1352216 100年06月15日梭正#^c 、發明說明： 【發明所屬之技術領域】 [0001] 本發明關於一種投影光學系統，尤其係一種具有立體投 影顯示功能之立體投影光學系統。 【先前技術】 [0002] 近年來，圖像投影儀，尤其數位投影儀，作為向觀眾顯 示多種訊息之工具已經逐漸流行。一般，這些投影儀用 於將由電腦生成之圖像投影到螢幕上。對觀看者來說， 圖像投影儀投影之圖像通常看起來係平面二維圖像，除 圖像本身外無法顯示任何圖像景深訊息。這種顯示可以 適用於顯示多種訊息。但是，在某些情況下，觀看者希 望能有比二維顯示能夠更大程度地顯示圖像之景深或結 構特徵之投影儀。1352216 100th June, 100th, the present invention: [Technical Field] [0001] The present invention relates to a projection optical system, and more particularly to a stereoscopic projection optical system having a stereoscopic projection display function. [Prior Art] [0002] In recent years, image projectors, especially digital projectors, have become popular as tools for displaying a variety of messages to viewers. Typically, these projectors are used to project a computer generated image onto a screen. For the viewer, the image projected by the image projector usually looks like a flat two-dimensional image, and no image depth of field information can be displayed except the image itself. This display can be used to display a variety of messages. However, in some cases, the viewer desires to have a projector that can display the depth of field or structural features of the image to a greater extent than the two-dimensional display.
[0003] 使二維顯示之圖像能給出圖像景深之一種方式係通過立 體地顯示圖像。立體圖像，通常稱為“三維”或“3D” 圖像，在觀看者看來具有深度尺寸。這些圖像包括分開 的、疊合的左眼及右眼圖像》這些圖像設置成模仿人之 左右眼觀看時，由於人眼睛間隔引起之三維物體表面之 微小差別，而具有之景深圖像。左眼及右眼圖像係這樣 來顯示，即觀看者之右眼看不到左眼圖像，左眼看不到 右眼圖像。這種顯示方式一般借助於觀看者佩戴之光學 濾光鏡。 [0004] 通常顯示立體圖像之方式係使用兩個分開之圖像投影系 統分別來投影左眼圖像及右眼圖像。而這種系統在成功 地用於形成立體圖像之同時，系統之成本和重量則比單 096133435 表單編號A0101 第4頁/共18頁 1003213217-0 1352216 100年06月15日修正替換頁 個投影儀要高很多。而且，兩個投影儀要求光學對準相 對困難並比較費時。還有，由於這兩個系統之重量及體 積，使這種系統在兩個位置之間移動起來特別困難，還 有存在潛在之圖像對準之問題。 【發明内容】 [0005] 有鑒於此，有必要提供一種單個的能夠投影立體圖像的 立體投影光學系統。 [0006] 一種立體投影光學系統，其包括： [0007] 一第一偏振分束器，該第一偏振分束器用於將入射光分 成偏振狀態相互垂直之第一偏振光及第二偏振光； [0008] 兩個反射裝置，該兩個反射裝置都設置於所述第一偏振 分束器出射之第二偏振光之光路上；One way to enable an image of a two-dimensional display to give an image depth of field is by displaying the image in a stereoscopic manner. Stereoscopic images, often referred to as "three-dimensional" or "3D" images, have a depth dimension to the viewer. These images include separate, superimposed left and right eye images. These images are arranged to mimic the slight difference in the surface of a three-dimensional object caused by the spacing of the human eye when viewed from the left and right eyes of the person. . The left and right eye images are displayed such that the viewer's right eye does not see the left eye image and the left eye does not see the right eye image. This type of display is generally by means of an optical filter worn by the viewer. [0004] A method of displaying a stereoscopic image generally uses two separate image projection systems to project a left eye image and a right eye image, respectively. While this system is successfully used to form stereoscopic images, the cost and weight of the system is more than single 096133435 Form No. A0101 Page 4 / Total 18 Pages 1003213217-0 1352216 Correction of the replacement page projection on June 15, 100 The instrument is much higher. Moreover, the two projectors require optical alignment to be relatively difficult and time consuming. Also, due