200900832 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種投影鏡頭，特別是指一種内含可 變光圈模組的投影鏡頭。 【先前技術】 在現今投影機的投影鏡頭中，正在逐漸開發並採用一 些可變光圈裝置，用以控制通過該投影鏡頭的光通量；如 此’可以使該投影鏡頭投影和顯示出的畫面，具有較高的 晝面對比度，讓我們的眼睛感受到更逼真的畫面質感。 參閱圖1，是中華民國發明專利第125丨丨丨2號所揭示的 一立體剖視圖，該發明包含一投影鏡頭丨丨、一連接於該投 影鏡頭的支架12,及一設置於該支架12的擺動裝置13; 其中，該擺動裝置13包含一伸入且樞接於該投影鏡頭u的 遮光件131、一設置於該支架12的彈簧132、一兩端分別 連接於該遮光件131與彈簧132的連接件133,及一圍繞該 彈簧132與連接件133的線圈134。該發明利用導通該線圈 134的電迴路所產生一磁埸，磁吸該連接件133使其移動靠 近，並間接使該遮光件131由一第一位置擺動至一第二位 置，達到控制通過該投影鏡頭U光通量的目的；相反地， 如果將該線圈134的電迴路斷路，則會使該遮光件131擺 動回該第一位置。 在上述發明令，連接於該投影鏡頭n的支架12，及該 擺動裝置13中遮光件131的一部份、彈簧132、連接件 133與線圈134等各元件，均是外露於該投影鏡頭u，所以 5 200900832 當上述發明要設置在一投影系統的機殼内時，除了該投影 鏡頭11的設置空間之外，還需要額外的設置空間用以容納 上述外露於該投影鏡頭11的各元件，如此，造成了該投影 系統機殼需要預留較大的設置空間，才能裝設該投影鏡頭 11、支架12 ’及該擺動裝置13的問題。此外，分別位於該 遮光片131前後的一前群鏡片14與一後群鏡片15，都是採 用固定設計’無法實現光學變焦（Zooming)的功能。 【發明内容】 因此，本發明之一目的，即在提供一種將可變光圈模 組内藏以達到縮小所需設置空間之内含可變光圈模組的投 影鏡頭。 本發明之另一目的，即在提供一種可以變焦又不會干 涉可變光圈模組的驅動控制線組之内含可變光圈模組的投 影鏡頭。 於是’本發明内含可變光圈模組的投影鏡頭，包含一 第一鏡群、一可變光圈模組、一固定筒，及一迴轉筒；該 第一鏡群包括一光轴；該可變光圈模組是沿該光轴方向上 固設於該第一鏡群，並包括一具有—供光線通過之開放區 的基座、一設置於該基座並具有一移動件的驅動單元，及 連接於該移動件的遮光件，其中，該驅動單元更具有一 會驅動該移動件之驅動件，及-連接於該驅動件的驅動控 制線組，而當該移動件被驅動時，該遮光件改變遮閉該開 放區的面積；該固定筒是供該第一鏡群與可變光圏模組穿 設，並包括多數沿該光軸方向延伸的軸向溝，及一供該驅 6 200900832 動控制線組穿出的出線孔 忑坦轉诗是可轉動地套設於該 ::筒空括多數分别對應該等軸向溝的凸輪溝，及多 ^ 刀別穿過該凸輪溝與軸向溝並固設於該第-鏡群的凸輪 銷0 々本發明之功效在於：該可變光圈模組是内藏於該迴轉 靖與固定筒内’達到所需設置空間的縮小化；並且該可變 光圈模組的驅動控制線组可經由該固定筒的出線孔穿出， 使付進打變焦時不會干涉該驅動控制線組，確實能達到本 發明之目的。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之二個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示。 參閱圖2’是一立體分解圖，說明本發明内含可變光圈 模組的技影鏡頭2的一第一較佳實施例，既可以控制投射 光線通過時的光通量，又可以進行變焦；本發明投影鏡頭2 包含一第一鏡群3、一可變光圈模組4、一第二鏡群5、一 固疋筒6，及一迴轉筒7。 配合圖3,是一立體示意圖，該第一鏡群3包括一連接 座31、一由該連接座延伸的鏡筒32、三形成於該連接 座31的鎖固孔33、多數設置於該鏡筒32内的透鏡34,及 穿過該等透鏡34的光軸I;其中，該連接座31具有一概 200900832 呈扇形的缺口 311。 配合圖4、圖5，分別是該可變光圈模組4 一立體分解 圖與一立體組合圖’該可變光圈模組4沿該光轴I方向上鎖 β臾於該第一鏡群3的連接座31，並包括一基座41、一驅動 單元42、一遮光件43，及一上蓋44。其中，該基座41具 有一供光線通過的開放區411、一容置該遮光件43的設置 ' 槽412，及多數自該設置槽412 —底面凸出並供承載該遮光 r 件43的減阻滑軌413;在本實施例中，該開放區411是一 呈圓形的通孔。另外’該驅動單元42是設置於該基座41， 並包括一設置於該基座41的基礎塊421、一形成於該基礎 塊421上並沿一垂直於該光軸ϊ方向的軸向π沿伸的滑槽 422、一移動件423、一設置於該移動件423並與該滑槽 422相互配合的滑塊424、一連接於該基礎塊421的驅動件 425、一連接於該驅動件425的驅動控制線組426、一平行 該軸向II並被該驅動件425驅動的導螺桿427、一設置於該 V 基座41並遠離該驅動件425的感應器428，及一連接於該 感應器428的感應器線組429。其中，該移動件423且有一 與該導螺桿427相螺合並供該滑塊424設置的螺母塊451、 一將該螺母塊451與該遮光件43相連接的聯結塊452，及 —設置於該螺母塊451並可觸發該感應器428的觸發塊453 。在本實施例中’該驅動件425是一可控制轉動角度的步 進馬達（Step Motor)’·另外，該感應器428是一種利用光遮 斷觸發的感應器，也可以是一種利用觸碰觸發的感 另外，該遮光件43是連接於該移動件4幻之聯結塊 8 200900832 452並設置於該設置槽412中，該遮光件43包括一呈圓弧 形的遮光緣431。而該上蓋44是一具有不遮閉該基座41開 放區411形狀的薄片，覆蓋該設置槽412並固定於該基座 41，使該遮光件43被限位於該設置槽412内。 該第二鏡群5與第一鏡群3沿該光轴I方向上分別位於 該可變光圈模組4的兩側，該第二鏡群5包括一鏡筒51、 多數設置於該鏡筒51内的透鏡52，及三形成於該鏡筒52 的鎖固孔53。 參閱圖2、圖6,其中圖6是該固定筒6的一立體示意 圖，該固定筒6是供該第一、第二鏡群3、5與可變光圈模 組4穿設，並包括一供該迴轉筒7套設的周壁61、一由該 周壁61的一周緣向該光軸z延伸的端壁62、三沿該光軸j 方向延伸的軸向溝63、三分別沿徑向凸出的限位件64，及 一對應該可變光圈模組4並供該驅動控制線組426、該感應 器線組429穿出的出線孔65 ;其中，每一限位件64是沿一 圓周方向上分別設置於相鄰二軸向溝63之間，另外，該出 線孔65疋沿該圓周方向上以一間距D位於其中一限位件64 一側。 配合圖7，是該迴轉筒7的一展開示意圖，該迴轉筒 j可轉動地套設於該固定筒6外，並包括二分別對應該負 一、第二鏡群3、5的凸輪溝組71、72、多數分別穿過該£ 輪溝組71、72與軸向溝63並固設於該第一、第二鏡群3、 5的凸輪銷73、74、—對應該出線孔65並位於該二凸^ 組71、72之間的出線溝75，及—限位溝組％。其中，名 200900832 -溝’A 71、72具有二道分佈在該圓周方向上並螺旋延 伸的凸輪溝711、721，而較佳的設計是讓每—組輪溝組Η 、72的該等凸輪溝爪、721在該圓周方向上呈平均地分佈 第一限位溝761與一第二限位溝762 ;且該第— 2外，該出線溝75是沿該圓周方向直線延伸並供該驅動 工1線組426、感應器線組429穿出；該限位溝組％且有 分別在該出線溝75的-長向兩側並沿該圓周方向直線延伸 .一 rrr / U ▲，且钱弟_、第二 限位溝761、762各具有一遠離該出線溝75的止動端部^ 、川。前述三個限位件64是分別穿設在該出線溝75、第 一限位溝761，及第二限位溝762 2甲，使該迴轉筒7獲得軸 向限位’僅能相對該固Μ 6原地轉動。該迴轉筒7的一 :動行程S是藉由該二止動端部加、崩分別受該二限位 件64止動而獲得控制；而為 芍了不干涉該驅動控制線組426 、感應器線組429穿出，該出線溝75的長度至少需要大於 該轉動行程S加上該間距D的長度。但在另-種變化例中 ’若是取消該出線溝75中的限仂杜f 限位件64，則該出線溝75的 長度，、要足以吸收該轉動行程S即可。 值得說明的是，該迴轉箇7 、锝商7的轉動行程s 該限位溝組76來控制，例如精加卫控制該等凸輪溝71 川的長度’直接與該等凸輪鎖73、74進行止動 外，在本發明甲需要移動的鐘雜叙曰 为 ’ 切的鏡群數量如果減少或增加 則對應的凸輪溝組73、74將合山θ丄 、一 會由現有的二組減少成一組， 或者增加成三組，或者更多組。 參閱圖8,是本發明的一 立體組合圖：說明本發明内含 10 200900832 可變光圈模.讀^鏡頭2的_動控制線组426、感應器 線組429穿出並外露於該投影鏡頭2的狀維。 接著說明該可變光S模組4的作動機;;及達成功效： >閱圖9是―别視不意圖’當本發明投影鏡頭2被控 制讓最大光通量通過時，該驅動件奶將驅動該導螺桿427 繞該軸向Π朝一方向轉動，使得該移動件423沿該軸向U 逐漸遠離該驅動件425，而該遮光件43同時也會被帶動而 該軸向II直線移動’進而逐漸減少該開放區川被遮閉 的面積，如此’直到該移動# 423靠近該感測器似並將 該觸發塊453伸人該感測器似巾，讓該感測器428被觸 發並發出訊號，錢得該驅動件奶停止驅動為止；此時 ，該遮光件43的圓弧形遮光緣431已離開該開放區411， 也就是該遮光件43完全無遮閉到該開放區4ιι，如此本發 明投影鏡頭2達到—可供最大光通量通過的狀態。 