Abstract
This paper presents a practical and effective reflective-type encapsulation module employing a high-power LED chip and a light concentrator with the advantages of high-performance and ultra-compactness. Linear-segment and cubic-spline (LSCS) synthesis method is proposed for the light concentrator design, the detailed of which is thoroughly investigated. Design results show that the reflective encapsulation module could not only reduce the irradiance non-uniformity from 28.72% down to 8.34% within the prescribed illumination region, but also minimize the optical dimension by 9.6%, which demonstrate both the effectiveness and robustness of the LSCS method. It is believed that there would be a huge market potential to commercialize this design.
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