200821626 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種光學組件，尤其關於一種用於合併從 若干光源所發射之光線光束之光束合併器。 【先前技術】 照明系統、投影顯示系統及其他以光學為主之系統通常 包括複數個光學元件。此類系統的一關鍵光學元件係一光 束合併器。一光束合併器之功能係將不同光源之光束合併200821626 IX. Description of the Invention: The present invention relates to an optical component, and more particularly to a beam combiner for combining light beams emitted from a plurality of light sources. [Prior Art] Lighting systems, projection display systems, and other optically based systems typically include a plurality of optical components. A key optical component of such a system is a beam combiner. The function of a beam combiner combines the beams of different light sources
成一光束。例如，為了在一投影顯示系統中建立一白光束 之用途’可合併發射藍、紅及綠光（亦即，該等三原色）之 光源的光束。可使用若干方法形成一光束合併器。以下說 明此等方法之二。 方法係使用一二向分光鏡之配置合併該等光束。端視 所發射之光之波長，將反射或透射在一二向分光鏡入射之 光。在此類光束合併器中，該等面鏡之配置建立該等不同 光束的光徑，所以將其合併成一單一光束。 另一方法係使用一x立方體稜鏡，其係由四個三角形禮 鏡所構成的-稜鏡結.構，該四個三角形稜鏡係以一具有兩 邰刀反射對角表面之立方體之形式加以配置。在此類光束 合併器中，端視此等部分反射對角表面之塗層，可反射或 透射從該等㈣發射並將在料部分反射對角表面衝射之 光。當用於例如投影系絲主 ^糸、冼時，基於一 X立方體稜鏡之一光 束合併斋提供可定位該笑t 心i ^ 4先源之三個位置及光所退出的一 第四位置。 123664.doc 200821626 然而’除了一稜鏡或一面鏡之配置外’需要另外之光學 裝置’以便完成一操作光束合併器或例如一投影顯示系統 的一最終產物。美國2005/0219476揭示此一系統，其中使 用一 X立方體稜鏡，以合併從三個光再循環照明系統所發 射之光。於從該等再循環照明系統所發射之光線光束進入 該X立方體稜鏡前，該等光線光束通過光準直構件。在另 一具體實施例中，該光亦通過一分光稜鏡偏光器。 揭示於美國2005/0219476之投影顯示系統的一問題係要 求若干光學元件之對準，因此使此一系統之組裝變困難。 另一問題係每一個別組件在該系統中引入一功率損失，因 此導致低效率。 【發明内容】 本發明之一目的係減少上述先前技術問題及提供一種光 束合併益、’其較有效及/或較緊密及/或易於組裝，及/或其 致能退出該光束合併器之光線光束之控制。 本發明係基於以下之瞭解，可配置一光束合併器，使其 包括具有合併光束以外之另外功能性的一單一光學結構。 本發明的一基本想法係使用一起組裝至一整合稜鏡結構之 四個稜鏡，該整合稜鏡結構具有一立方體之形式並且具有 例如用以整形該光束之曲面。 根據本發明之ϋ面，其中提供_種光束合併器， 其包括配置於一稜鏡結構之四個稜鏡，該稜鏡結構具有其 中具部分反射對角表面之一立方體之形式，在不垂直於該 等部分反射對角表面所定義之平面之稜鏡結構之四面中， 123664.doc 200821626 將一面定義成一前面，而且配置該前面以外之至少二面， 以接收光線光束，該光束合併器將該等已接收光線光束合 併於在該前面退出該稜鏡結構的一光束中，其中配置該棱 鏡結構之至少一面，以整形該退出光束。 可配置將該稜鏡結構之面，以用於整形或準直該退出光 束。此外，可在該立方體之面配置透鏡，用於聚焦該等已Into a beam. For example, the purpose of creating a white light beam in a projection display system can incorporate beams of light sources that emit blue, red, and green light (i.e., the three primary colors). A beam combiner can be formed using several methods. The second of these methods is described below. The method uses a two-way beam splitter configuration to combine the beams. Looking at the wavelength of the emitted light, it will reflect or transmit the light incident on a dichroic beam splitter. In such beam combiners, the configuration of the mirrors establishes the optical paths of the different beams, so they are combined into a single beam. Another method uses an x-cube cymbal, which is composed of four triangular sacs, which are in the form of a cube with two knives reflecting the diagonal surface. Configure it. In such a beam combiner, the coatings that reflect the partially reflective diagonal surfaces may reflect or transmit light that is emitted from the (four) and that reflects the diagonal surface of the material. When used for, for example, a projection of a main wire, a beam of light is provided based on an X-cube, and the third position of the first source and the fourth position of the light exiting are provided. . 