Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Armin Berger

Ciro Piermatteo

Rainer Hagen

Vincenzo Taravella

Gianmaria Malvestiti

Jan Helmig

Torsten Thust

Marius Rogowski

Thorsten Schulz

A lighting unit which includes a multilayer body and at least a first light emitting diode (LED) light source. The multilayer body includes, in sequence, a carrier layer of a black or gray translucent thermoplastic composition, a stone layer with an average thickness of 2 mm of less, and a transparent thermoplastic layer with an average thickness of 1 mm to 6 mm. The LED light source is disposed facing at least one lateral edge of the transparent thermoplastic layer, such that light from the LED light source is guided within the transparent thermoplastic layer.

LED lighting unit with multi-layer bodies having a carrier layer, a stone layer, and an edgelit transparent layer

The present invention relates to LED lighting elements comprising translucent mouldings composed of polycarbonate-based moulding compounds, comprising a colourant mixture, carbon black, scattering additive and optionally white pigment, as used, for example, as covers with a day/night design. Through combination with one or more RGB-LEDs, it is possible to achieve surprising colour effects in night design with presence of a deep gloss effect in mouldings that are black and grey in day design.

LED lighting elements comprising molded parts made of translucent polycarbonate compositions having a deep gloss effect

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Langenfeld, Germany

Armin Berger