Ϊ250372 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種投影鏡頭組，特別是關於一種投影 鏡頭組之反射器。 【先前技術】 在目前之投影系統中，不論是採用LCD(Liquid Crystal ^^splay)、LCOS(Liquid Crystal on Silicon) 、或是DLP(Digital Light Processing)等投影原理，投影鏡 碩組均是其中不可或缺的重要結構。在一投影系統中，光 經過穿透式或反射式的光調變裝置(light valve)後，需藉由 投影鏡頭組投射至螢幕成像，故投影鏡頭組之解析度及精 度均需符合投影系統之要求，以達到理想之投影效果。 投影鏡頭組一般係由複數片透鏡組成，如需使光線轉 折’則需搭配使用反射器。光線經由反射器改變路徑後將 再經過透鏡放大投射至螢幕，故若光路徑有些微偏差，經 過透鏡之放大，即可能出現成像模糊、無法對焦、位置偏 離、成像扭曲的結果。 如圖1所示’習知之投影鏡頭組1中，反射器2僅传、 固定於投影鏡頭組基座3上，而無任何調整裝置。亦即， 如圖2所示，反射器2本身的結構係包含一鏡片21及― 蓋板22，鏡片21係固定於蓋板22上。 如上所述’由於習知之反射器為固定式，而在設計與 加工的過程中可能存在誤差值，此一誤差可能係來自玻壤 1250372 鏡片與金屬底板加工或是反射器組裝於投影鏡頭組基座 日寸所造成，此誤差將使反射投影效果不如預期且在組合後 热補正辦法，如要勉強修正必須將之拆卸重新組裝，更何 況於拆瓜時不易判定誤差來源。因此，固定式反射器之精 密度要求高，加工費用相對增加，加上欲調整反射效果時 必須重新拆卸組裝等，均造成工時、成本之浪費。 爰因於此，發明人乃鑽研發明一種可調整反射器之結 構，經由簡單的操作方式可.快速補正反射器造成之誤差， 使反射投影效果更理想，同時能夠免除重新組裝、降低工 時成本及不良率之發生。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種能夠進行 調整、免除重新拆卸組裝、並降低投影鏡頭組不良率、進 而提高反射投影效果之投影鏡頭組及其反射器。 緣是，為達上述目的，本發明提供之反射器包含一蓋 板、至少一連結調整元件、一框架、以及一反射元件。其 中，反射元件係放置於框架中，而連結調整元件係將框架 連結至蓋板之一側，並可調整框架與蓋板之間隙。 為達上述目的，本發明更提供一種投影鏡頭組，其包 含一基座及一反射器。基座具有一通孔，而反射器包括一 蓋板、至少一連結調整元件、一框架、以及一反射元件。 其中，反射元件係放置於框架中，而連結調整元件係將框 架連結至盍板之一側，並可調整框架與蓋板之間隙，最後 1250372 蓋板組裝於基座之通孔上，使得框架及反射元件位於通孔 内。 承上所述，因依本發明之投影鏡頭組及其反射器具有 分離式的框架與蓋板，並係藉由至少一連結調整元件相 連，故連結調整元件可利用一點或多點模式調整反射元件 之角度以及反射元件與蓋板之間距，如此反射元件之多向 面變化加上前後位置調整，即可產生極佳之反射投影效 果。當投影鏡頭組組裝完成而投影效果不佳時，亦可利用 本反射器先進行微調，以免除拆卸投影鏡頭組並重新安裝 之繁複程序。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之反 射器及投影鏡頭組，其中相同的元件將以相同的參照符號 加以說明。 請參照圖3所示，依本發明較佳實施例之反射器4包 括一蓋板41、至少一連結調整元件42、一框架43以及一 反射元件44。反射元件44係放置於框架43中，連結調整 元件42係將框架43連結至蓋板41之一側，並可調整蓋 板41與框架43之間隙。在本實施例中係採用三個連結調 整元件42 (如圖3所示），連結調整元件42係為一螺絲， 而反射元件44係為一鏡片。 請參照圖4A，其顯示本發明較佳實施例之反射器未進 行調整前之剖面示意圖。在反射器4中，連結調整元件42 1250372 控制了蓋板41與框架43之間距，亦決定了蓋板41與反 射元件44之間距及角度，並且在蓋板41與框架43之間 隙中設置有一彈性元件45，在未進行調整前，蓋板41、 框架43與反射元件44均係呈平行狀態。在本較佳實施例 中，彈性元件45係為一彈簧，當然其亦可以為一彈片。 接著請參照圖4B，其顯示本發明較佳實施例之反射器 進行調整後之剖面示意圖。當連結調整元件42旋開使得 彈性元件45伸展、蓋板41與框架43之間隙變大時，反 射元件44亦隨之被框架43抬升，此時反射元件44與蓋 板41不再平行而形成一夾角，造成光線入射至反射元件 44之角度改變，使得反射之角度亦不同，故能夠達到修正 投影光線路徑之效果。在本較佳實施例中，係將一連結調 整元件42旋開，當然其亦可以旋開一或多個連結調整元 件，以達到多向面之調整效果。 以下係本發明之投影鏡頭組之較佳實施例，為使便於 理解，下述實施例中之符號係沿用與前一實施例中相同之 元件之符號來說明。 請參照圖5,其顯示依本發明較佳實施例之投影鏡頭 組5係包含一基座6以及一反射器4。其中，基座6具有 一通孔61，反射器4則包括一蓋板41、至少一連結調整 元件42、一框架43以及一反射元件44 (如圖3所示）。 反射元件44係放置於框架43中，連結調整元件42係將 框架43連結至蓋板41之一侧，並可調整蓋板41與框架 43間隙，在此間隙中並設有一彈性元件45 (如圖4A所 1250372 示）。最後反射器4是以蓋板41組裝於基座6之通孔61 上，使得框架43及反射元件44均位於通孔61内。在本 較佳實施例之投影鏡頭組中，連結調整元件42係為—螺 絲，反射元件44係為一鏡片，彈性元件μ係為一彈簧’，' 當然其亦可以為一彈片。 當反射投影效果不佳時，可對投影鏡頭組之反射器進 行調整，而相關凋整方式已於前一實施例中說明（請參考 圖4A及圖4B )，故在此不加贅述。 綜上所述，本發明之投影鏡頭組及其反射器能夠藉由 連結調整元件對於反射元件之位置及角度進行調整以補 正誤差’進而改善反射投影絲。當此反㈣安裝於投影 鏡頭組之基座後，減利料結娜元件進行微調，而不 需將反射器自基座上拆_，故確實能達到透過簡易操作即 有效改善反射投影效果之功效。 Μ謂⑽鱗難，轉為限制性者。任何未脫雜 ^明之精神與_，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 = = ====意圖 二：示依本發明較佳實施例之反射器示意圖； 圖4A顯示依本發明較 面示意圖 立闰· 知例之反射器調整前之剖 1250372 圖4B顯示依本發明較佳實施例之反射器調整後之剖 面示意圖；以及 圖5顯示依本發明較佳實施例之投影鏡頭組之剖面示 意圖。 元件符號說明： 1 投影鏡頭組 2 反射器 21 鏡片 22 蓋板 3 投影鏡頭組基座 4 反射器 41 蓋板 42 連結調整元件 43 框架 44 反射元件 45 彈性元件 5 投影鏡頭組 6 基座 61 通孔Ϊ250372 IX. Description of the Invention: [Technical Field] The present invention relates to a projection lens group, and more particularly to a reflector for a projection lens group. [Prior Art] In the current projection system, whether using LCD (Liquid Crystal ^^splay), LCOS (Liquid Crystal on Silicon), or DLP (Digital Light Processing) projection principles, projection mirrors are among them. An important structure that is indispensable. In a projection system, after passing through a transmissive or reflective light valve, the light is projected onto the screen by the projection lens group, so the resolution and accuracy of the projection lens group must conform to the projection system. The requirements to achieve the desired projection effect. The projection lens group is generally composed of a plurality of lenses. If the light needs to be turned, then a reflector is used. After the light changes its path through the reflector, it will be magnified and projected onto the screen through the lens. Therefore, if the light path is slightly deviated, the lens may be magnified, which may result in image blurring, inability to focus, positional deviation, and image distortion. In the conventional projection lens set 1 shown in Fig. 1, the reflector 2 is only transmitted and fixed to the projection lens group