Variable diffuser pattern for improving color and luminosity uniformity

Abstract

Methods, systems, devices, and apparatuses are described. A variable diffuser pattern (VDP) may be applied to a substrate and configured to diffuse light from a light source (e.g., a light emitting diode (LED)), where the diffused light may have luminance uniformity and color uniformity measured at various distances from the light source. The VDP may include two or more different materials (e.g., different nanoparticle inks), and each material may have unique spectral reflectance and transmittance properties. For example, a first material may produce relatively more backscatter in red light wavelengths (e.g., as compared to blue and green light wavelengths), and a second material may produce relatively increased backscatter in blue light wavelengths (e.g., as compared to red and green light wavelengths). The VDP including the first and the second material may provide controlled scattering of light from the light source, resulting in uniform luminance and color of the scattered light.