TWI614562B - Light source device for laser projector - Google Patents
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- TWI614562B TWI614562B TW106120304A TW106120304A TWI614562B TW I614562 B TWI614562 B TW I614562B TW 106120304 A TW106120304 A TW 106120304A TW 106120304 A TW106120304 A TW 106120304A TW I614562 B TWI614562 B TW I614562B
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Abstract
本發明為一種雷射投影機的光源裝置，其主要是由雷射光源、偏光鏡、分光鏡、螢光體、補償鏡、反射鏡、色輪、及接收投影單元所組成，其藉由該分光鏡能將S偏振藍色光折射導向，並能夠供一P偏振藍色光及一黃色光通過，並搭配補償鏡以及反射鏡的設置，可以讓該雷射光源所產生的藍色光不需藉由透過呈環形排列的反射鏡才能將該藍色光折射導向到色輪，因此，確實能夠達到縮小投影機體積空間的目的。The invention is a light source device for a laser projector, which is mainly composed of a laser light source, a polarizer, a beam splitter, a phosphor, a compensation mirror, a reflector, a color wheel, and a receiving projection unit. The beam splitter can refract S-polarized blue light, and can pass a P-polarized blue light and a yellow light, and with the setting of the compensating mirror and the reflector, the blue light generated by the laser light source does not need to pass The blue light can be refracted and guided to the color wheel only through the mirrors arranged in a circle. Therefore, the purpose of reducing the volume of the projector can be achieved.
Description
本發明係與投影機有關，特別是指一種雷射投影機的光源裝置。The present invention relates to a projector, and particularly to a light source device for a laser projector.
一般投影機在光源部分大都採用以相對較低耗電、發熱較少、體積較小且壽命較長的發光二極體(LED)來作為光源。而雷射光源同時可解決光的指向性及色純度上相對較差、四處散色的發光方式造成光利用率降低，進而導致投影機的投影亮度無法提昇的問題。Generally, in a light source part of a projector, a light emitting diode (LED) with relatively low power consumption, less heat generation, small volume, and long life is used as a light source. The laser light source can simultaneously solve the problems of relatively poor light directivity and color purity, scattered light emitting methods that cause light utilization to decrease, and the problem that the projection brightness of the projector cannot be improved.
參閱圖1所示，顯示一般雷射投影機的光源裝置，其主要是由產生藍色光111的雷射光源11、用以受藍色光111照射而激發出黃色光121的螢光體12、用以容許藍色光111通過及用以將黃色光121折射導向的分光鏡13、複數用以將顏色光光線集中的透鏡14、複數用以將藍色光111折射導向的反射鏡15、受黃色光121及藍色光111互補作用而形成白色光源照射而激發出所需要顏色光的色輪16、及受該色輪16產生的顏色光照射，並先把影像信號經過數位處理，然後再把光投影出來的數位微鏡顯示元件17、以及用以將該數位微鏡顯示元件17所投影出的影像投射出去的投影鏡頭組18。Referring to FIG. 1, a light source device of a general laser projector is shown, which is mainly composed of a laser light source 11 that generates blue light 111, a phosphor 12 that is irradiated with blue light 111 and yellow light 121, and Beamsplitters 13 for allowing blue light 111 to pass and refracting and guiding yellow light 121, multiple lenses 14 for focusing color light rays, mirrors 15 for refracting and directing blue light 111, and yellow light 121 And the blue light 111 complement each other to form a white light source to irradiate a color wheel 16 that emits the required color light, and to be illuminated by the color light generated by the color wheel 16, and first digitally process the image signal, and then project the light The digital micromirror display element 17 and a projection lens group 18 for projecting an image projected by the digital micromirror display element 17.
雖然前述光源裝置所採用的光源是雷射光源11而得以解決光的指向性及色純度上相對較差、解決四處散色的發光方式造成光利用率降低，所導致投影機的投影亮度無法提昇的問題，然而，由於其結構設計使得該投影機無法真正的小型化，特別是該雷射光源11所產生的藍色光111在經過該分光鏡13及螢光體12之後，所產生的藍色光111必須透過至少三個呈環形排列的反射鏡15才能將該藍色光111折射導向與該黃色光121互補形成白色光源、以及折射導向到色輪16，因此，造成該投影機體積過大，對於電子產品發展以「輕、薄、短、小、成本低」的趨勢發展明顯是一種阻礙。Although the light source used in the foregoing light source device is a laser light source 11, the directivity and color purity of the light are relatively poor, and the light emitting method that solves scattered light causes the light utilization rate to decrease, resulting in a failure to improve the projection brightness of the projector. However, due to its structural design, the projector cannot be truly miniaturized, especially the blue light 111 generated by the laser light source 11 after passing through the beam splitter 13 and the phosphor 12 Must pass through at least three mirrors 15 arranged in a circle to refract and guide the blue light 111 to form a white light source complementary to the yellow light 121 and to refract to the color wheel 16. Therefore, the projector is too bulky. For electronic products The development trend of "light, thin, short, small, and low cost" is obviously an obstacle.
本發明的目的在於提供一種雷射投影機的光源裝置，其主要縮小投影機的體積空間。An object of the present invention is to provide a light source device of a laser projector, which mainly reduces the volume of the projector.
