Vehicle Headlight Laser Light-Emitting Device Segmentation
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Solution Overview
Problem
Existing vehicle headlamps lack sufficient color rendering properties and struggle to vary light distribution patterns effectively.
Innovation Solution
A light-emitting device comprising multiple laser beam sources, a light-emitting section that responds to the laser beams, and emission control means to control the emission of laser beams, positioning the irradiation regions differently to allow for flexible light distribution patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single light source is used, then the device structure is simple, but the color rendering property is insufficient and light distribution pattern cannot be varied
Solution Approach 1:
The patent divides the light source into multiple laser beam sources (first, second, third laser beam sources) with different wavelengths. Each laser beam source independently irradiates the light-emitting section, enabling different light distribution patterns to be formed by selectively controlling each source. This segmentation resolves the contradiction by allowing pattern variation without requiring a completely complex reconfigurable system.
Solution Approach 2:
The patent makes the light-emitting section serve multiple functions by having it respond to multiple wavelengths of laser beams simultaneously. The same light-emitting section generates different light distribution patterns depending on which laser beam sources are activated, providing both color rendering and pattern variation capabilities through a single component rather than requiring separate systems for each function.
2Illumination intensity
If multiple laser beam sources with different wavelengths are used, then color rendering property is improved, but the device size and complexity increase
Solution Approach 1:
The patent merges multiple laser beam sources with different wavelengths (first, second, and third laser beam sources) to simultaneously illuminate the light-emitting section. This combination allows the system to generate broad-spectrum light with good color rendering properties while maintaining a relatively compact structure, as all laser sources work together through a single light-emitting section rather than requiring separate optical paths for each wavelength.
3Illumination intensity
If laser beams are focused on the same irradiation region, then the light intensity is high, but the light distribution pattern cannot be varied
Solution Approach 1:
The patent segments the irradiation regions on the light-emitting section by positioning different laser beam sources to irradiate different areas. The first laser beam source irradiates a first irradiation region, the second laser beam source irradiates a second irradiation region, and the third laser beam source irradiates a third irradiation region. By selectively activating different laser sources, the system can vary the light distribution pattern while each active source maintains high intensity in its designated region.
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 a vehicle headlamp with improved color rendering and the ability to vary light distribution patterns, ensuring sufficient luminance and higher contrast, suitable for vehicle headlamps.
Implementation Method 1
a light-emitting section for emitting light in response to the laser beam emitted from at least one of the plurality of laser beam sources
Data Source
AI summary
A light-emitting device includes a plurality of laser elements, a light-emitting section for emitting light in response to a laser beam, and an emission control section for controlling whether each of the plurality of laser elements emits light or not. At least a part of the plurality of laser elements is positioned in such a manner that irradiation regions of the light-emitting section are positioned at least partially differently.