发明申请
US20140034986A1 BROADBAND DIELECTRIC REFLECTORS FOR LED WITH VARYING THICKNESS 有权
用于具有变化厚度的LED的宽带电介质反射器

BROADBAND DIELECTRIC REFLECTORS FOR LED WITH VARYING THICKNESS
摘要:
A broadband, omnidirectional, multi-layer, dielectric reflector for an LED in a white light emitting device provides both near 100% reflectivity across the visible spectrum of light, and electrical insulation between the substrate and the electrical circuitry used to power and control the LED. When a sealant material, having a higher index of refraction than air, is used to protect the LED and the accompanying electrical circuitry, an aluminum reflector layer or substrate is provided to make up for the loss of reflectivity at certain angles of incidence. The dielectric reflector includes two separate sections with two different thicknesses, a thinner section below the LED providing better heat conductivity, and a thicker section surrounding the LED providing better reflectivity.
信息查询
0/0