Omnidirectional Lidar Stationary Imaging Arrangement
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Solution Overview
Problem
Existing object detection devices, such as scanning laser rangefinders, face challenges in covering large angular ranges like 360° without moving heavy components, which increases power consumption and reduces service life due to the need for rotating parts.
Innovation Solution
Incorporating an imaging arrangement that covers the entire detection area, combined with spatial resolution means to distinguish reflected radiation, allowing for simultaneous detection of multiple reflection locations without moving components, and utilizing optically effective elements like panoramic lenses to achieve all-round vision without rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a motor-driven rotating prism or rotating mirror is used to scan the detection area, then the angular range of detection can be covered, but the power consumption increases and the service life is reduced due to moving heavy components
Solution Approach 1:
The patent replaces the mechanical rotating mirror or prism system with a stationary imaging arrangement that uses optical elements (such as a lens or mirror) to scan the detection area. The beam is deflected by the stationary imaging arrangement rather than by a mechanically rotating component, eliminating the need to move heavy masses and thereby reducing power consumption and extending service life.
Solution Approach 2:
The imaging arrangement is divided into a stationary component (the imaging arrangement itself) and a movable component (the beam). By separating the function of scanning from the mechanical rotation, the system achieves angular coverage without moving the entire optical system, thus reducing the mass that needs to be accelerated and the associated power requirements.
2Reliability
If a motor-driven rotating prism or rotating mirror is used to scan the detection area, then the angular range of detection can be covered, but the device complexity increases and reliability decreases due to rotating parts
Solution Approach 1:
The patent eliminates mechanical rotating parts by using a stationary imaging arrangement with optical elements to deflect the beam. This substitution of mechanical scanning with optical scanning reduces device complexity and removes wear-prone components, thereby improving reliability.
Solution Approach 2:
The patent extracts the rotation function from the imaging arrangement itself and replaces it with a stationary optical system. By taking out the mechanical rotation requirement, the system becomes simpler and more reliable while still achieving the necessary angular coverage through optical beam deflection.
3Area of stationary object
If the entire electro-optical unit is made to rotate to cover 360°, then the detection area is fully covered, but large masses have to be moved significantly increasing power consumption
Solution Approach 1:
The patent replaces the mechanical rotation of the entire electro-optical unit with a stationary imaging arrangement that uses optical elements to deflect the beam across the detection area. This substitution eliminates the need to move large masses while maintaining full angular coverage.
Solution Approach 2:
The patent changes the approach from mechanical rotation in one dimension (rotating the entire unit) to optical deflection in another dimension (beam direction control through stationary optical elements). This dimensional shift allows full angular coverage without moving the heavy electro-optical unit.
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 approach minimizes the need for moving massive components, reduces power consumption, and significantly extends the service life of the detection device while maintaining spatial resolution and enabling detection over a wide angular range.
Implementation Method 1
imaging arrangement which at all times covers the entire detection area on the transmission side and/or reception side
Implementation Method 2
transmission device for emitting electromagnetic radiation in a transmission area
Implementation Method 3
reception device for receiving radiation reflected from a reception area
Data Source
Figure 1a~1b
Figure 2~3
Figure 4~5
AI summary
An imaging system (29) is installed in the propagation paths of the radiation wave and reflected wave for covering the detection region at the transmission side and the receiving side. A rotary wedge-shape optical element (31) identifies the reflected wave regarding the reflective position. An independent claim is included for usage method of imaging system.