Advanced nonrotationally symmetric reflector for efficient and uniform illumination of rectangular apertures

John C. Bortz; Narkis E. Shatz; Roland Winston

doi:10.1117/12.368242

6 October 1999 Advanced nonrotationally symmetric reflector for efficient and uniform illumination of rectangular apertures

John C. Bortz, Narkis E. Shatz, Roland Winston

Author Affiliations +

Proceedings Volume 3781, Nonimaging Optics: Maximum Efficiency Light Transfer V; (1999) https://doi.org/10.1117/12.368242
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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.

Citation Download Citation

John C. Bortz, Narkis E. Shatz, and 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); https://doi.org/10.1117/12.368242

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