近年來因照明需求與節能減碳的問題，加上半導體材料和技術的進步，以LED取代傳統光源已是目前趨勢，因此LED受到重視並廣泛應用於照明領域。但是LED照明一直存在演色指數不高，受熱衰減及色偏問題。本研究以多色LED建構全頻譜照明光源，以實現可調變且高演色指數之照明光。然而，LED發光特性容易受到溫度的影響產生變化，當LED接面溫度上升時，將導致壽命變短、發光效率下降和波長偏移，使得重建之照明光產生色差。本論文針對多色LED架構之光源提供一個修正法，可由溫度上升值ΔT計算多色LED光源的頻譜重建係數之變異量ΔC，同時提出以頻譜重建係數之變異量ΔC篩選出最佳LED以達到最有效率之溫度補償之效果。

In recent years, LED is widely used to replace the traditional lighting source due to the demands of energy efficiency and carbon-emission reduction with the advancement of semiconductor material technology. However, the white LED lighting is facing its bottlenecks in terms of low CRI, brightness decay, and color shifting caused from the rising of junction temperature.
In this research, to obtain the high color rendering index and the tunable illumination, multiple chip LEDs are used to construct the full spectrum lighting source. Unfortunately, the emitting characteristics of LED are easy to be interfered by variation of junction temperature. The increasing of LED junction temperature results in low efficiency, wavelength shifting, and lifetime degradation. In addition, it also produces color errors in light spectrum reconstruction.
This thesis provides a color correcting method for multiple chip LEDs lighting source. The variance of temperature (ΔT) is used to calculate the reconstruction coefficient variance (ΔC) of multiple chip LEDs systems. Moreover, the most efficient temperature compensation is developed by using reconstruction coefficient variance (ΔC) for LED selection optimization.

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