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US 2011/0085330 A1Published application
Led lighting unit having a structured scattering sheet
AssigneeBayer MaterialScience AG
InventorsHeinz Pudleiner, Günther Walze, Andreas Lyding
Life of this patent
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Abstract
The present invention relates to an LED lighting unit containing a scattering sheet consisting of at least one transparent plastic, which has light-guiding elements at least on the front side.
Claims14
A lighting unit, comprising:
- at least one light-reflecting surface;
- one or more light-emitting diode(s) (LED(s));
- and
- at least one scattering sheet made of at least one transparent plastic,
- the LED(s) being arranged in front of the at least one reflective surface and behind the at least one scattering sheet,
- wherein at least the front side of the scattering sheet comprises light-guiding structures consisting of a lens region and a convex compound parabolic concentrator (CPC) region.
3 more elements
Dependencies are inferred from the claim text.