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US 11,598,506 B2Granted
Luminous film having microoptical structure
AssigneeLightnTec GmbH
InventorsLutz Nehrhoff von Holderberg, Florian Kall
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Abstract
A luminous film has a plurality of light-emitting diodes, a carrier layer and a light-conducting layer having microoptical structures which make it possible to deflect multidirectionally emitted light in a common emission direction of the luminous film, in order to allow uniform illumination of the luminous film surface with a low light-emitting diode population of the luminous film.
Claims18
A multilayer luminous film comprising:
- a plurality of light-emitting diodes;
- a conductor layer for the electrical connection of the light-emitting diodes;
- and
- a carrier layer;
- the multilayer luminous film having a micro-optical layer with micro-optical components for producing homogeneous illumination;
- the light-emitting diodes having a spacing of between 8 millimeters and 100 millimeters;
- the microoptical layer having a structured surface having repeating microoptical regions;
- the microoptical regions being predominantly rotationally symmetrical starting from an optical center, which lies precisely above a light-emitting diode;
- the microoptical regions having a larger area than the light-emitting diodes and the luminous film being designed to be rollable, the bending and/or rolling radius being between 1 cm and 10 cm.
6 more elements
Dependencies are inferred from the claim text.