Method for operating a lighting device for a motor vehicle and lighting device for a motor vehicle

DE102019101710B4Active Publication Date: 2026-07-16HELLA GMBH & CO KGAA
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
HELLA GMBH & CO KGAA
Filing Date
2019-01-24
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing lighting devices with LED matrices or high-resolution headlights suffer from disturbing visual effects due to gaps in light distribution caused by failed LEDs or pixels, which can lead to reduced user acceptance despite meeting legal minimum requirements.

Method used

A method and device that adjust the brightness of adjacent non-defective pixels or sections to create a smooth transition from the failed pixel, minimizing the visibility of gaps by reducing brightness more for adjacent pixels closer to the failure and less for those further away, using control means to recalibrate the light distribution.

Benefits of technology

The method and device effectively reduce the visibility of gaps in light distribution, enhancing user acceptance by creating a more homogeneous illumination.

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Abstract

A method for operating a lighting device for a motor vehicle, which has light-controlling means or a plurality of light sources for the targeted generation of pixels of a light distribution (1), wherein, in the event of a failure of at least one pixel (2) of the light distribution (1) caused by a defect in a section of the light-controlling means or by a failure of one of the light sources, at least one non-defective section of the light-controlling means or at least one of the non-failing light sources is controlled in order to correct the light distribution (1), characterized in that the at least one non-defective section of the light-controlling means or the at least one of the non-failing light sources is controlled in such a way that at least one pixel (3, 4, 5, 6) of the light distribution (1), which is adjacent to the at least one failed pixel (2), is reduced in its brightness.
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