緣是，為了達成前述目的，依據本發明所提供一種雷射投影機的光源裝置，包含：一雷射光源，用以產生一藍色光；一偏光鏡，設在該藍色光的路徑上並供該藍色光通過，用以將通過的該藍色光轉變成一S偏振藍色光；一分光鏡，設在該S偏振藍色光的路徑上，用以將該S偏振藍色光折射導向，並能夠供一P偏振藍色光及一黃色光通過；一螢光體，設在該分光鏡將該S偏振藍色光折射導向的路徑上，並能夠供該S偏振藍色光通過及受該S偏振藍色光照射而激發出該黃色光，且該黃色光通過該分光鏡；一補償鏡，設在該S偏振藍色光通過該螢光體的路徑上並供該S偏振藍色光通過，用以將通過的該S偏振藍色光轉變成一圓偏振藍色光；一反射鏡，設在該圓偏振藍色光的路徑上，能夠將該圓偏振藍色光反射導向該補償鏡，使該圓偏振藍色光通過該補償鏡轉變成該P偏振藍色光，該P偏振藍色光再通過該螢光體及分光鏡；一色輪，設在通過該分光鏡的該黃色光及該P偏振藍色光的路徑上，並供該黃色光及該P偏振藍色光照射，以激發出所需的顏色光；一接收投影單元，接收該色輪被激發出的顏色光並將該顏色光投影出去。The reason is that, in order to achieve the foregoing object, a light source device for a laser projector according to the present invention includes: a laser light source for generating a blue light; and a polarizer provided on the path of the blue light and provided for The blue light passes to convert the passed blue light into an S-polarized blue light; a beam splitter is provided on the path of the S-polarized blue light to refract and guide the S-polarized blue light and can provide a P-polarized blue light and a yellow light pass through; a phosphor is provided on a path that the beam splitter guides the S-polarized blue light to refract and directs the S-polarized blue light to pass through and is illuminated by the S-polarized blue light. The yellow light is excited, and the yellow light passes through the beam splitter; a compensating mirror is provided on the path where the S-polarized blue light passes through the phosphor and allows the S-polarized blue light to pass through to pass the S The polarized blue light is converted into a circularly polarized blue light; a reflector is provided on the path of the circularly polarized blue light, and can reflect the circularly polarized blue light to the compensating mirror, so that the circularly polarized blue light is converted into The P partial Blue light, the P-polarized blue light passes through the phosphor and the beam splitter; a color wheel is provided on the path of the yellow light and the P-polarized blue light passing through the beam splitter, and provides the yellow light and the P-polarized light The blue light is irradiated to excite the required color light. A receiving projection unit receives the color light excited by the color wheel and projects the color light.
較佳地，其中該補償鏡為延相器或四分之一波片。Preferably, the compensation mirror is a phase extender or a quarter wave plate.
較佳地，其中該接收投影單元包括一數位微鏡顯示元件及一投影鏡頭組，該數位微鏡顯示元件設在該色輪與該投影鏡頭組之間，該數位微鏡顯示元件接收該色輪被激發出的顏色光並經過數位處理後投影出去，該投影鏡頭組將該數位微鏡顯示元件所投影出的影像投射出去。Preferably, the receiving projection unit includes a digital micromirror display element and a projection lens group, the digital micromirror display element is disposed between the color wheel and the projection lens group, and the digital micromirror display element receives the color The color light excited by the wheel is projected after being digitally processed. The projection lens group projects an image projected by the digital micromirror display element.
較佳地，其中更包含一前置反射鏡，該前置反射鏡設在該分光鏡與該色輪之間，用以將通過該分光鏡的該黃色光及該P偏振藍色光反射導向該色輪。Preferably, it further comprises a front reflector, which is disposed between the beam splitter and the color wheel, and is configured to reflect the yellow light and the P-polarized blue light passing through the beam splitter and guide the light Color wheel.
較佳地，其中更包含複數個透鏡，其分別設在該偏光鏡與該分光鏡之間、該分光鏡與該螢光體之間、該螢光體與該補償鏡之間、以及該分光鏡與該色輪之間。Preferably, it further comprises a plurality of lenses respectively disposed between the polarizer and the beam splitter, between the beam splitter and the phosphor, between the phosphor and the compensation lens, and the beam splitter Between the mirror and the color wheel.
藉此，藉由該分光鏡能夠將將該S偏振藍色光折射導向，並能夠供一P偏振藍色光及一黃色光通過，並搭配補償鏡以及反射鏡的設置，可以讓該雷射光源所產生的藍色光不需藉由透過呈環形排列的反射鏡才能將該藍色光折射導向到色輪，因此，確實能夠達到縮小投影機體積空間的目的。Thereby, the S-polarized blue light can be refracted and guided by the beam splitter, and a P-polarized blue light and a yellow light can be passed, and the arrangement of the compensating mirror and the reflector can be used to allow the laser light source to The generated blue light does not need to be guided to the color wheel by passing through the mirrors arranged in a ring, so the purpose of reducing the volume of the projector can be achieved.
另外，同樣為了達成前述目的，依據本發明所提供一種雷射投影機的光源裝置，包含：一雷射光源，用以產生一藍色光；一偏光鏡，設在該藍色光的路徑上並供該藍色光通過，用以將通過的該藍色光轉變成一S偏振藍色光；一分光鏡，設在該S偏振藍色光的路徑上，用以將該S偏振藍色光折射導向，並能夠供一P偏振藍色光及一黃色光通過；一補償鏡，設在該分光鏡將該S偏振藍色光折射導向的路徑上，用以將通過的該S偏振藍色光轉變成一圓偏振藍色光；一螢光體，設在該圓偏振藍色光的路徑上，並能夠受該圓偏振藍色光照射而激發出該黃色光，且該黃色光通過該分光鏡，以及將該圓偏振藍色光反射導向該補償鏡，使該圓偏振藍色光通過該補償鏡轉變成該P偏振藍色光，該P偏振藍色光再通過該分光鏡；一色輪，設在通過該分光鏡的該黃色光及該P偏振藍色光的路徑上，並供該黃色光及該P偏振藍色光照射，以激發出所需的顏色光；一接收投影單元，接收該色輪被激發出的顏色光並將該顏色光投影出去。In addition, in order to achieve the foregoing object, a light source device for a laser projector according to the present invention includes: a laser light source for generating a blue light; and a polarizer provided on the path of the blue light and provided for The blue light passes to convert the passed blue light into an S-polarized blue light; a beam splitter is provided on the path of the S-polarized blue light to refract and guide the S-polarized blue light and can provide a P-polarized blue light and a yellow light pass through; a compensating mirror is set on the path that the beam splitter redirects the S-polarized blue light to convert the passed S-polarized blue light into a circularly polarized blue light; a fluorescent A light body is provided on the path of the circularly polarized blue light, and can be excited by the circularly polarized blue light to excite the yellow light, and the yellow light passes through the beam splitter and reflects the circularly polarized blue light to the compensation. A circularly polarized blue light through the compensating mirror into the P-polarized blue light, and the P-polarized blue light passes through the beam splitter; a color wheel is provided on the yellow light and the P-polarized blue light passing through the beam splitter On the path, and for irradiating the yellow light and the P-polarized blue color light in order to excite desired; a projection receiving means receives the color wheel is excited and the color of the light color of light projected out.
