TW201932968A - Illumination system and projection apparatus - Google Patents
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Abstract
Description
本發明是有關於一種投影裝置，且特別是有關於具有一種照明系統的投影裝置。The present invention relates to a projection apparatus, and more particularly to a projection apparatus having an illumination system.
在雷射投影機的架構中，其主要透過藍光雷射光束來依序地照射螢光輪的螢光粉與反射區以輸出黃光與藍光。當藍光雷射光束照射螢光輪的螢光粉時，螢光粉被藍光雷射光束激發而發出黃光，分光鏡透過其波長範圍分離的特性將黃光沿著一方向傳遞至色輪。當藍光雷射光束照射螢光輪的反射區時，將藍光雷射光束沿著另一方向傳遞。並且藍光雷射光束再藉由投影機中的光學元件（反射鏡、透鏡）以及對應的光路設置，將藍光雷射光束重新導引至色輪。這樣的結構使用了大量的光學元件，而使整體的體積以及成本上升。In the architecture of a laser projector, it mainly illuminates the phosphor powder and the reflection area of the fluorescent wheel through the blue laser beam to output yellow light and blue light. When the blue laser beam illuminates the fluorescent powder of the fluorescent wheel, the fluorescent powder is excited by the blue laser beam to emit yellow light, and the spectroscope transmits the yellow light in one direction to the color wheel through the separation of its wavelength range. When the blue laser beam illuminates the reflective area of the fluorescent wheel, the blue laser beam is transmitted in the other direction. And the blue laser beam is redirected to the color wheel by optical elements (mirrors, lenses) and corresponding optical paths in the projector. Such a structure uses a large number of optical components, which increases the overall volume and cost.
為了解決上述的問題，一種做法是在投影機中設置具有分合光元件的反射元件，反射元件與分合光元件的表面作為反射面。當藍光雷射光束透過分合光元件以照射螢光輪的螢光粉時，螢光粉激發出的黃光被反射面反射而往一方向傳遞。當藍光雷射光束透過分合光元件以照射螢光輪的反射區時，藍光雷射光束依序被反射面反射而沿著與黃光的同一傳遞方向傳遞。這樣的作法是可以避免上述的問題，但是當黃光光束或藍光雷射光束傳遞至反射面時，部分的黃光光束或藍光光束會經由分合光元件而溢散至外界，而導致光學效率不良。In order to solve the above problem, one method is to provide a reflecting element having a light combining element in the projector, and the surface of the reflecting element and the light combining element serves as a reflecting surface. When the blue laser beam passes through the splitting light element to illuminate the fluorescent powder of the fluorescent wheel, the yellow light excited by the fluorescent powder is reflected by the reflecting surface and transmitted in one direction. When the blue laser beam passes through the splitting light element to illuminate the reflective area of the fluorescent wheel, the blue laser light beam is sequentially reflected by the reflecting surface and transmitted in the same transmission direction as the yellow light. In this way, the above problem can be avoided, but when the yellow or blue laser beam is transmitted to the reflecting surface, part of the yellow or blue light beam will overflow to the outside through the splitting light element, resulting in optical efficiency. bad.
“先前技術”段落只是用來幫助了解本發明內容，因此在“先前技術”段落所揭露的內容可能包含一些沒有構成所屬技術領域中具有通常知識者所知道的習知技術。在“先前技術”段落所揭露的內容，不代表所述內容或者本發明一個或多個實施例所要解決的問題，在本發明申請前已被所屬技術領域中具有通常知識者所知曉或認知。The "Prior Art" section is only intended to aid in understanding the present invention, and thus the disclosure of the prior art paragraphs may contain some conventional techniques that are not known to those of ordinary skill in the art. The matters disclosed in the "Prior Art" section do not represent the subject matter or the problems to be solved by one or more embodiments of the present invention, which are known or recognized by those of ordinary skill in the art prior to the present application.
本發明提供一種照明系統，其可使應用此照明系統的投影裝置體積較小且可使應用此照明系統的投影裝置具有良好的光學效率。The present invention provides an illumination system that allows a projection device to which the illumination system is applied to be small in size and that has a good optical efficiency for a projection device to which the illumination system is applied.
本發明提供一種照明系統，其體積小且具有良好的光學效率。The present invention provides an illumination system that is small in size and has good optical efficiency.
本發明的一實施例提供一種照明系統，包括激發光源以及波長轉換元件。激發光源提供激發光束。波長轉換元件具有波長轉換區域、反射區域以及透光區域。波長轉換區域以及反射區域形成環形區域，且透光區域被環形區域所圍繞，其中激發光束用於穿透波長轉換元件的透光區域。An embodiment of the invention provides an illumination system including an excitation source and a wavelength conversion element. The excitation source provides an excitation beam. The wavelength conversion element has a wavelength conversion region, a reflection region, and a light transmission region. The wavelength conversion region and the reflective region form an annular region, and the light transmissive region is surrounded by the annular region, wherein the excitation beam is used to penetrate the light transmissive region of the wavelength conversion element.
在本發明的一實施例中，照明系統還包括反射罩，具有焦點，其中波長轉換元件的波長轉換區域以及反射區域依序進入包括焦點的照射區域，反射罩在波長轉換元件上的正投影區域涵蓋波長轉換元件的透光區域的至少一部分。In an embodiment of the invention, the illumination system further includes a reflector having a focus, wherein the wavelength conversion region of the wavelength conversion element and the reflection region sequentially enter the illumination region including the focus, and the orthographic projection region of the reflector on the wavelength conversion element At least a portion of the light transmissive region of the wavelength conversion element is covered.
在本發明的一實施例中，照明系統還包括分合光鏡組，而分合光鏡組包括第一部分以及第二部分，第一部分與第二部分配置於激發光束的傳遞路徑上，其中，激發光束依序被第一部分導引至反射罩，再由反射罩導引至環形區域。In an embodiment of the invention, the illumination system further includes a split lens group, and the split lens group includes a first portion and a second portion, wherein the first portion and the second portion are disposed on a transmission path of the excitation beam, wherein The excitation beam is sequentially guided by the first portion to the reflector, and then guided by the reflector to the annular region.
在本發明的一實施例中，其中分合光鏡組與反射罩之間設置參考平面，且位於激發光束的傳遞路徑上，其中在參考平面上激發光束的光斑面積小於或等於反射罩在參考平面上的正投影面積的二分之一。In an embodiment of the invention, a reference plane is disposed between the splitting lens group and the reflector, and is located on the transmission path of the excitation beam, wherein the spot area of the excitation beam on the reference plane is less than or equal to the reflector in the reference. One-half of the orthographic area on the plane.
在本發明的一實施例中，其中反射罩包括第一反射部以及第二反射部，第一反射部相對於第二反射部遠離於波長轉換元件，第二反射部在波長轉換元件上的正投影區域涵蓋波長轉換元件的透光區域的至少一部分。In an embodiment of the invention, the reflector includes a first reflecting portion and a second reflecting portion, the first reflecting portion is away from the wavelength converting element with respect to the second reflecting portion, and the second reflecting portion is positive on the wavelength converting element The projection area encompasses at least a portion of the light transmissive region of the wavelength conversion element.
在本發明的一實施例中，其中反射罩具有拋物反射面，其中激發光束或轉換光束被反射罩的拋物反射面反射。In an embodiment of the invention, wherein the reflector has a parabolic reflecting surface, wherein the excitation beam or the converted beam is reflected by the parabolic reflecting surface of the reflector.
在本發明的一實施例中，其中波長轉換元件包括轉軸、環形基板以及透光部，環形區域對應位於環形基板上，透光部與轉軸對應位於透光區域，透光部分別與轉軸與環形基板連接。In an embodiment of the invention, the wavelength conversion component comprises a rotating shaft, a ring substrate and a light transmitting portion, wherein the annular region is correspondingly located on the annular substrate, the light transmitting portion and the rotating shaft are correspondingly located in the light transmitting region, and the light transmitting portion is respectively connected to the rotating shaft and the ring The substrate is connected.
在本發明的一實施例中，其中透光部為透明基板，透明基板的外徑大於或等於環形基板的內徑。In an embodiment of the invention, the light transmitting portion is a transparent substrate, and the outer diameter of the transparent substrate is greater than or equal to the inner diameter of the annular substrate.
在本發明的一實施例中，其中波長轉換元件還包括多個支撐部，每支撐部的一端與轉軸連接，每支撐部的另一端與環形基板連接。In an embodiment of the invention, the wavelength converting component further includes a plurality of supporting portions, one end of each supporting portion is connected to the rotating shaft, and the other end of each supporting portion is connected to the annular substrate.
在本發明的一實施例中，其中波長轉換元件中的環形區域與透光區域以共圓心的方式設置。In an embodiment of the invention, the annular region and the light transmissive region in the wavelength conversion element are disposed in a center of a circle.
在本發明的一實施例中，其中在激發光束傳遞至環形區域中的波長轉換區域的時間區間內，波長轉換區域被激發光束激發而發出轉換光束，轉換光束被反射罩反射，且部分轉換光束穿透透光區域的至少一部分，且被分合光鏡組的第一部分以及第二部分導引以沿方向傳遞，以將轉換光束輸出。在激發光束傳遞至環形區域中的反射區域的時間區間內，激發光束依序被反射區域與反射罩反射而穿透透光區域的至少一部分，且被分光合鏡組的第二部分導引以沿方向傳遞，以將激發光束輸出。In an embodiment of the invention, wherein the wavelength conversion region is excited by the excitation beam to emit a converted beam during the time interval in which the excitation beam is transmitted to the wavelength conversion region in the annular region, the converted beam is reflected by the reflector, and the converted beam is partially converted. At least a portion of the light transmissive region is penetrated and guided by the first portion and the second portion of the split lens group to be transmitted in the direction to output the converted beam. During a time interval in which the excitation beam is transmitted to the reflection region in the annular region, the excitation beam is sequentially reflected by the reflection region and the reflection cover to penetrate at least a portion of the light transmission region, and is guided by the second portion of the split optical lens group. Pass in the direction to output the excitation beam.