to the weight and volume of the two systems, it is particularly difficult to move such a system between two locations, with potential image alignment problems. SUMMARY OF THE INVENTION [0005] In view of the above, it is necessary to provide a single stereoscopic projection optical system capable of projecting a stereoscopic image. [0006] A stereoscopic projection optical system, comprising: [0007] a first polarizing beam splitter, the first polarizing beam splitter is configured to split incident light into first polarized light and second polarized light that are perpendicular to each other in a polarization state; [0008] two reflecting means, the two reflecting means are disposed on the optical path of the second polarized light emitted by the first polarizing beam splitter;
[0009] 一第一、第二穿透式空間光調制器，所述第一穿透式空 間光調制器設置於所述第一偏振分束器之第一偏振光之 出射方向上，所述第二穿透式空間光調制器設置於所述 兩個反射裝置之第二偏振光之出射方向上； [0010] 一個第二偏振分束器，該第二偏振分束器設置於所述第 一、第二穿透式空間光調制器之出射光之光路上； [0011] 從所述第一偏振分束器出射之第一偏振光被投射入第一 穿透式空間光調制器，該第一穿透式空間光調制器將該 第一偏振光調制成第二偏振光發射出去，並透過第二偏 振分束器反射出去； 096133435 從所述第一偏振分束器出射之第二偏振光被投射入所述 表單編號A0101 第5頁/共18頁 1003213217-0 [0012] 1352216 100年06月IS日辟正替換頁 兩個反射裝置’該兩個反射裝置改變第二偏振光之光路 ’將第二偏振光發射投射入第二穿透式空間光調制器， 該第二穿透式空間光調制器將該第二偏振光調制成第一 偏振光發射出去’該第一偏振光經過第二偏振分束器後 透射出去。 [0013] 上述之立體投影光學系統通過為第一、第二穿透式空間 光調制器分別輸入載有不同訊息之光，而該第一、第二 穿透式空間光調制器所形成之兩幅圖像分別以第一偏振 光及第二偏振光通過投影鏡頭投影出去，當觀看者之左 右眼分別戴上檢偏方向相互垂直之兩片偏振片，就可以 觀察到立體之圖像訊息。 [0014] [0015] 096133435 【實施方式】 下面將結合附圖’舉以下較佳實施例並配合圖式詳細描 述如下。 請參閱圖1，為本發明所提供之第一實施例之立體投影光 學系統10 0之結構示意圖》該立體投影光學系統丨〇 〇包括 沿光路方向依次設置之一光源元件11、一第一偏振分束 器12，分別没置於第一偏振分束器12不同出射光路上之 第一、第二反射裝置13、14，分別設置於所述第一、第 二反射裝置13、14之出射光路上之第一、第二穿透式空 間光調制^§15、16 ’ 一设置於所述第一、第二穿透式空 間光調制器15、16出射光路上之第二偏振分束器I?，以 及一設置於第二偏振分束器17出射光路上之投影鏡頭18 〇 所述光源元件1 1包括依光路設置之一照明光源1 Η、一色 表單编號A0101 第6頁/共18頁 1003213217-0 [0016] 1352216 100年06月15日 輪112以及~~積分器113。所述照明光源ill發射包括顯 示彩色圖像所需之紅光（R)、綠光（G)及藍光（B)之白光 。該光源丨1可以為i素燈、金屬鹵化物燈或氙燈等。在 本實施例中’該光源11為齒素燈。所述色輪112包括紅、 綠、藍三色區，其可在電機（圖未示）的帶動下高速旋轉 ’以給投影光路配以各種色彩。所述積分器113用來均勻 化及有效地使用光源11發出之光。 [0017] 所述第一偏振分束器（Polar izat ion Beam Spl i tter，[0009] a first and second transmissive spatial light modulator, wherein the first transmissive spatial light modulator is disposed in an outgoing direction of the first polarized light of the first polarizing beam splitter, a second transmissive spatial light modulator disposed in an exit direction of the second polarized light of the two reflecting devices; [0010] a second polarizing beam splitter, the second polarizing beam splitter being disposed on the first 1. The optical path of the outgoing light of the second transmissive spatial light modulator; [0011] the first polarized light emitted from the first polarizing beam splitter is projected into the first transmissive spatial light modulator, The first transmissive spatial light modulator modulates the first polarized light into a second polarized light and is reflected by the second polarizing beam splitter; 096133435 is emitted from the first polarizing beam splitter The polarized light is projected into the form number A0101. Page 5 of 18 pages 1003213217-0 [0012] 1352216 100 June 2006 IS replacement page Two reflecting devices 'The two reflecting devices change the second polarized light The optical path 