較佳地，其中該補償鏡為延相器或四分之一波片。Preferably, the compensation mirror is a phase extender or a quarter wave plate.
較佳地，其中該接收投影單元包括一數位微鏡顯示元件及一投影鏡頭組，該數位微鏡顯示元件設在該色輪與該投影鏡頭組之間，該數位微鏡顯示元件接收該色輪被激發出的顏色光並經過數位處理後投影出去，該投影鏡頭組將該數位微鏡顯示元件所投影出的影像投射出去。Preferably, the receiving projection unit includes a digital micromirror display element and a projection lens group, the digital micromirror display element is disposed between the color wheel and the projection lens group, and the digital micromirror display element receives the color The color light excited by the wheel is projected after being digitally processed. The projection lens group projects an image projected by the digital micromirror display element.
較佳地，其中更包含一前置反射鏡，該前置反射鏡設在該分光鏡與該色輪之間，用以將通過該分光鏡的該黃色光及該P偏振藍色光反射導向該色輪。Preferably, it further comprises a front reflector, which is disposed between the beam splitter and the color wheel, and is configured to reflect the yellow light and the P-polarized blue light passing through the beam splitter and guide the light Color wheel.
較佳地，其中更包含複數個透鏡，其分別設在該偏光鏡與該分光鏡之間、該分光鏡與該補償鏡之間、該補償鏡與螢光體之間、以及該分光鏡與該色輪之間。Preferably, it further comprises a plurality of lenses, which are respectively disposed between the polarizer and the beam splitter, between the beam splitter and the compensation mirror, between the compensation mirror and the phosphor, and between the beam splitter and the beam splitter. Between the color wheels.
藉此，藉由該分光鏡能夠將將該S偏振藍色光折射導向，並能夠供一P偏振藍色光及一黃色光通過，並搭配偏光鏡以及補償鏡的設置，可以讓該雷射光源所產生的藍色光不需藉由透過呈環形排列的反射鏡才能將該藍色光折射導向到色輪，因此，確實能夠達到縮小投影機體積空間的目的。Thereby, the S-polarized blue light can be refracted and guided by the beam splitter, and a P-polarized blue light and a yellow light can be passed, and with the setting of the polarizer and the compensating mirror, the laser light source can be The generated blue light does not need to be guided to the color wheel by passing through the mirrors arranged in a ring, so the purpose of reducing the volume of the projector can be achieved.
有關本發明為達成上述目的，所採用之技術、手段及其他之功效，茲舉六較佳可行實施例並配合圖式詳細說明如後。Regarding the technology, means, and other effects adopted by the present invention to achieve the foregoing objectives, six preferred feasible embodiments are described in detail below with reference to the drawings.
在提出詳細說明之前，要注意的是，在以下的說明中，類似的元件是以相同的編號來表示。Before proposing a detailed description, it should be noted that in the following description, similar elements are represented by the same reference numerals.
參閱圖2所示，本發明第一實施例所提供的一種雷射投影機的光源裝置，其主要是由一雷射光源20、一偏光鏡30、一分光鏡40、一螢光體50、一補償鏡60、一反射鏡70、一色輪80、及一接收投影單元91所組成，其中：Referring to FIG. 2, a light source device for a laser projector according to a first embodiment of the present invention is mainly composed of a laser light source 20, a polarizer 30, a beam splitter 40, a phosphor 50, A compensation mirror 60, a reflecting mirror 70, a color wheel 80, and a receiving projection unit 91, wherein:
該雷射光源20，用以產生一藍色光21；本實施例中，該雷射光源20為雷射二極光 (LD)。The laser light source 20 is configured to generate a blue light 21. In this embodiment, the laser light source 20 is a laser diode (LD).
該偏光鏡30，設在該藍色光21的路徑上並供該藍色光21通過，用以將通過的該藍色光21轉變成一S偏振藍色光31。The polarizer 30 is disposed on the path of the blue light 21 and allows the blue light 21 to pass therethrough, and is used to convert the passed blue light 21 into an S-polarized blue light 31.
該分光鏡40，設在該S偏振藍色光31的路徑上，用以將該S偏振藍色光31折射導向，並能夠供一P偏振藍色光62及一黃色光51通過。The beam splitter 40 is disposed on the path of the S-polarized blue light 31 to refract and guide the S-polarized blue light 31 and can pass a P-polarized blue light 62 and a yellow light 51 through.
該螢光體50，設在該分光鏡40將該S偏振藍色光31折射導向的路徑上，並能夠供該S偏振藍色光31通過及受該S偏振藍色光31照射而激發出該黃色光51，且該黃色光51通過該分光鏡40。The phosphor 50 is disposed on a path where the dichroic mirror 40 refracts and guides the S-polarized blue light 31, and is capable of allowing the S-polarized blue light 31 to pass through and be irradiated by the S-polarized blue light 31 to excite the yellow light. 51, and the yellow light 51 passes through the beam splitter 40.
