Hella Gmbh & Co Kgaa

Juergen Griebel

Robin Hofner

Heiko Schoene

Ana Bizal

Simon Luetzelschwab

Roland Schwarz

Christian Nutto

Kai Saaler

To allow an easily producible lighting device that manages with few components and enables an efficient, desired light distribution in an interior space, the provided method and device includes a light guide with a longitudinal transport section and at least one transverse transport section. The longitudinal transport section has at least one light entry surface, arranged transversely with respect to the longitudinal extension of the longitudinal transport section, for coupling light into the longitudinal transport section, and a light exit section along the longitudinal extension. The transverse transport section has a flat design, and is connected to the longitudinal transport section at least one first narrow side. The transverse transport section also has secondary deflection elements at which the coupled-in light is deflected in such a way that the light exits at the opposite broad sides.

Lighting device for a vehicle interior, method for producing same, and interior fitting part comprising such a lighting device

A method for producing a lighting device and a lighting device, comprising a flat light guide extending in a z-direction, wherein the light guide has a thickness, a back side, a front side and circumferential narrow sides, and scattering particles are arranged in its volume. A reflector is arranged at the back of the light guide and at least one light source is optically connected to the light guide for coupling light. Furthermore, the lighting device has a surface coating. In order to provide homogeneous illumination of the interior and a compact lighting device, the surface coating has a light transmission starting from the at least one light source in the z-direction, which increases to the extent that the curve of the light intensity of the at least one light source decreases and the light guide is formed by cohesive back-injection of a carrier foil with the surface coating.

Lighting device with light guide and surface coating with increasing light transmission

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Steinen, Germany

Juergen Griebel