Light Module With Shared Wavelength Conversion For Headlights

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Solution Overview

Problem

Traditional vehicle headlights are bulky, costly, and complex due to multiple light modules requiring significant adjustment for various lighting functions, often producing non-uniform light beams with color variability and inefficient power usage.

Innovation Solution

A light module with a single wavelength conversion device and optical projection system, utilizing two light radiation sources with scanning systems to produce uniform light beams, reducing bulk and complexity, and allowing for different source configurations without mechanical adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple light modules are used to provide sufficient light power for different lighting functions, then the lighting functionality is improved, but the device bulk and complexity increase significantly

Engineering Contradiction:

Improvelighting function versatilityVSAvoidheadlight structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple light modules into a single integrated module by sharing the optical projection system and wavelength conversion device between multiple light sources. This consolidation maintains the ability to produce different lighting functions (low beam, high beam, sidelight) while significantly reducing structural complexity and bulk.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shared optical projection system and wavelength conversion device serve multiple light sources simultaneously, enabling a single module to perform multiple lighting functions. The system can selectively activate different light sources to provide various beam patterns and intensities, achieving multi-functionality without proportional increase in complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If multiple light modules with individual wavelength conversion devices are used, then each module can be independently controlled, but the manufacturing cost and design complexity increase

Engineering Contradiction:

Improvemodule control independenceVSAvoiddesign and assembly simplicity

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

Multiple light sources share a common wavelength conversion device and optical projection system, reducing the number of components that need to be manufactured and assembled. This shared architecture simplifies production while maintaining independent control capability through electronic switching of individual light sources.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If laser light sources with scanning systems are used to form directional beams, then adaptive lighting functions are achieved, but the power efficiency decreases due to underpowering to avoid glare

Engineering Contradiction:

Improveadaptive beam controlVSAvoidlaser power utilization efficiency

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent applies different power levels to different light sources within the same module based on their specific functions. The first light source can operate at higher power for functions requiring intense directional beams, while the second light source operates at lower power for functions requiring diffuse illumination, optimizing overall power efficiency while maintaining adaptive control.

Inventive Principle:

Principle #3Local quality

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

The solution enables the production of all necessary lighting functions with reduced bulk and cost, achieving uniform color and efficient power usage, while allowing for various light source configurations without reconfiguration, thus improving headlight design and performance.

Implementation Method 1

a wavelength conversion device which is likely to re-emit a light radiation

Methodology Applied

Scientific EffectWavelength conversion: Photoluminescence

Implementation Method 2

This radiation is then deflected by this scanning system to at least one wavelength conversion device

Methodology Applied

Scientific EffectLight deflection: Reflection

Data Source

PatentUS10222018B2Light module and headlight provided with such a module

Publication Date: 2019.03.05 VALEO VISION SA

AI summary

A light module for a motor vehicle headlight comprising first and second light radiation sources suitable for emitting light radiations to a wavelength conversion device which is likely to re-emit a light radiation to an optical projection system to produce a light beam, wherein the module comprises a single wavelength conversion device which is common to the radiations of the first and second sources, and the first light radiation source comprises at least one first light source suitable for emitting a first light beam which cooperates with a first scanning system, the first scanning system being provided with a means for deflecting the light rays emitted by the first light source and configured to scan the conversion device with the first light beam in a first direction.