九、發明說明： 【發明所屬之技術領域】 本發明係關於一種太陽光模擬器，特別是關於一種LEd 太陽光模擬器。 【先前技術】 太陽光模擬器是一種能夠非常準確地重現陽光光譜分佈 之發光裝置。太陽光模擬器對一些利用太陽能的產品之性 能測試是不可或缺的，例如：太陽能電池轉換效率的測試、 和一些加速老化的測試等。此外，由於能源短缺的時代來 臨，太陽能模組的需求日益蓮勃，使得太陽能模組之生產 測試規模也逐漸加大；這樣的情形下，也讓在轉換效率測 試時所使用的太陽光模擬器也逐漸熱門起來。 太陽光模擬器的技術已經發展數十年了，市面上也有許 多各式各樣的產品，但大多是使用氙燈製作而成。該些產 品均具有壽命短、價格昂貴等的缺點。美國專利第4,641，227 號揭露一種以白熾燈與氙燈為組合光源的太陽光模擬器。 其模擬光源是在用濾波片濾掉氙燈之紅外光，再加上白熾 燈所發出之紅外光。這樣的組合，使其模擬光之頻譜分佈 接近太陽光之實際光譜。但是這樣的發光裝置其機構複 雜，且氙燈之哥命短、高耗電、價格高，使得使用上仍不 夠具有效益。 美國專利第7,067,831號揭露一種也是使用氙燈為光源的 閃光式太陽光模擬器。此項裝置能提供如閃光燈般地模擬 太陽光閃光，使用一般之氙燈約可閃光1〇萬次。除使用氙 122253[l].doc •6· 來，不同於氙燈之單一光源組成的太陽光模擬器，由於不 同種類LED具有不同的光形分佈與發光強度，需要同時整 合空間分佈與光譜分佈，使其符合規範中照度分佈，如此 便可組合出一太陽光模擬器。led陣列化後，除加大照射 面積外，也可提高LED之照度與均勻性，且陣列化之大小 可隨需要而定。與傳統太陽光模擬器相比較，以Led作為 太陽光模擬器之光源也讓所需之光學機構變簡單’除此之 外，LED太陽光模擬器更具有低價、壽命長、省電等優勢。 圖1揭示一使用LED陣列光源11做為光源之太陽光模擬 器。該太陽光模擬器包含一 LED陣列光源11、一濾光片12、 一積分柱13、一透鏡陣列16和一聚焦透鏡15 ;該積分柱13 用於使照射光均勻；該透鏡陣列丨6使照射光更為均勻；該 濾光片12用於改變頻譜；而該聚焦透鏡15則用於減少光的 發散程度；其中該積分柱13亦可放置在積分柱13,之位置 上。發光裝置要成為一太陽光模擬器，則必須符合太陽光 模擬器之相關規範，例如：IEC-60904-9。從規範中之光頻 譜照度表可得知，太陽光模擬器需在6個波長區段中發出相 當照度之光；本實施例依此規範之要求在6個波長區段中各 設置複數顆屬於該波長之LED組成一 LED陣列光源11，例 如該LED陣列光源11可包含發出470奈米光之複數個 LED111、發波長525或590奈米光之複數個LED112、發出 波長660奈米光之複數個LEDU3、發出波長74〇奈米光之複 數個LED114、發出波長85〇奈米光之複數個lEdu5、發出 波長940奈米光之複數個LEdi16，這樣便能使該LED陣列 122253[l].doc 器26則可用於濾掉紅外光的部份。整合式光學系統24則是 可將接受到的光均勻地投射到一取樣表面27上，整合式光 學系統的組成可為一組透鏡陣列241與聚焦透鏡242，該整 合式光學系統係位於LED陣列光源21之光轴21Α上。 圖3顯示本發明一具體實施例之六種LED排列方式之示IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a solar simulator, and more particularly to a LEd solar simulator. [Prior Art] The solar simulator is a light-emitting device capable of reproducing the spectral distribution of sunlight very accurately. Solar simulators are indispensable for performance testing of products that use solar energy, such as solar cell conversion efficiency testing and some accelerated aging tests. In addition, due to the advent of energy shortages, the demand for solar modules is increasing, and the production test scale of solar modules is gradually increasing. In this case, the solar simulator used in the conversion efficiency test is also allowed. It has also become popular. The technology of the solar simulator has been developed for decades, and there are many different products on the market, but most of them are made using xenon lamps. These products have the disadvantages of short life and high price. A solar simulator using a combination of an incandescent lamp and a xenon lamp is disclosed in U.S. Patent No. 4,641,227. The analog light source is used to filter out the infrared light from the xenon lamp with a filter, plus the infrared light emitted by the incandescent lamp. This combination allows the spectral distribution of the simulated light to be close to the actual spectrum of sunlight. However, such a illuminating device has a complicated mechanism, and the scorpion lamp has a short life, high power consumption, and high price, so that the use is still insufficient. A flashing solar simulator that also uses a xenon lamp as a light source is disclosed in U.S. Patent No. 7,067,831. This device can provide a flash of light like a flash, and can be used to flash about 10,000 times with a typical xenon lamp. In addition to using 氙122253[l].doc •6·, a solar simulator consisting of a single light source different from xenon lamps, because different types of LEDs have different light distribution and luminescence intensity, it is necessary to integrate spatial distribution and spectral distribution simultaneously. Make it conform to the illuminance distribution in the specification, so that a solar simulator can be combined. After the LED array is formed, in addition to increasing the illumination area, the illumination and uniformity of the LED can be improved, and the size of the array can be determined as needed. Compared with the traditional solar simulator, Led as the light source of the solar simulator also makes the required optical mechanism simple. In addition, the LED solar simulator has the advantages of low cost, long life and power saving. . Figure 1 discloses a solar simulator using LED array source 11 as a