From Event: SPIE Optical Engineering + Applications, 2017
While the use of the asymmetric compound parabolic concentrator (ACPC) for solar concentration has been addressed, documentation regarding the étendue and angular acceptance of the ACPC is absent from the literature. This paper delves into the 2D design of the ACPC and discusses its étendue and angular acceptance, offering a new design tool regarding such instances when symmetry is broken. It is found that unlike the compound parabolic concentrator (CPC) whose angular acceptance fills a symmetric ellipse, the ACPC’s angular acceptance fills an asymmetric ellipse in some cases, and a folded ellipse in others. Both cases are dependent on the maximum acceptance angles of the design. Ray tracing is utilized to confirm both the angular acceptance ellipses and étendue, as well as to offer a visual representation of the intensity distribution for asymmetric designs in both angular and phase space.
Melissa N. Ricketts, Roland Winston, and Jonathan Ferry, "Étendue and angular acceptance of the asymmetric compound parabolic concentrator (Conference Presentation)," Proc. SPIE 10379, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIV, 1037905 (Presented at SPIE Optical Engineering + Applications: August 06, 2017; Published: 19 September 2017); https://doi.org/10.1117/12.2276735.5581155568001.
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