在本發明的一實施例中，其中激發光束依序被第一部分以及反射罩的第一反射部反射而傳遞至環形區域，其中在激發光束傳遞至環形區域中的波長轉換區域的時間區間內，轉換光束中的第一轉換子光束被第一反射部反射並穿透第一部分以導引沿方向傳遞，轉換光束中的第二轉換子光束被第二反射部反射並穿透透光區域的至少一部分以及第二部分以沿方向傳遞，在激發光束傳遞至環形區域中的反射區域的時間區間內，激發光束被第二反射部反射並穿透透光區域的至少一部分，且被第一部分與第二部分導引以沿方向傳遞。In an embodiment of the invention, wherein the excitation beam is sequentially transmitted by the first portion and the first reflection portion of the reflector to the annular region, wherein in the time interval during which the excitation beam is transmitted to the wavelength conversion region in the annular region, The first converted sub-beam in the converted beam is reflected by the first reflecting portion and penetrates the first portion to guide the transfer in the direction, and the second converted sub-beam in the converted beam is reflected by the second reflecting portion and penetrates at least the transparent region a portion and the second portion are transmitted in a direction, and during a time interval in which the excitation beam is transmitted to the reflection region in the annular region, the excitation beam is reflected by the second reflection portion and penetrates at least a portion of the light transmission region, and is subjected to the first portion and the first portion The two parts are guided to pass in the direction.
在本發明的一實施例中，其中激發光束穿透第一部分，且被反射罩的第一反射部反射而傳遞至環形區域，其中在激發光束傳遞至環形區域中的波長轉換區域的時間區間內，轉換光束中的第一轉換子光束被第一反射部反射並被第一部分反射以沿方向傳遞，轉換光束中的第二轉換子光束被第二反射部反射且穿透透光區域的至少一部分，且被第二部分反射以沿方向傳遞，在激發光束傳遞至環形區域中的反射區域的時間區間內，激發光束被第二反射部反射並穿透透光區域的至少一部分以被第二部分導引沿方向傳遞。In an embodiment of the invention, wherein the excitation beam penetrates the first portion and is reflected by the first reflection portion of the reflector to be transmitted to the annular region, wherein the excitation beam is transmitted to the wavelength conversion region in the annular region within a time interval The first converted sub-beam in the converted beam is reflected by the first reflecting portion and reflected by the first portion to be transmitted in the direction, and the second converted sub-beam in the converted beam is reflected by the second reflecting portion and penetrates at least a portion of the transparent region And being reflected by the second portion to transmit in the direction, the excitation beam is reflected by the second reflection portion and penetrates at least a portion of the light transmission region to be the second portion in a time interval in which the excitation beam is transmitted to the reflection region in the annular region The guide is transmitted in the direction.
在本發明的一實施例中，其中分合光鏡組還包括第三部分，第三部分配置於激發光束的傳遞路徑上，其中在激發光束傳遞至環形區域中的反射區域的時間區間內，激發光束中的第一激發子光束被第二部分反射以沿方向傳遞，激發光束中的第二激發子光束穿透第二部分並被第三部分反射以沿方向傳遞。In an embodiment of the invention, wherein the splitting lens group further comprises a third portion, the third portion is disposed on the transmission path of the excitation beam, wherein in the time interval during which the excitation beam is transmitted to the reflection region in the annular region, The first excitation sub-beam in the excitation beam is reflected by the second portion to transmit in the direction, and the second excitation sub-beam in the excitation beam penetrates the second portion and is reflected by the third portion to be transmitted in the direction.
本發明的一實施例提供一種投影裝置，包括上述的照明系統、濾光元件、至少一光閥以及投影鏡頭。其中濾光元件配置於來自照明系統的轉換光束或激發光束的傳遞路徑上，用於形成照明光束。投影鏡頭配置於影像光束的傳遞路徑上。An embodiment of the invention provides a projection apparatus comprising the above illumination system, a filter element, at least one light valve, and a projection lens. The filter element is disposed on a transmission path of the converted beam or the excitation beam from the illumination system for forming an illumination beam. The projection lens is disposed on the transmission path of the image beam.
基於上述，在本發明實施例中的照明系統與投影裝置中，由於反射罩涵蓋此透光區域的至少一部分，因此被反射罩反射的轉換光束或者是激發光束可以透過此透光區域出射而被分合光鏡組導引以沿同一方向傳遞。因此，相較於相關技術，本實施例的照明系統與投影裝置可以以較少的光學元件以及較小的體積以達到將激發光束與轉換光束導引至同一方向的效果。Based on the above, in the illumination system and the projection device in the embodiment of the present invention, since the reflector covers at least a portion of the light-transmitting region, the converted beam or the excitation beam reflected by the reflector can be emitted through the light-transmitting region. The split mirror group guides to transmit in the same direction. Therefore, compared with the related art, the illumination system and the projection apparatus of the present embodiment can achieve the effect of guiding the excitation beam and the conversion beam to the same direction with fewer optical elements and a smaller volume.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。The above described features and advantages of the invention will be apparent from the following description.
有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之一較佳實施例的詳細說明中，將可清楚的呈現。以下實施例中所提到的方向用語，例如：上、下、左、右、前或後等，僅是參考附加圖式的方向。因此，使用的方向用語是用來說明並非用來限制本發明。The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.
圖1A是本發明的一實施例的投影裝置在第一時間區間內的光路示意圖。圖1B是圖1A的投影裝置在第二時間區間內的光路示意圖。圖2是圖1A與圖1B中的波長轉換元件的前視示意圖。圖3是圖1A與圖1B中的波長轉換元件的剖面示意圖。圖4A是圖1A與圖1B中的分合光鏡組的第一部分的放大示意圖。圖4B是第一部分的光學層的光譜圖。圖5A是圖1A與圖1B中的分合光鏡組的第二部分的放大示意圖。圖5B是第二部分的光學層的光譜圖。圖6是圖1A與圖1B中的濾光元件的前視示意圖。1A is a schematic view of an optical path of a projection apparatus according to an embodiment of the present invention in a first time interval. 1B is a schematic view of the optical path of the projection apparatus of FIG. 1A in a second time interval. 2 is a front elevational view of the wavelength conversion element of FIGS. 1A and 1B. 3 is a schematic cross-sectional view of the wavelength conversion element of FIGS. 1A and 1B. 4A is an enlarged schematic view of a first portion of the split lens assembly of FIGS. 1A and 1B. Figure 4B is a spectrogram of the optical layer of the first portion. Figure 5A is an enlarged schematic view of a second portion of the split lens assembly of Figures 1A and 1B. Figure 5B is a spectrogram of the optical layer of the second portion. Figure 6 is a front elevational view of the filter element of Figures 1A and 1B.
請參照圖1A以及圖1B，在本實施例中，投影裝置200包括照明系統100、濾光元件210、勻光元件220、至少一光閥230以及投影鏡頭240。照明系統100用於輸出光束至光閥230。照明系統100包括激發光源110、波長轉換元件120、反射罩130以及分合光鏡組140。於以下的段落中會詳細地說明上述的各元件。Referring to FIG. 1A and FIG. 1B , in the embodiment, the projection apparatus 200 includes an illumination system 100 , a filter element 210 , a light homogenizing element 220 , at least one light valve 230 , and a projection lens 240 . The illumination system 100 is used to output a beam of light to the light valve 230. The illumination system 100 includes an excitation source 110, a wavelength conversion element 120, a reflector 130, and a split optics group 140. The above elements will be explained in detail in the following paragraphs.
在本發明實施例中所指的激發光源110係泛指為可發出短波長光束的光源，短波長光束的峰值波長（Peak Wavelength）例如是落在藍光的波長範圍或紫外光的波長範圍內，其中峰值波長被定義為光強度最大處所對應的波長，例如為445、455或460奈米(nm)。激發光源110包括雷射二極體（Laser Diode, LD）、發光二極體（Light Emitting Diode, LED）或者是上述兩者其中之一所構成的矩陣，本發明並不以此為限。在本實施例中，激發光源110為雷射發光元件。激發光源110提供激發光束EB。The excitation light source 110 referred to in the embodiment of the present invention is generally referred to as a light source capable of emitting a short-wavelength beam. The peak wavelength of the short-wavelength beam is, for example, falling within a wavelength range of blue light or a wavelength range of ultraviolet light. The peak wavelength is defined as the wavelength corresponding to the maximum light intensity, for example, 445, 455 or 460 nanometers (nm). The excitation light source 110 includes a laser diode (LD), a light emitting diode (LED), or a matrix of one of the above, and the invention is not limited thereto. In the present embodiment, the excitation light source 110 is a laser light emitting element. The excitation light source 110 provides an excitation beam EB.
