Vehicle Grille Lighting with Layered 3D Optical Branding

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Solution Overview

Problem

Existing grille lighting technologies for electric vehicles face limitations in expressing brand identity, leading to increased development and production costs and weight gain due to multiple illuminating devices, while lacking effective three-dimensional visual effects.

Innovation Solution

A lighting device comprising a housing, a lens, a light source, a first pattern layer with three-dimensional patterns, and a second pattern layer with two-dimensional patterns, which combine to create a three-dimensional optical illusion when illuminated, providing both non-illuminated and illuminated images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If multiple illuminating devices are used to achieve grille lighting, then the visual effect and brand identity expression are improved, but the weight and production costs increase

Engineering Contradiction:
Improvevisual effectVSAvoidweight
Core Design Contradiction:
Illumination intensityVSWeight of moving object

Solution Approach 1:

The patent combines multiple illuminating devices into a single integrated lighting device that uses one light source with multiple pattern layers (first pattern layer with three-dimensional patterns and second pattern layer with two-dimensional patterns) to create the desired visual effects, thereby reducing weight while maintaining illumination quality

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single lighting device performs multiple functions: it creates three-dimensional optical illusions through the first pattern layer, provides two-dimensional branding patterns through the second pattern layer, and can display different images in illuminated and non-illuminated states, replacing what would traditionally require multiple separate devices

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

2Illumination intensity

If multiple illuminating devices are used to achieve grille lighting, then the visual effect and brand identity expression are improved, but the development and production costs increase

Engineering Contradiction:
Improvevisual effectVSAvoidproduction costs
Core Design Contradiction:
Illumination intensityVSEase of manufacture

Solution Approach 1:

The patent combines multiple illuminating devices into a single integrated lighting device that uses one light source with multiple pattern layers (first pattern layer with three-dimensional patterns and second pattern layer with two-dimensional patterns) to create the desired visual effects, thereby reducing weight while maintaining illumination quality

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single lighting device performs multiple functions: it creates three-dimensional optical illusions through the first pattern layer, provides two-dimensional branding patterns through the second pattern layer, and can display different images in illuminated and non-illuminated states, replacing what would traditionally require multiple separate devices

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

3Device complexity

If conventional lighting solutions are used, then the implementation is simple, but the three-dimensional visual effect and brand identity expression are insufficient

Engineering Contradiction:
Improveimplementation complexityVSAvoidthree-dimensional visual effect
Core Design Contradiction:
Device complexityVSIllumination intensity

Solution Approach 1:

The patent introduces three-dimensional patterns in the first pattern layer that create optical illusions and depth perception when illuminated, transforming conventional two-dimensional lighting into multi-dimensional visual experiences that enhance brand identity expression

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The lighting device uses composite structure with multiple pattern layers (first pattern layer with three-dimensional patterns and second pattern layer with two-dimensional patterns) made of light-transmitting materials, combining different functional layers to achieve both simple implementation and superior three-dimensional visual effects

Inventive Principle:
Principle #40Composite materials

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 device enhances brand identity and product quality by offering a distinctive three-dimensional image and natural visual effects, reducing complexity and costs by integrating multiple functions into a single unit.

Implementation Method 1

a light source installed in the housing and configured to emit light toward the lens; a first pattern layer arranged between the light source and the lens and provided with one or more first pattern portions

Methodology Applied
Scientific EffectLight emission and transmission: Light

Implementation Method 2

The first pattern layer may include a three-dimensional pattern externally recognizable through the lens. The three-dimensional pattern may be implemented as a three-dimensional image when the light source is turned on

Methodology Applied
Scientific EffectThree-dimensional optical illusion: Refraction

Implementation Method 3

The second pattern layer may include two-dimensional patterns externally recognizable through the lens. The two-dimensional patterns may have different levels of transparency

Methodology Applied
Scientific EffectLight transmission with varying transparency: Absorption (EM radiation)

Data Source

PatentEP4610108A1Lighting device for vehicle
Publication Date: 2025.09.03 HYUNDAI MOBIS CO LTD
  • EP4610108A1 patent drawingFigure 1
  • EP4610108A1 patent drawingFigure 2~3
  • EP4610108A1 patent drawingFigure 4~5

AI summary

Disclosed is a lighting device for a vehicle according to the present disclosure including: a housing; a lens made of a transparent material, coupled to the housing, and configured to cover an opening provided in the housing; a light source installed in the housing and configured to emit light toward the lens; a first pattern layer arranged between the light source and the lens and provided with one or more first pattern portions; and a second pattern layer arranged between the first pattern layer and the lens and provided with one or more second pattern portions.