Producing uniform illumination within a rectangular area by using a nonimaging optic

Abstract

This paper proposes a new design method to create a novel optical element to generate uniform illumination within a rectangular area. Based on this model, an illuminated area is irradiated by two sets of rays, the first one irradiates the target plane after refraction from the top section of the lens and the second one irradiates from the reflection at the side profile of the lens and then refraction at the top part of the lens. The results show that a uniformity of over 90% can be achieved.

Evaluation of the uniformity of UVA LED illumination on flat surfaces: Discrete ordinate method, single axis, and surface scanning radiometry

“…Spatial uniformity measurements have also been conducted using a range of optics software packages, such as Zemax [ 16 ], LightTools [ 17 ], and TracePro [ 18 ]. Prior work has shown that these software packages can reliably represent the illumination patterns from a range of lamps and in turn, calculate the spatial uniformity.…”