本篇論文將驗證以水冷方式散熱兼具可調光LED植物燈為研究目標，水冷式LED植物燈是由一根空心內管，表面貼附有LED陣列，再將內管穿過另一根空心壓克力管，避免水流滲入至內管表面影響LED陣列。
LED陣列所使用的元件是由多種有色螢光粉與不同波長的晶粒所組成，而晶粒包含紫外光晶粒(λpeak=382nm)、紫光晶粒(λpeak=412nm)和藍光晶粒(λpeak=452nm)，螢光膠層是由紅色、綠色螢光粉與透明矽膠混合，並且透過田口式實驗方法調整螢光粉的濃度，得到最佳的色域面積。以20mA電流各別驅動紫外光、紫光和藍光晶粒，所量測CIE1976色座標點分別為(0.1508, 0.5501)、(0.3899, 0.4292)、(0.2293, 0.1496)，可調色域面積與sRGB的色域面積比值為65.07%。藉由模擬軟體優化燈管擺放距離，模擬所得照度均勻度為0.914，經實驗驗證，實際照度均勻度為0.905。

The objective of this thesis is to verify the functions of a color tunable light emitting diode (LED) grow light with water cooling capability. The water cooled LED grow light is composed of a hollow inner tube, on which's surface a LED array is positioned , is inserted into another outer acrylic hollow tube to prevent the LED array on the surface of the inner tube from water permeating.
The LED array is based on the principle of a multiple phosphors blend excited by different wavelengths and their combinations. Furthermore, the LED array is comprised of three excitation chips of which are a ultraviolet light chip (λpeak=382nm) and a purple light chip (λpeak=412nm) and a blue light chip (λpeak=382nm); the phosphor blend is mixing transparent resin with red and green phosphors. To optimized the LED array performance, the concentration of phosphors blend layer is adjusted by means of Taguchi Method. At 20mA drive current, the u' v' values of CIE 1976 color space of the LED array are (0.1508, 0.5501), (0.3899, 0.4292) and (0.2293, 0.1496) for blue, purple and ultraviolet chips, respectively. A 65.07% sRGB gamut is achieved and uniformity of the illumination pattern is 0.905 as comparing with the theoretical simulation result of 0.914.

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