Laser Measurement Module Shared Reflector for MEMS Scanning
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Solution Overview
Problem
Solid-state laser radars face limitations in scanning angle and resolution, necessitating the integration of multiple laser scanning components to meet technical requirements for unmanned driving, which increases manufacturing costs and reduces integration and compactness.
Innovation Solution
A laser measurement module with N laser ranging components and a single MEMS micromirror, where the components share a reflector to perform optical path connection, reducing the need for multiple micromirrors and enhancing integration and compactness, while allowing flexible optical path adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple independent MEMS micromirrors are integrated to improve scanning angle and resolution, then the scanning performance is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Multiple laser ranging components share a single common reflector instead of each component having its own independent reflector. This merging of the reflector resource reduces the total number of components, simplifies the system structure, and lowers manufacturing costs while maintaining the enhanced scanning performance achieved through multiple laser components
Solution Approach 2:
The common reflector serves multiple functions by reflecting light beams from multiple different laser ranging components onto a single MEMS micromirror. This universal component replaces what would traditionally require multiple separate reflectors, reducing system complexity while enabling the multi-component laser system to achieve improved scanning angle and resolution
2Measurement precision
If multiple independent MEMS micromirrors are integrated to improve scanning angle and resolution, then the scanning performance is improved, but the manufacturing cost increases
Solution Approach 1:
Multiple laser ranging components share a single common reflector instead of each component having its own independent reflector. This merging of the reflector resource reduces the total number of components, simplifies the system structure, and lowers manufacturing costs while maintaining the enhanced scanning performance achieved through multiple laser components
Solution Approach 2:
Instead of replicating the reflector component for each laser ranging unit (which would increase cost), the system uses a single shared reflector that serves all components. This eliminates the need to manufacture and assemble multiple identical reflector components, reducing manufacturing complexity and cost
3Measurement precision
If multiple independent MEMS micromirrors are integrated to improve scanning angle and resolution, then the scanning angle is improved, but the integration and compactness are reduced
Solution Approach 1:
Multiple laser ranging components share a single common reflector instead of each component having its own independent reflector. This merging of the reflector resource reduces the total number of components, simplifies the system structure, and lowers manufacturing costs while maintaining the enhanced scanning performance achieved through multiple laser components
Solution Approach 2:
The common reflector serves multiple functions by reflecting light beams from multiple different laser ranging components onto a single MEMS micromirror. This universal component replaces what would traditionally require multiple separate reflectors, reducing system complexity while enabling the multi-component laser system to achieve improved scanning angle and resolution
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 improves the scanning angle and resolution of the laser radar, reduces manufacturing costs, and enhances the scalability and stability of the optical path, making it suitable for vehicular applications.
Implementation Method 1
The reflector is configured to perform optical path reflecting on the emergent light beam, and emit the reflected emergent light beam onto the MEMS micromirror
Implementation Method 2
The MEMS micromirror is configured to change a direction of the emergent light beam to implement two-dimensional scanning
Data Source
AI summary
Embodiments of this application disclose a laser measurement system and a laser radar. In one aspect, a laser measurement system includes N laser ranging components, a reflector, and MEMS micromirror. The N laser ranging components can emit an emergent light beam onto the reflector. The reflector can perform optical path reflecting on the emergent light beam and emit the reflected emergent light beam onto the MEMS micromirror. The MEMS micromirror can change a direction of the emergent light beam to implement two-dimensional scanning, change a direction of an echo light beam, and emit this beam onto the reflector. The reflector can perform optical path reflecting on the echo light beam and emit this beam onto the N laser ranging components. The N laser ranging components can receive the echo light beam and perform ranging based on a time difference between the emergent light beam and the echo light beam.