Motor Vehicle Lighting Device Lidar Integration
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Solution Overview
Problem
The integration of lidar systems into motor vehicle lighting devices poses a challenge in maintaining a conventional appearance while effectively positioning and protecting the lidar components from stray light and ensuring precise object detection.
Innovation Solution
A motor vehicle lighting device design that incorporates a lidar detector and emitter within a module housing, utilizing a light source for staging lighting to conceal the lidar components, with a band pass filter and panel to prevent stray light, and optimally positions the lidar components for precise data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lidar components are integrated into the lighting device, then object detection capability is improved, but the conventional appearance is compromised
Solution Approach 1:
The patent combines the lidar detector and emitter with the lighting device components (lens and light source) into a single integrated module housing. The detector and emitter are positioned within the housing such that they share the same optical path and physical space as the lighting components, allowing both functions to coexist in a unified structure that maintains conventional headlight appearance while enabling lidar functionality.
2Illumination intensity
If lidar detector is exposed to visible light from light source, then staging lighting effect is achieved, but stray light affects lidar detection precision
Solution Approach 1:
The patent applies different optical properties to different parts of the system. The light source is designed to emit visible light for staging lighting effects, while the band pass filter is positioned in front of the lidar detector to selectively transmit only the specific wavelength of the laser beam while blocking visible light from the light source. This creates localized optical quality differences that allow both functions to operate effectively in their respective zones.
Solution Approach 2:
A band pass filter is introduced as an intermediary component between the light source and the lidar detector. This filter acts as a mediator that allows the laser beam to pass through to the detector while blocking the visible light from the light source that would otherwise interfere with the detector. The filter enables coexistence of the lighting and lidar functions by mediating their optical interaction.
3Illumination intensity
If light source is positioned to illuminate roadway, then illumination function is improved, but brightness limits may be exceeded
Solution Approach 1:
The lighting device is segmented into multiple independent light sources, each with specific functions. The first light source is dedicated to roadway illumination and can be positioned and controlled to meet brightness requirements, while the second light source provides staging lighting for the lidar components. This segmentation allows each light source to be optimized for its specific function without compromising overall system performance or legal compliance.
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 allows for inconspicuous integration of lidar systems into vehicle lighting, maintaining a conventional appearance while ensuring precise object detection and compliance with legal brightness limits, reducing the impact of stray light on lidar performance.
Implementation Method 1
In order to protect the lidar detector particularly effectively from undesirable stray light that occurs on the LIDAR detector from the light source and/or the sun, a band pass filter can be intended in front of the lidar detector
Implementation Method 2
the visible light is blasted against a facility that leads the visible light towards one component path and/or to the lens and that the furnishings preferably as a light guide ring
Implementation Method 3
The light beam can be directed and/or reflected in particular below the light-dark boundary, so that hardly any light above the light-dark border affects the said overhead values
Implementation Method 4
The lidat detector can be granted a laser beam through an optical lens
Implementation Method 5
The light source for visible light can in particular be a luminous emission or consist of several light -emitting diodes
Data Source
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AI summary
The invention relates to a motor vehicle lighting device with a LIDAR detector (22) and a light source (32) arranged within a module housing (2), wherein a laser beam can be directed to the LIDAR detector (22) through an optical lens (38), wherein visible light can be directed out of the module housing (2) through the lens (38) by means of the light source (32), characterized in that a LIDAR emitter (10) is arranged within the module housing (2) with which the laser beam can be emitted.