TW524993B

TW524993B - Optical systems for reflective LCD's

Info

Publication number: TW524993B
Application number: TW89109505A
Authority: TW
Inventors: E Gregory Fulkerson; Simon Magarill; John D Rudolph
Original assignee: U S Prec Lens Inc
Priority date: 1999-04-21
Filing date: 2000-05-16
Publication date: 2003-03-21

Abstract

Optical systems for use with reflective LCDs (8, 9, 32, 34, 36) are provided. The systems include a polarization beam splitter (5) which can be composed of polarization beam splitting cubes (26) having sheet polarizers (30) and/or half wave plates (28) at their mating surfaces. By orienting the half wave plates (28) so that they convert S polarization to P polarization and P polarization to S polarization, the polarization beam splitter (5) can provide a high contrast ratio at a viewing screen between light from the ""on"" and ""off"" pixels of the reflective LCDs (8, 9, 32, 34, 36).

Description

524993 A7 B7 2 五、發明説明（經濟部中央榇準局員工消費合作社印製發明領域：本赉明係關於使用於反射性LQ)之投射光學裝置。發明背景： " 圖1為朱前技術使用三個反射性LCD板之投射系統，即紅色光線LCD 10,綠色光線LCD 12,以及藍色光線LC]) ’ 14。由光源16¾射出光線藉由傳統偏極光束***立方體μ加以偏極化以及光線之S-部份（以連續線條表示於所有附圖）被反射朝向色彩立方體2〇以及LCD。色彩立方體將光線分離為紅色，綠色以及藍色之主要色彩。由LCD開圖素反射之光線具有P-偏極性（由虛線表示於所有附圖中）以及通過偏極光束***（PBs)立方體對角線到達投射透鏡22以形成影像於銀幕(並未顯示）上。由”關π 圖素反射之光線具有S-偏極性，其被PBS立方體對角線反射以及並不通過到達銀幕位置。雖然圖1设計具有緊湊性結構，但是其具有一些缺點，包含·（1)光源發出P-偏極性完全失去；（2)系統對比受限由 PBS立方體對角線之偏極特性，其特性^將使商業投射器之f 值變差；以及.（3)色彩立方體需要運作所有三種色彩之s&p 偏極性，其導致低效率之色彩分離/再組合。特別地，二向色截止遽波器斜率永遠小於1QQ%以避免不需要之色彩混合，在藍色與綠色及綠色與紅色邊界上一些光線必需刻意地截止以及因而失去。除此，光線戴止數 ϊ必需考慮二向色遽波之斜率與截止波長，其決定於入射角度以及偏極性。由於這些效應，當所有三個LCD位於相 (請先閱讀背面之注意事項再填寫本頁) f 訂本紙張尺度適用中國國家標準（CNS ) Μ規格（210X297公釐） ' ~ i 524993 A7 B7 五、發明説明（^ ) 經濟部中央標準局員工消費合作社印製同偏極頻道中以及單一色彩立方體使用來將三種主要光線色彩分離以及再組合時將發生光線損耗。曰本公告第10-253922號專利顯示圖1系統之變化情况，其使用兩個'二向色菱鏡而不使用單一色彩立方體。雖然芘主要系統為佳，該方式為複雜機械構造以及呈現出對比減小，其依靠只具有一條偏極對角線之單一偏極光束*** 立方體。 ^ 另外一個已知構造為S-Vision Inc. (Santa Clara，. CA)^展出。參閱B〇ne專人之’’Novel Optical System Design for Reflective CMOS Technology" Proceedings 〇f SPIE，Volume 3634，pages 80-86，1999。該方式使用離軸光學元件，兩個色彩立方體，以及兩個薄膜偏極器（一個為偏極器以及另外一個為分析器）以提昇對比。每一色彩立方體對一種偏極性運作，其提高色彩分離/再合併之、效率。其存在問題包含：（1)兩個色彩立方體費用；（2)光源發出第二偏極性將失去；（3)離軸光學元件之複雜性以及昂貴費用。 " 發明大要：鑑於先前所說明，本發明一項目標為提供改良光學系統以使用於反射性LCD。特別地，本發明一項目標為提供光學系統，其具有下列一些以及優先地具有所有特性：（1)系統機械構造為簡單的，（2)系統所使用昂貴光學元件減為最低，（3)系統至少使用一些每一偏極性之光線，以及（4)系統達成高度對比。本纸張尺度適财關家^^( CNS ) A4祕（210X 297公沒） 5" i —φ^ — I (绮先閲讀背面之注意事項再填寫本頁) 訂 524993 A7 B7 、發明説明束分; :桃:靖角線垂直地相交:***器為對稱性於 j (即***益對每—對角、線具有鏡面對稱性)，其中具初偏 2光線主要地由每一條對角線反射以Ap偏極性光線主要透射通過每一對角線。在特定優先實施例中，單一***器包含四個偏極光束刀裂立方體，每-立方體沿著兩個表面鄰接另外兩個立方體以形成整體光束***器。在一些實施例中，所有立方體 ^寸為相θ的，細在糾—個實細巾，兩個立方體具有第一尺寸以及另兩個立方體具有第二尺寸。半波板及/或片狀偏極器能夠位於偏極光束***立方體相鄰表面之間。㈣抽零，二或四辨波板以及零，二或四個片狀偏極為，在需要時能夠使用任何組合。這些片狀偏極器將改善對比。半波板能夠使用來補償扭曲光線偏極性之茂漏或能夠使用來改善對比，其中每一半波板之指向能夠將S偏極性光線轉變為p偏極性'光線以及?偏極性光線轉變為S偉極性光線。經濟部中央標準局員工消費合作社印製本發明另外一項為提供光學系統，其包含先前所說明形式之偏極光束***器，光源以提供光線到達***器之部份第一側邊，投射透鏡以接收通過***器之部份第二側邊光線，第二側邊相對著第一側邊，以及至少一個第一反射性轉變偏極性之圖素板以及第二反射性轉變偏極性之圖素板，每一圖素板作為調變由光源發出傳送至投射透鏡之光線，本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公楚）經濟部中央標準局員工消費合作社印製 524993 A7 五、發明説明（十）一 — 一個或二個圖素板***器側邊，該側邊與光源以及投射透鏡與为裂态相結合之側邊並不相同。本發明另外一項為提供一種方法以改善投射系統之對 •比，、其使用至、少一個反射性轉變偏極性之圖素板，其包含通過光源發出光線到達圖素板，調變在圖素板處光線，以及通過被調變光線到達投射透鏡，其中 U)在光源與投射透鏡間，至少一些光線通過兩個半波板，半波板朝向將使S偏極性光線轉變為p偏極性光線以及p偏 ..極性光線轉變為S偏極性光線； (b) 在光源與圖素板間，光線與兩條偏極性對角線相互作用，具有S偏極性光線進行一個相互作用以及具有p偏極性光線進行另一個相互作用；以及 (c) 在圖素板與投射透鏡間，光線與兩條偏極性對角線相互作用，具有S偏極性光線進行一個相互作用以及具有p偏極性光線進行另一個相互作用；其中與偏極對角線交互作用包含： (iMk如光線具有P偏極性，主要地透射通過對角線； (ii)假如光線具有S偏極性，主要地由對角線反射；依據這些特定優先實施例，本發明提供一種方法以改善投射系統之對比，該系統使用至少兩個反射性轉變偏極性之圖素板，其包含通過光源發出光線到達圖素板，調變在兩個圖素板處光線，及通過被調變光線到達投射透鏡，其中 (a)在光源與投射透鏡間，第一部份光線通過第一及第二半波板以及第二部份光線通過第三及第四半波板，每一半本紙張尺度適用中國國家標準（CNS)八4胁（21〇χ297公楚） (請先閱讀背面之注意事項再填寫本頁) 、?! Φ— 524993 五、發明Μ明（y)524993 A7 B7 2 V. Description of the invention (printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs) Field of invention: This is a projection optical device used in reflective LQ. Background of the Invention: " Figure 1 is a projection system using three reflective LCD panels by Zhu Qian Technology, namely red light LCD 10, green light LCD 12, and blue light LC]) '14. The light emitted by the light source 16¾ is polarized by the conventional polarized beam splitting cube μ, and the S-portion of the light (shown as continuous lines in all drawings) is reflected toward the color cube 20 and the LCD. The color cube separates light into the main colors of red, green, and blue. The light reflected by the LCD pixels has a P-polarity (indicated by dotted lines in all the drawings) and the diagonal of the polarized beam split (PBs) cube reaches the projection lens 22 to form an image on the screen (not shown) on. The light reflected by the "offπ pixel" has S-polarity, which is reflected diagonally by the PBS cube and does not pass through to reach the screen position. Although the design of Figure 1 has a compact structure, it has some disadvantages, including · ( 1) The P-polarity emitted by the light source is completely lost; (2) The system contrast is limited by the polarized characteristics of the diagonal of the PBS cube, and its characteristics ^ will make the f-number of commercial projectors worse; and (3) the color cube It is necessary to operate the s & p polarities of all three colors, which results in inefficient color separation / recombination. In particular, the dichroic cut-off filter slope is always less than 1QQ% to avoid unwanted color mixing. Some light on the green and green and red borders must be intentionally cut off and thus lost. In addition, the number of rays worn must consider the slope and cutoff wavelength of the dichroic chirp, which depends on the angle of incidence and polarization. Due to these effects When all three LCDs are in the phase (please read the precautions on the back before filling this page) f The paper size of the book is applicable to the Chinese National Standard (CNS) M specifications (210X297 mm) '~ i 524 993 A7 B7 V. Description of the invention (^) In the consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, printed in the same polarized channel and used in a single color cube to separate and recombine the three main light colors, light loss will occur. The patent No. 10-253922 shows the variation of the system of Figure 1, which uses two 'dichroic diamond mirrors instead of a single color cube. Although the main system is better, this method is a complex mechanical structure and exhibits reduced contrast, It relies on a single polarized beam splitting cube with only one polarized diagonal. ^ Another known structure is exhibited by S-Vision Inc. (Santa Clara, CA). See Bonone's "Novel" Optical System Design for Reflective CMOS Technology " Proceedings 〇f SPIE, Volume 3634, pages 80-86, 1999. This method uses off-axis optics, two color cubes, and two thin film polarizers (one for the polarizer and The other is an analyzer) to improve contrast. Each color cube operates on a type of polarity, which improves the efficiency of color separation / recombination. The problems include: (1) the cost of two color cubes; (2) the second polarization of the light source will be lost; (3) the complexity and cost of the off-axis optical element. As stated, it is an object of the present invention to provide an improved optical system for use in a reflective LCD. In particular, it is an object of the present invention to provide an optical system having the following and preferably all characteristics: (1) mechanical structure of the system For simplicity, (2) the use of expensive optical components is minimized, (3) the system uses at least some light of each polarity, and (4) the system achieves a high degree of contrast. The paper size is suitable for financial matters ^^ (CNS) A4 secret (210X 297 public) 5 " i —φ ^ — I (I read the precautions on the back before filling in this page) Order 524993 A7 B7 、 Invention bundle Points:: Peach: Jing angle lines intersect perpendicularly: the splitter is symmetrical to j (that is, the splitting benefit is diagonal to the diagonal, and the line has a mirror symmetry), where the initial deviation 2 light is mainly composed of each diagonal line Reflections are transmitted primarily through each diagonal with Ap-polarized light. In a particular preferred embodiment, a single splitter contains four polarized beam splitter cubes, each cube adjoining two other cubes along two surfaces to form an integral beam splitter. In some embodiments, all of the cubes are phase-theta, and are fine-grained. Two cubes have a first size and the other two cubes have a second size. Half-wave plates and / or sheet polarizers can be located between adjacent surfaces of the polarizing beam splitting cube. ㈣Zero, two or four wave plates and zero, two or four plate polarities can be used in any combination when needed. These sheet polarizers will improve contrast. Half-wave plates can be used to compensate for the leakage of twisted light polarities or can be used to improve contrast, where the orientation of each half-wave plate can convert S-polarized light into p-polarized light and? -Polarized light into S Polar light. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Another aspect of the present invention is to provide an optical system that includes a polarized beam splitter in the form previously described. The light source provides light to the first side of the splitter and a projection lens. To receive a part of the light passing through the second side of the splitter, the second side is opposite to the first side, and at least one first reflectively polarized pixel plate and the second reflectively polarized pixel Board, each pixel board is used to modulate the light transmitted from the light source to the projection lens. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297). Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 524993 A7 5. Description of the Invention (10) One—One or two pixel plate splitter sides, which are different from the light source and the side of the projection lens combined with the split state. Another aspect of the present invention is to provide a method to improve the contrast ratio of a projection system. The use of at least one reflective pixel plate with a reflective polarity change includes the light plate reaching the pixel plate through a light source. The light at the plain plate and the modulated light reach the projection lens, where U) between the light source and the projection lens, at least some of the light passes through the two half-wave plates, and the half-wave plate orientation will convert the S-polarized light to p-polarized Light and p-polarity .. Polar light is converted to S-polarized light; (b) Between the light source and the pixel plate, the light interacts with two diagonals of polarized polarity, and an interaction with S-polarized light and p The polarized light rays perform another interaction; and (c) between the pixel plate and the projection lens, the light rays interact with two polarized diagonal lines, one interaction with S polarized light and one with p polarized light. Another interaction; where the interaction with the polar polar diagonal includes: (iMk if the light has P-polarity, mainly transmitted through the diagonal; (ii) if the light has S-polarity Reflected mainly by diagonal lines; according to these particular preferred embodiments, the present invention provides a method to improve the contrast of a projection system that uses at least two reflectively polarized pixel panels that include light emitted by a light source Reach the pixel board, modulate the light at the two pixel boards, and reach the projection lens through the modulated light, where (a) between the light source and the projection lens, the first part of the light passes through the first and second half waves Board and the second part of the light pass through the third and fourth half-wave boards, each half of the paper size applies the Chinese National Standard (CNS) Ya 4 wa (21〇χ297 公楚) (Please read the precautions on the back before filling in this (Page),?! Φ— 524993 V. Invention of M Ming (y)

