Vehicle Lamp Leveling Control for Distortion-Free Image Projection
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Solution Overview
Problem
Vehicle lighting devices struggle to efficiently project visual information to varying targets and distances due to distortion issues when the projection surface or projection distance changes, limiting the effectiveness of information transmission to drivers and pedestrians.
Innovation Solution
A lamp device with an optical unit, leveling unit, object detection unit, driving condition determination unit, and control unit that adjusts the projection surface and distance based on surrounding environment information and vehicle driving conditions, using an image adjusting unit to correct distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lighting device projects visual images to various targets and distances, then the information transmission capability is improved, but the image distortion increases
Solution Approach 1:
The patent implements dynamic adjustment of the optical axis angle based on detected object distance and type. The control unit continuously monitors surrounding environment information and adjusts the projection angle in real-time, transforming the static lighting system into a dynamic one that adapts to varying projection conditions, thereby maintaining image quality across different targets and distances
Solution Approach 2:
The system changes the projection parameter (optical axis angle) based on detected object characteristics. By adjusting the angle parameter according to object distance and type, the system optimizes projection accuracy for each specific condition, resolving the contradiction between versatility and image precision
2Device complexity
If the lighting device provides visual images based only on driver perspective, then the system complexity is reduced, but the adaptability to different targets is limited
Solution Approach 1:
The lighting device performs self-adjustment by automatically detecting objects and autonomously modifying its projection parameters. The system uses its own detection capabilities to determine the appropriate optical axis angle without external intervention, enabling multi-target adaptability while maintaining relatively simple operation
Solution Approach 2:
The lighting device is designed to serve multiple functions: it can project images to the driver, pedestrians, and other vehicles based on detected target types. This multi-functionality is achieved through the control unit's ability to select different projection angles according to the detected target, expanding adaptability without proportionally increasing system complexity
Data Source
AI summary
A lamp device includes: an optical unit that is provided in a vehicle and irradiates light; a leveling unit configured to adjust an optical axis of the optical unit in a vertical direction; an object detection unit configured to detect an object around the vehicle to generate surrounding environment information; a driving condition determination unit configured to determine a driving condition of the vehicle; and a control unit configured to control the leveling unit, in which the control unit determines a projection surface of the optical unit based on the surrounding environment information and the driving condition and controls a projection distance of light by the leveling unit.