TW201704839A - Light combining control system - Google Patents
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- TW201704839A TW201704839A TW105121337A TW105121337A TW201704839A TW 201704839 A TW201704839 A TW 201704839A TW 105121337 A TW105121337 A TW 105121337A TW 105121337 A TW105121337 A TW 105121337A TW 201704839 A TW201704839 A TW 201704839A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
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Abstract
Description
本發明係關於光學技術領域,特別是涉及一種投影顯示領域。The present invention relates to the field of optical technology, and in particular to the field of projection display.
目前,空間光調製器在投影顯示領域獲得廣泛應用,其中,數位微鏡元件(DMD,Digital Micromirror Device)因其響應速度快,且可以用時序切換的基色光來實現彩色投影顯示的特點,使得各大廠商對單片式DMD投影系統進行了大量的研究。At present, the spatial light modulator has been widely used in the field of projection display. Among them, the digital micromirror device (DMD) has a fast response speed and can realize the color projection display by using the time-switched primary color light. Major manufacturers have conducted extensive research on monolithic DMD projection systems.
進一步地,單片式DMD投影系統研究的一個重要課題就是投影儀的光源,美國專利US7547114B2提供了一種半導體激光器激發色輪上不同螢光粉色段以形成不同基色光的方法,該方法具有光效高,光學擴展量小的優勢,因此發展迅速,成爲投影儀光源的理想選擇。在現有的激光激發螢光粉光源中,由於産生紅光的紅光螢光粉或者橙光螢光粉激發效率較低,同時爲了更好的顯示效果還需配合相應的濾光片以濾除紅光中的短波長光使得紅光更純,如此往往導致最終得到的紅光效率很低。換句話說,對於系統而言,紅光亮度在總體亮度中所占比例較低,即Red content較低,進而造成色坐標與色域標準比如REC. 709(ITU-R Recommendation BT.709)或者DCI(數位電影聯盟,Digital Cinema Initiatives,DCI)存在差距。因此,紅光亮度在總體亮度中所占比例較低是一個急需解决的問題。Further, an important subject of monolithic DMD projection system research is the light source of the projector. U.S. Patent No. 7,547,114 B2 provides a method for a semiconductor laser to excite different fluorescent pink segments on a color wheel to form different primary colors of light. High, low optical expansion, and therefore rapid development, ideal for projector light source. In the existing laser-excited phosphor powder source, the red light fluorescent powder or the orange light fluorescent powder which generates red light has low excitation efficiency, and at the same time, in order to better display the effect, it is necessary to filter with the corresponding filter. The short-wavelength light in red light makes the red light more pure, which often results in a red light efficiency that is ultimately low. In other words, for the system, the red light brightness has a lower proportion of the overall brightness, ie the Red content is lower, which in turn causes color coordinates and color gamut standards such as REC. 709 (ITU-R Recommendation BT.709) or There is a gap between DCI (Digital Cinema Initiatives, DCI). Therefore, the low proportion of red light brightness in overall brightness is an urgent problem to be solved.
針對上述問題,本申請提供一種合光控制系統並將其應用於投影機,本申請提供一種合光控制系統,包括: 一光源模組,用於射出待補償基色光和基色補償光,所述基色補償光用於與所述待補償基色光合成第一基色光; 一控制器,用於接收至少第一路信號和第二路信號,所述第一路信號爲包括第一基色光信號的圖像信號,所述第二路信號爲包括所述第一基色光信號的圖像信號;以及 一空間光調製器,與所述控制器電連接,用於根據所述控制器接收的第一路信號中的所述第一基色光信號對所述待補償基色光進行調製,並根據所述控制器接收的第二路信號中的所述第一基色光信號對所述基色補償光進行調製。In view of the above problems, the present application provides a light combining control system and applies it to a projector. The present application provides a light combining control system, including: a light source module for emitting primary light to be compensated and primary color compensation light, The primary color compensation light is used to synthesize the first primary color light with the base color to be compensated; a controller for receiving at least the first path signal and the second path signal, wherein the first path signal is a picture including the first primary color optical signal An image signal, the second signal being an image signal including the first primary color optical signal; and a spatial light modulator electrically coupled to the controller for receiving the first path according to the controller The first primary color optical signal in the signal modulates the primary color light to be compensated, and modulates the primary color compensation light according to the first primary color optical signal in the second path signal received by the controller.
本申請的有益效果主要在於:依上述實施的合光控制系統並將其應用之投影機,其控制器接收兩路信號,光調製器根據這兩路信號中的第一基色光信號分別對待補償基色光和基色補償光進行調製,實現了合成亮度和顔色合適的第一基色光。The beneficial effects of the present application are mainly as follows: according to the above-mentioned combined light control system and the projector to which it is applied, the controller receives two signals, and the optical modulator separately compensates according to the first primary color optical signals of the two signals. The primary color light and the primary color compensation light are modulated to achieve a first primary color light that combines brightness and color.