經濟部中央標準局員工消費合作社印製波板朝向將使S偏極性光線轉變為p偏極 .性光線轉變為s偏極性光線； ·、、在及P偏極朽光源與兩個圖素板之每—圖素板間，光線與兩條偏 .極性對角線相互作用，具有s偏極性光線進行一個相互以及具有p偏極性光線進行另一個相互作用；以及夂2)在關圖餘之每—目餘與鄕透綱，光線與兩域極性對舰相互作用，具有s偏極縣線進行_個相互作用以及具有P偏極性光線進行另一個相互作用；其中與偏極對角線交互作用包含： (i)假如光線具有p偏極性，主要地透射通過對角線· (i i)假如光線具有S偏極性，主要地由對角線反射· 本發明矣一項為提供光學系統，其包含：， (a) 偏極光束***器以形成兩束偏極光線； (b) 二向色菱鏡，其接收其中一束光束； (c) 光學路徑補償器，其接收另一束光束；(d) 至少一個光線濾波器，其與光學路徑長度之補償器結合。在特定實施例中，至少一個光線濾波器包含兩個光線濾波器於補償器相對側邊，一個為通過短波濾波器，即通過較短波長之濾波器，以及另外一個為通過長波濾波器，即通過較長波長之濾波器。如底下詳細說明，本發明達成多種優點，其包含經由使用較低價格二向色及/或濾波器作為色彩分離而降低價格，故由至少部份以及在一些實施例中完全地回復偏極性提昇請先閲讀背之注意事項再填本頁訂 Ψ 本紙浪尺度適用中國國家標準（CNS) A4規格（21〇χ297公釐） 524993 A7 B7 五、發明説明（經濟部中央標準局員工消費合作社印製冗度，以及傳送至觀看银幕光線在，丨開丨丨及丨丨關,丨圖素間為高度對比。附圖簡單說明：、第-圖（圖1)為先前技術使用三個反射性LCD板在轴線投射系統、之示意圖。第-圖（圖2)為本發明實施例示意圖，其使用兩個頻道偏極，***器，其能夠提供完整回復偏極性。、第二至五圖（圖3至5)為本發明實施例示意圖，其使用兩個由偏極光.束***立方體所構成之偏極光束***器。圖 3顯不出形成影狀光線路彳^圖_示&，，外漏，f偏極性之光線路徑通過立方體26A，簡及脱之”照明，，對肖線以及圖5顯示出”夕卜漏”偏極性之光線路徑通過立方體戰脱及 26D之'’顯像”對角線。第六圖（圖6)顯示出本發明實施例，其經由使用半波板朝向45度或135度而達成高度對比。第七圖（圖7)顯示出半波板朝向45度或丨35度之效應，其中虛線顯示板快速（或緩慢)軸方向，'水平軸顯示入射光線之偏極悻，垂直轴顯示透射光線之偏極性。，第八圖（圖8)合併表1及2顯示出圖6配置達成高對比值。為了清楚地顯示，顯示該附圖參考數字與圖6中所使用情況相同。第九圖（圖9)顯示出圖6實施例之變化，其中只使用半波板=三個立方體之間以構成本發明偏極光束***器。第十圖（1U0)顯示出本發明實施例，其使用三個液晶本纸張尺度適用中)以祕（21〇^^公们 9 ' (請先閱讀背面之注意事項再填寫本頁)The orientation of the printed wave plate by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs will turn S-polarized light into p-polarized light. Sexual light will be converted into s-polarized light; · ,, and P-polarized light sources and two pixel plates Between each—the pixel board, the light interacts with two polarized diagonal lines, one with s-polarized light and one with p-polarized light; and 夂 2) Per-mesh and 鄕 through class, the light interacts with the polar domain of the two domains, there is one interaction with the s partial polar line and another interaction with the P partial polar light; which interacts with the partial polar diagonal The effects include: (i) if the light has p-polarity, mainly transmitted through the diagonal · (ii) if light has S-polarity, mainly reflected by the diagonal · One aspect of the present invention is to provide an optical system, which Contains: (a) a polarized beam splitter to form two polarized beams; (b) a dichroic mirror that receives one of the beams; (c) an optical path compensator that receives the other beam; (d) at least one light filter, And the optical path length compensator binding. In a specific embodiment, at least one light filter includes two light filters on opposite sides of the compensator, one is passed through a short-wave filter, that is, a filter with a shorter wavelength, and the other is passed through a long-wave filter, that is, Filters that pass longer wavelengths. As described in detail below, the present invention achieves a number of advantages, including lowering the price by using lower-priced dichroic and / or filters as color separations, so the partial-polarity improvement is fully restored at least in part and in some embodiments Please read the precautions on the back before filling in this page. The paper size is applicable to the Chinese National Standard (CNS) A4 (21 × 297 mm) 524993 A7 B7 V. Invention Description (Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs) Redundancy, and the light transmitted to the viewing screen are highly contrasted between 丨 on 丨丨 and 丨丨 off, and 丨 pixels. Brief description of the drawings:, Figure-Figure (Figure 1) is the prior art using three reflective LCD Schematic diagram of the plate projecting system on the axis. Figure-(Figure 2) is a schematic diagram of an embodiment of the present invention, which uses two channel polarities, splitter, which can provide complete recovery of polarities. Figures 2 to 5 ( 3 to 5) are schematic diagrams of an embodiment of the present invention, which uses two polarized beam splitters composed of polarized beam and beam splitting cubes. Figure 3 does not show the formation of a shadow-like optical line 彳 ^ Figure_shows, leakage, f-polarity light path through cube 26A, Jane ’s “illumination”, Xiao line and Figure 5 show “Xibu Leak” light path with polarized light through cube And 26D's "development" diagonal. The sixth figure (Figure 6) shows an embodiment of the present invention, which achieves a high contrast by using a half-wave plate facing 45 degrees or 135 degrees. The seventh figure (Figure 7) Shows the effect of the half-wave plate facing 45 degrees or 35 degrees, where the dotted line shows the fast (or slow) axis direction of the plate, 'the horizontal axis shows the polarization of the incident light, and the vertical axis shows the polarization of the transmitted light. Figure (Figure 8) Merging Tables 1 and 2 shows that the configuration of Figure 6 achieves a high contrast value. For clear display, the reference numerals of this figure are shown to be the same as those used in Figure 6. The ninth figure (Figure 9) shows the figure A variation of the embodiment 6 in which only a half-wave plate = between three cubes is used to constitute the polarized beam splitter of the present invention. The tenth figure (1U0) shows an embodiment of the present invention, which uses three liquid crystal paper sizes In use) Yi Mi (21〇 ^^ 公人 9 '(Please read the note on the back first (Please fill in this page if you have any questions)

