1241041 14486twf.doc/m 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光源裝置，且特別是有關於一 種具有光檢測器(photo detector)的光源裝置。 【先前技術】 由於發光二極體（Light Emitting Diode，LED)具有 較長的使用壽命以及較低的耗電量等特性，因此發光二極 體的應用正趨於普遍化，例如大型電子看板、紅綠燈及車 燈等。目前的發光二極體產業正朝著高亮度、低光損的目 標邁進，並且可望逐漸應用於高亮度之發光二極體投影光 源’如可應用於數位影像投影裝置(Digital Light Processing projector，DLP projector)、液晶投影裝置(Liquid Crystal Display projector，LCD projector)與其他新型之彩色高亮 度光學投射裝置上。 圖1繪示為習知發光二極體光源裝置的配置示意圖。 請參照圖1，習知之發光二極體光源裝置1〇〇主要係由一 紅光發光二極體晶片102、一綠光發光二極體晶片1〇4、 '一备光發光^一極體晶片106、一電路板110、一基座120 以及一燈罩130所構成，其中紅光發光二極體晶片1〇2、 綠光發光二極體晶片104以及藍光發光二極體晶片106係 配置於電路板110上，並與電路板110電性連接，且電路 板110係配置於基座120上。燈罩130例如是一中空球體， 係配置於基座120上，並將電路板110罩附。此發光二極 體光源裝置100係藉由紅光發光二極體晶片102、綠光發 1241041 14486twf.doc/m 光二極體晶片104以及藍光發光二極體晶片1〇6所發出之 紅光、綠光及藍光於燈罩130内均勻混合為白光後，經由 燈罩130出射。 由於發光二極體晶片常因為生產過程中的誤差，或 是長時間使用後發光效能衰退等種種因素，使得各種顏色 之發光一極體所輸出之光線的發光量(lumjn〇us quantity)會 與設定值之間產生某些程度的偏差。基於上述之原因，經 過混光後所形成的白光亦會與預期有所出入，造成光源裝 置所輸出之光線其性質無法準確地掌控。 【發明内容】 本發明的目的就是在提供一種光源裝置，可以補償 發光元件之（illuminating element)發光量與設定值的偏 差’用以提昇光源之輸出品質。 基於本發明之上述目的及其他目的，本發明提出一 種光源裝置，其包括一混光元件、多個發光元件、至少一 光檢測器以及一光擴散件(diffuser^/其中，混光源件具有 至少一混光腔體，而且混光腔體/之一側為一光出射面。此 外，上述之發光元件與光檢測器係配置於混光腔體内部， 光盘測器係用以檢測發光元件之發光量。則配置 於混光雙體之光出射面。或者，光擴散件可以配置於混光 元件之混光腔體内，且位於發光元件與光出射面之間。 依照本發明之實施例所述之光源裝置，其中混光元 件可為管狀混光元件或板狀混光元件。 依照本發明之實施例所述之光源裝置，其中混光元 1241041 14486twf.doc/m 件之内壁上例如配置有一反射層。 依照本發明之實施例所述光源裝置，其中發光元件 例如係發光二極體。 依照本發明之實施例所述之光源裝置，其中發光元 件所發出之光線例如包括紅光、綠光與藍光或是其他單色 光。 依照本發明之實施例所述之光源裴置，其中光檢測 器例如係光二極體(photo diode)。 依照未發明之實施例所述之光源裝置，例如更包括 一可」饋電路，其電性連接至發光元件與光檢測器。當光檢 測器檢測到發光元件之發光量並獲得檢測結果後，回饋電 路係根據檢測結果而調校發光元件之發光量。 綜上所述，本發哥乃是在光源麗置之混光腔體内設 置光檢測裔，用以檢測發光元件之發光量，並且根據檢測 結果調校發光元件之發光量，進而調控光源裝置之光線 出品質。 、， 為讓本發明之上述和其他目的、特徵和優點能更明 顯易懂，下文特舉較佳實施例，並配合所附圖式，作詳細 說明如下。 、 【實施方式】 〔第一實施例] 圖2繪示本發明第一實施例之光源裝置的剖面示意 圖二請f照圖2，光源裝置200包括-混光元件210、二 光檢測器22G、—域散件230以及多瓣光元件24〇。 1241041 14486twf.doc/m 其中，混光元件210具有一混光腔體212，且混光腔體212 之一側為一光出射面214。混光元件210例如係呈管狀。 光檢測器220以及發光元件240均位於混光腔體212内。 光擴散件230位於發光元件240與光出射面214之間。在 此’光擴散件230例如位於光出射面214處。除此之外， 光檢測器220可為一光二極體。另外，光檢測器220與發 光元件240例如配設於一電路板270上。當然，光檢測器 220之配設位置並不侷限於發光元件24〇旁，也可配設於 混光元件210内之任一角落。 在本實施例中，發光元件240例如包括了紅光、綠 光與藍光發光二極體晶片等三種發光元件，其分別適於發 出紅光、綠光與藍光。發光元件24〇所發出之紅光、綠光 與藍光於混光元件210之混光腔體212内經過多次反射 後，再藉由光擴散件230之擴散而混合成均勻的白光後， 即可由光出射面214出射。 雖然在本實施例中係以適於發出紅光、綠光與藍光 之發光το件240為例，但並非用以侷限發光元件24〇所適 Z出之光線_類，其選擇#視制者之f求做變化。 ，為增加光利用率，光源裝置可更包括一反射層 ’，、例如配置於混光元件210之内壁上。 於灸1與圖情示本實施例之光源裝置的兩種方塊圖。 中二二3 ’光源裝置200可更包括一回饋電路260，其 遠;260係與發光元件240以及光檢測器220電性 連接、參照圖2與圖3，為了避免發光科因為製 1241041 14486twf.doc/m 造的誤差或長時間使用等因素，使得其發光量與設定值有 所偏差，本發明利用_光檢測器22〇以及一回饋電路遍 來調校發光元件240之實際發光量。首先，光檢測器220 舄先^双測^光元件240之發光量。在檢測過程中，光檢測 為220例如每次僅針對一個發光元件24〇進行檢測。換言 之’在檢測過程中例如一次僅點亮一個發光元件24〇。當 然，也可一次檢測多個發光元件24〇之發光量，但同時檢 測之發光元件240係以發出相同色光為佳。 ^假设文檢測之發光元件240為紅光發光二極體，則 光檢測器220檢測到紅光發光二極體之發光量後，檢測結 果會傳送至回饋電路260並與設定值比較，之後回饋電路 260根據比較結果調校紅光發光二極體之發光量使之與設 定值吻合。當受到檢測的紅光發光二極體調校完畢之後， 則進行下一個綠光發光二極體或藍光發光二極體的調校。 請共同參照圖3與圖4，回饋電路260除了可以整合 於光源裝置200内，亦可以另外配設於其他裝置中。換言 之，光源裝置200本身可不需配設回饋電路26〇。舉例而 吕，當光源裝置200裝設於一個車燈内時，可將回饋電路 260整合於車燈中，並將光源裝置2〇〇與車燈之回饋電路 260電性連接。如此，亦可達到檢測並調整發光元件24〇 之發光量的目的。另外，若一個車燈内裝設有多個光源裝 置200時，這些光源裝置2〇〇也可共用一個回饋電路26〇。 圖5與圖6分別繪示本實施例之光源裝置中，另外 兩種光擴散件之配設位置的示意圖。請共同參照圖2、圖 1241041 14486twf.doc/m 外，但位於光出射面214處。基於上述可知，光擴散件23〇 的配置位置可依照設計之考量加以更動。 〔第二實施例〕 5與圖6，光擴散件230的位置除了可以如圖2所緣示斑 光出射面214切齊外，$可以如圖5所纷示位於混光腔體 212的中間部分。或者’如圖6所緣示位於混光元件21〇 圖7繪7F本發明第二實施例之光源裝置的剖面示意 圖，圖8繪示為圖7中板狀混光元件的立體示意圖，而圖 9繪示圖7中A區域之放大圖。請共同參照圖7、圖8斑 圖9，本實施例之光源裝£ 300例如可做為一背光模組了 適於在-液晶顯示器中提供液晶面板所需之面光源。光源 裝置300包括-板狀混光元件31〇、多個光檢測器32〇、 多個光擴散件330以及多個發光元件34〇。 其中，板狀混光元件310具有多個混光腔體312，且 每一個混光腔體312均具有一光出射面314。