In order to meet the requirements of uniform illumination of near-field on the lateral panels for double side LED light box and double side LED flat light, a free-form LED projector with cylindrical lens array is presented. According to the edge-ray principle based on the non-imaging optics theory, the surface shape of the projector is designed by using the direct method and overlapping, and the Lambert light source of the LED is redistributed under the action of the reflection rotation surface, refraction rotation surface and the cylindrical lens array. The cylindrical lens array free-form surface projection model of the lateral near-field uniform illumination is established, and TracePro software is used to simulate the designed model for ray tracing. The results show that the luminous efficiency is 96.03% without considering the reflection loss, and the uniform illumination with the projector of the lateral panel sized 240 mm×360 mm is 95.6%.