201248050 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種太陽光模擬器，特別是指一種光 線均勻且平行度高的太陽光模擬器。 【先前技術】 太陽光模擬器用於模擬發射出太陽光，可應用於太陽 能電池轉換效率的檢測。參閱圖1，為一種已知太陽光模擬 器1，包含：一燈泡11、一將燈泡u之光線朝前反射的集 光鏡12、一個用於將入射光線均勻化的均光陣列13，以及 一個將通過該均光陣列13而來的光線聚光的聚焦透鏡14。 一般而言，太陽光模擬器i的光線均勻度必需符合IEC_ 60904-9的規範’為了達到光均勻度的要求，該均光陣列i3 通常是由數個透鏡或是由數個實心棒狀的柱鏡組成高密度 的陣列，但由於加工尺寸的限制，每個透鏡或實心棒狀柱 鏡的邊長至少為2毫米（mm)，使該均光陣列13的尺寸最大 將達到5Gmm ’產生體積大的缺點。而且所述實心棒狀柱鏡 另有缺點，因為柱鏡的表面容易將入射光線往外反射發散 ，進而降低光線通過該柱鏡内部傳導的比例及均光效果。 另外’該均光陣列13的位置大約在該聚线鏡14的 焦=位置，由幾合光學原理可知，當均光陣列Π的體積夠 小二可以視為點光源，此時光通過該聚焦透201248050 VI. Description of the Invention: [Technical Field] The present invention relates to a solar simulator, and more particularly to a solar simulator with uniform light lines and high parallelism. [Prior Art] The solar simulator is used to simulate the emission of sunlight and can be applied to the detection of solar cell conversion efficiency. Referring to Figure 1, there is a known solar simulator 1 comprising: a bulb 11, a collecting mirror 12 for reflecting the light of the bulb u, a homogenous array 13 for homogenizing the incident light, and A focusing lens 14 that condenses light passing through the uniform light array 13. In general, the uniformity of the light of the solar simulator i must comply with the specification of IEC 60904-9. In order to achieve the uniformity of light, the uniform array i3 is usually composed of several lenses or a plurality of solid rods. The cylindrical mirror constitutes a high-density array, but due to the limitation of the processing size, the length of each lens or solid rod-shaped cylindrical mirror is at least 2 mm (mm), so that the size of the homo-light array 13 will reach a maximum of 5 Gmm. Big disadvantages. Moreover, the solid rod-shaped cylindrical mirror has another disadvantage, because the surface of the cylindrical mirror is easy to reflect and diverge the incident light, thereby reducing the proportion of light transmitted through the cylindrical mirror and the uniform light effect. In addition, the position of the uniform light array 13 is approximately at the focal position of the condenser mirror 14. It can be known from the optical principle that when the volume of the uniform light array is small enough, it can be regarded as a point light source, and at this time, the light passes through the focus.
以平行光射出。然而，因為 T 法被視為的句先陣列體積大，無 法被視為點先源，所以通過該聚焦透鏡 的平行光，其發散角Θ大 “成凡美 為.5〜7度，亦即該太陽光模擬 201248050 器1的光線平行度為1.5~7度，其平行度不佳。 而如果要使均光陣列13體積縮小，必需減少陣列中的 元件數量以降低陣列密度，如此又會產生光均勻度下降的 缺點。 【發明内容】 因此，本發明之目的，即在提供一種具有良好的光均 勻度及光線平行度的太陽光模擬器。 於是，本發明太陽光模擬器，包含：一光源單元、一 均光件’以及一菲涅爾透鏡。 該均光件間隔地設置在該光源單元的一側，並包括一 個中空柱狀的本體、一個彼覆在該本體的内周面的反射膜 、一個朝向該光源單元的入光面、一個相反於該入光面的 出光面，以及一個貫穿該入光面及該出光面的反射面。所 述入光面及出光面都是由該本體及反射膜共同形成，該反 射面為該反射膜的内部表面，且該反射面界定出一個軸向 延伸的通道，該通道可供從該光源單元入射而來的光線通 過，該反射面用於將該光線多次反射後再使光線由該出光 面射出。 該菲涅爾透鏡間隔地設置在該均光件的一側，並將通 過該均光件而來的光線聚光。該菲涅爾透鏡包括一個朝向 該均光件的透鏡入光面，以及一個相反於該透鏡入光面的 透鏡出光面，該透鏡出光面具有數個曲率不同的聚光面部 〇 【實施方式】 4 201248050 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之五個較佳實施例的詳細說明中，將可 清楚的呈現。在本發明被詳細描述前，要注意的是，在以 下的說明内容中，類似的元件是以相同的編號來表示。 參閱圖2'3’本發明太陽光模擬器之第—較佳實施例 广/: 一光源單元2、一個均光件3,以及-個菲淫爾透鏡 (Fresnel Lens) 4。 該光源單元2包括—個第—光源21，以及—個設置在 該第-光源21周圍的第一集光鏡22。本實施例的第一光源 ^為山气燈(Xe_ Lamp)，並^義—個通過該第—光源”且 “〇第力源21的光線傳播方向而前後延伸的第一光轴 1該第—集光鏡22用於反射該第-光源21的光線，使 光線朝該均光件3的方向聚焦射出。 X句光件3 /。著該第—光軸u而間隔排列在該第一光 源二的前方’本實施例的均光件3為一個中空的積分柱鏡 化著該第光軸U而長向延伸，並包括-個四邊形的中 空長柱狀的本體31，以及-個披覆在該本體Μ的内周面的 反射膜32。該本體31的材料例如金屬、玻璃、石英或石夕， 但不限於此，該反射膜U㈣料為反射率介於 〇% 99.99%的材料’可以為金屬、介電材料或金屬與介電 材料的配。’