、1T %·. 524993 A7 B7 經濟部中央榇準局員工消費合作社印製五、發明説明於矽元件（例如三個LCoS)上。最第十-圖（圖11)顯示出圖10實施例不同頻道之色彩重 —附圖提_成本發明說明書之—部份，其鱗出本發之實施例，以及隨著說明作為解釋本發明之原理。人們^ 解附圖以及5兒明為解說性以及並不作為限制本發明。附圖元件符號說明：偏極光束》裂5第—側邊1;偏極光束***器第二側邊2,偏極光束***器第三側邊3;偏極光束***器第四側邊4;偏極光束***器5;偏極光束***器對角線6，了;反射性LCD 8, 9;紅色反射性LCD 10;綠色反射性LCD12;藍色反射性LCD 14;光源16;傳統偏極光束***器（pBS)立方體 18;色彩立方體2〇;投射透鏡22;偏極光束***立方體2臥，26B，26C; 26D;小型偏極光束***立方體26S;大型偏極光束***立方體26L;半波板28;片狀偏極器30;紅色反射性LCoS 32;綠色反射性lc〇SD 34;藍參反射性lcd 36;彩色二向色立方體（二向色菱鏡）38;補償器4〇;輸出至投射透鏡光線10P。詳細說明：如先前所說明，本發明提供光學条統以使用於反射性 LCD。已知該裝置”開”圖素將s偏極性改變為p偏極性以及將P偏極性改變為S偏極性，同時”關"圖素將使入射光線之偏極性保持為未被改變。各種已知形式或發展出反射性LCD能夠加以使用於本本纸張尺度適用中國國家標準（CNS )八4胁（2!〇><297公们 (請先閱讀背面之注意事項再填寫本頁)、 1T% ·. 524993 A7 B7 Printed by the Consumer Cooperatives of the Central Government Bureau of the Ministry of Economic Affairs. 5. Description of the invention On silicon devices (such as three LCoS). The tenth-most figure (Figure 11) shows the color emphasis of the different channels of the embodiment of Figure 10-part of the description of the invention-part of the description of the invention, the embodiment of the present invention, and the description as an explanation of the invention The principle. People ^ understand the drawings and 5 are illustrative and are not intended to limit the present invention. Description of the symbols of the drawing elements: polarized beam> "5th split-side 1"; second polarized beam splitter 2; third polarized beam splitter 3; fourth polarized beam splitter 4 Polarized Beam Splitter 5; Polarized Beam Splitter Diagonal 6; Reflective LCD 8, 9; Red Reflective LCD 10; Green Reflective LCD 12; Blue Reflective LCD 14; Light Source 16; Traditional Polarization Polar beam splitter (pBS) cube 18; color cube 20; projection lens 22; polarized beam splitter cube 2 lying, 26B, 26C; 26D; small polarized beam splitter cube 26S; large polarized beam splitter cube 26L; half Wave plate 28; sheet polarizer 30; red reflective LCoS 32; green reflective lCoSD 34; blue ginseng reflective lcd 36; color dichroic cube (dichroic diamond mirror) 38; compensator 4 ; Output to the projection lens light 10P. DETAILED DESCRIPTION: As explained previously, the present invention provides optical strips for use in reflective LCDs. It is known that the device "on" the pixel changes the s-polarity to the p-polarity and the P-polarity to the S-polarity, while the "off" pixel will keep the polarization of the incident light unchanged. Various Known forms or developed reflective LCDs can be used in this paper. Applicable Chinese National Standards (CNS). Applicable to the Chinese National Standards (CNS) Ya 4 4 (2! 〇 > < 297) (Please read the precautions on the back before filling this page. )

