Displaceable Headlamp Aiming Surface for Long-Range Alignment
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Solution Overview
Problem
Conventional headlamp aiming systems in manufacturing/assembly settings are limited by short aiming distances, which magnify vertical aim errors and do not integrate well with current production line environments, leading to inaccuracies in headlamp beam alignment.
Innovation Solution
A vehicle headlamp aiming system featuring a displaceable aiming surface and an imaging system that allows for longer aiming distances, incorporating a displaceable indexing aim box and computing devices to calculate and correct headlamp aim errors, enabling precise alignment at regulatory distances such as 25 feet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a short aiming distance (2-5 feet) is used for headlamp analysis in manufacturing, then the equipment integrates well with current production line settings, but vertical aim errors are magnified at audit distances
Solution Approach 1:
The patent transitions from a conventional 2D planar aiming setup to a 3D spatial configuration by extending the aiming distance along the fore-aft dimension. The aiming surface is positioned at distances of 25 feet or more from the headlamp, creating a scaled-up measurement geometry that reduces angular error magnification while still fitting within production line footprints through strategic spatial arrangement.
Solution Approach 2:
The patent employs a displaceable aiming surface that can move between a retracted position (allowing vehicle passage) and an extended position (providing the long baseline for accurate aiming). This dynamic mechanism enables the system to achieve high measurement precision when needed while maintaining integration with the production line's continuous flow operation.
2Measurement precision
If a long aiming distance (25 feet or more) is used for headlamp analysis, then vertical aim errors are reduced, but the equipment complexity and space requirements increase
Solution Approach 1:
The displaceable aiming surface provides a space-efficient solution by retracting when not in use, allowing vehicles to pass through the production line without obstruction. When aiming operations are performed, the surface extends to the required 25+ foot distance, providing high measurement precision without permanently occupying excessive space or requiring a permanently complex structure.
Solution Approach 2:
The aiming surface serves multiple functions: it provides the long baseline for accurate photometric measurement, acts as a reflective surface for beam pattern analysis, and when retracted, allows uninterrupted vehicle flow through the production line. This multi-functionality reduces the need for separate dedicated structures for each function.
3Manufacturing precision
If a long aiming distance is used, then headlamp beam alignment accuracy is improved, but the integration with current assembly line environment becomes difficult
Solution Approach 1:
The displaceable aiming surface dynamically adapts to the production line's operational requirements by retracting during vehicle assembly and movement, and extending only when photometric testing is performed. This allows the system to provide high alignment accuracy without permanently altering the production line's layout or interfering with continuous manufacturing operations.
Solution Approach 2:
The aiming surface and imaging system are integrated within the existing production line footprint, with the aiming surface nested within the vehicle assembly area. The system fits within the available space by utilizing the vertical and lateral dimensions of the production environment, extending the baseline along the fore-aft dimension without requiring a separate dedicated facility.
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
Significantly reduces vertical and other aiming errors by allowing longer aiming distances within existing production line settings, enhancing accuracy and reducing error magnification, thus improving headlamp beam alignment efficiency.
Implementation Method 1
The headlamps are actuated, and the resulting illumination pattern is analyzed
Data Source
AI summary
A system for aiming a headlamp of a vehicle includes a displaceable aiming surface and an imaging system. The imaging system includes a translatable aim box carrying at least one headlamp imager oriented to capture images of a single headlamp and/or one or more vehicle features adjacent to the single headlamp. At least one fixed imager is oriented to capture one or more images of the displaceable aiming surface. The translatable aim box may be configured to translate between the single headlamp and another headlamp. One or more computing devices are configured to perform methods for headlamp aim correction using the described system. Methods for headlamp aim correction are described.