Vehicle Lamp Shield Unit for Reversing Pattern Visibility
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Solution Overview
Problem
Existing vehicle lamps do not effectively form a recognizable rear road surface pattern when a vehicle is reversing, making it difficult for surrounding drivers or pedestrians to identify the vehicle's reverse motion in low light conditions.
Innovation Solution
A vehicle lamp design incorporating a light source unit, a shield unit with main and auxiliary transmission apertures, and a lens unit with convex and concave lenses, which projects light to form a series of road surface patterns with uniform brightness and clarity, enhancing visibility during reverse motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional reversing lamp is used, then the basic illumination function is provided, but the visibility of reverse motion is insufficient in low light conditions
Solution Approach 1:
The shield unit is divided into multiple transmission aperture units (first, second, third, fourth aperture units) arranged at different positions and orientations. Each aperture unit projects light to a specific road surface pattern, creating segmented illumination zones that collectively enhance the visibility of reverse motion without requiring a single complex high-intensity light source.
Solution Approach 2:
Each transmission aperture unit has specific structural characteristics (different orientations, positions, and aperture configurations) tailored to project light to specific road surface patterns. The first and second aperture units project to first road surface patterns, while the third and fourth aperture units project to second road surface patterns, creating localized illumination quality variations that enhance overall visibility.
2Loss of information
If multiple transmission aperture units are used to form road surface patterns, then the recognition of reverse motion is improved, but the device complexity increases
Solution Approach 1:
Multiple transmission aperture units are merged into a single shield unit structure that is integrated with the lamp housing. The shield unit combines first and second transmission aperture units (projecting to first road surface patterns) with third and fourth transmission aperture units (projecting to second road surface patterns), creating a unified structure that reduces overall system complexity while maintaining multiple illumination functions.
Solution Approach 2:
The shield unit serves multiple functions simultaneously: it acts as a light shielding structure, a light guiding structure with multiple transmission aperture units, and a positioning structure for the lens unit. The transmission aperture units collectively provide both first road surface patterns and second road surface patterns, making the shield unit a multi-functional component that reduces the need for separate structures.
3Volume of moving object
If the lens unit is positioned close to the shield unit, then the structure is compact, but the focus precision of road surface patterns decreases
Solution Approach 1:
The lens unit is pre-positioned at a specific distance from the shield unit during assembly, with the optical axes of the transmission aperture units and lens unit aligned in advance. This preliminary positioning ensures that the focal points of the road surface patterns are accurately formed at the intended locations on the road surface, maintaining focus precision while keeping the overall structure compact.
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 allows for easier recognition of a vehicle's reverse motion by forming a series of road surface patterns with uniform brightness and clarity, improving visibility and safety during nighttime or low-light conditions.
Implementation Method 1
The lens unit may include a convex lens and a concave lens that are stacked together, and the convex lens and the concave lens may have different refractive indices. The light that transmits through the shield unit may transmit through the convex lens after transmitting through the concave lens.
Implementation Method 2
a lens unit for focusing the light that transmits through the shield unit on a road surface
Data Source
AI summary
A lamp for a vehicle includes a light source unit for generating light, a shield unit for selectively transmitting at least some of the light generated from the light source unit, and a lens unit for focusing the light that transmits trough the shield unit on a road surface. A main transmission light among the light that is transmitted through the shield unit forms a plurality of road surface patterns, and an auxiliary transmission light among the light that is transmitted through the shield unit is irradiated to one or more selected road surface pattern among the plurality of road surface patterns to increase brightness of the selected road surface pattern.