而且可以為單層膜，也可以為多層膜。 該本體31及該反射膜32結合而形成該均光件3後’ 該均光件3包括—個鉬Α #蚀 個朝向該第一光源21的入光面33、一個 相反於該人光® 33的出光面34,以及-個貫穿該入光面 201248050 33及出光面34並沿著該第一光軸L1圍繞並前後延伸的反 射面35。在本實施例中，該入光面33及出光面34是由該 本體31及反射膜32的表面共同形成，該反射面35是由該 反射膜32單獨形成，即為該反射膜32的内側表面，且該 反射面35界定出一個沿該第一光軸L1軸向延伸的通道％ 〇 本實施例的均光件3為一個橫截面為長方形的中空均 勻長柱狀體，該入光面33及出光面34的形狀及大小皆相 同，該入光面33與出光面34的距離相當於該均光件3的 長度為a，較佳地a為1〇毫米（mm卜2〇〇毫米。該反射面％ 包括二個左右間隔且直立的第一側邊351，以及二個上下間 隔並連接在所述第一側邊351之間的第二側邊352，較佳地 ，該第一側邊351及第二側邊352的長度皆為2麵〜2〇_ ，第一側邊351及第二側邊352的長度可以相同，也可以 不同。 需要說明的是，上述均光件3的長度a相當於該通道 36的軸向長度，該第一側邊351的長度相當於該通道的 上下方向長度，該第二側邊351的長度相當於該通道36的 左右方向長度β 该菲涅爾透鏡4沿著該第一光軸L1而間隔排列在該均 光件3的前方，並包括一個朝向該均光件3的出光面^斗的 透鏡入光面41，以及一個相反於該透鏡入光面41的透鏡出 光面42,該透鏡出光面42包括數個曲率不同的聚光面部 421。由於菲涅爾透鏡4比一般凸透鏡的材料用量更少，具 201248050 有重量輕、體積小，製造成本低的優點，而且 更能有效地將光線聚焦。 度4 接著說明本實施例各元件之間的較佳間距，本實施例 的第集光鏡22為橢圓反射鏡’並具有一個鄰近該反射鏡 本身的第-焦點A ’以及一個遠離該反射鏡的第二焦點B， 且該第一焦點A及第二焦點B的距離為dl。而該均光件的 入光面33的位置可以如圖2示意，位於該第-焦點A及第 二焦點B之間’但也可以重疊位於該第二焦點b上，或者 也可以位於該第二焦點B的前側，只要該入光面33的位置 接近該第-集光鏡22將光線聚焦的位置即可，亦即接近該 第二焦點B即可。因此，該入光面33與該第二焦點B的距 離為d2,較佳地们為〇〜〇5dl。所述菲埋爾透鏡4的焦距 長度為f’較佳地’該菲㈣透鏡4與該均光件3的出光面 Μ為Μ，藉此使該出光面34接近該菲淫 爾透鏡4的焦點位置。 本發明使用時，該第_伞.、s 1, ,, 丁发弟光源21發出的光線受到該第一 集光鏡22聚光反射並朝該均光件3人射，光線自該均光件 3的入光面33進人該通道36,光線通過該通道％的過程 ’文到錢射面35的多重反射，使光線在該均 «均勻地反射及漫射，制為該均光件3的長度夠長而 ，先線反射次數夠多’因而提升射出光的均勾度，最後該 先線由該出光面34射向該菲埋爾透鏡4，並受到菲 /里爾透鏡4聚焦成接近平行光。 因此’本發明使用該菲淫爾透鏡4，比起一般凸透鏡具 201248050 有更優良的聚光作用’而且該均光件3的中线構，配合 反射面35的良好反射效果’使光線能在該均光件3内部反 射行進，能降低光線能量的損耗，使光線能量集中、射出 角度也較集中且均勾（由均光件3射出的光線發散角大約只 有15度）。所以本發明藉由菲涅爾透鏡4搭配該單一的中空 積分柱鏡構成的均光件3,就能達到光㈣、提升聚光能: ，使光線平行的功效’相對於傳統㈣透鏡陣列或實心棒 狀柱鏡陣列的設計，本發明能有效縮小裝置體積、減輕重 量，提升光線平行度。 需要說明的是，該均光件3不限於圖3揭露之形態， 例如也可以如圖4所示’其截面大小是由該人光面％朝該 出光面34的方向逐漸變大；另外也可以如圆5所示，為> 邊形的中空長柱狀體，但實施時不需限制其邊數。 八 參閲圖6’本發明太陽光模擬器之第二較佳實施例與該 第-較佳實施例之結構大致相同，不同的地方在於：本實 把例還增加&置—個沿著該第—光軸而排列在該第一光 源一21及該均光件3之間的聚光透鏡5，該聚光透鏡5先將 第一光源21的光線聚焦’更能有效提升光線能量及光線平 =又田J該聚光透鏡5也可以如圖中的假想線所示， 設置在該均光件3及該菲涅爾透鏡4之間。當設置該聚光 透鏡5時’該均光件3與該第—光源21間的距離，以及與 i菲i透鏡4間的距離’可依光線聚焦情況作適當調整 〇 參閱圖7’本發明太陽光模擬器之第三較佳實施例與該 8 201248050 第一較佳實施例之結構大致相同，以下只說明不同的地方 。本貫施例的考源單元2除了包括該第一光源2〗及第一集 光鏡22之外，還包括一個間隔地設置在該第一光源21的 側的第—光源23，該第二光源23為白熾燈，定義一通過 該第二光源23且沿著該第二光源23的光線傳播方向延伸 的第一光軸L2，該第二光軸L2為左右向延伸並垂直該第一 光轴L1。 5玄光源單元2還包括一個位於該第二光源23的周圍的 第二集光鏡24，以及一個設置於該第一光軸[丨及該第二光 軸L2的交會處的濾光片25。該第二集光鏡24用於反射該 第二光源23的光線，使光線沿著該第二光軸l2而朝該濾 光片25的方向聚焦射出。該濾光片25用於反射中長波長 光線（例如紅外光）’並可供中低波長光線（例如可見光及紫 外光）通過。 本實施例使用時，由於該濾光片25的濾光作用，使該 第一光源21光線中的紅外光被該濾光片25朝右反射，而 可見光及紫外光則能通過該濾光片25朝該均光件3射入； 另一方面’該第二光源23光線中的紅外光被該濾光片25 反射而朝該均光件3射入，該第二光源23的可見光及紫外 光則沿著該第二光軸L2方向而通過該濾光片25。因此，到 達該均光件3的光線為第一光源21的可見光及紫外光與第 一光源23的紅外光，此總合的光受到該均光件3的均光作 用’以及該菲涅爾透鏡4的聚光作用，其產生的效果與該 第一較佳實施例所述的相同，不再說明。 201248050 由於該氙燈的第一光源21在中長波段的光譜與真實太 陽光差異較大’所以本實施例增設該第二光源23來補償該 第一光源21與真實太陽光之間的光譜差異，使最後射出的 光線光譜更接近真實太陽光。 參閱圖8,本發明太陽光模擬器之第四較佳實施例與該 第二較佳貫施例之結構大致相同’不同的地方在於：本實 施例將該第一光源21、第一集光鏡22的位置與該第二光源 23、第一集光鏡24的位置對調。因此，本實施例的第二光 軸L2為前後延伸，第一光軸L1為左右延伸，該均光件3 及菲/圼爾透鏡4皆沿著該第二光轴L2而間隔地位於該第二 光源23前側。此外’本實施例的濾光片25,用於反射中低 波段光線（可見光及紫外光），並可供中長波段光線（紅外光） 通過。因此，本實施例的第一光源21的可見光及紫外光被 該濾光片25 ’反射而朝該均光件3入射，該第二光源23的 紅外光可穿過該濾光片25,而射向該均光件3,使得最後進 入該均光件3的光線同樣由該第一光源21及該第二光源23 共同貢獻’能產生較接近真實太陽光光譜的光線。 參閱圖9,本發明太陽光模擬器之第五較佳實施例與該 第一較佳實施例之結構大致相同，以下只說明不同的地方 。本實施例的光源單元2包括間隔設置的一第一光源21、 一第一光源23與一第二光源26，以及分別用於反射該第一 光源21、第_一光源23與第二光源26的光線的一第一华光 鏡22、一第一集光鏡24與一第三集光鏡27。其中該第一 光源21為白熾燈’其可見光接近太陽光源，該第二光源a 10 201248050 、 為氙燈（Xenon Lamp)，其紫外光接近太陽光源，該第三光源 26為白熾燈，其紅外光接近太陽光源，且該第三光源相 對於該第二光源23鄰近該均光件3。 本實施例之第一光源21的一第一光軸L1為前後向延 伸，所述第二光源23的一第二光軸L2及該第三光源26的 一第二光軸L3皆為左右向延伸。該第一光軸L1垂直該第 二光軸L2及第三光軸L3,該第二光軸[2平行於該第三光 軸L3。所述均光件3及菲涅爾透鏡4皆是沿著該第一光轴 L1而間隔排列。 