'projects the second polarized light emission into the second transmissive spatial light Unit, the second transmission-type spatial light modulator modulating the second polarized light into a first polarized light emitted 'of the first polarized light after transmitting the second polarization beam splitter out. [0013] The stereoscopic projection optical system described above inputs two light beams carrying different signals for the first and second transmissive spatial light modulators, and the two formed by the first and second transmissive spatial light modulators. The image is projected by the first polarized light and the second polarized light through the projection lens. When the left and right eyes of the viewer wear two polarizing plates perpendicular to each other in the detection direction, the stereoscopic image information can be observed. [0015] [0015] [0015] [Embodiment] The following preferred embodiments will be described in detail below with reference to the accompanying drawings. 1 is a schematic structural diagram of a stereoscopic projection optical system 100 according to a first embodiment of the present invention. The stereoscopic projection optical system includes a light source component 11 and a first polarization sequentially disposed along an optical path. The beam splitter 12 is disposed on the first and second reflecting devices 13 and 14 respectively on the different outgoing light paths of the first polarizing beam splitter 12, and is respectively disposed on the first and second reflecting devices 13 and 14 First and second transmissive spatial light modulations on the road, a second polarization beam splitter I disposed on the exiting optical paths of the first and second transmissive spatial light modulators 15, 16 And a projection lens 18 disposed on the outgoing light path of the second polarization beam splitter 17 〇 the light source element 1 1 includes an illumination source 1 依, a color form number A0101, page 6 / 18 pages 1003213217-0 [0016] 1352216 On June 15th, 100th, the wheel 112 and the ~~ integrator 113. The illumination source ill emits white light including red (R), green (G), and blue (B) required to display a color image. The light source 丨1 may be an i-lamp, a metal halide lamp, a xenon lamp or the like. In the present embodiment, the light source 11 is a tooth lamp. The color wheel 112 includes red, green, and blue color regions that can be rotated at a high speed by a motor (not shown) to match the projection light path with various colors. The integrator 113 is used to homogenize and effectively use the light emitted by the light source 11. [0017] the first polarization beam splitter (Polar izat ion Beam Spl i tter,