在本發明的實施例中所指的波長轉換元件120用於將短波長光束轉換成相對於短波長光束的長波長光束的光學元件。在本實施例中，波長轉換元件120為螢光粉輪（Phosphor Wheel），但不以此為限制。請參照圖2A以及圖2B，詳細來說，波長轉換元件120具有波長轉換區域R1、反射區域R2、透光區域R3、轉軸128以及環形基板S。其中波長轉換區域R1以及反射區域R2以轉軸128為中心藉由環狀排列以形成環形區域R。此外，波長轉換元件120包括波長轉換物質122、反射部124以及透光部126。波長轉換物質122定義出波長轉換區域R1，且使傳遞至波長轉換區域R1的短波長光束轉換成長波長光束。波長轉換物質122是螢光粉，例如是可被激發出黃光的螢光粉稱為黃色螢光粉，但不以此為限制。當激發光束EB傳遞至波長轉換區域R1時，激發光束EB激發波長轉換物質122以發出轉換光束CB。轉換光束CB例如是黃光光束。反射部124定義出反射區域R2，且使傳遞至此反射區域R2的激發光束被反射，其中反射部124可為具有反射功能的塗布層，但不以此為限。透光部126定義出透光區域R3，且使傳遞至此透光區域R3的光束穿透。波長轉換區域R1與反射區域R2形成環形區域R。透光區域R3被環形區域R所圍繞。透光區域R3設置於環形區域R與轉軸128之間。環形區域R與透光區域R3例如是以共圓心CR的方式設置，但本發明並不以此為限制。環型區域R對應設置於環型基板S上，其中透光部126設置於環型基板S與轉軸128之間。透光部126對應位於透光區域R3。透光部126分別與轉軸128與環型基板S連接。在本實施例中，透光部126為透明基板，且透明基板的外徑(半徑) OR大於環型基板S的內徑IR。透明基板抵靠於環形基板S的卡槽T。在其他的實施例中，透明基板的外徑OR也可以是等於環型基板S的內徑IR，並且透明基板例如是透過膠體與環形基板S黏著，本發明並不以此為限制。環形基板S例如為金屬基板或具有高反射鍍膜的基板，環形基板S可用於反射轉換光束CB。The wavelength converting element 120 referred to in the embodiment of the present invention is used to convert a short-wavelength beam into an optical element of a long-wavelength beam with respect to a short-wavelength beam. In the present embodiment, the wavelength conversion element 120 is a Phosphor Wheel, but is not limited thereto. 2A and 2B, in detail, the wavelength conversion element 120 has a wavelength conversion region R1, a reflection region R2, a light transmission region R3, a rotation axis 128, and an annular substrate S. The wavelength conversion region R1 and the reflection region R2 are annularly arranged around the rotation axis 128 to form an annular region R. Further, the wavelength conversion element 120 includes a wavelength conversion substance 122, a reflection portion 124, and a light transmission portion 126. The wavelength converting substance 122 defines the wavelength conversion region R1, and converts the short-wavelength light beam transmitted to the wavelength conversion region R1 into a long-wavelength light beam. The wavelength converting substance 122 is a fluorescent powder, and for example, a fluorescent powder that can be excited to emit yellow light is called yellow fluorescent powder, but is not limited thereto. When the excitation beam EB is transmitted to the wavelength conversion region R1, the excitation beam EB excites the wavelength conversion substance 122 to emit the converted beam CB. The converted beam CB is, for example, a yellow light beam. The reflection portion 124 defines the reflection region R2, and the excitation light beam transmitted to the reflection region R2 is reflected, wherein the reflection portion 124 may be a coating layer having a reflection function, but is not limited thereto. The light transmitting portion 126 defines the light transmitting region R3 and penetrates the light beam transmitted to the light transmitting region R3. The wavelength conversion region R1 and the reflection region R2 form an annular region R. The light transmitting region R3 is surrounded by the annular region R. The light transmitting region R3 is disposed between the annular region R and the rotating shaft 128. The annular region R and the light transmitting region R3 are disposed, for example, in a manner of a common center CR, but the present invention is not limited thereto. The ring-shaped region R is disposed on the ring-shaped substrate S, wherein the light-transmitting portion 126 is disposed between the ring-shaped substrate S and the rotating shaft 128. The light transmitting portion 126 is correspondingly located in the light transmitting region R3. The light transmitting portion 126 is connected to the ring substrate S and the rotating shaft 128, respectively. In the present embodiment, the light transmitting portion 126 is a transparent substrate, and the outer diameter (radius) OR of the transparent substrate is larger than the inner diameter IR of the ring substrate S. The transparent substrate abuts against the card slot T of the annular substrate S. In other embodiments, the outer diameter OR of the transparent substrate may be equal to the inner diameter IR of the ring substrate S, and the transparent substrate is adhered to the annular substrate S, for example, through the colloid, and the invention is not limited thereto. The annular substrate S is, for example, a metal substrate or a substrate having a highly reflective plating film, and the annular substrate S can be used to reflect the converted light beam CB.
在本發明的實施例中所指的反射罩130係指具有反射功能的罩體，可為金屬材料或透明基材上塗布高反射材料(例如銀或其化合物等)所製成。在本實施例中，反射罩130具有拋物反射面RS(設置於反射罩130內表面)，且拋物反射面RS具有焦點F。反射罩130包括彼此相連的第一反射部132以及第二反射部134。第一反射部132例如是反射罩130的上半部。第二反射部134例如是反射罩130的下半部。第一反射部132相對於第二反射部134遠離波長轉換元件120。第二反射部134於波長轉換元件120上的正投影區域涵蓋波長轉換元件120的透光區域R3的至少一部分。The reflector 130 referred to in the embodiment of the present invention refers to a cover having a reflective function, which can be made of a metal material or a transparent substrate coated with a highly reflective material such as silver or a compound thereof. In the present embodiment, the reflection cover 130 has a parabolic reflection surface RS (provided on the inner surface of the reflection cover 130), and the parabolic reflection surface RS has a focal point F. The reflection cover 130 includes a first reflection portion 132 and a second reflection portion 134 that are connected to each other. The first reflecting portion 132 is, for example, an upper half of the reflecting cover 130. The second reflection portion 134 is, for example, the lower half of the reflection cover 130. The first reflecting portion 132 is away from the wavelength conversion element 120 with respect to the second reflecting portion 134. The orthographic projection area of the second reflecting portion 134 on the wavelength conversion element 120 covers at least a portion of the light transmissive region R3 of the wavelength conversion element 120.
在本實施例中，分合光鏡組140包括第一部分142以及第二部分144。請參照圖4A以及圖5A，更詳細來說，第一部分142包括第一基板S1、光學層OL1以及抗反射塗層AR1（Anti-reflection coating, AR Coating）。光學層OL1以及抗反射塗層AR1分別設置於第一基板S1的相對兩表面上。第二部分144包括第二基板S2、光學層OL2以及抗反射塗層AR2。光學層OL2以及抗反射塗層AR2分別設置於第二基板S2的相對兩表面上。請參照圖4B，光學層OL1對於藍光波長範圍的光束反射，而讓綠光波長範圍的光束與紅光波長範圍的光束穿透。在本實施例中，光學層OL1反射藍光，且可讓綠光與紅光穿透。請參照圖5B，光學層OL2對於藍光波長範圍的部分光束反射，而讓綠光波長範圍的光束與紅光波長範圍的光束穿透。在本實施例中，光學層OL2可讓部分的藍光反射，且可讓部分的藍光、綠光以及紅光穿透。第一基板S1與第二基板S2的材質皆為透光材質，且例如是玻璃或塑膠，但不以此為限制。In the present embodiment, the split lens group 140 includes a first portion 142 and a second portion 144. Referring to FIG. 4A and FIG. 5A , in more detail, the first portion 142 includes a first substrate S1 , an optical layer OL1 , and an anti-reflection coating (AR1). The optical layer OL1 and the anti-reflection coating AR1 are respectively disposed on opposite surfaces of the first substrate S1. The second portion 144 includes a second substrate S2, an optical layer OL2, and an anti-reflective coating AR2. The optical layer OL2 and the anti-reflection coating AR2 are respectively disposed on opposite surfaces of the second substrate S2. Referring to FIG. 4B, the optical layer OL1 reflects the light beam in the blue wavelength range, and the green light wavelength range and the red light wavelength range. In the present embodiment, the optical layer OL1 reflects blue light and allows green light and red light to pass through. Referring to FIG. 5B, the optical layer OL2 reflects a partial beam of the blue wavelength range, and allows the beam of the green wavelength range to penetrate the beam of the red wavelength range. In this embodiment, the optical layer OL2 allows a portion of the blue light to be reflected, and a portion of the blue, green, and red light can be transmitted. The materials of the first substrate S1 and the second substrate S2 are all light-transmitting materials, and are, for example, glass or plastic, but are not limited thereto.
在本發明的實施例中的光閥230係指數位微鏡元件（Digital Micro-mirror Device, DMD）、矽基液晶面板（Liquid-crystal-on-silicon Panel, LCOS Panel）或是液晶面板（Liquid Crystal Panel, LCD）等空間光調變器之任一者。於本實施例中，光閥230為數位微鏡元件。在本實施例中，光閥230的數量為一個。於其他的實施例中，光閥230的數量可以為多個，本發明並不以此為限制。The light valve 230 in the embodiment of the present invention is a Digital Micro-mirror Device (DMD), a Liquid-crystal-on-silicon Panel (LCOS Panel), or a liquid crystal panel (Liquid). Any of the spatial light modulators such as Crystal Panel, LCD). In the present embodiment, the light valve 230 is a digital micromirror element. In the present embodiment, the number of the light valves 230 is one. In other embodiments, the number of the light valves 230 may be plural, and the invention is not limited thereto.
