Vehicle Side Lighting Module Lens for Uniform Lateral Illumination
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Solution Overview
Problem
Current vehicle lighting systems struggle to uniformly illuminate the side areas of a vehicle, particularly at night, which hinders the detection of road markings and obstacles, essential for autonomous driving functions, while also needing to be aesthetically and aerodynamically integrated without altering the vehicle's silhouette.
Innovation Solution
A compact lighting module with a specific lens design featuring an input diopter with a convex lower and concave upper section, and an output diopter with two convex portions separated by a concave portion, along with reflective surfaces to direct light efficiently and avoid dazzling adjacent vehicles, is integrated into the vehicle's side mirrors or body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lighting system is designed to uniformly illuminate the entire lateral surface area, then the illumination quality improves, but the device size and complexity increase
Solution Approach 1:
The patent applies local quality by designing the lens with spatially varying optical properties - the input surface has different curvature radii in different zones (first zone with radius R1, second zone with radius R2) to control light distribution locally across the lateral surface, achieving uniform illumination without requiring a complex multi-component system
Solution Approach 2:
The patent utilizes curved surfaces with specific radius of curvature values to control light propagation. The input surface employs different curvature radii (R1, R2) in different zones, and the output surface has curvature radius R3, creating precise optical control for uniform lateral illumination while maintaining a compact single-lens structure
2Shape
If the lighting module is made compact to maintain vehicle aesthetics, then the vehicle silhouette is preserved, but the illumination coverage and uniformity deteriorate
Solution Approach 1:
The patent achieves enhanced illumination coverage from a compact form factor by utilizing three-dimensional optical path control through the lens geometry. The light propagates through multiple zones with different curvatures, effectively expanding the illumination area laterally without increasing the module's external dimensions, thus preserving vehicle aesthetics while providing sufficient coverage
3Measurement precision
If the lighting covers adjacent lanes to detect road markings, then the detection capability improves, but the risk of dazzling adjacent vehicles increases
Solution Approach 1:
The patent applies local quality by directing light to specific zones with controlled intensity distribution. The lens design illuminates the adjacent lane area where road markings are located while avoiding direct illumination of adjacent vehicle positions, achieving detection capability without harmful glare through spatially selective lighting
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 solution provides uniform and efficient lighting of the side areas, enabling effective detection of road markings and obstacles, supporting autonomous driving functions while maintaining the vehicle's aesthetics and aerodynamics, and preventing glare for adjacent drivers.
Implementation Method 1
a lens (2) comprising an entry diopter (3) and an exit diopter (4), characterized in that the exit diopter (4) comprises, in a section through a horizontal plane, two convex portions (6) separated by a concave portion (7)... and in that the entry diopter (3) comprises, in a section through a vertical median plane, a convex lower portion (8) and a concave upper portion (9)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Disclosed is a lighting module (1) for a vehicle, characterised in that it comprises a light source (5) and a lens (2) comprising an input dioptre (3) oriented towards the light source (5) and an output dioptre (4), and in that the output dioptre (4) comprises at least one section through a horizontal plane comprising two convex portions (6) separated by a concave portion (7), viewed from a side opposite the light source (5), and in that the input dioptre (3) comprises a section through a vertical median plane (P) having a lower convex portion (8) and an upper concave portion (9), viewed from a side opposite the light source (5).