發光元件34〇 以及光k測器320配置於板狀混光元件之各個混光腔 體312内。光擴散件330位於發光元件34〇與光出射面314 之間。除此之外，光源裝置300更可以包括一反射層35〇， 其配置於混光腔體312之側壁。而光檢測器22〇可包括一 光二極體。發光元件340之類型及其光線之顏色的選擇可 與前一實施例相同。 另外，光源裝置300例如更包括一殼體305，而上述 各構件則裝設於殼體305内。藉此，發光元件340所發出 之光線在離開板狀混光元件31〇後，可於殼體305所保留 1241041 14486twf.doc/m 之混光距離D内進行更進—步的混光，進而提升 置300所提供之面光源的均勻性。 、 圖1〇繪示為本實施例之光源裝置的方塊圖。請參照 圖10 ’光源裝置300可更包括一回饋電路36〇，其中回炉 電2 3,係與發光元* 340以及光檢測器320 t性連接。貝 與f 一實施例相同，藉由光檢測器320及回饋電路36〇， 本貫施例之光源裝置亦可對各個發光元件34〇之發光量做 凋整。當然，回饋電路26〇也可配設在與光源裝置3⑻槔 配使用之其他裝置中。換言之，光源裝置3〇〇本身可不疮 配設回饋電路360。 而 值得一提的是，前述各實施例所提之混光元件的形 狀僅為舉例之用，並非用以限制本發明。 綜上所述，本發明係於光源裝置之混光腔體内部裝 設光檢測器，以對發光元件之發光量進行檢測，同時藉^ 内建或外接之回饋電路而調校發光元件的發光量。 雖然本發明已以較佳實施例揭露如上，然其並非用 以限定本發明，任何熟習此技藝者，在不脫離本發明之精 神和範圍内，當可作些許之更動與潤飾，因此本發明之^ 護範圍當視後附之申請專利範圍所界定者為準。 μ 【圖式簡單說明】 圖1繪示習知發光二極體光源裝置的配置示意圖。 圖2繪示本發明第一實施例之光源裝置的剖面示音 圖 ’、馬 圖3〜4繪示本實施例之光源裝置的兩種方塊圖。 11 1241041 14486twf.doc/m 圖5〜6繪示本實施例之光源裝置中另外兩種光擴散 件之配設位置的示意圖。 圖7繪示本發明第二實施例之光源裝置的剖面示意 圖。 圖8繪示為圖7中板狀混光元件的立體示意圖。 圖9繪示圖7中A區域之放大圖 圖10繪示為本 實施例之光源裝置的方塊圖。 【主要元件符號說明】 100 :發光二極體光源裝置 * 102 :紅光發光二極體晶片 104 :綠光發光二極體晶片 106 :藍光發光二極體晶片 110 :電路板 120 :基座 130 :燈罩 200 :光源裝置 210 :混光元件 _ 212 :混光腔體 214 :光出射面 220 :光檢測器 230 :光擴散件 240 :發光元件 250 :反射層 260 :回饋電路 12 1241041 14486twf.doc/m 270 :電路板 300 :光源裝置 305 :殼體 310 :板狀混光元件 312 :混光腔體 314 :光出射面 320 :光檢測器 330 :光擴散件 340 :發光元件 350 :反射層 360 :回饋電路 D :混光距離 131241041 14486twf.doc / m IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a light source device, and more particularly to a light source device with a photo detector. [Previous technology] Because light emitting diodes (Light Emitting Diodes, LEDs) have a long life and low power consumption, the application of light emitting diodes is becoming more common, such as large electronic signage, Traffic lights and lights. The current light-emitting diode industry is moving towards the goal of high brightness and low light loss, and it is expected to gradually be applied to high-brightness light-emitting diode projection light sources, such as digital light projection projectors (Digital Light Processing projector, DLP projector), Liquid Crystal Display projector (LCD projector) and other new color high-brightness optical projection devices. FIG. 1 is a schematic configuration diagram of a conventional light emitting diode light source device. Please refer to FIG. 1. The conventional light emitting diode light source device 100 is mainly composed of a red light emitting diode chip 102, a green light emitting diode chip 104, and a polarized light emitting diode. The wafer 106, a circuit board 110, a base 120, and a lampshade 130 are composed of a red light emitting diode wafer 102, a green light emitting diode wafer 104, and a blue light emitting diode wafer 106. The circuit board 110 is electrically connected to the circuit board 110, and the circuit board 110 is disposed on the base 120. The lamp cover 130 is, for example, a hollow sphere, which is arranged on the base 120 and covers the circuit board 110. The light-emitting diode light source device 100 is red light emitted from a red light-emitting diode chip 102, a green light-emitting diode 1241041 14486twf.doc / m, and a blue light-emitting diode chip 106. The green light and the blue light are uniformly mixed into white light in the lamp cover 130, and then emitted through the lamp cover 130. Because light emitting diode wafers are often due to errors in the production process or due to various factors such as luminous efficiency degradation after long-term use, the