Vehicle Lighting Assembly with Covered Light Blade
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Solution Overview
Problem
Existing vehicle lighting assemblies face challenges in efficiently directing and distributing light from light sources to achieve uniform illumination and aesthetic appeal, particularly in taillights, where light distribution and exposure of textured regions are critical for visibility and design.
Innovation Solution
A vehicle lighting assembly design featuring a primary lens with a light source, a light blade outside the lens, and a secondary lens that covers a portion of the light blade, secured with laser welds, creating sealed cavities outside the light source cavity, with a collimator to redirect light and a textured region for enhanced light distribution and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light blade is exposed without coverage to maximize light distribution, then light visibility is improved, but aesthetic appeal and control over light exposure deteriorate
Solution Approach 1:
The patent divides the lens into multiple segments: a first lens portion that exposes the light blade for visibility, and a second lens portion that covers the light blade for aesthetic appeal. This segmentation allows different regions of the lens to serve different functions - one region maximizes light distribution while another region provides controlled coverage for design aesthetics.
2Illumination intensity
If the secondary lens is positioned close to the light blade to eliminate gaps, then light distribution uniformity is improved, but manufacturing precision requirements worsen
Solution Approach 1:
The patent merges the secondary lens with the light blade assembly such that the secondary lens is positioned adjacent to the light blade with minimal gap. This merging approach eliminates visible gaps that would cause light leakage and maintains uniform light distribution, while the integrated design simplifies manufacturing by treating them as a coordinated assembly rather than separate components requiring precise alignment.
3Reliability
If the light blade is permanently secured to achieve structural stability, then reliability is improved, but ease of replacement worsens
Solution Approach 1:
The patent employs a dynamic fastening system where the light blade can be securely fastened to the lens during normal operation to ensure structural stability and reliability. However, the fastening mechanism is designed to allow easy removal and replacement when needed, transforming the connection from a static permanent bond to a dynamic reversible attachment that adapts between operational and maintenance states.
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 improved light distribution, eliminating hot spots, enhancing visibility and aesthetic appeal by securing the secondary lens close to the light blade with minimal gap, allowing for efficient light redirection and exposure of textured regions, facilitating easy replacement and customization of light blades.
Implementation Method 1
the secondary lens is secured to the light blade with laser welds
Implementation Method 2
a collimator configured to redirect light from the light source through the primary lens and to the light blade
Data Source
AI summary
A vehicle lighting assembly includes a primary lens and a light source on a first side of the primary lens. The light source is configured to emit light through the primary lens. A light blade is on an opposite, second side of the primary lens. A secondary lens covers a portion of the light blade. A vehicle lighting method includes emitting light from a light source, directing the light through a primary lens, directing the light from the primary lens through a light blade, and directing the light from the light blade through a secondary lens.