1. LED street lamps are mainly used for road lighting, such as main road, secondary road, Branch Road, factory, school, garden, city square, courtyard, etc;
2. To improve the output power and luminous flux, we need to further improve the epitaxial technology and chip technology of high-power white LED. In the secondary optical design, the radiation forms of LED include Lambert type, side emitting type, bat airfoil type and concentrating type. In the field of road lighting, according to the design experience, Lambert type and bat airfoil type are more suitable. Through the secondary optical design, the light range and photometric curve of LED meet the needs of road lighting;
3. The most common form of LED used in road lamps and lanterns is mainly in lamps and lanterns. Matrix LED is installed on an almost flat mounting surface (also a reflective surface). This design method is impossible to get good light distribution of lamps and lanterns.