base 3 without any adjustment means. That is, as shown in Fig. 2, the structure of the reflector 2 itself includes a lens 21 and a cover 22, and the lens 21 is fixed to the cover 22. As mentioned above, 'because the conventional reflector is fixed, there may be error values during the design and processing. This error may come from the Folivia 1250372 lens and metal backplane processing or the reflector assembly on the projection lens base. This error will cause the reflection projection effect to be less than expected and the heat correction method after combination. If it is to be corrected, it must be disassembled and reassembled, not to mention the source of error when it is removed. Therefore, the precision of the fixed reflector is high, the processing cost is relatively increased, and the reshaping and assembly must be performed when the reflection effect is to be adjusted, which causes waste of labor and cost. Because of this, the inventor has invented a structure that can adjust the reflector, and can quickly correct the error caused by the reflector through a simple operation mode, so that the reflection projection effect is more ideal, and the reassembly and the labor cost can be eliminated. And the occurrence of non-performing rates. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a projection lens group and a reflector thereof which are capable of being adjusted, eliminating the need for reassembly and assembly, and reducing the defective ratio of the projection lens group, thereby improving the reflection projection effect. For the above purpose, the reflector provided by the present invention comprises a cover plate, at least one connection adjusting member, a frame, and a reflecting member. The reflective element is placed in the frame, and the connecting adjustment element connects the frame to one side of the cover and adjusts the gap between the frame and the cover. To achieve the above object, the present invention further provides a projection lens assembly including a base and a reflector. The base has a through hole, and the reflector includes a cover, at least one connection adjusting member, a frame, and a reflective member. Wherein, the reflective element is placed in the frame, and the connecting adjustment element is connected to one side of the seesaw, and the gap between the frame and the cover can be adjusted, and finally the 1250372 cover is assembled on the through hole of the base, so that the frame And the reflective element is located in the through hole. As described above, since the projection lens group and the reflector thereof according to the present invention have a separate frame and a cover plate and are connected by at least one connection adjusting member, the connection adjusting member can adjust the reflection by using one or more dot patterns. The angle of the component and the distance between the reflective element and the cover, such a multi-directional change of the reflective element plus front and rear position adjustment, can produce an excellent reflective projection effect. When the projection lens assembly is assembled and the projection effect is not good, the reflector can also be fine-tuned first to avoid complicated procedures for disassembling the projection lens group and reinstalling it. [Embodiment] A reflector and a projection lens set according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. Referring to Figure 3, a reflector 4 in accordance with a preferred embodiment of the present invention includes a cover 41, at least one attachment adjustment member 42, a frame 43 and a reflective member 44. The reflecting member 44 is placed in the frame 43, and the connecting adjusting member 42 connects the frame 43 to one side of the cover 41, and the gap between the cover 41 and the frame 43 can be adjusted. In the present embodiment, three coupling adjustment elements 42 (shown in Figure 3) are used. The connection adjustment element 42 is a screw and the reflective element 44 is a lens. Referring to Figure 4A, there is shown a cross-sectional view of the reflector of the preferred embodiment of the present invention before it is adjusted. In the reflector 4, the connection adjusting member 42 1250372 controls the distance between the cover 41 and