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Freeform Lens Design to Achieve 1000X Solar Concentration with a Parabolic Trough Reflector

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Abstract

Parabolic trough mirrors for solar thermal generation cannot produce the high concentration required for CPV. We describe a freeform lens array with toroidal symmetry which intercepts the low-concentration line focus to produce elongated high-concentration foci.

© 2014 Optical Society of America

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Design of a null-screen for characterizing a parabolic trough solar concentrator

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