524993 . A7 ____；__一—一 B7 五、發明説明（β) 發明實施射。-般情況，本發明能夠使用各種形式反射性轉變偏極性之圖素板，不論是否使用液晶材料以達成偏極性變化。為了減化說明，整個說明書中使用名稱，人們了解使用該名稱並非在於限制本發明之範圍。本發明系統能夠採用兩個或三個反射性LCD。LCD入射光線偏極性能夠保持為相同的（例如圖9)或不相同的（例如圖2, 3,及6)。 ' 在兩個LCD糸統情況下，使用色彩轉輪以產生完整色彩影像。人們了解影像品質主要依靠綠色光線，主要色彩強度之傳統比值為^:6=30:60:10。因而，一項兩個1^〇之系統為使用一個LCD作為綠色頻導以及另一個lcd與色彩轉輪結合作為紅色/藍色頻道。該方式產生光線損耗約為2〇%，即0· 5*(30+10)=20%。為了保持銀幕上白色光線所需要之色/JEL，紅色/藍色色彩轉輪可包含綠色滤波器以由該頻道捕捉一些綠色色彩。可加以變化，色彩轉輪能夠位於光源與偏極光束***器之間，該***器包含兩個操作於完整色彩之LCD板。' 經濟部中央標準局員工消費合作社印製不使用色彩轉輪，可使用三個反射性LCD，以及一個或多個二向色菱鏡及/或二向色反射鏡及/或色彩濾波器以產生紅色，綠色，及藍色頻道。在該情況下，由偏極光束*** 為產生之一條光束將使用於綠色頻道以及另一條光束*** 紅色及藍色頻道之間。當使用二向色菱鏡以分離紅色及藍色頻道時，一個光學路徑長度補償器優先地包含於綠色頻道中（例如圖10)。本紙張Α4· ( 2HTX297公¥7 10524993 A7 B7 五、發明説明（q ) 經濟部中央標準局員工消费合作社印製先前一般性說明為背景性說明，本發明藉由下列非限 .制性範例更完整地加以說明。範例1: 本發明等一範例性實施例顯示於圖2中。該實施例使用··（1)偏極光束***器5,其具有側邊1，2, 3,及4以及對角線6及7; (2)光源（照明器）16;以及⑶反射性LCD 8及9。如圖2所示，.具有S偏極性光線(實線)在每一對角線處被反射，同時具有P偏極性光線(虛線)透射通過每一對角線。在該方式下，可達成完全使用由照明器發射出光線，即可達成完全地使偏極性回復。特別地，由光源16發射不規則偏極性之光線被分離為s 偏極性以及P偏極性光線於偏極光束***器5之對角線6處。3偏極性由對角線6反射以及由對角線7第二次反射後將照射LCD 8。由LCD 8”開”圖素反射光線改變偏極性成為p 偏極光線，其通過對角線7及6以及進入投射透鏡(並未顯示於圖2中）。由”關’’圖素反射光線並不會改變偏極性以及由對角線7及6反射回去進入照明器16。、由光源發出P偏極性傳送通過對角線6及7以及照射lcd 9。在由該LCD"開”圖素反射後,p偏極性光線改變其偏極性成為S偏極性光線。該光線由對角線7反射以及由對角線6 第二次反射後進入投射透鏡。由LCD 9!’關”圖素反射光線並不會改變偏極性以及被反射回去進入照明器。為了形成彩色影像於銀幕上，系統能夠使用色彩轉輪於偏極光束***器5之照明側1上。可加以變化，系統能夠524993. A7 ____; __ 一 — 一 B7 V. Description of invention (β) Invention implementation. -In general, the present invention can use various forms of reflective polarized pixel panels, regardless of whether a liquid crystal material is used to achieve the polarized change. In order to reduce the description, a name is used throughout the specification, and it is understood that the use of the name is not intended to limit the scope of the present invention. The system of the present invention can use two or three reflective LCDs. The polarity of the incident light from the LCD can be kept the same (for example, Figure 9) or different (for example, Figures 2, 3, and 6). 'In the case of two LCD systems, use the color wheel to produce a full-color image. People understand that the image quality mainly depends on green light, and the traditional ratio of the main color intensity is ^: 6 = 30: 60: 10. Therefore, a two 1 ^ 0 system uses one LCD as a green pilot and the other LCD combined with a color wheel as a red / blue channel. The light loss generated by this method is about 20%, that is, 0.5 * (30 + 10) = 20%. To maintain the color / JEL required for white light on the screen, the red / blue color wheel may include a green filter to capture some green colors from this channel. It can be changed. The color wheel can be located between the light source and the polarized beam splitter. The splitter consists of two LCD panels operating in full color. '' Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs does not use a color wheel, three reflective LCDs, and one or more dichroic mirrors and / or dichroic mirrors and / or color filters can be used to Generates red, green, and blue channels. In this case, one beam split from the polarized beam split will be used between the green channel and the other beam split between the red and blue channels. When using a dichroic mirror to separate the red and blue channels, an optical path length compensator is preferentially included in the green channel (see Figure 10). This paper A4 · (2HTX297, ¥ 7 10524993 A7 B7 V. Description of the invention (q) The previous general description printed by the Employees' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs is a background illustration. The present invention uses the following non-limiting examples. Complete explanation. Example 1: An exemplary embodiment of the present invention is shown in Fig. 2. This embodiment uses (1) a polarized beam splitter 5 having sides 1, 2, 3, and 4 And diagonal lines 6 and 7; (2) light sources (illuminators) 16; and (3) reflective LCDs 8 and 9. As shown in FIG. 2, S polarized light (solid lines) at each diagonal It is reflected and at the same time has P polarized light (dotted line) transmitted through each diagonal. In this way, it is possible to achieve complete use of the light emitted by the illuminator, and it is possible to achieve complete recovery of the polarized polarity. In particular, by The light of the irregular polarized light emitted by the light source 16 is separated into s-polarized and P-polarized light at the diagonal line 6 of the polarized beam splitter 5. The polarized light is reflected by the diagonal line 6 and the diagonal line 7 After the second reflection, it will illuminate the LCD 8. The reflected light from the "on" pixels of the LCD 8 will change the polarization to p Polarized light that passes through diagonal lines 7 and 6 and enters the projection lens (not shown in Figure 2). Reflecting light from "off" pixels does not change the polarized light and the diagonal lines 7 and 6 The reflection goes back to the illuminator 16. The P-polarity emitted by the light source is transmitted through the diagonal lines 6 and 7 and the illuminated LCD 9. After being reflected by the LCD " on " pixels, the p-polarity light changes its polarity and becomes S-polarity Polar light. This light is reflected by the diagonal 7 and enters the projection lens after the second reflection by the diagonal 6. The light reflected by the LCD 9! 'Off' pixels does not change the polarity and is reflected back into the illuminator. In order to form a color image on the screen, the system can use a color wheel on the illumination side 1 of the polarized beam splitter 5. It can be changed and the system can

(請先閱讀背面之注意事項再填寫本頁)(Please read the notes on the back before filling this page)