該補償鏡60，設在該S偏振藍色光31通過該螢光體50的路徑上並供該S偏振藍色光31通過，用以將通過的該S偏振藍色光31轉變成一圓偏振藍色光61；本實施例中，該補償鏡60為四分之一波片，當然也可以是延相器。The compensating mirror 60 is disposed on a path through which the S-polarized blue light 31 passes through the phosphor 50 and passes the S-polarized blue light 31 to convert the passed S-polarized blue light 31 into a circularly-polarized blue light 61. In this embodiment, the compensation mirror 60 is a quarter-wave plate, and of course, it may be a phase extender.
該反射鏡70，設在該圓偏振藍色光61的路徑上，能夠將該圓偏振藍色光61反射導向該補償鏡60，使該圓偏振藍色光61通過該補償鏡60轉變成該P偏振藍色光62，該P偏振藍色光62再通過該螢光體50及分光鏡40。The reflecting mirror 70 is disposed on the path of the circularly polarized blue light 61, and can reflect the circularly polarized blue light 61 to the compensation mirror 60, so that the circularly polarized blue light 61 is converted into the P-polarized blue by the compensation mirror 60. The colored light 62 and the P-polarized blue light 62 pass through the phosphor 50 and the beam splitter 40.
該色輪80，設在通過該分光鏡40的該黃色光51及該P偏振藍色光62的路徑上，並供該黃色光51及該P偏振藍色光62照射，以激發出所需的顏色光；本實施例中，該色輪80為持續旋轉的面板，且該色輪80的受光表面上具有四個呈環狀排列的光照區塊，其分別為黃色光照區塊、紅色光照區塊、藍色光照區塊及綠色光照區塊；各光照區塊受該黃色光51及該P偏振藍色光62互補作用而形成白色光源照射，以產生所需的紅色光、綠色光、藍色光或黃色光等顏色光。由於該色輪80的結構為習知構件，且其作動方式與習知相同，亦非本發明之創作重點，因此對該色輪80之詳細結構與作動方式不再詳述。The color wheel 80 is provided on the path of the yellow light 51 and the P-polarized blue light 62 passing through the beam splitter 40 and is irradiated by the yellow light 51 and the P-polarized blue light 62 to excite a desired color. In this embodiment, the color wheel 80 is a continuously rotating panel, and the light receiving surface of the color wheel 80 has four circularly arranged light blocks, which are respectively a yellow light block and a red light block. , Blue light blocks and green light blocks; each light block is illuminated by the yellow light 51 and the P-polarized blue light 62 to form a white light source to complement each other to produce the required red light, green light, blue light or Color light such as yellow light. Since the structure of the color wheel 80 is a conventional component, and its operation mode is the same as the conventional one, and it is not the focus of the invention, the detailed structure and operation mode of the color wheel 80 will not be described in detail.
該接收投影單元91，接收該色輪80被激發出的顏色光將該顏色光投影出去。本實施例中，該接收投影單元91包括一數位微鏡顯示元件911及一投影鏡頭組912，該數位微鏡顯示元件911設在該色輪80與該投影鏡頭組912之間，該數位微鏡顯示元件911接收該色輪80被激發出的紅色光、綠色光、藍色光或黃色光等顏色光並經過數位處理後投影出去，該投影鏡頭組912將該數位微鏡顯示元件911所投影出的影像投射出去。同樣的，該接收投影單元91為習知構件，且其作動方式與習知相同，亦非本發明之創作重點，因此對該接收投影單元91之詳細結構與作動方式不再詳述。The receiving projection unit 91 receives the color light excited by the color wheel 80 and projects the color light. In this embodiment, the receiving projection unit 91 includes a digital micromirror display element 911 and a projection lens group 912. The digital micromirror display element 911 is disposed between the color wheel 80 and the projection lens group 912. The mirror display element 911 receives red light, green light, blue light, or yellow light excited by the color wheel 80 and projects it after digital processing. The projection lens group 912 projects the digital micromirror display element 911. The output image is projected. Similarly, the receiving projection unit 91 is a conventional component, and its operation mode is the same as the conventional one, and it is not the focus of the invention. Therefore, the detailed structure and operation mode of the receiving projection unit 91 will not be described in detail.
以上所述即為本發明第一實施例各主要構件之結構及其組態說明。至於第一實施例的光路作動方式與功效說明如下。The above is the structure and configuration description of the main components of the first embodiment of the present invention. As for the operation mode and the effect of the optical path of the first embodiment, the description is as follows.
參閱圖2所示，當該雷射光源20產生的該藍色光21通過該偏光鏡30時，該偏光鏡30將該藍色光21轉變成一S偏振藍色光31。此時，該當該S偏振藍色光31照射到該分光鏡40時，由於該分光鏡40在鍍膜設計後無法被該S偏振藍色光31通過，但是容許被P偏振藍色光62及黃色光51通過，因此，該分光鏡40將該S偏振藍色光31折射導向依序設置的螢光體50、補償鏡60、反射鏡70方向。Referring to FIG. 2, when the blue light 21 generated by the laser light source 20 passes through the polarizer 30, the polarizer 30 converts the blue light 21 into an S-polarized blue light 31. At this time, when the S-polarized blue light 31 is irradiated to the beam splitter 40, since the beam splitter 40 cannot pass through the S-polarized blue light 31 after the coating design, it is allowed to pass through the P-polarized blue light 62 and yellow light 51 Therefore, the dichroic mirror 40 refracts the S-polarized blue light 31 in the direction of the phosphor 50, the compensating mirror 60, and the reflecting mirror 70 which are sequentially arranged.