下面將結合本發明實施例中的附圖,對本發明實施例中的技術方案進行清楚、完整地描述,顯然,所描述的實施例僅僅是本發明一部分實施例,而不是全部的實施例。基於本發明中的實施例,本領域普通技術人員在沒有做出創造性勞動前提下所獲得的所有其他實施例,都屬於本發明保護的範圍。 實施例一The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. Embodiment 1
請參照圖1,本實施例公開了一種合光控制系統(以下簡稱控制系統),其包括光源模組、空間光調製器和控制器411。下面分別說明。Referring to FIG. 1 , the embodiment discloses a light combining control system (hereinafter referred to as a control system), which includes a light source module, a spatial light modulator, and a controller 411 . The following are explained separately.
光源模組用於射出待補償基色光和基色補償光,基色補償光用於與待補償基色光合成第一基色光。在某些實施例當中,光源模組可以包括發光組件和波長轉換器405。並且,發光組件可以包括用於發射激發光的激發光源401和用於發射補償光的補償光源402。The light source module is configured to emit the primary color light and the primary color compensation light to be compensated, and the primary color compensation light is used to synthesize the first primary color light with the primary color light to be compensated. In some embodiments, the light source module can include a lighting assembly and a wavelength converter 405. Also, the light emitting assembly may include an excitation light source 401 for emitting excitation light and a compensation light source 402 for emitting compensation light.
其中,激發光源401可以採用藍光發光二極管、紫外發光二極管或其陣列,也可以採用藍光激光二極管、紫外激光二極管或其陣列,於本實施例中激發光源401採用445nm藍光激光二極管。此外,補償光源402可以是發光二極管也可以是激光二極管,在本實施例之中,爲了解决波長轉換器405射出的時序光中紅光比例過低的問題,補償光源402可以採用638nm紅光激光二極管。The excitation light source 401 can be a blue light emitting diode, an ultraviolet light emitting diode or an array thereof, or a blue laser diode, an ultraviolet laser diode or an array thereof. In the embodiment, the excitation light source 401 is a 445 nm blue laser diode. In addition, the compensation light source 402 may be a light emitting diode or a laser diode. In the embodiment, in order to solve the problem that the proportion of red light in the time series light emitted by the wavelength converter 405 is too low, the compensation light source 402 may use a 638 nm red laser. diode.
並且,波長轉換器405包括基色光分段和至少一補償光分段。基色光分段在被激發光照射時發出待補償基色光,補償光分段在被補償光照射時發出補償基色光,補償基色光用於與待補償基色光合成第一基色光。波長轉換器405位於激發光和補償光的光路上,並相對於照射到波長轉換器405上的光做周期性運動,使基色光分段和補償光分段按照設定的時序依次被移動並被光所照射。Also, the wavelength converter 405 includes a primary color light segment and at least one compensation light segment. The primary color light segment emits primary light to be compensated when illuminated by the excitation light, and the compensation light segment emits complementary primary light when illuminated by the compensated light, and the compensated primary light is used to synthesize the first primary light with the primary color to be compensated. The wavelength converter 405 is located on the optical path of the excitation light and the compensation light, and performs periodic motion with respect to the light irradiated onto the wavelength converter 405, so that the primary color light segmentation and the compensation light segment are sequentially moved according to the set timing and are Illuminated by light.
在一個具體的實施例之中,請參照圖2,波長轉換器可以爲一四段式色輪,色輪可以爲透射式也可以爲反射式。此色輪可以包括螢光粉輪和對應的濾光片輪。螢光粉輪包括綠色螢光粉段405G、藍色散色體段405B、橙色螢光粉段405O和散色體段405S,其中綠色螢光粉段405G、藍色散色體段405B、橙色螢光粉段405O構成基色光分段,綠色螢光粉段405G被藍激光照射時産生綠螢光,藍色散色體段405B被藍激光照射時産生藍光,橙色螢光粉段405O被藍激光照射時産生橙螢光,綠螢光、藍光、橙螢光分別爲上述的第二基色光、第三基色光、待補償基色光;散色體段405S爲補償光分段,其被紅激光照射時産生紅光,爲補償基色光。In a specific embodiment, referring to FIG. 2, the wavelength converter may be a four-segment color wheel, and the color wheel may be transmissive or reflective. This color wheel can include a phosphor powder wheel and a corresponding filter wheel. The fluorescent powder wheel comprises a green fluorescent powder section 405G, a blue discolored body section 405B, an orange fluorescent powder section 405O and a discolored body section 405S, wherein the green fluorescent powder section 405G, the blue discolored body section 405B, and the orange fluorescent light The powder segment 405O constitutes a primary color light segment, the green phosphor powder segment 405G generates green fluorescence when illuminated by a blue laser, the blue dispersion segment 405B generates blue light when illuminated by a blue laser, and the orange fluorescent powder segment 405O is illuminated by a blue laser. The orange fluorescent light, the green fluorescent light, the blue light, and the orange fluorescent light are respectively the second primary color light, the third primary color light, and the base light to be compensated; the dispersing body segment 405S is a compensation light segment, and is irradiated by the red laser. Red light is generated to compensate for the primary light.
