Vehicle Headlight Pivotable Light Module

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Solution Overview

Problem

Conventional vehicle headlights have complex structures that lead to decreased homogeneity of light functions from inner to outer areas, requiring complex shading and segment activation/deactivation to achieve optimal illumination, which increases structural complexity and vibration issues.

Innovation Solution

A headlight design featuring a pivotable light module with a matrix of individually controllable light sources and refracting elements for both high and low beams, allowing for mechanical pivoting to optimize illumination coverage and reduce structural complexity by integrating high and low beams in a single module, with an electric drive and control system for precise adjustment and object detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional headlights use separate modules for high beam and low beam with shading mechanisms, then the illumination can be adjusted for different driving conditions, but the structural complexity increases and light homogeneity decreases

Engineering Contradiction:
Improveillumination adjustmentVSAvoidstructural complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines both high beam and low beam light sources, along with their respective refractive elements and control systems, into a single integrated light module. This merging eliminates the need for separate modules and reduces overall structural complexity while maintaining the ability to provide different illumination patterns through electronic control of individual light sources.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single light module is designed to perform multiple functions by selectively activating different light sources and refractive elements. The module can generate both high beam and low beam patterns, as well as intermediate patterns, by controlling which light sources are active and how the refractive elements are positioned, replacing the need for separate dedicated modules.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If conventional headlights use targeted shading to adjust illumination areas, then specific areas can be masked, but the homogeneity of light functions decreases from inner to outer areas

Engineering Contradiction:
Improvearea maskingVSAvoidlight homogeneity
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The light module contains multiple individually controllable light sources arranged in a matrix pattern, allowing selective activation of specific segments or groups of light sources. This segmentation enables precise control over which areas are illuminated without requiring physical shading elements, thereby maintaining light homogeneity while achieving area-specific illumination control.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs dynamic control of light source activation and refractive element positioning to adjust illumination patterns in real-time. Instead of static shading masks that create non-uniform light distribution, the system dynamically selects which light sources are active and adjusts refractive element positions to maintain homogeneous light distribution across the illuminated area while achieving the desired area masking effect.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If conventional headlights use multiple separate modules, then different light functions can be generated, but the number of parts increases and costs increase

Engineering Contradiction:
Improvelight function generationVSAvoidnumber of parts
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent integrates multiple light sources, multiple refractive elements, and their control systems into a single light module assembly. This merging reduces the total number of parts and simplifies the overall headlight structure while maintaining the capability to generate different light functions through electronic control and mechanical adjustment within the integrated module.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single light module is designed with universal functionality to generate various light patterns (high beam, low beam, cornering lights, etc.) by selectively activating different combinations of light sources and adjusting refractive elements. This multi-functionality within a single module eliminates the need for multiple separate modules, reducing part quantity and assembly complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This design enhances light homogeneity, reduces structural complexity and vibration, and improves motor controllability, ensuring better illumination coverage and safety by allowing precise adjustment and masking of areas, such as oncoming vehicles, through segment activation and deactivation.

Implementation Method 1

at least one refractive element is assigned to each of the light sources to generate a segmentally activatable high beam

Methodology Applied
Scientific EffectRefraction: Refraction

Implementation Method 2

the light module comprises at least one additional light source to which at least one further refractive element is assigned to generate a basic light distribution

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentEP3668751B1Headlight for a vehicle
Publication Date: 2022.08.10 VOLKSWAGEN AG
  • EP3668751B1 patent drawingFigure 1
  • EP3668751B1 patent drawingFigure 2
  • EP3668751B1 patent drawingFigure 3

AI summary

The invention relates to a headlight (10), to a lighting system (54) and to a motor vehicle (52) having the headlight (10), wherein the headlight (10) combines a full beam matrix (20) and a dipped light in a common pivotable lighting module (18).