Multi-Orientation Radiation Detectors for High-Resolution Scene Stitching
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Solution Overview
Problem
Existing radiation detectors face challenges in achieving high spatial resolution while maintaining efficient radiation absorption, particularly in large-area and pixelated detectors, due to cumbersome heat management and scattering issues in scintillators, and limitations in semiconductor detectors.
Innovation Solution
A system comprising two radiation detectors with non-parallel planar surfaces, capable of moving relative to a radiation source through rotation and translation, captures images of scene portions at multiple positions and stitches them to form a comprehensive image, using semiconductor detectors with diodes or resistors for charge carrier collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiation detectors are arranged in a single orientation, then device complexity is reduced, but measurement precision is insufficient for capturing three-dimensional radiation distribution
Solution Approach 1:
The radiation detector array is segmented into multiple sub-arrays, each with detectors oriented in different directions (e.g., first sub-array with first orientation, second sub-array with second orientation). This segmentation allows the system to capture radiation distribution from multiple angles simultaneously, improving measurement precision while keeping each sub-array relatively simple in structure
Solution Approach 2:
The patent transitions from a single-orientation (one-dimensional detection) to multi-orientation (three-dimensional detection) detector arrangement. By adding the orientation dimension to the detector configuration, the system can capture spatial distribution of radiation sources more accurately, effectively moving from 2D to 3D measurement capability
2Adaptability or versatility
If multiple detector arrays with different orientations are integrated, then three-dimensional radiation distribution can be captured, but manufacturing precision requirements increase
Solution Approach 1:
The system divides the detector array into multiple independent sub-arrays, each with a specific orientation. This segmentation allows each sub-array to be manufactured and calibrated separately with standardized precision requirements, then integrated into the complete system, reducing the overall manufacturing precision burden compared to building a single complex multi-orientation array
Solution Approach 2:
Each detector sub-array is designed with universal characteristics that allow it to function independently while contributing to the overall three-dimensional measurement capability. The sub-arrays can be manufactured using the same processes and then combined, improving adaptability while maintaining consistent manufacturing precision standards across all units
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
Enhances spatial resolution by minimizing charge carrier sharing across detector pixels, allowing for high-resolution imaging of large scenes without significant resolution loss at the edges, and supports various imaging applications.
Implementation Method 1
Each detector element may include a conversion layer that converts incident radiation into visible light
Data Source
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AI summary
An image sensor (9000) comprises a first radiation detector (100A) and a second radiation detector (100B), respectively comprising a planar surface (103A, 103B) configured to receive radiation from a radiation source (109); wherein the planar surface (103A) of the first radiation detector (100A) and the planar surface (103B) of the second radiation detector (100B) are not parallel; wherein the first radiation detector (100A) and the second radiation detector (100B) are configured to move to a plurality of positions relative to the radiation source (109); wherein the image sensor (9000) is configured to capture, by using the first radiation detector (100A) and the second radiation detector (100B) and with the radiation, images of portions of a scene (50) at the positions respectively, and configured to form an image of the scene (50) by stitching the images of the portions.