123664.doc 200821626 However, 'in addition to a configuration of one or a mirror, 'an additional optical device is required' to complete an operational beam combiner or a final product such as a projection display system. U.S. 2005/0219476 discloses such a system in which an X-Cube is used to combine the light emitted from the three light recycling illumination systems. The beams of light emitted from the recirculating illumination systems pass through the light collimating members before entering the X-Cube. In another embodiment, the light also passes through a split aperture polarizer. One problem with projection display systems disclosed in U.S. 2005/0219476 is the alignment of several optical components, thus making assembly of such a system difficult. Another problem is that each individual component introduces a power loss in the system, thus resulting in inefficiencies. SUMMARY OF THE INVENTION It is an object of the present invention to reduce the above prior art problems and to provide a beam combining benefit, which is more efficient and/or more compact and/or easier to assemble, and/or which enables light exiting the beam combiner Beam control. The present invention is based on the insight that a beam combiner can be configured to include a single optical structure having additional functionality beyond the combined beam. A basic idea of the invention is to use four turns assembled together into an integrated structure having a form of a cube and having, for example, a curved surface for shaping the beam. According to the aspect of the present invention, there is provided a beam combiner comprising four turns disposed in a meandering structure having a form of a cube having a partially reflective diagonal surface therein, not perpendicular In the four sides of the 稜鏡 structure of the planes defined by the partially reflective diagonal surfaces, 123664.doc 200821626 defines one side as a front side and at least two sides other than the front side to receive the light beam, the beam combiner will The received light beams are combined into a beam exiting the pupil structure in the front face, wherein at least one side of the prism structure is disposed to shape the exit beam. The face of the structure can be configured to shape or collimate the exit beam. In addition, a lens can be placed on the face of the cube for focusing on the
接收光線光束，或者用於聚焦該退出光束。換言之，本發 明提供一種用於將複數個光線光束合併於一退出光束中及 用於整形、準直與聚焦此退出光束之單一光學結構。 當與目前使用之光束合併器比較時，此單一元件光束合 併器之主要優點係其不要求與不同交互作用光學組件之任 何對準，因為主要功能性（準直、$焦及整形）係整合於一 光學結構中。另一優點係該光束合併器變得非常緊 雄’因而致能生產例如非常緊密之投影顯示系、统。另外， 將所有此等功能性整合於-單—結構中改良㈣效率，因 ^當與先前技術之光束合併器比較時，其減少總功率損 ”在本發明之另一具體實施例中，其中提供一種光束合存 其中配置在該錢結構的_或多個面之透鏡係一液^ 透鏡，用於選擇性變更該退出光束之焦點。因此，一㈣ :该相同照明系統可在一瞬間用以照明一整個房間，而卫 在另一瞬間用以當作一檯燈。 在本發明 器，其進一 之另-具體實施例中，其中提供—種光束合併 步包括配置在該前面以外之面以用於產生光線 123664.d〇< 200821626 光束之光源。此等光源可為例如發光二極體（LED(或雷射 二極體之單點光源。使用led及雷射二極體致能準備較使 用例如高壓燈之先前技術系統更小之光學系統，因為相較 於LED及雷射二極體，此等燈很龐大。LED及雷射二極體 之另一優點為：相較於其他光源，其光分佈相對較窄。因 此，相較於許多其他光源，LED及雷射二極體對光之準直 之要求較溫和。結果，可將基於LED及雷射二極體之光束 合併器與例如投影顯示系統中之高解析度成像裝置合併。 另外，可輕鬆控制例如波長及強度之LED&雷射二極體之 特徵。 一般而έ，該申請專利範圍中使用之所有術語係根據其 在該技術領域中的一般意義而解譯，除非本文另外明確定 義。對”一/一個/該[元件、裝置、組件、構件、步驟等]，，之 所有參考係參照該元件、裝置、組件、構件、步驟等之至 少一實例而開放地解譯，除非另外明確陳述。本發明之其 他目的、特點與優點將從下列詳細揭示内容、從所附之附 屬申請專利範圍以及從該等圖式顯現。 、 【實施方式】 參照圖1，將說明以下本發明之一第一具體實施例。 參照圖1，將四個稜鏡彼此相鄰而配置，以形成具有一 立方體形式的一稜鏡結構1〇(以下稱為一立方體稜鏡）。較 佳者該等四個稜鏡係三角形q旦亦可具有#他形狀。在本 具體實施許，1¾光束合併器— #包括具有三個不同 波長之三個光源£1、L2iL3。該等光源L1、L2及L3位在 I23664.doc 200821626 該立方體稜鏡10之面11、12及13，留下不具有光源的一面 14(以下稱為前面）。