該光源單元2還包括一個設置於該第一光軸Ll及該第 二光軸L2的交會處的第一濾光片28，以及一個設置於該第 一光軸L1及該第三光軸乙3的交會處的第二濾光片29。該 第-濾光片28用於反射紫外光，並可供可見光及紅外光通 過’該第二渡光片29用於反射紅外光，並可供可見光及紫 外光通過。 ' 本實施例透過上述三個光源及兩個遽光片的搭配設計 ’使得最後進人該均光件3的光線是由該第—光源Μ的可 見光 '該第二光源23的紫外光及該第三光源％的紅外光 - 共同貢獻，使該光線接近真實太陽光。 淮X上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修御，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 201248050 圖1是一種已知太陽光模擬器的示意圖，圖中的箭頭 用於示意光線； 圖2是本發明太陽光模擬器之一第一較佳實施例的示 意圖，圖中的箭頭用於示意光線； 圖3是該第一較佳實施例的一均光件的立體圖； 圖4是一立體圖，顯示本發明之另一種形態的均光件 圖5是一立體圖，顯示本發明之又一種形態的均光件 圖6是本發明太陽光模擬器之一第二較佳實施例的示 意圖； 圆7是本發明太陽光模擬器之一第三較佳實施例的示 意圖； 園8是本發明太陽光模擬器之一第四較佳實施例 意圖；及 圆9是本發明太陽光模擬器之一第五較佳實施例的示 12 201248050 【主要元件符號說明】 2 ......... •光源單元 351 .......第 側邊 21........ •第一光源 352 .......第二側邊 22........ •第一集光鏡 36.· .......通道 23........ •第二光源 4… .......菲涅爾透鏡 24........ •第二集光鏡 41 ·· .......透鏡入光面 25 ' 25? •滤、光片 42·· .......透鏡出光面 26........ •第三光源 421 .......聚光面部 27........ •第二集光鏡 5… .......聚光透鏡 28........ •第i遽光片 A... .......苐 焦點 29........ •第二濾光片 B… .......第二焦點 3 ......... •均光件 a — ……長度 31........ •本體 dl、 d2、d3 32........ •反射膜 ••…距離 33........ •入光面 LI·· .....第 光軸 34........ •出光面 L2.. ……第二光軸 35........ •反射面 L3·· .....第二光軸 13Shot in parallel light. However, because the T method is considered to be a large array of sentences, it cannot be regarded as a point source, so the divergence angle of the parallel light passing through the focusing lens is "5 to 7 degrees, that is, The solar light simulation 201248050 has a light parallelism of 1.5 to 7 degrees, and its parallelism is not good. If the size of the homogenous light array 13 is to be reduced, it is necessary to reduce the number of components in the array to reduce the array density, which in turn generates SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a solar simulator having good light uniformity and ray parallelism. Thus, the solar simulator of the present invention comprises: a light source unit, a light equalizing member, and a Fresnel lens. The light equalizing members are disposed at one side of the light source unit at intervals, and include a hollow column-shaped body and a surface of the inner peripheral surface of the body. a reflective film, a light incident surface facing the light source unit, a light exit surface opposite to the light incident surface, and a reflective surface penetrating the light incident surface and the light exit surface. The light incident surface and the light exit surface are both The body and the reflective film are formed together, the reflective surface is an inner surface of the reflective film, and the reflective surface defines an axially extending passage for the light incident from the light source unit to pass through, the reflective surface The light is reflected from the light exiting surface and then emitted from the light exiting surface. The Fresnel lens is disposed at one side of the light homogenizing member, and condenses light passing through the light homogenizing member. The Fresnel lens includes a lens light incident surface facing the light homogenizing member, and a lens light exiting surface opposite to the light incident surface of the lens, the lens emitting surface having a plurality of condensing surfaces having different curvatures. [Embodiment] 4 The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. In the following description, like elements are denoted by the same reference numerals. Referring to Fig. 2'3', the solar light simulator of the present invention - the preferred embodiment is wide /: a light source 2. A light equalizing member 3, and a Fresnel Lens 4. The light source unit 2 includes a first light source 21, and a first light collecting mirror disposed around the first light source 21. 