Offset Projection Lenses for Motor Vehicle Headlight Modules
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Solution Overview
Problem
Existing light modules for motor vehicle headlights face challenges in adapting to available installation space and design specifications, particularly in the corner regions of vehicles with a strong sweep and/or inclination, while maintaining effective light distribution and preventing glare.
Innovation Solution
A light module with offset arrangement of projection lenses and light sources, combined with a common carrier element and optical attachments, allows for precise positioning and compensation of intersection lengths, enabling adaptation to vehicle geometry and enhancing light distribution control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common projection lens is used for all light sources, then the optical unit is simpler and more compact, but the light distribution cannot be optimized for each light source and the module cannot adapt to sweep and inclination configurations
Solution Approach 1:
The common projection lens is divided into multiple individual projection lenses, with each lens assigned to a specific light source. This segmentation allows each light source to have its own optimized optical path and enables the system to adapt to sweep and inclination configurations by adjusting the position and orientation of individual lenses rather than moving a single common lens.
2Ease of manufacture
If light sources are arranged in a fixed pattern, then the manufacturing process is simpler, but the light distribution cannot be optimized for specific installation spaces and vehicle geometries
Solution Approach 1:
The projection lenses are designed to be positionable and adjustable within the optical unit, allowing the light distribution pattern to be dynamically adapted to different installation spaces and vehicle geometries. This dynamic positioning capability enables optimization for specific applications while maintaining a relatively simple manufacturing process for the modular lens components.
3Stability of the object's composition
If a single common carrier element is used for all light sources, then the structural integration is better and alignment is easier, but the positioning precision for each light source relative to its projection lens is reduced
Solution Approach 1:
The common carrier element is segmented into multiple individual carrier elements, with each carrier element holding a specific light source and its corresponding projection lens. This segmentation maintains structural integration through the modular carrier design while enabling precise positioning of each light source relative to its projection lens, as each module can be independently aligned and positioned.
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 solution enables better illumination of the vehicle's forward region, reduces glare by blocking specific areas, and improves the visual appeal of the headlight design, while maintaining efficient light emission and distribution.
Implementation Method 1
light emitted by the light sources is emitted substantially in the direction of the main emission direction
Implementation Method 2
a projection optical unit that includes at least two projection lenses, each assigned to a respective light source
Data Source
AI summary
A motor vehicle headlight and light module for such a motor vehicle headlight, the light module having a plurality of light sources and a projection optical unit. The projection optical unit imaging the light emitted by the light sources as a resulting light distribution of the light module on a roadway in front of the motor vehicle. The plurality of light sources are arranged next to one another and/or one above another on a common carrier element. The projection optical unit includes a plurality of projection lenses, each assigned to a respective light source. The projection lenses are arranged offset with respect to one another in relation to a main emission direction of the light module.