Vehicle Lighting Data Compression for Distortion-Corrected HD Beams
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Solution Overview
Problem
Current vehicle lighting systems face challenges with interference between light sources causing crosstalk, optical and light aberrations leading to unreliable high-definition projections, and limited bandwidth in data transmission networks, making it difficult to manage and project precise high-definition light beams efficiently.
Innovation Solution
A lighting system comprising a control unit, data compression and decompression units, and a decision-making unit that generates and adjusts image data to compensate for optical distortions and inhomogeneities, allowing reliable projection of high-definition light beams over heterogeneous transmission channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light sources are used to generate high-definition light beams, then the resolution and definition of the light beam is improved, but interference and crosstalk between neighboring light sources increases
Solution Approach 1:
The patent introduces an optical combiner as an intermediary component that receives light from multiple independent light sources and combines them into a single collimated output beam. This mediator prevents direct interference between neighboring light sources by spatially separating their paths until combination, thereby maintaining high resolution while eliminating crosstalk.
Solution Approach 2:
The patent employs multiple light sources arranged in a nested or layered configuration where each light source operates independently but contributes to the same output beam. The optical combiner integrates these nested light sources, allowing high-definition projection without the harmful interference that would occur if sources were placed in direct proximity.
2Measurement precision
If the number of pixels in the light source is increased to achieve high resolution, then the light beam definition is improved, but the data transmission bandwidth requirement increases
Solution Approach 1:
The patent segments the high-resolution image data into multiple lower-resolution sub-images, each corresponding to a individual light source. By dividing the total pixel burden across multiple independent sources, each transmitting fewer pixels, the system achieves high-definition output while reducing the data transmission requirement for each channel.
Solution Approach 2:
The patent merges the output of multiple light sources through an optical combiner to create a single high-resolution beam. This allows the system to achieve high pixel counts at the output by combining lower pixel count inputs, thereby reducing individual data transmission requirements while maintaining high overall resolution.
3Volume of moving object
If light sources are placed in close proximity to achieve compact design, then the system size is reduced, but interference between elementary beams increases
Solution Approach 1:
The optical combiner serves as a mediator that allows light sources to be positioned in close proximity for compact design while preventing beam interference. The combiner's optical elements (such as dichroic mirrors or beam combining crystals) selectively combine wavelengths or spatial paths, enabling compact packaging without the crosstalk that would result from direct beam overlap.
4Manufacturing precision
If optical lenses are used to project precise contours, then the lighting function is improved, but optical aberrations and inhomogeneities increase
Solution Approach 1:
The patent applies local quality correction by using individual controllable light sources that can be independently adjusted to compensate for optical aberrations in different regions of the projection field. Each light source or pixel can be fine-tuned to correct for local inhomogeneities, maintaining reliable and precise contour projection across the entire field of view.
Solution Approach 2:
The patent employs parameter changes by dynamically adjusting the intensity, position, or wavelength parameters of individual light sources to compensate for optical aberrations. This allows real-time correction of projection inhomogeneities, maintaining high reliability and precision despite the presence of optical lenses.
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 system enables reliable projection of high-definition light beams by pre-compensating for optical distortions and efficiently managing data transmission over limited bandwidth networks, ensuring precise and adaptive lighting functionalities across various vehicle architectures.
Implementation Method 1
Micromirrors, the position of which is controlled by way of piezoelectric elements, are oriented so as to selectively reflect an incident light beam
Implementation Method 2
Micromirrors, the position of which is controlled by way of piezoelectric elements
Implementation Method 3
The light emitted by a matrix light source also generally passes through an optic comprising at least one optical lens, in order to project the desired contour ahead of the motor vehicle
Data Source
AI summary
A lighting system for a motor vehicle includes at least one lighting module capable of projecting lighting functions from image data, a control unit connected to the at least one lighting module by a data transmission channel and configured to generate a control image intended for the lighting module as a function of the optical features of the lighting module and of a setpoint datum. The lighting system also includes compression and decompression units to compress and decompress the image data while the data image travels between the control unit and the at least one lighting module.