該立方體10之此等四面係不垂直於該 立方體稜鏡10之該等對角表面15及16之面。如可在圖i中 見到，配置該立方體稜鏡1 〇之面12，以準直從該光源L2出 來之光線光束201。類似地，可配置該等面11及丨3，以準 直分別從該等光源L1及L3出來之光線光束101及3〇1。此 外’可配置該等面11、12、13及14，以準直及整形退出該 立方體稜鏡10之光線光束400。在一較佳具體實施例中， 該立方體稜鏡1 〇之面11、12、13及14係曲狀，而且沿著該 立方體稜鏡10之每一面之水平、垂直以及對角方向可包含 若干不同曲率（未顯示）。 在一具體實施例中，如Unaxis所提供，將以標準，，DC藍，， 及"DC紅’’塗層塗布該稜鏡結構10之對角表面15及16。此一 DC藍塗層反射具有一 450 nm以下之波長之光，亦即，藍 光，而且透射具有一在510至800 nm範圍中之波長之光， 亦即，綠及紅光。類似地，該DC紅塗層反射具有一 650 nm以上之波長之光，亦即，紅光，而且透射具有一在4〇〇 至575 nm範圍中之波長之光，亦即，綠及藍光。在一玻璃/ 塗層/空氣配置中，此等塗層之反射係數在9〇至95%之範 圍中。然而’在例如本發明的一玻璃/塗層/玻璃配置中， 此等數值將稍微低些。熟悉此技術者將了解，可使用此處 表示之二塗層以外的其他塗層，而且使用之塗層可涵蓋其 他反射及透射範圍。 此外，可以分別適合用於該等光源Li、L2及L3之選定 123664.doc •10· 200821626 波長之透射層塗布該立方體稜鏡10之面u、12及13。較佳 者將以一覓帶通帶濾光片塗布該前面丨4，該寬帶通帶濾光 片用於透射從該等光源L1、L2及L3發射之所有波長。 熟悉此技術者將了解，可在該立方體稜鏡i 〇之對角表面 15與16上及該等面u、12、13及14上沉積一層以上，以便 改良該等塗層之品質。 如圖1中所說明，該光源L1以例如440 nm發射穿透該面 11進入該立方體稜鏡1 〇的一藍光束丨〇丨。然後該光束丨〇 ^將 在該對角表面16衝射並且反射，因此經由該前面14退出該 立方體稜鏡10。若該光束先在該對角表面15衝射，則其將 透射並且隨後在該對角表面〗6衝射，其將對該對角表面反 射。類似地，從該光源L3發射之紅光束3〇1將經由該面13 進入該立方體稜鏡1〇，而且然後對該對角表面15反射。若 該光束301先在該對角表面16衝射，則其將透射並且隨後 對該對角表面15反射。任何情況中，該紅光束3〇1最後將 穿透該前面14而退出該立方體稜鏡1〇。在本具體實施例 中，因為配置部分反射對角表面以用於反射藍及紅光束， 所以從該光源L2發射之綠光束201將經由該面12進入該立 方體稜鏡ίο，而且透射穿透該等對角表面15及16，最後經 由該前面14退出該立方體稜鏡10。結果，將該等藍、綠及 紅光束101、201及301合併在一起，以形成一退出光束 400，此情況中，其將導致一白光束。 當與包括複數個分離、非整合光學組件之系統比較時， 將例如整形及準直之若干不同功能性整合於一單一光學結 123664.doc -11 - 200821626 構中之事實減少光功率的招生 的知失。在基於例如面鏡之此類多 重組件光束合併器中，每_而於t ^ 母面鏡（或母一光學元件）引入該 面鏡之每侧至少1%的一功率指奂。 ▲田 刀手禎夭此忍謂，當使用三個 面鏡時’該系統具有一大约6〇/ 士变 ^ 八Α 6 /°之功率知失。將組件整合 於該立方體稜鏡1〇之面U、n 1 12 13及14内減少該光徑中之 光學介面數目，而且藉以減少該光功率損失。因此，本發 明之具體實施例全篇提供一種光束合併器i，彡中每一光 徑僅通過二面，例如對於該紅光束301，其係面13及14， 對於該盧光束11，其係面i i及14，或者對於該綠光束 201 ’其係面12及14，有利的是，其僅導致一大約2%之光 功率損失。 忒立方體稜鏡1 〇合併該等光束，但由於該等光源L丨、L2 及L3分別對該等面u、12及13發射光之角度可能互異，所 以僅該退出光束400之一斷面的一小部分將包括白光。可 在定位該等光源LI、L2及L3之面11、12及13配置透鏡，以 便使該等入射光束1〇1、2〇1及3〇1重合。相較於分離、使 用非整合組件以便於其進入該立方體稜鏡前準直該等入射 光束之光束合併器，在該立方體稜鏡10之面u、12及13之 透鏡可觀地縮小該光束合併器1的尺寸。此外，在此類多 重組件系統中，該等光源與該等準直組件間要求一相對較 大之距離，其進一步增加該光束合併器之尺寸。 在本發明之一具體實施例中，於該立方體稜鏡1〇之前面 14併入之透鏡係一液晶透鏡。此一透鏡使選擇性變更該退 出光束400之焦點成為可能，其致能調適成用於房間照明 123664.doc -12- 200821626 條件及閱讀照明條件兩者之照明系統之實施方案。 在又一另外具體實施例中，執行光源LI、L2及L3之對 準’以建立一均勻退出光束4〇〇。該退出光束之斷面之直 徑係藉由調整分別介於該等光源Li、L2及L3與該立方體 稜鏡10之面11、12及13間之距離加以控制。藉由調整分別 相對於該立方體稜鏡10之面u、12、13之光源L1、L2&L3 之位置及傾斜，可控制該退出光束4〇〇之角度及形狀。Receive a beam of light or focus on the exit beam. In other words, the present invention provides a single optical structure for combining a plurality of light beams into an exit beam and for shaping, collimating, and focusing the exit beam. The main advantage of this single component beam combiner is that it does not require any alignment with different interacting optical components when compared to currently used beam combiners, as the primary functionality (collimation, $focal, and shaping) is integrated. In an optical structure. Another advantage is that the beam combiner becomes very compact' thus enabling the production of, for example, very compact projection display systems. In addition, integrating all of these functionalities into a single-structure improves (four) efficiency, as it reduces total power loss when compared to prior art beam combiners," in another embodiment of the invention, wherein Providing a light beam coexisting a lens system-liquid lens disposed in the _ or a plurality of faces of the money structure for selectively