在本發明實施例中所指的濾光元件210係泛指可以濾除特定波長範圍的光束且使除了此特定波長範圍的光束之外的光束通過的光學元件。請參照圖6，在本實施例中，濾光元件210例如是色輪（Color Wheel）。濾光元件210具有紅光濾光區域RR、綠光濾光區域GR以及透光區域TR，且包括紅光濾光片212、綠光濾光片214、透光元件(玻璃片)216以及轉軸218。紅光濾光區域RR內設置有紅光濾光片212，用於使紅光穿透且濾除除了紅光以外的光束。綠光濾光區域GR內設置有綠光濾光片214，用於使綠光穿透且濾除除了綠光以外的光束。舉例而言，紅光濾光片212，用於使具有紅光波段範圍的光束穿透且濾除(或反射)其他波段範圍的光束，以此類推。透光區域TR內設置有透光元件216。在其他實施例中，透光區域TR內還設置擴散片、擴散粒子或擴散結構，用於減少或消除激發光束的光斑（Speckle）現象。紅光濾光區域RR例如是占整個濾光元件210的5/12，綠光濾光區域GR例如是占整個濾光元件210的5/12，且透光區域TR例如是占了整個濾光元件210的1/6，但不以此為限制，本領域的技術人員可以依照設計上的需求而進行調整。The filter element 210 referred to in the embodiment of the present invention generally refers to an optical element that can filter out a light beam of a specific wavelength range and pass a light beam other than the light beam of the specific wavelength range. Referring to FIG. 6, in the present embodiment, the filter element 210 is, for example, a color wheel. The filter element 210 has a red filter region RR, a green filter region GR, and a light-transmitting region TR, and includes a red filter 212, a green filter 214, a light-transmitting member (glass plate) 216, and a rotating shaft. 218. A red light filter 212 is disposed in the red light filtering region RR for penetrating the red light and filtering out the light beam other than the red light. A green light filter 214 is disposed in the green light filter region GR for penetrating the green light and filtering out the light beam other than the green light. For example, a red light filter 212 is used to penetrate a beam having a red wavelength range and filter (or reflect) light beams in other wavelength ranges, and so on. A light transmitting member 216 is disposed in the light transmitting region TR. In other embodiments, a diffusion sheet, a diffusion particle, or a diffusion structure is disposed in the light-transmitting region TR for reducing or eliminating the speckle phenomenon of the excitation beam. The red light filtering region RR is, for example, 5/12 of the entire filter element 210, and the green light filtering region GR is, for example, 5/12 of the entire filter element 210, and the light transmitting region TR, for example, occupies the entire filter. 1/6 of the component 210, but not limited thereto, can be adjusted by those skilled in the art according to design requirements.
在本發明實施例中的勻光元件220係指可讓通過此勻光元件220的光束均勻化的光學元件。在本實施例中，勻光元件220例如是積分柱（Integration Rod）、透鏡陣列或其他具有光均勻化效果的光學元件，但不以此為限制。The light homogenizing element 220 in the embodiment of the present invention refers to an optical element that can homogenize the light beam passing through the light homogenizing element 220. In the present embodiment, the light homogenizing element 220 is, for example, an integration rod, a lens array, or other optical element having a light homogenizing effect, but is not limited thereto.
在本發明實施例中的投影鏡頭240例如是包括具有屈光度的一或多個光學鏡片的組合，光學鏡片例如包括雙凹透鏡、雙凸透鏡、凹凸透鏡、凸凹透鏡、平凸透鏡以及平凹透鏡等非平面鏡片的各種組合。本發明對投影鏡頭240的型態及其種類並不加以限制。此外，在本實施例中，投影裝置200內部可以選擇性地設置會聚透鏡C與導光組LA，以調整投影裝置200內的光束路徑。The projection lens 240 in the embodiment of the present invention is, for example, a combination including one or more optical lenses having a refracting power, for example, a non-planar lens including a biconcave lens, a lenticular lens, a meniscus lens, a convexoconcave lens, a plano-convex lens, and a plano-concave lens. Various combinations. The present invention does not limit the type and type of projection lens 240. In addition, in the present embodiment, the condenser lens C and the light guiding group LA may be selectively disposed inside the projection device 200 to adjust the beam path in the projection device 200.
於以下的段落中會詳細地說明上述元件之間的配置關係。請再參照圖1A以及圖1B，分合光鏡組140的第一部分142配置於激發光束EB的傳遞路徑上。反射罩130配置於來自第一部分142的激發光束EB的傳遞路徑上。波長轉換元件120配置於來自反射罩130的激發光束EB的傳遞路徑上。分合光鏡組140的第二部分144配置於來自波長轉換元件120的激發光束EB或轉換光束CB的傳遞路徑上。會聚透鏡C配置於來自分合光鏡組140的激發光束EB與轉換光束CB的傳遞路徑上，且位於分合光鏡組144與濾光元件210之間。勻光元件220配置於來自濾光元件210的照明光束IB的傳遞路徑上，且位於濾光元件210與至少一光閥230之間。導光組LA配置於來自勻光元件220的照明光束IB的傳遞路徑上。光閥230配置於來自濾光元件210的照明光束IB的傳遞路徑上。投影鏡頭240配置於影像光束IMB的傳遞路徑上。The arrangement relationship between the above elements will be explained in detail in the following paragraphs. Referring again to FIGS. 1A and 1B, the first portion 142 of the split lens group 140 is disposed on the transmission path of the excitation light beam EB. The reflection cover 130 is disposed on a transmission path of the excitation light beam EB from the first portion 142. The wavelength conversion element 120 is disposed on a transmission path of the excitation light beam EB from the reflection cover 130. The second portion 144 of the split lens group 140 is disposed on the transmission path of the excitation beam EB or the converted beam CB from the wavelength conversion element 120. The condenser lens C is disposed on the transmission path of the excitation beam EB and the conversion beam CB from the split lens group 140, and is located between the split lens group 144 and the filter element 210. The light homogenizing element 220 is disposed on the transmission path of the illumination light beam IB from the filter element 210 and between the filter element 210 and the at least one light valve 230. The light guiding group LA is disposed on the transmission path of the illumination light beam IB from the light homogenizing element 220. The light valve 230 is disposed on a transmission path of the illumination light beam IB from the filter element 210. The projection lens 240 is disposed on the transmission path of the image beam IMB.
波長轉換元件120的驅動元件(例如馬達(motor))帶動轉軸128以使波長轉換區域R1以及反射區域R2以旋轉的方式依序進入包括拋物反射面RS的焦點F的一照射區域P。在本實施例中，投影裝置200藉由使波長轉換元件120與濾光元件210同步轉動的方式，以使濾光元件210的紅光濾光區域RR與綠光濾光區域GR對應於波長轉換元件120的波長轉換區域R1，且使濾光元件210的透光區域TR對應於波長轉換元件120的反射區域R2。也就是說，來自波長轉換區域R1的光束會通過紅光濾光區域RR或綠光濾光區域GR，且來自反射區域R2的光束會通過透光區域TR。於以下的段落中會詳細地說明在投影裝置200中的光學行為。The driving element (for example, a motor) of the wavelength conversion element 120 drives the rotating shaft 128 to sequentially rotate the wavelength conversion region R1 and the reflection region R2 into an irradiation region P including the focal point F of the parabolic reflecting surface RS. In this embodiment, the projection device 200 rotates the wavelength conversion element 120 and the filter element 210 in synchronization, so that the red filter region RR and the green filter region GR of the filter element 210 correspond to wavelength conversion. The wavelength conversion region R1 of the element 120 and the light transmission region TR of the filter element 210 correspond to the reflection region R2 of the wavelength conversion element 120. That is, the light beam from the wavelength conversion region R1 passes through the red light filter region RR or the green light filter region GR, and the light beam from the reflection region R2 passes through the light transmission region TR. The optical behavior in the projection device 200 will be explained in detail in the following paragraphs.
請參照圖1A，激發光束EB傳遞至環形區域R中的波長轉換區域R1的時間區間為第一時間區間。在第一時間區間內，激發光束EB由激發光源110發出，並依序被分合光鏡組140的第一部分142以及反射罩130的第一反射部132導引至環形區域R的波長轉換區域R1。詳細來說，激發光束EB被第一部分142反射至第一反射部132。激發光束EB再被第一反射部132反射而傳遞至包括拋物反射面RS的焦點F的照射區域P。在本實施例中，此照射區域P例如是激發光束EB照射到波長轉換區域R1上的光斑的區域範圍，此光斑面積的長軸長度小於波長轉換區域R1的寬度。波長轉換區域R1被激發光束EB激發後而發出轉換光束CB。轉換光束CB傳遞至反射罩130的第一反射部132與第二反射部134，而被第一反射部132與第二反射部134反射。由於第一反射部132與第二反射部134的表面為拋物反射面RS，因此被第一反射部132與第二反射部134反射後的轉換光束CB會以平行地方式出射於反射罩130。此外，值得一提的是，一參考平面RP設置於分合光鏡組140的第一部分142與反射罩130的第一反射部132之間的激發光束EB的傳遞路徑上，其中在參考平面RP上激發光束EB的光斑面積小於或等於反射罩130的拋物反射面RS在參考平面RP上正投影(projection)面積的二分之一(1/2)。Referring to FIG. 1A, the time interval in which the excitation beam EB is transmitted to the wavelength conversion region R1 in the annular region R is the first time interval. In the first time interval, the excitation light beam EB is emitted by the excitation light source 110, and is sequentially guided by the first portion 142 of the split lens group 140 and the first reflection portion 132 of the reflection cover 130 to the wavelength conversion region of the annular region R. R1. In detail, the excitation light beam EB is reflected by the first portion 142 to the first reflection portion 132. The excitation light beam EB is again reflected by the first reflection portion 132 and transmitted to the irradiation region P of the focal point F including the parabolic reflection surface RS. In the present embodiment, the irradiation region P is, for example, a range of a region in which the excitation light beam EB is irradiated onto the wavelength conversion region R1, and the long axis length of the spot area is smaller than the width of the wavelength conversion region R1. The wavelength conversion region R1 is excited by the excitation beam EB to emit the converted beam CB. The converted light beam CB is transmitted to the first reflective portion 132 and the second reflective portion 134 of the reflective cover 130 and is reflected by the first reflective portion 132 and the second reflective portion 134. Since the surfaces of the first reflecting portion 132 and the second reflecting portion 134 are the parabolic reflecting surface RS, the converted light beam CB reflected by the first reflecting portion 132 and the second reflecting portion 134 is emitted in parallel to the reflecting cover 130. In addition, it is worth mentioning that a reference plane RP is disposed on the transmission path of the excitation beam EB between the first portion 142 of the split optical lens group 140 and the first reflection portion 132 of the reflective cover 130, wherein the reference plane RP The spot area of the upper excitation beam EB is less than or equal to one-half (1/2) of the projected area of the projection surface RP of the reflector 130 on the reference plane RP.
