不論是戶外照明、室內照明、戶外看板，甚至連手機背光源、LED顯示器及號誌燈，皆能夠在日常生活中看到LED的身影，進而衍生出許多LED的應用以及相關技術與學術探討。一般LED照明只能夠輸出單色光，倘若能夠利用RGB LED發光元件的加法混色理論加以改善，即可根據環境需求變化LED燈泡的色溫值。
本研究主要針對LED照明色溫品質檢測與補償作探討，利用RGB三晶獨立的LED進行混光調配來得到預期的目標色溫值，並透過積分球以及高精度光譜儀進行光源色溫量測。首先將LED照明模組(4×4陣列)單顆依序點亮RGB，量測該顆LED在最大灰階輸出時的三刺激值與色座標，再透過重心混光比例計算出混出目標色溫之色度值所需提供的RGB比例，重複動作至16顆LED完畢，對照模組全點亮時的色溫誤差，再對照至美國國家標準(ANSI)協會針對固態照明產品制定的色溫與色度指標。研究結果得知，在ANSI制定的八點色溫點下，單顆點亮在低色溫時最大色溫誤差不超過10K，在高色溫時最大色溫值不超過40K，而模組中16顆LED在補償後的最大色溫誤差為34.25K，最小色溫誤差為16.98K，皆符合ANSI訂定的誤差範圍。因此，本研究提出的色溫品質檢測及補償方法，確實能有效達到LED照明模組的色溫均勻性並提升其色溫品質。

Nowadays, whether outdoor lighting, indoor lighting, outdoor billboards, and even mobile phone backlight, LED display and signal lights, LED can be seen around everyone’s circumstances. And then it extends many LED applications, related technology and academic research. In general, LED illumination can just only output monochromatic light. If we can use the additive color mixing theory with RGB LED lighting devices to improve the monochromatic light ones, we can change the color temperature of LED lamps that depend on the environmental requirement.
This study focuses on the LED illuminant color temperature quality inspection and compensation. To get a desired color temperature, the independence of three crystal RGB LEDs is used to mix light, and color temperature qualities is inspected with an integrating sphere and a spectrometer. Firstly, the RGB of LED illumination module (4×4 array) is lighted in order of its coordinate. To mix the required target color temperature, the compensated RGB lighting ratio can be derived according to the mixed light formula with original RGB tri-stimulus of maximum grey level output value and RGB vertex coordinates. Then, repeat action after sixteen LEDs and module are measured. Finally, the color temperature and chrominance deviation are calculated between LED illumination module and ANSI. The experimental results from the 4×4 LEDs show that the deviation of the color temperature illumination standard by ANSI is less than 10K in low color temperature, and less than 40K in high color temperature for one piece of LED after compensation by using the proposed method. As sixteen LEDs of LED illumination module are lighted after compensation, the maximum color temperature deviation is 34.25K, and minimum is 16.98K for eight color temperature values, which are in compliance with the ANSI measurement tolerance. Thus, the color temperature quality inspection and compensation method in this study can really achieve the color temperature uniformity of a LED illumination module and enhance the qualities of its color temperature.

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