Plastic scintillating optical fiber and method of manufacturing the same

By integrating the outermost layer and phosphor core cladding with heavy metal elements into the plastic scintillation fiber, the problems of low detection sensitivity and difficult processing in the prior art are solved, and high-sensitivity and high-productivity plastic scintillation fiber is realized.

CN116324514BActive Publication Date: 2026-03-17KURARAY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-07-01
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing plastic scintillating optical fibers emit light in the fiber core and transmit the light to the photodetector. They cannot improve the detection sensitivity of X-rays and gamma rays by including heavy metal elements. Furthermore, the combination of existing scintillators and wavelength conversion fibers requires post-processing, which is difficult.

Method used

The design employs a plastic scintillation fiber with an outermost layer containing heavy metal elements, a core containing phosphors, and a low-refractive-index cladding. The fiber is formed into an integrated structure through a drawing process, avoiding post-processing.

Benefits of technology

It improves the detection sensitivity of X-rays and gamma rays, has excellent productivity, reduces costs, and simplifies the processing.

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Abstract

One aspect of the present invention comprises an outermost peripheral layer (1) of a resin containing a compound of heavy metal elements and having scintillatory properties, a core (2) disposed inside the outermost peripheral layer (1) and containing at least one phosphor that absorbs scintillating light generated in the outermost peripheral layer (1) and converts the wavelength to a longer wavelength, and a cladding (3) covering the outer peripheral surface of the core (2) and having a lower refractive index than the core (2). The wavelength conversion fiber comprising the core (2) and the cladding (3) is integrally formed with the outermost peripheral layer (1) covering the outer peripheral surface of the wavelength conversion fiber.
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Citation Information

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