請再參照圖1A，接著，反射後的轉換光束CB被分合光鏡組140的第一部分142與第二部分144導引以沿方向D傳遞，以將轉換光束CB輸出於照明系統100。具體而言，轉換光束CB包括第一轉換子光束CB1以及第二轉換子光束CB2。第一轉換子光束CB1被第一反射部132反射並穿透分合光鏡組140的第一部分142而沿方向D傳遞。另一方面，第二轉換子光束CB2被第二反射部134反射並穿透波長轉換元件120的透光區域R3的至少一部分，並穿透分合光鏡組140的第二部分144而沿方向D傳遞。轉換光束CB(第一轉換子光束CB1以及第二轉換子光束CB2)藉由會聚透鏡C會聚於濾光元件140的紅光濾光區域RR或綠光濾光區域GR。具體而言，當轉換光束CB傳遞至紅光濾光區域RR/綠光濾光區域GR時，紅光濾光區域RR/綠光濾光區域GR可使轉換光束CB中的紅光/綠光通過，並濾除其他色光。也就是說，濾光元件210可以提升色光的色純度。Referring again to FIG. 1A, the reflected converted beam CB is then guided by the first portion 142 and the second portion 144 of the split lens group 140 to be transmitted in the direction D to output the converted beam CB to the illumination system 100. Specifically, the converted beam CB includes a first converted sub-beam CB1 and a second converted sub-beam CB2. The first converted sub-beam CB1 is reflected by the first reflecting portion 132 and penetrates the first portion 142 of the splitting light microscope group 140 to be transmitted in the direction D. On the other hand, the second conversion sub-beam CB2 is reflected by the second reflection portion 134 and penetrates at least a portion of the light-transmitting region R3 of the wavelength conversion element 120, and penetrates the second portion 144 of the split light lens group 140 in the direction D pass. The converted light beam CB (the first converted sub-beam CB1 and the second converted sub-beam CB2) is concentrated by the converging lens C in the red filter region RR or the green filter region GR of the filter element 140. Specifically, when the converted light beam CB is transmitted to the red light filter region RR/green light filter region GR, the red light filter region RR/green light filter region GR can cause red light/green light in the converted light beam CB. Pass and filter out other shades of light. That is to say, the filter element 210 can enhance the color purity of the colored light.
請參照圖1B，激發光束EB傳遞至環形區域R中的反射區域R2的時間區間為第二時間區間。在第二時間區間內，激發光束EB由激發光源110發出，並被分合光鏡組140的第一部分142反射至反射罩130的第一反射部132。激發光束EB被第一反射部132反射而傳遞至包括拋物反射面RS的焦點F的照射區域P。激發光束EB再被反射區域R2反射後而傳遞至反射罩130的第二反射部134，藉由第二反射部134的反射，穿透透光區域R3的至少一部分。同樣地，激發光束EB也會以平行地方式出射於反射罩130。Referring to FIG. 1B, the time interval in which the excitation beam EB is transmitted to the reflection region R2 in the annular region R is the second time interval. In the second time interval, the excitation beam EB is emitted by the excitation light source 110 and is reflected by the first portion 142 of the split lens group 140 to the first reflection portion 132 of the reflection cover 130. The excitation light beam EB is reflected by the first reflection portion 132 and transmitted to the irradiation region P of the focus F including the parabolic reflection surface RS. The excitation beam EB is reflected by the reflection region R2 and transmitted to the second reflection portion 134 of the reflection cover 130, and penetrates at least a portion of the light transmission region R3 by the reflection of the second reflection portion 134. Similarly, the excitation beam EB is also emitted to the reflection mask 130 in a parallel manner.
請再參照圖1B，接著，反射後的激發光束EB被分合光鏡組140的第二部分144導引以沿方向D傳遞，以將激發光束EB輸出於照明系統100。具體而言，激發光束EB包括第一激發光束EB1以及第二激發光束EB2。當激發光束EB傳遞至第二部分144時，由於第二部分144的光學層144b能使一半的藍光反射且讓一半的藍光穿透，因此，第一激發光束EB1被第二部分144所反射而傳遞至第一部分142，第一激發光束EB1再被第一部分142所反射而沿方向D傳遞。另一方面，第二激發光束EB2穿透第二部分144而沿方向D傳遞。第一激發光束EB1與第二激發光束EB2藉由會聚透鏡C會聚於濾光元件140的透光區域TR。進一步說明，藉由第二部分144的分光作用(部分穿透部分反射)，激發光束EB可平均地傳遞至會聚透鏡C，不會造成激發光束EB分布不均勻的狀態傳遞至會聚透鏡C。Referring again to FIG. 1B, the reflected excitation beam EB is then directed by the second portion 144 of the split lens group 140 for transmission in the direction D to output the excitation beam EB to the illumination system 100. Specifically, the excitation beam EB includes a first excitation beam EB1 and a second excitation beam EB2. When the excitation beam EB is transmitted to the second portion 144, since the optical layer 144b of the second portion 144 can reflect half of the blue light and allow half of the blue light to pass through, the first excitation beam EB1 is reflected by the second portion 144. Passed to the first portion 142, the first excitation beam EB1 is again reflected by the first portion 142 and passed in the direction D. On the other hand, the second excitation beam EB2 penetrates the second portion 144 and is transmitted in the direction D. The first excitation beam EB1 and the second excitation beam EB2 are concentrated by the converging lens C in the light-transmitting region TR of the filter element 140. Further, by the splitting action (partially penetrating partial reflection) of the second portion 144, the excitation light beam EB can be equally transmitted to the condenser lens C, and the state in which the excitation light beam EB is not unevenly distributed is transmitted to the condenser lens C.
接著，同時參考圖1A與圖1B，藉由濾光元件140的紅光濾光區域RR與綠光濾光區域GR，讓轉換光束CB中的紅光/綠光通過。藉由濾光元件140的透光區域TR，讓激發光束EB通過，其中激發光束EB例如為藍光。依據時序通過濾光元件140的紅光、綠光與藍光以形成照明光束IB。照明光束IB傳遞至勻光元件220，並藉由勻光元件220將照明光束IB均勻化。照明光束IB再藉由導光組LA導引至光閥230，其中導光組LA可為全反射稜鏡(TIR prism)。光閥230再將照明光束IB轉換成影像光束IMB。投影鏡頭240再將影像光束IMB傳遞至一投影媒介（例如是投影屏幕，未示出）上以形成影像畫面。Next, referring to FIG. 1A and FIG. 1B simultaneously, the red/green light in the converted light beam CB is passed through the red light filtering region RR and the green light filtering region GR of the filter element 140. The excitation light beam EB is passed through the light-transmitting region TR of the filter element 140, wherein the excitation light beam EB is, for example, blue light. The illumination light beam IB is formed by passing the red, green, and blue light of the filter element 140 in accordance with the timing. The illumination beam IB is transmitted to the light homogenizing element 220, and the illumination beam IB is homogenized by the light homogenizing element 220. The illumination beam IB is then guided to the light valve 230 by the light guide group LA, wherein the light guide group LA can be a TIR prism. The light valve 230 then converts the illumination beam IB into an image beam IMB. Projection lens 240 then transmits image beam IMB to a projection medium (e.g., a projection screen, not shown) to form an image frame.
承上述，在本實施例中的照明系統100與投影裝置200中，由於反射罩130在波長轉換元件120上的正投影(projection)區域涵蓋此透光區域R3的至少一部分，因此被反射罩130反射的轉換光束CB或者是激發光束EB可以透過此透光區域R3出射而被分合光鏡組140導引而沿同一方向D傳遞。因此，相較於相關技術，本實施例的照明系統100與投影裝置200可以以較少的光學元件以及較小的體積以達到將激發光束EB與轉換光束CB導引至同一方向D的效果。As described above, in the illumination system 100 and the projection apparatus 200 in this embodiment, since the projection area of the reflection cover 130 on the wavelength conversion element 120 covers at least a part of the light transmission area R3, the reflection cover 130 is The reflected converted light beam CB or the excitation light beam EB can be emitted through the light transmitting region R3 and guided by the splitting lens group 140 to be transmitted in the same direction D. Therefore, compared to the related art, the illumination system 100 and the projection apparatus 200 of the present embodiment can achieve the effect of guiding the excitation beam EB and the conversion beam CB to the same direction D with fewer optical elements and a smaller volume.
