In this paper, the rst issue presented and analyzed by several experiments is the in- uence of the distance between phosphor layers in the dual-layer and triple-layer remote package on luminous ux and color rendering property. During the simulation, it was realized that it was possible to create a suitable distance to create higher quality white light-emitting diodes (WLEDs) by adjusting the distance between the phosphor layers. | VOLUME 4 ISSUE 2 2020 June Selection of Remote Phosphor Led Packages for Improving Luminous Flux 1 1 2 Ming Jui CHEN Hsiao-Yi LEE Doan Quoc Anh NGUYEN 3 4 Thi Phuong Loan NGUYEN Van Tho LE 1 Department of Electrical Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan 2 Power System Optimization Research Group Faculty of Electrical and Electronics Engineering Ton Duc Thang University Ho Chi Minh City Vietnam 3 Faculty of Fundamental 2 Posts and Telecommunications Institute of Technology Ho Chi Minh City Vietnam 4 Institute of Tropical Biology Vietnam Academy of Science and Technology Ho Chi Minh City Vietnam Corresponding Author Doan Quoc Anh NGUYEN Email nguyendoanquocanh@ Received 19-Sep-2019 accepted 03-Feb-2020 published 30-Jun-2020 DOI http Abstract. In this paper the rst issue presented timal structure of WLED in improving luminous and analyzed by several experiments is the in- e ciency and color rendering index. uence of the distance between phosphor layers in the dual-layer and triple-layer remote pack- age on luminous ux and color rendering prop- Keywords erty. During the simulation it was realized that it was possible to create a suitable distance to Multi-chip white LEDs remote phosphor create higher quality white light-emitting diodes package luminous e cacy color render- WLEDs by adjusting the distance between the ing index. phosphor layers. According to the study results mm is the most reasonable distance between two phosphor layers so that the performance of the multi-chip white light LED MCW LED can get the best optimal e ect. Through a series 1. Introduction of experiments it has been proved that the ef- ciency of the two-layer structure gives optical Due to the quick development in digital illumi- properties higher than the three-layer structure nation market traditional lighting sources be- related to distance. The highest achievable lu- come completely obsolete .