PBS) 12用於將來自光源組件ii之非偏振光變成偏振方 向相互垂直之第一偏振光及第二偏振光，例如變成S偏振 光及P偏振光《該S偏振光被該第一偏振分束器12反射， 而P偏振光透過該第一偏振分束器12。該第一偏振分束器 12可以為金屬拇格型偏振片（Wire Grid Polarizer， 簡稱WGP偏振片），也可以為偏振分光棱鏡，在本實施例 中，該第一偏振分束器12為偏振分光棱鏡。 [0018] 所述第一、第二反射裝置13、14可以為一種反射鏡，設 置於所述第一偏振分束器12出射之光到下述之第二偏振 分束器17入射之光之光路上，其可分別設置於第一偏振 分束器12之兩條出射光路上，也可以都設置於所述第一 偏振分束器12出射之S、P偏振光之其中一條出射光之光 路上，用於改變第一偏振分束器12出射之S、p偏振光之 光路，以將該第一偏振分束器12之出射光耦合到第二偏 振分束器17中。在本實施例中，該第一、第二反射裝置 13、14分別設置於第一偏振分束器12出射之S、p偏振光 之出射光路上。如圖2所不，為另一種第·一、第二反射裝 096133435 表單編號 A0101 第 7 頁/共 18 頁 1003213217-0 1352216 100年06月15日修正替換j頁 置13、14之設置方法，其將該第一、第二反射裝置13、 14設置於第一偏振分束器12之S偏振光之出射光路上。當 然可以想到的疋’該第―、第二反射裝置13、14還可設 置於第一偏振分束器12之P偏振光之出射光路上。另外， 需要說明的是’該第-、第二反射裝置13、14可以設置 於所述第―、第二穿透式空間光調制器15、16之入射光 路上’也可以設置於其出射糾上。在本實施例中該 第-、第二反射農置設置於所述第―、第二穿透式空間 光調制器15、16之入射光路上。 [0019] 所述第-、第二穿透式空間光調制器15、16結構及工作 鲁 廣理基本相同’下面以第一穿透式空間光調制器15為例 來說明其結構及工作原理。 [0020] 所述第-穿透式空間光調制器15可以為液晶顯示裝置 (Liquid Crystal Dispaly，LCD)。所述第一穿逯 交間光調制器15通過控制輸人光之偏振狀態來調制入式 光炎給入射光加入空間訊息，形成包括該空間訊 射 過調制的出射光。所述空間訊息可以為所述第一穿透γ 变間光調制H15所載人之控制訊號電壓，該控制訊銳式 慶直接控制薄膜電晶體之開關狀態，再利用該薄棋電， 艏來控制所述液晶分子之偏轉狀態，而液晶分子具有曰曰 顧之光學各向異性，能夠控制來自入射光之光線月 實現為入射光載入圖像訊號之目的。在本實施例中，= 所述第一穿透式空間光調制器15對入射之3偏振光進 制，並在所述S偏振光上疊加空間訊息，以產生一包括調 間訊息之出射光，即包括有空間訊息之p偏振光。 096133435 表單編號Α0101 第8頁/共18頁 1〇〇3213217^〇 [0021] 1352216 振光被該第一穿透式空間 振分束器17發射出去。 |^〇〇?〇6^ 15a 光調制器15發射並透過第二偏 行調制，並在所述P偏振光所述p偏振 括空間訊息之出射光，即包括：0 δ α ’以產生 s偏振光被第二穿透式空間^間訊息^偏振光 振分束器17反射而發射出去_胃16^—^ 進 包 該 偏 [0022]PBS) 12 is for converting unpolarized light from the light source unit ii into first polarized light and second polarized light whose polarization directions are perpendicular to each other, for example, S-polarized light and P-polarized light. The S-polarized light is divided by the first polarized light. The beam splitter 12 reflects and the P-polarized light passes through the first polarizing beam splitter 12. The first polarization beam splitter 12 may be a metal Grid Polarizer (WGP polarizer) or a polarization beam splitter. In this embodiment, the first polarization beam splitter 12 is polarized. Splitting prism. [0018] The first and second reflecting means 13, 14 may be a kind of mirror, and the light emitted from the first polarizing beam splitter 12 is incident on the light incident by the second polarizing beam splitter 17 described below. The light path may be respectively disposed on two outgoing light paths of the first polarization beam splitter 12, or may be disposed on one of the S and P polarized lights emitted by the first polarization beam splitter 12 to emit light. On the way, the optical path of the S, p-polarized light emitted by the first polarization beam splitter 12 is changed to couple the outgoing light of the first polarization beam splitter 12 into the second polarization beam splitter 17. In the present embodiment, the first and second reflecting means 13, 14 are respectively disposed on the outgoing light paths of the S and p-polarized lights which are emitted from the first polarizing beam splitter 12. As shown in Fig. 2, it is another first and second reflective device 096133435. Form No. A0101 Page 7 of 18 1003213217-0 1352216 Correction of the setting method of replacing j pages 13 and 14 on June 15, 100, The first and second reflecting means 13, 14 are disposed on the outgoing light path of the S-polarized light of the first polarizing beam splitter 12. The first and second reflecting means 13, 14 which are of course conceivable are also disposed on the outgoing light path of the P-polarized light of the first polarizing beam splitter 12. In addition, it should be noted that 'the first and second reflecting means 13, 14 may be disposed on the incident optical path of the first and second transmissive