參閱圖1〇，是一前視示意圖，如果本發明投影鏡頭2 被控制讓最小光通量通過時，該驅㈣425將驅動該導螺 桿427繞該軸向Π朝另-方向轉動，整個移動件423將如 同上段所述’帶動該遮光件43沿該轴向π直線移動用以逐 漸增加該開放^ 411被遮閉的面積；如此’直到該移動件 423趨近該驅動件425且不能再靠近為止。此時，該遮光件 43的圓弧形遮光緣431進入該開放區4U，並且該遮光件 43已遮閉該開放區411的大部份面積，如此本發明投影鏡 頭2達到-可供最小光通量通過的狀態。值得說明的是， 當欲控制本發明投影鏡帛2成為介於最大、最小兩種光通 11 200900832 量之間的任何一種光通量時，可利用控制該驅動件425的 轉動角度，讓該移動件423與遮光件43停在所需要的位置 上，達成所需的光通量。 最後說明由該出線孔65與出線溝75穿出的該驅動控 制線組426、感應器線組429,如何能在該迴轉筒7旋轉以 造成該投影鏡頭2改變焦距時，不被該迴轉筒7干涉或甚 至切斷： 參閱圖2、圖8、® 11，其中圖^是―剖面示意圖， 該驅動控制線組426、感應器線組429是依序由該固定筒6 的出線孔65、該迴轉筒7的出線溝75穿出，使得可由投影 鏡頭2外部透過該等線組426、429直接控制該可變光圈模 組4 ’達到變化通光量的目的。當該迴轉筒7繞該光軸】旋 轉時，使該第-、第二鏡群3、5會因該等凸輪溝組71、72 的推動而沿該光軸U向移動，並達到使該投影鏡頭2改變 焦距的功效，而該可變光圈模纟且4會隨著該第一鏡群3 一 體連動。 麥閲圖7之實線及 丁閛一〜—網似團1 1的 剖面示意圖，說明當該迴轉筒7繞著該光軸！朝—逆時針方 向旋轉’讀造成該投㈣頭2改變該時，該迴轉筒7 只能旋轉到當該第-限位溝761的止動端冑加頂住配合 的限位件64為止，同時，讓等鐘链1 ^ , 群3、5也會因配合的凸 輪溝組71、72而沿該光軸j朝前 動，最後，在該第—限 75 : 763的限位下，該迴轉筒7的出線溝 旋轉後仍不會遮蓋該固定筒6的出線孔65，使得該藤動 12 200900832 控制線組426、感應器線組4 2 9的穿出不會產生干涉或被切 斷的問題。 參閱圖7之虛線及圖13,其中圖13是一類似圖^的 剖面示意圖’說明當該迴轉筒7繞著該光轴Σ朝—順時針方 向旋轉，以便造成該投影鏡頭2改變焦距時，該迴轉筒7 只能旋轉到當該第二限位溝762的止動端冑⑹頂住配合 的限位件64為止，同時，該等鏡群3、5也會因配合的: 輪溝組7卜72而沿該光轴ί朝後移動；最後，在該第二限 位溝762的止動端部764的限位下，該迴轉筒7的出線溝 75因為有足夠的長度（至少大於該轉動行程§加上間距D的 長度）’旋轉後仍不會遮蓋該固定筒6的出線孔65，使得該 驅動控制線組426、感應器線組429的穿出不會產生干涉或 被切斷的問題。 綜合上述各段，本發明内含可變光圈模組的投影鏡頭2 具有下列的優點： 一、 可將可變光圈模組4内藏以達到縮小所需設置空 間：本發明投影鏡頭2將該可變光圈模組4設置於該迴轉 筒7與固定筒6内，並利用該第一鏡群3的缺口 3ιι、該出 線孔65、及出線溝75，將該可變光圈模紐4的該等線組 426、429依序穿出，達成將可變光圈模組4内藏及縮小 本發明投影鏡頭2所需設置空間的目的。 二、 可進行變焦又不會干涉可變光圈模組4的該等線 組426、429 :當該迴轉筒7繞該光軸j旋轉時，使該第一 、第二鏡群3、5會因該等凸輪溝組71、72的推動而沿該 13 200900832 光轴i方向移動，並達到使該投影鏡頭2改變焦距的功效； 而且利用第一、第二限位溝761、762具有的止動端部⑹ 、764’使該迴轉筒7的出線溝75在經過該迴轉筒7旋轉 之後’仍不會遮蓋該固定筒6的出線孔65，使該驅動控制 線組426、感應器線組429穿出不會產生干涉或被切斷的問 題。 三、可以控制多段的光通量：本發明投影鏡頭2的可 變光圈模组4利用該驅動件425驅動該移動件423，並同時 帶動該遮糾43沿該軸向II直線移動，可使得該遮光件43 的遮光緣431逐漸進入或離開該開放區411，用以改變該開 放區4U被該遮光件43遮閉面積的大小，使剩餘未被遮^ 的區域通過不同的光通量；㈣話說，可以利用控制該驅 動件425的轉動角度，讓該移動件423與遮光件43停在所 需要的位置上，形成該開放區411有不同的面積未被遮閉， 通過所需的光通量，達成多段光通量的控制。 參閲圖14、圖15，分別是一立體示意圖及一立體組合 圖’說明本發明内含可變光圈模組的投影鏡頭2的一第二 較佳實施例，其中與該第一較佳實施例不同之處在於：該 固定筒6的出線孔65是被設計位於該端壁62上，如此， 該驅動控制線組426、感應器線組429可以直接由位於該端 壁62上的出線孔65穿出；另外，該迴轉筒7則不必具有 —供該等控制線組426、429穿出的出線溝75，而可以設計 改變成一輔助限位溝765用以協助該迴轉筒7獲得軸向限 位。如此’確實可以讓本發明内含可變光圈模組的投影鏡 14 200900832 頭2達到可變焦又不會干涉該等控制線組426、429的目的 惟以上所述者’僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是中華民國發明專利第1251112號所揭示的一立 體剖視圖； 圖2疋一立體分解圖，說明本發明内含可變光圈模組 的才又景> 鏡頭之一第一較佳實施例； 圖3是一立體示意圖，說明該第一較佳實施例中一第 一鏡群與一可變光圈模組； 圖4疋該第一較佳實施例中的可變光圈模組之—立體 分解圖；200900832 IX. Description of the Invention: [Technical Field] The present invention relates to a projection lens, and more particularly to a projection lens including a variable aperture module. [Prior Art] In the projection lens of today's projectors, some variable aperture devices are being developed and used to control the luminous flux passing through the projection lens; thus, the projection lens can be projected and displayed. The high contrast of the face makes our eyes feel more realistic. 1 is a perspective cross-sectional view of the Republic of China Patent No. 125丨丨丨2, which includes a projection lens, a bracket 12 connected to the projection lens, and a bracket 12 disposed on the bracket 12. The swinging device 13 includes a light blocking member 131 extending into the pivoting lens u, a spring 132 disposed on the bracket 12, and two ends connected to the light blocking member 131 and the spring 132 respectively. The connecting member 133 and a coil 134 surrounding the spring 132 and the connecting member 133. The invention utilizes an electrical circuit that turns on the coil 134 to generate a magnetic pole, magnetically attracts the connecting member 133 to move it closer, and indirectly causes the light blocking member 131 to swing from a first position to a second position to achieve control. The purpose of the projection lens U luminous flux; conversely, if the electrical circuit of the coil 134 is broken, the light blocking member 131 is swung back to the first position. In the above invention, the bracket 12 connected to the