luminous quantity (lumjn0us quantity) of light output by light emitting diodes of various colors will be the same as There is some degree of deviation between the set values. Based on the above reasons, the white light formed after mixing light will also be different from the expected, resulting in the nature of the light output by the light source device cannot be accurately controlled. [Summary of the Invention] The object of the present invention is to provide a light source device that can compensate for the deviation between the illuminating element luminous amount and a set value 'to improve the output quality of the light source. Based on the above and other objects of the present invention, the present invention provides a light source device including a light mixing element, a plurality of light emitting elements, at least one light detector, and a light diffusing element (diffuser ^ / wherein the light source element has at least A mixed light cavity, and one side of the mixed light cavity is a light emitting surface. In addition, the above-mentioned light emitting element and light detector are arranged inside the mixed light cavity, and the optical disc detector is used to detect the light emitting element. The amount of luminescence is arranged on the light exit surface of the mixed light body. Alternatively, the light diffusing member may be disposed in the light mixing cavity of the light mixing element and located between the light emitting element and the light exit surface. An embodiment according to the present invention In the light source device, the light mixing element may be a tube light mixing element or a plate-shaped light mixing element. According to the light source device according to the embodiment of the present invention, the light mixing element 1241041 14486twf.doc / m is on the inner wall of the element, for example A reflective layer is arranged. The light source device according to the embodiment of the present invention, wherein the light emitting element is, for example, a light emitting diode. The light source device according to the embodiment of the present invention, wherein the light emitting element The emitted light includes, for example, red light, green light, blue light, or other monochromatic light. According to the light source device according to the embodiment of the present invention, the light detector is, for example, a photo diode. The light source device described in the embodiment, for example, further includes a feedable circuit that is electrically connected to the light emitting element and the light detector. When the light detector detects the light emission amount of the light emitting element and obtains the detection result, the feedback circuit system According to the detection result, the light-emitting amount of the light-emitting element is adjusted. In summary, Benfa is setting a photo-detector in the mixed light cavity of the light source to detect the light-emitting amount of the light-emitting element, and according to the detection result The luminous quantity of the light-emitting element is adjusted, so as to control the light output quality of the light source device. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below with the accompanying The drawings are described in detail as follows. [Embodiment] [First Example] FIG. 2 is a schematic cross-sectional view of a light source device according to a first embodiment of the present invention. The device 200 includes a light-mixing element 210, two light detectors 22G, a domain scattered part 230, and a multi-lobe light element 24. 