Vehicle Lamp Projection Control to Avoid HUD Information Overlap
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Solution Overview
Problem
Head-Up Displays (HUD) and road surface drawing systems in vehicles often overlap, making it difficult for drivers to accurately receive information, and existing systems require significant eye movement and focus adjustments, leading to potential information overlap and reduced visibility.
Innovation Solution
A lamp system with a variable light distribution lamp and controller that cooperates with the HUD to draw patterns on the road surface with adjustable intensity and position, ensuring minimal overlap with the HUD display and optimizing information transmission to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the HUD displays information in the driver's line of sight, then the eye movement distance is reduced, but the driver may not notice the information due to focus requirements
Solution Approach 1:
The patent adds a spatial dimension by projecting information onto the road surface in addition to the HUD display. This creates a multi-dimensional information presentation where the same or complementary information appears both in the air (HUD) and on the ground (road surface projection), allowing the driver to receive information through multiple spatial channels without increasing eye movement distance
Solution Approach 2:
The patent uses luminance intensity variations and color differentiation to distinguish between HUD information and road surface projection information. The variable light distribution lamp adjusts brightness and color characteristics to ensure that road surface drawings are visually distinct from HUD displays, preventing confusion while maintaining both information channels
2Adaptability or versatility
If the HUD display and road surface drawing are executed at the same time, then comprehensive information is provided, but the information overlaps and becomes difficult to interpret
Solution Approach 1:
The patent applies different visual characteristics to different spatial locations. The HUD display maintains its traditional semi-transparent overlay characteristics in the upper field of view, while the road surface projection uses high-contrast luminous patterns on the ground. Each location has optimized visual properties suitable for its viewing conditions, preventing overlap confusion
Solution Approach 2:
The system dynamically adjusts the light intensity distribution of the road surface projection based on driving conditions, ambient light levels, and detected driver attention state. The variable light distribution lamp can modify brightness, pattern intensity, and even temporal characteristics (such as blinking or pulsing) to optimize information delivery without creating overlap with HUD displays
3Illumination intensity
If a variable light distribution lamp is used to draw patterns on the road surface, then information visibility is improved, but the system complexity increases
Solution Approach 1:
The variable light distribution lamp is designed to perform multiple functions: it serves as both a road surface projection device and a supplemental illumination source. The same optical system that projects patterns onto the road can also provide adaptive lighting for different driving conditions, reducing the need for separate dedicated components and thereby limiting the increase in system complexity
Solution Approach 2:
The patent integrates the variable light distribution lamp with the existing headlamp assembly and control systems. The lamp shares common power supply, control electronics, and housing structures with other vehicle lighting systems, merging multiple functions into a single integrated unit that minimizes additional complexity while maximizing road surface information visibility
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 reduces eye movement and focus requirements for drivers, providing clear and accurate information transmission by adjusting the pattern position based on driver settings and HUD status, preventing overlap and enhancing visibility.
Implementation Method 1
a variable light distribution lamp structured to irradiate a beam to a road surface with a variable light intensity distribution so as to draw a pattern
Data Source
AI summary
A lamp system is mounted on a vehicle provided with a HUD system. A variable light distribution lamp irradiates a beam to a road surface with a variable light intensity distribution so as to draw a pattern. A controller controls the variable light distribution lamp in cooperation with a HUD system.