1267687 九、發明說明： ί發明所屬之技術領域] 本發明係有關於一種可抑制投影顯示裝置產生雜散光 之方法及可抑制雜散光產生之積分柱結構者。 ί先前技術 按$目前一般市面上常見之投影顯示裝置$係依其所 具有之不同投影光學裝置$分別為具穿透式液晶面板（L C D )之投影顯示裝置、具反射式數位微鏡元件（Digital Micro Device，簡稱DMD )之投影顯示裝置、具反射式 單晶矽面板（LCOS)之投影顯示裝置等三種，其中： 讀參閱第六圖所示，其係為一種具穿透式液晶面板 (L C D)之投影顯示裝置的系統示意圖，其主要係藉由 將一光源（1 0 )所產生之照明光束（A h經一拋物線画 面狀之反射鏡（1 1 )反射通過一第一聚光透鏡組（1 2 以將該光束（A)聚集至一色輪（1 3)，藉由該色輪（1 3 )之紅色、綠色、藍色濾光鏡依序攔截該光束（A ) 9以 將其轉換成有色光柬（A 1 )，然後使其通過一中空之積分 柱（2 0 )以使該有色光束（A 1 )產生均勻化效果，之 後再依序使其經由一第二聚光透鏡組（1 4 )、一光欄（1 5)及一第三聚光透鏡組（1 6)等之調整9再使其投射 至一投影光學裝置（1 了>即穿透式液晶面板$最後再使 該投影光學裝置（1 7)之影像經一成像裝置（1 8)投 影至一顯示螢幕（1 9 )。 1267687 再請參閱第七圖所示9其係為一種具反射式數位微鏡 元件（Digital Micro Device 9簡稱DMD)之投影顯 示裝置的系統示意圖$其主要係藉由將一光源（1 〇 )所 產生之照明光束（A>經一拋物線曲面狀之反射鏡（1 1 ) 反射通過一第一聚光透鏡組（1 2 >以將該光束（A )聚 集至一色輪（1 3)5籍由該色輪（1 3)之紅色、綠色、 藍色濾光鏡依序攔截該光束（A )，以將其轉換成有色光束 (A 1 )，然後使其通過一中空之積分拄（2 0 )以使該光 束（A 1 )產生均勻化效果$之後再依序使其經由一第二 光透鏡組 :(1 7 1 7 )之 聚光透鏡組（14)、一光攔（15)及一第三: (1 6 )等之調整$再使其投射至一投影光學裝 即反射式數位微鏡元件，並使該投影光學裝置 影像折射至一成像裝 投影至一顯示螢幕（ 另再請參閱第八圈所示$ 面板（L C 0 S)之投影顯示 8 )，並經該成像裝置 8 為一種具反射 的系統示意圖 BB 王 ，源 0 係藉由將一 物線曲面狀之反射鏡 (1 2 )，以將 該色 束(A )夕以將其轉換； 一中空之積分拄（2 0 經 生之照明光束（A 反射通過一第一聚光透鏡組 東（A)聚集至一色輪（1 3)9藉由 綠色、藍色瀘光鏡依序攔截該光 (A 1 ) $然後使其通過 該光束（A 1 )產生均勻化 4 )" 一 等之調整$再 效果，之後再依序使其經由一第 光欄（1 5 )及一第三聚光透韻 1267687 使其投射至一投影光學裝置（1 7)，即反射式單晶矽面 板，並使該投影光學裝置（1 7)之影像折射至一成像裝 置（1 8 >並經該成像裝置（1 8 )投影至一顯示螢幕（1 9 )。 . 由上述之各種投影顯示裝置可知，『積分柱』乃是一 不可缺少之重要光學元件，其作用原理主要係利用中空狀 之内反射表面，讓入射光線在積分柱内部經過多次之全反 射後p而獲得一均勻牝的照明光源$使最終的投影顯示晝 面具有更佳的對比及解析度。 請參閲第丸、十圖所示，係為一習知的積分柱（2 0) 結構$其結構主要係由四片兩雨相互平行之鏡片（2 1 ) 所組成之中空方形框拄體，其中各鏡片（21)於内表面 係鍍設有一層反射膜（2 2 雨該積分柱（2 0 )之雨端 面則俊光線之進出方向則分别設為入光面（2 3)及出光 面（2 4 )。 由上述積分拄之原理可得知5僅要使光線由積分柱 (2 0)之入光面（2 3)的中空開口進入並照射到各鏡 月（2 1 )之内表面反射膜（2 2)上，即可使其藉由多 次全反射而達到使光線均勻化之目的；然雨$讀參閱第十 圖所示，實際操作時$投射至該積分柱（2 0)入光面（2 3 )之光線事實上並不會全部均由申空開口處進入；其中 少部份的光線會投射到該入光面（2 3)上鏡月（2 1 ) 之厚度部份，而由該厚度部份進入鏡月（2 1 )之中，然 後由出光面（2 4)端的鏡片之厚度部分出射。此外$積分 1267687 柱鏡片的内表面反射膜（2 2)或多或少會因鍍膜過程的 品質不良9導致已進入積分拄内部進行全反射的入射光有 少部分未被反射膜全反射而直接進入積分柱的鏡片厚度部 分中$最後同樣再由出光面（2 4)端的鏡片厚度部分出 射。由於該鏡片（2 1 )之厚度部分的折射係數與積分柱 中空内部的折射係數不同$所以該進入鏡月（2 1 )之厚 度部分申之光線在出射後便會產生不同於積分柱（2 0 ) 之中央空間的折射效果$如此在積分拄（2 0)之出光面 (2 4)便具有不同折射效果之光線$因而影響到由積分 柱（2 0)所投射出光線的整體均勻度$其中該由鏡片（2 1 )之厚度部份投射出之光線9因其折射次數較多，而會 在由中央空間所投射出之光線的周圍形咸紅、藍'4線二種 顏色所組咸之光線條，嚴重影響到投影影像之品質，此即 為因積分拄產生的雜散光所導致的結果。且此種雜散光現 象在高對比及高解折度要求嚴袼之投影顯示裝置上尤難以 忍受其產生。 有關消除投影顯示裝置雜散光之習知技術，如中華民 國新型專利公告第566786號，其揭示了一種具有擋光板之 背投影顯示裝置，該擋光板係設於顯示裝置之反射鏡與螢 幕間$用以阻擋投射於該螢幕之雜散光；特别是$其中該 擋光板阻擋雜散光表面具有光吸收材質。此習知技術對於 上述關於積分柱所產生之雜散光間题9並未有任何的教示 或暗示。在有關積分柱之習知技術部分，如中華民國發明 1267687 明架構$該如少 隹在積<v，^姆之一個目的在於使多光源的各光線直趣聚 ，问摔^ %〜雨不會造成光線的散失9以提升光利用率。 wm地，此習 r 的出射奏':视術對於因積分柱所產生之雜散光雨導致 善π不岣句現象$亦完全未曾提及。緣是/本發_人 14^町對上域 刀就良氧. 雨開 卜明内容] 本發明之主 產生雜 h ^ 問題而深入構思且積極研究9歷經1267687 IX. INSTRUCTION DESCRIPTION: TECHNICAL FIELD The present invention relates to a method for suppressing generation of stray light by a projection display device and an integrating column structure capable of suppressing generation of stray light.