1241041 14486twf.doc / m wherein the light-mixing element 210 has a light-mixing cavity 212, and One side of the light cavity 212 is a light emitting surface 214. The light mixing element 210 is, for example, tubular. The photodetector 220 and the light emitting element 240 are both located in the light mixing cavity 212. The light diffusing member 230 is located between the light emitting element 240 and light. The light emitting element 230 is located at, for example, the light emitting surface 214. In addition, the light detector 220 may be a light diode. In addition, the light detector 220 and the light emitting element 240 are disposed, for example. On a circuit board 270. Of course, the arrangement position of the light detector 220 is not limited to the light-emitting element 24o, and may be arranged at any corner in the light-mixing element 210. In this embodiment, the light-emitting element 240 includes, for example, three light-emitting elements such as red, green, and blue light-emitting diode wafers, which are respectively adapted to emit red, green, and blue light. After the red light, green light and blue light emitted from the light emitting element 24 are reflected in the light mixing cavity 212 of the light mixing element 210 for multiple times, and then diffused by the light diffusing member 230 to form a uniform white light, that is, It can be emitted from the light exit surface 214. Although in this embodiment, the light-emitting το member 240 suitable for emitting red light, green light, and blue light is taken as an example, but it is not used to limit the light emitted by the light-emitting element 24, and its type is selected as # 视 制 者F seeks change. In order to increase the light utilization rate, the light source device may further include a reflective layer, for example, disposed on the inner wall of the light mixing element 210. In the moxibustion 1 and the diagram, two block diagrams of the light source device of this embodiment are shown. The 222 3 'light source device 200 may further include a feedback circuit 260, which is far away; 260 is electrically connected to the light-emitting element 240 and the photodetector 220, referring to FIG. 2 and FIG. 3, in order to avoid the light-emitting branch due to the system 1241041 14486twf. doc / m manufacturing errors or long-term use and other factors make its luminous amount deviate from the set value. The present invention uses _photo detector 22 and a feedback circuit to adjust the actual luminous amount of the light-emitting element 240. First, the photodetector 220 first measures the amount of light emitted by the dual light emitting element 240. During the detection, the light detection is 220, for example, only one light-emitting element 24o is detected at a time. In other words, 'e.g., only one light-emitting element 24 is lit at a time during the detection process. Of course, it is also possible to detect the light-emission amount of a plurality of light-emitting elements 240 at a time, but it is preferable that the light-emitting elements 240 detected at the same time emit light of the same color. ^ Assuming that the light-emitting element 240 detected by the text is a red light-emitting diode, after the light detector 220 detects the