控制器411分別與激發光源401、補償光源402電連接,在上述的基色光分段被光照射時,控制激發光源401開啟和補償光源402關閉,在上述補償光分段被光照射時,控制激發光源401關閉和補償光源402開啟,從而波長轉換器405産生時序的紅光、橙光、綠光和藍光,爲了便於敘述,下面以紅光R、橙光O、綠光G和藍光B之英文符號分別指代其所對應之光線。The controller 411 is electrically connected to the excitation light source 401 and the compensation light source 402, respectively, and controls the excitation light source 401 to be turned on and the compensation light source 402 to be turned off when the primary color light segment is illuminated by light, and is controlled when the compensation light segment is illuminated by light. The excitation light source 401 is turned off and the compensation light source 402 is turned on, so that the wavelength converter 405 generates time-series red, orange, green, and blue light. For convenience of description, the following are red light R, orange light O, green light G, and blue light B. The English symbols refer to the light they correspond to.
控制器411除了與激發光源401、補償光源402電連接,以控制激發光源401和補償光源402的開啟與關閉,控制器411還與空間光調製器電連接,用來控制空間光調製器對於波長轉換器405射出的由第二基色光、第三基色光、待補償基色光、補償基色光組成的時序光的成像調製。The controller 411 is electrically connected to the excitation light source 401 and the compensation light source 402 to control the opening and closing of the excitation light source 401 and the compensation light source 402. The controller 411 is also electrically connected to the spatial light modulator for controlling the spatial light modulator for wavelength. The imaging modulation of the time-series light composed of the second primary color light, the third primary color light, the primary color light to be compensated, and the compensated primary color light emitted by the converter 405.
具體地,控制器411接收兩路信號,第一路信號爲由第一基色光信號、第二基色光信號和第三基色光信號組成的圖像信號,第二路信號爲包括上述第一基色光信號的圖像信號;控制器411控制空間光調製器根據第二基色光信號對波長轉換器405射出的第二基色光進行調製以成像出相應的第二基色光圖像,根據第三基色光信號對波長轉換器405射出的第三基色光進行調製以成像出相應的第三基色光圖像,根據第一基色光信號對波長轉換器405射出的待補償基色光進行調製以成像出相應的待補償基色光圖像,以及根據第一基色光信號對波長轉換器405射出的補償基色光進行調製以成像出相應的補償基色光圖像。Specifically, the controller 411 receives two signals, where the first path signal is an image signal composed of a first primary color optical signal, a second primary color optical signal, and a third primary color optical signal, and the second signal includes the first primary color. An image signal of the optical signal; the controller 411 controls the spatial light modulator to modulate the second primary color light emitted by the wavelength converter 405 according to the second primary color optical signal to form a corresponding second primary color light image, according to the third primary color The optical signal modulates the third primary color light emitted by the wavelength converter 405 to form a corresponding third primary color light image, and modulates the primary color light to be compensated by the wavelength converter 405 according to the first primary color optical signal to image the corresponding The base color light image to be compensated, and the compensated primary color light emitted from the wavelength converter 405 according to the first primary color light signal to modulate a corresponding compensated primary color light image.
在一個具體的實施例中,第二基色光、第三基色光、第一基色光、待補償基色光、補償基色光可以分別爲綠光、藍光、紅光、橙光、紅光。因此,控制器411接收兩路獨立的信號,第一路爲RGB圖像信號,第二路爲與第一路中相同的R信號,控制器411相應地輸出時序的RRGB給空間光調製器,以控制空間光調製器分別對波長轉換器405射出的時序的ROGB進行調製以成像,其中空間光調製器對波長轉換器405射出的ROGB中的RO的調製均是根據控制器411輸入及輸出的R信號。空間光調製器可以爲數位微鏡元件(DMD,Digital Micromirror Device)。In a specific embodiment, the second primary color light, the third primary color light, the first primary color light, the primary color light to be compensated, and the compensated primary color light may be green light, blue light, red light, orange light, or red light, respectively. Therefore, the controller 411 receives two independent signals, the first path is an RGB image signal, the second path is the same R signal as in the first path, and the controller 411 correspondingly outputs the timed RRGB to the spatial light modulator. The ROGB of the timing of the wavelength converter 405 is separately modulated by the control spatial light modulator to be imaged, wherein the modulation of the RO in the ROGB emitted by the spatial light modulator to the wavelength converter 405 is based on the input and output of the controller 411. R signal. The spatial light modulator can be a Digital Micromirror Device (DMD).
下面再以一個實際的例子來進一步說明。The following is further illustrated by a practical example.
請返回參考圖1,控制系統包括激發光源401、補償光源402、波長轉換器405、空間光調製器和控制器411,爲了更好地配合工作,控制系統還可以包括二向色鏡403、第一收集透鏡404、第二收集透鏡406、方棒407、中繼系統408、TIR稜鏡409、投影鏡頭412。Referring back to FIG. 1, the control system includes an excitation light source 401, a compensation light source 402, a wavelength converter 405, a spatial light modulator, and a controller 411. For better cooperation, the control system may further include a dichroic mirror 403, A collecting lens 404, a second collecting lens 406, a square bar 407, a relay system 408, a TIR 409, and a projection lens 412.
