Vehicle Illumination Module with Optical Beam Division
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Solution Overview
Problem
Existing environment illuminating devices for motor vehicles fail to decouple the requirements for generating symbols and light patterns or homogeneous surfaces, prioritizing readability for symbols over planar illumination, which is not suitable for large-area light distributions.
Innovation Solution
The environment illuminating device employs one or more light modules with imagers that generate light radiation for symbols and light patterns/homogeneous surfaces separately, using optical devices to divide the radiation into disjoint partial beams, allowing for independent handling and projection of symbols and large-area light distributions with different luminance and area requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light radiation is used to generate both symbol and light pattern together, then device complexity is reduced, but the requirements for readability of symbol and planar illumination of light pattern cannot be simultaneously satisfied
Solution Approach 1:
The light radiation from the imager is divided into two separate partial radiations using an optical device. The first partial radiation is used exclusively for generating the symbol with high readability requirements, while the second partial radiation is used for generating the light pattern or homogeneous surface with planar illumination requirements. This segmentation allows each partial radiation to be optimized independently for its specific function, resolving the contradiction between device complexity and adaptability.
2Adaptability or versatility
If light radiation is divided into separate partial radiations for symbol and light pattern, then different requirements can be satisfied, but device complexity increases
Solution Approach 1:
An optical device is introduced as an intermediary component between the imager and the ground projection. This optical device divides the light radiation into first and second partial radiations, enabling independent optimization for symbol readability and light pattern planar illumination. The intermediary optical device manages the complexity by providing a clear separation mechanism while maintaining overall system integration.
3Measurement precision
If symbol is generated closer to light outlet opening, then readability is improved, but area coverage for light pattern is reduced
Solution Approach 1:
The first illumination region containing the symbol is positioned closer to the light outlet opening to ensure high readability and sharp image quality. The second illumination region containing the light pattern or homogeneous surface is positioned farther away to achieve larger area coverage. Each region is optimized for its specific quality requirement, with the symbol region prioritizing clarity and the light pattern region prioritizing area coverage.
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 solution enables the generation of clear, readable symbols and large-area light patterns/homogeneous surfaces simultaneously, addressing the distinct requirements of each by separating the light radiation and using appropriate projection optical units, resulting in enhanced visibility and aesthetic appeal.
Implementation Method 1
an optical device on which the light radiation of the imager is incident. This optical device is configured to divide the light radiation of the imager so that a first partial radiation and a second partial radiation result, which are disjoint from one another
Data Source
AI summary
A motor vehicle includes an environment illuminating device for emitting light toward the ground in the environment of the motor vehicle. The environment illuminating device includes one or more luminous modules, each of which is configured to generate a light distribution on the ground. A respective luminous module includes an image generator configured to generate light radiation from light from an illuminant, the light radiation containing two-dimensional image information concerning, firstly, a symbol representation and, secondly, a light pattern and/or a homogeneous area with a substantially constant luminance. Furthermore, the respective luminous module includes an optical device, on which the light radiation from the image generator is incident.