先前Previous technology according to the current common projection display device on the market is based on its different projection optical device $ respectively as a transmissive liquid crystal panel (LCD) projection display device, with reflective digital micro-mirror components ( Digital Micro Device (DMD) projection display device, projection display device with reflective single crystal germanium panel (LCOS), etc., wherein: read as shown in the sixth figure, which is a transmissive liquid crystal panel ( System diagram of a projection display device of LCD), mainly by reflecting a light beam (A 0 ) generated by a light source (10) through a parabolic mirror (1 1 ) through a first collecting lens Group (1 2 to concentrate the beam (A) to a color wheel (13), and the beam (A) 9 is sequentially intercepted by the red, green, and blue filters of the color wheel (13) to It is converted into a colored light (A 1 ) and then passed through a hollow integrating column (20) to homogenize the colored light beam (A 1 ), and then sequentially passed through a second concentrated light. Lens group (1 4 ), a light column (1 5) and a third group The adjustment of the lens group (16) and the like 9 is then projected onto a projection optical device (1), that is, the transmissive liquid crystal panel $ finally passes the image of the projection optical device (17) through an imaging device (1). 8) Projecting to a display screen (1 9 ) 1267687 Referring again to FIG. 9 , a system diagram of a projection display device with a reflective digital micro-mirror device (DMD) Mainly by reflecting a light source (1 〇) generated by an illumination beam (A> through a parabolic curved mirror (1 1 ) through a first concentrating lens group (1 2 > to A) Gathering to a color wheel (1 3) 5, the red, green, and blue filters of the color wheel (13) sequentially intercept the beam (A) to convert it into a colored beam (A 1 ) And then passing it through a hollow integral 拄(2 0 ) to cause the beam (A 1 ) to produce a homogenization effect $ and then sequentially passing it through a second optical lens group: (1 7 1 7 ) Adjustment of the lens group (14), a light barrier (15), and a third: (1 6), etc., and then projecting it to a projection optical device, that is, reflective Positioning the micromirror element and refracting the image of the projection optics to an imaging device and projecting it onto a display screen (see also the projection display 8 of the panel (LC 0 S) shown in the eighth circle) and passing through the imaging device 8 is a schematic diagram of a system with reflection BB, source 0 by transforming a line of curved mirrors (1 2 ) to transform the color beam (A); a hollow integral 拄 ( 2 0 Illuminated illumination beam (A reflection through a first condenser lens group East (A) gathered to a color wheel (1 3) 9 sequentially intercepts the light (A 1 ) by a green, blue pupil lens Then it is made to homogenize through the beam (A 1 ) 4 ) " first-order adjustment $ re-effect, and then sequentially through a first light column (1 5) and a third concentrated light through the rhyme 1267687 It is projected onto a projection optical device (17), that is, a reflective single crystal germanium panel, and refracts the image of the projection optical device (17) to an imaging device (1 8 > and through the imaging device (1 8) Projected to a display screen (1 9 ). It can be seen from the above various projection display devices that the "integral column" is an indispensable important optical component, and its function principle mainly utilizes a hollow inner reflective surface to allow the incident light to undergo total reflection after multiple times inside the integrating column. After p, a uniform illumination source is obtained. The final projection display has better contrast and resolution. Please refer to the first pill, shown in Figure 10, which is a conventional integral column (20) structure. The structure is mainly composed of four hollow square frames with two rain and parallel lenses (2 1 ). Each of the lenses (21) is plated with a reflective film on the inner surface (2 2 rains the rain end of the integral column (20), and the direction of entry and exit of the light is set to the light entrance surface (23) and the light exit surface, respectively. (2 4 ). From the principle of the above-mentioned integral 拄, it can be known that 5 only needs to enter the light from the hollow opening of the entrance surface (2 3) of the integral column (20) and illuminate each mirror month (2 1 ). On the surface reflection film (2 2), it can achieve the purpose of homogenizing the light by multiple total reflections; the rain is read as shown in the tenth figure, and the actual operation is projected to the integral column (2) 0) The light entering the light surface (2 3 ) does not actually enter through the open space; a small part of the light will be projected onto the light incident surface (2 3). The thickness portion, which enters the mirror moon (2 1 ) and then exits from the thickness of the lens at the end of the light exit surface (2 4). In addition, $1,267,687 The inner surface reflection film (2 2) is more or less due to the poor quality of the coating process. 9 The incident light that has entered the integral 拄 internal total reflection has a small portion of the lens thickness that is not totally reflected by the reflection film and directly enters the integrating column. In the part, the last part is also emitted from the thickness of the lens at the end of the illuminating surface (2 4). Since the refractive index of the thickness portion of the lens (2 1 ) is different from the refractive index of the hollow interior of the integrating column, the entering mirror month (2 1 Part of the thickness of the light, after the exit, will produce a refraction effect different from the central space of the integral column (20). Thus, the light exiting the surface (2 4) of the integral 拄(2 0) has different refraction effects. $ thus affects the overall uniformity of the light projected by the integral column (20). The light 9 projected by the thickness portion of the lens (2 1 ) is more likely to be refracted by the central space. The light rays of the projected light are surrounded by salty red and blue '4 lines and two colors, which seriously affect the quality