Vehicle Lamp Module Composite Optical Sheet Depth Perception
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Solution Overview
Problem
Existing vehicle lamp modules with 3D lens sheets face difficulties in product management due to foreign substances getting trapped between patterns, leading to reduced transparency and lifespan, and lack of effective depth perception and durability.
Innovation Solution
A lamp module with a composite optical sheet featuring a lenticular pattern and a concave pattern, combined with a light diffuser and bezels, which provides excellent depth perception and durability through precise light refraction and diffusion, using materials like polymethyl methacrylate resin and transparent ink patterns, and primer layers for enhanced reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a 3D lens sheet with patterns is used to provide depth perception, then depth perception and sense of transformation are improved, but foreign substances are trapped between patterns making product management difficult and reducing transparency and lifespan
Solution Approach 1:
The patent divides the optical sheet into multiple functional layers: a light diffuser layer and a separate 3D optical pattern layer. This segmentation allows the light diffuser to handle light distribution while the optical pattern layer provides depth perception, preventing foreign substance accumulation in complex patterns and improving both depth perception and product lifespan.
Solution Approach 2:
The patent introduces a light diffuser as an intermediary component between the light source and the 3D optical pattern layer. This intermediary diffuses light before it reaches the optical patterns, reducing the trapping of foreign substances while maintaining the depth perception effect, thus improving both illumination quality and product reliability.
2Illumination intensity
If a 3D lens sheet with patterns is used to provide depth perception, then depth perception and sense of transformation are improved, but transparency is gradually reduced due to trapped foreign substances
Solution Approach 1:
The patent segments the optical system into a light diffuser layer and a 3D optical pattern layer, allowing each to perform its specialized function. This prevents foreign substances from being trapped in complex patterns, maintaining transparency while preserving depth perception capabilities.
Solution Approach 2:
The patent extracts the light diffusion function from the 3D optical pattern layer and places it in a separate light diffuser component. This extraction prevents foreign substance accumulation in the optical patterns, thereby maintaining transparency while preserving the depth perception effect.
3Reliability
If multiple layers including primer layers are added to prevent contamination and enhance durability, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies primer layers in advance during the manufacturing process to prevent contamination and ensure proper adhesion between layers. This preliminary action improves reliability and durability without requiring complex assembly procedures, as the protective layers are already in place before final assembly.
Solution Approach 2:
The patent uses composite material structures with primer layers between different functional layers (light diffuser and optical pattern layer). These composite structures enhance durability and prevent contamination through material compatibility, while the systematic layering approach actually simplifies manufacturing compared to trying to achieve the same protection through mechanical means.
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 achieves excellent depth perception, sense of transformation, and durability by preventing contamination and maintaining optical performance, withstanding high temperatures and humidity without bubbles, surface peeling, discoloration, or deformation.
Implementation Method 1
a light diffuser disposed above the light source assembly to diffuse irradiated light
Implementation Method 2
a composite optical sheet disposed above the light diffuser and configured to realize a luminous image having a three dimensional pattern when diffused light is incident thereon
Data Source
AI summary
A lamp module for a vehicle is provided. The lamp module for a vehicle includes: a housing defining a space portion therein; a light source assembly accommodated in the housing and including a light source configured to generate light and a substrate coupled to the light source to supply a current; a light diffuser disposed above the light source assembly to diffuse irradiated light; a composite optical sheet disposed above the light diffuser and configured to realize a luminous image having a stereoscopic pattern when diffused light is incident thereon; and bezels formed on an outer circumferential surface of the housing.