| 摘要 |
PROBLEM TO BE SOLVED: To provide a broadband, omnidirectional, multi-layer, dielectric reflector for an LED in a white light emitting device which provides both nearly 100% reflectivity across the visible spectrum of light and electrical insulation between a substrate and electrical circuitry used to power and control the LED.SOLUTION: 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. |