當該S偏振藍色光31通過該螢光體50時，該S偏振藍色光31會照射該螢光體50而激發出該黃色光51，此時黃色光51的路徑會朝向該分光鏡40照射，並通過該分光鏡40；此外，通過該螢光體50的該S偏振藍色光31在通過該補償鏡60(四分之一波片)時，該補償鏡60會將該S偏振藍色光31轉變成一圓偏振藍色光61，並朝向該反射鏡70方向照射。當該圓偏振藍色光61照射到該反射鏡70時，該反射鏡70會等角地將該圓偏振藍色光61反射回去，即朝該補償鏡60、螢光體50、及分光鏡40方向照射。當該圓偏振藍色光61通過該補償鏡60時，該補償鏡60會將該圓偏振藍色光61轉變成P偏振藍色光62。而由於本發明將該分光鏡40在鍍膜設計後容許被該P偏振藍色光62通過，因此，經反射通過該補償鏡60而變成該P偏振藍色光62則直接通過該分光鏡40，進而與該螢光體50被激發所產生的黃色光51相互補而形成白色光源照射該色輪80，以產生所需的顏色光，並由該接收投影單元91所接收與投影出去。When the S-polarized blue light 31 passes through the phosphor 50, the S-polarized blue light 31 will illuminate the phosphor 50 and excite the yellow light 51. At this time, the path of the yellow light 51 will be irradiated toward the beam splitter 40 And passes through the beam splitter 40; In addition, when the S-polarized blue light 31 passing through the phosphor 50 passes through the compensation mirror 60 (quarter wave plate), the compensation mirror 60 will convert the S-polarized blue light 31 is converted into a circularly polarized blue light 61 and is irradiated toward the reflecting mirror 70. When the circularly polarized blue light 61 is irradiated to the reflector 70, the reflective mirror 70 will reflect the circularly polarized blue light 61 at an equal angle, that is, the circularly polarized blue light 61 is irradiated toward the compensation mirror 60, the phosphor 50, and the beam splitter 40. . When the circularly polarized blue light 61 passes through the compensation mirror 60, the compensation mirror 60 converts the circularly polarized blue light 61 into P-polarized blue light 62. However, since the beam splitter 40 is allowed to pass by the P-polarized blue light 62 after the coating design of the present invention, the P-polarized blue light 62 converted into the P-polarized blue light 62 after passing through the compensation mirror 60 passes directly through the beam splitter 40, and further The fluorescent body 50 is complementary to the yellow light 51 generated by the excitation to form a white light source to illuminate the color wheel 80 to generate the required color light, which is received and projected by the receiving projection unit 91.
據此，藉由該分光鏡40能夠將將該S偏振藍色光31折射導向，並能夠供一P偏振藍色光62及一黃色光51通過，並搭配補償鏡60以及反射鏡70的設置，可以讓該雷射光源20所產生的藍色光21不需藉由透過呈環形排列的反射鏡70才能將該藍色光21折射導向到色輪80，也就是，本發明可以將除了該雷射光源20之外的偏光鏡30、分光鏡40、螢光體50、補償鏡60、反射鏡70、色輪80、及接收投影單元91設在同一軸線上，因此，確實能夠達到縮小投影機體積空間的目的。According to this, the S-polarized blue light 31 can be refracted and guided by the beam splitter 40, and a P-polarized blue light 62 and a yellow light 51 can be passed through, and the arrangement of the compensating mirror 60 and the reflecting mirror 70 can be matched. The blue light 21 generated by the laser light source 20 can be refracted and guided to the color wheel 80 without passing through the mirror 70 arranged in a ring shape. That is, the present invention can Other polarizers 30, beam splitters 40, phosphors 50, compensation mirrors 60, mirrors 70, color wheel 80, and receiving projection unit 91 are provided on the same axis. Therefore, it is indeed possible to reduce the volume of the projector. purpose.
參閱圖3所示，本發明第二實施例所提供的一種雷射投影機的光源裝置，其同樣是由雷射光源20、偏光鏡30、分光鏡40、螢光體50、補償鏡60、反射鏡70、色輪80、及接收投影單元91所組成，由於其組態作動方式及功效同於第一實施例，故不再贅述，至於第二實施例不同之處在於：Referring to FIG. 3, a light source device for a laser projector according to a second embodiment of the present invention is also composed of a laser light source 20, a polarizer 30, a beam splitter 40, a phosphor 50, a compensation mirror 60, The reflecting mirror 70, the color wheel 80, and the receiving projection unit 91 are composed. Since the configuration and operation methods and effects are the same as those of the first embodiment, the details are not described again. The differences of the second embodiment are as follows:
該雷射投影機的光源裝置更包含一前置反射鏡93，該前置反射鏡93設在該分光鏡40與該色輪80之間，用以將通過該分光鏡40的該黃色光51及該P偏振藍色光62反射導向該色輪80，藉以縮短該光源裝置排列的長度，以符合需求。The light source device of the laser projector further includes a front reflector 93, which is disposed between the beam splitter 40 and the color wheel 80, and is configured to pass the yellow light 51 passing through the beam splitter 40. And the P-polarized blue light 62 is reflected and guided to the color wheel 80, thereby shortening the length of the light source device arrangement to meet the requirements.
參閱圖4所示，本發明第三實施例所提供的一種雷射投影機的光源裝置，其同樣是由雷射光源20、偏光鏡30、分光鏡40、螢光體50、補償鏡60、反射鏡70、色輪80、及接收投影單元91所組成，由於其組態作動方式及功效同於第一實施例，故不再贅述，至於第三實施例不同之處在於：Referring to FIG. 4, a light source device for a laser projector according to a third embodiment of the present invention is also composed of a laser light source 20, a polarizer 30, a beam splitter 40, a phosphor 50, a compensation mirror 60, The reflector 70, the color wheel 80, and the receiving projection unit 91 are composed. Since the configuration and operation methods and effects are the same as those of the first embodiment, the details will not be repeated. The third embodiment is different in that:
該雷射投影機的光源裝置更包含複數個透鏡95，其分別設在該偏光鏡30與該分光鏡40之間、該分光鏡40與該螢光體50之間、該螢光體50與該補償鏡60之間、以及該分光鏡40與該色輪80之間。藉以將通過上述各構件的光線集中射出。The light source device of the laser projector further includes a plurality of lenses 95, which are respectively disposed between the polarizer 30 and the beam splitter 40, between the beam splitter 40 and the phosphor 50, and the phosphor 50 and Between the compensation mirror 60 and between the beam splitter 40 and the color wheel 80. Thereby, the light rays passing through the above-mentioned members are collectively emitted.