changing a focus of the exiting light beam. Therefore, one (four): the same illumination system can be used in an instant To illuminate an entire room, and to serve as a light at another instant. In the present invention, in a further embodiment, wherein the beam combining step is provided to include a face other than the front face The light source used to generate light 123664.d〇< 200821626. These light sources can be, for example, light-emitting diodes (LEDs (or single-point sources of laser diodes). Preparation using led and laser diodes An optical system that is smaller than prior art systems such as high-pressure lamps because these lamps are very large compared to LEDs and laser diodes. Another advantage of LEDs and laser diodes is that they are compared to others. Light source The cloth is relatively narrow. Therefore, compared to many other light sources, LEDs and laser diodes have a milder requirement for collimation of light. As a result, beam combiners based on LEDs and laser diodes can be projected, for example, with projections. The high-resolution imaging devices in the system are combined. In addition, the characteristics of the LED & laser diodes such as wavelength and intensity can be easily controlled. Generally, all terms used in the scope of the patent application are based on the technical field thereof. In the general sense of the meaning, unless otherwise explicitly defined herein, reference to "a", "an element, device, component, component, step, etc.", all references are referenced to the element, device, component, component, step The other objects, features and advantages of the present invention will become apparent from the following detailed description, the appended claims and the appended claims. BEST MODE FOR CARRYING OUT THE INVENTION A first specific embodiment of the present invention will be described below with reference to Fig. 1. Referring to Fig. 1, four turns are arranged adjacent to each other to form A unitary structure in the form of a cube (hereinafter referred to as a cube 稜鏡). Preferably, the four 稜鏡-shaped triangles may also have a shape of #他。 In this embodiment, a 13⁄4 beam combiner - #Include three light sources £1, L2iL3 with three different wavelengths. The light sources L1, L2 and L3 are located at I23664.doc 200821626. The faces of the cubes 10, 11, and 13 leave the side without the light source. 14 (hereinafter referred to as the front). The four sides of the cube 10 are not perpendicular to the faces of the diagonal surfaces 15 and 16 of the cube 10, as can be seen in Figure i, the cube is configured 1 〇 face 12, to collimate the light beam 201 from the light source L2. Similarly, the faces 11 and 丨3 can be arranged to collimate the light beams 101 and 3 respectively from the light sources L1 and L3. 