Inclined Headlamp Module Layout for Compact Cut-Off Projection
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Solution Overview
Problem
Existing lighting modules for motor vehicles face challenges in compact horizontal integration due to limited horizontal space, especially in configurations where vertical or inclined space is more abundant.
Innovation Solution
A lighting module design comprising multiple sub-modules with reflective surfaces and optical devices positioned on an inclined plate, utilizing flat mirrors and projection lenses to project light beams with a horizontal cut-off, allowing for compact horizontal integration while utilizing vertical or inclined space effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lighting module with multiple sub-modules positioned side-by-side is used to form a cut-off light beam, then the horizontal space requirement increases, but the lighting performance is improved
Solution Approach 1:
The patent repositions multiple light motors and their associated optical devices along the vertical dimension rather than horizontally. The sub-modules are stacked vertically with their optical axes aligned, allowing the formation of a combined cut-off light beam while minimizing horizontal footprint. This dimensional transition from horizontal to vertical arrangement directly resolves the contradiction between lighting performance and horizontal compactness.
2Length of moving object
If the projection lenses are aligned vertically, then the horizontal compactness is improved, but the alignment precision and optical performance may deteriorate
Solution Approach 1:
The patent divides the lighting module into multiple independent sub-modules, each containing a light motor and optical device. These segmented sub-modules are positioned vertically one above another, with each maintaining its own optical axis. This segmentation allows for modular assembly and alignment, reducing the complexity of achieving precise alignment compared to a fully integrated horizontal design.
Solution Approach 2:
The patent employs identical or similar optical devices (projection lenses and flat mirrors) across multiple sub-modules. This universality allows for standardized manufacturing and assembly procedures, where each sub-module can be pre-aligned and tested independently before being integrated into the final vertical configuration, thereby maintaining alignment precision while achieving horizontal compactness.
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 a high-performance lighting module with a limited horizontal size, simplifying construction and assembly, and facilitating integration into the vehicle silhouette by aligning projection lenses in a direction that can be inclined relative to the vertical.
Implementation Method 1
a first collector with at least one reflective surface which can reflect rays of light emitted by the at least one source of light of the first light motor in a first reflected light beam
Implementation Method 2
a flat mirror which can return the corresponding first or second reflected light beam towards the corresponding projection lens
Data Source
AI summary
The invention relates to a lighting module including a first sub-module with a first light motor and a first optical device that is able to project a first light beam from the first light motor as a first projected light beam, a second sub-module with a second light motor and a second optical device that is able to project a second light beam from the second light motor as a second projected light beam, a mounting plate that is inclined at an angle a with respect to a horizontal plane, about an inclination axis, and in which the first and second light motors are disposed one behind the other, and a plane mirror that is able to reflect the corresponding first or second light beam towards a corresponding projection lens.