LiDAR Device Matrix Array Alignment Fixer
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Solution Overview
Problem
LiDAR devices face limitations in increasing laser output power while maintaining safety for the human eye and ensuring precise alignment of optic modules, which affects their measurement distance and accuracy.
Innovation Solution
A LiDAR device design featuring differently disposed laser emitting and detecting arrays, along with a processor for type determination of detection values based on depth conditions, and a mechanism using emitting and detecting optic modules with fixers to maintain alignment and enhance positional relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If laser output power is increased to extend measurement distance, then measurement distance is improved, but safety for human eye deteriorates
Solution Approach 1:
The laser emitting array is divided into multiple emitting units arranged in a matrix pattern, allowing selective activation and distributed power output. This segmentation enables the system to achieve extended measurement distance through coordinated multiple units while keeping individual unit power levels safe for human eyes.
Solution Approach 2:
The patent transitions from a single laser source to a two-dimensional matrix array of emitting units. This dimensional expansion allows the system to distribute laser power across multiple spatial locations, achieving extended range through spatial diversity while maintaining safe power density at each emission point.
2Measurement precision
If optic module alignment is made more precise to improve measurement accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The emitting optic module and detecting optic module are pre-aligned during assembly using the fixer structure. The fixing members permanently secure the optic modules to the substrate at predetermined positions, establishing accurate alignment before the device enters service. This preliminary alignment action eliminates the need for complex real-time adjustment mechanisms.
Solution Approach 2:
The patent employs a symmetric matrix arrangement where emitting units and detecting units are positioned in corresponding locations. This copied spatial pattern simplifies alignment by ensuring that each emitting unit has a corresponding detecting unit at a predictable position, reducing the complexity of alignment procedures.
3Measurement precision
If laser emitting array and detecting array are disposed differently to optimize performance, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements an asymmetric disposition where the laser emitting array and detecting array are arranged in different matrix patterns or orientations. This asymmetric configuration optimizes the detection geometry for specific measurement scenarios, improving precision by better matching the optical paths while the regular matrix structure maintains manufacturing simplicity.
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 solution allows for increased measurement distance while ensuring safety and maintaining precise alignment, enhancing the LiDAR device's accuracy and efficiency in distance measurement and object detection.
Implementation Method 1
a laser emitting unit disposed to correspond to a first detecting unit of the laser detecting array and a laser detecting unit disposed to correspond to a second detecting unit of the laser detecting array
Implementation Method 2
light detection and ranging (LiDAR) device for measuring a distance using a laser
Data Source
AI summary
A light detection and ranging (LiDAR) device comprising: a laser emitting chip configured to emit laser, a laser detecting chip configured to detect laser, an emitting optic module configured to guide laser generated from the laser emitting chip to the outside of the LiDAR device, a detecting optic module configured to guide laser received from the outside of the LiDAR device to the laser detecting chip, an emitting optic holder located between the laser emitting chip and the emitting optic module, and an at least one emitting optic fixer located between the emitting optic holder and the emitting optic module, wherein the at least one emitting optic fixer is configured to fix a relative position between the laser emitting chip and the emitting optic module.