激發光源401爲445nm藍光激光二極管,補償光源402爲638nm紅光激光二極管,激發光源401發出的藍激光與補償光源402發出的紅激光在二向色鏡403處合光,透射藍光,反射紅光;合光後的光束經第一收集透鏡404聚焦到波長轉換器405上,波長轉換器405可以爲一四段式色輪,如上所述,請參照圖2,其包括綠色螢光粉段405G、藍色散色體段405B、橙色螢光粉段405O和散色體段405S,綠色螢光粉段405G、藍色散色體段405B、橙色螢光粉段405O被光照射時,控制器411控制激發光源401開啟和補償光源402關閉,從而橙色螢光粉段405O、綠色螢光粉段405G、藍色散色體段405B被藍激光照射分別産生橙螢光,綠螢光、藍光,在散色體段405S被光照射時,控制器411控制激發光源401關閉和補償光源402開啟,從而散色體段405S被紅激光照射産生紅光。The excitation light source 401 is a 445 nm blue laser diode, the compensation light source 402 is a 638 nm red laser diode, and the blue laser light emitted from the excitation light source 401 and the red laser light emitted from the compensation light source 402 are combined at the dichroic mirror 403 to transmit blue light and reflect red light. The combined light beam is focused by a first collecting lens 404 onto a wavelength converter 405. The wavelength converter 405 can be a four-stage color wheel. As described above, please refer to FIG. 2, which includes a green phosphor segment 405G. The blue color body segment 405B, the orange phosphor powder segment 405O, and the color body segment 405S, the green phosphor powder segment 405G, the blue color toner segment 405B, and the orange phosphor powder segment 405O are illuminated by light, and the controller 411 controls The excitation light source 401 is turned on and the compensation light source 402 is turned off, so that the orange fluorescent powder segment 405O, the green fluorescent powder segment 405G, and the blue discolored toner segment 405B are respectively illuminated by the blue laser to generate orange fluorescent light, green fluorescent light, blue light, and scattered color. When the body segment 405S is illuminated by light, the controller 411 controls the excitation light source 401 to turn off and compensates for the light source 402 to be turned on, so that the color body segment 405S is irradiated with red laser light to generate red light.
波長轉換器405射出的時序光ROGB經第二收集透鏡406後進入方棒407,經過方棒407的勻光後經中繼系統408,經中繼系統408的對光束進行整形後到達TIR稜鏡409處,反射後到達DMD410,在控制器411的控制下,DMD410對入射的時序光ROGB進行調製,射出後透射TIR稜鏡409,最終經投影鏡頭412成像出R圖像、O圖像、G圖像和B圖像。The time-series light ROGB emitted by the wavelength converter 405 enters the square bar 407 via the second collecting lens 406, is homogenized by the square bar 407, passes through the relay system 408, and is shaped by the relay system 408 to reach the TIR. At 409, after reflection, the DMD 410 is reached. Under the control of the controller 411, the DMD 410 modulates the incident time-series light ROGB, transmits the TIR 409 after the emission, and finally images the R image, the O image, and the G through the projection lens 412. Image and B image.
控制器411控制DMD410的具體過程,請參照圖3,控制器411具有兩個輸入端,可以輸入兩個獨立的圖像信號。具體地,控制器411的第一路與DVI 1相接,輸入R.G.B圖像信號,第二路與DVI 2相接,輸入與DVI 1中相同的R圖像信號,控制器411接收這兩路輸入後,輸出時序RRGB信號給DMD410,DMD410接收的RRGB信號與波長轉換器405射出的時序光ROGB相對應,R信號、R信號、G信號、B信號分別用於對波長轉換器405射出的光R、O、G、B進行調製以成像出R圖像、O圖像、G圖像、B圖像。可以看到,波長轉換器405射出的光R、O均由R信號控制。控制器411對激發光源401和補償光源402開閉的控制,以及對於DMD410對波長轉換器405射出的時序光ROGB的調製的控制,見圖4。The controller 411 controls the specific process of the DMD 410. Referring to FIG. 3, the controller 411 has two inputs for inputting two independent image signals. Specifically, the first path of the controller 411 is connected to the DVI 1, and the RGB image signal is input, the second channel is connected to the DVI 2, and the same R image signal as in the DVI 1 is input, and the controller 411 receives the two paths. After input, the output timing RRGB signal is output to the DMD 410, and the RRGB signal received by the DMD 410 corresponds to the timing light ROGB emitted by the wavelength converter 405, and the R signal, the R signal, the G signal, and the B signal are respectively used for the light emitted from the wavelength converter 405. R, O, G, and B are modulated to form an R image, an O image, a G image, and a B image. It can be seen that the light R, O emitted by the wavelength converter 405 is controlled by the R signal. Control of the controller 411 to open and close the excitation light source 401 and the compensation light source 402, and control of the modulation of the timing light ROGB emitted by the DMD 410 to the wavelength converter 405 is shown in FIG.
本實施例通過雙路輸入信號的輸入和配合,使得DMD410接收控制器411輸出的RRGB控制信號,進而DMD410根據RRGB控制信號對波長轉換器405射出的ROGB光進行調製,對應輸出R圖像、O圖像、G圖像、B圖像,R圖像和O圖像的配合使得紅光的光效提升,最終形成的彩色圖像效果更好。In this embodiment, the input and cooperation of the dual input signals enable the DMD 410 to receive the RRGB control signal output by the controller 411, and then the DMD 410 modulates the ROGB light emitted by the wavelength converter 405 according to the RRGB control signal, corresponding to the output R image, O. The combination of image, G image, B image, R image and O image makes the light effect of red light improve, and the final color image is better.
