In addition to the front high beam, low beam, headlights, and small lights, a typical car also has a set of anti fog lights in inconspicuous places at the back of the car, including the driving lights and brake lights. Rear fog lights for vehicles refer to red signal lights installed at the rear of vehicles in low visibility environments such as fog, rain, or dust, with a higher luminous intensity than taillights, to make it easier for other road traffic participants behind the vehicle to detect.

The filament of the light source is designed at the focal point of the parabolic surface of the reflector, and after reflection by the reflector, a beam parallel to the optical axis is formed and emitted. The light distribution mirror diffuses and refracts the light beam to form a wider horizontal beam, and makes its light shape and illuminance meet regulatory requirements. The light shield inside the front fog lamp is designed to block the light emitted by the filament towards the upper part of the reflector, creating a clear cut-off line for light distribution, that is, dark at the top and bright at the bottom. Try to keep the visible area in the upper part of the light distribution shape as dark as possible, while the horizontal diffusion angle on both sides of the lower bright area should be 50 °, forming a horizontal bright area to meet the requirements of not dazzling but providing good lighting conditions for safe driving.

The anti fog lamp is composed of laser diodes located at the rear of the vehicle. In high visibility conditions, the fan-shaped light will emit a clear signal to the rear vehicle, and the red line formed by the beam of light after touching the road surface will warn the rear vehicle. The light seen by the driver of the rear vehicle at a certain distance looks like a "stop line". In low visibility conditions such as rainy and foggy days, the laser beam emitted by the rear fog lights can penetrate raindrops, and the light seen by the driver behind is like a red triangle, used to warn to maintain a safe distance. This type of laser rear fog light may become a new trend in active safety defense in the near future.

Car lights are described as the eyes of cars. They are key parts of cars that integrate functions...Car lights are described as the eyes of cars. They are key parts of cars that integrate functions...Car lights are described as the eyes of cars. They are key parts of cars that integrate functions...