〇1. Further, the faces 11, 12, 13 and 14 can be configured to collimate and shape the light beam 400 exiting the cube 10. In a preferred embodiment, the faces 11, 12, 13 and 14 of the cube 1 are curved, and the horizontal, vertical and diagonal directions along each side of the cube 10 may include several Different curvature (not shown). In a specific embodiment, as provided by Unaxis, the diagonal surfaces 15 and 16 of the crucible structure 10 will be coated with standard, DC blue, and "DC red' coatings. The DC blue coating reflects light having a wavelength of 450 nm or less, that is, blue light, and transmits light having a wavelength in the range of 510 to 800 nm, that is, green and red light. Similarly, the DC red coating reflects light having a wavelength above 650 nm, i.e., red light, and transmits light having a wavelength in the range of 4 至 to 575 nm, that is, green and blue light. In a glass/coating/air configuration, the reflectance of these coatings is in the range of 9 〇 to 95%. However, in a glass/coating/glass configuration such as the present invention, these values will be somewhat lower. Those skilled in the art will appreciate that other coatings than those described herein can be used, and that the coatings used can cover other ranges of reflection and transmission. Further, it may be suitable for the selection of the light sources Li, L2, and L3, respectively. 123664.doc •10· 200821626 The transmission layer of the wavelength coats the faces u, 12, and 13 of the cube 稜鏡10. Preferably, the front face 4 is coated with a band pass filter for transmitting all wavelengths emitted from the sources L1, L2 and L3. Those skilled in the art will appreciate that more than one layer may be deposited on the diagonal surfaces 15 and 16 of the cube 及i 及 and on the faces u, 12, 13 and 14, in order to improve the quality of the coatings. As illustrated in Figure 1, the source L1 emits a blue beam 穿透 that penetrates the face 11 into the cube 以 1 以 at, for example, 440 nm. The beam 丨〇 ^ will then be shot and reflected at the diagonal surface 16 so that the cube 稜鏡 10 is exited via the front face 14. If the beam first strikes at the diagonal surface 15, it will transmit and then strike at the diagonal surface 6, which will reflect the diagonal surface. Similarly, the red light beam 〇1 emitted from the light source L3 will enter the cube 稜鏡1〇 via the face 13 and then be reflected by the diagonal surface 15. If the beam 301 is first directed at the diagonal surface 16, it will transmit and then reflect the diagonal surface 15. In any case, the red beam 3〇1 will eventually penetrate the front face 14 and exit the cube 稜鏡1〇. In this embodiment, since the configuration portion reflects the diagonal surface for reflecting the blue and red light beams, the green light beam 201 emitted from the light source L2 will enter the cube 经由ίο via the face 12, and the transmission penetrates the The diagonal surfaces 15 and 16 are equal, and finally the cube 稜鏡 10 is exited via the front surface 14. As a result, the blue, green and red beams 101, 201 and 301 are combined to form an exit beam 400, in which case it will result in a white beam. The fact that a number of different functionalities, such as shaping and collimation, are integrated into a single optical junction, 123664.doc -11 - 200821626, reduces the enrollment of optical power when compared to systems that include a plurality of separate, non-integrated optical components. Lost. In a multi-component beam combiner based on, for example, a mirror, a power director is introduced at least 1% on each side of the mirror for each of the t ^ maternal mirrors (or mother-optical elements). ▲ Tian Knife swears that when using three mirrors, the system