Vehicle Light Fixture With Side Pattern Projection Boundaries
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Solution Overview
Problem
Existing vehicle light fixtures face challenges in efficiently illuminating road surfaces while maintaining a compact size and low manufacturing costs, and in ensuring that the illumination pattern is recognizable without increasing light intensity, particularly for alerting drivers and pedestrians.
Innovation Solution
A vehicle light fixture design that includes a first light distribution illuminator for the front and a second light distribution illuminator for the sides, with controlled illumination to form a pattern featuring light-dark boundary lines, using a projection lens to focus light and emphasize these boundaries, allowing for reduced size and cost without increasing light source intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large-scale system with multiple light sources is used to emit various patterns, then the illumination pattern versatility is improved, but the device size and manufacturing cost increase
Solution Approach 1:
The patent divides the illumination system into two functional segments: a first light distribution illuminator for front illumination and a second light distribution illuminator for side illumination with pattern projection. This segmentation allows each component to be optimized independently, reducing overall device complexity while maintaining pattern versatility through the coordinated operation of both segments.
Solution Approach 2:
The projection lens is designed to perform multiple functions: it projects illumination patterns onto the road surface, creates light-dark boundary lines for pattern recognition, and controls light distribution to alert pedestrians and drivers. This multi-functionality eliminates the need for separate components, reducing device size while maintaining versatility.
2Loss of information
If the light intensity of the light source is increased to make the illumination pattern recognizable, then the pattern recognition is improved, but the energy consumption and light source requirements increase
Solution Approach 1:
The projection lens concentrates light specifically at the light-dark boundary lines of the illumination pattern rather than uniformly increasing light intensity across the entire pattern. This local concentration of optical energy enhances pattern recognition at critical boundaries while minimizing overall energy consumption.
Solution Approach 2:
The patent changes the light distribution parameters by using a projection lens to focus light at specific locations (boundary lines) rather than uniform illumination. This parameter change allows effective pattern recognition with lower overall light intensity, reducing energy consumption while maintaining recognizability.
3Device complexity
If only partial illumination is used to form an illumination pattern, then the device size is reduced, but the alerting effectiveness to pedestrians and drivers decreases
Solution Approach 1:
The patent uses light-dark boundary lines created by the projection lens to define the illumination pattern. These high-contrast boundaries serve as visual alerts to pedestrians and drivers, maintaining alerting effectiveness even with partial illumination by emphasizing the pattern's轮廓 (contour) through sharp light-dark transitions.
Solution Approach 2:
The projection lens acts as an intermediary that transforms the light from the second light distribution illuminator into a recognizable pattern with distinct boundary lines on the road surface. This intermediary component enables effective alerting with reduced illumination coverage by optimizing the visual impact of the projected pattern.
4Loss of information
If a projection lens is used to focus light on light-dark boundary lines, then the pattern recognition is improved, but the device complexity increases
Solution Approach 1:
The patent merges the pattern projection function with the illumination function by integrating the projection lens directly into the second light distribution illuminator. This combination eliminates the need for separate pattern generation components, reducing device complexity while maintaining effective pattern recognition through light-dark boundary lines.
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 enables effective road surface illumination that is recognizable and alerts nearby individuals without enlarging the fixture or increasing light intensity, thus addressing the challenges of cost, size, and pattern recognition.
Implementation Method 1
a projection lens that projects light emitted from the light source to form an illumination pattern surrounded by multiple light-dark boundary lines
Implementation Method 2
a projection lens that projects light emitted from the light source
Implementation Method 3
the projection lens focuses more of the light emitted from the light source as the light passes farther outward of the optical axis of the projection lens, and focuses the light emitted from the light source on at least a portion of the light-dark boundary lines for emphasis
Data Source
AI summary
A vehicle light fixture include a first light distribution illuminator that emits a first light distribution to the front of a vehicle, and a second light distribution illuminator that emits a second light distribution having a light-dark boundary line at least on a side of the vehicle, wherein illumination of the first light distribution illuminator and the second light distribution illuminator is controlled in response to a predetermined operation of the first light distribution illuminator by the driver of the vehicle. The second light distribution illuminator includes a light source, and a projection lens that projects light emitted from the light source to form an illumination pattern surrounded by multiple light-dark boundary lines and emit the illumination pattern to a side of the vehicle, and the projection lens focuses more of the light emitted from the light source passing outwardly from the optical axis of the projection lens.