Vehicle Light Lens with Dedicated Reflection Surfaces
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Solution Overview
Problem
Existing vehicle light assemblies produce non-continuous light patterns with dark regions due to the reliance on flank surfaces for light reflection, limiting design variability and illumination efficiency.
Innovation Solution
A vehicle light assembly with a lens featuring a curved light exit surface, parabolic reflection surfaces, and adjustable flank surfaces that are not critical for light distribution, allowing for varied design and improved illumination by redirecting light rays effectively through the reflection surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If flank surfaces are used for light reflection, then light distribution is achieved, but light pattern becomes non-continuous with dark regions
Solution Approach 1:
The patent extracts the light reflection function from the flank surfaces and relocates it to dedicated reflection surfaces. This separation allows the flank surfaces to be redesigned for aesthetic purposes while the reflection surfaces maintain optimal light distribution, eliminating dark regions in the light pattern.
Solution Approach 2:
The lens is segmented into distinct functional zones: light entry surfaces, dedicated reflection surfaces, and flank surfaces. Each zone performs a specific function, with reflection surfaces specifically designed to redirect light and eliminate dark regions, while flank surfaces provide design flexibility.
2Illumination intensity
If flank surfaces are optimized for light reflection, then illumination efficiency improves, but design varieties are limited
Solution Approach 1:
The reflection function is extracted from the flank surfaces and assigned to dedicated reflection surfaces with optimized geometry. This allows the flank surfaces to be freely varied in shape and curvature for design purposes without compromising illumination efficiency.
Solution Approach 2:
The patent introduces a new dimension of design freedom by separating the functional reflection surfaces from the aesthetic flank surfaces. This dimensional separation in functional responsibility allows independent optimization of both illumination efficiency and design variety.
3Ease of operation
If light rays are reflected multiple times between flank surfaces, then light distribution is achieved, but dark regions appear between bright regions
Solution Approach 1:
Dedicated reflection surfaces act as intermediaries between the light entry surfaces and the exit surfaces. These intermediary surfaces are specifically shaped to redirect light rays and fill in the dark regions that would otherwise appear between bright regions, achieving uniform light distribution.
Solution Approach 2:
The reflection surfaces utilize curved geometries to redirect light rays at appropriate angles. The curved shape of the reflection surfaces enables effective light redirection to eliminate dark regions while maintaining overall light distribution.
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 provides a continuous and uniformly distributed light pattern, enhancing illumination efficiency and brightness while allowing for design flexibility in the flank surfaces, including different extensions and curvatures without affecting the light distribution.
Implementation Method 1
The left and right reflection surfaces are respectively connected to left and right sides of the light entry surface to reflect light of the light emitter passing through the light entry surface to the curved light exit surface
Implementation Method 2
The light entry surface has a first light entry portion through which the optical axis (L) passes
Data Source
AI summary
A lens of a vehicle light assembly includes a front curved light exit surface, a rear light entry surface spaced apart from the curved light exit surface along an optical axis and convexed rearwardly, left and right reflection surfaces connected to the light entry surface, and left and right flank surfaces connected to the left and right reflection surfaces and to the curved light exit surface. A minimum distance of each flank surface from the optical axis is greater than a maximum distance of each reflection surface from the optical axis.