另一方面，在本實施例的照明系統100與投影裝置200中，激發光束EB或轉換光束CB係藉由反射罩130的反射面RS而反射至分合光鏡組140。本發明實施例的照明系統100與投影裝置200較不容易有光束溢散，而具有良好的光學效率。On the other hand, in the illumination system 100 and the projection apparatus 200 of the present embodiment, the excitation light beam EB or the converted light beam CB is reflected to the split light lens group 140 by the reflection surface RS of the reflection cover 130. The illumination system 100 and the projection apparatus 200 of the embodiment of the present invention are less likely to have beam overflow and have good optical efficiency.
在此必須說明的是，下述實施例沿用前述實施例的部分內容，省略了相同技術內容的說明，關於相同的元件名稱可以參考前述實施例的部分內容，下述實施例不再重複贅述。It is to be noted that the following embodiments use the parts of the foregoing embodiments, and the description of the same technical content is omitted. The same component names may be referred to the parts of the foregoing embodiments, and the following embodiments will not be repeated.
圖7A是本發明的另一實施例的照明系統100a在第一時間區間內的光路示意圖。圖7B是圖7A的照明系統100a在第二時間區間內的光路示意圖。圖8A是圖7A與圖7B中分合光鏡組的第一部分與第二部分的放大示意圖。圖8B是第一部分與第二部分共用的光學層的光譜圖。圖8C是第二部分的光學層的光譜圖。圖9A是第三部分的放大示意圖。圖9B是圖9A的光學層的光譜圖。Figure 7A is a schematic illustration of the optical path of the illumination system 100a in a first time interval in accordance with another embodiment of the present invention. Figure 7B is a schematic illustration of the optical path of the illumination system 100a of Figure 7A over a second time interval. Figure 8A is an enlarged schematic view showing a first portion and a second portion of the split lens assembly of Figures 7A and 7B. Figure 8B is a spectrogram of the optical layer shared by the first portion and the second portion. Figure 8C is a spectrogram of the optical layer of the second portion. Fig. 9A is an enlarged schematic view of the third portion. Figure 9B is a spectrogram of the optical layer of Figure 9A.
請同時參照圖7A以及圖7B的照明系統100a以及圖8A、圖8B、圖8C、圖9A以及圖9B，照明系統100a大致上類似於圖1A與圖1B中的照明系統100，其在架構上的主要差異在於：分合光鏡組140a除了第一部分142a與第二部分144a外，還包括第三部分146a。第三部分146a配置於激發光束EB的傳遞路徑上。請參照圖8A、圖8B與圖8C，在本實施例中，分合光鏡組140a的第一部分142a與分合光鏡組140a的第二部分144a例如設置於同一基板S3。第一部分142a與第二部分144a共用同一光學層OL3，且設置於基板S3的表面上。光學層OL4與抗反射鍍膜AR3設置於基板S3的另一表面上。抗反射鍍膜AR3與光學層OL4分別定義出第一部分142a與第二部分144b在基板S3上的區域。請參照圖8B，在本實施例中，光學層OL3讓藍光波長範圍的光束穿透，且對於綠光波長範圍的光束與紅光波長範圍的光束反射。光學層OL3可讓藍光穿透，且反射綠光與紅光（即可反射包含黃光波長範圍的光束）。請參照圖8C，在本實施例中，光學層OL4對於藍光波長範圍的光束部分反射部分穿透，且對於綠光波長範圍的光束與紅光波長範圍的光束反射。光學層OL4可反射部分的藍光，且可讓部分的藍光、綠光以及紅光穿透（即可讓包含黃光波長範圍的光束穿透）。Referring to both the illumination system 100a of FIGS. 7A and 7B and FIGS. 8A, 8B, 8C, 9A, and 9B, the illumination system 100a is substantially similar to the illumination system 100 of FIGS. 1A and 1B, which is architecturally The main difference is that the split lens group 140a includes a third portion 146a in addition to the first portion 142a and the second portion 144a. The third portion 146a is disposed on the transmission path of the excitation light beam EB. Referring to FIGS. 8A, 8B and 8C, in the present embodiment, the first portion 142a of the split lens group 140a and the second portion 144a of the split lens group 140a are disposed, for example, on the same substrate S3. The first portion 142a and the second portion 144a share the same optical layer OL3 and are disposed on the surface of the substrate S3. The optical layer OL4 and the anti-reflection coating AR3 are disposed on the other surface of the substrate S3. The anti-reflection coating AR3 and the optical layer OL4 define regions of the first portion 142a and the second portion 144b on the substrate S3, respectively. Referring to FIG. 8B, in the present embodiment, the optical layer OL3 transmits a light beam of a blue wavelength range and is reflected by a light beam of a green wavelength range and a light beam of a red wavelength range. The optical layer OL3 allows blue light to pass through and reflects green and red light (that is, a light beam containing a wavelength range of yellow light). Referring to FIG. 8C, in the present embodiment, the optical layer OL4 partially penetrates the beam portion of the blue wavelength range and is reflected for the beam of the green wavelength range and the beam of the red wavelength range. The optical layer OL4 can reflect a portion of the blue light and allows a portion of the blue, green, and red light to pass through (ie, the light beam containing the yellow wavelength range can be penetrated).
請參照圖9A與圖9B，分合光鏡組140a的第三部分146a包括基板S4以及光學層OL5，光學層OL5設置於基板S4的表面上。光學層OL5對於藍光波長範圍的光束反射。光學層OL5可反射藍光，且讓紅光波長範圍的光束與綠光波長範圍的光束穿透。在其他實施例中，光學層OL5可為高反射率的反射層，例如銀或鋁基材上鍍上二氧化矽或氟化鎂。接著，於下方的段落介紹照明系統100a的光學行為。Referring to FIGS. 9A and 9B, the third portion 146a of the split lens group 140a includes a substrate S4 and an optical layer OL5, and the optical layer OL5 is disposed on the surface of the substrate S4. The optical layer OL5 reflects light beams in the blue wavelength range. The optical layer OL5 reflects blue light and transmits a light beam of a red wavelength range and a light beam of a green wavelength range. In other embodiments, the optical layer OL5 can be a highly reflective reflective layer, such as a silver or aluminum substrate plated with cerium oxide or magnesium fluoride. Next, the optical behavior of the illumination system 100a is described in the following paragraphs.
請參照圖7A，在第一時間區間內，激發光束EB先穿透第一部分142a後，且被反射罩130的第一反射部132反射而傳遞至環形區域R的波長轉換區域R1而使波長轉換區域R1被激發出轉換光束CB。轉換光束CB中的第一子轉換光束CB1被第一反射部132反射而平行出射於反射罩130。第一子轉換光束CB1再被第一部分142a反射以沿方向D傳遞。另一方面，轉換光束CB中的第二子轉換光束CB2被第二反射部134反射且穿透透光區域R3的至少一部分。第二子轉換光束CB2再被第二部分144a反射以沿方向D傳遞而被會聚透鏡C會聚於濾光元件210。轉換光束CB後續的光學行為類似於圖1A的光學行為，於此不再贅述。Referring to FIG. 7A, in the first time interval, the excitation beam EB first penetrates the first portion 142a, is reflected by the first reflection portion 132 of the reflector 130, and is transmitted to the wavelength conversion region R1 of the annular region R to convert the wavelength. The region R1 is excited out of the converted beam CB. The first sub-converted light beam CB1 in the converted light beam CB is reflected by the first reflection portion 132 and is emitted in parallel to the reflection cover 130. The first sub-converted beam CB1 is again reflected by the first portion 142a to pass in the direction D. On the other hand, the second sub-converted light beam CB2 in the converted light beam CB is reflected by the second reflecting portion 134 and penetrates at least a portion of the light transmitting region R3. The second sub-converted beam CB2 is again reflected by the second portion 144a to be transmitted in the direction D to be concentrated by the converging lens C to the filter element 210. The subsequent optical behavior of the converted beam CB is similar to the optical behavior of FIG. 1A and will not be described again.
請參照圖7B，在第二時間區間內，激發光束EB穿透第一部分142a後，被反射罩130的第一反射部132反射而傳遞至環形區域R的反射區域R2。激發光束EB被反射區域R2反射後，再被反射罩130的第二反射部134反射並穿透透光區域T3的至少一部分。激發光束EB再被第二部分144b導引以沿方向D傳遞。具體而言，激發光束EB中的第一激發子光束EB1被第二部分144a反射而沿方向D傳遞。激發光束EB中的第二激發子光束EB2穿透第二部分144a後再被第三部分146a反射而傳遞至第一部分142a。第二激發子光束EB2再穿透第一部分142a以沿方向D傳遞而被會聚透鏡C會聚於濾光元件210。激發光束EB後續的光學行為類似於圖1B中的光學行為，於此不再贅述。Referring to FIG. 7B, in the second time interval, after the excitation beam EB penetrates the first portion 142a, it is reflected by the first reflection portion 132 of the reflection cover 130 and transmitted to the reflection region R2 of the annular region R. After the excitation beam EB is reflected by the reflection region R2, it is reflected by the second reflection portion 134 of the reflection cover 130 and penetrates at least a portion of the light transmission region T3. The excitation beam EB is then guided by the second portion 144b to pass in the direction D. Specifically, the first excitation sub-beam EB1 in the excitation beam EB is reflected by the second portion 144a and transmitted in the direction D. The second excitation sub-beam EB2 in the excitation beam EB penetrates the second portion 144a and is then reflected by the third portion 146a to be transmitted to the first portion 142a. The second excitation sub-beam EB2 then penetrates the first portion 142a to pass in the direction D and is concentrated by the converging lens C to the filter element 210. The subsequent optical behavior of the excitation beam EB is similar to the optical behavior in FIG. 1B and will not be described again.