22. The first light source ^ of the embodiment is a xenon lamp (Xe_Lamp), and a first optical axis 1 extending through the first light source and "the light source propagation direction of the first force source 21" The first light collecting mirror 22 is configured to reflect the light of the first light source 21 to cause the light to be focused and emitted toward the light equalizing member 3. The X-ray light member 3 / is arranged at intervals along the first optical axis u The front side of the first light source 2' is a hollow integral cylinder that is longitudinally extended by the optical axis U, and includes a quadrangular hollow long column-shaped body 31, and - A reflective film 32 is coated on the inner peripheral surface of the body. The material of the body 31 is, for example, metal, glass, quartz or stone, but the material of the reflective film U (four) is a material having a reflectance of 〇% 99.99%, which may be metal, dielectric material or metal and dielectric material. Match. And it can be a single layer film or a multilayer film. After the body 31 and the reflective film 32 are combined to form the light-receiving member 3, the light-smoothing member 3 includes a molybdenum crucible # etched toward the light-incident surface 33 of the first light source 21, and one opposite to the human light® A light-emitting surface 34 of 33, and a reflecting surface 35 extending through the light-incident surface 201248050 33 and the light-emitting surface 34 and extending along the first optical axis L1 and extending forward and backward. In this embodiment, the light-incident surface 33 and the light-emitting surface 34 are formed by the surface of the body 31 and the reflective film 32. The reflective surface 35 is formed by the reflective film 32 alone, that is, the inner side of the reflective film 32. a surface, and the reflecting surface 35 defines a channel extending in the axial direction of the first optical axis L1. The light homogenizing member 3 of the embodiment is a hollow uniform long columnar body having a rectangular cross section, and the light incident surface The shape and size of the light-emitting surface 34 are the same, and the distance between the light-incident surface 33 and the light-emitting surface 34 is equivalent to the length of the light-homogenizing member 3 being a, preferably a is 1 mm (mm 2 mm) The reflective surface % includes two left and right spaced apart first side edges 351, and two second side edges 352 spaced apart from each other and connected between the first side edges 351. Preferably, the first The lengths of the side 351 and the second side 352 are both 2 to 2 〇 _, and the lengths of the first side 351 and the second side 352 may be the same or different. It should be noted that the above-mentioned light absorbing member 3 The length a corresponds to the axial length of the passage 36, and the length of the first side 351 corresponds to the upper and lower sides of the passage. The length of the second side 351 is equivalent to the length of the channel 36 in the left-right direction. The Fresnel lens 4 is spaced along the first optical axis L1 in front of the