡頭處於收縮狀態時，所述移動筒内 之鏡片之光學凸面伸入並收容在所述光圈孔中，使得所 述變焦鏡頭之厚度（光軸方向之長度）小於光圈快門組件 與鏡片厚度之和，從而實現所述變焦鏡頭沿光軸方向之 尺寸減少。而所述變焦鏡頭處於伸出狀態時，所述光圈 快門元件又能迅速與所述移動筒分離，光圈快門元件與 鏡片回復到各自正常工作之位置。即在不影響拍照功能 之情況下，減小變焦鏡頭之厚度（光軸方向之長度），使 變焦鏡頭之結構更加緊湊，體積減小。 【實施方式】 [0006] 下面將結合附圖，對本發明作進一步的詳細說明。 [0007] 請參閱圖1及圖2，為本發明實施方式提供之一種變焦鏡 頭100，其包括多個鏡片1，一個影像感測器2，一個驅動 部3(見圖1)，一個底座10，一個固定筒20，一個凸輪筒 30，一個導向筒40，一個變焦筒50，一個移動筒60，一 個擂環61及一個光圈快門元件70。所述固定筒20、變焦 筒50及移動筒60内均設置有鏡片1，且多個鏡片1同軸設 置。 [0008] 所述底座10為一板狀結構，其包括一承載面11。所述影201126223 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a zoom lens. [0002] 先前 [Prior Art] At present, retractable lenses are widely used in digital cameras, which can extend out of the digital camera body under working conditions to meet the focusing requirements, and can be contracted in the non-working state. Inside, it reduces the thickness of the digital camera and is easy to carry. However, the aperture shutter element of the previously retractable lens and the lens are generally arranged in the lens barrel in the direction of the optical axis (generally the same as the thickness of the body of the digital camera) to allow the aperture shutter element and the lens to operate normally. Therefore, even after shrinking, the thickness of the retractable lens is hardly smaller than the sum of the thickness of the aperture shutter assembly and the lens, and the thickness of the body of the digital machine cannot be further reduced, making it difficult to be thinner. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a zoom lens lens that is compact and small in size. 0004 [0004] A zoom lens' includes a moving cylinder, a retaining ring and a diaphragm shutter member. The moving cylinder comprises a bottom plate and a bearing portion on the bottom plate, at least three protrusions and at least three elastic members. The carrying portion is configured to carry a lens, and the protruding post is disposed around the receiving portion. Each of the protruding posts is sleeved with a corresponding elastic member, and the retaining ring is perpendicular to the zoom lens. The optical axis direction is fixed to one end of the moving cylinder opposite to the bottom plate. The lens includes an optical convex surface, the optical convex surface faces the retaining ring, the aperture shutter element defines a diaphragm aperture and at least three 099102054 respectively corresponding to the at least three tenons. Form No. A0101 Page 5 / Total 23 pages 0992003980-0 201126223 Groove. The aperture shutter element moves in the optical axis direction of the zoom lens in a space surrounded by the moving cylinder and the retaining ring, so that when the zoom lens is in a contracted state, the optical convex surface of the lens extends into the Said aperture hole. When the zoom lens is in an extended state, the aperture shutter member leaves the mirror under the elastic force of the at least three elastic members. Thus, when the zoom lens is in a contracted state, the movement An optical convex