Techniques in flowline optics: towards calculating étendue from flowlines

Alex Lehmann; Mark Keevers; Nicholas Ekins-Daukes

doi:10.1117/12.3028207

1 October 2024 Techniques in flowline optics: towards calculating étendue from flowlines

Alex Lehmann, Mark Keevers, Nicholas Ekins-Daukes

Proceedings Volume 13132, Nonimaging Optics: Efficient Design for Illumination and Concentration XIX; 131320A (2024) https://doi.org/10.1117/12.3028207
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

A technique for calculating étendue from flowlines is proposed for both Lambertian and non-Lambertian light fields. Hyperbolic curve fitting from flowline measurements is proposed as a means of extrapolating flowlines to the far-field for improved calculation of étendue. The technique is applicable to rotationally symmetric light fields, and to specific asymmetric light fields where analytic viewfactor calculations exist.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Alex Lehmann, Mark Keevers, and Nicholas Ekins-Daukes "Techniques in flowline optics: towards calculating étendue from flowlines", Proc. SPIE 13132, Nonimaging Optics: Efficient Design for Illumination and Concentration XIX, 131320A (1 October 2024); https://doi.org/10.1117/12.3028207

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