图1.放置在LUMILEDS Rebel Amber LED[2]上折射/反射准直透镜的光线追迹示意图
为了评估混合透镜的准直性能,光的强度在距离LED 1m外的探测平面上评估。没有准直器时,检测到+/-50° FWHM的强度。添加准直器后,强度显著地减小到了+/-6° FWHM(图2)。
图2a 来自LUMILEDS Rebel Amber LED没有混合准直透镜的强度
图2b来自LUMILEDS Rebel Amber LED具有混合准直透镜的强度
[1] “New Report Explores the Global Industrial and Commercial LED Lighting Market to Be Propelled by Government Prohibition on the Use of Incandescent Lamps.” WhaTech. September 28, 2015. Accessed September 29, 2015.
https://www.whatech.com/market-research/consumer/97505-global-industrial-and-commercial-led-lighting-market-to-be-propelled-by-government-prohibition-on-the-use-of-incandescent-lamps.
[2] “LUXEON Rebel and LUXEON Rebel ES Colors.” LUMILEDS. Accessed September 29, 2015.
http://www.lumileds.com/products/color-leds/luxeon-rebel-color