Radiation Detector Fiber Optic Plate Alignment for Intraoral Imaging
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Solution Overview
Problem
The existing X-ray image sensors face challenges in accurately acquiring intraoral X-ray transmission images due to potential positional deviations between fiber optic plates, which can lead to inaccuracies in the radiographic image over an extended range.
Innovation Solution
A radiation detector design featuring adjacent first and second image sensors with corresponding fiber optic plates, where the plates' light entering and exiting regions are aligned to ensure continuous light detection, minimizing positional deviations and allowing for accurate image acquisition over an extended range. The detector includes a scintillator layer on the fiber optic plates, which generates light upon radiation entry, guiding it to the sensors for continuous detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If fiber optic plates are arranged adjacent to each other on the wiring board, then the detection range is extended, but positional deviation occurs between light entering surfaces leading to image inaccuracy
Solution Approach 1:
The detection system is divided into multiple independent image sensors (first image sensor, second image sensor, etc.) arranged in a matrix, with corresponding fiber optic plates for each sensor. This segmentation allows the system to cover an extended detection range while maintaining positioning accuracy through individual alignment of each sensor-plate pair, resolving the contradiction between extended range and image accuracy.
2Length of moving object
If fiber optic plates are made thinner to reduce device size, then the detector becomes more compact, but radiation-induced deterioration increases
Solution Approach 1:
The patent optimizes the thickness parameter of the fiber optic plates to a specific range that balances two competing requirements: thin enough to keep the device compact and maintain light transmission efficiency, but thick enough to provide sufficient mechanical strength and resistance against radiation-induced deterioration. This parameter optimization resolves the contradiction between device compactness and radiation resistance.
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 configuration ensures accurate and continuous detection of light by the image sensors, reducing positional deviations and enabling the generation of high-quality radiographic images over an extended range while maintaining sufficient thickness to prevent radiation-induced deterioration.
Implementation Method 1
a scintillator layer provided on the plurality of fiber optic plates... when radiation enters the scintillator layer, light is generated in the scintillator layer
Implementation Method 2
a first fiber optic plate... capable of guiding light between a first light entering region of the first light entering surface and a first light exiting region of the first light exiting surface
Implementation Method 3
a first image sensor and a second image sensor adjacent to each other on the wiring board... light which has entered the first fiber optic plate from the scintillator layer is guided from the first light entering region to the first light exiting region and enters the first light receiving region of the first image sensor
Data Source
AI summary
A radiation detector includes a wiring board, a first image sensor, a second image sensor, a first fiber optic plate, a second fiber optic plate, and a scintillator layer. The first fiber optic plate can guide light between a first light entering region and a first light exiting region. The second fiber optic plate can guide light between a second light entering region and a second light exiting region. One side of the first light entering region and one side of the second light entering region are in contact with each other. The first light exiting region is positioned on a first light receiving region. The second light exiting region is positioned on a second light receiving region. One side surface of a first side surface and one side surface of a second side surface exhibit shapes along each other and in contact with each other.