Do you know what types of car taillights are available?

1. Incandescent light source

Incandescent lamp is a kind of thermal radiation light source, which relies on electric energy to heat the filament to incandescent and emit light, and the light emitted is a continuous spectrum. The traditional car taillight with incandescent light source is mainly composed of four parts: incandescent light source, single parabolic reflector, filter and light distribution mirror. Incandescent lamps are simple in structure and easy to use, and are the most commonly used light sources, with stable output and little change with ambient temperature.

2. Light Emitting Diodes

The principle of the light-emitting diode is that under the forward bias of the junction diode, the electrons in the N region and the holes in the P region pass through the PN junction, and the electrons and holes recombine to emit light.

3. Neon light source

The light-emitting principle of the neon light source is to apply an electric field at both ends of the discharge tube filled with inert gas to generate continuous discharge. In this process, the excited noble gas atoms release photons and emit light when they return to the ground state. Filling different noble gases can emit light of different colors.

For BMW G20 Tail Light 2020 year