參閱圖5所示，本發明第四實施例所提供的一種雷射投影機的光源裝置，其主要是由一雷射光源20、一偏光鏡30、一分光鏡40、一補償鏡60 、一螢光體50、一色輪80、及一接收投影單元91所組成，該第四實施例與第一實施例不同處在於將該補償鏡60設在該分光鏡40與螢光體50之間，且該螢光體50本身具有反射功能，同時省略反射鏡，以達成結構更為精簡的雷射投影機的光源裝置。其中：Referring to FIG. 5, a light source device for a laser projector according to a fourth embodiment of the present invention is mainly composed of a laser light source 20, a polarizer 30, a beam splitter 40, a compensation mirror 60, and a The fourth embodiment is different from the first embodiment in that the compensation lens 60 is disposed between the beam splitter 40 and the phosphor 50. The phosphor 50 includes a phosphor 50, a color wheel 80, and a receiving projection unit 91. In addition, the phosphor 50 itself has a reflection function, and the reflector is omitted to achieve a light source device of a laser projector with a more simplified structure. among them:
該雷射光源20，用以產生一藍色光21；本實施例中，該雷射光源20為雷射二極光 (LD)。The laser light source 20 is configured to generate a blue light 21. In this embodiment, the laser light source 20 is a laser diode (LD).
該偏光鏡30，設在該藍色光21的路徑上並供該藍色光21通過，用以將通過的該藍色光21轉變成一S偏振藍色光31。The polarizer 30 is disposed on the path of the blue light 21 and allows the blue light 21 to pass therethrough, and is used to convert the passed blue light 21 into an S-polarized blue light 31.
該分光鏡40，設在該S偏振藍色光31的路徑上，用以將該S偏振藍色光31折射導向，並能夠供一P偏振藍色光62及一黃色光51通過。The beam splitter 40 is disposed on the path of the S-polarized blue light 31 to refract and guide the S-polarized blue light 31 and can pass a P-polarized blue light 62 and a yellow light 51 through.
該補償鏡60，設在該分光鏡40將該S偏振藍色光31折射導向的路徑上，用以將通過的該S偏振藍色光31轉變成一圓偏振藍色光61。The compensating mirror 60 is disposed on a path that the beam splitter 40 refracts and guides the S-polarized blue light 31 to convert the S-polarized blue light 31 passing through into a circularly-polarized blue light 61.
該螢光體50，設在該圓偏振藍色光61的路徑上，並能夠受該圓偏振藍色光61照射而激發出該黃色光51，且該黃色光51先通過該補償鏡60再通過該分光鏡40，以及將該圓偏振藍色光61反射導向該補償鏡60，使該圓偏振藍色光61通過該補償鏡60轉變成該P偏振藍色光62，該P偏振藍色光62再通過該分光鏡40。The phosphor 50 is disposed on the path of the circularly polarized blue light 61 and can be excited by the circularly polarized blue light 61 to excite the yellow light 51, and the yellow light 51 first passes through the compensation mirror 60 and then passes through the compensation lens 60. The beam splitter 40 and the circularly polarized blue light 61 are reflected and guided to the compensation mirror 60, so that the circularly polarized blue light 61 is converted into the P-polarized blue light 62 by the compensation lens 60, and the P-polarized blue light 62 passes through the light splitter镜 40. The mirror 40.
該色輪80，設在通過該分光鏡40的該黃色光51及該P偏振藍色光62的路徑上，並供該黃色光51及該P偏振藍色光62照射，以激發出所需的顏色光；由於該色輪80的作用及功效同於第一實施例，故不再詳述。The color wheel 80 is provided on the path of the yellow light 51 and the P-polarized blue light 62 passing through the beam splitter 40 and is irradiated by the yellow light 51 and the P-polarized blue light 62 to excite a desired color. Light; since the function and effect of the color wheel 80 are the same as those of the first embodiment, it will not be described in detail.
該接收投影單元91，接收該色輪80被激發出的顏色光將該顏色光投影出去。由於該接收投影單元91的作用及功效同於第一實施例，故不再詳述。The receiving projection unit 91 receives the color light excited by the color wheel 80 and projects the color light. Since the function and effect of the receiving projection unit 91 are the same as those of the first embodiment, detailed description is omitted.
以上所述即為本發明第二實施例各主要構件之結構及其組態說明。至於第二實施例的光路作動方式與功效說明如下。The above is the structure and configuration description of the main components of the second embodiment of the present invention. As for the operation mode and effect of the optical path in the second embodiment, it is described below.
參閱圖5所示，當該雷射光源20產生的該藍色光21通過該偏光鏡30時，該偏光鏡30將該藍色光21轉變成一S偏振藍色光31。此時，該當該S偏振藍色光31照射到該分光鏡40時，由於該分光鏡40在鍍膜設計後無法被該S偏振藍色光31通過，但是容許被P偏振藍色光62及黃色光51通過，因此，該分光鏡40將該S偏振藍色光31折射導向依序設置的補償鏡60及螢光體50方向。Referring to FIG. 5, when the blue light 21 generated by the laser light source 20 passes through the polarizer 30, the polarizer 30 converts the blue light 21 into an S-polarized blue light 31. At this time, when the S-polarized blue light 31 is irradiated to the beam splitter 40, since the beam splitter 40 cannot pass through the S-polarized blue light 31 after the coating design, it is allowed to pass through the P-polarized blue light 62 and yellow light 51 Therefore, the dichroic mirror 40 refracts the S-polarized blue light 31 in the direction of the compensating mirror 60 and the phosphor 50 which are sequentially arranged.
