Fiber Optic Plate Shielding for Radiation Detector Circuit Regions
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Solution Overview
Problem
Existing radiation detection devices face issues with radiation incident on the circuit region due to misalignment or gaps between the shielding member and the fiber optic plate, leading to deterioration of the light receiving sensor, particularly in high-intensity industrial applications.
Innovation Solution
A radiation detection device design where the fiber optic plate includes a first portion facing the light receiving region and integrally formed second portions facing the circuit region, with wires connected to the circuit board, and a protective member covering the wires, ensuring the second portions are separated from the light receiving sensor to prevent radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the shielding member is disposed in contact with the side surface of the fiber optic plate to prevent radiation from reaching the circuit region, then radiation shielding effectiveness is improved, but manufacturing precision requirements increase and gaps may still form due to positioning errors
Solution Approach 1:
The shielding member is merged with the fiber optic plate by forming the shielding member as an integral part of the fiber optic plate structure. This eliminates the gap problem between separate components and ensures continuous radiation shielding without requiring high positioning accuracy between separate parts.
Solution Approach 2:
The fiber optic plate serves multiple functions: it guides light to the light receiving sensor and simultaneously provides radiation shielding to the circuit region through its extended portion. This multi-functionality eliminates the need for a separate shielding member and ensures precise integration.
2Object-affected harmful factors
If the fiber optic plate is extended to cover the circuit region for shielding, then radiation protection is improved, but the light receiving area may be compromised
Solution Approach 1:
The fiber optic plate is segmented into distinct functional regions: a first portion for light receiving and a second portion for shielding the circuit region. This segmentation allows each portion to perform its specific function optimally without compromising the other.
Solution Approach 2:
Different portions of the fiber optic plate have different local qualities and functions. The first portion is optimized for light receiving while the second portion is optimized for radiation shielding. This local differentiation allows the structure to simultaneously protect the circuit region while maintaining adequate light receiving area.
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 design effectively suppresses radiation incidence on the circuit regions, reducing sensor deterioration, maintaining manufacturing efficiency, and preventing damage to wires while ensuring high image resolution and reduced component count.
Implementation Method 1
a scintillator layer provided on the fiber optic plate
Implementation Method 2
a fiber optic plate provided on the light receiving sensor
Data Source
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AI summary
A radiation detection device (1) includes a circuit board (2), a light receiving sensor (3) having a light receiving region (32) and a plurality of circuit regions (33, 34), an FOP (6), a scintillator layer (8), and a plurality of wires (4A, 4B). The FOP (6) includes a first portion (61) facing the light receiving region (32) and fixed to the light receiving sensor (3), and a second portion (62, 63) facing the circuit region (33, 34) while separated from the light receiving sensor (3). The second portions (62, 63) are integrally formed with the first portion (61). One end of the wire (4A, 4B) is connected to the circuit region (33, 34) in a region (R1, R2) between the light receiving sensor (3) and the second portion (62, 63).