How  improve the LED light efficiency and the light efficiency of the lighting system? ,

　　Traditional light source lamps generally use a reflecr  evenly distribute the luminous flux of a light source  the illuminated surface; while the light source of LED lamps is composed of multiple LED particles, by designing the illumination aspect, lens angle, and LED array arrangement of each LED Facrs such as the relative position of the illuminating surface can make the illuminated surface obtain uniform and satisfacry illuminance. The optical design of LED lamps is different from traditional light source lamps. How  use the characteristics of LED light source  improve the efficiency of LED lamps is a key facr that must be considered in the design.

　　(1) Illumination calculation of LED lamps

　　On the surface of the illuminated object, the luminous flux received per unit area is called illuminance, which is represented by E and the unit is lx. The simulation illuminance calculation in the early stage of lamp design is a key step in the light distribution design of LED lamps. Its purpose is  compare the actual requirements with the results of simulation calculations, and then combine the appearance and structure of the lamp, heat dissipation and other conditions  determine the LED in the LED lamp. Type, quantity, arrangement, power and lens, etc.

　　Since the number of LEDs in LED lamps often reaches dozens or even more than 100, for the case where multiple similar “point light sources” are combined and arranged gether, the point-by-point calculation method can be used  calculate the illuminance. The point-by-point calculation method is  calculate the illuminance on each LED calculation point one by one, and then perform the superposition calculation  obtain the tal illuminance.

　　(2) Light source luminous efficiency, lamp efficiency, light utilization rate and lighting system luminous efficiency

　　In fact, for users, what they care about is the illuminance of the area or space that actually needs  be irradiated.

　　The LED lighting system usually consists of LED array light sources, drive circuits, lenses, and heat sinks.

　　(3) Methods  improve the efficiency of LED lamps and the luminous efficiency of lighting systems

　　①Methods  improve the efficiency of LED lamps

　　Optimize the heat dissipation design.

　　B. Choose a lens with high light transmittance.

　　C. Optimize the arrangement of LED light sources inside the lamps.

　　②Methods  improve the light efficiency of LED lighting systems.

　　A. Improve the light efficiency of the LED light source. In addition  selecting high-efficiency LED light sources, the heat dissipation performance of the luminaire should also be ensured  avoid excessive temperature rise of the LED light source during operation, resulting in a serious drop in light output.

　　B. Select the appropriate LED lighting power supply pology  ensure that the driving circuit has the highest possible working efficiency, while meeting specific electrical and driving requirements.

　　Ensure the highest possible optical efficiency (that is, light utilization) through reasonable lamp structure and optical design.