Galvano Scanner Deflector for High-Speed Moving Object Tracking
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Solution Overview
Problem
Existing moving object imaging technologies face limitations in tracking high-speed objects due to the weight of the camera and the response time of Galvano scanners, requiring high-performance cameras for consecutive deflection angles to maintain high-speed imaging.
Innovation Solution
A moving object imaging device comprising an imaging unit, a position information acquisition part, and a deflector that adjusts the relative deflection angle to bring the object within the imaging unit's visual field, using a two-dimensional Galvano scanner to track and image the object with improved response time and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the camera is mounted on a pan tilt mechanism to track the moving object, then the camera can be moved to follow the object, but the response speed is limited due to the weight of the camera
Solution Approach 1:
The system separates the camera from the heavy pan-tilt mechanism. The camera remains stationary while a lightweight deflection mirror handles the tracking function, dividing the original system into independent functional components that can operate optimally without mutual constraint
Solution Approach 2:
The patent replaces the mechanical pan-tilt camera system with an optical deflection system using a lightweight mirror. This substitution eliminates the need to move the heavy camera by mechanical means, achieving faster response through optical redirection instead of mechanical repositioning
2Speed
If a deflection mirror driven by a Galvano scanner is used to track the moving object, then high-speed imaging can be achieved, but a high-performance camera capable of consecutive deflection angles is indispensable
Solution Approach 1:
The system divides the tracking function from the imaging function. The Galvano scanner handles only the deflection mirror positioning while the camera performs stationary imaging, allowing the camera to use a longer exposure time without being constrained by the need to track during exposure
Solution Approach 2:
The deflection mirror is updated at discrete time points between consecutive image exposures rather than continuously during exposure. This periodic updating approach allows the camera to capture images at a slower rate while the mirror interpolates positions between frames, reducing the camera's performance requirements
3Measurement precision
If the camera is moved by driving the pan tilt mechanism to direct the optical axis toward the moving object, then the object can be captured within the imaging range, but the quick response speed cannot be expected due to the weight of the camera
Solution Approach 1:
The patent replaces the mechanical camera positioning system with an optical deflection system. A lightweight mirror mounted on a fast Galvano scanner redirects light to keep the stationary camera's optical axis aligned with the moving target, achieving both high precision and fast response simultaneously
Solution Approach 2:
The deflection mirror serves as an intermediary element between the stationary camera and the moving object. Instead of moving the camera directly, the mirror mediates by redirecting the optical path, allowing the camera to remain fixed while still tracking the object's motion
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 flexible and high-speed imaging of moving objects by synchronizing the imaging unit's position with the object's movement, allowing for continuous imaging and the creation of moving image data, enhancing the tracking capability and response time.
Implementation Method 1
a deflector that changes a relative deflection angle of the moving object and the imaging unit, and is configured to image an image of the moving object using the imaging unit through the deflector
Data Source
AI summary
A technology is provided in which moving objects positioned at a different place and having more than the number of the cameras are displayed on a display device. The present invention is directed to a moving object imaging device including a camera, a deflection unit, a controller configured to control the camera and the deflection unit, an imaging processing part, and an imaging display part, thereby imaging the moving object in a sequentially repeating manner and creating moving image data based upon images acquired by the image processing part to display the created moving image data on the image display part.