、1T Φ 524993 A7 B7, 1T Φ 524993 A7 B7

五、發明説明（P 使用三個反射性LCM列如綠色LCD於光束***器側邊2上以 .及紅色及藍色LCD於光束***器側邊1±，紅色及藍色s偏極 =線使用彩色二向色立方體(二向色菱鏡)加二離形式立方體顯示於圖10以及說明於底下。，貫際上，LCD能夠黏附至偏極光束***器5。同時場透鏡能夠使用於每-LCD之前以減小偏極光束***哭之尺寸。假如需要情況下，場透鏡能夠黏附至偏極光束***器。圖2構造之優點包含:⑴能夠使用由照明器發射兩種偏極性統，其將提高銀幕上.亮度；⑵系統為緊凑的；以及 (3)系統顯著地提高偏極光束***器之偏極化效率以及提供高度對比於銀幕上，目為由照明器發出光線傳送至lcd光線與偏極光束***器對角線相互作用二次及通過lcd與投射透鏡間光線亦與對角線相互作用二次。〃該項優點將在下面範例中顯示出。假如由LCD"關,，圖. ，素發出2%"不正確"偏極性滲透過對角線，不正確偏極性光線與第二對角線相互作用之總效應將使不正確偏極性光線到達銀幕上之數量被減小至〇_ 04%，即0. 02*0. 〇2=〇. 〇〇〇4。因而圖2系統能夠是減少需要額外偏極器以提昇對比。範例2: 經濟部中央擦準局負工消費合作社印裝圖5顯示出本發明第二範例性實施例。該實施例為第一實施例之形式，除了下列改變：（1)使用偏極光束***立方體26A，26B，26C，及26D;(2)使用片狀偏極器30於偏極光束***立方體相鄰表面之間；以及（3)使用半波板28於偏極光束***立夯體相鄰表面之間。本纸張尺度適用中國國家襟準（CNS ) A4規格（21 〇29*7公麓） 524993 A7 B7 2 n 五、發明説明（經濟部中央襟準局員工消費合作社印製 ^圖3-5顯示出p及s偏極性光線由光源16通過偏極光束 ***器5到達投射透鏡(並未顯示出）之光線路徑。實際上圖^員示出LCD”開”圖素發出光線之偏極性。如先前所^明在開狀恶下，LCD將改變反射光線之偏極性。被反射光線將形成影像於銀幕上。旦圖4顯示出滲透通過菱鏡5照射部份之偏極效應。當少里不正確偏極性通過菱鏡對角線或被反射以及到達[^，該光線將被’1關”圖素反射（偏極性並未變化）以及將到達銀幕，其將減小系統之對比。圖5顯示出偏極性渗透通過菱鏡5影像部份之效應。在該情況下，照射光線由LCD”關”圖素反射。假如一些光線滲透通過曼鏡之對角線或被反射，該光線將到達銀幕以及減小對比。片狀偏極器30抑制該滲透照明同時將使形成影像光線到達銀幕，如下列說明： (1) 在立方體A與B間片狀偏極器之指向將透射p偏極性以及吸收S偏極性。其將透射有用的光線（圖3)以及吸收不需要的光線於立方體A與B之間（圖4)。 (2) 在立方體c與D間片狀偏極器之指向將透射p偏極性以及吸收S偏極性。其將透射有用的光線（圖3)以及吸收不需要的光線於立方體C與D之間（圖5)。 (3) 在立方體A與C間片狀偏極器之指向將透射s偏極性以及吸收P偏極性。其將透射有用的光線（圖3)以及吸收不需要的光線於皂方體A與C之間（圖4)。本纸張尺度適用中國國冬標準（CNS ) A4規格（21〇 X 297公楚）1Ψ (請先閱讀背面之注意事項再填寫本頁) 524993 . 五、發明説明（ A7 B7 經濟部中央標準局員工消費合作社印製、⑷在立方體_間片狀偏極器之指向將透射3偏極性以及吸收P偏極性。其將透射有用的光線（圖3)以及吸收不需要的光線於立方體B與D之間（圖5)。一半波板邙作為扭曲光線偏極性滲漏之補償器。由這些半波板提供之補償機能為制於美_532727隱專利中，其中使用四分之一波板功能為加倍路徑。半波板使用於圖3-5菱鏡5中，目為光線只一次通過立方體A，B，c，及D。範例3: 對於圖2及3配置，在下列情況將發生機械干涉：⑴投射透鏡與LCD之間，其共同位於菱鏡5之側邊2上;及/或（2) 妝明系統與LCD之間，其共同位於菱鏡5之側邊1上。顯不於圖6中本發明第三範例性實施例能夠加以使用以去除該干涉而不會增加菱鏡之尺寸。如該圖中所示从⑶ 8及9由投射以及照明系統所在位置之菱鏡側邊前及後移動至菱鏡側邊因而避免機械干擾之問題。如下列所說明，其構造實施例將達成高度對比。如圖3實施例所示，半波板28使用於圖6實施例中。並不處理該扭#光線，這些半波板之快速以及慢速軸加以定向以控制偏極性以及因而提昇對比。特別地，半波板定向使得圖6水平軸與半波板快速或慢速軸間之角度為45度及 130度。如圖7所示，該指向促使每一半波板旋轉通過平板光線偏極性之平面90度。特別地，由圖6燈泡16發出光線通過菱鏡第一對角線為 P偏極性以及偏極平面為水平指向。偏極性方向與半波板本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ΙΓ (請先閲讀背面之注意事項再填^ 524993 A7 B7 Μ 五、發明説明（0) 快速軸方向閛之夾角為r例如為45度。如圖7所示，半波板將旋轉偏極方向2r角度。在該情況下，通過半波板光線之光線偏極方向垂直地朝向，其相當於S偏極性。藉由相同機制，由於通過半波板入射於半波二上S偏極性被轉變為p偏極性。在該情況下，在燈泡與LCD路徑之間具有S偏極性光線被菱鏡對角、線反射一次（以及只有一次）。同樣地，在LCD與投射透鏡路徑之間具有S偏極性光線被菱鏡對角線反射— 次（以及只有-次）。傳統PBS立方體促使被反射§光線為高度消失比，即S光線大約99· 8%被反射以及只有〇· 2%通過對角線。因而，圖6構造在開圖素與關圖素之間達成非常高對比值。圖8及表1及2顯示出所達成之高對比值。如其中所示，圖6系統之估計偏極效率（對比）為1〇〇〇:1。注意表2只計算一個LCD 9頻道之光線強度。對LCD 8之計算為相同方式。貫際上，依據圖6製造出偏極光束***器實驗方式量測之對比值約為700:1。、經濟部中央標準局員工消費合作社印製如圖3!施例所示，片狀偏極器3〇能夠使用於圖6實施例中以提尚系統之對比。選擇這些片狀偏極器之指向以通過影像光線以及阻隔不需要的光線。所使用特定指向決定於半波板是否位於片狀偏極器之前或之後。假如菱鏡對角線偏極塗膜及/或半波板指向能夠產生適當對比，片狀偏極裔月匕夠省略以提鬲光線透射以及減小價格。範例4V. Description of the invention (P uses three reflective LCM columns such as a green LCD on the side 2 of the beam splitter and a red and blue LCD on the side of the beam splitter 1 ±, the red and blue s polarities = lines The use of a color dichroic cube (dichroic mirror) plus a two-way cube is shown in Figure 10 and illustrated below. In principle, the LCD can be attached to the polarized beam splitter 5. At the same time, the field lens can be used in each -LCD was previously used to reduce the size of polarized beam splitting. If needed, the field lens can be attached to the polarized beam splitter. The advantages of the structure of Figure 2 include: ⑴ The ability to use two types of polarized light emitted by the illuminator, It will increase the brightness on the screen; the ⑵ system is compact; and (3) the system significantly improves the polarization efficiency of the polarized beam splitter and provides a high contrast on the screen for the purpose of transmitting light from the illuminator to The LCD light interacts twice with the diagonal of the polarized beam splitter and the light interacts with the diagonal through the LCD and the projection lens. 优点 This advantage will be shown in the following example. If the LCD " ,, figure . The prime issue of 2% " incorrect " partial polarity penetrates the diagonal, the total effect of the interaction of the incorrect partial polar light and the second diagonal will reduce the number of incorrect partial polar light reaching the screen As small as 〇_04%, that is, 0.02 * 0. 〇2 = 〇. 〇〇〇4. Therefore, the system of Figure 2 can reduce the need for additional polarizers to improve contrast. Printing by Industrial and Commercial Cooperatives Figure 5 shows a second exemplary embodiment of the present invention. This embodiment is in the form of the first embodiment, except for the following changes: (1) Cubes 26A, 26B, 26C, and 26D are split using polarized beams (2) using a sheet polarizer 30 between adjacent surfaces of the polarized beam splitting cube; and (3) using a half-wave plate 28 between adjacent surfaces of the polarizing beam splitting vertical compact. Dimensions of this paper Applicable to China National Standards (CNS) A4 specifications (21 〇29 * 7 feet) 524993 A7 B7 2 n V. Description of the invention (printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ^ Figure 3-5 shows p and s The polarized light reaches the projection lens from the light source 16 through the polarized beam splitter 5 (not shown) The light path. In fact, the figure shows the polarity of the light emitted by the LCD "on" pixels. As previously explained, under the open state, the LCD will change the polarity of the reflected light. The reflected light will form an image at On the screen. Once Figure 4 shows the polarizing effect penetrating through the illuminating part of the Mirror 5. When Shari incorrectly polarizes through the Mirror's diagonal line or is reflected and reaches [^, the light will be '1 off' The pixel reflection (the polarization polarity has not changed) and it will reach the screen, which will reduce the contrast of the system. Figure 5 shows the effect of polarization polarization penetrating through the image part of the diamond mirror 5. In this case, the illumination light is from the LCD " Off "pixel reflection. If some light penetrates through the diagonal of the mirror or is reflected, the light will reach the screen and reduce contrast. The sheet polarizer 30 suppresses the penetrating illumination and at the same time allows the image-forming light to reach the screen, as described below: (1) The orientation of the sheet polarizer between cubes A and B will transmit p-polarity and absorb S-polarity. It will transmit useful light (Figure 3) and absorb unwanted light between cubes A and B (Figure 4). (2) The orientation of the sheet polarizer between cubes c and D will transmit the p-polarity and absorb the S-polarity. It will transmit useful light (Figure 3) and absorb unwanted light between cubes C and D (Figure 5). (3) The orientation of the sheet polarizer between cubes A and C will transmit the polarities of s and absorb the polarities of P. It will transmit useful light (Figure 3) and absorb unwanted light between soap cubes A and C (Figure 4). This paper size applies to China National Winter Standard (CNS) A4 specification (21〇X 297 Gongchu) 1Ψ (Please read the notes on the back before filling out this page) 524993. V. Description of the invention (A7 B7 Central Bureau of Standards, Ministry of Economic Affairs Printed by the employee consumer cooperative, the orientation of the sheet polarizer between cubes will transmit 3 polarities and absorb P polarities. It will transmit useful light (Figure 3) and absorb unwanted light to cubes B and D. (Figure 5). Half-wave plate 邙 is used as a compensator for polarized leakage of twisted light. The compensation function provided by these half-wave plates is made in the US_532727 patent, which uses the quarter-wave plate function The path is doubled. The half-wave plate is used in the diamond mirror 5 in Figure 3-5. The objective is that the light passes through the cubes A, B, c, and D only once. Example 3: For the configuration of Figures 2 and 3, the following situations will occur mechanical Interference: between the projection lens and the LCD, which is located on the side 2 of the diamond mirror 5; and / or (2) between the makeup system and the LCD, which is located on the side 1 of the diamond mirror 5 in common. The third exemplary embodiment of the present invention can be used in FIG. 6 to remove the It does not increase the size of the diamond mirror. As shown in the figure, from the CD 8 and 9 from the projection mirror and the side of the lighting system to the front and back of the diamond mirror side to avoid the problem of mechanical interference. As explained below, the structural embodiments will achieve a high degree of contrast. As shown in the embodiment of FIG. 3, the half-wave plate 28 is used in the embodiment of FIG. 6. The twisted #rays are not processed, and the speed of these half-wave plates is fast and slow. The axis is oriented to control the polarity and thus enhance the contrast. In particular, the half-wave plate orientation makes the angle between the horizontal axis of Figure 6 and the fast or slow axis of the half-wave plate to be 45 degrees and 130 degrees. As shown in Figure 7, this The orientation causes each half-wave plate to rotate through the plane of the polarized plane of the plate by 90 degrees. In particular, the light emitted by the bulb 16 of FIG. 6 passes through the first diagonal of the diamond mirror to be P-polarized and the plane of the polarized plane is oriented horizontally. The paper size of the paper and the half-wave board is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm) ΙΓ (Please read the precautions on the back before filling ^ 993 993 A7 B7 Μ 5. Description of the invention (0) Fast axis direction The included angle is, for example, 45 As shown in Figure 7, the half-wave plate will rotate in the polar direction by an angle of 2r. In this case, the polar direction of the light passing through the half-wave plate is oriented vertically, which is equivalent to the S-polarity. By the same mechanism, Since the S-polarity is converted to the p-polarity when incident on the half-wave two through the half-wave plate. In this case, the light with the S-polarity between the bulb and the LCD path is reflected diagonally and linearly by the diamond mirror (and only Once). Similarly, light with S-polarity between the LCD and the path of the projection lens is reflected diagonally by the diamond mirror-times (and only-times). The traditional PBS cube promotes the reflected light to a height vanishing ratio, which is S Approximately 99.8% of the light is reflected and only 0.2% passes through the diagonal. Thus, the Fig. 6 configuration achieves a very high contrast value between on and off pixels. Figure 8 and Tables 1 and 2 show the high contrast values reached. As shown therein, the estimated polarized efficiency (comparison) of the system of Fig. 6 is 1000: 1. Note that Table 2 only calculates the light intensity of one LCD 9 channel. The calculation for LCD 8 is the same. In general, the experimentally measured polarization ratio of a polarized beam splitter manufactured according to FIG. 6 is about 700: 1. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs As shown in the example in Figure 3, the sheet polarizer 30 can be used in the example of Figure 6 to compare the system. Select the orientation of these sheet polarizers to pass image light and block unwanted light. The specific orientation used depends on whether the half-wave plate is before or after the chip polarizer. If the diagonal mirror polarized polarizing film and / or half-wave plate pointing can produce proper contrast, the sheet polarized moonlight can be omitted to improve the light transmission and reduce the price. Example 4