has a power loss of about 6 〇 / 士 ^ Α 6 / °. Integrating the components into the face U, n 1 12 13 and 14 of the cube reduces the number of optical interfaces in the optical path and thereby reduces the optical power loss. Therefore, a specific embodiment of the present invention provides a beam combiner i, each of which has only two sides, for example, for the red beam 301, its planes 13 and 14, for the beam 11 Faces ii and 14, or for the green beams 201' of their faces 12 and 14, advantageously only result in a loss of optical power of about 2%.忒Cube 稜鏡1 〇 combines the beams, but since the angles of the light beams L丨, L2, and L3 for the equal faces u, 12, and 13 respectively may be different, only one section of the exit beam 400 A small part will include white light. The lenses can be arranged on the faces 11, 12 and 13 which position the light sources LI, L2 and L3 so that the incident light beams 1〇1, 2〇1 and 3〇1 coincide. Compared to the beam splitter that separates and uses the non-integrated components to collimate the incident beam before entering the cube, the lenses on the faces u, 12 and 13 of the cube 10 are considerably reduced by the beam combination. The size of the device 1. Moreover, in such multiple component systems, a relatively large distance is required between the sources and the collimating components, which further increases the size of the beam combiner. In one embodiment of the invention, the lens incorporated in front of the cube 1 is a liquid crystal lens. This lens makes it possible to selectively change the focus of the exit beam 400, which enables adaptation to an illumination system implementation for both room illumination and reading lighting conditions. In yet another embodiment, alignment of light sources LI, L2, and L3 is performed to establish a uniform exit beam 4〇〇. The diameter of the cross section of the exit beam is controlled by adjusting the distance between the light sources Li, L2 and L3 and the faces 11, 12 and 13 of the cube 10. The angle and shape of the exit beam 4 can be controlled by adjusting the position and tilt of the light sources L1, L2 & L3, respectively, relative to the faces u, 12, 13 of the cube 10.
以下說明一從雷射二極體光束之一合併所建立之退出光 束400之整形。 一雷射二極體通常具有一橢圓光束輪廓。使用沿著例如 該立方體稜鏡之-面之兩方向的不同曲率並且旋轉該雷射 二極體使其方位與其光分佈角度匹配致能—光束之擴圓輪 廓之變更。藉由調整一雷射二極體與該立方體稜鏡之一對 應面間之距離，可窄化該光束之㈣，而且可建立具有例 如-圓形斷面的一退出光束。可使用該光學元件之不同設 計亦即使用該立方體之面的不同類型曲率建立其他形狀。 有可能獲得例如方形、矩形或三角形之任何形狀之光束輪 廓。該整形之主要料係將該退出光束輪廓調適成該最終 應用。例如，-圓形光束輪靡適合用於一照明系統，而方 形、矩形與甚至三角形光束輪廓較適合用於射束器及抬頭 =益。端視該等面之曲率，亦可H體雷射之高斯 (:aussi:n)輪廊改變成一平頂輪廊。有利的是，此可用於 π明一疋義良好區域，其中照明之 等照明 L域的母一部分必需均 123664.doc 200821626 熟悉此技術者將了解，本發明之立方體稜鏡l 〇可結合任 何類型之光源L1、L2及L3而使用。在一具體實施例中， 使用發光二極體或雷射二極體。此等類型之光源很小，因 而致能緊密光束合併器。使用二極體之一優點係其發射具 有一窄光束分佈之光，因此致能建立一窄退出光束，可將 其引導至一螢幕上個別像素位置（該圖式中未顯示）。因The shaping of the exit beam 400 established by combining one of the laser diode beams is described below. A laser diode typically has an elliptical beam profile. The change in the rounded profile of the beam is made using different curvatures along the direction of the face of the cube, for example, and rotating the laser diode to match its orientation to its light distribution angle. By adjusting the distance between a laser diode and one of the faces of the cube, the beam can be narrowed (4) and an exit beam having, for example, a circular cross section can be created. Other shapes can be created using different designs of the optical element, i.e., using different types of curvature of the face of the cube. It is possible to obtain a beam profile of any shape such as a square, a rectangle or a triangle. The main material of the shaping is to adapt the exit beam profile to the final application. For example, a circular beam rim is suitable for use in an illumination system, while square, rectangular and even triangular beam profiles are more suitable for beamers and heads. Looking at the curvature of the faces, the Gaussian (:aussi:n) wheel gallery of the H-body laser can be changed into a flat-topped gallery. Advantageously, this can be used for a good area of π-ming, where the parent part of the illumination L-domain of the illumination must be 123664.doc 200821626 It will be understood by those skilled in the art that the cube 本l 〇 of the present invention can be combined with any type The light sources L1, L2, and L3 are used. In a specific embodiment, a light emitting diode or a laser diode is used. These types of light sources are small, resulting in a compact beam combiner. One advantage of using a diode is that it emits light with a narrow beam profile, thus enabling the creation of a narrow exit beam that can be directed to an individual pixel location on the screen (not shown in the figure). because
此，使用LED致能該光束合併器與例如LCD面板或LCOS面 板之高解析度成像裝置之合併。當與LED比較時，使用雷 射二極體甚至更佳，因為雷射光束本身係準直。因此，不 管該光束合併器與該顯示器間之距離，該影像維持銳利。 另外，在例如，使用三色彩之電視中使用雷射二極體增加 該光譜覆蓋範圍，而且幾乎達到人眼敏感之.光譜覆蓋範 圍，因為當與發射混合色彩之習知使用之螢光材料比較 時，雷射二極體發射分離色彩之光。 在本發明之另一具體實施例中，該等光源L1、L2&l3 分別發射藍、綠及紅光。此等係三原色，於通過該立方體 稜鏡10後，其導致適合用於投影顯示系統或照明應用的一 白退出光束400。然而，熟悉此技術者將了解，可使用其 他波長，而且可藉由紅、藍及綠以外之其他色彩之合併而 獲得一白退出光束4〇〇。 該立方體稜鏡10可使用例如研磨及拋光、熱玻璃壓印及 塑膠射出成型之習知方法加以製造。在某些情況中，於生 產程序期間直接併入位在該立方體稜鏡10之面u、U 及14之透鏡，因此提供用以生產該單—元件光束合併器的 123664.doc •14- 200821626 -低廉技術。在其他情況中，藉由使用光學透明黏著劑將 此等透鏡黏合至該立方體稜鏡1〇之面n、12、13及14於後 來新增此等透鏡。 ' 在-具體實施例中，—投影顯示系統係使用本發明的一 光束合併器1加以實現。使用配備曲面、透鏡及該等對角 表面與該等面之適當塗層的-光束合併器i僅需一掃描面 鏡用以完全實現該投影顯示系統。另夕卜，較佳者此一投影 顯示系統可具備例如LED或雷射二極體之光源，因為在該 顯不上輕鬆構成該影像所I求之空間冑變可藉由該等l肋 或雷射二極體之電性調變加以控制。當與該調變僅出現於 該顯示裝置中之系統比較時此很有利。 在另-具體實施例中，使用本發明的—光束合併器旧 供一種照明系統。 本發明可應用於例如電視、電腦、汽車工業及行動電話 中所應用之各種顯示技術，而且㈣於使用led或雷射二 極體之照明應用。 以上已參照若干明確揭示之具體實施例而主要說明本發 明°然而’如熟悉此技術者將輕易了冑，以上所揭示以外 之其他具體實施例同樣可能在如所則請專利範圍所定義 之本發明之範疇内。 【圖式簡單說明.】 透過本發明之較佳具體實施例之以上說明性及非限制之 詳細說明並且參照附圖將更加瞭解本發明之以上及額外目 的、特點與優點，其争： 123664.doc •15- 200821626 圖1係根據本發明之一具體實施例之一稜鏡結構的一俯 視圖，其包括配置成彼此相鄰以形成一具有兩部分反射對 角表面並且具有曲面之立方體之四個稜鏡。 【主要元件符號說明】 . 1 光束合併器 10 稜鏡結構/立方體稜鏡 11 立方體稜鏡10之面 12 立方體稜鏡10之面 • !3 立方體稜鏡10之面 14 立方體稜鏡10之面 15 對角表面 16 對角表面 101 光線光束 201 光線光束 301 光線光束 400 • 光線光束 L1 光源 L2 光源 ^ L3 光源 123664.doc -16-Thus, the use of LEDs enables the combination of the beam combiner with high resolution imaging devices such as LCD panels or LCOS panels. It is even better to use a laser diode when compared to an LED because the laser beam itself is collimated. Therefore, the image remains sharp regardless of the distance between the beam combiner and the display. In addition, the use of laser diodes in, for example, three-color televisions increases the spectral coverage and is almost spectrally sensitive to the human eye, as compared to conventionally used fluorescent