projection lens n, and a part of the shading device 131 in the swinging device 13, the spring 132, the connecting member 133 and the coil 134 are exposed to the projection lens u. , so 5 200900832 When the above invention is to be disposed in the casing of a projection system, in addition to the installation space of the projection lens 11, an additional installation space is required for accommodating the components exposed to the projection lens 11, As a result, the projection system casing needs to reserve a large installation space, so that the projection lens 11, the bracket 12', and the swinging device 13 can be installed. Further, a front group lens 14 and a rear group lens 15 respectively located before and after the light shielding sheet 131 have a function of "fixing design" that cannot achieve optical zooming. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a projection lens including a variable aperture module that incorporates a variable aperture module to reduce the required installation space. Another object of the present invention is to provide a projection lens including a variable aperture module in a drive control line group that can zoom and does not interfere with the variable aperture module. Thus, the projection lens including the variable aperture module of the present invention comprises a first mirror group, a variable aperture module, a fixed cylinder, and a rotary cylinder; the first mirror group includes an optical axis; The variable aperture module is fixed to the first mirror group along the optical axis direction, and includes a base having an open area for light to pass through, a driving unit disposed on the base and having a moving member. And a light shielding member connected to the moving member, wherein the driving unit further has a driving member that drives the moving member, and a driving control wire group connected to the driving member, and when the moving member is driven, the The light blocking member changes the area of the open area; the fixed tube is for the first mirror group and the iris module to be inserted, and includes a plurality of axial grooves extending along the optical axis direction, and one for the drive 6 200900832 The outlet hole of the dynamic control line group is rotatably sleeved on the:: the hollow of the cylinder is respectively corresponding to the cam groove corresponding to the axial groove, and the multi-knife passes through the cam The groove and the axial groove are fixed to the cam pin 0 of the first mirror group 々 the effect of the invention The variable aperture module is built into the rotation and the fixed cylinder to reduce the required installation space; and the drive control line group of the variable aperture module can pass through the outlet hole of the fixed cylinder The purpose of the present invention can be achieved by wearing out so that the drive control line group is not interfered when the zoom is applied. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. 2 is an exploded perspective view illustrating a first preferred embodiment of the technical lens 2 including the iris diaphragm module of the present invention, which can control the luminous flux when the projected light passes through, and can perform zooming; The projection lens 2 includes a first mirror group 3, a variable aperture module 4, a second mirror group 5, a fixed cylinder 6, and a rotary cylinder 7. 3 is a perspective view, the first mirror group 3 includes a connecting base 31, a lens barrel 32 extending from the connecting seat, and three locking holes 33 formed in the connecting seat 31, and most of the mirror holes 33 are disposed on the mirror. The lens 34 in the barrel 32, and the optical axis I passing through the lenses 34; wherein the connector 31 has a notch 311 which is fan-shaped in 200900832. 