surface of the lens in the cylinder protrudes into and is received in the aperture hole, such that the thickness of the zoom lens (the length of the optical axis direction) is smaller than the sum of the thickness of the aperture shutter assembly and the lens, thereby realizing the zoom lens along the light The size of the shaft direction is reduced. When the zoom lens is in the extended state, the aperture shutter element can be quickly separated from the moving cylinder, and the aperture shutter element and the lens are returned to their respective normal working positions. That is, the thickness of the zoom lens (the length of the optical axis direction) is reduced without affecting the photographing function, so that the structure of the zoom lens is more compact and the volume is reduced. [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings. 1 and 2, a zoom lens 100 includes a plurality of lenses 1, an image sensor 2, a driving portion 3 (see FIG. 1), and a base 10 according to an embodiment of the present invention. A fixed cylinder 20, a cam cylinder 30, a guide cylinder 40, a zoom cylinder 50, a moving cylinder 60, an annulus 61 and a diaphragm shutter member 70. The fixed cylinder 20, the zoom cylinder 50, and the moving cylinder 60 are each provided with a lens 1, and the plurality of lenses 1 are coaxially disposed. The base 10 is a plate-like structure including a bearing surface 11 . The shadow
099102054 表單編號A0101 第6頁/共23頁 0S 201126223 像感測器2 ’所述驅動部3 (見圖1)及所述固定筒2 〇均設置 於所述承載面11上。所述影像感測器2之感測區正對所述 固定筒20内之鏡片1之光軸中心，用於感測從所述鏡 入射之光線，並將光信號轉換成電信號，從而成像。如 圖1所示’所述驅動部3用於驅動所述凸輪筒3〇沿所述變 焦鏡頭100之光軸方向移動，其包括一直流馬達減速齒輪 箱301及一步進馬達減速齒輪箱302。所述直流馬達減速 齒輪箱301用於在變焦時驅動所述凸輪筒3〇轉動，從而帶 0 動所述導向筒40，變焦筒50及移動筒60沿光軸方向移動 。所述步進馬達減速齒輪箱302用於在對焦時驅動所述凸 輪筒30轉動，從而帶動所述導向筒4〇，變焦筒5〇及移動 筒60沿光軸方向移動。所述直流馬達減速齒輪箱3〇1及步 進馬達減速齒輪箱302設置在所述固定筒2〇之同一側，使 所述變焦鏡頭100在X轴及γ軸方向之尺寸減小。 [0009] 所述固定筒20固定在所述底座上，其内侧設有多個第 一導槽21及三個平行於光轴方向之第二導槽22。所述第 〇 一導槽2丨用於引等斯述凸輪筒3 〇滑動》所述第二導槽22 用於引導所述導向筒40滑動》 [0010] 所述凸輪筒30設置於所述固定筒2〇内，用於帶動所述變 焦筒50及移動筒60沿光軸方向移動。所述凸輪筒30之外 側設有多個用於與所述第二導槽22相配合之第一滑腳31 及與所述驅動部3相配合之傳動齒輪32。所述第一滑腳31 及所述傳動齒輪32位於同一平面上。所述傳動齒輪32與 所述驅動部3相配合，用於使所述凸輪筒3〇在所述驅動部 3之驅動下沿所述變焦鏡頭1〇〇之光轴方向移動。所述凸 099102054 表單編號A0101 第7頁/共23頁 0992003980-0 201126223 輪筒30内設置有三個第一凸輪槽33 '三個第二凸輪槽34 、彡個卡塊35及三個加強塊36 °所述第一凸輪槽33及第 二凸輪槽3 4均在所述凸輪筒3 〇之内壁上從物側延伸到像 侧。每個第一凸輪槽33包括〆個靠近物側之頂端面331。 每個加強塊3 6位於對應之一個頂端面3 31靠近像側之一侧 。由於所述頂端面331係在拍照狀態時所述變焦筒50最頻 繁使用之位置，且在所述頂端面331處，所述變焦筒50對 所述第一凸輪槽33之力不能被分解成沿第一凸輪槽33之 導甸之分力，而係全部施加在所述第一凸輪槽33上。因 此’當所述變焦筒50位於所述頂端面331時，若所述變焦 筒5〇受到外部衝擊力，衝擊力將全部作用於所述頂端面 331 ’使得所述第一凸輪槽33之頂端面331處最容易受到 磨損，因此所述加強塊36可加強所述第一凸輪槽33之強 度，減輕磨損。 [0011] 099102054 所述導向筒40隨所述凸輪筒30-起移動，並且可限制所 述變焦筒50及移動_只钱㈣向移具體之，所 述導向筒40收容於所述凸輪筒3〇内所述導向筒4〇之外 側設有f個與所述第二導槽22相配合之第二滑腳41。所 遂導向筒4G之内側設置有兩個垂直於光軸方向之第一滑 槽固沿光軸方向之第二滑槽43。其中，一個第一 滑槽與所迷加強塊36相配合，另一個第〆滑槽42與所 述卡塊35相卡扣’從而使所述導向筒繼所述凸輪筒3〇 一起沿光軸方向移動。 ::Τ及所述移動筒6°容置於所述導由筒40内。 所速變焦㈣之外側等間距設置有三個第4輪針51， 表單編號Α0101 0992003980-0 第8頁/共23頁 [0012] 201126223 所述移動筒60之外側等間距設置有三個第二凸輪針62。 