Lidar Detector Mirror Reduces Rotating Mass
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Solution Overview
Problem
Existing LIDAR apparatuses have complex detector structures and evaluation methods due to the need for positional resolution of reflected beams, which increases the rotating mass and detector size.
Innovation Solution
A LIDAR apparatus with a detector mirror that focuses reflected beams onto a small, simple detector, where positional resolution is achieved by the orientation of the beam source and mirror, allowing for a reduced rotating mass and detector size, and using a rotor with only the mirror and detector components, simplifying the evaluation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stationary detectors are shaped rotationally symmetrically to enable positional resolution of reflected beams, then positional resolution is achieved, but detector complexity increases
Solution Approach 1:
A detector mirror is introduced as an intermediary component between the reflected beams and the detector. The detector mirror directs reflected beams from different directions onto the same detector region, enabling positional resolution through the mirror's orientation rather than through complex detector geometry. This separates the functions of beam direction control and detection, simplifying the detector structure.
2Measurement precision
If complex detector structures are used to achieve positional resolution, then measurement precision improves, but the rotating mass increases
Solution Approach 1:
The detector mirror serves as a mediator that consolidates reflected beams from different directions onto a single detector region. This eliminates the need for multiple detectors or complex detector arrays on the rotating platform, significantly reducing the rotating mass while maintaining positional resolution through the mirror's angular orientation.
3Measurement precision
If complex evaluation methods are used for rectangular detectors, then measurement precision is maintained, but device complexity increases
Solution Approach 1:
The detector mirror acts as an optical intermediary that performs the spatial mapping function before detection. By directing all reflected beams onto the same detector region, the mirror transfers the positional information to the beam direction rather than requiring spatial encoding at the detector, greatly simplifying the evaluation process.
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 solution enables efficient scanning of a scan region with reduced rotating mass and detector size, simplifying the detector design and evaluation process, while maintaining positional resolution through the orientation of the beam source and mirror.
Implementation Method 1
the detector mirror focusing at least one reflected beam onto the detector
Implementation Method 2
a mirror for deflecting the at least one generated beam toward the scan region
Implementation Method 3
a detector mirror for deflecting at least one beam, reflected at an object, onto a region of the detector
Data Source
AI summary
A LIDAR apparatus for scanning a scan region with at least one beam is described. The LIDAR apparatus includes at least one beam source for generating the at least one beam; having a mirror for deflecting the at least one generated beam toward the scan region; and having a detector mirror for deflecting at least one beam, reflected at an object, onto a defined region of a detector, the mirror and the detector mirror being disposed on a rotor rotatably around a vertical rotation axis, and the detector mirror focusing the at least one reflected beam onto the detector. A method for operating a LIDAR apparatus is also described.