materials for emitting mixed colors. The laser diode emits a separate color of light. In another embodiment of the invention, the light sources L1, L2 & l3 emit blue, green and red light, respectively. These are the three primary colors that, after passing through the cube 10, result in a white exit beam 400 suitable for use in projection display systems or lighting applications. However, those skilled in the art will appreciate that other wavelengths can be used and that a white exit beam can be obtained by combining other colors than red, blue and green. The cube crucible 10 can be manufactured using conventional methods such as grinding and polishing, hot glass stamping, and plastic injection molding. In some cases, the lenses located on the faces u, U and 14 of the cube 10 are directly incorporated during the production process, thus providing the 123664.doc •14-200821626 for producing the single-element beam combiner. -Low technology. In other cases, such lenses are added by adhering the lenses to the faces n, 12, 13 and 14 of the cubes using an optically clear adhesive. In a particular embodiment, the projection display system is implemented using a beam combiner 1 of the present invention. The use of a beam combiner i equipped with a curved surface, a lens and a suitable coating of the diagonal surfaces and the faces requires only a scanning mirror to fully implement the projection display system. In addition, it is preferred that the projection display system can be provided with a light source such as an LED or a laser diode, because the spatial variability of the image can be easily formed by the display or the rib or The electrical modulation of the laser diode is controlled. This is advantageous when compared to a system in which the modulation occurs only in the display device. In another embodiment, the beam combiner of the present invention is conventionally provided with an illumination system. The present invention is applicable to various display technologies applied to, for example, televisions, computers, the automotive industry, and mobile phones, and (d) to lighting applications using LEDs or laser diodes. The invention has been described above with reference to a number of specific embodiments disclosed herein. However, as will be readily apparent to those skilled in the art, other embodiments disclosed above may also be as defined in the scope of the claims. Within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The above and additional objects, features and advantages of the present invention will become more apparent from the detailed description of the preferred embodiments of the invention. Doc • 15 - 200821626 Figure 1 is a top plan view of a crucible structure in accordance with an embodiment of the present invention, comprising four cubes arranged adjacent to each other to form a cube having a two-part reflective diagonal surface and having a curved surface Hey. [Main component symbol description] . 1 Beam combiner 10 稜鏡 structure / cube 稜鏡 11 Cube 稜鏡 10 face 12 Cube 稜鏡 10 face • !3 Cube 稜鏡 10 face 14 Cube 稜鏡 10 face 15 Diagonal surface 16 Diagonal surface 101 Light beam 201 Light beam 301 Light beam 400 • Light beam L1 Light source L2 Light source ^ L3 Light source 123664.doc -16-