(請先閲讀背面之注意事項再填寫本X) 訂 524993 Α7 Β7 五、發明説明（，γψ) 5 經濟部中央標準局員工消費合作社印製、圖9顯*出圖6實施例之變化，其中半波板只使用於構成本發明雜光束分_三偏非四個立方體間之界面處 ^對於該實施例，只有LCD 9由圖’3中位置移動。通常系統投射透鏡機械性干擾將比系統光源機械性干擾嚴重。在該情況下以及當一部份調變光線之對比值降低能夠忍受時可使用圖9之配置。範例5 先珂實施例顯示具有兩個LCD以及能夠使用色彩轉輪以產生色彩影像。圖10所顯示配置使用三個LCD(紅色，綠色，以及藍色），附於菱麟開表s以在產生彩色影像於銀幕上以及並不需要色彩轉輪。LGD優先地祕元件上液晶(IXqS)形式。由薄膜層所構成之彩色濾波器能夠位於每一LCD前菱， $之表面上以對三個頻道產生色彩平衡以及色彩純度。同時R/B能触置於二向色魏38與偏極絲***點之間界面處。紅色及監色LCD優先地位於一個偏極性頻道中以及綠色LCD在另一個偏極頻道中。該排列能夠藉由重疊綠色頻運所使用_與紅色與藍色頻道所使帛鱗而提高系統照明效率如圖11所示。由於細置，綠色光線無法辨認紅色及監色光線以及能夠利用低價格吸收或反射濾波器加以過濾以達到所需要色彩純度。除此，使用於R/B頻道中所使用二向色菱鏡38能夠為低斜率形式，因而減小價格。如先前所現明，薄膜濾波器能夠使用於每一藍色及紅色LCoS之前 I IP— (請先閱讀背面之注意事項再填寫本頁} 、=口 -¾. ^氏張尺度適财( 16524993 A7 B7 經濟部中央標準局員工消費合作社印製以清除任何錯誤色彩通過二向色菱個二向色對角線之殘餘光線。月=夠使用補償為以使綠色光學路徑長度實質上等於紅色及藍色轉之光學路徑長度。優先地，補償器包含兩個濾波器，每—側具有—個濾波器，其中-個為通過短波濾波器以及f外-㈣過長波濾波器，其組合只產生通過綠色之濾'波器。使用該形式兩個濾波轉較便宜的而比使用單一通過綠色濾波器便宜。假如需要情況下，補償器能夠以第二二向色菱鏡替代以及加入第四此至系統内。能夠使用該第四LC0S以提高到達銀幕上藍色光線之數量。可參_如日本 53922號專利。如圖10所示，偏極光束***立方體能夠具有不同的尺寸以減小通過菱鏡系統之光學路徑。在達成該情況時，偏· 極光束***點側邊具有梯級鱗平坦的構造。注意*** 器保持對稱於對角線6及7。雖然本發明特定實施例已加以說明及列舉出，人們能夠能夠作出變化但是並不會脫離本發明之精神與範圍。例如圖10中本伽實施例使用二向⑽鏡以及補償器以替代顯示於_巾本發明實施例，財式達成完整色彩影像能夠使用於本發明任何以及所有其他實施例中。 -热知此技術者了解上述所揭示能夠作出變化，但是其並不會脫離本發明之精神錢圍。這錢化均含#於下請專利範圍中。 ' (請先閲讀背面之注意事項再填寫本育) 訂本紙張適用中國國家蘇7^) ( 524993 Α7 Β7 五、發明説明（（b) ·/， ώ： …表1 . (請先閱讀背面之注意事項再填寫本頁) 偏極光束***立方體對角線偏極特性之一般值 Ρ偏極性透射 0.8 :S偏極性透射 0. 002 • Ρ偏極性反射 0.2 S偏極性反射 0. 998 . 表2 圖8中標示位置處光線強度 ‘光線位置 LCD'73n LCD’H” S P S Ρ Α光源後面 111 1 B透射過對角線0.002 0.8 0.002 0.8 C透射過半波板0.8 0.002 0.8 0.002 D 由對角線反射 0.8 0.0004 0.8 0.0004 E 由LCD反射 0·0 0· 8 0.8 0.0004 F 透射過對肖線64 G. G_ 0. 00032 G 透射過半波板 0. 64 0. 8E-6 0.00032 0.0016 .Η 由對角線反射 0.64 0.16Ε-6 0.00032 0.00032 菱鏡發出總光線 0.64 0.00064 經濟部中央標準局員工消費合作社印製本纸張尺度適用中國國家榇準（CNS ) Α4規格（210Χ297公釐） 1°((Please read the notes on the back before filling in this X) Order 524993 Α7 Β7 V. Description of the invention (, γψ) 5 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, Figure 9 shows the changes in the embodiment of Figure 6, where The half-wave plate is only used to form the interface between the stray beam split-three-biased and not-four cubes of the present invention. ^ For this embodiment, only the LCD 9 is moved from the position shown in FIG. Generally, the mechanical interference of the projection lens of the system will be more serious than the mechanical interference of the system light source. In this case and when a decrease in the contrast value of a part of the modulated light is tolerable, the configuration of Fig. 9 may be used. Example 5 The Senko embodiment shows that it has two LCDs and can use a color wheel to produce a color image. The configuration shown in Figure 10 uses three LCDs (red, green, and blue) attached to the Linglin meter to produce color images on the screen and does not require a color wheel. LGD prioritizes liquid crystal on LCD (IXqS). A color filter composed of a thin film layer can be located on the front surface of each LCD to generate color balance and color purity for three channels. At the same time, R / B can touch the interface between the dichroic Wei 38 and the split point of the polar wire. The red and monitor LCDs are preferentially located in one polarized channel and the green LCD is in another polarized channel. This arrangement can improve the lighting efficiency of the system by overlapping the scale used by the green frequency and the scale caused by the red and blue channels as shown in Figure 11. Due to the fine setting, the green light cannot recognize the red and monitor light and can be filtered with a low-priced absorption or reflection filter to achieve the required color purity. In addition, the dichroic mirror 38 used in the R / B channel can be in a low-slope form, thereby reducing the price. As previously shown, thin film filters can be used before each of the blue and red LCoS I IP— (Please read the precautions on the back before filling out this page} 、 = 口 -¾. ^ Zhang Zhang Shi Shi Cai (16524993 A7 B7 Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs to remove any residual color that passes through the dichroic diagonal dichroic diagonal. Residual light is sufficient to make the green optical path length substantially equal to red and The length of the optical path of the blue turn. Preferentially, the compensator contains two filters, one filter on each side, of which one is passed through the short-wave filter and the f-external-over-long wave filter, and the combination only produces Pass the green filter 'wave filter. Using this form of two filters is cheaper and cheaper than using a single pass green filter. If needed, the compensator can be replaced with a second dichroic diamond mirror and a fourth one added. Into the system. The fourth LC0S can be used to increase the number of blue rays reaching the screen. See, for example, Japanese Patent No. 53922. As shown in Figure 10, a polarized beam splitting cube can have The same size to reduce the optical path through the prism system. When this situation is achieved, the side of the splitting point of the polarized beam has a flat structure with step scales. Note that the splitter remains symmetrical to the diagonals 6 and 7. Although this The specific embodiments of the invention have been described and enumerated, people can make changes without departing from the spirit and scope of the invention. For example, in the embodiment of FIG. 10, a two-way mirror and a compensator are used instead of the In the embodiment of the present invention, the full color image of the financial style can be used in any and all other embodiments of the present invention.-Knowing that the skilled person understands the above disclosure and can make changes, but it will not depart from the spirit of the present invention. .This money is included in the scope of the following patents. '(Please read the notes on the back before filling in this education.) The bound paper is applicable to Chinese National Su 7 ^) (524993 Α7 Β7 V. Description of the invention ((b) · / ， FREE:… Table 1. (Please read the notes on the back before filling this page) General value of the polarization characteristics of the polarized beam split cube diagonal polarization P polarization transmission 0.8: S polarization Transmission 0. 002 • P polarized reflection 0.2 S polarized reflection 0. 998. Table 2 Light intensity at the position marked in Figure 8 'Light position LCD'73n LCD'H ”SPS Ρ Α 111 111 B is transmitted through the diagonal Line 0.002 0.8 0.002 0.8 C transmitted through the half-wave plate 0.8 0.002 0.8 0.002 D reflected by the diagonal 0.8 0.0004 0.8 0.0004 E reflected by the LCD 0 · 0 0 · 8 0.8 0.0004 F transmitted through the diagonal 64 G. G_ 0. 00032 G Transmitted through half-wave plate 0. 64 0. 8E-6 0.00032 0.0016 .Η Reflected by diagonal 0.64 0.16E-6 0.00032 0.00032 Total light emitted by diamond mirror 0.64 0.00064 Printed on paper scales applicable to employees' cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs China National Standard (CNS) Α4 Specification (210 × 297 mm) 1 ° (