the frame 43, and also determines the distance and angle between the cover 41 and the reflective member 44, and is provided in the gap between the cover 41 and the frame 43. The cover member 41, the frame 43 and the reflective member 44 are in a parallel state before the adjustment of the elastic member 45. In the preferred embodiment, the resilient member 45 is a spring, although it can also be a resilient piece. Referring next to Figure 4B, there is shown a cross-sectional view of the reflector of the preferred embodiment of the present invention. When the joint adjusting member 42 is unscrewed so that the elastic member 45 is extended and the gap between the cover 41 and the frame 43 is increased, the reflecting member 44 is also lifted by the frame 43, and the reflecting member 44 and the cover 41 are no longer parallel. At an angle, the angle at which light is incident on the reflective element 44 is changed, so that the angle of reflection is also different, so that the effect of correcting the projected light path can be achieved. In the preferred embodiment, a coupling adjustment element 42 is unscrewed. Of course, one or more connection adjustment elements can also be unscrewed to achieve a multi-directional adjustment effect. The following is a preferred embodiment of the projection lens assembly of the present invention. For ease of understanding, the symbols in the following embodiments are denoted by the same reference numerals as in the previous embodiment. Referring to FIG. 5, a projection lens assembly 5 according to a preferred embodiment of the present invention includes a base 6 and a reflector 4. The base 6 has a through hole 61, and the reflector 4 includes a cover 41, at least one connecting adjusting member 42, a frame 43, and a reflecting member 44 (shown in FIG. 3). The reflective member 44 is placed in the frame 43. The connecting adjustment member 42 connects the frame 43 to one side of the cover 41, and can adjust the gap between the cover 41 and the frame 43, and a resilient member 45 is disposed in the gap (eg Figure 12A shows 1250372). Finally, the reflector 4 is assembled on the through hole 61 of the base 6 by the cover 41 such that the frame 43 and the reflecting member 44 are both located in the through hole 61. In the projection lens assembly of the preferred embodiment, the coupling adjustment member 42 is a screw, the reflection member 44 is a lens, and the elastic member μ is a spring ', which of course may also be a spring. When the reflection projection effect is not good, the reflector of the projection lens group can be adjusted, and the relevant fading mode has been described in the previous embodiment (please refer to FIG. 4A and FIG. 4B), and thus no further description is provided here. In summary, the projection lens assembly of the present invention and its reflector can adjust the position and angle of the reflective element by the connection adjustment element to correct the error' to improve the reflective projection wire. When the reverse (4) is mounted on the base of the projection lens group, the component of the reduction material is finely adjusted, and the reflector is not removed from the base, so that the reflection projection effect can be effectively improved by simple operation. efficacy. It is said that (10) scales are difficult and become restrictive. Any changes or modifications to the spirit and _ without any modifications shall be included in the scope of the appended patent application. BRIEF DESCRIPTION OF THE DRAWINGS = = ==== Intent 2: A schematic diagram of a reflector according to a preferred embodiment of the present invention; FIG. 4A is a cross-sectional view of a reflector according to a preferred embodiment of the present invention. 4B is a cross-sectional view showing the adjustment of the reflector according to the preferred embodiment of the present invention; and FIG. 5 is a cross-sectional view showing the projection lens assembly in accordance with a preferred embodiment of the present invention. Symbol description: 1 Projection lens unit 2 Reflector 21 Lens 22 Cover 3 Projection lens unit base 4 Reflector 41 Cover 42 Connection adjustment element 43 Frame 44 Reflective element 45 Elastic element 5 Projection lens unit 6 Base 61 Through hole