Introduction about Car Tail Light
Taillight
Tail lights are white lights that are placed as close as possible to the stern of the boat and show an uninterrupted light. A horizontal arc of light of 135° is displayed within 67.5° from directly behind the ship to each side. The visibility distances are 3 and 2 n mil as required by the captain respectively. It is used to display the dynamics of the own ship and identify the dynamics of other ships, and to judge the situation of the ship's cross encounter or overtaking.
Car tail light
Rear position light: a light used to indicate the presence and width of the vehicle when viewed from the rear of the vehicle;
Rear turn signal: a light used to indicate to other road users behind that the vehicle will turn right or left;
Brake Lights: Lights that indicate to other road users behind the vehicle that the vehicle is braking;
Rear fog lights: lights that make the vehicle more visible when viewed from behind the vehicle in heavy fog;
Reversing light: Lights the road behind the vehicle and warns other road users that the vehicle is or is about to reverse;
Rear retro-reflector: A device that indicates the presence of a vehicle to an observer located near the light source by reflecting light from an external light source.
Classification of car tail light sources
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.
Led
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.
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.