Red-Green-Blue Mini-LEDs Lighting Design with High Uniformity under Thin Form Factor

We present a design of a non-imaging system based on a ray-tracing methodology. This system is mainly made of polycarbonate, while part of its surface is coated with metal. The Zemax® optical simulation tool was used to calculate the optimal parameters of this system, such as heights, widths, and angles. This design aims to improve the light distribution uniformity of blended red-green-blue mini light-emitting diodes. Our simulation results show that this design can achieve 93% light distribution uniformity in a 36 mm × 36 mm area, and the height of this design is less than 5 mm.