Laser Car Lamp Light Guide Element Safety Design
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Solution Overview
Problem
Laser car lamps pose safety risks due to direct emission of laser beams, which can cause harm to others, and existing technologies lack efficient and safe solutions for dynamic adjustment of projection distance and light patterns.
Innovation Solution
A laser car lamp design featuring annularly arranged laser diodes, light guide elements with phosphor and reflective layers, and a lens system that directs laser beams internally to avoid external irradiation, allowing for adjustable light patterns and reduced volume and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If laser beams are emitted directly from the laser car lamp, then brightness and lighting quality are improved, but safety risks increase due to potential harm to others
Solution Approach 1:
The patent introduces a light guide element as an intermediary between the laser diode and the external environment. The laser beam is first directed into the light guide element, which then guides and shapes the light before it exits through the lens. This intermediary structure allows the laser beam to be contained and controlled during transmission, preventing direct harmful emission while maintaining brightness and lighting quality.
Solution Approach 2:
The patent segments the light emission path into distinct functional components: laser diode, light guide element, and lens. By dividing the system into these segments, each component can be optimized for its specific function - the laser diode for brightness, the light guide element for safe containment and guidance, and the lens for final light shaping. This segmentation allows simultaneous achievement of high brightness and safety.
2Object-affected harmful factors
If light guide elements and optical components are added to ensure safety, then safety is improved, but device volume and structural complexity increase
Solution Approach 1:
The patent merges the light guide element and lens into a closely integrated optical system. The light guide element is positioned adjacent to the laser diode, and the lens is disposed at the other end of the light guide element, creating a compact integrated structure. This merging reduces the number of separate components and simplifies the overall structure while maintaining the safety function of guiding the laser beam through a controlled path.
Solution Approach 2:
The light guide element serves multiple functions simultaneously: it contains the laser beam for safety, guides the light from the laser diode to the lens, and helps shape the light pattern. By making this single component multi-functional, the patent reduces the need for additional separate components, thereby reducing structural complexity while maintaining safety.
3Adaptability or versatility
If multiple light guide elements are used to fulfill different illumination requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic adaptability by enabling selective activation of different laser diodes arranged in specific patterns (e.g., inner ring vs. outer ring). This dynamic control allows the system to adapt to different illumination requirements (high beam, low beam, cornering lights) without physically changing components. The controller can dynamically select which laser diodes to activate, providing versatility while maintaining a relatively simple fixed structure.
Solution Approach 2:
The patent changes operational parameters (which laser diodes are activated and their emission intensity) to achieve different illumination patterns. By varying the activation state and intensity of different laser diodes, the system can adapt to various lighting conditions and requirements without adding complex mechanical or structural components, thus achieving adaptability with minimal increase in device complexity.
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 effectively prevents external laser beam emission, ensuring user and traffic safety while providing dynamic light adjustments and improved efficiency through reduced volume and complexity.
Implementation Method 1
a plurality of laser diodes, at least one light guide element having a laser light incident surface and a laser light exit surface
Implementation Method 2
a phosphor element disposed at one end, adjacent to the laser light exit surface, of the light guide element
Implementation Method 3
a light guide element having a laser light incident surface and a laser light exit surface
Implementation Method 4
a lens disposed at another end, adjacent to the laser light incident surface, of the light guide element
Data Source
AI summary
A laser car lamp includes a plurality of laser diodes, at least one light guide element, a phosphor element, and a lens. The light guide element has a laser light incident surface and a laser light exit surface. The phosphor element is located adjacent to the laser light exit surface of the light guide element, and the lens is located adjacent to the laser light incident surface of the light guide element. In addition, the laser diodes are arranged around the laser light incident surface of the light guide element.