與傳統的投影機相比,本申請控制器411輸入的信號由前端的DVI 1和DVI 2産生,因此主要工作集中在前端的圖像信號處理上,而DMD410部分無需進行更改,因此本申請的合光控制系統及投影機具有很大的靈活性和兼容性。本實施的補償光源402發出的爲紅激光,其與波長轉換器405射出的橙螢光合光,提高了紅光的光效;當然,也補償光源402也可以選用綠激光,這時其與波長轉換器405射出的綠螢光合光,以提高綠光的光效。 實施例二Compared with the conventional projector, the signal input by the controller 411 of the present application is generated by the front end DVI 1 and DVI 2, so the main work is concentrated on the image signal processing of the front end, and the DMD 410 part does not need to be changed, so the present application The light control system and projector have great flexibility and compatibility. The compensation light source 402 of the present embodiment emits a red laser light, which combines with the orange fluorescence emitted by the wavelength converter 405 to improve the light efficiency of the red light; of course, the compensation light source 402 can also select a green laser, and then the wavelength conversion The green fluorescent light emitted by the device 405 is combined to increase the luminous efficacy of the green light. Embodiment 2
請參考圖5,本實施例提出了一種合光控制系統,其與實施例一不同之處在於,實施例一的波長轉換器405爲四段式,而本實施例的波長轉換器405爲六段式,包括綠色螢光粉段405G、藍色散色體段405B、橙色螢光粉段405O、以及三段散色體段405S,其中,綠色螢光粉段405G、藍色散色體段405B和橙色螢光粉段405O構成基色光分段,三段散色體段405S構成補償光分段。Referring to FIG. 5, the present embodiment provides a light combining control system, which is different from the first embodiment in that the wavelength converter 405 of the first embodiment is a four-segment type, and the wavelength converter 405 of the embodiment is six. The segment type includes a green phosphor segment 405G, a blue dispersoid segment 405B, an orange phosphor segment 405O, and a three-segment color segment 405S, wherein the green phosphor segment 405G, the blue dispersoid segment 405B, and The orange phosphor segment 405O constitutes a primary color segment, and the three segment dispersion segment 405S constitutes a compensating beam segment.
並且,在一個較優的實施例中,綠色螢光粉段405G、藍色散色體段405B和橙色螢光粉段405O這三段的兩兩之間都設置有一段散色體段405S,因此,這三段散色體段405S可以理解爲一個三段式波長轉換器405,此三段式波長轉換器405的包括綠色螢光粉段405G、藍色散色體段405B橙色螢光粉段405O,其輻條段(spoke 段)爲散色體段405S,控制時序上,在輻條段被光照射時,控制器411控制激發光源401關閉和補償光源402開啟,這樣就無需進行色彩亮度的調節(BC,Brilliant Color)就能提高色彩亮度,並且大大地有利於灰階的平滑。Moreover, in a preferred embodiment, a green body segment 405G is disposed between the two segments of the green phosphor segment 405G, the blue dispersoid segment 405B, and the orange phosphor segment 405O. The three-segment color body segment 405S can be understood as a three-segment wavelength converter 405. The three-segment wavelength converter 405 includes a green phosphor powder segment 405G, and a blue color body segment 405B orange phosphor powder segment 405O. The spoke segment is a dispersive segment 405S. At the control timing, when the spoke segment is illuminated by light, the controller 411 controls the excitation light source 401 to be turned off and the compensation light source 402 to be turned on, so that the color brightness adjustment is not required ( BC, Brilliant Color) can increase the brightness of the color and greatly facilitate the smoothing of the gray scale.
具體工作時,請參照圖6。控制器411仍具有兩個輸入端,第一路輸入R.G.B圖像信號,第二路輸入三個與第一路相同的R信號,控制器411接收這兩路輸入後,輸出時序RRRGRB信號給DMD410,DMD410接收的RRRGRB信號與波長轉換器405射出的時序光RORGRB相對應,R信號、R信號、R信號、G信號、R信號、B信號分別用於對波長轉換器405射出的光R、O、R、G、R、B進行調製以成像出R圖像、O圖像、R圖像、G圖像、R圖像、B圖像,這裏的三個R圖像都與O圖像都利用人眼的積分效應進行視覺上的疊加,即DMD410射出時序的RORGRB中,三段R都用於和O進行時序合光;控制激發光源401、補償光源402、波長轉換器405和DMD410射出的時序光見圖7。For specific work, please refer to Figure 6. The controller 411 still has two input terminals. The first channel inputs the RGB image signal, the second channel inputs three R signals identical to the first channel, and the controller 411 receives the two inputs and outputs the timing RRRGRB signal to the DMD 410. The RRRGRB signal received by the DMD 410 corresponds to the timing light RORGRB emitted by the wavelength converter 405, and the R signal, the R signal, the R signal, the G signal, the R signal, and the B signal are respectively used for the light R, O emitted from the wavelength converter 405. , R, G, R, B are modulated to image R image, O image, R image, G image, R image, B image, where all three R images and O images are In the RORGRB using the integral effect of the human eye, that is, the RORGRB of the DMD 410 emission timing, the three segments R are used for timing combining with O; controlling the excitation light source 401, the compensation light source 402, the wavelength converter 405, and the DMD 410 The timing light is shown in Figure 7.