圖10、圖11A以及圖12為本發明不同實施例的第一部分與第二部分的放大示意圖。圖11B是圖11A中的第二部分的光學層的光譜圖。圖13A是本發明另一實施例的第三部分的放大示意圖。圖13B是圖13A中的第三部分的反射膜的光譜圖。10, 11A and 12 are enlarged schematic views of a first portion and a second portion of different embodiments of the present invention. Figure 11B is a spectrogram of the optical layer of the second portion of Figure 11A. Figure 13A is an enlarged schematic view of a third portion of another embodiment of the present invention. Fig. 13B is a spectrogram of the reflective film of the third portion in Fig. 13A.
請參照圖10，分合光鏡組140b的第一部分142b與第二部分144b大致類似於圖8A的第一部分142a與第二部分144a，其主要差異在於：第一部分142b與第二部分144b彼此分離。應注意的是，上述的第一部分142b與第二部分144b可替換如圖7A與圖7B中的第一部分142a與第二部分144a，而達到同樣的光學效果。Referring to FIG. 10, the first portion 142b and the second portion 144b of the split lens group 140b are substantially similar to the first portion 142a and the second portion 144a of FIG. 8A, with the main difference being that the first portion 142b and the second portion 144b are separated from each other. . It should be noted that the first portion 142b and the second portion 144b described above may replace the first portion 142a and the second portion 144a in FIGS. 7A and 7B to achieve the same optical effect.
請參照圖11A與圖11B，分合光鏡組140c的第一部分142c與第二部分144c大致類似於圖8A的第一部分142a與第二部分144a，其主要差異在於：第一部分142c與第二部分144c共用抗反射鍍膜AR3。光學層OL3與光學層OL6分別定義出第一部分142c與第二部分144c。請參照圖11B，光學層OL6對於藍光波長範圍的光束部分穿透部分反射，且對紅光波長範圍的光束與綠光波長範圍的光束反射。光學層OL6可反射部分的藍光、綠光以及紅光（即可反射包含黃光波長範圍的光束），且可讓部分的藍光穿透。應注意的是，上述的第一部分142c與第二部分144c可替換如圖7A與圖7B中的第一部分142a與第二部分144a，而達到同樣的光學效果。Referring to FIGS. 11A and 11B, the first portion 142c and the second portion 144c of the split lens group 140c are substantially similar to the first portion 142a and the second portion 144a of FIG. 8A, with the main difference being: the first portion 142c and the second portion 144c shares the anti-reflection coating AR3. The optical layer OL3 and the optical layer OL6 define a first portion 142c and a second portion 144c, respectively. Referring to FIG. 11B, the optical layer OL6 partially reflects the beam portion of the blue wavelength range and reflects the beam of the red wavelength range and the green wavelength range. The optical layer OL6 can reflect a portion of the blue, green, and red light (i.e., reflect the light beam containing the yellow wavelength range) and allow a portion of the blue light to pass through. It should be noted that the first portion 142c and the second portion 144c described above may replace the first portion 142a and the second portion 144a in FIGS. 7A and 7B to achieve the same optical effect.
請參照圖12，第一部分142d與第二部分144d大致類似於圖11A的第一部分142c與第二部分144c，其主要差異在於：第一部分142d與第二部分144d彼此分離。應注意的是，上述的第一部分142d與第二部分144d可替換如圖7A與圖7B中的第一部分142a與第二部分144a，而達到同樣的光學效果。Referring to FIG. 12, the first portion 142d and the second portion 144d are substantially similar to the first portion 142c and the second portion 144c of FIG. 11A, with the main difference being that the first portion 142d and the second portion 144d are separated from each other. It should be noted that the first portion 142d and the second portion 144d described above may replace the first portion 142a and the second portion 144a in FIGS. 7A and 7B to achieve the same optical effect.
請參照圖13A與圖13B，第三部分146e大致類似於圖9A與圖9B中的第三部分146，其主要差異在於：反射層RL設置於第三基板S3的表面上。反射層RL反射藍光，例如銀或鋁基材上鍍上二氧化矽或氟化鎂。應注意的是，上述的第三部分146e可替換如圖7A與圖7B中的第三部分146，而達到同樣的光學效果。Referring to FIGS. 13A and 13B, the third portion 146e is substantially similar to the third portion 146 of FIGS. 9A and 9B, the main difference being that the reflective layer RL is disposed on the surface of the third substrate S3. The reflective layer RL reflects blue light, for example, a silver or aluminum substrate is plated with cerium oxide or magnesium fluoride. It should be noted that the third portion 146e described above can replace the third portion 146 of FIGS. 7A and 7B to achieve the same optical effect.
圖14為本發明另一實施例的波長轉換元件。圖15為圖14的波長轉換元件的剖面示意圖。Figure 14 is a diagram showing a wavelength conversion element according to another embodiment of the present invention. Figure 15 is a cross-sectional view of the wavelength conversion element of Figure 14.
請參照圖14與圖15，在本實施例中，波長轉換元件120f還包括多個支撐部121。每一支撐部121分別具有兩端E1與E2，每一支撐部121的一端E2與轉軸128連接。每一支撐部121的另一端E1與環形基板S連接。本實施例中三支撐部121可區分透光區域R3成三個區域，且三區域呈扇形且具有相等的面積(兩支撐部121之間的夾角為120度)。因此，透過這些支撐部121的設置，本實施例的波長轉換元件120f的結構強度相較於波長轉換元件120更為堅固。Referring to FIG. 14 and FIG. 15, in the embodiment, the wavelength conversion element 120f further includes a plurality of support portions 121. Each support portion 121 has two ends E1 and E2, and one end E2 of each support portion 121 is connected to the rotating shaft 128. The other end E1 of each support portion 121 is connected to the ring substrate S. In the embodiment, the three supporting portions 121 can distinguish the light-transmitting regions R3 into three regions, and the three regions are fan-shaped and have an equal area (the angle between the two supporting portions 121 is 120 degrees). Therefore, the structural strength of the wavelength conversion element 120f of the present embodiment is stronger than that of the wavelength conversion element 120 by the arrangement of the support portions 121.
此外，圖16為本發明又一實施例的波長轉換元件。請參照圖6以及圖16，在本實施例中，這些支撐部121對應於濾光元件210的紅光濾光區域RR、綠光濾光區域GR與透光區域TR兩兩區域之間的間隔設置。當轉換光束CB或者是激發光束EB由透光區域R3穿透時，部分的轉換光束CB或者是部分的激發光束EB會被這些支撐部121所阻擋，而不會傳遞至濾光元件210中的三區域兩兩之間的間隔。這樣的配置方式避免了當轉換光束CB傳遞至三區域兩兩之間的間隔時，會對應產生雜散色光的問題。同時，也可以透過濾光元件210中輪輻區的特性降低激發光束EB或轉換光束CB的損耗。根據濾光元件210的紅光濾光區域RR、綠光濾光區域GR與透光區域TR兩兩區域之間具有間隔，在此間隔處通過這些濾光區域的光束會產生非預期的顏色(非純色)，光閥230大都會在此間隔處所對應的時間區間中處於關閉的狀態，因此藉由上述這些支撐部121的位置設計也不會影響到投射的影像畫面的畫質或顏色。應注意的是，上述的波長轉換元件120f可替換如同照明系統100與照明系統100a中的波長轉換元件120。Further, Fig. 16 is a wavelength conversion element according to still another embodiment of the present invention. Referring to FIG. 6 and FIG. 16 , in the embodiment, the supporting portions 121 correspond to the interval between the red light filtering region RR, the green light filtering region GR and the light transmitting region TR of the filter element 210 . Settings. When the converted light beam CB or the excitation light beam EB is penetrated by the light transmitting region R3, part of the converted light beam CB or a part of the excitation light beam EB is blocked by the support portions 121 and is not transmitted to the filter element 210. The interval between the two regions. Such a configuration avoids the problem of generating stray light when the converted beam CB is transmitted to the interval between the two regions. At the same time, the loss of the excitation beam EB or the conversion beam CB can also be reduced by the characteristics of the spoke regions in the filter element 210. According to the interval between the red light filtering region RR, the green light filtering region GR and the light transmitting region TR of the filter element 210, the light beams passing through the filter regions at this interval may generate an unexpected color ( The non-solid color), the light valve 230 is mostly in a closed state in the time interval corresponding to the interval, and therefore the position design of the support portions 121 does not affect the image quality or color of the projected image frame. It should be noted that the wavelength conversion element 120f described above can be substituted for the wavelength conversion element 120 as in the illumination system 100 and the illumination system 100a.