light-receiving member 3 and includes an orientation. The lens light-incident surface 41 of the light-emitting surface of the light-receiving member 3 and a lens light-emitting surface 42 opposite to the light-incident surface 41 of the lens, the lens light-emitting surface 42 includes a plurality of light-converging surface portions 421 having different curvatures. Fresnel lens 4 has less material than general convex lens, and has the advantages of light weight, small volume, low manufacturing cost, and more effective focusing of light. 2012. Next, the components between the components of this embodiment are described. Preferably, the first collecting mirror 22 of the present embodiment is an elliptical mirror 'and has a first focus A ' adjacent to the mirror itself and a second focus B away from the mirror, and the first focus A The distance between the second focus B and the second focus B is dl. The position of the light incident surface 33 of the light homogenizer can be between the first focus A and the second focus B as shown in FIG. 2 but can also overlap at the second Focus b, or it can be located in the first The front side of the focus B is as long as the position of the light incident surface 33 is close to the position where the first light collecting mirror 22 focuses the light, that is, close to the second focus B. Therefore, the light incident surface 33 and the first light incident surface 33 The distance between the two focal points B is d2, preferably 〇~〇5dl. The focal length of the Philippine lens 4 is f' preferably 'the phenanthrene (four) lens 4 and the light exiting surface of the homogenizing element 3 Therefore, the light-emitting surface 34 is brought close to the focus position of the Philippine lens 4. When the present invention is used, the light emitted by the first umbrella, the s 1, and the Dingfadian light source 21 is received by the first light collecting mirror. The light is reflected by the light and is incident on the light-receiving member 3, and the light enters the channel 36 from the light-incident surface 33 of the light-receiving member 3, and the light passes through the channel to process multiple reflections of the text to the money surface 35. The light is uniformly reflected and diffused in the same direction, and the length of the light-smoothing member 3 is long enough, and the number of reflections of the first line is sufficient, thereby increasing the uniformity of the emitted light, and finally the leading line is from the light-emitting surface. 34 is directed toward the Philippine lens 4 and is focused by the Philippine/Lille lens 4 into near parallel light. Therefore, the present invention uses the Philippine lens 4, which has a better concentrating effect than the general lenticular lens 201248050, and the center line structure of the averaging member 3, with the good reflection effect of the reflecting surface 35, enables the light to be The internal light-receiving member 3 reflects and travels internally, which can reduce the loss of light energy, concentrate the light energy, and concentrate the shooting angle and both hooks (the light-emitting angle emitted by the light-homogenizing member 3 is only about 15 degrees). Therefore, in the present invention, by using the Fresnel lens 4 and the homogenizing member 3 composed of the single hollow integrating cylindrical mirror, the light (4) can be achieved, and the