Vehicle HUD External Projection with Dynamic Light Adjustment
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Solution Overview
Problem
Current vehicle heads-up display (HUD) systems are limited in their ability to project information externally, such as to other vehicles or users, without clear visibility due to environmental factors like moisture or darkness, and lack efficient methods to adjust projection parameters for optimal visibility.
Innovation Solution
A vehicle computing system that receives communication triggers to project light externally, adjusts projection parameters based on detected mediums like surfaces or moisture, and modifies intensity and angle to enhance visibility, allowing for the formation of images or patterns that can encode messages or indicate vehicle location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the HUD projects light externally without adjustment, then the projection can be displayed, but the visibility is insufficient due to environmental factors like moisture or darkness
Solution Approach 1:
The system dynamically adjusts projection parameters including light intensity and projection angle based on real-time detection of environmental conditions such as moisture presence and ambient light levels, transforming a static projection system into an adaptive one that optimizes visibility for varying external conditions
Solution Approach 2:
The system changes physical parameters of the projection including light intensity, projection angle, and focal position based on detected environmental factors, allowing the same HUD system to adapt its output characteristics to different external conditions without hardware modification
2Adaptability or versatility
If the HUD projects light externally, then communication with external users is enabled, but the projection parameters are not optimized for visibility
Solution Approach 1:
The system incorporates environmental sensors that detect conditions such as moisture, ambient light, and surface characteristics, feeding this information back to the control system which then adjusts projection parameters accordingly, creating a closed-loop system that continuously optimizes external projection visibility
Solution Approach 2:
The system performs preliminary detection of environmental conditions and pre-adjusts projection parameters before actual external projection occurs, ensuring optimal visibility is achieved from the start of any external communication event rather than requiring iterative adjustment
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
Enables clear and effective external projection of information, improving visibility in various environmental conditions by adjusting light intensity and angle dynamically, enhancing communication and safety features like vehicle location indication.
Implementation Method 1
One or more projectors included in the HUD system may be controlled by a vehicle computing device. Based on some communication trigger, e.g., a communication from a mobile device external to the vehicle, detection of a moving object external to the vehicle, etc., the vehicle computing device may project light external to the vehicle
Implementation Method 2
A transparent display type of HUD includes a projector that projects an image onto a holographic optical element ('HOE') of a laminated windshield. The laminated windshield has a holographic film layer disposed between glass layers. The holographic film layer defines the HOE.
Data Source
AI summary
A computing device, e.g., in a vehicle, can receive a communication trigger for a heads-up display (HUD) in a vehicle to project light external to a vehicle. The device can then identify a projection parameter to visibly project the light external to the vehicle, e.g., beyond a viewing area on a projection screen in or on the vehicle, and can then cause the HUD to project the light from the HUD to be visible external to the vehicle in response to the communication trigger.