Ο 所述第一凸輪針51及第二凸輪針62穿過所述導向筒4〇之 第二滑槽43分別在所述凸輪筒30之第—凸輪槽33及第二 凸輪槽34内滑動’從而使所述驅動部3帶動所述凸輪筒3〇 轉動時，所述凸輪筒30沿所述固定筒20之第一導槽21沿 光軸方向移動’同時所述變焦筒50及移動筒6〇在所述導 向筒4 0之限制下只能沿光轴方向在所述凸輪筒3 〇之第— 凸輪槽33及第一凸輪槽34滑動。所述變焦筒之面向所 述底座10之表面上開設一容置腔52(見圖6)，所述移動筒 60容置於所述容置腔52内，暮在所述變焦筒5〇内沿光軸 方向移動，以改變所述變焦筒50内之鏡片1與所述移動筒 60内之鏡片1之間之距離，進行變焦或對焦。 [0013] Ο 由於所述第一滑腳31及所述傳動齒輪32位於同一平面上 ，不佔用光轴方向之尺寸’使得在所述固定筒2〇之沿變 焦鏡頭1〇〇之光軸方向之高度一定之情況下，所述凸輪筒 30在光轴方向上有最大之位移量。由於每個第一凸輪槽 33包括一個靠近物娜之頂端面331，並且每個加強塊36位 於對應之第一凸輪槽33之頂端面331靠近像侧之一側，不 佔用所述第一凸輪槽33與第二凸輪槽34沿光轴方向之空 間，使得在所述凸輪筒3〇之沿變焦鏡頭1〇〇之光軸方向之 高度一定之情況下，所述第一凸輪槽33及第二凸輪槽34 得到沿光軸方向之最大位移量，從而使所述變焦筒及 移動筒60得到沿變焦鏡頭1 〇〇之光轴方向之最大位移量’ 增大所述變焦鏡頭1〇〇之變焦倍率。所述底座10上開設有 多個容置孔12，當所述變焦鏡頭1〇〇處於收縮狀態時，所 099102054 表單編號Α0101 第9買/共23頁 0992003980-0 201126223 述導向筒40之笙_ 弟一滑腳41分別容置於所述容置孔12中， 使仔在所相定筒2G沿變焦鏡頭100之光軸方向之高度一 所述&輪琦3 0能夠得到沿變焦鏡頭1 〇 〇之光 軸方向之最大位移。 [0014] 如圖3 ’ 5，R邮-所不，所述移動筒60包括一個底板63及位於 所述底板63上之—個承載部即、三個凸柱咖及王個彈時635。所述承栽部631用於承載-個鏡片1。所述凸枉 633設置於所述承栽部631之周圍。每個凸柱633上套設 對應之冑彈性件635。在本實施方式中，所述三個凸柱 633位於同-圓周上^所述賴件祕簧。所述檔環㈣ 垂直於所述變焦鏡頭m之光軸方向固定於所述移動筒6〇 與所述底板63相對之一端。所述擋環61之外徑大於所述 移動筒60之内徑’所述擋環61之内徑小於所述移動筒6〇099102054 Form No. A0101 Page 6 of 23 OS 12262262 The image sensor 2 'the drive unit 3 (see FIG. 1) and the fixed cylinder 2 are both disposed on the carrying surface 11. The sensing region of the image sensor 2 is opposite to the optical axis center of the lens 1 in the fixed cylinder 20 for sensing the light incident from the mirror and converting the optical signal into an electrical signal for imaging . As shown in Fig. 1, the driving portion 3 is for driving the cam barrel 3 to move in the optical axis direction of the zoom lens 100, and includes a DC motor reduction gear box 301 and a stepping motor reduction gear box 302. The DC motor reduction gear box 301 is configured to drive the cam barrel 3 to rotate when zooming, thereby moving the guide cylinder 40, and the zoom cylinder 50 and the moving cylinder 60 are moved in the optical axis direction. The stepping motor reduction gear box 302 is for driving the rotation of the cam barrel 30 when focusing, thereby driving the guide cylinder 4, the zoom cylinder 5 and the moving cylinder 60 to move in the optical axis direction. The DC motor reduction gear box 3〇1 and the step motor reduction gear box 302 are disposed on the same side of the fixed cylinder 2〇, and the size of the zoom lens 100 in the X-axis and γ-axis directions is reduced. [0009] The fixing cylinder 20 is fixed on the base, and has a plurality of first guiding grooves 21 and three second guiding grooves 22 parallel to the optical axis direction on the inner side thereof. The second guide groove 2 is used for guiding the cam barrel 3 to slide. The second guide groove 22 is for guiding the guide cylinder 40 to slide. [0010] The cam barrel 30 is disposed on the The fixed cylinder 2 is configured to drive the zoom cylinder 50 and the moving cylinder 60 to move in the optical axis direction. The outer side of the cam barrel 30 is provided with a plurality of first sliding legs 31 for engaging with the second guiding