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The vicious competition in the LED market price, the listing of a large number of substandard products has violated the real value of LED energy saving, long life, environmental protection, etc. How to distinguish the pros and cons of LED lamps and lanterns, we should start from the following aspects: 1. Look at the overall "power factor of lamps": low power factor indicates that the used driving power supply and circuit design are not good, which will greatly reduce the service life of lamps and lanterns.

In the overall consideration of the landscape LED lighting design of the building, the following points should be confirmed first: 1 viewing direction Buildings may be seen from different directions and angles, but generally, before starting the design, we must first decide on a specific direction as the main viewing direction. 2 distance

1. Substrate technology: LED substrate material; substrate structure; substrate polishing; substrate cutting; substrate doping; Substrate (substrate underlayment substratum) material (material) structure (structure formation) polishing (polishing) cutting (cut) doping (doping) 2. Epitaxy technology: epitaxy

According to its name, the electric light source mainly has two performance indicators of light and electricity. Of course, the performance indicators of these two aspects are closely related. However, as a light source, it is mainly the performance index of light, and the indicators of electricity often focus on its influence on light performance. (1) Luminous flux The luminous flux of the light source represents the luminous ability of the light source and is an important indicator of the light source. Light

According to the principle of light generation, electric light sources are mainly divided into two categories. A. One type of electric light source is based on thermal radiation as the principle of light radiation, including incandescent lamps and tungsten halogen lamps, all of which use tungsten filaments as radiators. This kind of light source is collectively referred to as thermal radiation light source, and it is still an important lighting source at present, with a large number of production. B. Another category is