Light Guide Non-Emerging Hole Homogeneous Illumination
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Solution Overview
Problem
Achieving homogeneous lighting over areas larger than the light source in motor vehicle control panels is challenging due to the difficulty in distributing light uniformly, especially in shapes like lines or circles, and using multiple light sources increases complexity, heat, and energy consumption.
Innovation Solution
A light device with a light guide featuring an input diopter, an output diopter, lateral diopters, and non-emerging holes that allow light to be distributed uniformly by reflecting and dispersing light rays, reducing the need for multiple light sources and minimizing heat and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple light sources are used to illuminate large areas, then illumination coverage is improved, but device complexity and energy consumption increase
Solution Approach 1:
The patent introduces a vertical dimension by creating a cavity within the light guide structure. This cavity allows light to reflect between the top and bottom surfaces, effectively distributing light across a larger area without adding more light sources. The light propagates in multiple directions (upward, downward, sideways) within the cavity, achieving area expansion through dimensional utilization.
Solution Approach 2:
The cavity acts as an intermediary structure between the light source and the illuminated surface. Instead of directly illuminating the entire area, the light first enters the cavity where it undergoes multiple reflections off the lateral walls and between top/bottom surfaces, then exits to illuminate the target area. This intermediary mechanism distributes light more uniformly across large areas.
2Area of stationary object
If multiple light sources are used to illuminate large areas, then illumination coverage is improved, but energy consumption increases
Solution Approach 1:
The patent merges the functions of multiple light sources into a single light source by introducing a cavity structure. The cavity enables one light source to achieve the illumination coverage that would traditionally require multiple sources, thereby reducing energy consumption while maintaining or improving coverage area.
Solution Approach 2:
The cavity enables continuous light reflection and redistribution, maximizing the utilization of light from a single source. Instead of requiring multiple discrete light sources that would consume more energy, the continuous reflection process within the cavity ensures that light is distributed efficiently across the entire illuminated area.
3Area of stationary object
If multiple light sources are used to illuminate large areas, then illumination coverage is improved, but heat generation increases
Solution Approach 1:
The patent combines the illumination function of multiple potential light sources into a single light source with a cavity structure. This reduction in the number of active light-generating components directly reduces the total heat generation, while the cavity ensures that the single source's light is distributed effectively across the required area.
Solution Approach 2:
The cavity serves as a thermal management intermediary by providing a physical space for light reflection without requiring additional heat-generating components. The light guide material and cavity structure facilitate heat dissipation while maintaining illumination coverage.
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 more homogeneous lighting over a wider area while reducing the number of light sources and energy consumption, maintaining a fair balance between complexity and lighting needs.
Implementation Method 1
a light guide (14) comprising an input diopter (20) configured to let in the light emitted by the light source (12) illuminating the input diopter, an output diopter (22) configured to let the light out of the light guide, the light guide further comprising: lateral diopters (43, 44) forming facing surfaces, and at least one non-emerging hole (30) arranged between the entrance interface and the exit interface
Data Source
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AI summary
A lighting device (10) comprising a light source (12) and a light guide (14), wherein the light guide comprises an entry diopter (20) configured to allow the entry of the light emitted by the light source illuminating the entry diopter, and an exit diopter (22) configured to allow the light to leave the light guide, characterized in that the light guide further comprises lateral diopters (43, 44) forming opposite surfaces, and at least one blind hole (30) disposed between the entry diopter and the exit diopter, wherein said blind hole (30) is formed from at least one recess (46) in one of the surfaces forming a lateral diopter (43) and is configured in such a way as not to open onto the opposite surface forming a lateral diopter (44), the edges of the blind hole forming secondary diopters (32, 34).