Integrated Scanner Reflector LiDAR for Higher Light Reception
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Solution Overview
Problem
Conventional lidar sensors have a high number of parts and reduced light reception efficiency due to the presence of a reflection mirror and a cover area that obstructs the reception area, which affects their size and performance.
Innovation Solution
A lidar sensing device design that integrates the sensing light source unit with the scanner unit, eliminating the need for a separate reflection mirror and reducing the cover area by using a light-transmitting lens unit and a scanner reflector to collimate and reflect light efficiently, thereby reducing the number of parts and enhancing light reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a reflection mirror is positioned to bend the optical path, then the size of the lidar sensor is reduced, but the number of parts increases
Solution Approach 1:
The patent integrates the light source and scanner reflector into a single optical module, eliminating the need for a separate reflection mirror. The scanner reflector serves dual functions: scanning the transmitted light and directing the received light to the detector, thereby reducing the total number of parts while maintaining compact size
2Reliability
If the transmission scope tube and transmission reflector are positioned in the reception area, then the optical path is protected, but light reception efficiency is reduced due to cover area
Solution Approach 1:
The light source is integrated with the scanner reflector into a single optical module, which eliminates the cover area that was previously occupied by separate transmission components. This integration allows the reception area to be fully accessible without obstruction, improving light reception efficiency while maintaining optical path protection through the unified design
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 integrated design reduces the number of parts, enhances light reception efficiency, and increases the maximum detection distance while minimizing the device size, improving the overall performance of the lidar sensor.
Implementation Method 1
a light source positioned within the scope tube to radiate the sensing light toward the light-transmitting reflector
Implementation Method 2
a light-transmitting lens unit positioned on the output side of the light source to collimate the sensing light radiated by the light source so that the sensing light passes through the light-transmitting reflector
Implementation Method 3
a scanner reflector configured to reflect the sensing light radiated by the sensing light source unit toward the target and to reflect the incident light reflected by the target toward the light-receiving lens
Implementation Method 4
a light-receiving lens configured to transmit the incident light reflected by the scanner unit
Implementation Method 5
a light-receiving reflector configured to reflect the incident light passing through the light-receiving lens
Data Source
AI summary
A light detection and ranging (“lidar”) sensing device including a sensing light source unit configured to radiate sensing light, a scanner unit configured to reflect the sensing light radiated by the sensing light source unit toward a target and to reflect incident light reflected by the target and integrated with the sensing light source unit, a light-receiving lens configured to transmit the incident light reflected by the scanner unit, a light-receiving reflector configured to reflect the incident light passing through the light-receiving lens, and an optical detection unit on which the incident light reflected by the light-receiving reflector is incident.