Segmented Lens for Slim Vehicle Lamp Light Distribution
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Solution Overview
Problem
Existing vehicle lamps have a large volume due to multiple modules and thick lenses, making it difficult to achieve a slim design while maintaining compliance with light distribution pattern regulations.
Innovation Solution
A light emitting module with a single lens that includes distinct areas for forming different light distribution patterns, optimizing the focal distances and light input surfaces to minimize volume and enhance slimness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple modules are used to form light distribution patterns, then the light distribution pattern can satisfy legal requirements, but the lamp volume increases and slimming becomes difficult
Solution Approach 1:
The patent combines multiple light distribution pattern formation functions into a single lens by creating multiple distinct areas (first area, second area, third area) within one lens structure. Each area is responsible for forming a specific light distribution pattern, replacing the need for multiple separate modules while maintaining compliance with legal requirements for light distribution patterns.
Solution Approach 2:
The lens is segmented into multiple functional areas with different optical characteristics. The first area has a first focal length for forming a first light distribution pattern, the second area has a second focal length for forming a second light distribution pattern, and the third area has a third focal length for forming a third light distribution pattern. This segmentation allows each area to independently contribute to the overall light distribution pattern compliance while being integrated in one lens.
2Device complexity
If a lens with same horizontal and vertical focus is used, then light distribution can be simplified, but the lens thickness increases and volume increases
Solution Approach 1:
Different areas of the lens have different focal lengths tailored to their specific functions. The first area has a first focal length optimized for its light distribution pattern, the second area has a second focal length for its pattern, and the third area has a third focal length. This local differentiation of optical properties allows each area to be optimized for its specific purpose while maintaining overall lens integration, avoiding the need for uniform thickness throughout the lens.
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 the formation of compliant light distribution patterns using a single module, minimizing lamp volume and enabling a slimmer design.
Implementation Method 1
a lens into which the light beam output from the light source is input, through which the light beam passes, and in which the light beam then forms a light distribution pattern and is output
Data Source
AI summary
A light emitting module including a light source and a lens into which a light beam output from the light source is input, through which the light beam passes, and in which the light beam then forms a light distribution pattern and is output, wherein the lens includes a first area that outputs a light beam for forming a first light distribution pattern that is a central portion of the light distribution pattern, and a second area that outputs a light beam for forming a second light distribution pattern that has illuminance lower than that of the first light distribution pattern and is a peripheral portion of the light distribution pattern, and a diffusion angle of the light beam output from the second area in a left-right direction is greater than a diffusion angle of the light beam output from the first area in the left-right direction.