Compact Vehicle Light System Using Laser-Phosphor Switching
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Solution Overview
Problem
Current vehicle light systems face challenges in producing multiple beam types without moving parts, which are costly, complex, and inefficient in cooling, especially in adverse weather conditions, and require significant space due to multiple LED sources.
Innovation Solution
A compact vehicle light system utilizing a single laser device that switches between different phosphor elements and optical elements to generate various beam types, employing optical switches and phosphor elements to produce multiple beam types without moving parts, ensuring efficient cooling and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LED light source elements are used to produce different beam types, then adaptability to different driving conditions is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent applies a single laser device that can operate in multiple modes to generate different wavelengths, which then excite different phosphor elements to produce various beam types. This multi-functional approach allows one component to replace multiple dedicated components, achieving adaptability without increasing device complexity
Solution Approach 2:
The patent combines multiple phosphor elements with different emission characteristics into a single light output module, where each phosphor element can be selectively excited by the laser device. This merging of multiple light-generating pathways into one integrated module reduces overall system complexity while maintaining beam type versatility
2Adaptability or versatility
If multiple LED light source elements are used to produce different beam types, then adaptability to different driving conditions is improved, but the required space increases
Solution Approach 1:
The single laser device serves multiple functions by switching between different operating modes to generate various wavelengths, eliminating the need for multiple separate LED modules and significantly reducing the required installation space while maintaining full adaptability
Solution Approach 2:
Multiple phosphor elements with different emission spectra are combined in one light output module, allowing compact arrangement of multiple light-generating pathways in a single integrated structure, thereby reducing the overall footprint of the light system
3Adaptability or versatility
If multiple LED light source elements are used, then different beam types can be generated, but cooling performance deteriorates due to complex heat sink requirements
Solution Approach 1:
The single laser device with multiple operating modes generates all required wavelengths, concentrating heat generation in one location rather than multiple distributed sources. This enables a single, optimized heat sink design to effectively cool the entire system, improving cooling performance and reliability
4Adaptability or versatility
If mechanical actuators are used to change beam direction, then adaptability to different driving conditions is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical actuators with an optical switch that uses optical fields to control beam direction. This substitution eliminates moving parts and mechanical complexity while maintaining the ability to adapt beam direction to different driving conditions, improving reliability and reducing cost
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 system achieves efficient generation of multiple beam types in a compact form, improving reliability, durability, and cooling performance while reducing costs, and can be controlled to adapt to different driving conditions.
Implementation Method 1
a laser device for generating a laser beam, further comprising a light output module provided with a phosphor element for emitting a light beam upon incidence of the generated laser beam
Implementation Method 2
provided with an optical element associated with the phosphor element for producing a light output beam
Implementation Method 3
the laser device comprises an optical switch for changing the direction and/or position of the laser beam
Data Source
AI summary
The invention relates to a vehicle light system comprising a laser device for generating a laser beam, further comprising a light output module provided with a phosphor element for emitting a light beam upon incidence of the generated laser beam and provided with an optical element associated with the phosphor element for producing a light output beam. Furthermore, the light system comprises a further light output module provided with a corresponding further phosphor element and a second optical element. The laser device is arranged to switch between a first state, in which the generated laser beam is directed to the phosphor element, and a second state in which the generated laser beam is directed to the further phosphor element.