Nonimaging optical concentrators using graded-index dielectric

M. Zitelli

doi:10.1364/AO.53.002256

Applied Optics
Vol. 53,
Issue 10,
pp. 2256-2266
(2014)
•https://doi.org/10.1364/AO.53.002256

Nonimaging optical concentrators using graded-index dielectric

M. Zitelli

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M. Zitelli, "Nonimaging optical concentrators using graded-index dielectric," Appl. Opt. 53, 2256-2266 (2014)

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Abstract

A new generation of inhomogeneous nonimaging optical concentrators is proposed, able to achieve simultaneously high optical efficiency and acceptance solid angle at a given geometrical concentration factor. General design methods are given, and concentrators are numerically investigated and optimized.

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Concentrator Model	Design Parameters	${\bar{η}}_{opt}$	$η_{FWHM}$	$A_{v}$	$M$ Factor
2D CPC	$n_{0} = 1.7$ , $θ_{\max} = 22.34 °$	0.363	0.985	0.361	1.592
2D EGC, linear index	$θ_{Tilt} = 19 °$ , $z_{grin}^{'} = 17.7 mm$ , $h = 0.70$ , external minimum	0.361	0.414	0.799	1.477
2D EGC, parabolic index	$θ_{Tilt} = 12 °$ , $z_{grin}^{'} = 24.5$ , $h = 1.0$ , external minimum	0.374	0.431	0.817	1.576
2D EGC, discrete linear index	$N_{layer} = 10$ , $θ_{Tilt} = 21 °$ , $z_{grin}^{'} = 18.7 mm$ , $h = 0.73$ , ext. min.	0.359	0.407	0.797	1.451
3D axisymmetric CPC	$n_{0} = 1.7$ , $θ_{\max} = 22.34 °$	0.0805	0.941	0.0751	1.413
3D axisymmetric EGC, linear index	$θ_{Tilt} = 19 °$ , $z_{grin}^{'} = 22.5 mm$ , $h^{2} = 0.79$ , external minimum	0.110	0.226	0.409	1.848
3D axisymmetric EGC, discrete linear index	$N_{layer} = 10$ , $θ_{Tilt} = 19 °$ , $z_{grin}^{'} = 22.5 mm$ , $h^{2} = 0.79$ , ext. min.	0.0973	0.179	0.447	1.597
3D crossed CPC	$n_{0} = 1.7$ , $ψ_{\max} = 22.34 °$ , $θ_{\max} = 22.34 °$	0.0729	0.781	0.0829	1.294
3D crossed EGC, linear index	$θ_{Tilt} = 19 °$ , $z_{grin}^{'} = 24.0 mm$ , $h^{2} = 0.90$ , external minimum	0.128	0.200	0.469	1.880
3D crossed EGC, parabolic index	$θ_{Tilt} = 12 °$ , $z_{grin}^{'} = 24.5 mm$ , $h^{2} = 1.0$ , external minimum	0.0902	0.221	0.309	1.363
3D crossed EGC, discrete linear index	$N_{layer} = 10$ , $θ_{Tilt} = 22 °$ , $z_{grin}^{'} = 25.3 mm$ , $h^{2} = 0.96$ , ext. min.	0.131	0.226	0.411	1.856

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