Wavelength Converting Layer for Autonomous Vehicle Sign Detection
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Solution Overview
Problem
Self-driving vehicles face challenges in recognizing and identifying their environment due to limitations in existing sensors, which struggle with near-infrared light scattering and require additional sources for effective image processing.
Innovation Solution
A detecting layer comprising an infrared absorbing material and a wavelength converting material, which absorbs visible light and emits near-infrared light, enhancing the ability of autonomous vehicles to detect road signs and navigate by capturing images with an infrared camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If near-infrared sensors are used for detecting road signs and environmental features, then image processing speed and stability are improved, but additional near-infrared light sources are required when LED lamps are present since they do not emit near-infrared radiation
Solution Approach 1:
The patent applies wavelength converting materials that convert visible light to near-infrared light, enabling road signs and environmental features to emit near-infrared radiation when illuminated by conventional LED lamps. This eliminates the need for separate near-infrared light sources while maintaining the benefits of near-infrared detection
Solution Approach 2:
The wavelength converting material acts as an intermediary between conventional LED light sources and near-infrared sensors. It absorbs visible light from LED lamps and converts it to near-infrared light, bridging the gap between the light source and the sensor without requiring direct near-infrared emission from the LED
2Measurement precision
If conventional sensors are used for environmental recognition, then device complexity is reduced, but measurement precision and reliability are insufficient due to light scattering and dependence on sunlight or weather conditions
Solution Approach 1:
The patent uses wavelength converting materials to transform visible light into near-infrared light, enabling detection in the near-infrared spectrum where less scattering occurs and images are more stable across different weather and lighting conditions
Solution Approach 2:
The patent changes the operational wavelength parameter from visible light to near-infrared light by incorporating wavelength converting materials. This parameter change enables the system to operate effectively in near-infrared spectrum, improving measurement precision while maintaining compatibility with conventional LED lighting
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
This solution improves image processing speed and stability by using near-infrared sensors, allowing autonomous vehicles to accurately detect road signs and navigate regardless of sunlight or weather conditions without additional near-infrared sources.
Implementation Method 1
a wavelength converting material, which absorbs visible light and emits near-infrared light
Implementation Method 2
an infrared absorbing material
Data Source
AI summary
The disclosure provides a detecting composition or layer; a film, a device, a tape and a detecting system having the detecting layer; and methods of use thereof.