Adaptive Headlight Focusing via Servomotor Lens Adjustment
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Solution Overview
Problem
Conventional headlight systems lack the ability to adjust the projection spacing dynamically, resulting in suboptimal light focus and increased dazzling risks, especially in varying traffic situations, due to their afocal design and lack of adaptive focusing mechanisms.
Innovation Solution
A device and method that utilize sensors, such as radar, LiDar, and stereo cameras, to detect objects and adjust the range between the light source and lens using a servomotor, enabling precise focusing of the light projection on specific objects to improve visibility and reduce dazzling, while allowing for independent control and plug-and-play integration with the vehicle's systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional afocal headlight design is used, then the headlight structure is simple, but the light projection cannot be focused dynamically on specific objects
Solution Approach 1:
The patent implements dynamic focusing by making the distance between the light source and lens adjustable through a servomotor-driven alignment mechanism. The light source can be tilted and positioned at variable distances from the lens, transforming the static afocal system into a dynamic one that adapts to different object distances detected by sensors.
Solution Approach 2:
The headlight system integrates multiple functions: it combines the conventional illumination function with sensor-based object detection and automatic focusing capabilities. The alignment mechanism serves both to position the light source for optimal beam pattern and to enable dynamic focusing on detected objects, making the system multi-functional.
2Illumination intensity
If fixed projection spacing is used, then the headlight system is simple, but visibility is suboptimal in varying traffic situations
Solution Approach 1:
The system uses sensors (radar, LiDAR, stereo cameras) to detect objects and their distances, providing feedback to the control apparatus. Based on this feedback, the control apparatus automatically adjusts the light source position and lens distance to focus the projection on the detected objects, optimizing illumination quality dynamically.
Solution Approach 2:
The patent replaces manual or mechanical adjustment mechanisms with an electronically controlled servomotor system driven by sensor feedback. This substitution enables precise, automated focusing without complex manual adjustment mechanisms, improving light focus quality through electronic control.
3Object-affected harmful factors
If conventional headlight control is used, then the system is easy to manufacture, but dazzling risks increase in dynamic traffic conditions
Solution Approach 1:
The system proactively prevents dazzling by detecting objects (especially oncoming vehicles or pedestrians) before the headlight projection reaches them. The sensor apparatus identifies potential dazzle risks, and the control apparatus preemptively adjusts the light projection focus away from these objects, preventing harmful effects before they occur.
Solution Approach 2:
The headlight system dynamically adjusts its projection characteristics based on real-time traffic conditions detected by sensors. By continuously modifying the focus and direction of light projection in response to changing traffic situations, the system reduces dazzling risks to other road users while maintaining optimal illumination for the driver.
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 sharp and adaptive light projection focusing on specific objects, reducing dazzling risks and improving visibility in dynamic traffic conditions, with the ability to maintain focus during relative movements and support independent headlight control module development and replacement.
Implementation Method 1
at least one servomotor (4) for adjusting a range between at least one light source and at least one lens of the headlight in order to focus a projection of the light source on a certain removal dependent on the at least one object detected
Data Source
AI summary
A device and a method for controlling at least one headlight for a motor vehicle involve a control apparatus, at least one sensor configured to detect information about objects in a surrounding area of the motor vehicle and to supply the detected information to the control apparatus. The headlight can be adjusted by the control apparatus depending on at least one detected object. A range between at least one light source and at least one lens of the headlight can be adjusted by the control apparatus in order to adapt a projection of the light source to the at least one detected object.