LED-LFC Proton Dosimeter Assembly for Precise Radiation Sensing
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Solution Overview
Problem
Current methods for measuring proton radiation intensity in space and medical applications lack accuracy and precision, particularly in predicting health risks and mitigating damage to electronic components from proton-induced radiation.
Innovation Solution
A proton dosimeter is fabricated using a light emitting diode (LED) and a light-to-frequency converter (LFC), where the sensitive zones of both are bonded with acrylic glue, wrapped in metal foil and polymer tape, and sealed with a heat-shrinking sleeve, converting proton-induced light output into a frequency output for precise fluence calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radiation measurement methods are used, then measurement capability is provided, but measurement precision and accuracy are insufficient
Solution Approach 1:
The patent combines a light-emitting diode (LED) and a light-to-frequency converter (LFC) into an integrated dosimeter assembly, where the LED's light output directly couples to the LFC's sensitive zone. This merging of optical detection and frequency conversion functions into a single integrated system enables precise proton radiation measurement by converting radiation-induced light signals into measurable frequency outputs, thereby resolving the contradiction between measurement precision and reliability.
2Ease of manufacture
If sensitive zones are exposed for bonding, then assembly is enabled, but sensitivity to external light increases
Solution Approach 1:
The patent applies preliminary action by pre-attaching transparent tape to the LED's frontal surface before bonding the components together. This preparatory step creates an immediate barrier against external light contamination during the assembly process, allowing the sensitive zones to remain exposed for bonding while simultaneously protecting them from harmful external light interference. The transparent tape maintains optical transparency for proton-induced light while blocking ambient light during manufacturing.
3Object-affected harmful factors
If metal foil and polymer tape are wrapped around sensitive zones, then light contamination is prevented, but device complexity increases
Solution Approach 1:
The patent employs flexible thin films—specifically transparent tape on the LED surface and aluminum foil wrapped around the LFC— to protect sensitive zones from light contamination. These thin film barriers provide effective shielding against external and reflected light while maintaining a relatively simple overall device structure. The flexible nature of these films allows them to conform to the component surfaces without adding significant structural complexity, thus resolving the contradiction between protection and simplicity.
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 dosimeter provides accurate and precise measurement of proton radiation, enhancing the reliability of electronic components in space and enabling effective risk assessment and dose evaluation in medical applications.
Implementation Method 1
Impinging the proton radiation on the depletion zone (122) of the LED (120) leads to formation of a plurality of non-radiative-recombination-centres (306) in the depletion zone (304) that further reducing the light output (305) of the LED (120)
Implementation Method 2
converting the light output (305) of the LED (120) to a frequency output (307) by a light-to-frequency converter (LFC) (124)
Data Source
AI summary
According to an embodiment herein, a method of fabricating (100) a proton dosimeter (200) including; filing off (104) a frontal surface of a light emitting diode (LED) (120) and a frontal surface of a light-to-frequency converter (LFC) (124); exposing a plurality of first sensitive zone (122) of the LED (120) and a plurality of second sensitive zone (123) of the LFC (124); bonding (108) the plurality of first sensitive zones (122) and the plurality of second sensitive zones (123) by acrylic glue; wrapping (110) the sensitive zone interface of the LED (120) and the LFC (124) in a metal foil (111) and a polymer tape (113); and filling a gap between the metal foil (111) and a plurality of terminal leads (115) of the LED (120) and the LFC (124) with acrylic polymer aliquots (125)