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Development of Array-Lens for Multi-Color Chip-LED  

Choi, Byung-Ky (조선대학교 기계공학과)
Lee, Dong-Gil (한국생산기술연구원)
Jang, Kyeung-Cheun (한국생산기술연구원)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.3, 2007 , pp. 50-55 More about this Journal
Abstract
The purpose of this research is to enhance the luminance of the LED and to improve the implementation of color by mounting an array lens on the LED without special technology in process. The workmanship of key components considering the economical efficiency and the injection molding technology for high quality of the product are essential to achieve it. In this paper, the mold was computer-aided was designed and manufactured by CAM software (NX4) and high speed machining center. the applied final machining conditions were 3,000-5,000mm/min feed speed, 15,000-25,000rpm and ${\Phi}0.3mm$ ball end-mill. And the Flow analysis was performed using the mold flow software(MPI) in order to get uniformity of resin. Injection conditions acquired by the flow analysis and the injection experiment are as follows. The cylinder temperature is $220-260^{\circ}C$, the mold temperature is $70-80^{\circ}C$, the injection time is about 1.2sec, the injection pressure and velocity is each 7.8-14.7Mpa, and the injection velocity is 0.8-1.2m/sec.
Keywords
Away Lens; Injection Mold; Flow Analysis; Injection Pressure; Injection Time; Mold Temperature;
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