Vehicle Lamp Module with Shared Light Guide for Chromatic Control

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Solution Overview

Problem

Conventional vehicle lamps suffer from design limitations due to multiple light sources with different emission surfaces, excessive space occupation, and chromatic aberrations caused by varying refractive indexes, which degrade light distribution patterns and product value.

Innovation Solution

A lamp module with a single light guide part that integrates multiple light sources, utilizing optic members and recessed areas to reflect and distribute light efficiently, minimizing chromatic aberrations and allowing shared light emission surfaces for different functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple different lamps are mounted on a vehicle to satisfy various lighting functions, then the lighting functions are comprehensive, but the space occupied by the lamps becomes excessively large

Engineering Contradiction:

Improvelighting function varietyVSAvoidspace occupied by lamps

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent combines multiple different lamp functions (low beam, high beam, DRL) into a single integrated lamp module. The light guide part serves as a common optical component that distributes light from a single light source to multiple emission surfaces, eliminating the need for separate lamp assemblies and reducing overall space occupation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light guide part is designed as a universal optical component that can guide light for multiple different lighting functions simultaneously. By creating multiple light emission surfaces from a single light source through the light guide, the system achieves multi-functionality without requiring multiple dedicated lamp units.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple different lamps with different light sources are mounted on a vehicle, then various lighting functions are achieved, but the design differentiation is limited due to different emission surfaces

Engineering Contradiction:

Improvelighting function varietyVSAvoidemission surface uniformity

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The patent merges multiple emission surfaces into a unified optical system where all surfaces share the same light guide part. This creates a consistent emission characteristic across all lighting functions (low beam, high beam, DRL), enabling better design differentiation while maintaining functional variety.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The light guide part serves as a universal optical element that generates multiple emission surfaces with consistent characteristics. This unified approach allows the single lamp module to provide diverse lighting functions while maintaining design coherence and differentiation capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If lenses with different refractive indexes are used in the lamp, then various light distribution patterns are achieved, but chromatic aberrations occur that deteriorate product value

Engineering Contradiction:

Improvelight distribution pattern varietyVSAvoidchromatic aberration

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the light distribution control function from refractive index variations in multiple lenses and consolidates it into a single light guide part. By using one optical component instead of multiple lenses with different refractive indexes, the system achieves various light distribution patterns without introducing chromatic aberrations.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The light guide part is constructed as a homogeneous optical component with uniform material properties throughout. This homogeneity ensures consistent light transmission and refraction characteristics, eliminating chromatic aberrations that would occur with multiple lenses of different refractive indexes while still enabling diverse light distribution patterns.

Inventive Principle:

Principle #33Homogeneity

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

Enhances design differentiation and improves light distribution patterns by reducing chromatic aberrations, optimizing space utilization and maintaining optical efficiency.

Implementation Method 1

at least a portion of the light output from the first light source and input to the first optic member is totally reflected by the optic connection surface and is input to the light guide part

Methodology Applied

Scientific EffectTotal internal reflection: Total Internal Reflection

Data Source

PatentUS12359787B2Lamp module for vehicle and lamp for vehicle including the same

Publication Date: 2025.07.15 HYUNDAI MOBIS CO LTD

AI summary

Disclosed is a lamp module for a vehicle including a first light source that outputs light, a light guide part provided on a front side of the first light source, and a first optic member provided between the first light source and the light guide part, to which the light output from the first light source is input, and that outputs the light input from the first light source to the light guide part, a first recessed area having a shape that is recessed upwards is formed on a lower surface of the light guide part.