An application specific LED packaging module integrated with optical, cooling and powering functions

Light-emitting diodes (LEDs) modules integrated with multi-functions are essential to LED luminaires manufacturers. We demonstrated a 16W application specific LED packaging (ASLP) module integrated with optical, cooling and powering functions for road lighting. A lens design method for extended source was introduced briefly and a borosilicate glass freeform lens for the module was designed according to this method. Simulation results demonstrated that lighting performance of the ASLP module could meet requirements of road lighting very well. Moreover, system optical efficiency of the LED road lamp based on the ASLP modules was 19.4% higher than that of traditional LED road lamp. Y shape fins were designed for the heat dissipation of the ASLP module. Thermal performance of the module was checked and verified by thermal calculation and simulation. The junction temperature of LEDs was <90°C when ambient temperature was 35°C. Special designed structure made this ASLP module replaceable and easy to assembly.