grooves 22 and a transmission gear 32 for cooperating with the driving portion 3. The first sliding foot 31 and the transmission gear 32 are located on the same plane. The drive gear 32 cooperates with the drive unit 3 for moving the cam barrel 3 in the optical axis direction of the zoom lens 1 under the driving of the drive unit 3. The convex 099102054 Form No. A0101 Page 7 / Total 23 page 0992003980-0 201126223 Three first cam grooves 33 are provided in the drum 30 'Three second cam grooves 34, one block 35 and three reinforcing blocks 36 The first cam groove 33 and the second cam groove 34 extend from the object side to the image side on the inner wall of the cam barrel 3 。. Each of the first cam grooves 33 includes a top end face 331 on the object side. Each of the reinforcing blocks 36 is located on one side of the corresponding one of the top end faces 31 to the image side. Since the top end surface 331 is at the position where the zoom cylinder 50 is most frequently used in the photographing state, and at the top end surface 331, the force of the zoom cylinder 50 against the first cam groove 33 cannot be decomposed into The component of force along the first cam groove 33 is all applied to the first cam groove 33. Therefore, when the zoom cylinder 50 is located at the top end surface 331, if the zoom cylinder 5 is subjected to an external impact force, the impact force will all act on the top end surface 331 'so that the top end of the first cam groove 33 The face 331 is most susceptible to wear, so the stiffener 36 can strengthen the strength of the first cam groove 33 and reduce wear. [0011] 099102054 The guiding cylinder 40 moves with the cam cylinder 30, and can restrict the zoom cylinder 50 and the movement of the zoom cylinder 50, and the guiding cylinder 40 is received in the cam cylinder 3 The outer side of the guiding cylinder 4 is provided with f second sliding legs 41 which cooperate with the second guiding groove 22. The inner side of the guide cylinder 4G is provided with two second chutes 43 which are perpendicular to the optical axis direction and which are fixed in the optical axis direction. Wherein, one first chute cooperates with the reinforcement block 36, and the other third chute 42 snaps with the block 35 so that the guide cylinder follows the cam barrel 3 along the optical axis Move in direction. The Τ and the moving cylinder 6 are accommodated in the guide cylinder 40. The speed zoom (4) is equidistantly disposed with three fourth wheel pins 51, form number Α0101 0992003980-0 page 8/23 pages [0012] 201126223 The moving cylinder 60 is equidistantly disposed with three second cam needles on the outer side 62. Ο the first cam needle 51 and the second cam needle 62 slide through the second sliding groove 43 of the guiding cylinder 4 in the first cam groove 33 and the second cam groove 34 of the cam cylinder 30 respectively. Therefore, when the driving portion 3 drives the cam barrel 3 to rotate, the cam barrel 