Radiation Spot Quality Analysis Using Time-of-Flight Feedback
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Solution Overview
Problem
Existing illumination sources struggle to ensure that radiation spots meet predefined quality criteria such as spot size, shape, energy uniformity, and alignment, which is crucial for various applications.
Innovation Solution
A system comprising a controllable electromagnetic light source, a radiation sensor, an analyzer, a remedy module, and a controller that generates and transmits a pulsed light beam, senses reflections, analyzes their magnitude and delay, and adjusts the light beam to meet predefined spot validity criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pulsed light beam is transmitted onto an object to create a radiation spot, then the illumination can be controlled and measured, but it is difficult to ensure the radiation spot meets predefined quality criteria such as spot size, shape, energy uniformity, and alignment
Solution Approach 1:
The system transmits a pulsed light beam onto the object and receives reflections back. By analyzing the time-of-flight parameters and magnitude of reflections, the system determines whether the radiation spot meets quality criteria. If the spot is invalid (e.g., misplaced, wrong size, poor energy distribution), the system generates adjustments to modify the spatial orientation and/or beam divergence of the light source, creating a closed-loop feedback control system that ensures spot validity.
Solution Approach 2:
The system performs preliminary analysis of the radiation spot quality by receiving and analyzing light reflections before final illumination is confirmed. The time-of-flight parameters are measured in advance to determine spot location, size, and shape, allowing the system to pre-adjust the light source parameters to ensure the spot will meet quality criteria before actual application.
2Manufacturing precision
If the spatial orientation and beam divergence of the light source are adjusted to meet quality criteria, then spot alignment and shape improve, but the system requires complex control and measurement mechanisms
Solution Approach 1:
The system replaces complex mechanical adjustment mechanisms with optical measurement and control. Instead of using mechanical devices to physically adjust spot position and shape, the system uses time-of-flight optical measurements to detect spot quality and electronically controls the light source parameters (spatial orientation and beam divergence) to achieve precise alignment and shape control.
Solution Approach 2:
The system introduces light reflections as an intermediary medium to transmit information about spot quality. By analyzing the reflected light's time-of-flight parameters and magnitude, the system indirectly measures spot location, size, shape, and energy distribution without requiring direct physical contact or complex mechanical sensors at the target location.
3Measurement precision
If time-of-flight parameters are used to distinguish light reflections from different ranges, then spot location accuracy improves, but the measurement and analysis complexity increases
Solution Approach 1:
The system uses periodic pulsed light transmission to measure spot location. By transmitting light in regular pulses and measuring the time-of-flight of reflections for each pulse, the system achieves precise spot location measurement through periodic sampling, converting a continuous measurement problem into discrete, manageable time intervals.
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 system effectively analyzes and adjusts radiation spots to ensure compliance with predefined quality criteria, improving the accuracy and reliability of illumination in various applications.
Implementation Method 1
at least one controllable electromagnetic light source configured to generate and transmit a pulsed light beam onto an object, resulting in a light spot on said object
Implementation Method 2
at least one radiation sensor configured to sense and obtain light reflections of said pulsed light beam
Implementation Method 3
the analyzer uses time-of-flight parameters of the light reflections to distinguish between light reflections coming from different ranges
Data Source
Figure 1
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Figure 3A~3B
AI summary
A system and method for analyzing quality criteria of a radiation spot are provided herein. The system may include: at least one controllable electromagnetic radiation source configured to generate and transmit a radiation beam onto an object, resulting in a radiation spot on said object; at least one radiation sensor configured to sense and obtain radiation reflections coming back from said object, wherein the radiation beam is generated in a way that reflections from different ranges are distinguishable of each other; and an analyzer configured to analyze said radiation reflections, and determine a remedy to the radiation beam, in a case that said radiation spot does not meet predefined spot validity criteria. The method may implement the aforementioned logic in a different architecture.