Vehicle Headlamp Light Function Module Design

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current vehicle headlamps are complex and costly due to the large number of components required for light source, distribution, and dissipation modules, which hinders compact design and efficiency.

Innovation Solution

A headlamp design incorporating a light function module with a common light source and dissipation module, and a modular light distribution system that includes a focusing lens, collimator lens, and shield retainer assembly, allowing for interchangeable light distribution patterns and reduced component count.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional headlamp design with separate light source module, light distribution module, and dissipation module is used, then each module can be optimized independently, but the overall device complexity and component count increases

Engineering Contradiction:
Improvemodule optimizationVSAvoidcomponent count
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the light source module and dissipation module into a single integrated unit, where the dissipation module is directly coupled to the light source module to dissipate heat generated by the light source. This merging reduces the overall component count and simplifies the headlamp structure while maintaining the ability to independently optimize lighting and thermal management functions through modular design of the integrated unit.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If multiple separate modules are used for light source, distribution, and dissipation, then each function can be optimized independently, but the headlamp size and volume increases

Engineering Contradiction:
Improvefunctional optimizationVSAvoidheadlamp volume
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent implements a nested arrangement where the light distribution module is positioned in front of the integrated light source and dissipation module, with the collimator lens and focusing lens arranged in sequence along the optical path. The shield retainer assembly is nested within the light distribution module, with the shield positioned to block specific light paths. This nesting allows multiple functional elements to occupy overlapping or adjacent spaces, reducing the overall headlamp volume while maintaining independent optimization of each function.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Device complexity

If a fixed light distribution pattern is used, then the optical system can be simplified, but the adaptability to different lighting conditions decreases

Engineering Contradiction:
Improveoptical system complexityVSAvoidbeam pattern flexibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent employs adjustable shields with varying shapes and positions that can be configured to create different beam patterns including low beam, high beam, and fog light patterns. The shield retainer assembly allows the shield to be positioned at different locations along the optical path, and the shield itself can have different geometric configurations. This dynamic adjustability enables the optical system to adapt to various lighting conditions and regulatory requirements without requiring multiple complete optical systems, maintaining reasonable complexity while achieving high versatility.

Inventive Principle:
Principle #15Dynamics

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 minimizes component complexity, enhances productivity, and enables flexible light function modules for different beam patterns, improving both efficiency and compactness of the headlamp system.

Implementation Method 1

a focusing lens configured to concentrate incident light

Methodology Applied
Scientific EffectLight focusing: Lens

Implementation Method 2

a collimator lens configured to emit light, incident from the light source module, in a form of parallel light

Methodology Applied
Scientific EffectLight collimation: Lens

Implementation Method 3

a shield retainer assembly configured to shield at least part of light emitted by the focusing lens and reflect the at least part of light emitted by the focusing lens

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentEP3330599B1Headlamp for vehicle
Publication Date: 2022.03.09 LG ELECTRONICS INC
  • EP3330599B1 patent drawingFigure 1~2
  • EP3330599B1 patent drawingFigure 3
  • EP3330599B1 patent drawingFigure 4

AI summary

Headlamp (1) for vehicle, comprising a plurality of light function modules (20, 30, 4), wherein each of the plurality of light function modules (20, 30, 40) comprises: a light source module (200) comprising a light source (230); a dissipation module (600) disposed behind the light source module (200) and configured to dissipate heat generated by the light source (230); and a light distribution module (300, 400, 500) disposed in front of the light source module (200) and configured to distribute light emitted by the light source module (200), and wherein one of the light distribution modules (500) comprises: a focusing lens (530) configured to concentrate incident light; a shield retainer assembly (570) configured to shield at least part of light emitted by the focusing lens (530) and reflect the at least part of light emitted by the focusing lens (530); a light distribution case (510) configured to accommodate the focusing lens (530) and the shield retainer assembly (570); and a light distribution cover (520) configured to cover the light distribution case (510).