本研究設計一種新型波長可調變的LED光學引擎，用來改善傳統光生物反應器(photobioreactors, PBRs)所使用的單一波長光源。
此波長可調之光學引擎包含了R、G、B三原色及白光的LED光源、耦合透鏡和光纖。其中，耦合透鏡的設計是使用配光曲線映射法(LIDC Mapping)。配光曲線映射法可以利用光源與目標面的配光曲線之間角度映射來簡化傳統設計透鏡所需的計算式。所設計出的耦合透鏡，可以用來增加光源和光纖入口之間的耦合效率。一般而言，由於微藻對於溫度變化很敏感，而光源產生出的熱能會影響微藻的生長，所以需要另外提供空調維持環境溫度。因此，本研究設計並製作出可擺放在室外的光波長可調變之光學引擎，利用耦合透鏡使光線聚集進入光導中，並藉由光導傳遞到光生物反應器(PBRs)來培養微藻。
由實驗證實，在單位時間內，使用波長可調變LED光學引擎養殖，其微藻生物質量是使用LED白光組的1.66倍。因此，波長可調變LED光學引擎能提供任意微藻的理想光譜，使微藻在單位時間內的生物質量將能大幅增加。

The thesis present a novel full wavelength modulation LED (FWM-LED) light engine to improve traditional photobioreactors(PBRs) of single wavelength.
The FWM-LED light engine consists of RGBW LED light sources, coupling lens, and optical fibers. The coupling lens is designed using symmetrical luminous intensity distribution curves, LIDC Mapping, which computing light distribution curve and light energy mapping. This LIDC mapping method can simplify our design into correspondent with the LIDC angles of light sources and target. It is for fiber coupling lens, which is increasing the efficiency of coupling between entrance of fiber and RGBW light sources. In general, temperature could affect alga’s growth either, so providing air condition system to helping heat-dissipating is needed. Therefore, this study design and fabricate the FWM-LED light engine in outdoors then light would pass throughout the coupling lens. The bendable fiber could guide the light into the PBRs providing luminance.
Experimentally observed the biomass of case using FWM-LED light engine are 166% higher than the case only providing white light. Therefore, the FWM-LED light engine can provide spectrums near to the ideal for microalgae to enhance the biomass increasing remarkably in a unit period cultivation.

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