Design of fly-eye lens for laser display

Abstract

It is an important research subject for the optical system of laser display on how to decrease the size of the optical system and improve the lighting effect of the laser source. The optical system design of the laser projector is mainly considered from these two aspects, and it can be found that when the size of the whole fly-eye lens and the focal length of the single fly-eye are certain, more arrays of the fly-eyewill be useful to increase the light effect and decrease the size of the optical engine. The lighting effect of the illumination beams with different numerical apertures and tracing 40 000 light lines of the optimized fly-eye lens show that the transmittance can reach about 92.5% with almost no stray light and scattered light.