Vehicle Lamp Lens Geometry for Uniform Texture Illumination
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Solution Overview
Problem
Conventional vehicle lamps form discontinuous textures due to dark parts on their output surfaces, which deteriorate the aesthetic appearance.
Innovation Solution
A lamp design featuring a lens with alternating concave and convex surfaces on its input surface, and bosses and grooves on its output surface, ensuring even light distribution and eliminating dark parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional lamp design is used, then beam pattern is formed, but dark parts are created on output surface causing discontinuous texture
Solution Approach 1:
The input surface is segmented into multiple regions with different curvatures (concave and convex portions), allowing different light rays to be refracted at different angles. This segmentation enables uniform light distribution across the output surface while preventing dark part formation, thus maintaining continuous texture appearance.
Solution Approach 2:
Different portions of the input surface are given different local optical properties through varying curvature (concave vs convex). The concave portions converge light while convex portions diverge light, creating complementary effects that eliminate dark spots and ensure uniform illumination across the entire output surface.
2Reliability
If dark parts are formed on output surface, then beam pattern regulation is satisfied, but aesthetic texture of vehicle deteriorates
Solution Approach 1:
The curvature parameter of the input surface is changed across different regions (from concave to convex). This parameter variation allows the lamp to satisfy beam pattern regulations through controlled light distribution while simultaneously eliminating dark parts that would otherwise harm aesthetic appearance.
3Illumination intensity
If all areas of output surface emit light evenly, then aesthetic texture is maximized, but conventional designs produce dark parts
Solution Approach 1:
The input surface utilizes spherical curvature variations (concave and convex portions) to achieve uniform light emission. This curvature-based approach provides an elegant geometric solution that accomplishes even light distribution without requiring complex multi-component systems, thus balancing aesthetic goals with structural simplicity.
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 design prevents discontinuous textures, enhancing the vehicle's aesthetic appeal by ensuring uniform light emission and continuous beam patterns.
Implementation Method 1
a lens disposed on a front side of the light source, wherein the lens includes an input surface to which the light is input
Data Source
AI summary
A lamp and a vehicle therefor are provided. The lamp includes: a light source to output light; and a lens disposed on a front side of the light source. The lens includes an input surface to which the light is input, the input surface defining a rear side of the lens. The input surface includes: a concave surface having a shape being recessed forward to be concave when an upper side of the input surface is viewed in parallel to an upward/downward direction; and a convex surface having a shape protruding to be convex rearward when the upper side of the input surface is viewed in parallel to the upward/downward direction, the convex surface connected to the concave surface in a first direction crossing a forward/rearward direction and the upward/downward direction.