30 moves along the optical axis direction along the first guiding groove 21 of the fixed barrel 20 while the zoom barrel 50 and the moving tube 6 are moved. The yoke can slide only in the first cam groove 33 and the first cam groove 34 of the cam barrel 3 in the optical axis direction under the restriction of the guide cylinder 40. An accommodating cavity 52 (see FIG. 6) is disposed on a surface of the zoom cylinder facing the base 10. The moving cylinder 60 is received in the accommodating cavity 52 and is disposed in the zoom cylinder 5 Moving in the optical axis direction to change the distance between the lens 1 in the zoom cylinder 50 and the lens 1 in the moving cylinder 60 to perform zooming or focusing. [0013] Ο Since the first sliding leg 31 and the transmission gear 32 are located on the same plane, the size of the optical axis direction is not occupied, so that the optical axis of the zoom lens 1 在 is along the fixed cylinder 2〇 When the height is constant, the cam barrel 30 has the largest displacement amount in the optical axis direction. Since each of the first cam grooves 33 includes a top end face 331 close to the object, and each reinforcing block 36 is located on the side of the top end face 331 of the corresponding first cam groove 33 near the image side, the first cam is not occupied. The space between the groove 33 and the second cam groove 34 in the optical axis direction is such that the first cam groove 33 and the first cam groove 3 are fixed in the direction of the optical axis direction of the zoom lens 1 〇〇 The two cam grooves 34 obtain the maximum displacement amount in the optical axis direction, so that the zoom cylinder and the moving cylinder 60 obtain the maximum displacement amount along the optical axis direction of the zoom lens 1 ' to increase the zoom lens 1 Zoom magnification. The base 10 is provided with a plurality of accommodating holes 12, and when the zoom lens 1 is in a contracted state, the 099102054 form number Α 0101 9th buy / total 23 pages 0992003980-0 201126223 导向 导向 导向 导向 笙 _ The slidable legs 41 are respectively received in the accommodating holes 12 so that the height of the phased cylinder 2G along the optical axis of the zoom lens 100 can be obtained along the zoom lens 1 The maximum displacement of the optical axis direction. [0014] As shown in FIG. 3'5, R-mail, the moving cylinder 60 includes a bottom plate 63 and a bearing portion on the bottom plate 63, that is, three studs and a king bullet 635. The bearing portion 631 is used to carry a lens 1 . The tenon 633 is disposed around the receiving portion 631. Each of the protrusions 633 is sleeved with a corresponding elastic member 635. In the present embodiment, the three studs 633 are located on the same circumference. The shift ring (4) is fixed to one end of the moving cylinder 6〇 opposite to the bottom plate 63 perpendicular to the optical axis direction of the zoom lens m. The outer diameter of the retaining ring 61 is larger than the inner diameter of the moving cylinder 60. The inner diameter of the retaining ring 61 is smaller than the moving cylinder 6〇.