light-emitting amount of the red light-emitting diode, the detection result is transmitted to the feedback circuit 260 and compared with the set value, and then feedback The circuit 260 adjusts the light emission amount of the red light emitting diode according to the comparison result to make it match the set value. After the detected red light emitting diode is adjusted, the next green light emitting diode or blue light emitting diode is adjusted. Please refer to FIG. 3 and FIG. 4 in common. In addition to being integrated in the light source device 200, the feedback circuit 260 may also be configured in other devices. In other words, the light source device 200 itself does not need to be provided with a feedback circuit 26. For example, when the light source device 200 is installed in a vehicle light, the feedback circuit 260 can be integrated into the vehicle light, and the light source device 200 is electrically connected to the feedback circuit 260 of the vehicle light. In this way, the purpose of detecting and adjusting the light emission amount of the light emitting element 24o can also be achieved. In addition, when a plurality of light source devices 200 are installed in one vehicle lamp, these light source devices 200 can also share one feedback circuit 26. Fig. 5 and Fig. 6 are schematic diagrams showing the arrangement positions of two other types of light diffusing members in the light source device of this embodiment. Please refer to FIG. 2 and FIG. 1241041 outside 14486twf.doc / m, but located at the light exit surface 214. Based on the above, it can be known that the arrangement position of the light diffusing member 23 can be changed according to design considerations. [Second Embodiment] 5 and FIG. 6, except that the position of the light diffusing member 230 can be aligned with the spot light exit surface 214 as shown in FIG. 2, it can be located in the middle of the light mixing cavity 212 as shown in FIG. section. Or 'as shown in FIG. 6 is a schematic cross-sectional view of the light source device located in the light mixing element 21 in FIG. 7 and FIG. 7F is a second embodiment of the present invention. 9 is an enlarged view of the area A in FIG. 7. Please refer to FIG. 7 and FIG. 8 together. As shown in FIG. 9, the light source device of this embodiment can be used as a backlight module, for example, and is suitable for providing a surface light source required for a liquid crystal panel in a liquid crystal display. The light source device 300 includes a plate-shaped light mixing element 31o, a plurality of photodetectors 32o, a plurality of light diffusing members 330, and a plurality of light emitting elements 34o. The plate-shaped light mixing element 310 has a plurality of light mixing cavities 312, and each light mixing cavity 312 has a light emitting surface 314. The light emitting element 34o and the light detector 320 are disposed in each light mixing cavity 312 of the plate-shaped light mixing element. The light diffusing member 330 is located between the light emitting element 34 and the light emitting surface 314. In addition, the light source device 300 may further include a reflective layer 350, which is disposed on a side wall of the light mixing cavity 312. The photodetector 22 may include a photodiode. The choice of the type of light-emitting element 340 and the color of its light can be the same as in the previous embodiment. In addition, the light source device 300 further includes, for example, a casing 305, and the above-mentioned components are installed in the casing 305. With this, after the light emitted from the light-emitting element 340 leaves the plate-shaped light-mixing element 31, the light can be further mixed within the light-mixing distance D of 1241041 14486twf.doc / m retained in the housing 305, and further Improve the uniformity of the surface light source provided by the set 300. 