Optical projection system

Abstract

The invention provides an optical projection system. The system comprises an illumination module, a light adjusting mechanism, an image array and a fly-eye lens, wherein the illumination module emitsa light beam for illumination; the light adjusting mechanism is used for adjusting the light beams to change the light beams into parallel light beams; the image array is provided with a plurality ofsub-images which are uniformly distributed and are the same; each of the plurality of sub-lenses can independently form a complete image on an imaging surface; the light beam carries a plurality of pieces of same to-be-displayed information after passing through a plurality of sub-images of the image array; the fly-eye lens is provided with a plurality of sub-lenses in one-to-one correspondence with the plurality of sub-images of the image array; and the light beam carrying the plurality of pieces of same to-be-displayed information is superimposed and projected into a final image through theplurality of sub-lenses of the fly-eye lens. The uniformity of projected images can be improved; the light source utilization efficiency can be improved; the number of used lenses can be reduced to simplify the structure, so that the overall weight is reduced, the overall size is reduced, and the miniaturization requirement is met.

Description

technical field [0001] The present application relates to technical fields such as mechanical engineering and vehicle projection lighting, and more specifically relates to an optical projection system based on microstructure elements. Background technique [0002] With the development of the automobile industry, the optical projection system has attracted more and more attention from the industry. For example, a vehicle-mounted projection system that has emerged in the automotive industry in recent years has the functions of lighting the floor and projecting the model or brand pattern of the car. It can project information such as the car logo on the ground. On the one hand, it can display the car brand On the other hand, it can play the role of lighting at night and reminding pedestrians and vehicles at the front and rear of the door to pay attention to safety. [0003] Traditional optical projection systems consist of multiple mirrors, which poses some problems. First of...

AI Technical Summary

Problems solved by technology

First of all, because the traditional optical projection system uses multiple lenses, the overall volume of the optical projection system is relatively large. In addition, multiple lenses will increase the overall weight of the optical projection system, which is not in line with the pursuit of miniaturization, Lightweight Application Trends

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