之内徑，從而使所述擋環61能夠抵持在所述移動筒6〇之 與所述底板63相對之一端，並且在所述移動筒6〇上形成 一個阻擋面。所述鏡片i包括一個光學凸#1〇1，所述光 學凸面101面向所述擋環61。The inner diameter is such that the retaining ring 61 can abut against one end of the moving cylinder 6 opposite the bottom plate 63, and a blocking surface is formed on the moving cylinder 6〇. The lens i includes an optical projection #1〇1, the optical convex surface 101 facing the retaining ring 61.
[0015] 如圖3及4所示，所述光圈快門元件7〇為圓柱狀結構，且 所述光圈快門組件70之外徑小於所述移動筒6〇之内徑並 且大於所述播環61之内輕，從而使所述光圈快門組件7 〇 在所述移動筒60與所述擋環61圍成之空間内沿所述變焦 鏡頭100之光轴方向移動。所述光圈快門元件7〇包括相背 之第一表面71及第二表面72。所述第一表面71面向所述 移動筒60之底板63。所述光圈快門元件7〇上開設一貫穿 所述第一表面Ή及第二表面72之光圈孔73。所述第一表 099102054 表單編號Α0101 第10頁/共23頁 0992003980-0 201126223 Ο 面71上開設三個與所述凸柱633對應之凹槽711 ’所述第 二表面72上設置一個第一快門葉片721、一個第二快門葉 片722及兩個磁閥723，所述兩個磁閥723分別控制第一 快門苹片721及第二棟門葉片722在所述第'一表面72上轉 動。所述第一快門檗片721上開設第一快門孔7210。所述 第二快門苹片7 2 2上開設弟二快門孔7 2 2 〇。所述第一快产1 孔7210之半徑大於所述第二快門孔7220之半徑。當所述 第一快門孔7210及第二快門孔7220均不與所述光圈孔73 重疊時，所述光圈快門元件70上形成一個大光圈；當所 述第一快門孔721〇與所述光圈孔了 3重疊時，所述光圈快 門組件70上形成一個中光圈；當所述第二快門孔7220遮 擋所述光圈孔73時，所述光圈快_門元件70上形成一個小 光圈，從而可以更好之控制光通量。 [0016] ❹ 如圖5及圖6所示，當所述變焦鏡頭1〇〇處於收縮狀態時， 所述光圈快門元件70被所述變焦筒50壓下向所述移動 筒60之底板63方向移動，此時所述鏡片1之光學凸面1〇1 伸入並容置於所述光圈孔73，使得所述變焦鏡頭1〇〇沿光 轴方向之高度減小。在拍照時，所述變焦鏡頭100處於仲 出狀態，此時所述變焦筒50移開，所述光圈快門元件7〇 在所述彈性件635之彈力作用下升起，抵持在所述擒環61 上’使所述光圈快門元件70與鏡片1回復到各自正常工作 之位置ώ 如此，當所述變焦鏡頭處於收縮狀態時，所述移動筒内 之鏡片之光學凸面伸入並收容在所述光圈孔中，使得所 述變焦鏡頭之厚度（光轴方向之長度）小於光圈快門組件 099102054 表單編號Α0101 第11頁/共23頁 0992003980-0 [0017] 201126223 與鏡片厚度之和，從而實現所述變焦鏡頭沿光軸方向之 尺寸減少。而所述變焦鏡頭處於伸出狀態時，所述光圈 快門元件又能迅速與所述移動筒分離，光圈快門元件與 鏡片回復到各自正常工作之位置。即在不影響拍照功能 之情況下，減小變焦鏡頭之厚度（光軸方向之長度），使 變焦鏡頭之結構更加緊湊，體積減小。同時還可使所述 變焦筒及移動筒在變焦鏡頭之光軸向之活動範圍增大， 增大變焦倍率。 [0018] 另外，本領域技術人員可在本發明精神内做其他變化， 然，凡依據本發明精神實質所做的變化，都應包含在本 發明所要求保護的範圍之内。 【圖式簡單說明】 [0019] 圖1係本發明較佳實施方式之變焦鏡頭之結構示意圖； [0020] 圖2係圖1之變焦鏡頭之分解圖； [0021] 圖3係圖1之變焦鏡頭之移動筒及光圈快門元件之分解圖 [0022] 圖4係圖1之變焦鏡頭之移動筒及光圈快門元件之另一角 度之分解圖； [0023] 圖5係圖1之變焦鏡頭之收縮狀態之剖視圖；及 [0024] 圖6係圖1之變焦鏡頭之伸出狀態之剖視圖。 【主要元件符號說明】 [0025] 變焦鏡頭 100 [0026] 鏡片 1 099102054 表單編號A0101 第12頁/共23頁 0992003980-0 201126223 Ο ❹ [0027] 光學凸面 101 [0028] 影像感測器 2 [0029] 驅動部 3 [0030] 直流馬達減速齒輪箱 301 [0031] 步進馬達減速齒輪箱 302 [0032] 底座 10 [0033] 承載面 11 [0034] 容置孔 12 [0035] 固定筒 20 [0036] 第一導槽 21 [0037] 第二導槽 22 [0038] 凸輪筒 晨 αυ rnnrtnl Luuoyj JiL tv.v» 牙r 一呀聊 ΓΊ'、 [0040] 傳動齒輪 32 [0041] 第一凸輪槽 33 [0042] 頂端面 331 [0043] 第二凸輪槽 34 [0044] 卡塊 35 [0045] 加強塊 36 099102054 表單編號Α0101 第13頁/共23頁 0992003980-0 201126223 [0046] 導向筒 40 [0047] 第二滑腳 41 [0048] 第一滑槽 42 [0049] 第二滑槽 43 [0050] 變焦筒 50 [0051] 第一凸輪針 51 [0052] 容置腔 52 [0053] 移動筒> 60 [0054] 擋環 61 [0055] 第二凸輪針 62 [0056] 底板 63 [0057] 承載部 631 [0058] 凸柱 633 [0059] 彈性件 635 [0060] 光圈快門組件 70 [0061] 第一表面 71 [0062] 凹槽 711 [0063] 第二表面 72 [0064] 第一快門葉片 721 099102054 表單編號A0101 第14頁/共23頁 0992003980-0 201126223 [0065] 第一快門孔 7210 [0066] 第二快門葉片 722 [0067] 第二快門孔 7220 [0068] 磁閥 723 [0069] 光圈孔 73 Ο 099102054 表單編號Α0101 第15頁/共23頁 0992003980-0[0015] As shown in FIGS. 3 and 4, the aperture