of the projected image. This is the result of stray light generated by the integral 拄. Stray light It is especially difficult to bear with the projection display device with high contrast and high resolution. The conventional technology for eliminating stray light of the projection display device, such as the Republic of China New Patent Publication No. 566786, discloses that A rear projection display device of the light barrier is disposed between the mirror of the display device and the screen to block stray light projected on the screen; in particular, the light blocking plate blocks the surface of the stray light and has a light absorbing material. This prior art does not have any teaching or suggestion for the above-mentioned stray light generated by the integrating column. In the conventional technical part of the integral column, such as the Republic of China invention 1267687, the structure is less than One of the purposes of <v,^m is to make the light of multiple light sources gather together, and ask for the drop. %~ Rain will not cause the loss of light 9 to improve the light utilization rate. Wm, the appearance of this s r': the visual technique caused by the stray light rain caused by the integral column, and the phenomenon of good π is not mentioned at all.缘是/本发_人 14^町对上域 Knife is good oxygen. 雨开 卜明Content] The main problem of the invention is the generation of miscellaneous h ^ problem and deeply conceived and actively studied 9
目的 •提供 f抑制投影 ，卜 言’本發明所述投影顯示裝置之雜散光抑制方 一的赤屄‘4於—中空狀積分柱之入光面及出光面中，擇 抑制3=^者之鏡㈣度雜予鱗蔽。如此5便可 屮，碓吟U滅積分柱之入光面或由光面之鏡片厚度部份進 d ]...雨途到抑制雜散光之產生者。 明夕 @ 、、：. _ 一胳 .〜1一王要目的係在於提供一種可抑制投爭 顯不裝置麵_叙積絲賴者。. 〜 積分柱之兩端面 出光面，且於該 奢之鏡片厚度部份上 _蔽物之遮蔽5抑制 份％出9進而達到抑 雨兩之=明所述之積分板結構，主要係由四片 μ㈣二 < 知所組成之中空方形框柱體，其中各鏡 U 上係鍍設有一層反射膜，而 則俊光線之進入方向則分别設為入光面 入光面及出光面中擇一的或同時在兩 设看一遮蔽物者。如此，便可藉由讀 先線由入光面或出光面之鏡片厚 制雜散光之產生者。 1267687 ί實施方式 '」 本發明所述投影顯示裝置之雜散光抑制方法/其主要 係為將投影顯示裝置之中空狀積分輕（2 0 )的入光面（2 <i)及出光面（24)中9擇一或同時將兩者之鏡片（2 1 )厚度部份予以遮蔽$以抑制光線由該積分柱（2◎) 之入光面（2 3)或出光面（2 4)之鏡月（2 1 )厚度 部份進出，進而達到抑制雜散光之產生者。 至於將入光面（2 3)或出光面（2 4)予以遮蔽之 方式9 f使用任何能滅低光透射且適合固設在入光面（2 3)或出光面（24)上之物5例如塗層、鍍膜、金屬月5 甚至不透光的紙片亦可。在本發明實例所例示者，則是以 利用塗钸不透光之遮蔽薄膜或設置減低光透射之遮蔽罩等 方式來形成一遮蔽層（2 5)，雨該遮蔽薄臈係可為金屬鍛 膜"HR (High Reflection)鍍膜威其它消光材料$牵於 該遮蔽罩則係可由金屬材質、陶瓷材質或其它对熱之材新 所製成。 」 讀參閲第一圖所示，係為本發明所述投影顯示裝置之 積分柱（2 0)立體結構i其主要孫由_片兩兩相互平行 之鏡片（2 1 )所組成之申空方形框拄體5其中各鏡月（2 i )於内表面上係鍍設有一層反射膜（2 2 )，而該積分检 (2 0)之雨端面則依光線之進出方向區分為入光面（^ 3)及出光面（24)，且於該入光面（23)之鏡月（2OBJECTIVE • To provide a f-suppressed projection, in which the stray light of the projection display device of the present invention suppresses the red 屄 '4 in the light-incident surface and the light-emitting surface of the hollow-shaped integral column, and the suppression is 3=^ The mirror (four) is mixed with scales. So 5 can be 屮, 碓吟U to extinguish the entrance surface of the integral column or into the thickness of the lens of the glossy surface d]... rain to suppress the generation of stray light. Ming Xi @ @, , :. _ 一 。 . 