Illumination device with photon localized supply area and distribution of photons

Abstract

The invention relates to a lighting device (DE) comprising electroluminescent diodes (D1-D4) and a flat light guide (GL) comprising Between the guide part (PG). The input face (FE) supplies photons to the guide part (PG), and the output face (FS) sends the guided photons to the outside. Said electroluminescent diodes (D1-D4) are all arranged opposite respectively to an input zone (ZE1-ZE4) defined in a supply zone (ZA) of said input face (FE), said supply zone being in relation to said Opposite a first output zone (ZS1) of the output face (FS), said input zone being configured for distributing the received photons in a predefined angular sector (SA1-SA4) so ​​that at said output face (FS) A decreasing luminous intensity from said first output zone (ZS1) is induced on a second output zone (ZS2), which is located next to said first output zone (ZS1).

Description

technical field [0001] The invention relates to a lighting device, and more precisely to a lighting device comprising electroluminescent diodes which supply photons to a light guide and serve to ensure at least one lighting function. [0002] A "lighting device" is here understood to be a lighting device which can ensure at least one lighting function for lighting or signaling or (optionally decorative) lighting effects. Background technique [0003] In some fields, such as the field of vehicles (optionally of motor type), lighting devices are used to produce a light strip with a light from a first end of an output face to this same output face (with the The increasing strength of the second end portion opposite to the first end portion. This is, for example, when the lighting device is used to ensure night or day signal functions (brake lights, turn signals, reversing lights, position lights (or side lights or parking lights), or daytime running lights (or DRL "Daytime ru...

AI Technical Summary

Problems solved by technology

[0006] The first solution imposes a large number of electroluminescent diodes and leads to a higher probability of inversion of the electroluminescent diodes in terms of assembly and thus a higher probability of having light emitting devices that do not emit Strictly increasing luminous intensity

Also, this complicates the management of storage and supply on the assembly line

[0007] The second solution imposes the need to use control-strength electronic circuits, which increases bulk and cost

[0008] Furthermore, both solutions impose the need to use a large number of electroluminescent diodes in order to uniformly supply the entire input face of the light guide, which proves to be disadvantageous in terms of weight, volume and power consumption, and multiplies the probability of failure

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