In some applications, homogenization of a light beam in the spatial and angular dimensions is required. Known integrator schemes such as rod and fly’s eye integrators merely provide integration in one dimension, and do not work properly for strongly inhomogeneous beams. In this contribution, we investigate whether and how light mixing can be improved by a combination of two integrators with the help of an optical system.
H. Rehn, H. Rehn,
"Combined spatial and angular mixing of inhomogeneous light beams", Proc. SPIE 10590, International Optical Design Conference 2017, 105901L (27 November 2017); doi: 10.1117/12.2286634; https://doi.org/10.1117/12.2286634