Claims

524993 ABCD 8 六、申請專利範圍經濟部中夬標準局員工消費合作'社印製 1· 一種偏極光束***器，其具有第一，第二，第三，及第四側邊以及兩個偏極對角線，該對角線垂直地相交，***器對稱於母一對角線，其中具有S偏極性光線由每一對角線反射以及具有P偏極性光線透射通過每一對角線。 2·依據申請專利範圍第1項之偏極光束***器，其中第一，第二，第三，及第四側邊實質上為平坦的。 ^依據申請專利範圍第1項之偏極光束***器，其中第一， .第二，第三，及第四側邊為梯級的。 4·依據申請專利範圍第丨項之偏極光束***器，其中***㊣包含四個偏極光束***立方體，每一立方體沿著其兩個表面緊鄰另外兩個對角線。 5.依據申請專利範圍第4項之偏極光束***器，其中偏極光束***立方體為相同尺寸的。 6·依據申請專利範圍第4項之偏極光束***器，其中兩個立方體為第一尺寸以及兩個立方體為第二尺寸。 7 ·依據申請專利範圍第6項之偏極光束***器，其中兩個第一尺寸立方體位於沿著一條對角線以及兩個第二尺寸立體位於沿著另外一條對角線。 8·依據申請專利範圍第6項之偏極光束***器，其中更進一步包含片狀偏極器於至少兩個立方體相鄰表面之間。 9·依據申請專利範圍第8項之偏極光束***器，其中片極态位於所有四個立方體相鄰表面之間。 1〇·依據申請專利範圍第4項之偏極光束***器，其中更進步包含半波板於至少三個立方體相鄰表面之間。器狀偏 (請先閎讀背面之注意事項再填寫本頁} 訂 S Γα^. ( 524993 ABCD 9 經濟部中央標準局員工消費合作社印製六、申請專利範園 π·依據申請專利範圍第1〇項之偏極光束***器，其中每一半波板指向將使S偏極性光線轉變為p偏極性光線以及p偏 ’極性光:線轉變為S偏極性光線。 12·依據申請專利範圍第1〇項之偏極光束***器，.其中更進一步包含片狀偏極器於至少二個立方體相鄰表面之間。 13·依據申請專利範圍第1〇項之偏極光束***器，其中半波板位於所有四個立方體相鄰表面之間。 14·依據申請專利範圍第13項之偏極光束***器，其中每一半波板指向將使S偏極性光線轉變為p偏極性光線以及p偏極性光線轉變為S偏極性光線。 15·依據申請專利範圍第13項之偏極光束***器，其中片狀偏極為位於所有四個卑方體相鄰表面之間。 16.依據申請專利範圍第丨項之偏極光束***器，其中更進一步包含二向色菱鏡與部份第三側邊結合以及光學路徑長度補倾與部份第四側邊結合。 Π_依據申請專利範圍第16項之偏極光束***器，其中更進一步包含兩彳固反射性轉變偏極性圖當板與二向色菱鏡結合以及一個反射性轉變偏極性圖素板與光學路徑長度圖素板結合。 18·依據申請專利範圍第1項之偏極光束***器，其中更進一步包含第一二向色菱鏡與部份第三側邊結合以及第二二向 .色菱鏡與部份第四側'邊結合。 19.依據申請專利範圍第18項之偏極光束***器，其中更進一步含兩個反射性轉變偏極性圖素板與第一二向色菱鏡結本纸張尺度適用中國國家標準（CNS) M規格（210x297公釐） . — I (請先閎讀背面之注意事項再填寫本頁} 、一UXJ 524993 Α8 Β8 C8 D8 20 申請專利範圍合及二個反射性轉變偏極性gj素板與第二二向色菱鏡結合 20· —種光學系統，其包含： ⑸依據申請專利範圍第㈣之偏極光束***器；經濟部中央標準局員工消費合作社印製 (b)光源，提供I線到達偏極光束***器之部份第一側邊; (C)投射透鏡哺彳过線，該光線通過絲光束***器之部份第二側邊，該第二側邊相對於第一側邊；以及 (d)至少一個第一反射性轉變偏極性之圖素板以及第二反射性轉性之®素板，每_圖素板作為調變光線，該光線由光源通過投射透鏡。 21·依據申請專利範圍第2〇項之光學系統，其中第一圖素板與。卩伤第一側邊結合及第二圖素板與部份第二側邊結合。 22·依據申請專利範圍第2〇項之光學系統，其中至少一個圖素板與偏極光束***器之部份第三側邊或部份第四側邊結合。 23.依據申請專利範圍第2〇項之光學系統，其中至少一個圖素板與偏極光束***器之第三側邊結合以及另外一個圖素板與偏極光束***器之第四側邊結合。 24·依據申請專利範圍第2〇項之光學系統，其中偏極光束分裂器包含兩個半波板，其中每一半波板指向將使S偏極性光線轉變為Ρ偏極性光線以及ρ偏極性光線轉變為S偏極性光線，以及至少一些由投射透鏡接收之光線為通過兩個半波板之光線。 25·依據申請專利範圍第20項之光學系統，其中偏極光束分本紙張尺度適用中國国家樣準（CNS)八4祕（2似297公瘦） m mi —nil tm am.— m m m nn In— (請先閱讀背面之注意事項存填寫本貢) tr 524993 A8 B8 C8 D8 21 六、申請專利範圍經濟部中央標準局員工消費合作社印製裂器包含四個半波板，其中每一半波板指向將使3偏極性光線轉變為P偏極性光線以及P塢極性光線轉變為3偏極性光線，以及由投射透鏡接收之第一部份光線為通過四個半波板中兩個半波板之光線以及由投射透鏡接收之第二部份光線為通過四個半波板中另外兩個半波板之光線。 26·—種光學系統，其包含： (a) 偏極光束***器以產生兩束偏極光線； (b) 二向色菱鏡，其接收一束光線； (c) 光學路徑長度補償器，其接收另一束光線； (d) 至少一個光線濾波器與光學路徑長度補償器結合。 27·依據申請專利範圍第26項之光學系統，其中至少一個光線濾波器包含兩個光線濾波器於補償器相對兩側，一個為通過短波濾波器以及另一個為通過長波濾波器。 28·依據申請旱利範圍第26項之光學系統，其中兩個反射性轉’义偏極性圖素板與二向色菱鏡結合以及一個反射性轉變偏極性圖素板與光學路徑長度補償器結合。 29.種改良投射系統對比之方法，其使用至少一個反射性轉變偏極性之圖素板，包含通過光源發出光線到達圖素板，在圖素板處調變光線，及通過被調變光線到達投射透鏡，其中：，/、 (a) 在光源與投射透鏡間，至少一些光線通過兩個半波板，半波板朝向將使S偏極性光線轉變為p偏極性光線以及？偏極性光線轉變為S偏極性光線； (b) 在光源與圖素板間，光線與兩條偏極性對角線相互作524993 ABCD 8 VI. Patent application scope Printed by the Consumer Consumption Cooperative of the China Standards Bureau of the Ministry of Economic Affairs 1. A polarized beam splitter with first, second, third, and fourth sides and two polarizers A polar diagonal line that intersects perpendicularly, and the splitter is symmetrical to the female diagonal line, in which light having S-polarity is reflected by each diagonal and light having P-polarity is transmitted through each diagonal. 2. The polarized beam splitter according to item 1 of the scope of the patent application, wherein the first, second, third, and fourth sides are substantially flat. ^ The polarized beam splitter according to item 1 of the scope of patent application, wherein the first, second, third, and fourth sides are stepped. 4. The polarized beam splitter according to item 丨 of the application, wherein the splitting ㊣ includes four polarized beam splitting cubes, each of which is adjacent to two other diagonal lines along its two surfaces. 5. The polarized beam splitter according to item 4 of the patent application, wherein the polarized beam splitting cubes are the same size. 6. The polarized beam splitter according to item 4 of the patent application, wherein two cubes are of the first size and two cubes are of the second size. 7 • The polarized beam splitter according to item 6 of the patent application, wherein two first size cubes are located along one diagonal and two second size cubes are located along the other diagonal. 8. The polarized beam splitter according to item 6 of the patent application, which further includes a sheet polarizer between at least two adjacent surfaces of the cube. 9. A polarized beam splitter according to item 8 of the patent application, in which the slice state is located between adjacent surfaces of all four cubes. 10. The polarized beam splitter according to item 4 of the patent application, further comprising a half-wave plate between at least three adjacent surfaces of the cube. Device-shaped (please read the precautions on the back before filling out this page) Order S Γα ^. (524993 ABCD 9 Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 6. Application for Patent Park π · Based on the scope of patent application No. 1 The polarized beam splitter of item 〇, in which each half-wave plate is directed to convert S-polarized light into p-polarized light and p-polarized light: the line is converted into S-polarized light. 1 · According to the scope of patent application No. 1 The polarized beam splitter of item 0, which further includes a sheet polarizer between at least two adjacent surfaces of the cube. 13. The polarized beam splitter according to item 10 of the patent application scope, wherein the half wave The plates are located between adjacent surfaces of all four cubes. 14. A polarized beam splitter according to item 13 of the patent application, where each half-wave plate is directed to convert S-polarized light into p-polarized light and p-polarized The light is converted into S-polarized light. 15. The polarized beam splitter according to item 13 of the patent application scope, in which the sheet-shaped polarized electrodes are located between adjacent surfaces of all four cuboids. 16. According to the application The polarized beam splitter in the first item of the patent scope, which further includes a combination of a dichroic mirror and a part of the third side and a combination of the optical path length tilt and a part of the fourth side. Π_ According to the scope of patent application The polarized beam splitter of item 16, which further includes two fixed reflection polarized polarization maps when a plate is combined with a dichroic diamond mirror and a reflective converted polarized pixel plate is combined with an optical path length pixel plate 18. The polarized beam splitter according to item 1 of the scope of the patent application, which further includes a combination of a first dichroic mirror and a third side and a second dichroic mirror. Side-to-edge combination. 19. The polarized beam splitter according to item 18 of the scope of patent application, which further includes two reflective transition polarized pixel plates and the first dichroic diamond mirror. This paper is suitable for China. National Standard (CNS) M specification (210x297 mm). — I (Please read the precautions on the back before filling out this page}, one UXJ 524993 Α8 Β8 C8 D8 20 patent application scope and two reflective transition polarities g 20-type optical system combined with a j-plate and a second dichroic mirror, including: 偏 a polarized beam splitter according to ㈣ of the patent application scope; (b) light source printed by the staff consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Provide the I line to the first side of the polarized beam splitter; (C) The projection lens feeds through the line, and the light passes through the second side of the portion of the beam splitter. The second side is opposite to The first side; and (d) at least one pixel plate with a first reflective transition and a polar plate with a second reflective transition, each pixel plate serves as a modulation light, which is projected by the light source Lens 21. The optical system according to item 20 of the patent application scope, wherein the first pixel plate and. The first side edge is stung and the second pixel plate is bonded to part of the second side. 22. The optical system according to item 20 of the patent application scope, wherein at least one of the pixel plates is combined with part of the third side or part of the fourth side of the polarized beam splitter. 23. According to the optical system of claim 20, at least one pixel plate is combined with the third side of the polarized beam splitter and another pixel plate is combined with the fourth side of the polarized beam splitter . 24. The optical system according to item 20 of the patent application scope, wherein the polarized beam splitter includes two half-wave plates, and each half-wave plate is directed to convert S-polarized light into P-polarized light and ρ-polarized light Into S-polarized light, and at least some of the light received by the projection lens is light that passes through two half-wave plates. 25. The optical system according to item 20 of the scope of the patent application, in which the polarized beam beam paper size is applicable to China National Standard (CNS) Eighty Four Secret (2 like 297 male thin) m mi —nil tm am. — Mmm nn In — (Please read the precautions on the back and fill in this tribute first) tr 524993 A8 B8 C8 D8 21 VI. Application for Patent Scope The printed cracker of the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs contains four half-wave plates, each of which has a half-wave plate Pointing will convert 3 polarized light into P polarized light and P dock polar light into 3 polarized light, and the first part of the light received by the projection lens will pass through two half wave plates of the four half wave plates. The light and the second part of the light received by the projection lens are the light passing through the other two half-wave plates of the four half-wave plates. 26. An optical system comprising: (a) a polarized beam splitter to generate two polarized beams; (b) a dichroic mirror that receives one beam of light; (c) an optical path length compensator, It receives another beam of light; (d) at least one light filter is combined with an optical path length compensator. 27. The optical system according to item 26 of the patent application, wherein at least one of the optical filters includes two optical filters on opposite sides of the compensator, one for passing a short-wave filter and the other for passing a long-wave filter. 28. The optical system according to item 26 of the scope of application for profitability, in which two reflective transposed polarized pixel plates are combined with a dichroic diamond mirror and one reflective transposed polarized pixel plate and an optical path length compensator Combined. 29. A method for improving the contrast of a projection system, which uses at least one reflectively polarized pixel plate, comprising emitting light from a light source to the pixel plate, modulating the light at the pixel plate, and reaching through the modulated light Projection lenses, where: ,,, (a) Between the light source and the projection lens, at least some light passes through two half-wave plates, and the orientation of the half-wave plates will turn S-polarized light into p-polarized light and? Polarized light turns into S-polarized light; (b) Between the light source and the pixel plate, the light interacts with two diagonals of polarized light.