綜上所述，在本發明實施例中的照明系統與投影裝置200中，由於反射罩涵蓋此透光區域的至少一部分，因此被反射罩反射的轉換光束或者是激發光束可以透過此透光區域出射而被分合光鏡組導引而沿同一方向傳遞。因此，相較於相關技術，本發明實施例的照明系統與投影裝置可以以較少的光學元件以及較小的體積以達到將激發光束與轉換光束導引至同一方向的效果。此外，反射罩的反射面並非由分合光元件的表面構成，因此，本發明實施例的照明系統與投影裝置較不容易有光束溢散，而具有良好的光學效率。In summary, in the illumination system and the projection device 200 in the embodiment of the present invention, since the reflector covers at least a portion of the light-transmitting region, the converted beam or the excitation beam reflected by the reflector can pass through the light-transmitting region. It is emitted and guided by the merging group and transmitted in the same direction. Therefore, compared with the related art, the illumination system and the projection apparatus of the embodiments of the present invention can achieve the effect of guiding the excitation beam and the conversion beam to the same direction with fewer optical elements and a smaller volume. In addition, the reflecting surface of the reflector is not constituted by the surface of the light combining component. Therefore, the illumination system and the projection apparatus of the embodiment of the invention are less likely to have beam overflow and have good optical efficiency.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。另外本發明的任一實施例或申請專利範圍不須達成本發明所揭露之全部目的或優點或特點。此外，摘要部分和標題僅是用來輔助專利文件搜尋之用，並非用來限制本發明之權利範圍。此外，本說明書或申請專利範圍中提及的“第一”、“第二”等用語僅用於命名元件（Element）的名稱或區別不同實施例或範圍，而並非用來限制元件數量上的上限或下限。The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms “first”, “second” and the like mentioned in the specification or the scope of the patent application are used only for the names of the elements or to distinguish different embodiments or ranges, and are not intended to limit the number of elements. Upper or lower limit.
100、100a‧‧‧照明系統100, 100a‧‧‧ lighting system
110‧‧‧激發光源110‧‧‧Excitation source
120、120f‧‧‧波長轉換元件120, 120f‧‧‧wavelength conversion components
121‧‧‧支撐部121‧‧‧Support
122‧‧‧波長轉換物質122‧‧‧ wavelength conversion substances
124‧‧‧反射部124‧‧‧Reflection Department
126‧‧‧透光部126‧‧‧Transmission Department
128‧‧‧轉軸128‧‧‧ shaft
130‧‧‧反射罩130‧‧‧reflector
132‧‧‧第一反射部132‧‧‧First reflection
134‧‧‧第二反射部134‧‧‧second reflection
140、140a、140b、140c、140d‧‧‧分合光鏡組140, 140a, 140b, 140c, 140d‧‧‧ split light mirror
142、142a、142b、142c、142d‧‧‧第一部分142, 142a, 142b, 142c, 142d‧‧‧ first part
144、144a、144b、144c、144d‧‧‧第二部分144, 144a, 144b, 144c, 144d‧‧‧ second part
146a‧‧‧第三部分146a‧‧‧Part III
200、200a‧‧‧投影裝置200, 200a‧‧‧projector
210‧‧‧濾光元件210‧‧‧ Filter elements
220‧‧‧勻光元件220‧‧‧Dod light components
230‧‧‧光閥230‧‧‧Light valve
AR1、AR2、AR3‧‧‧抗反射鍍膜AR1, AR2, AR3‧‧‧ anti-reflection coating
C‧‧‧會聚透鏡C‧‧‧Converging lens
D‧‧‧方向D‧‧‧ Direction
CR‧‧‧圓心CR‧‧‧ Center
CB‧‧‧轉換光束CB‧‧‧Converting beam
CB1‧‧‧第一轉換子光束CB1‧‧‧ first conversion sub-beam
CB2‧‧‧第二轉換子光束CB2‧‧‧second conversion sub-beam
EB‧‧‧激發光束EB‧‧‧Excitation beam
EB1‧‧‧第一激發子光束EB1‧‧‧first exciton beam
EB2‧‧‧第二激發子光束EB2‧‧‧second exciton beam
F‧‧‧焦點F‧‧‧ focus
IR‧‧‧內徑IR‧‧‧Inner diameter
LA‧‧‧導光組LA‧‧‧Light Guide
P‧‧‧照射區域P‧‧‧Irradiated area
R‧‧‧環形區域R‧‧‧ring area
R1‧‧‧波長轉換區域R1‧‧‧wavelength conversion area
R2‧‧‧反射區域R2‧‧‧reflection area
R3‧‧‧透光區域R3‧‧‧Lighting area
S‧‧‧環型基板S‧‧‧ ring substrate
S1、S2、S3、S4‧‧‧基板S1, S2, S3, S4‧‧‧ substrates
OR‧‧‧外徑OR‧‧‧OD
OL1、OL2、OL3、OL4、OL5、OL6‧‧‧光學層OL1, OL2, OL3, OL4, OL5, OL6‧‧‧ optical layer
圖1A是本發明的一實施例的投影裝置在第一時間區間內的光路示意圖。 圖1B是圖1A的投影裝置在第二時間區間內的光路示意圖。 圖2是圖1A與圖1B中的波長轉換元件的前視示意圖。 圖3是圖1A與圖1B中的波長轉換元件的剖面示意圖。 圖4A是圖1A與圖1B中的分合光鏡組的第一部分的放大示意圖。 圖4B是第一部分的光學層的光譜圖。 圖5A是圖1A與圖1B中的分合光鏡組的第二部分的放大示意圖。 圖5B是第二部分的光學層的光譜圖。 圖6是圖1A與圖1B中的濾光元件的前視示意圖。 圖7A是本發明的另一實施例的照明系統100a在第一時間區間內的光路示意圖。 圖7B是圖7A的照明系統100a在第二時間區間內的光路示意圖。 圖8A是圖7A與圖7B中分合光鏡組的第一部分與第二部分的放大示意圖。 圖8B是第一部分與第二部分共用的光學層的光譜圖。 圖8C是第二部分的光學層的光譜圖。 圖9A是第三部分的放大示意圖。 圖9B是圖9A的光學層的光譜圖。 圖10、圖11A以及圖12為本發明不同實施例的第一部分與第二部分的放大示意圖。 圖11B是圖11A中的第二部分的光學層的光譜圖。 圖13A是本發明另一實施例的第三部分的放大示意圖。 圖13B是圖13A中的第三部分的反射膜的光譜圖。 圖14為本發明另一實施例的波長轉換元件。 圖15為圖14的波長轉換元件的剖面示意圖。 圖16為本發明又一實施例的波長轉換元件。1A is a schematic view of an optical path of a projection apparatus according to an embodiment of the present invention in a first time interval. 1B is a schematic view of the optical path of the projection apparatus of FIG. 1A in a second time interval. 2 is a front elevational view of the wavelength conversion element of FIGS. 1A and 1B. 3 is a schematic cross-sectional view of the wavelength conversion element of FIGS. 1A and 1B. 4A is an enlarged schematic view of a first portion of the split lens assembly of FIGS. 1A and 1B. Figure 4B is a spectrogram of the optical layer of the first portion. Figure 5A is an enlarged schematic view of a second portion of the split lens assembly of Figures 1A and 1B. Figure 5B is a spectrogram of the optical layer of the second portion. Figure 6 is a front elevational view of the filter element of Figures 1A and 1B. Figure 7A is a schematic illustration of the optical path of the illumination system 100a in a first time interval in accordance with another embodiment of the present invention. Figure 7B is a schematic illustration of the optical path of the illumination system 100a of Figure 7A over a second time interval. Figure 8A is an enlarged schematic view showing a first portion and a second portion of the split lens assembly of Figures 7A and 7B. Figure 8B is a spectrogram of the optical layer shared by the first portion and the second portion. Figure 8C is a spectrogram of the optical layer of the second portion. Fig. 9A is an enlarged schematic view of the third portion. Figure 9B is a spectrogram of the optical layer of Figure 9A. 10, 11A and 12 are enlarged schematic views of a first portion and a second portion of different embodiments of the present invention. Figure 11B is a spectrogram of the optical layer of the second portion of Figure 11A. Figure 13A is an enlarged schematic view of a third portion of another embodiment of the present invention. Fig. 13B is a spectrogram of the reflective film of the third portion in Fig. 13A. Figure 14 is a diagram showing a wavelength conversion element according to another embodiment of the present invention. Figure 15 is a cross-sectional view of the wavelength conversion element of Figure 14. Figure 16 is a diagram showing a wavelength conversion element according to still another embodiment of the present invention.
Claims (29)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ??201820135972.5 | 2018-01-26 | ||
| CN201820135972.5 | 2018-01-26 | ||
| CN201820135972.5U CN208255610U (en) | 2018-01-26 | 2018-01-26 | Lighting system and projection arrangement |
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| Publication Number | Publication Date |
|---|---|
| TW201932968A true TW201932968A (en) | 2019-08-16 |
| TWI690764B TWI690764B (en) | 2020-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107103603A TWI690764B (en) | 2018-01-26 | 2018-02-01 | Wavelength conversion element, illumination system and projection apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN208255610U (en) |
| TW (1) | TWI690764B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI738124B (en) * | 2019-11-22 | 2021-09-01 | 香港商女媧創造股份有限公司 | Robotic system having non-planar inner projection of movable mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764352B (en) * | 2019-10-30 | 2021-04-23 | 无锡视美乐激光显示科技有限公司 | Wavelength conversion device, laser fluorescent light source and projection equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308727C (en) * | 2004-02-05 | 2007-04-04 | 台达电子工业股份有限公司 | Colour projection system |
| JP5327529B2 (en) * | 2009-04-22 | 2013-10-30 | カシオ計算機株式会社 | Light source device and projector |
| TWI503578B (en) * | 2014-06-13 | 2015-10-11 | Coretronic Corp | Light source module and projection apparatus |
-
2018
- 2018-01-26 CN CN201820135972.5U patent/CN208255610U/en active Active
- 2018-02-01 TW TW107103603A patent/TWI690764B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI738124B (en) * | 2019-11-22 | 2021-09-01 | 香港商女媧創造股份有限公司 | Robotic system having non-planar inner projection of movable mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN208255610U (en) | 2018-12-18 |
| TWI690764B (en) | 2020-04-11 |
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