當該S偏振藍色光31通過該補償鏡60(四分之一波片)時，該補償鏡60會將該S偏振藍色光31轉變成一圓偏振藍色光61，並朝向該螢光體50方向照射。當該圓偏振藍色光61照射該螢光體50時，該螢光體61受激發而產生該黃色光51，且該黃色光51的會朝向該分光鏡40方向照射，並通過該分光鏡40；此外，該圓偏振藍色光61照射該螢光體50時，該螢光體50會將該圓偏振藍色光61反射導向該補償鏡60，使該圓偏振藍色光61通過該補償鏡60轉變成該P偏振藍色光62，而由於本發明將該分光鏡40在鍍膜設計後容許被該P偏振藍色光62通過，因此，經反射通過該補償鏡60而變成該P偏振藍色光62則直接通過該分光鏡40，進而與該螢光體50被激發所產生的黃色光51相互補而形成白色光源照射該色輪80，以產生所需的顏色光，並由該接收投影單元91所接收與投影出去。When the S-polarized blue light 31 passes through the compensating mirror 60 (a quarter-wave plate), the compensating mirror 60 will convert the S-polarized blue light 31 into a circularly polarized blue light 61 and face the phosphor 50 Irradiation. When the circularly polarized blue light 61 irradiates the phosphor 50, the phosphor 61 is excited to generate the yellow light 51, and the yellow light 51 is irradiated toward the beam splitter 40 and passes through the beam splitter 40. In addition, when the circularly polarized blue light 61 is irradiated to the phosphor 50, the fluorescent body 50 will reflect the circularly polarized blue light 61 and guide the compensation mirror 60, so that the circularly polarized blue light 61 is transformed by the compensation mirror 60 The P-polarized blue light 62 is formed, and since the beam splitter 40 is allowed to pass by the P-polarized blue light 62 after the coating design of the present invention, the P-polarized blue light 62 is directly reflected after passing through the compensation mirror 60. Through the beam splitter 40, it is complementary to the yellow light 51 generated when the phosphor 50 is excited to form a white light source to illuminate the color wheel 80 to generate the required color light, which is received by the receiving projection unit 91. With projection going out.
據此，藉由該分光鏡40能夠將將該S偏振藍色光31折射導向，並能夠供一P偏振藍色光62及一黃色光51通過，並搭配補償鏡60以及螢光體50的設置，可以讓該雷射光源20所產生的藍色光21不需藉由透過呈環形排列的反射鏡70才能將該藍色光21折射導向到色輪80，同時相較於第一實施例而言，更省略了反射鏡的元件，除了達到縮小投影機體積空間的目的之外，更達成結構更為精簡的雷射投影機的光源裝置。According to this, the S-polarized blue light 31 can be refracted and guided by the beam splitter 40, and a P-polarized blue light 62 and a yellow light 51 can be passed through, and the compensation mirror 60 and the phosphor 50 are arranged. The blue light 21 generated by the laser light source 20 can be refracted and guided to the color wheel 80 without passing through the mirror 70 arranged in a ring shape. At the same time, compared with the first embodiment, Omitting the components of the reflector, in addition to achieving the purpose of reducing the volume of the projector, the light source device of the laser projector with a more compact structure is also achieved.
參閱圖6所示，本發明第五實施例所提供的一種雷射投影機的光源裝置，其同樣是由雷射光源20、偏光鏡30、分光鏡40、補償鏡60 、螢光體50、色輪80、及接收投影單元91所組成，由於其組態作動方式及功效同於第四實施例，故不再贅述，至於第五實施例不同之處在於：Referring to FIG. 6, a light source device for a laser projector according to a fifth embodiment of the present invention is also composed of a laser light source 20, a polarizer 30, a beam splitter 40, a compensation mirror 60, a phosphor 50, The configuration of the color wheel 80 and the receiving projection unit 91 is the same as that of the fourth embodiment because it is configured and operated in the same manner as the fourth embodiment, so it will not be repeated here. The fifth embodiment is different in that:
該雷射投影機的光源裝置更包含一前置反射鏡93，該前置反射鏡93設在該分光鏡40與該色輪80之間，用以將通過該分光鏡40的該黃色光51及該P偏振藍色光62反射導向該色輪80，藉以縮短該光源裝置排列的長度，以符合需求。The light source device of the laser projector further includes a front reflector 93, which is disposed between the beam splitter 40 and the color wheel 80, and is configured to pass the yellow light 51 passing through the beam splitter 40. And the P-polarized blue light 62 is reflected and guided to the color wheel 80, thereby shortening the length of the light source device arrangement to meet the requirements.
參閱圖7所示，本發明第六實施例所提供的一種雷射投影機的光源裝置，其同樣是由雷射光源20、偏光鏡30、分光鏡40、補償鏡60 、螢光體50、色輪80、及接收投影單元91所組成，由於其組態作動方式及功效同於第四實施例，故不再贅述，至於第六實施例不同之處在於：Referring to FIG. 7, a light source device for a laser projector according to a sixth embodiment of the present invention is also composed of a laser light source 20, a polarizer 30, a beam splitter 40, a compensation mirror 60, a phosphor 50, The configuration of the color wheel 80 and the receiving projection unit 91 is the same as that of the fourth embodiment, so it will not be repeated here. The sixth embodiment is different in that:
該雷射投影機的光源裝置更包含複數個透鏡95，其分別設在該偏光鏡30與該分光鏡40之間、該分光鏡40與該補償鏡60之間、該補償鏡60與螢光體50之間、以及該分光鏡40與該色輪50之間。藉以將通過上述各構件的光線集中射出。The light source device of the laser projector further includes a plurality of lenses 95, which are respectively disposed between the polarizer 30 and the beam splitter 40, between the beam splitter 40 and the compensation mirror 60, the compensation mirror 60 and fluorescent light. Between the bodies 50 and between the beam splitter 40 and the color wheel 50. Thereby, the light rays passing through the above-mentioned members are collectively emitted.
