The biggest feature of LEDs for lighting is the function of directional light emission, because almost all power LEDs are equipped with reflectors, and the efficiency of such reflectors is significantly higher than that of lamps.
In addition, the efficiency of the self-reflector has been included in the detection of the light efficiency of the LED.
Road luminaires using LEDs should use the directional emission characteristics of LEDs as much as possible, so that each LED in the road luminaires directly emit light to each area of the illuminated road, and then use the auxiliary light distribution of the luminaire reflector to achieve Very reasonable comprehensive light distribution of road lamps.
It should be said that road lamps must truly meet the requirements of CJJ45-2006 and CIE31 and CIE115 standards for illuminance and illuminance uniformity, and the three-time light distribution function in the luminaire can be better realized. The LED with a reflector and a reasonable beam output angle itself has a good primary light distribution function.