4 and 5, respectively, an isometric exploded view of the variable aperture module 4 and a stereoscopic combination diagram. The variable aperture module 4 is locked in the direction of the optical axis I to the first mirror group 3. The connecting base 31 includes a base 41, a driving unit 42, a light blocking member 43, and an upper cover 44. The pedestal 41 has an open area 411 for allowing light to pass through, an arrangement 'slot 412 for accommodating the light-shielding member 43, and a plurality of protrusions from the bottom surface of the installation groove 412 for carrying the light-shielding member 43. The sliding rail 413; in the embodiment, the opening region 411 is a circular through hole. In addition, the driving unit 42 is disposed on the base 41 and includes a base block 421 disposed on the base 41, and is formed on the base block 421 and along an axial direction perpendicular to the optical axis π. a sliding block 422, a moving member 423, a slider 424 disposed on the moving member 423 and cooperating with the sliding slot 422, a driving member 425 connected to the base block 421, and a connecting member a drive control wire set 426 of 425, a lead screw 427 parallel to the axial direction II and driven by the driving member 425, a sensor 428 disposed on the V base 41 and away from the driving member 425, and a connection thereto Sensor line set 429 of inductor 428. The moving member 423 has a nut block 451 which is screwed with the lead screw 427 for the slider 424, a connecting block 452 for connecting the nut block 451 to the blocking member 43, and The nut block 451 can trigger the trigger block 453 of the inductor 428. In the present embodiment, the driving member 425 is a stepping motor that can control the rotation angle. In addition, the sensor 428 is a sensor that utilizes a light interruption trigger, and can also be a touch. In addition, the light-shielding member 43 is connected to the movable member 4, and is disposed in the setting groove 412. The light-shielding member 43 includes a light-shielding edge 431 having a circular arc shape. The upper cover 44 is a sheet having a shape that does not cover the opening area 411 of the base 41, and covers the mounting groove 412 and is fixed to the base 41 so that the light blocking member 43 is confined in the setting groove 412. The second lens group 5 and the first lens group 3 are respectively located on opposite sides of the variable aperture module 4 along the optical axis I. The second lens group 5 includes a lens barrel 51, and most of the lens groups are disposed on the lens barrel. The lens 52 and the third in the 51 are formed in the locking hole 53 of the lens barrel 52. Referring to FIG. 2 and FIG. 6 , FIG. 6 is a perspective view of the fixing cylinder 6 . The fixing cylinder 6 is provided for the first and second mirror groups 3 and 5 and the iris diaphragm module 4 , and includes a a peripheral wall 61 for the rotary cylinder 7 to be sleeved, an end wall 62 extending from the peripheral edge of the peripheral wall 61 toward the optical axis z, and three axial grooves 63 and three extending in the direction of the optical axis j are respectively convex in the radial direction. The limiting member 64 and a pair of outlet apertures 65 for the variable aperture module 4 and for the driving control line group 426 and the inductor wire group 429; wherein each limiting member 64 is along A circumferential direction is respectively disposed between the adjacent two axial grooves 63. In addition, the outlet holes 65 are located on one of the limiting members 64 at a distance D along the circumferential direction. FIG. 7 is a schematic exploded view of the rotary cylinder 7. The rotary cylinder j is rotatably sleeved outside the fixed cylinder 6, and includes two cam groove groups respectively corresponding to the first and second mirror groups 3 and 5. 