| Summary: | 碩士 === 國立臺南大學 === 電機工程研究所 === 99 === In this study, the street lamp with combining the multi-chip on board(MCOB) of LED light source and the freeform lens were proposed and simulated. In order to prevent two adjacent luminaries from generating strong brightness contrast on the road surface, i.e., the Zebra effect
(repeated bright and dark regions). We design a freeform lens which can provide that the light intensity is good batwing distribution with light intensity about 3000 cd at the middle and 7000 cd at 60 deg. This indicates that a uniform and wide illumination area on whole road surface
can be achieved. The uniformity values are 0.723, 0.866, and 0.875 for three basic placement of single-sided, zigzag, and opposite, respectively. These results suggest that the lamp installation numbers can be eliminated,
and can be reduced thermal management.
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