A high accurately theoretical analysis for high uniformity illumination distribution on the ceiling of indoor lighting LED system based on the super-positions is proposed and performed. Starting from the non-uniform illumination distribution of two LED sources. the dependences of the uniformity ratio on the height of the LED source and the length of the ceiling are investigated. The l... https://www.roneverhart.com/Cyspera-Pigment-Corrector-1-75oz-52ml/