Asymmetric Lens Unit for Narrow, Long Vehicle Light Patterns
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Solution Overview
Problem
Existing vehicle light illumination systems require complex structures to achieve anisotropic light patterns and are inefficient in terms of optical performance and size, particularly in forming narrow and long shapes.
Innovation Solution
A lens unit with independent light incident and emergent portions that collimate light in single directions, forming an asymmetric pattern, and a reflection portion to simplify the structure and reduce dimensions, while maintaining high optical efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a collimating lens with curved surface is used to obtain parallel emergent light, then the imaging is isotropic, but the light pattern cannot achieve the required anisotropic distribution (small up-down angle, large left-right angle)
Solution Approach 1:
The patent applies asymmetry by designing the light incident surface and light emergent surface with different curvature characteristics. The light incident surface has a first curvature radius while the light emergent surface has a second curvature radius that is different from the first, creating an asymmetric optical path that produces anisotropic light distribution patterns suitable for vehicle lighting requirements.
Solution Approach 2:
The patent implements local quality by giving different optical properties to different parts of the lens surfaces. Specifically, different regions of the light incident surface and light emergent surface have different curvature radii, allowing each region to contribute differently to the overall light distribution, achieving both isotropic and anisotropic characteristics in different directions.
2Illumination intensity
If additional optical systems are added to form basic light patterns, then the light distribution can be controlled, but the structure becomes complex and the light distribution process becomes tedious
Solution Approach 1:
The patent merges the functions of multiple optical surfaces into a single integrated lens structure. By combining the light incident surface and light emergent surface with different curvature radii into one optical component, the patent achieves complex light distribution control without requiring separate additional optical systems, thereby simplifying the overall structure.
Solution Approach 2:
The patent makes the single lens unit perform multiple functions: it collimates light, creates isotropic imaging, and simultaneously generates anisotropic light patterns. This multi-functionality eliminates the need for separate optical systems dedicated to each function, reducing structural complexity while maintaining comprehensive light control capability.
3Illumination intensity
If a spherical lens is used for collimation, then the imaging is isotropic, but the up-down dimension is large and cannot achieve narrow and long shape requirements
Solution Approach 1:
The patent applies asymmetry by designing the lens with different curvature radii for the light incident surface and light emergent surface. This asymmetric design allows the lens to achieve effective collimation while reducing the up-down dimension, enabling a narrow and long shape that meets modern vehicle lighting aesthetic and spatial requirements.
Solution Approach 2:
The patent changes the optical parameters by specifying different curvature radii for different surfaces of the lens. By adjusting and optimizing these curvature parameters, the patent achieves both good collimation performance and a compact up-down dimension, resolving the contradiction between optical performance and physical size.
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 lens unit achieves a compact, integrated design with reduced up-down dimension, enabling the formation of asymmetric light patterns and a narrow, long shape, simplifying the light distribution process and enhancing optical performance.
Implementation Method 1
a light incident portion collimating light in a first single direction and a light emergent portion collimating light in a second single direction
Data Source
AI summary
Disclosed are a lens unit, an optical lens, an illumination module, a vehicle light, and a vehicle. The lens unit comprises a light incident portion (1) having first unidirectional collimation and a light emergent portion (2) having second unidirectional collimation, so as to form an asymmetric light shape. The lens unit can meet the requirement of the anisotropy of the illumination light shape of the vehicle light so as to form the asymmetric light shape, thereby meeting the requirement for a narrow and long model.