spatial light modulators 15 and 16'. on. In the present embodiment, the first and second reflective agricultural devices are disposed on the incident optical paths of the first and second transmissive spatial light modulators 15, 16. [0019] The structures of the first and second transmissive spatial light modulators 15 and 16 and the operation of the Luguang are basically the same. The structure and working principle of the first transmissive spatial light modulator 15 are described below as an example. . [0020] The first through-space light modulator 15 may be a liquid crystal display device (LCD). The first cross-talking light modulator 15 modulates the polarization of the input light to modulate the entrance light into the spatial light to form the outgoing light including the spatially modulated overmodulation. The spatial information may be a control signal voltage of a person carried by the first penetrating gamma inter-space light modulation H15, and the control signal sharply controls the switching state of the thin film transistor, and then uses the thin chess, The deflection state of the liquid crystal molecules is controlled, and the liquid crystal molecules have optical anisotropy, and the light from the incident light can be controlled to achieve the purpose of loading the incident light into the image signal. In this embodiment, the first transmissive spatial light modulator 15 superimposes the spatial information on the incident three-polarized light, and superimposes the spatial information on the S-polarized light to generate an outgoing light including the inter-modulation message. That is, it includes p-polarized light with spatial information. 096133435 Form No. Α0101 Page 8 of 18 1〇〇3213217^〇 [0021] 1352216 The vibrating light is emitted by the first transmissive spatial vibration beam splitter 17. |^〇〇?〇6^ 15a The light modulator 15 emits and transmits the second bias modulation, and the p-polarized light exits the spatial information in the P-polarized light, that is, includes: 0 δ α ' to generate s The polarized light is reflected by the second transmissive space and the polarized light beam splitter 17 is emitted. _ Stomach 16^—^ Into the package [0022]
所边第二偏振分絲17與第1振分束H以結構及工 作原理基本相同，在此不再贅述。該第二偏振分束器17 設置於第-、第二穿透式空間光調制器15、16之 之光路上。由所述第—穿透式空間光調㈣15之出射光 即P偏振光透過該第二偏振分束器17發射出去而進入下述 之投影鏡頭16中H穿透式空間光調制器16的出射 光即S偏振光被5亥第二偏振分束器17反射而發射出去而進 入投影鏡頭18中，以被投影到螢幕上（圖未示）。The second polarization splitting wire 17 and the first vibration splitting beam H are substantially the same in structure and operation principle, and will not be described herein. The second polarization beam splitter 17 is disposed on the optical paths of the first and second transmissive spatial light modulators 15, 16. The P-polarized light emitted by the first transmissive spatial light modulation (4) 15 is transmitted through the second polarization beam splitter 17 to enter the projection lens 16 of the H-transmissive spatial light modulator 16 described below. The illuminating light, that is, the S-polarized light, is reflected by the 5 Hz second polarizing beam splitter 17 and emitted into the projection lens 18 to be projected onto the screen (not shown).