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ~ The light-emitting surface of both ends of the integral column, and the thickness of the lens of the extravagant part of the mask 5 is suppressed by 9% and then reaches the structure of the integrated plate of the rain-proof two, which is mainly composed of four The film μ (four) two < knows the hollow square frame cylinder, wherein each mirror U is plated with a reflection film, and the entry direction of the Jun light is set as the light entrance surface and the light exit surface respectively. Or at the same time in two settings to see a shelter. In this way, the producer of stray light can be thickened by the front line from the lens of the light incident surface or the light exit surface. 1267687 实施实施方式′′ The stray light suppression method of the projection display device of the present invention is mainly a light-integrated surface (2 < i) and a light-emitting surface of a hollow integrated light (2 0 ) of the projection display device 24) Alternatively, or at the same time, mask the thickness portion of the lens (2 1 ) of both to suppress the light from entering the light surface (23) or the light exit surface (2 4) of the integrating column (2 ◎) The mirror moon (2 1 ) partially enters and exits the thickness, thereby achieving the suppression of stray light. As for the way of shielding the light-incident surface (23) or the light-emitting surface (24), any material that can be used to fix the light-transmitting surface and is suitable for fixing on the light-incident surface (23) or the light-emitting surface (24) is used. 5 For example, coating, coating, metal moon 5 or even opaque paper can also be used. In the example of the present invention, a shielding layer (25) is formed by using a masking film which is opaque or a mask for reducing light transmission, and the masking layer can be metal forging. Film "HR (High Reflection) Coatings Other matting materials can be made of metal, ceramic or other materials for heat. Referring to the first figure, it is a three-dimensional structure of the integral column (20) of the projection display device of the present invention, and the main sun is composed of two pairs of lenses (2 1 ) which are parallel to each other. The square frame body 5 has a reflection film (2 2 ) plated on the inner surface of each mirror month (2 i ), and the rain end face of the integral detection (20) is divided into light according to the direction of light entering and exiting. Face (^ 3) and light exit surface (24), and the mirror surface of the light entrance surface (23) (2
1 )厚度部份的表面上設有一遮蔽廣（2 5 );而其中該遮 蔽層（25)係可為一由塗佈方式形戚之金屬鍍膜、只R 10 1267687 (High Reflection)鍍膜或其它之消光材料9或亦可為一 由金屬材質"陶竞材質或其它®t熱之材質所製成之遮蔽單。 請參閱第二圖$係為本發明之積分拄的侧剖面示意 圖。當光線投射至該入光面（2 3)上時，則便會因遮蔽 層（25)之抑制9雨使入射光主要由中空之部份進入9 因此相對的便由出光面（24)之中空部份投射出均勻之1) The surface of the thickness portion is provided with a wide cover (25); and the shielding layer (25) may be a metal coating film coated by a coating method, only R 10 1267687 (High Reflection) coating or the like. The matting material 9 may also be a blanking sheet made of a metal material, "Tao Jing material or other materials." Please refer to the second figure, which is a side cross-sectional view of the integral 拄 of the present invention. When the light is projected onto the light-incident surface (23), the rain will be blocked by the shielding layer (25). The incident light will mainly enter the hollow portion through the hollow portion. Therefore, the light-emitting surface (24) is opposite. The hollow part is projected evenly
