With the development of LED lighting technology, the average lighting efficiency of high-power LED street lights can reach up to 80lm/W, making the application of LED street lighting possible in most countries. LED lights, especially high-power LED street lights are impacting the traditional street lighting market at a rapid pace.
LED street lamps with power consumption more than 30W can be defined as high-power LED street lamps. The current street lighting standard is uniformity of road surface illuminance. The basic requirement of LED lighting products is 0.48 of this value. And the spot ratio should be 1:2. (1/2 center spot should reach up a lumen output of 25lux, and 15lux for 1/4 center spot, at least 4lux for spot 16 meters far away from center spot). Most lens materials selling on the market is improved optical materials, with a luminousness of 93%, can working within -38℃-90℃, without any ultraviolent rays. LED street lighting has good prospects new-born cities. Color temperature and other properties will not change with the adjustment of light intensities.
High-power LED street lights start to emerge in some large cities, such like New York, Tokyo, Paris, and Beijing. In order to strengthen the environmental protection awareness, designers are more willing to use them together with solar panels. The outland landscape property made it is possible for LED street lights using solar energy. Even those manufacturers who are not capable of producing solar panels still make LED street lights which can directly used with solar panels. These lamps are more likely related to intelligent technology. Light sensors are typically applied to measure the surrounding light intensity to decide a specific point to trigger these lamps. In the following sections, we will give some technical data of high-power LED street lights.
Lighting efficiency should be higher than 17%. (Amount of solar energy per square is 1000W, and the actual utilization is 170W)
LED street lamp lenses should have rectangular spots, using PMMA optical materials, with an luminousness higher than 93% and heat durable.
The average uniformity of road surface illuminance should be 0.48.
1/2 center spot should reach up a lumen output of 25lux, and 15lux for 1/4 center spot, at least 4lux for spot 16 meters far away from center spot.
Humidity adaptation should smaller than 95%.
Warranty: 2 years.