concentrating energy can be improved: the effect of parallelizing the light is 'relative to the conventional (four) lens array or The design of the solid rod-shaped cylindrical mirror array can effectively reduce the volume of the device, reduce the weight, and improve the parallelism of the light. It should be noted that the light-homogenizing member 3 is not limited to the form disclosed in FIG. 3, and for example, as shown in FIG. 4, the cross-sectional size thereof may gradually increase from the light-emitting surface of the person toward the light-emitting surface 34; As shown by the circle 5, it may be a hollow long columnar body of >>, but the number of sides is not limited in implementation. 8 is a schematic view of the second preferred embodiment of the solar simulator of the present invention, which is substantially the same as the structure of the first preferred embodiment, except that the actual example is further increased. The concentrating lens 5 is arranged between the first light source 21 and the light absorbing member 3, and the concentrating lens 5 first focuses the light of the first light source 21 to improve the light energy. The light condensing unit = the field J. The condensing lens 5 may be disposed between the light averaging member 3 and the Fresnel lens 4 as indicated by an imaginary line in the drawing. When the concentrating lens 5 is disposed, 'the distance between the averaging element 3 and the first light source 21, and the distance ' between the illuminating lens 2 and the illuminating lens 4' can be appropriately adjusted according to the ray focusing condition. Referring to FIG. 7 The third preferred embodiment of the solar simulator is substantially identical to the structure of the first preferred embodiment of the 8 201248050, and only the differences will be described below. In addition to the first light source 2 and the first light collecting mirror 22, the source unit 2 of the present embodiment further includes a first light source 23 spaced apart from the side of the first light source 21, the second The light source 23 is an incandescent lamp, defining a first optical axis L2 extending through the second light source 23 and along the light propagation direction of the second light source 23, the second optical axis L2 extending left and right and perpendicular to the first light Axis L1. The singular light source unit 2 further includes a second concentrating mirror 24 located around the second light source 23, and a filter 25 disposed at the intersection of the first optical axis [the 光 and the second optical axis L2] . The second collecting mirror 24 is configured to reflect the light of the second light source 23 such that the light is focused and emitted toward the filter 25 along the second optical axis 12. The filter 25 is for reflecting medium to long wavelength light (e.g., infrared light) and is permeable to medium and low wavelength light (e.g., visible light and ultraviolet light). In the embodiment, the infrared light in the light of the first light source 21 is reflected to the right by the filter 25 due to the filtering action of the filter 25, and visible light and ultraviolet light can pass through the filter 25. On the other hand, the infrared light in the light of the second light source 23 is reflected by the filter 25 and is incident on the light equalizing member 3, and the visible light and the