Modular Laser Radar Optical Design with Wedge Lens
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Solution Overview
Problem
Conventional laser radar systems incur high manufacturing and adjustment costs due to the need for custom-designed optical systems with specific field of view (FOV) requirements, limiting cost-effectiveness and flexibility in production and R&D.
Innovation Solution
A modular laser radar system design utilizing a wedge-shaped lens and aspherical lens system, allowing for adjustable FOV by stacking detection units in horizontal and vertical directions, facilitated by a light source orientation adjustment unit, to meet system requirements while reducing production and R&D costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If custom-designed optical systems are used for each laser radar system to meet specific FOV requirements, then the FOV can be precisely controlled, but manufacturing and adjustment costs increase significantly
Solution Approach 1:
The optical system is segmented into a standardized lens module and a separate FOV adjustment mechanism. The lens module uses fixed-standard lenses that can be mass-produced, while the FOV is adjusted by changing the position of the laser emitting unit or detector unit relative to the lens module, thereby avoiding the need to custom-design entire optical systems for different FOV requirements.
Solution Approach 2:
The system employs dynamic adjustment mechanisms that allow the FOV to be changed by moving components (laser emitting unit or detector unit) relative to the fixed lens module. This dynamic reconfiguration enables the same lens module to serve multiple FOV requirements without requiring custom manufacturing for each application.
2Reliability
If custom-designed optical systems are used for each laser radar system to meet specific FOV requirements, then the system performance can be optimized, but R&D costs and complexity increase
Solution Approach 1:
The lens module is designed as a universal component that can be used across different laser radar systems with varying FOV requirements. By fixing the lens module and adjusting only the position of the laser emitting unit or detector unit, the same lens module achieves multiple functions for different FOV applications, reducing R&D complexity and improving reliability through standardized design.
3Ease of manufacture
If standardized lens modules are used with adjustable FOV mechanisms, then production costs are reduced, but the optical system requires additional adjustment mechanisms
Solution Approach 1:
The system is divided into a fixed standardized lens module and adjustable units (laser emitting unit or detector unit). This segmentation allows the lens module to be mass-produced using standard manufacturing processes, reducing production costs, while the adjustment functionality is isolated to specific units that can be independently positioned to achieve different FOV requirements.
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 cost-effective manufacturing and adjustment of laser radar systems by allowing for customizable FOV, reducing production costs and simplifying the optical system adjustment process.
Implementation Method 1
a wedge-shaped lens for receiving a first laser reflecting beam and emitting a second laser reflecting beam
Implementation Method 2
an aspherical lens system for receiving the second laser reflecting beam and converting the second laser reflecting beam into a third laser reflecting beam by convergence
Implementation Method 3
an optical detector for detecting the third laser reflecting beam and converting the third laser reflecting beam into an electrical signal
Data Source
AI summary
A laser radar device comprises a laser projecting system and a laser radar detecting system. The laser projecting system comprises a laser diode; and a light source orientation adjustment unit comprising a collimating lens and a Powell lens to modulate the angle at which the first incident laser beam is projected onto an object. The laser radar detecting system comprises at least two laser radar detection units disposed in the horizontal direction and vertical direction of the object, respectively. The laser radar detection units each comprise a wedge-shaped lens, an aspherical lens system and an optical detector. By designing optical parameters of the wedge-shaped lens and stacking the laser radar detection units in the horizontal direction and vertical direction, it is feasible to facilitate overall device manufacturing and processing, meet R&D needs, and adjust an optical system in its entirety easily.