Vehicle Lamp Light Guide with Matrix Reflective Elements
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Solution Overview
Problem
Existing vehicle lamp designs with plate-shaped light guides struggle to achieve uniform linear light emission and sufficient brightness, limiting design enhancement when the lamp is turned on.
Innovation Solution
A vehicle lamp configuration featuring a plate-shaped light guide with continuously arranged reflective elements in multiple rows, where each element has a concave curved surface, allowing light to be totally reflected and emitted uniformly, enhancing the appearance of linear light emission and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a narrow groove-like reflective element or linear arrangement of reflective elements is used, then linear light emission is achieved, but the sight direction is limited and brightness is insufficient
Solution Approach 1:
The patent transitions from one-dimensional linear arrangement of reflective elements to a two-dimensional matrix arrangement (multiple rows and columns). This dimensional expansion allows light to be reflected toward linear emission patterns while collecting light from multiple angular directions, thereby maintaining brightness without limiting sight direction.
Solution Approach 2:
The patent combines multiple reflective elements arranged in a matrix configuration to work together as a unified light-emitting structure. By merging the reflective functions of multiple elements positioned at different depths and angles, the system achieves both linear emission appearance and sufficient brightness through cumulative light reflection.
2Shape
If a plate surface is textured to achieve linear light emission, then design property is improved, but sufficient brightness cannot be secured
Solution Approach 1:
The patent segments the light guide plate into multiple discrete reflective elements arranged in a matrix, rather than using a continuous textured surface. Each reflective element can be independently optimized for light reflection, and their collective arrangement creates the linear emission pattern while maintaining high brightness through efficient light collection.
3Illumination intensity
If reflective elements are arranged in multiple rows with varying depths, then uniform brightness is achieved across different viewing angles, but device complexity increases
Solution Approach 1:
The patent applies local quality by varying the depth of reflective elements based on their position within the matrix. Elements in different rows and columns have different depths optimized for their specific angular positions, allowing uniform brightness distribution across various viewing angles while maintaining a systematic rather than random complexity.
Solution Approach 2:
The reflective elements are designed with curved or dome-shaped surfaces rather than flat geometries. This curvature enables omnidirectional light reflection, allowing each element to contribute to uniform brightness from multiple viewing angles, thereby achieving brightness uniformity with a relatively simple repetitive structural motif.
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 configuration ensures uniform linear light emission along the plate-shaped light guide, maintaining brightness consistency across different viewing angles, thereby improving the design and performance of the vehicle lamp.
Implementation Method 1
the plate-shaped light guide is configured to totally reflect light from the light source and incident on the plate-shaped light guide by a plurality of reflective elements
Data Source
AI summary
A vehicle lamp includes a light source and a plate-shaped light guide including a first plate surface on which a plurality of reflective elements are formed and a second plate surface. The plate-shaped light guide is configured to totally reflect light from the light source by the plurality of reflective elements. The plurality of reflective elements are arranged in a state of being continuously arranged along a line extending in a direction, and are arranged in a plurality of rows on the line. The plate-shaped light guide is configured to allow the light from the light source to reach a position of the line from a first direction. Each of the reflective elements has a substantially concave curved surface shape, and as compared to reflective elements constituting a first row, reflective elements constituting a second row is formed at a deeper position from the first plate surface.