綜上所述，上述各實施例及圖式僅為本發明之較佳實施例而已，當不能以之限定本發明實施之範圍，舉凡依本發明申請專利範圍所作之均等變化與修飾，皆應屬本發明專利涵蓋之範圍內。In summary, the above-mentioned embodiments and drawings are merely preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by it, all equal changes and modifications made in accordance with the scope of the patent application of the present invention should be applied. It is within the scope of the invention patent.
[習知]
11‧‧‧雷射光源
111‧‧‧藍色光
12‧‧‧螢光體
121‧‧‧黃色光
13‧‧‧分光鏡
14‧‧‧透鏡
15‧‧‧反射鏡
16‧‧‧色輪
17‧‧‧數位微鏡顯示元件
18‧‧‧投影鏡頭組
[本發明]
20‧‧‧雷射光源
21‧‧‧藍色光
30‧‧‧偏光鏡
31‧‧‧S偏振藍色光
40‧‧‧分光鏡
50‧‧‧螢光體
51‧‧‧黃色光
60‧‧‧補償鏡
61‧‧‧圓偏振藍色光
62‧‧‧P偏振藍色光
70‧‧‧反射鏡
80‧‧‧色輪
91‧‧‧接收投影單元
911‧‧‧數位微鏡顯示元件
921‧‧‧投影鏡頭組
93‧‧‧前置反射鏡
95‧‧‧透鏡[Habitant]
11‧‧‧laser light source
111‧‧‧ blue light
12‧‧‧ phosphor
121‧‧‧ yellow light
13‧‧‧ Beamsplitter
14‧‧‧ lens
15‧‧‧Reflector
16‧‧‧ Color Wheel
17‧‧‧ Digital Micromirror Display Element
18‧‧‧ projection lens group
[this invention]
20‧‧‧laser light source
21‧‧‧ blue light
30‧‧‧Polarizer
31‧‧‧S polarized blue light
40‧‧‧ Beamsplitter
50‧‧‧ phosphor
51‧‧‧ yellow light
60‧‧‧Compensation mirror
61‧‧‧ circularly polarized blue light
62‧‧‧P polarized blue light
70‧‧‧Reflector
80‧‧‧ color wheel
91‧‧‧Receiving projection unit
911‧‧‧digital micromirror display element
921‧‧‧Projection lens group
93‧‧‧ front mirror
95‧‧‧ lens
圖1是一般雷射投影機的光源裝置的配置示意圖。 圖2是本發明第一實施例的示意圖。 圖3是本發明第二實施例的示意圖。 圖4是本發明第三實施例的示意圖。 圖5是本發明第四實施例的示意圖。 圖6是本發明第五實施例的示意圖。 圖7是本發明第六實施例的示意圖。FIG. 1 is a schematic configuration diagram of a light source device of a general laser projector. FIG. 2 is a schematic diagram of the first embodiment of the present invention. FIG. 3 is a schematic diagram of a second embodiment of the present invention. FIG. 4 is a schematic diagram of a third embodiment of the present invention. FIG. 5 is a schematic diagram of a fourth embodiment of the present invention. FIG. 6 is a schematic diagram of a fifth embodiment of the present invention. FIG. 7 is a schematic diagram of a sixth embodiment of the present invention.
20‧‧‧雷射光源 20‧‧‧laser light source
21‧‧‧藍色光 21‧‧‧ blue light
30‧‧‧偏光鏡 30‧‧‧Polarizer
31‧‧‧S偏振藍色光 31‧‧‧S polarized blue light
40‧‧‧分光鏡 40‧‧‧ Beamsplitter
50‧‧‧螢光體 50‧‧‧ phosphor
51‧‧‧黃色光 51‧‧‧ yellow light
60‧‧‧補償鏡 60‧‧‧Compensation mirror
61‧‧‧圓偏振藍色光 61‧‧‧ circularly polarized blue light
62‧‧‧P偏振藍色光 62‧‧‧P polarized blue light
70‧‧‧反射鏡 70‧‧‧Reflector
80‧‧‧色輪 80‧‧‧ color wheel
91‧‧‧接收投影單元 91‧‧‧Receiving projection unit
911‧‧‧數位微鏡顯示元件 911‧‧‧digital micromirror display element
912‧‧‧投影鏡頭組 912‧‧‧Projection lens group
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106120304A TWI614562B (en) | 2017-06-19 | 2017-06-19 | Light source device for laser projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106120304A TWI614562B (en) | 2017-06-19 | 2017-06-19 | Light source device for laser projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI614562B true TWI614562B (en) | 2018-02-11 |
| TW201905572A TW201905572A (en) | 2019-02-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW106120304A TWI614562B (en) | 2017-06-19 | 2017-06-19 | Light source device for laser projector |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI614562B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656355A (en) * | 2013-11-25 | 2015-05-27 | 德州仪器公司 | Projector with optical conversion media pumped by low etendue sourCE |
| TW201525602A (en) * | 2013-12-26 | 2015-07-01 | Qisda Corp | Laser projection apparatus |
| US20150338061A1 (en) * | 2014-05-26 | 2015-11-26 | Delta Electronics, Inc. | Illumination system and projection apparatus with same |
-
2017
- 2017-06-19 TW TW106120304A patent/TWI614562B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656355A (en) * | 2013-11-25 | 2015-05-27 | 德州仪器公司 | Projector with optical conversion media pumped by low etendue sourCE |
| TW201525602A (en) * | 2013-12-26 | 2015-07-01 | Qisda Corp | Laser projection apparatus |
| US20150338061A1 (en) * | 2014-05-26 | 2015-11-26 | Delta Electronics, Inc. | Illumination system and projection apparatus with same |
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| Publication number | Publication date |
|---|---|
| TW201905572A (en) | 2019-02-01 |
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