[〇〇23]所述投影鏡頭18設置於第二偏振分束器17之出射光的光 路上，用於將出射光所形成之圖像放大，並將放大之圖 像投影到螢幕上。 [0024]可以理解的是，為了進一步提高系統之對比度，還可以 在上述之立體投影光學系統中加入複數偏振片19，如圖 所示，該偏振片17可以讓一定偏振方向之光通過，而吸 收其他偏振方向之光，例如讓P偏振光通過，而吸收§偏 振光或者讓S偏振光通過’而吸收p偏振光。該多個偏振 片19的具體之放置位置可以為第一、第二偏振分束器12 ⑽6133435 表單編號A0101 第9頁/共18頁 1003213217-0 1352216 [0025] [0026] [0027] [0028] ' I !·〇〇年〇β月IS日桉正替換^ 、17之光路之間的任意位置。在本實施例中在第一所述 第〆穿透式空間光調制器15與第二偏振分束器17之間以 及第二穿透式空間光調制器16與第二偏振分束器丨7之間 都設置有偏振片19 » 請參閲圖4 ’為本發明提供之第二實施例之投影光學系統 200之結構示意圖。該立體投影光學系統200包括沿光路 方向依次設置之—光源元件21、一第一偏振分束器22， 分別設置於第一偏振分束器22不同出射光路上之第一、 第二反射裝置23、24，設置於所述第一、第二反射裝置 23、24之出射光路上之第一、第二穿透式空間光調制器 25、26 ’ 一設置於所述第一、第二穿透式空間光調制器 25、26出射光路上之第二偏振分束器27以及一設置於第 二偏振分束器17出射光路上之投影鏡頭28。 該第二實施例與第一實施例之不同在於所述第―、第二 偏振分束器22、27對S偏振光及P偏振光之作用不同。在 該第二實施例中，所述第一、第二偏振分束器22、27反 射P偏振光，而可以讓S偏振光透過各偏振分束器。而該p · 偏振光及s偏振光在各光學元件即第一偏振分束器22、第 一、第二穿透式空間光調制器25、26以及第二偏振分束 器27中之傳輸光路係相同的》 同理，為了進一步提高系統之對比度，還可以在第二實 施例之立體投影光學系統2〇〇中加入複數偏振片29，其設 置位置與第一實施例相同。 上述之立體投影光學系統通過為第一、第二穿透式空間 096133435 表單編號A0101 第10頁/共18頁 1003213217-0 1352216 100年06月15日修正替換頁 光調制器分別輸入載有不同訊息之光，而該第一、第二 穿透式空間光調制器所形成之兩幅圖像分別以P偏振光及 S偏振光或S偏振光及P偏振光通過投影鏡頭投影出去，當 觀看者之左右眼分別戴上檢偏方向相互垂直之兩片偏振 片，就可以觀察到立體之圖像訊息。[〇〇23] The projection lens 18 is disposed on the optical path of the outgoing light of the second polarization beam splitter 17 for amplifying the image formed by the outgoing light and projecting the enlarged image onto the screen. [0024] It can be understood that in order to further improve the contrast of the system, a plurality of polarizing plates 19 can be added to the above-mentioned stereoscopic projection optical system. As shown, the polarizing plate 17 can pass light of a certain polarization direction. Light that absorbs other polarization directions, such as passing P-polarized light, absorbs § polarized light or allows S-polarized light to pass through while absorbing p-polarized light. The specific placement position of the plurality of polarizing plates 19 may be the first and second polarization beam splitters 12 (10) 6133435 Form No. A0101 Page 9 / Total 18 pages 1003213217-0 1352216 [0025] [0028] [0028] ' I !·〇〇年〇β月 IS桉 is replacing any position between the light paths of ^ and 17. In the present embodiment, between the first pass-through transmissive spatial light modulator 15 and the second polarizing beam splitter 17 and the second transmissive spatial light modulator 16 and the second polarizing beam splitter 丨7 A polarizing plate 19 is disposed between each of them. Please refer to FIG. 4, which is a schematic structural view of a projection optical system 200 according to a second embodiment of the present invention. The stereoscopic projection optical system 200 includes a light source element 21 and a first polarization beam splitter 22 disposed in the optical path direction, and first and second reflecting means 23 respectively disposed on different outgoing light paths of the first polarization beam splitter 22 And 24, the first and second transmissive spatial light modulators 25, 26' disposed on the outgoing light paths of the first and second reflecting devices 23, 24 are disposed in the first and second penetrations The spatial light modulators 25, 26 exit the second polarization beam splitter 27 on the optical path and a projection lens 28 disposed on the exit path of the second polarization beam splitter 17. The second embodiment differs from the first embodiment in that the first and second polarization beam splitters 22, 27 have different effects on S-polarized light and P-polarized