---------9 II (請先閲讀背面之注意事項再填寫本頁) 訂 524993 AS B8 C8 D8 申請專利範園 t、、=s偏極性光線進行一個相互作用以及具有p偏極性先線進行另一個相互作用；以及 (C)在圖素域投射透制，光、_兩條偏極性對角線相互作用，具有s偏極性光線進行—個相互作用以及具機極性光線進行另一個相互作用. 其中與偏極對角線交互作用包含·· ⑴假如光線具有P偏極性，±要地透射通過對角線； (11)假如光線具有s偏極性，主要地被對角線反射。 30.★-種改良投射系統對比之方法，其使用至少兩個反射性轉變偏極性之圖素板，包含通過光源發出光線到達兩個圖素板，在圖素板處調變光線，以及通過被調變光線到達投紐鏡，其中：一（a)在光源與投射透鏡間，第一部份光線通過第一及第二半波板以及第二部份光線通過第三及細半波板，每一半一波板朝向將使S偏極性光線轉變為p偏極性光線以及性光線轉變為S偏極性光線；偏極 (b) 在光源與兩個圖素板之每—圖素板間，光線與兩極性對角線相互作用，具有S偏極性光線進行一個相互作用以及具有P偏極性光線進行另一個相互作用；以及經濟部中央標準局員工消費合作社印製 (c) 在兩個圖素板之每一圖素板與投射透鏡間，光線與兩條偏極性對角線相互作用，具有S偏極性光線進行一個相互作用以及具有p偏極性光線進行另一個相互作用· 其中與偏極對角線交互作用包含： (i)假如光線具有p偏極性，主要地透射通過對角線· 本紙張尺度適用中國國家榡準（CNS ) A4現格（21OX 29>7公釐) 524993 ABCD 23 經濟部中央標準局員工消費合作社印製六、申請專利範圍 (ii)假如光線具有S偏極性，主要地被對角線反射。 (請先閱讀背面之注意事項再填寫本頁) 本纸張尺度適用中國國家榇準（CNS ) A4規格（210X297公釐）--------- 9 II (Please read the precautions on the back before filling out this page) Order 524993 AS B8 C8 D8 Patent Application Fan Park t ,, = s polarized light for an interaction and p-polarized The polar front line performs another interaction; and (C) is projected in the pixel domain, and the two polarized light diagonal lines interact with each other, with s-polarized light rays performing one interaction and organic polarized light rays. Another interaction. The interaction with the polar polar diagonal includes ... ⑴ If the light has P-polarity, ± is transmitted through the diagonal; (11) If the light has s-polarity, it is mainly diagonal reflection. 30. ★ -A method for improving the contrast of a projection system, which uses at least two reflective pixel plates that change polarities, including emitting light through a light source to the two pixel plates, modulating the light at the pixel plates, and passing The modulated light reaches the projection mirror, where: (a) between the light source and the projection lens, the first part of the light passes through the first and second half-wave plates and the second part of the light passes through the third and fine half-wave plates The orientation of each half-wave plate will transform S-polarized light into p-polarized light and sexual light into S-polarized light; (b) between the light source and each of the two pixel plates, the pixel plate, Light interacts with the bipolar diagonal, one interaction with S-polarized light and another interaction with P-polarized light; and printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (c) on two pixels Between each pixel plate of the panel and the projection lens, the light interacts with two polarized diagonal lines, one with S-polarized light and one with p-polarized light. The interaction between the middle and polar polar diagonal includes: (i) If the light has p polar polarity, it mainly transmits through the diagonal. This paper size is applicable to China National Standard (CNS) A4 (21OX 29 > 7 mm) ) 524993 ABCD 23 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 6. Scope of patent application (ii) If the light has S-polarity, it is mainly reflected by diagonal lines. (Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210X297 mm)