Motor Vehicle Light Module with Adjustable Guide Sections
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Solution Overview
Problem
Existing motor vehicle headlight projection systems face challenges in achieving precise light distribution with small tolerances to avoid undesired color effects, particularly at the edges of the projected light, due to imprecise alignment of optical components.
Innovation Solution
A light module comprising a light source assembly and an optics assembly that can be moved and fixed along an adjustment axis using guide and fastening sections, allowing for precise alignment of the focal point with the shutter edge, eliminating the need for additional fasteners and reducing tolerances through symmetrical arrangement of fastening and guide sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the light source assembly and optics assembly are freely positioned without guidance, then the assembly process is simpler, but the alignment precision of the focal point with the shutter edge deteriorates
Solution Approach 1:
Guide sections are introduced as intermediary components between the light source assembly and optics assembly. These guide sections provide reference surfaces that enable precise alignment of the focal point with the shutter edge during assembly, while the sections themselves are designed to be simple geometric forms that do not significantly increase overall device complexity
Solution Approach 2:
The guide sections are pre-positioned and fixed on the assemblies before the final assembly step. This preliminary positioning establishes the correct alignment relationship between components, allowing the focal point to be precisely aligned with the shutter edge before the optics assembly is permanently mounted
2Stability of the object's composition
If additional fasteners are used to secure the assemblies, then the positioning stability improves, but the device complexity and number of components increases
Solution Approach 1:
The guide sections and fastening functions are merged into a single integrated structure. The guide sections themselves are designed to provide both alignment guidance and positioning stability, eliminating the need for separate fasteners. The reference surfaces on the guide sections serve dual purposes of alignment and securing the assemblies in the correct position
Solution Approach 2:
The guide sections are designed to perform multiple functions: providing alignment reference surfaces for precise positioning, guiding the assembly process, and securing the light source assembly and optics assembly in their final positions. This multi-functionality reduces the total number of components needed while maintaining positioning stability
3Manufacturing precision
If the assemblies are fixed in position without adjustment capability, then the structural simplicity is maintained, but the ability to precisely adjust light distribution edges is lost
Solution Approach 1:
The assembly system is designed with dynamic characteristics, allowing the optics assembly to be adjusted along the adjustment axis relative to the light source assembly. The guide sections enable this controlled movement while maintaining alignment, and after adjustment, the assemblies can be fixed in the optimal position for precise light distribution
Data Source
AI summary
A light module for a motor vehicle light is obtained, comprising a light source assembly comprising at least one light source unit, at least one first guide section, and at least one first fasting section, and an optics assembly comprising at least one optical element, at least one second guide section, and at least one second fastening section, wherein the light source assembly and the optics assembly can be moved toward one another along the adjustment axis (J) in a first state, in particular an adjustment state, by the first guide sections, and wherein the light source assembly and the optics assembly can be fixed in place in relation to one another with the first and second fastening sections in a second state, in particular in an adjusted final assembly state.