shutter member 7 is a cylindrical structure, and the outer diameter of the aperture shutter assembly 70 is smaller than the inner diameter of the moving cylinder 6〇 and larger than the broadcast ring 61. The inside of the zoom lens assembly 7 is moved in the space surrounded by the moving cylinder 60 and the retaining ring 61 in the optical axis direction of the zoom lens 100. The aperture shutter member 7 includes a first surface 71 and a second surface 72 opposite each other. The first surface 71 faces the bottom plate 63 of the moving cylinder 60. A diaphragm aperture 73 extending through the first surface and the second surface 72 is defined in the aperture shutter element 7 . The first table 099102054, the form number Α 0101, the 10th page, the total 23 page, the 0992003980-0 201126223 Ο the surface 71 defines three grooves 711 corresponding to the protrusions 633. The shutter blade 721, a second shutter blade 722 and two magnetic valves 723 respectively control the first shutter piece 721 and the second door leaf blade 722 to rotate on the first surface 72. A first shutter hole 7210 is defined in the first shutter blade 721. The second shutter piece 7 2 2 is provided with a second shutter hole 7 2 2 〇. The radius of the first fast-producing hole 7210 is larger than the radius of the second shutter hole 7220. When the first shutter hole 7210 and the second shutter hole 7220 do not overlap with the aperture hole 73, a large aperture is formed on the aperture shutter element 70; when the first shutter hole 721 is opposed to the aperture When the aperture 3 overlaps, the aperture shutter assembly 70 forms a middle aperture; when the second shutter aperture 7220 blocks the aperture aperture 73, the aperture fast_door element 70 forms a small aperture, thereby Better control of luminous flux. [0016] As shown in FIGS. 5 and 6, when the zoom lens 1 is in a contracted state, the aperture shutter element 70 is pressed by the zoom cylinder 50 toward the bottom plate 63 of the moving cylinder 60. Moving, at this time, the optical convex surface 1〇1 of the lens 1 protrudes into and is accommodated in the aperture hole 73, so that the height of the zoom lens 1 〇〇 in the optical axis direction is reduced. When taking a picture, the zoom lens 100 is in a secondary state, at which time the zoom cylinder 50 is removed, and the aperture shutter element 7 is raised by the elastic force of the elastic member 635 to resist the 擒On the ring 61, the aperture shutter element 70 and the lens 1 are returned to their respective normal working positions. Thus, when the zoom lens is in the contracted state, the optical convex surface of the lens in the moving cylinder is extended and received therein. In the aperture of the aperture, the thickness of the zoom lens (the length of the optical axis direction) is smaller than the aperture shutter assembly 099102054. Form number Α 0101 page 11 / total 23 page 0992003980-0 [0017] 201126223 and the thickness of the