Proceedings PaperSystem design of a LED based gobo projector
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In the contribution we discuss the relationship between etendue and luminous flux of gobo projectors and its implications on illumination design and system architecture. On the basis of a given projector specification, a suitable LED type can be chosen and the number of needed LEDs and the necessary system etendue can be calculated. In a next step, we show how to design a suitable illumination system with primary and secondary optics and possibly including a homogenizer. Furthermore, implications for the design of the projection lens are discussed.