71, 72, a plurality of cam pins 73, 74 respectively passing through the groove group 71, 72 and the axial groove 63 and fixed to the first and second mirror groups 3, 5, corresponding to the outlet hole 65 And the outlet groove 75 between the two convex groups 71, 72, and the limit groove group %. Wherein, the name 200900832 - the groove 'A 71, 72 has two cam grooves 711, 721 which are distributed in the circumferential direction and spirally extended, and the preferred design is to make the cams of each group of the groove groups 72, 72 The groove claws 721 are evenly distributed in the circumferential direction with the first limiting groove 761 and the second limiting groove 762; and the second groove, the outlet groove 75 extends straight along the circumferential direction and is provided for The driver 1 wire group 426 and the sensor wire group 429 are pierced; the limit groove group % has a straight line extending along the circumferential direction of the outlet groove 75 and extending along the circumferential direction. A rrr / U ▲, And the younger brothers _, the second limit grooves 761, 762 each have a stop end ^, Chuan away from the outlet groove 75. The three limiting members 64 are respectively disposed in the outlet groove 75, the first limiting groove 761, and the second limiting groove 762 2A, so that the rotating barrel 7 obtains an axial limit 'only relative to the Solid Μ 6 rotates in place. A movement stroke S of the rotary cylinder 7 is controlled by the two stop ends being added and collapsed by the two limit members 64; and the drive control line group 426 is not interfered with. The wire set 429 is threaded out, and the length of the outlet groove 75 needs to be at least greater than the length of the rotation stroke S plus the spacing D. However, in another variation, if the limit limit member 64 in the outlet groove 75 is canceled, the length of the outlet groove 75 is sufficient to absorb the rotation stroke S. It should be noted that the rotation trajectory 7 and the rotation stroke s of the hopper 7 are controlled by the limit groove group 76, for example, the length of the control cam groove 71 is directly controlled with the cam locks 73 and 74. In addition to the stop, in the case of the present invention, the number of mirror groups to be moved is reduced. If the number of mirror groups is reduced or increased, the corresponding cam groove groups 73 and 74 will be merged into one, and one will be reduced from the existing two groups. Group, or add to three groups, or more groups. Referring to Figure 8, there is shown a three-dimensional combination of the present invention: the invention includes a 10 200900832 variable aperture mode. The control unit set 426 of the lens 2 is exposed and exposed to the projection lens. 2 shape dimension. Next, the operation of the variable light S module 4 will be described; and the effect will be achieved: > Figure 9 is "not to be intent". When the projection lens 2 of the present invention is controlled to allow the maximum luminous flux to pass, the driver will The lead screw 427 is driven to rotate in a direction about the axial direction, so that the moving member 423 is gradually away from the driving member 425 along the axial direction U, and the light blocking member 43 is also driven at the same time and the axial direction is linearly moved. Gradually reducing the area of the open area where the area is blocked, such that 'until the movement # 423 is close to the sensor and the trigger block 453 is extended to the sensor, so that the sensor 428 is triggered and issued The signal, the money, the drive piece of milk stops driving; at this time, the arc-shaped light-shielding edge 431 of the light-shielding member 43 has left the open area 411, that is, the light-shielding member 43 is completely unobstructed to the open area 4, so The projection lens 2 of the present invention achieves a state in which the maximum luminous flux can pass. Referring to FIG. 1A, which is a front view, if the projection lens 2 of the present invention is controlled to pass the minimum luminous flux, the driving (four) 425 will drive the lead screw 427 to rotate in the other direction about the axial direction, and the entire