Motor Vehicle Light Module With Multi-Directional Light Guide
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Solution Overview
Problem
Existing motor vehicle daytime running light designs face challenges in meeting regulatory standards for photometry and minimum illumination surface, particularly in ensuring adequate light distribution and intensity without compromising the optical function of collectors.
Innovation Solution
A light module design featuring a support means with a primary light source and a secondary light guide that emits rays through multiple distinct output faces, including a main exit face and additional exit faces oriented non-parallel to the main face, allowing for increased illumination surface and separate optical functions without interfering with the primary collectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a light guide is used to guide light rays from a secondary light source, then the illumination surface is increased and photometric quality is improved, but the device complexity increases due to additional optical components
Solution Approach 1:
The light guide is nested within the headlamp assembly, positioned between the collectors and the support means. The secondary light source is integrated into the support means, creating a compact nested structure where multiple optical components coexist without interfering with each other's functions.
Solution Approach 2:
The light guide features multiple output faces oriented in different directions (first direction for main illumination, second direction for collector illumination). This multi-dimensional light distribution approach increases the effective illumination surface area without requiring a larger single-plane surface.
2Area of stationary object
If additional exit faces are added to the light guide, then the illumination surface meets regulatory standards, but the manufacturing precision requirements increase
Solution Approach 1:
The light guide is segmented into multiple output faces (first output face and second output face) with distinct orientations. Each face is optimized for its specific function, allowing independent optimization of each surface while maintaining overall manufacturing feasibility through modular design.
3Area of stationary object
If the light guide is positioned near the collectors, then the illumination surface is expanded, but the optical function of the collectors may be interfered with
Solution Approach 1:
Different regions of the optical system are assigned different functions: the collectors maintain their primary function of directing light from the primary light source, while the light guide with its multiple output faces provides additional illumination in specific directions. The secondary light source is positioned to illuminate the light guide without interfering with the collectors' optical path.
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 design enhances photometric quality and expands the illumination surface by directing light rays towards collectors, meeting regulatory standards while maintaining compactness and performance across various lighting functions.
Implementation Method 1
a light guide capable of guiding the rays emitted by a secondary light source from an input face to at least two distinct and adjacent output faces
Implementation Method 2
the light guide is made of a material capable of being traversed by light, such as a transparent material
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a light module (2) comprising a support means (4) for at least one light ray collector (6), emitted by a primary light source, in the vicinity of which is disposed a light guide (20) adapted to guide the rays emitted by a secondary light source (10) from an input face to at least two distinct and adjacent output faces. A main output face (64) is distinguished, through which the rays pass in a first direction, and at least one additional output face (66) is oriented such that the light rays exiting the guide through this additional output face are directed towards the collector in a second direction distinct from the first. Said at least one additional output face (66) is adjacent to said main output face (64).