Vehicle Lamp Reflective Surface Partial Light Distribution
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Solution Overview
Problem
Existing vehicle lamps struggle with difficulty in partially adjusting light distribution due to uniform-shaped reflectors, limiting the ability to adapt light patterns according to different driving conditions.
Innovation Solution
A vehicle lamp design featuring a reflective surface with varying inclination angles and a recessed or protruding portion on the reflector to control light distribution, allowing partial adjustment by reflecting light in specific regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform-shaped reflectors are used, then manufacturing is simplified, but light distribution cannot be partially adjusted
Solution Approach 1:
The reflector is designed with different inclination angles in different regions: a first inclination angle in a first region and a second inclination angle in a second region. This local differentiation allows specific areas of the reflector to redirect light to different positions, enabling partial adjustment of light distribution while maintaining a relatively simple overall structure that can be manufactured using conventional processes.
2Adaptability or versatility
If reflector inclination angles are varied, then light distribution can be partially adjusted, but manufacturing complexity increases
Solution Approach 1:
The reflector surface is segmented into distinct regions with different inclination angles. The first region has a first inclination angle and the second region has a second inclination angle, allowing independent control of light reflection in different zones. This segmentation enables precise light distribution adjustment without requiring complex adjustable mechanisms, as the different inclination angles are integrated into the reflector's static structure.
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
Enables partial adjustment of light distribution patterns, enhancing visibility and safety by focusing light on desired areas, such as sidewalks, through improved light intensity and distribution control.
Implementation Method 1
a reflective surface that is provided below the plurality of light-emitting elements and between the light source unit and the lens and that reflects downward light, which is not incident as direct light on the lens from the plurality of light-emitting elements, and causes the downward light to be incident on the lens as reflected light
Data Source
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AI summary
A vehicle lamp, which is capable of partially adjusting the light distribution, includes a light source unit including a plurality of light-emitting elements, a lens provided in front of the light source unit, and a reflective surface provided below the plurality of light-emitting elements and between the light source unit and the lens. An inclination angle of a first reflective surface, which is a partial region of the reflective surface in a vehicle width direction, with respect to the lens optical axis is smaller than that of an adjacent region that is adjacent to the first reflective surface in the vehicle width direction.