ultraviolet light of the second light source 23 are The filter 25 is passed in the direction of the second optical axis L2. Therefore, the light reaching the light equalizing member 3 is the visible light and the ultraviolet light of the first light source 21 and the infrared light of the first light source 23, and the combined light is subjected to the homogenizing action of the light homogenizing member 3 and the Fresnel The condensing action of the lens 4 is the same as that described in the first preferred embodiment and will not be described. 201248050 Since the first light source 21 of the xenon lamp has a large difference between the spectrum of the medium and long wavelength bands and the real sunlight, the second light source 23 is added in the embodiment to compensate the spectral difference between the first light source 21 and the real sunlight. Make the last shot of the light spectrum closer to real sunlight. Referring to FIG. 8, the fourth preferred embodiment of the solar simulator of the present invention is substantially the same as the structure of the second preferred embodiment. The difference is that the first light source 21 and the first light collection are in this embodiment. The position of the mirror 22 is opposite to the position of the second light source 23 and the first light collecting mirror 24. Therefore, the second optical axis L2 of the present embodiment extends forward and backward, and the first optical axis L1 extends left and right. The light equalizing member 3 and the Philippine/Mulnar lens 4 are spaced apart along the second optical axis L2. The front side of the second light source 23. Further, the filter 25 of the present embodiment is for reflecting low- and medium-wavelength light (visible light and ultraviolet light) and is capable of passing medium-long-wavelength light (infrared light). Therefore, the visible light and the ultraviolet light of the first light source 21 of the present embodiment are reflected by the filter 25 ′ and incident on the light equalizing member 3 , and the infrared light of the second light source 23 can pass through the filter 25 . The light is incident on the homogenizing element 3, so that the light finally entering the homogenizing element 3 is also contributed by the first light source 21 and the second light source 23 to generate light that is closer to the true solar spectrum. Referring to Fig. 9, the fifth preferred embodiment of the solar simulator of the present invention is substantially the same as the structure of the first preferred embodiment, and only the differences will be described below. The light source unit 2 of the embodiment includes a first light source 21, a first light source 23 and a second light source 26, and is configured to reflect the first light source 21, the first light source 23 and the second light source 26, respectively. A first illuminating mirror 22, a first concentrating mirror 24 and a third concentrating mirror 27 of the light. The first light source 21 is an incandescent lamp whose visible light is close to the solar light source, and the second light source a 10 201248050 is a Xenon Lamp whose ultraviolet light is close to the solar light source, and the third light source 26 is an incandescent lamp, and the infrared light thereof Proximate to the solar source, and the third source is adjacent to the homogenizer 3 relative to the second source 