Advancements in multi-projection system illumination and the challenges of coherent light sources

There are several aspects of optimizing multi projection system illumination. A main driver in the illumination performance are the light sources, their spectral characteristics, brightness and etendue. The impact of these characteristics on the architecture of illumination design and their implications for key performance metrics such as luminous flux and projectable color space is addressed. The transformative role of solid-state light sources, which have advanced the development of illuminations with high luminous flux and wide color spaces is stressed. The emergence of new challenges posed by the latest generation of coherent light sources is highlighted and advanced illumination design strategies to overcome them are presented.