以上實施例通過增加補償光源402,使補償光源402發出的激光與波長轉換器405基色光分段射出的螢光進行合光,使得螢光的效率、亮度以及色坐標均得到改善,同時上述激光的散斑也在可以接受的範圍內。爲了實施上述激光與螢光的時序合光,本申請的控制器411接收兩路圖像信號,第一路圖像信號爲三基色圖像信號,第二路圖像信號爲與補償光對應的圖像信號,控制器411根據這兩路圖像信號控制DMD410,無需對圖像信號再進行轉換即可使DMD410對波長轉換器405射出的時序光進行調製,實施了時序合光的控制。 實施例三In the above embodiment, by adding the compensation light source 402, the laser light emitted by the compensation light source 402 is combined with the fluorescent light emitted from the primary light of the wavelength converter 405, so that the efficiency, brightness and color coordinates of the fluorescent light are improved, and the laser light is improved. The speckle is also within acceptable limits. In order to perform the above-mentioned laser and fluorescence timing combination, the controller 411 of the present application receives two image signals, the first image signal is a three primary color image signal, and the second image signal is corresponding to the compensation light. For the image signal, the controller 411 controls the DMD 410 based on the two image signals, so that the DMD 410 can modulate the timing light emitted from the wavelength converter 405 without performing conversion of the image signal, and performs timing combining control. Embodiment 3
在另一些實施例中,待補償基色光和基色補償光可以不是時序射出而實現合光,而是同時射出而實現合光,以下具體說明。In other embodiments, the primary color light and the primary color compensation light to be compensated may be combined without being emitted at a time series, but simultaneously combined to achieve light combining, which will be specifically described below.
本實施例中,如圖8所示,控制系統包括光源模組、空間光調製器和控制器511,下面具體說明。In this embodiment, as shown in FIG. 8, the control system includes a light source module, a spatial light modulator, and a controller 511, which are specifically described below.
光源模組可以包括發光組件和波長轉換器505。在一具體實施例中,發光組件可以包括用於發射激發光的激發光源501和用於發射補償光的補償光源502,激發光源501可以採用藍光發光二極管,補償光源502可以採用紅光激光二極管。波長轉換器505位於激發光和補償光的光路上,並相對於照射到波長轉換器505上的光做周期性運動,且在激發光源501和補償光源502的照射下同時射出待補償基色光和基色補償光。The light source module can include a light emitting assembly and a wavelength converter 505. In a specific embodiment, the illumination assembly can include an excitation source 501 for emitting excitation light and a compensation source 502 for emitting compensation light. The excitation source 501 can employ a blue LED, and the compensation source 502 can employ a red laser diode. The wavelength converter 505 is located on the optical path of the excitation light and the compensation light, and periodically moves with respect to the light irradiated onto the wavelength converter 505, and simultaneously emits the primary color light to be compensated under the illumination of the excitation light source 501 and the compensation light source 502. The primary color compensates for light.
並且,在一較優的實施例中,波長轉換器505包括基色光分段,基色光分段包括第一基色光分段,第一基色光分段在激發光和補償光的同時照射下同時射出待補償基色光和基色補償光。在一具體實施例中,如圖9所示,波長轉換器505爲二段式色輪,此色輪可以包括螢光粉輪和對應的濾光片輪。螢光粉輪包括黃色螢光粉段505Y、散色體段505S,在一較優的實施例中,散色體段505S的面積爲黃色螢光粉段505Y的兩倍。Also, in a preferred embodiment, the wavelength converter 505 includes a primary color light segment, the primary color light segment includes a first primary color light segment, and the first primary color light segment is simultaneously illuminated while the excitation and compensation light are simultaneously illuminated. The base light to be compensated and the primary color compensation light are emitted. In one embodiment, as shown in FIG. 9, the wavelength converter 505 is a two-stage color wheel that may include a phosphor powder wheel and a corresponding filter wheel. The phosphor powder wheel includes a yellow phosphor section 505Y and a discolored body section 505S. In a preferred embodiment, the area of the discolored body section 505S is twice the area of the yellow phosphor section 505Y.
控制器511用於接收至少第一路信號和第二路信號,其中,第一路信號爲包括第一基色光信號的圖像信號,第二路信號爲包括所述第一基色光信號的圖像信號。在一具體實施例中,控制器511分別與上述激發光源501和補償光源502電連接,且在波長轉換器505的第一基色光分段位於發光組件發出的光的傳輸路徑中時,控制激發光源501和補償光源502均開啟。The controller 511 is configured to receive at least a first path signal and a second path signal, where the first path signal is an image signal including a first primary color optical signal, and the second path signal is a picture including the first primary color optical signal Like a signal. In a specific embodiment, the controller 511 is electrically connected to the excitation light source 501 and the compensation light source 502, respectively, and controls the excitation when the first primary color light segment of the wavelength converter 505 is located in the transmission path of the light emitted by the illumination assembly. Both the light source 501 and the compensation light source 502 are turned on.