moving member 423 will As shown in the previous paragraph, 'the light-shielding member 43 is moved linearly along the axial direction to gradually increase the area in which the opening 411 is blocked; thus' until the moving member 423 approaches the driving member 425 and cannot be approached again. At this time, the arc-shaped light-shielding edge 431 of the light-shielding member 43 enters the open area 4U, and the light-shielding member 43 has blocked most of the area of the open area 411, so that the projection lens 2 of the present invention reaches the minimum light flux. Passed state. It should be noted that when the projection mirror 本 2 of the present invention is to be any kind of luminous flux between the maximum and minimum optical fluxes 11 200900832, the moving angle can be controlled by controlling the rotation angle of the driving member 425. The 423 and the light blocking member 43 are stopped at the desired position to achieve the desired luminous flux. Finally, how the driving control line group 426 and the sensor wire group 429 that are passed through the outlet hole 65 and the outlet groove 75 can be rotated when the rotating cylinder 7 is rotated to cause the projection lens 2 to change the focal length. The revolving cylinder 7 interferes or even cuts: Referring to Figures 2, 8, and 11, 11, wherein Fig. 2 is a schematic cross-sectional view, the driving control wire group 426 and the sensor wire group 429 are sequentially routed from the fixed cylinder 6. The hole 65 and the outlet groove 75 of the rotary cylinder 7 are pierced so that the variable aperture module 4' can be directly controlled by the outside of the projection lens 2 to achieve the purpose of varying the amount of light passing through the line groups 426 and 429. When the rotary cylinder 7 rotates about the optical axis, the first and second mirror groups 3, 5 are moved along the optical axis U by the pushing of the cam groove groups 71, 72, and the The projection lens 2 changes the effect of the focal length, and the variable aperture mode 4 and the first mirror group 3 are integrally linked. The cross-sectional view of the solid line of Figure 7 and Ding Yiyi~-net-like group 1 1 illustrates that the revolving cylinder 7 is around the optical axis! Rotating in the counterclockwise direction reads the head (the head) 2 changes, the revolving cylinder 7 can only be rotated until the stop end of the first limiting groove 761 is pressed against the matching limiting member 64. At the same time, the equal-chain chain 1 ^, the groups 3, 5 will also move forward along the optical axis j due to the matched cam groove groups 71, 72, and finally, under the limit of the first limit 75: 763, After the outlet groove of the rotary cylinder 7 rotates, the outlet hole 65 of the fixed cylinder 6 is not covered, so that the penetrating 12 200900832 control line group 426 and the sensor wire group 4 29 are not interfered or Cut off the problem. Referring to the broken line of FIG. 7 and FIG. 13, FIG. 13 is a schematic cross-sectional view of FIG. 13 illustrating the rotation of the rotary cylinder 7 about the optical axis toward the clockwise direction to cause the projection lens 2 to change the focal length. The revolving cylinder 7 can only be rotated until the stopping end 胄 (6) of the second limiting groove 762 bears against the engaging limiting member 64, and at the same time, the mirror groups 3, 5 are also matched by: the groove group 7b 72 and move backward along the optical axis ί; finally, under the limit of the stop end 764 of the second limiting groove 762, the outlet groove 75 of the rotary cylinder 7 has a sufficient length (at least More than the rotation stroke § plus the length of the spacing D) 'the outlet hole 65 of the fixing cylinder 6 is not covered after the rotation, so that the driving control wire group 426 and the sensor wire group 429 are not interfered or The problem of being cut off. In combination with the above paragraphs, the