Vehicle Lamp Assembly Layout for LiDAR Depth Detection
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Solution Overview
Problem
Existing vehicle headlight assemblies lack integrated depth detection capabilities, limiting their ability to simultaneously provide effective illumination and accurate environmental sensing.
Innovation Solution
A lamp assembly that incorporates a housing with a light source for visible illumination and a LiDAR module for infrared-based distance detection, where the LiDAR module is positioned to capture depth information without interference from the light source, allowing for enhanced space utilization and detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a light source and LiDAR module are integrated in the same headlight assembly, then space utilization is improved, but light interference from the light source degrades LiDAR detection accuracy
Solution Approach 1:
The headlight assembly is segmented into distinct functional zones: a first cavity for the light source and a second cavity for the LiDAR module. The outer lens is correspondingly divided into a first region for visible light projection and a second region for infrared light reception. This spatial segmentation allows both functions to coexist in the same assembly while preventing light interference between the two systems.
Solution Approach 2:
Different regions of the outer lens are assigned different optical properties: the first region is optimized for visible light transmission from the light source, while the second region is optimized for infrared light transmission to the LiDAR module. This local differentiation of optical characteristics enables each component to function optimally without interfering with the other.
2Device complexity
If the light source and LiDAR module are positioned close together, then device complexity is reduced, but heat distribution from the light source degrades LiDAR module performance
Solution Approach 1:
The housing is divided into separate cavities for the light source and LiDAR module, creating physical separation that allows independent thermal management. The first cavity can be designed with heat dissipation features for the high-power light source, while the second cavity maintains a cooler environment suitable for the sensitive LiDAR module, thus managing heat distribution without requiring completely separate assemblies.
3Area of moving object
If the light source projects through a large region of the outer lens, then illumination coverage is improved, but the available region for LiDAR infrared light reception is reduced
Solution Approach 1:
The outer lens is designed with multiple functional regions that operate in different spatial dimensions. The first region handles visible light projection for illumination, while the second region handles infrared light reception for depth detection. By organizing these functions in distinct regions of the lens, the system achieves both wide illumination coverage and adequate LiDAR field of view without one function completely dominating the lens area.
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
Enables simultaneous illumination and depth detection, improving space efficiency and detection accuracy by separating the light source and LiDAR module functions within the headlight assembly, reducing heat distribution and light interference.
Implementation Method 1
A light source is disposed in a first portion of the chamber and is configured to emit visible light through the outer lens to a region exterior to the vehicle
Implementation Method 2
The LiDAR module is configured to capture distance information based on infrared light reflected from the region exterior
Implementation Method 3
A LIDAR module is disposed in a second portion of the chamber and facing the outer lens. The LiDAR module is configured to capture distance information based on infrared light reflected from the region exterior
Data Source
AI summary
A lamp assembly for a vehicle includes a housing. The lamp assembly also includes an outer lens operably coupled with the housing to define a chamber therebetween. A light source is disposed in a first portion of the chamber and is configured to emit visible light through the outer lens to a region exterior to the vehicle. The lamp assembly further includes a LiDAR module disposed in a second portion of the chamber and facing the outer lens. The LiDAR module is configured to capture distance information based on infrared light reflected from the region exterior. The second portion is vertically spaced from the first portion.