Concave Laser Radar Module Arrangement for Compact 3D Scanning
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Solution Overview
Problem
Conventional laser radar systems require multiple light transmission and reception modules for panoramic scanning, making them bulky, expensive, and difficult to mount inside moving objects, and they struggle to efficiently obtain 3-dimensional images due to structural limitations.
Innovation Solution
A laser radar apparatus with a reduced number of light transmission and reception modules arranged concavely in an opposite direction to the scanning direction, where each module includes a transmitter to deflect and irradiate a laser beam and a receiver to detect it, with the modules operated in alternating time frames to prevent overlap and enhance scanning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light transmission and reception modules are provided for panoramic scanning, then the scanning coverage is improved, but the device complexity and cost increase
Solution Approach 1:
The patent applies the dynamics principle by making the light transmission and reception modules rotatable around a central axis. This rotational capability allows a limited number of modules to dynamically cover different angular positions, achieving panoramic scanning coverage without requiring a large static array of modules. The modules can be positioned at different angles to scan different regions, transforming a static multi-module system into a dynamic single-module-or-few-modules system.
Solution Approach 2:
The patent implements universality by designing each light transmission and reception module to perform multiple functions: transmitting laser beams, receiving reflected light, and rotating to different positions. This multi-functionality allows a small number of versatile modules to replace what would otherwise require many specialized fixed modules, reducing overall system complexity while maintaining comprehensive scanning capability.
2Measurement precision
If a module rotation mechanism is added to obtain 3-dimensional images, then the imaging capability is improved, but the device complexity and mounting difficulty increase
Solution Approach 1:
The patent applies merging by combining the light transmission function, light reception function, and rotation function into a single integrated module. This unified design eliminates the need for separate transmission modules, reception modules, and rotation mechanisms, thereby reducing device complexity while maintaining 3-dimensional imaging capability through coordinated operation of the integrated modules.
3Adaptability or versatility
If multiple cameras are provided to increase FOV in wide angle laser radar, then the Field of View is improved, but the device complexity and size increase
Solution Approach 1:
The patent uses dynamics by enabling the light transmission and reception modules to rotate to different angular positions, allowing each module to dynamically access different fields of view. This rotational capability replaces the need for multiple fixed cameras, achieving a wide effective FOV with a compact apparatus that occupies minimal space.
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 configuration reduces the number of modules needed, allows for a compact, irrotational design that can be mounted inside moving objects, and enables the capture of 3-dimensional images with improved scanning efficiency and reduced costs.
Implementation Method 1
a light deflector configured to deflect the laser beam output from the light source and to irradiate the laser beam to the target
Implementation Method 2
a light detector configured to detect the laser beam reflected from the target as the light deflector irradiates the laser beam
Implementation Method 3
a light filter configured to filter the laser beam
Implementation Method 4
a light receiving lens configured to form a focus to output the laser beam to the light detector
Data Source
AI summary
Provided herein a laser radar apparatus including a plurality of light transmission and reception modules arranged concavely in an opposite direction to a scanning direction based on a surface vertical to the scanning direction, wherein each of the plurality of light transmission and reception modules comprises a transmitter configured to deflect a laser beam and to irradiate the deflected laser beam to a target; and a receiver configured to receive the laser beam reflected from the target.