As people become increasingly conscious of energy saving enhancements , the industry increasingly concerned about the environmental impact of energy consumption. Energy consumption in a variety of ways , and according to statistics , up to 20-22% of the energy used for lighting. Improve the efficiency of energy use in lighting applications, as well as to further reduce their energy consumption , helping to reduce carbon dioxide emissions , creating a greener world. Therefore , energy-efficient LED lighting is becoming a focus of the industry contested .

From the point of view of applications , LED lighting covering residential lighting , industrial lighting , street lighting and restaurants , retail and service industries , such as different types of lighting . From the power level , in addition to low- power lighting , including high-power area lighting , typical applications such as LED lights , LED wall washer , LED exterior wall lights , LED tunnel lighting , LED street lighting, parking and public safety LED lighting , industrial and retail lighting, outdoor LED lighting, and low ceiling , high ceiling , freezer / refrigerator and a parking garage and other indoor LED lighting.

There are many challenges of high-power area lighting , such as lamps may be difficult to close , may pose a security problem when the light source fails, there are a variety of outdoor extreme environmental conditions. Also , not to be overlooked is applied to an existing high-power area lighting sources ( such as metal halide , high pressure sodium lamps , linear fluorescent and compact fluorescent lamps ) , there are many limitations, such as high pressure sodium poor color rendering (CRI about 22 ) , the higher the typical metal halide lamps loss ( 40% ) and which from the start to the brightness of the light-emitting elapsed time to complete may take up to 10 minutes , poor cold temperature performance of linear fluorescent lamps , compact fluorescent lamps are more start-up speed slow.

On the other hand , with the continuous improvement led lamps in terms of performance and cost , etc. , are increasingly used in high-power area lighting , and traditional light sources do not have the advantage, as per lumen of light emitted less power consumption , controlling the direction of a better , better color quality , environmental protection , and which can be opened and closed more easily controlled , and thus to facilitate the automatic detection of changes in the brightness of ambient light ; addition , LED ‘s better reliability , which will help to reduce maintenance costs and The overall cost of ownership.