空間光調製器與控制器511電連接,用於根據控制器511接收的第一路信號中的第一基色光信號對所述待補償基色光進行調製,並根據所述控制器接收的所述第二路信號中的第一基色光信號對基色補償光進行調製。在一具體實施例中,空間光調製器可以包括第一空間光調製器510a和第二空間光調製器510b,第一空間光調製器510a和第二空間光調製器510b可以爲DMD。The spatial light modulator is electrically connected to the controller 511, configured to modulate the to-be-compensated primary color light according to a first primary color optical signal in the first path signal received by the controller 511, and according to the controller received by the controller The first primary color light signal in the second signal modulates the primary color compensation light. In a specific embodiment, the spatial light modulator can include a first spatial light modulator 510a and a second spatial light modulator 510b, and the first spatial light modulator 510a and the second spatial light modulator 510b can be DMDs.
下面具體說明本實施例的工作原理。The working principle of this embodiment will be specifically described below.
在波長轉換器505的黃色螢光粉段505Y位於激發光和補償光的光路上時,激發光源501打開,補償光源502關閉,黃色螢光粉段505Y受激射出黃螢光,黃螢光經分光導光器509分光,分成紅螢光與綠螢光,其中綠螢光射出到第一空間光調製器510a中,紅螢光射出到第二空間光調製器510b中。When the yellow fluorescent powder segment 505Y of the wavelength converter 505 is located on the optical path of the excitation light and the compensation light, the excitation light source 501 is turned on, the compensation light source 502 is turned off, the yellow fluorescent powder segment 505Y is excited to emit yellow fluorescent light, and the yellow fluorescent light is transmitted through the spectral light guiding device. The 509 split light is divided into red fluorescent light and green fluorescent light, wherein the green fluorescent light is emitted into the first spatial light modulator 510a, and the red fluorescent light is emitted into the second spatial light modulator 510b.
此外,在波長轉換器 505的散色體段505S位於激發光和補償光的光路上時,激發光源501和補償光源502同時打開,兩者射出的光在二向色鏡503處合光,並經由第一收集透鏡504透射藍光和反射紅光;藍光和紅光照射在散色體段505S上,散色體段505S射出藍光和紅光,再經過第二收集透鏡506、方棒507、中繼系統508以及分光導光器509,藍光入射到第一空間光調製器510a中,紅光射出到第二空間光調製器510b中。In addition, when the color body segment 505S of the wavelength converter 505 is located on the optical path of the excitation light and the compensation light, the excitation light source 501 and the compensation light source 502 are simultaneously turned on, and the light emitted by the two is combined at the dichroic mirror 503, and The blue light and the red light are transmitted through the first collecting lens 504; the blue light and the red light are irradiated on the color body segment 505S, and the color body segment 505S emits blue light and red light, and then passes through the second collecting lens 506, the square bar 507, and the middle. Following the system 508 and the split light director 509, blue light is incident into the first spatial light modulator 510a and red light is emitted into the second spatial light modulator 510b.
因此第一空間光調製器510a接收時序的綠螢光、藍光,第二空間光調製器510b接收時序的紅螢光、紅光,在控制器511的控制下,第一空間光調製器510a和二空間光調製器510b分別對入射的時序光進行調製,以分別在投影鏡頭512中成像出相應光的圖像。Therefore, the first spatial light modulator 510a receives the timed green fluorescent light, blue light, and the second spatial light modulator 510b receives the timed red fluorescent light, red light, under the control of the controller 511, the first spatial light modulator 510a and The two spatial light modulators 510b respectively modulate the incident time-series light to image an image of the corresponding light in the projection lens 512, respectively.
控制器511控制第一空間光調製器510a和二空間光調製器510b的具體過程,請參照圖10,控制器511輸出B信號、G信號給第一空間光調製器510a,輸出R信號給二空間光調製器510b。控制器511對激發光源501和補償光源502開閉的控制,以及第一空間光調製器510a和二空間光調製器510b對波長轉換器405射出的時序光的調製的控制,見圖11。The controller 511 controls the specific processes of the first spatial light modulator 510a and the two spatial light modulators 510b. Referring to FIG. 10, the controller 511 outputs a B signal, a G signal to the first spatial light modulator 510a, and an output R signal to the second. Spatial light modulator 510b. Control of the opening and closing of the excitation light source 501 and the compensation light source 502 by the controller 511, and the control of the modulation of the time-series light emitted from the wavelength converter 405 by the first spatial light modulator 510a and the two spatial light modulators 510b are shown in FIG.
需要特別說明的是,本實施例中補償光源502是設置於波長轉換器505之前,激發光源501和補償光源502分別射出的激發光和補償光是在波長轉換器505之前進行合光,在另外的一些實施例中,補償光源502可以設置在波長轉換器505之後,激發光源501照射到散色體段505S後射出的光可以和補償光源502射出的光在波長轉換器505之後進行合光。It should be noted that, in this embodiment, the compensation light source 502 is disposed before the wavelength converter 505, and the excitation light and the compensation light emitted by the excitation light source 501 and the compensation light source 502 are combined before the wavelength converter 505, in addition, In some embodiments, the compensation light source 502 may be disposed after the wavelength converter 505, and the light emitted by the excitation light source 501 after being irradiated to the color body segment 505S may be combined with the light emitted by the compensation light source 502 after the wavelength converter 505.
以上內容是結合具體的實施方式對本申請所作的進一步詳細說明,不能認定本申請的具體實施只侷限於這些說明。對於本申請所屬技術領域的普通技術人員來說,在不脫離本申請發明構思的前提下,還可以做出若干簡單推演或替換。The above content is a further detailed description of the present application in conjunction with the specific embodiments, and the specific implementation of the present application is not limited to the description. For those skilled in the art to which the present invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept.