projection lens 2 including the variable aperture module of the present invention has the following advantages: 1. The variable aperture module 4 can be built in to reduce the required installation space: the projection lens 2 of the present invention will The iris diaphragm module 4 is disposed in the rotating cylinder 7 and the fixed cylinder 6, and uses the notch 3 ιι of the first mirror group 3, the outlet hole 65, and the outlet groove 75 to apply the iris module 4 The sets of lines 426 and 429 are sequentially passed out, and the purpose of enclosing and reducing the required installation space of the projection lens 2 of the present invention is achieved. 2. The line sets 426, 429 of the variable aperture module 4 can be zoomed without interfering with the first and second mirror groups 3, 5 when the rotary tube 7 is rotated about the optical axis j. Because of the pushing of the cam groove groups 71, 72, the optical axis i is moved along the direction of the optical axis i of 200900832, and the effect of changing the focal length of the projection lens 2 is achieved; and the first and second limiting grooves 761, 762 are used. The driving end portion (6), 764' causes the outlet groove 75 of the rotating cylinder 7 to not cover the outlet hole 65 of the fixed cylinder 6 after being rotated by the rotating cylinder 7, so that the driving control line group 426 and the inductor The wire set 429 is pierced without problems of interference or being cut. 3. The multi-segment luminous flux can be controlled: the variable aperture module 4 of the projection lens 2 of the present invention drives the moving member 423 by the driving member 425, and simultaneously drives the shielding 43 to move along the axial direction II, which can make the shading The light-shielding edge 431 of the piece 43 gradually enters or leaves the open area 411 for changing the size of the area of the open area 4U blocked by the light-shielding member 43 so that the remaining uncovered area passes through different luminous fluxes; (4) By controlling the rotation angle of the driving member 425, the moving member 423 and the light shielding member 43 are stopped at a desired position, and the open area 411 is formed to have different areas without being blocked, and the multi-segment luminous flux is achieved by the required luminous flux. control. 14 and FIG. 15 are respectively a perspective view and a perspective view of a second preferred embodiment of the projection lens 2 including the variable aperture module of the present invention, wherein the first preferred embodiment The difference is that the outlet hole 65 of the fixing cylinder 6 is designed on the end wall 62. Thus, the driving control wire group 426 and the sensor wire group 429 can be directly disposed on the end wall 62. The wire hole 65 is pierced; in addition, the rotating cylinder 7 does not have to have the outlet groove 75 for the control wire groups 426, 429 to pass through, and can be designed to be changed into an auxiliary limiting groove 765 for assisting the rotary cylinder 7 Obtain an axial limit. Thus, it is indeed possible for the projection lens 14 200900832 of the present invention to have a variable aperture module to achieve zooming without interfering with the control line groups 426, 429, but the above is only a comparison of the present invention. The present invention is not limited by the scope of the invention, and the simple equivalent changes and modifications made by the invention in the scope of the invention and the scope of the invention are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective cross-sectional view of the Republic of China Patent No. 1251112; FIG. 2 is an exploded perspective view showing one of the lenses of the present invention including a variable aperture module. FIG. 3 is a perspective view showing a first mirror group and a variable aperture module in the first preferred embodiment; FIG. 4 is variable in the first preferred embodiment. Aperture exploded view of the aperture module;
