LED DownLights Principle And Characteristics

- Dec 20, 2018-

The LED downlight is a type of lighting fixture that is embedded in the ceiling and is light-emitting. LED downlights are directional lighting fixtures, only the opposite side of which can receive light, the beam angle is concentrated, the light is concentrated, and the contrast between light and dark is strong. More prominent objects, higher lumens, and a quiet atmosphere.


    LED downlights are mainly illuminated by diode light. The life depends on the solid LED light source and the heat sink. In 2012, the life of LED downlights has reached more than 80,000 hours. With the continuous research and common use of LED technology, it is driven. And the heat dissipation aspect has basically reached a relatively ideal state. Compared with the ordinary halogen downlight, the commercially available high quality LED downlight has a life expectancy of more than 80,000 hours.


    Principle of illumination: The terminal voltage of the PN junction constitutes a certain barrier. When the forward bias voltage is applied, the barrier decreases, and the majority carriers in the P and N regions diffuse toward each other. Since the electron mobility is much larger than the hole mobility, a large amount of electrons diffuse into the P region, which constitutes injection of minority carriers in the P region. These electrons recombine with the holes on the valence band, and the energy obtained during recombination is released as light energy. This is the principle of PN junction illumination.


    LED downlight features: to maintain the overall unity and perfection of the building decoration, without destroying the setting of the lamp, the light source hides the interior of the building decoration, no exposure, no glare, and the visual effect of the person is soft and uniform.