6 October 1999 Advanced nonrotationally symmetric reflector for efficient and uniform illumination of rectangular apertures
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Abstract
A requirement for a uniformly illuminated rectangular aperture is common in optical design, particularly for projection applications. We have previously presented an all-reflective design that provides high flux-transfer efficiency from a cylindrical source to a 1.5:1-aspect-ratio rectangular target, with target etendue equal to that of the source. That design used a numerically optimized nonrotationally symmetric reflector having a star-like cross-section combined with a light tunnel having a constant rectangular cross-section. In this paper we present a more advanced design in which the constant-cross-section light tunnel is replaced with one having a numerically optimized cross-sectional geometry that varies as a function of position along its length.
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John C. Bortz, John C. Bortz, Narkis E. Shatz, Narkis E. Shatz, Roland Winston, Roland Winston, } "Advanced nonrotationally symmetric reflector for efficient and uniform illumination of rectangular apertures", Proc. SPIE 3781, Nonimaging Optics: Maximum Efficiency Light Transfer V, (6 October 1999); doi: 10.1117/12.368242; https://doi.org/10.1117/12.368242
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