Vehicle Headlamp Primary Optics Curved Border Distortion Correction
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Solution Overview
Problem
Current headlight systems suffer from disruptive distortions due to imaging optics, leading to unwanted curvatures and illumination outside permitted road traffic areas, which are costly to correct and reduce efficiency.
Innovation Solution
The primary optics are designed with a continuously curved common border for all light guiding elements, which reduces distortion by acting as both a light guide and distortion corrector within the same component, eliminating the need for upstream diaphragms and minimizing diffraction effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional imaging optics are used in headlight systems, then light can be projected onto the road, but disruptive distortions occur leading to unwanted curvatures and illumination outside permitted road traffic areas
Solution Approach 1:
The patent applies preliminary action by pre-correcting distortion in the primary optics before light reaches the imaging optics. The asymmetric design of light guiding elements and their strategic positioning anticipate and compensate for the distortion that would otherwise be introduced by the imaging optics, thereby pre-establishing accurate light projection without requiring post-correction
2Object-affected harmful factors
If upstream diaphragms are used to correct distortion, then distortion can be reduced, but production costs increase and optical efficiency decreases
Solution Approach 1:
The patent merges the distortion correction function into the primary optics itself, combining light guidance and distortion compensation into a single integrated component. This eliminates the need for separate upstream diaphragms, thereby reducing production complexity while maintaining distortion correction effectiveness
Solution Approach 2:
The primary optics is designed to perform multiple functions simultaneously: it guides light from the light source and concurrently corrects distortion through its asymmetric geometry. This multi-functionality eliminates the need for additional dedicated distortion correction components, simplifying the overall system
3Object-affected harmful factors
If upstream diaphragms are used to correct distortion, then distortion can be reduced, but optical efficiency is reduced due to light loss
Solution Approach 1:
By merging distortion correction into the primary optics, the patent eliminates the need for upstream diaphragms that would block and waste light. The integrated design allows all light from the source to be utilized effectively, maintaining optical efficiency while achieving distortion correction
4Measurement precision
If the number of light sources is increased to improve resolution, then light image resolution improves, but device complexity and cost increase
Solution Approach 1:
The patent applies local quality by creating asymmetric light distributions through strategically positioned light guiding elements rather than uniformly increasing the number of light sources. This allows high resolution in critical areas while maintaining system simplicity
Solution Approach 2:
The patent employs curved light guiding elements with specific geometric profiles that focus and shape light paths. This curvature-based approach achieves high resolution light projection without requiring a proportional increase in the number of light sources, as each element is optimized to deliver precise light control
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
This design minimizes distortion across a wide range, maintains optical efficiency, and simplifies production by integrating distortion correction into the primary optics, reducing costs and complexity.
Implementation Method 1
each light guide element having a light entry surface for coupling in light comprising at least one light source, and a light exit surface for decoupling light
Implementation Method 2
light guiding elements... with each light guide element having a light entry surface for coupling in light
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
The invention relates to a headlight (1) for a vehicle, comprising at least one light source (2), a primary optical system (3) for generating a lighting image, and an optical imaging system (4). The lighting image can be projected onto the roadway as a light image by means of the optical imaging system (4), and the primary optical system (3) has a plurality of light guiding elements (5) and a support layer (6). The light guiding elements (5) are arranged on a rear face (6r) of the support layer (6), and the lighting image can be generated on a front face (6v) of the support layer (6). The light guiding elements (5) are arranged adjacently to one another or in an overlapping manner in a row in the axis direction (y) and form at least one line (7). Each light guiding element (5) has a light inlet surface (5e) for coupling in light from at least one light source (2) and a light outlet surface (5a) for coupling out light. The totality of the light guiding elements (5) of the at least one line (7) have a common border (8) which is constantly curved on at least one face oriented substantially along the axis direction (y) and together with the support layer (6) forms a section curve with a curved curve course (9, 10).