<本發明>
401‧‧‧激發光源
402‧‧‧補償光源
403‧‧‧二向色鏡
404‧‧‧第一收集透鏡
405‧‧‧波長轉換器
406‧‧‧第二收集透鏡
407‧‧‧方棒
408‧‧‧中繼系統
409‧‧‧TIR稜鏡
410‧‧‧DMD
411‧‧‧控制器
412‧‧‧投影鏡頭
405B‧‧‧藍色散色體段
405G‧‧‧綠色螢光粉段
405S‧‧‧散色體段
405O‧‧‧橙色螢光粉段
R‧‧‧紅光
G‧‧‧綠光
B‧‧‧藍光
O‧‧‧橙光
501‧‧‧激發光源
502‧‧‧補償光源
503‧‧‧二向色鏡
504‧‧‧第一收集透鏡
505‧‧‧波長轉換器
506‧‧‧第二收集透鏡
507‧‧‧方棒
508‧‧‧中繼系統
509‧‧‧分光導光器
510a‧‧‧第一空間光調製器
510b‧‧‧第二空間光調製器
511‧‧‧控制器
512‧‧‧投影鏡頭
505S‧‧‧散色體段
505Y‧‧‧黃色螢光粉段<present invention>
401‧‧‧Excitation source
402‧‧‧Compensated light source
403‧‧‧ dichroic mirror
404‧‧‧First collection lens
405‧‧‧wavelength converter
406‧‧‧Second collection lens
407‧‧‧ square stick
408‧‧‧Relay system
409‧‧‧TIR稜鏡
410‧‧‧DMD
411‧‧‧ Controller
412‧‧‧Projection lens
405B‧‧‧Blue color body
405G‧‧‧Green Fluorescent Powder Section
405S‧‧‧Discolor body
405O‧‧‧Orange Fluorescent Powder Section
R‧‧‧Red Light
G‧‧‧Green Light
B‧‧‧Blue
O‧‧‧Orange
501‧‧‧Excitation source
502‧‧‧Compensated light source
503‧‧‧ dichroic mirror
504‧‧‧First collection lens
505‧‧‧wavelength converter
506‧‧‧Second collection lens
507‧‧‧ square stick
508‧‧‧Relay system
509‧‧‧Splitter light guide
510a‧‧‧First spatial light modulator
510b‧‧‧Second spatial light modulator
511‧‧‧ Controller
512‧‧‧Projection lens
505S‧‧‧Discolor body
505Y‧‧‧Yellow Fluorescent Powder Section
圖1爲本申請實施例一中控制系統的一種結構示意圖; 圖2爲本申請實施一中波長轉換器的一種結構示意圖; 圖3爲本申請實施一中控制器的一種工作原理圖; 圖4爲本申請實施例一中控制系統的一種時序配合圖; 圖5爲本申請實施二中波長轉換器的一種結構示意圖; 圖6爲本申請實施二中控制器的一種工作原理圖; 圖7爲本申請實施二中控制系統的一種時序配合圖; 圖8爲本申請實施例三中控制系統的一種結構示意圖; 圖9爲本申請實施例三中波長轉換器的一種結構示意圖; 圖10爲本申請實施三中控制器的一種工作原理圖;以及 圖11爲本申請實施三中控制系統的一種時序配合圖。1 is a schematic structural diagram of a control system according to Embodiment 1 of the present application; FIG. 2 is a schematic structural diagram of a wavelength converter according to a first embodiment of the present application; FIG. 3 is a schematic diagram of a working principle of a controller according to Embodiment 1 of the present application; FIG. 5 is a schematic structural diagram of a wavelength converter according to Embodiment 2 of the present application; FIG. 6 is a schematic diagram of a working principle of a controller in Embodiment 2 of the present application; FIG. 8 is a schematic structural diagram of a control system according to Embodiment 3 of the present application; FIG. 9 is a schematic structural diagram of a wavelength converter according to Embodiment 3 of the present application; A working principle diagram of the controller of the third implementation is applied; and FIG. 11 is a timing cooperation diagram of the control system in the third implementation of the present application.
401‧‧‧激發光源 401‧‧‧Excitation source
402‧‧‧補償光源 402‧‧‧Compensated light source
403‧‧‧二向色鏡 403‧‧‧ dichroic mirror
404‧‧‧第一收集透鏡 404‧‧‧First collection lens
405‧‧‧波長轉換器 405‧‧‧wavelength converter
406‧‧‧第二收集透鏡 406‧‧‧Second collection lens
407‧‧‧方棒 407‧‧‧ square stick
408‧‧‧中繼系統 408‧‧‧Relay system
409‧‧‧TIR稜鏡 409‧‧‧TIR稜鏡
410‧‧‧DMD 410‧‧‧DMD
411‧‧‧控制器 411‧‧‧ Controller
412‧‧‧投影鏡頭 412‧‧‧Projection lens
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CN201510427180.6A CN106371272B (en) | 2015-07-20 | 2015-07-20 | The control system of light combination and projector |
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CN106371272A (en) | 2017-02-01 |
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