10 is a block diagram of a light source device according to this embodiment. Please refer to FIG. 10 ′. The light source device 300 may further include a feedback circuit 36o, in which the regenerative power 23 is connected to the light emitting element 340 and the photodetector 320 t. The same as the embodiment of f, with the light detector 320 and the feedback circuit 36o, the light source device of this embodiment can also adjust the luminous amount of each light-emitting element 34o. Of course, the feedback circuit 26 can also be provided in other devices used in conjunction with the light source device 3⑻ 槔. In other words, the light source device 300 itself can be provided with a feedback circuit 360 without sores. It is worth mentioning that the shapes of the light mixing elements mentioned in the foregoing embodiments are only examples, and are not intended to limit the present invention. To sum up, the present invention is to install a light detector inside the mixed light cavity of the light source device to detect the light emission amount of the light emitting element, and at the same time, adjust the light emission of the light emitting element by using a built-in or external feedback circuit. the amount. Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application. μ [Brief Description of the Drawings] FIG. 1 shows a schematic configuration diagram of a conventional light emitting diode light source device. FIG. 2 is a cross-sectional audio diagram of a light source device according to the first embodiment of the present invention, and FIGS. 3 to 4 are two block diagrams of the light source device according to this embodiment. 11 1241041 14486twf.doc / m FIGS. 5 to 6 are schematic diagrams showing the arrangement positions of the other two types of light diffusing members in the light source device of this embodiment. FIG. 7 is a schematic cross-sectional view of a light source device according to a second embodiment of the present invention. FIG. 8 is a schematic perspective view of the plate-shaped light mixing element in FIG. 7. FIG. 9 is an enlarged view of an area A in FIG. 7. FIG. 10 is a block diagram of a light source device according to this embodiment. [Description of main component symbols] 100: Light-emitting diode light source device * 102: Red light-emitting diode wafer 104: Green light-emitting diode wafer 106: Blue light-emitting diode wafer 110: Circuit board 120: Base 130 : Shade 200: Light source device 210: Light mixing element _ 212: Light mixing cavity 214: Light emitting surface 220: Light detector 230: Light diffusing element 240: Light emitting element 250: Reflective layer 260: Feedback circuit 12 1241041 14486twf.doc / m 270: circuit board 300: light source device 305: housing 310: plate-shaped light mixing element 312: light mixing cavity 314: light exit surface 320: photodetector 330: light diffusion member 340: light emitting element 350: reflective layer 360: feedback circuit D: mixed light distance 13