International Journal of Mechanical Engineering

At present, the development of Chinese car lighting technology has been very fast. At the same time, due to the rapid development in the automotive field and the fierce market competition, the demand of modern vehicle lighting system for luminous effect, safety characteristics and aesthetic performance is also becoming more and more high. Therefore, the design and processing of free surface reflector device and LED light control system in vehicle lamps is very critical. This is different from the design of traditional optical systems. The non-imaging optical design of the automotive light control system is also a disciplinary, repetitive design step. Like the traditional combination of parabolic mirror and light distribution lens, the combination of free surface and Fresnel principle and the lens can complete the function of convergence and light distribution at the same time, so the design of the rear fog lamp can effectively save the space for use and reduce the installation cost. Therefore, this paper analyzes the practical significance of the application of Fresnel lens in the design of LED vehicles based on Fresnel lens.

Fresnel lens; rear fog lamp; application; practical significance