为进一步提高LED路灯的散热,降低模组的温升,通过对石墨烯材料进行导热结构设计,形成石墨烯高散热碳塑合金散热器,再对其进行光学设计和电路设计,形成50 W LED路灯模组。实测结果表明:50 W的LED路灯模组工作时,温度降低至50.8℃,既保障...为进一步提高LED路灯的散热,降低模组的温升,通过对石墨烯材料进行导热结构设计,形成石墨烯高散热碳塑合金散热器,再对其进行光学设计和电路设计,形成50 W LED路灯模组。实测结果表明:50 W的LED路灯模组工作时,温度降低至50.8℃,既保障LED模组的寿命,也降低光衰,可实现光效高达124.5 lm·W-1。展开更多
Proposed and demonstrated is a novel computer modeling method for high power light emitting diodes(LEDs). It contains geometrical structure and optical property of high power LED as well as LED dies definition with it...Proposed and demonstrated is a novel computer modeling method for high power light emitting diodes(LEDs). It contains geometrical structure and optical property of high power LED as well as LED dies definition with its spatial and angular distribution. Merits and non-merits of traditional modeling methods when applied to high power LEDs based on secondary optical design are discussed. Two commercial high power LEDs are simulated using the proposed computer modeling method. Correlation coefficient is proposed to compare and analyze the simulation results and manufacturing specifications. The source model is precisely demonstrated by obtaining above 99% in correlation coefficient with different surface incident angle intervals.展开更多
文摘为进一步提高LED路灯的散热,降低模组的温升,通过对石墨烯材料进行导热结构设计,形成石墨烯高散热碳塑合金散热器,再对其进行光学设计和电路设计,形成50 W LED路灯模组。实测结果表明:50 W的LED路灯模组工作时,温度降低至50.8℃,既保障LED模组的寿命,也降低光衰,可实现光效高达124.5 lm·W-1。
基金The"863"Project of National Ministry of Science and Technology(2006AA03A175)
文摘Proposed and demonstrated is a novel computer modeling method for high power light emitting diodes(LEDs). It contains geometrical structure and optical property of high power LED as well as LED dies definition with its spatial and angular distribution. Merits and non-merits of traditional modeling methods when applied to high power LEDs based on secondary optical design are discussed. Two commercial high power LEDs are simulated using the proposed computer modeling method. Correlation coefficient is proposed to compare and analyze the simulation results and manufacturing specifications. The source model is precisely demonstrated by obtaining above 99% in correlation coefficient with different surface incident angle intervals.