Led spotlights are mainly illuminated by diodes, and their life span mainly depends on the solid-state LED light source and the driving heat dissipation part. Downlights are mainly used for civil lighting and engineering use. As for the light-emitting principle of led spotlights, the specifications and parameters used by civil and engineering companies, the editor will introduce below.
The luminous principle and characteristics of led spotlights
Led spotlight is a lighting fixture that is embedded in the ceiling and emits light. Led spotlight is a directional lighting fixture. Only its opposite side can receive light. The beam angle belongs to the condensed light, the light is concentrated, and the contrast between light and dark is strong. The illuminated object is more prominent, the lumens are higher, and the quiet environment is more set off.
Led spotlights are mainly illuminated by diode lighting. The lifespan mainly depends on the solid-state LED light source and the driving heat dissipation part. In 2012, the lifespan of led spotlights has reached more than 80,000 hours. With the continuous research and widespread use of LED technology, the driving In terms of heat dissipation, it has basically reached a relatively ideal state. Compared with ordinary halogen downlights, the life of commercially available high-quality LED spotlights basically reaches more than 80,000 hours.
Light-emitting principle: The terminal voltage of the PN junction constitutes a certain potential barrier. When a forward bias voltage is applied, the potential barrier drops, and the majority carriers in the P and N regions diffuse to each other. Since the mobility of electrons is much greater than that of holes, a large number of electrons will diffuse to the P region, which constitutes the injection of minority carriers in the P region. These electrons recombine with the holes in the valence band, and the energy obtained during the recombination is released in the form of light energy. This is the principle of PN junction light emission.