Vehicle Light Unit Flicker Reduction via Source Merging
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Solution Overview
Problem
Existing vehicle light units, such as pixel headlights, face challenges in reducing flicker effects, especially in low brightness regions, due to limited brightness resolution and increased data transfer complexities with a high number of light sources.
Innovation Solution
Combining multiple light sources into controllable light source units, allowing for increased brightness levels and reducing flicker effects by activating them together and setting individual brightness levels, which enhances brightness resolution and optical quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high number of light sources are used in pixel headlights, then the light distribution resolution is improved, but flicker effects occur in low brightness regions due to limited brightness levels per light source
Solution Approach 1:
The patent combines multiple light sources into groups called light source units, where each unit can be controlled as a single entity with multiple brightness levels. This merging approach allows the system to achieve higher effective brightness resolution by pooling the output of multiple individual light sources, thereby eliminating flicker effects in low brightness regions while maintaining the high number of light sources for fine light distribution control.
2Measurement precision
If individual control of each light source is implemented, then the light distribution precision is improved, but the data transfer complexity increases significantly
Solution Approach 1:
The patent segments the large number of individually controllable light sources into smaller groups or light source units. Each unit can be controlled collectively, reducing the number of individual control signals required. This segmentation maintains the precision of light distribution control while significantly reducing data transfer complexity by allowing batch control of multiple light sources within each unit.
Solution Approach 2:
By merging multiple light sources into controllable units, the system reduces the total number of control channels needed. Instead of controlling each light source individually, the control unit can activate entire groups simultaneously, thereby reducing data transfer complexity while preserving the ability to create precise light distributions through selective activation of different units.
3Measurement precision
If multiple brightness levels are provided for each light source, then the brightness resolution is improved, but the control complexity and data transfer requirements increase
Solution Approach 1:
The patent merges multiple light sources into light source units that can be controlled with multiple brightness levels. Instead of providing multiple brightness levels for each individual light source (which would create excessive control complexity), the system provides multiple brightness levels for each unit, achieving effective brightness resolution through the combined output of multiple sources within each unit.
Data Source
AI summary
A method for the operation of a vehicle light unit is provided. The light unit includes at least one light source module having several light sources and a control unit coupled to the light source module. The light sources each include a predetermined number of brightness levels. A predetermined number of light sources are combined by the control unit to form at least one controllable light source unit. In order to set a light distribution, the light sources that form the at least one light source unit are activated together and a brightness level of each light source of the at least one activated light source unit is set individually.