light source. The solar simulator includes an LED array light source 11, a filter 12, an integrating column 13, a lens array 16, and a focusing lens 15; the integrating column 13 is used to make the illumination light uniform; the lens array 丨6 makes The illumination light is more uniform; the filter 12 is used to change the frequency spectrum; and the focus lens 15 is used to reduce the degree of light divergence; wherein the integration column 13 can also be placed at the position of the integration column 13. To be a solar simulator, the illuminator must comply with the relevant specifications of the solar simulator, eg IEC-60904-9. It can be known from the optical spectrum illuminance table in the specification that the solar simulator needs to emit a relatively illuminating light in six wavelength segments; this embodiment sets a plurality of pixels in each of the six wavelength segments according to the requirements of the specification. The LED of the wavelength constitutes an LED array light source 11. For example, the LED array light source 11 may include a plurality of LEDs 111 emitting 470 nm, a plurality of LEDs 112 emitting wavelengths of 525 or 590 nm, and a plurality of LEDs 3 emitting a wavelength of 660 nm. A plurality of LEDs 114 emitting a wavelength of 74 nanometers, a plurality of lEdu5 emitting a wavelength of 85 nanometers, and a plurality of LEdis 16 emitting a wavelength of 940 nanometers, so that the LED array 122253[l].doc 26 can be used for Filter out the part of the infrared light. The integrated optical system 24 is capable of uniformly projecting the received light onto a sampling surface 27, which may be a set of lens arrays 241 and focusing lenses 242, the integrated optical system being located in the LED array The optical axis 21 of the light source 21 is turned on. FIG. 3 shows an arrangement of six LEDs according to an embodiment of the present invention.
意圖。此實施例中一共使用6種發出不同波長之LED 3 1〜3 6 ’共組成一發出規範中涵蓋6個波長區段之光。依此 類LED六角外型，依序將6種、每種3個LED 31〜36排成類 似蜂巢狀之結構。這種週期性之排列並非唯一，最佳之排 列組合方式得依照led外型、不同波長之LED之照度等因 素共同考量下，才可組合出混光效果均勻和達到規範要求 之^ LED兩卜列。 本發明之技術内容及技術特點已揭示如上，然而熟悉本 項技術之人士仍可能基於本發明之教示及揭示而作種種不 背離本發明精神之替換及修飾。因此，本發明之保護範圍 應不限於實施例所揭示者，而應包括各種不背離本發明之 替換及修飾，並為以下之申請專利範圍所涵蓋。 【圖式簡單說明】 圖1顯示本發明一具體實施例之led太陽光模擬器之示 意圖； 圖2顯不本發明另一具體實施例之LED太陽光模擬器之 示意圖；及 圖3顯示本發明一具體實施例之六種lEd排列方式之示 意圖。 !22253[l].doc •10 1322871 【主要元件符號說明】 11 LED陣列光源 12 濾光片 13 ' 13, 積分柱 14 取樣表面 15 聚焦透鏡 16 透鏡陣列 21 LED陣列光源 22 白熾燈 23 濾光片 24 整合式光學系統 25 聚焦反射鏡 26 熱吸收器 27 取樣表面 31- 36 LED lll· 〜116LED 241 透鏡陣列 242 聚焦透鏡 122253[丨].doc -11*intention. In this embodiment, a total of six LEDs 3 1 to 3 6 ' that emit different wavelengths are used to form a light that covers six wavelength segments in the specification. According to this type of LED hexagonal shape, six kinds of each of the three LEDs 31 to 36 are arranged in a honeycomb-like structure. This periodic arrangement is not unique. The best arrangement and combination method can be combined according to factors such as LED appearance and illumination of LEDs with different wavelengths. Only when the light mixing effect is uniform and meets the requirements of the specification can be combined. Column. The technical contents and technical features of the present invention have been disclosed as above, and those skilled in the art can still make various substitutions and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a LED solar simulator according to an embodiment of the present invention; FIG. 2 is a schematic view showing an LED solar simulator according to another embodiment of the present invention; and FIG. 3 is a view showing the present invention. A schematic diagram of six lEd arrangements of a particular embodiment. !22253[l].doc •10 1322871 [Description of main component symbols] 11 LED array light source 12 Filter 13 ' 13, integral column 14 sampling surface 15 focusing lens 16 lens array 21 LED array light source 22 incandescent lamp 23 filter 24 Integrated Optical System 25 Focusing Mirror 26 Heat Absorber 27 Sampling Surface 31- 36 LED lll· ~116LED 241 Lens Array 242 Focusing Lens 122253[丨].doc -11*