V 圖5是該第一較佳實施例中的可變光圈模組之一立體 組合圖； 圖6疋該第-較佳實施例中—固定筒的—立體示意圖 圖7是該第-較佳實施例中—迴轉筒的一展開示意圖 丁入丨土聚々也1夕I』 ―版組合圖， 圖9是一前視示意圖，說 勒杜偽A , A 況明該第—較佳實施例中一移 動件與一遮光件被控制在一最 八尤逋量通過的狀態； 15 200900832 圖10疋一前視示意圖’說明該第一較佳實施例中該移 動件與遮光件被控制在__最小光通量通過的狀態； .圖11是/〇圖8中之割面線11-11所取的剖面示意圖 > 圖12疋一類似圖u的剖面示意圖，說明該第一較佳實 包例中的迴轉筒朝-逆時針方向旋轉至_止動狀態； 圖13是一類似圖丨丨的剖面示意圖，說明該第一較佳實 施例中的迴轉筒朝一順時針方向旋轉至一止動狀態； 圖14是一立體示意圖，說明本發明内含可變光圈模組 、投和鏡頭之一第一較佳實施例；及 圖15是該第二較佳實施例的一立體組合圖。FIG. 5 is a perspective assembled view of the variable aperture module of the first preferred embodiment; FIG. 6 is a perspective view of the first embodiment of the present invention. FIG. In the embodiment, an unfolded schematic view of the rotary cylinder is incorporated into the 丨 々 々 々 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 The first moving part and the one shading part are controlled to be in a state of being the most versatile; 15 200900832 FIG. 10 is a front view schematically illustrating that the moving part and the shading part are controlled in the first preferred embodiment. _The state in which the minimum luminous flux passes; Fig. 11 is a schematic cross-sectional view taken from the cut line 11-11 in Fig. 8; Fig. 12 is a cross-sectional view similar to Fig. u, illustrating the first preferred embodiment The revolving cylinder rotates in the counterclockwise direction to the _stop state; FIG. 13 is a cross-sectional view similar to the figure, illustrating the rotation of the revolving cylinder in the first preferred embodiment in a clockwise direction to a stop state Figure 14 is a perspective view showing the present invention including a variable aperture module, a projection lens The first preferred embodiment; and FIG. 15 of the second preferred embodiment is a perspective view of the combination embodiment of FIG.
V 16 200900832 【主要元件符號說明】 2 ..........投影鏡頭 3 ..........第一鏡群 31 .........連接座 311 .......缺口 32 .........鏡筒 3 3··.......鎖固孔 34.........透鏡 4 ..........可變光圈模組 41 .........基座 411 .......開放區 412 .......設置槽 413 .......減阻滑軌 42 .........驅動單元 421 .......基礎塊 422 .......滑槽 423 .......移動件 424 .......滑塊 425 .......驅動件 426 .......驅動控制線組 427 .......導螺桿 428 .......感應器 429 .......感應器線組 43 ..............遮光件 431..........遮光緣 44.........上蓋 451 .......螺母塊 452 .......聯結塊 453 .......觸發塊 5 ..........第二鏡群 51 .........鏡筒 52 .........透鏡 53 .........鎖固孔 6 ..........固定筒 61 .........周壁 62 .........端壁 63 .........軸向溝 64 .........限位件 65 .........出線孔 7 ..........迴轉筒 71、72 ··凸輪溝組 711、721·凸輪溝 73、74 ··凸輪銷 75 .........出線溝 76 .........限位溝組 761 .......第一限位溝 762 .......第二限位溝 17 200900832 763、 764止動端部 II….· .....軸向 765 · ……輔助限位溝 S ••…轉動行程 I••… ......光轴 D···.· ••…間距 18V 16 200900832 [Description of main component symbols] 2 .......... Projection lens 3 .......... First mirror group 31 ......... Connector 311 .......notch 32 .........lens barrel 3 3··.......locking hole 34.........lens 4 .... ... variable aperture module 41 ......... base 411 .... open area 412 .... set slot 413 ... .Reducing slide rail 42 .... drive unit 421 . . . base block 422 . . . chute 423 .... moving member 424 .. ..... Slider 425 . . . drive member 426 . . . drive control line set 427 . . . lead screw 428 ... ... sensor 429 .......inductor wire set 43..............shading member 431..........shading edge 44........ .Upper cover 451 . . . nut block 452 . . . coupling block 453 . . . trigger block 5 .......... second mirror group 51 .. . . . lens barrel 52 ......... lens 53 ... ... locking hole 6 .......... fixed tube 61 ... ...circle wall 62 .........end wall 63 ......... axial groove 64 ... ... limit member 65 .... ..... outlet hole 7 .......... revolving cylinder 71, 72 · · cam groove group 711, 721 · cam groove 73, 74 · · cam pin 75 .... .. Outlet ditch 76....... ..limit groove group 761 .......first limit groove 762 .... second limit groove 17 200900832 763, 764 stop end II..... ..... Axial 765 · ...... Auxiliary Limit Groove S ••...Rotary Stroke I••... ...... Optical Axis D······••... Spacing 18