light. In the second embodiment, the first and second polarization beam splitters 22, 27 reflect P-polarized light, and allow S-polarized light to pass through the polarization beam splitters. And the transmission optical path of the p·polarized light and the s-polarized light in each of the optical elements, that is, the first polarization beam splitter 22, the first and second transmissive spatial light modulators 25 and 26, and the second polarization beam splitter 27. For the same reason, in order to further improve the contrast of the system, a plurality of polarizing plates 29 may be added to the stereoscopic projection optical system 2 of the second embodiment, and the arrangement position thereof is the same as that of the first embodiment. The stereoscopic projection optical system described above is provided by the first and second transmissive spaces 096133435, the form number A0101, the 10th page, the 18th page, the 1003213217-0 1352216, the 15th of June, the replacement page light modulator respectively input different messages. Light, and the two images formed by the first and second transmissive spatial light modulators are respectively projected through the projection lens with P-polarized light and S-polarized light or S-polarized light and P-polarized light, when the viewer The left and right eyes are respectively placed on two polarizing plates whose detection directions are perpendicular to each other, and the stereoscopic image information can be observed.
[0029] 综上所述，本發明符合發明專利要件，爰依法提出專利 申請。惟，以上所述者僅為本發明之較佳實施方式，本 發明之範圍並不以上述實施方式為限，舉凡熟悉本案技 藝之人士援依本發明之精神所作之等效修飾或變化，皆 應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0030] 圖1係本發明第一實施例之立體投影光學系統之結構示意 圖。 [0031] 圖2係圖1之立體投影光學系統之另一種結構之示意圖。[0029] In summary, the present invention complies with the requirements of the invention patent, and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0030] Fig. 1 is a schematic view showing the configuration of a stereoscopic projection optical system according to a first embodiment of the present invention. 2 is a schematic view showing another structure of the stereoscopic projection optical system of FIG. 1.
[0032] 圖3係在圖1之立體投影光學系統設置有複數偏振片之結 構示意圖。 [0033] 圖4係本發明第二實施例之立體投影光學系統之結構示意 圖。 【主要元件符號說明】 [0034] 立體投影光學系統：100、200 [0035] 光源組件：11、21 [0036] 照明光源：111 [0037]色輪：112 096133435 表單編號A0101 第11頁/共18頁 1003213217-0 1352216 10〕年06月15日核正替換百 [0038] 積分器：113 [0039] 投影鏡頭：18、28 [0040] 偏振片：19、29 [0041] 第一、第二反射裝置：13、14、23、24 [0042] 第一、第二偏振分束器：12、17、22、27 [0043] 第一、第二穿透式空間光調制器：15、16、25、26 096133435 表單編號A0101 第12頁/共18頁 1003213217-03 is a schematic view showing a structure in which a plurality of polarizing plates are disposed in the stereoscopic projection optical system of FIG. 1. 4 is a schematic structural view of a stereoscopic projection optical system according to a second embodiment of the present invention. [Main component symbol description] [0034] Stereoscopic projection optical system: 100, 200 [0035] Light source component: 11, 21 [0036] Illumination light source: 111 [0037] Color wheel: 112 096133435 Form No. A0101 Page 11 of 18 Page 1003213217-0 1352216 10] June 15th nuclear replacement 100 [0038] Integrator: 113 [0039] Projection lens: 18, 28 [0040] Polarizer: 19, 29 [0041] First and second reflection Apparatus: 13, 14, 23, 24 [0042] First and second polarization beam splitters: 12, 17, 22, 27 [0043] First and second transmissive spatial light modulators: 15, 16, 25 , 26 096133435 Form No. A0101 Page 12 of 18 1003213217-0