請參閲第三圖所示，該遮蔽層（2 5)係設於該出光 面（2 4)之鏡片（2 1 )厚度部份上$以使由入光面（2 3)之鏡月（2 1 )厚度部份進入之光線會被出光面（2 4)上之遮蔽層（2 5)所抑制$進而使出射光主要由出 光面（2 4)之中空部份投射而出$該出射光即為均勻之 光線，所以亦可有效抑制雜散光之產生。 請參閱第四圖所示$亦可同時於該入光面（2 3 )及 出光面（2 4)之鏡月（2 1 )厚度部份上皆設置一遮蔽 層（2 5)9以使光線投射至該入光面（2 3)上時9會因 遮蔽層（2 5)之抑制$除了促使入射光主要由中空之部 份進入外$即使偶有徽弱之光線穿透反射膜（2 2)而透 入鏡片（2 1 )厚度部分申時，亦會被該設於出光面（2 4)上之遮蔽層（2 5)所抑制$而使其可因此具有一1 佳之投影品質。 請參閱第五圖所示$係為本發明之積分拄（2 0)結 構安裝於投影顯示裝置之基座（3 0)上的立體分解示意 圖$其中該基座（3 0)上係設有一對應於該積分拄外形 31267687 且於該凹槽（31)之雨侧係設有複數個 (3 2 )，該積分柱（2 0 )係其中相鄰之兩侧邊嵌入 凹槽（3 1 )之中，至於另外的雨侧邊則凸露於該四 槽（31)之外部，並另外以一壓板（40)壓設於該積 分检（2 〇)上方，該壓板（4 0)係部份彎折成一對應 於該積分祆外型之嵌設部（4 1 ) $以使該嵌設部（4 1 ) 恰可扣設於該積分拄（2 0 )凸露於凹槽（3 1 )外部之 兩侧邊上，且於該壓板（4 0)上並又設有複數穿孔（^ 2)可供螺絲穿設而螺鎖於該基座（3 〇)之螺孔（3 2 ) 上9藉£4使其具有便於定位之功效者。 t本發明麵_鄉齡裝置之_光抑制方 有產業上化如域，#轉發啊具 ^ ^精由遮敝積分柱之入光面或出光 .光影響出射光均勻度之方法與積分桎結 中迄今均未見有類似之前案或 .能有效帅軸.ς錢置疑；树3狀技術手段 顯示裝__㈣面之 技術手段之進歩性。餘 利之申請要件9 ^ 禱。 ^ •一 π ..U···、 y it γϊι i.一;w.v. u τί ，*»>*» · 利為 於. 面而達成抑制雜 構$在習知技術及同 品驗. 性 >產生而大幅地提升、 。析度，更足Μ肯定本發明 ^ 明已符合法定發明專 _申請並盼能早g 12 1267687 ί圖式簡單說明 '」 第一圖，係本發明遮蔽層設於入光面之立體外觀圖。 第二圖，係本發明遮蔽層設於入光面之光線折射示意圖。 第三圖$係本發明遮蔽層設於出光面之光線折射示意圖。 第四圖，係本發明遮蔽層設於入光面及出光面之光線折射 示意圖。 第五圖$本發明之積分柱安裝於投影顯式裝置之基座上的 立體分解示意圖。 第六圖9係一種具穿透式液晶面板之投影顯不裝置的系统 示意圖。 第七圖9係一種具反射式數位微鏡元件之投影顯示裝置的 系統示意圖。 第八國，係一種具反射式單晶矽面板之投影顯示裝置的系 統示意圖。 第九圖，係習用積分柱之端面視圖。 第十圖$係習用積分柱之光線折射示意圖。 1267687 (2 4)出光面 (3 Ο )基座 (3 2)螺孔 (41)嵌設部 (A )光束 (2 5)遮蔽層 (3 1 )凹槽 (4 0)壓板 (4 2 )穿孔 (A1)有色光柬 14Referring to the third figure, the shielding layer (25) is disposed on the thickness portion of the lens (2 1) of the light-emitting surface (2 4) so as to be mirrored by the light-incident surface (2 3). (2 1 ) The light entering the thickness portion is suppressed by the shielding layer (25) on the light-emitting surface (2 4), so that the outgoing light is mainly projected from the hollow portion of the light-emitting surface (24). The outgoing light is a uniform light, so it can effectively suppress the generation of stray light. Please refer to the fourth figure. A masking layer (2 5) 9 can also be provided on both the entrance surface (2 3 ) and the mirror surface (2 1 ) of the light-emitting surface (2 4). When light is projected onto the light-incident surface (2 3), 9 will be suppressed by the shielding layer (25). In addition to causing the incident light to enter the air mainly from the hollow portion, even the light with the weak emblem penetrates the reflective film ( 2 2) and the thickness of the lens (2 1 ) is also suppressed by the shielding layer (25) disposed on the light-emitting surface (2 4), so that it can have a good projection quality. . Please refer to the fifth figure, which is a perspective exploded view of the integral structure (20) of the present invention mounted on the base (30) of the projection display device. The base (30) is provided with a Corresponding to the integral 拄 shape 31267687 and a plurality of (3 2 ) on the rain side of the groove (31), the integral column (20) is in which the adjacent two sides are embedded in the groove (3 1 ) The other side of the rain is exposed to the outside of the four slots (31), and is additionally pressed by the pressure plate (40) above the integral inspection (2 〇), the pressure plate (40) The portion is bent into an embedding portion (4 1 ) corresponding to the integral 祆 shape so that the embedding portion (4 1 ) can be buckled to the integral 拄 (20) and protruded into the groove (3 1 ) on both sides of the outer side, and on the pressing plate (40), a plurality of perforations (^ 2) are provided for the screw to be screwed to the screw hole of the base (3 )) (3 2 ) The top 9 borrows £4 to make it easy to position. t The invention of the invention _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the end, there has been no similar case or the previous case. It can be effective and handsome. The tree-like technical means shows the technological means of loading __(4). Yu Lizhi's application requirements 9 ^ Prayer. ^ • π ..U···, y it γϊι i.一;wv u τί ,*»>*» · Benefit for. Face to achieve suppression of miscellaneous structure in the conventional technology and the same product. > generated and greatly improved, . The degree of resolution is more than certain that the invention has met the statutory inventions and has been applied for and is expected to be as early as g 12 1267687 ί. The first figure is a three-dimensional appearance of the shielding layer of the present invention on the light-incident surface. . The second figure is a schematic diagram of the light refraction of the shielding layer of the present invention disposed on the light incident surface. The third figure is a schematic diagram of the light refraction of the shielding layer of the present invention disposed on the light exiting surface. The fourth figure is a schematic diagram of the light refraction of the shielding layer provided on the light incident surface and the light exit surface of the present invention. Fig. 5 is a perspective exploded view showing the integrator column of the present invention mounted on the base of the projection display device. Fig. 9 is a schematic diagram of a system for a projection display device with a transmissive liquid crystal panel. Fig. 9 is a system diagram showing a projection display device with a reflective digital micromirror device. The eighth country is a schematic diagram of a system for a projection display device having a reflective single crystal germanium panel. The ninth figure is an end view of a conventional integrating column. The tenth figure is a schematic diagram of the light refraction of the conventional integrating column. 1267687 (2 4) illuminating surface (3 Ο) pedestal (3 2) screw hole (41) embedded portion (A) beam (2 5) shielding layer (3 1) groove (40) plate (4 2 ) Perforated (A1) colored light 14