23. A first optical axis L1 of the first light source 21 of the present embodiment extends in the front-rear direction, and a second optical axis L2 of the second light source 23 and a second optical axis L3 of the third light source 26 are both left and right. extend. The first optical axis L1 is perpendicular to the second optical axis L2 and the third optical axis L3, and the second optical axis [2 is parallel to the third optical axis L3. The homogenizer 3 and the Fresnel lens 4 are arranged at intervals along the first optical axis L1. The light source unit 2 further includes a first filter 28 disposed at an intersection of the first optical axis L1 and the second optical axis L2, and a first optical axis L1 and the third optical axis B The second filter 29 of the intersection of 3. The first filter 28 is for reflecting ultraviolet light and is permeable to visible light and infrared light. The second light guide sheet 29 is for reflecting infrared light and is permeable to visible light and ultraviolet light. In the present embodiment, the light combination of the three light sources and the two light-emitting sheets is such that the light that is finally incident on the light-homogenizing member 3 is the visible light of the first light source, the ultraviolet light of the second light source 23, and the The third source of infrared light - contributes together to bring the light close to real sunlight. The above description of the present invention is only a preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent change and repair according to the scope of the invention and the description of the invention. Royal, are still within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a known solar simulator, the arrows in the figures are used to illustrate light; FIG. 2 is a schematic view of a first preferred embodiment of the solar simulator of the present invention. 3 is a perspective view of a homogenizing member of the first preferred embodiment; FIG. 4 is a perspective view showing a homogenizing member of another embodiment of the present invention. FIG. 6 is a schematic view of a second preferred embodiment of a solar simulator of the present invention; a circle 7 is a schematic view of a third preferred embodiment of the solar simulator of the present invention; The garden 8 is a fourth preferred embodiment of the solar simulator of the present invention; and the circle 9 is the fifth preferred embodiment of the solar simulator of the present invention. 12 201248050 [Major component symbol description] 2 .. . . . • Light source unit 351 . . . side side 21... • first light source 352 . . . second side 22... ..... • First light concentrator 36.·.......Channel 23.....•Second light source 4.......... Fresnel lens 24. ....... • The second concentrator 41 ·· . . . lens entrance surface 25 ' 25? • filter, light film 42 · · ... lens illuminating surface 26 .... • Third light source 421 .. concentrating face 27........ • Second concentrating mirror 5......... Condenser lens 28... .. • i 遽 片 A... ...... 苐 focus 29........ • second filter B... ....... second focus 3 . ........ • Uniform light a — ...... Length 31........ • Body dl, d2, d3 32........ • Reflective film ••...distance 33 ........ • Light-in surface LI··... Optical axis 34........ • Light-emitting surface L2........ Second optical axis 35..... ... • Reflecting surface L3··.....second optical axis 13