Vehicle Lamp Reflective Layer Layout for Uniform Light Distribution
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Solution Overview
Problem
Existing lighting devices suffer from non-uniform light distribution and off-light images, limiting design freedom and optical reliability.
Innovation Solution
A lighting device comprising a substrate with a first reflective layer having reflection patterns and a second reflective layer with holes, where the arrangement and size of holes and patterns are strategically designed to improve light distribution and surface uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional lighting devices are used, then the structure is simple, but the light distribution is non-uniform and off-light images occur
Solution Approach 1:
The reflective layer is segmented into multiple regions with different reflection characteristics. The first reflective layer has first reflective regions and second reflective regions with different reflection ratios, and the second reflective layer has third reflective regions and fourth reflective regions. This segmentation allows precise control over light distribution patterns, eliminating non-uniformity and off-light images while maintaining a relatively simple overall structure.
Solution Approach 2:
Different regions of the reflective layers are assigned different local properties. The first reflective layer contains regions with different reflection ratios, and the second reflective layer contains regions with different reflection characteristics. This local differentiation enables customized light distribution in specific areas, improving overall light uniformity without requiring complex structures throughout the entire device.
2Length of moving object
If the lighting device thickness is reduced for slim design, then the device becomes more compact, but surface uniformity deteriorates
Solution Approach 1:
Instead of increasing thickness to improve surface uniformity, the patent introduces horizontal dimensionality through multiple reflective layers with different reflection characteristics. The first and second reflective layers are arranged horizontally with specific reflection ratios, creating uniform light distribution through lateral light path management rather than vertical depth, thus achieving slim design without sacrificing surface uniformity.
3Manufacturing precision
If reflection patterns and holes are added to improve light distribution, then light distribution characteristics improve, but manufacturing complexity increases
Solution Approach 1:
The patent combines multiple reflective layers with different reflection characteristics into a single integrated structure. The first reflective layer with first reflective regions is merged with the second reflective layer having second reflective regions, creating a unified light distribution system. This merging approach achieves improved light distribution characteristics while avoiding the manufacturing complexity that would arise from separate, independent components.
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 light distribution characteristics, improves surface uniformity, and provides customizable lighting effects, suitable for vehicle lamps and display devices.
Implementation Method 1
a first reflective layer disposed on the substrate and having a plurality of reflection patterns
Implementation Method 2
a second reflective layer disposed on the resin layer and having a plurality of holes
Implementation Method 3
the plurality of holes may be penetrated through the second reflective film
Implementation Method 4
a resin layer disposed on the first reflective layer
Data Source
AI summary
The lighting device disclosed at an embodiment of the invention includes a substrate; a first reflective layer disposed on the substrate and having a plurality of reflection patterns; a light source disposed on the substrate; a resin layer disposed on the first reflective layer; and a second reflective layer disposed on the resin layer and having a plurality of holes, wherein an arrangement form of the plurality of holes is the same as that of the plurality of reflection patterns.