lens, thereby achieving The size of the zoom lens in the optical axis direction is reduced. When the zoom lens is in the extended state, the aperture shutter element can be quickly separated from the moving cylinder, and the aperture shutter element and the lens are returned to their respective normal working positions. That is, the thickness of the zoom lens (the length of the optical axis direction) is reduced without affecting the photographing function, so that the structure of the zoom lens is more compact and the volume is reduced. At the same time, the zoom cylinder and the moving cylinder can be increased in the moving range of the optical axis of the zoom lens to increase the zoom magnification. In addition, those skilled in the art can make other changes in the spirit of the invention, and all changes that are made according to the spirit of the invention should be included in the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0019] FIG. 1 is a schematic view showing the structure of a zoom lens according to a preferred embodiment of the present invention; [0020] FIG. 2 is an exploded view of the zoom lens of FIG. 1; [0021] FIG. [0022] FIG. 4 is an exploded view of another angle of the moving cylinder and the aperture shutter element of the zoom lens of FIG. 1; [0023] FIG. 5 is a contraction of the zoom lens of FIG. [0024] FIG. 6 is a cross-sectional view showing an extended state of the zoom lens of FIG. 1. [Main Component Symbol Description] [0025] Zoom Lens 100 [0026] Lens 1 099102054 Form No. A0101 Page 12 / Total 23 Pages 0992003980-0 201126223 Ο ❹ [0027] Optical Convex 101 [0028] Image Sensor 2 [0029] Drive unit 3 [0030] DC motor reduction gear box 301 [0031] Step motor reduction gear box 302 [0032] Base 10 [0033] Bearing surface 11 [0034] accommodating hole 12 [0035] Fixed tube 20 [0036] First guide groove 21 [0037] second guide groove 22 [0038] cam tube morning αυ rnnrtnl Luuoyj JiL tv.v» tooth r 呀 talk ΓΊ ', [0040] transmission gear 32 [0041] first cam groove 33 [ 0042] Top face 331 [0043] Second cam groove 34 [0044] Block 35 [0045] Strengthening block 36 099102054 Form number Α 0101 Page 13 / Total 23 page 0992003980-0 201126223 [0046] Guide tube 40 [0047] Second sliding foot 41 [0048] First sliding groove 42 [0049] Second sliding groove 43 [0050] Zoom cylinder 50 [0051] First cam needle 51 [0052] accommodating cavity 52 [0053] Moving cylinder > 60 [ 0054] retaining ring 61 [0055] second cam needle 62 [0056] bottom plate 63 [0057] bearing portion 631 [0058] convex [0059] Elastic member 635 [0060] Aperture shutter assembly 70 [0061] First surface 71 [0062] Groove 711 [0063] Second surface 72 [0064] First shutter blade 721 099102054 Form number A0101 Page 14 / A total of 23 pages 0992003980-0 201126223 [0065] First shutter hole 7210 [0066] Second shutter blade 722 [0067] Second shutter hole 7220 [0068] Magnetic valve 723 [0069] Aperture hole 73 Ο 099102054 Form number Α 0101 15 Page / Total 23 pages 0992003980-0