LED ceiling downlight manufacturer? How to distinguish between good and bad lamps

Evaluating the quality of LED lamps mainly depends on several parameters:

1, light attenuation, light attenuation of good LED lamps 25,000 hours ago.

2. Light efficiency, namely lumens per watt, in LM/W, reflects the energy-saving performance of lamps. The better the energy saving, the higher the light efficiency. At present, the light efficiency of LED is similar to that of compact fluorescent lamp. With the improvement of LED light efficiency, Kerui may mass-produce 186lm/w light source this year, and supply high-power DC-DC converter, DC booster, 36V/48V/60V electric vehicle inverter, intelligent DC converter for electric vehicles and 24V-72v electric vehicle controller from stock. ...

3. The light source is high-power LED, straw hat lamp or piranha LED; LED lighting uses high-power LED as light source, which is expensive; Straw hat lamp or piranha LED is very cheap and not suitable for lighting.

4. Driving power supply. A good driving power supply can ensure the life of the whole lamp. The theoretical life of LED is 6.5438+10,000 hours, while the life of general driving power supply is less than 6.5438+10,000 hours. In order to ensure the life of the whole lamp, the driving power supply is also a key link; On the other hand, LED must be driven by constant current. If low-cost constant voltage driving is adopted, the service life of LED will be shortened. As an ordinary consumer, how to identify the quality of LED driving power supply? Look at several parameters, light attenuation, life, light efficiency and warranty period. The quality of LED lamps produced by manufacturers who dare to provide long-term warranty is better.