Integrated LiDAR Optics Layout to Reduce Receiver Blockage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LiDAR sensors face reduced light receiving efficiency due to blockage areas caused by the transmission barrel and reflector, leading to increased component count and decreased detection distance.
Innovation Solution
Integration of the receiving and transmitting optical systems into a single optical module, with the sensing light source unit positioned to avoid blocking the light receiving path, and the use of integrated light transmitting and receiving lenses to minimize blockage areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a reflecting mirror is installed to turn the optical path, then the size of the LiDAR sensor is reduced, but the number of components is increased
Solution Approach 1:
The transmitting optical system and receiving optical system are integrated into a single optical module, where the light receiving lens is integrated with the light transmitting reflector. This merging eliminates the need for separate reflecting mirrors to turn optical paths, reducing both the number of components and the overall device size while maintaining compact dimensions.
2Ease of manufacture
If the transmission barrel and transmission reflector are installed, then the light transmitting function is achieved, but a blockage area is produced that reduces light receiving efficiency
Solution Approach 1:
The sensing light source unit is positioned at a location that deviates from the optical path of the light receiving lens and light receiving reflector. By changing the spatial arrangement to a different dimension, the transmission components no longer block the receiving path, eliminating the blockage area while maintaining the light transmitting function.
3Device complexity
If the sensing light source unit is positioned on the optical path, then the structure is simplified, but the light receiving area is blocked
Solution Approach 1:
The sensing light source unit is disposed to deviate from the optical path in a different spatial dimension. This positional adjustment allows the light source to be structurally integrated without blocking the light receiving area, as the transmitting and receiving optical paths are separated in space rather than competing for the same linear path.
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 components and increases light receiving efficiency, thereby enhancing the maximum detection distance of the LiDAR sensing device.
Implementation Method 1
a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit
Implementation Method 2
a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target
Implementation Method 3
a light receiving lens configured to pass the incident light reflected from the scanner unit
Implementation Method 4
a light receiving reflector configured to reflect the incident light passing through the light receiving lens
Data Source
AI summary
A LiDAR sensing device may include: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.