Patent
Photodetector scintillator radiation imager having high efficiency light collection
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TLDR
In this article, a radiation imager comprising an array of scintillator elements optically coupled to a photodetector array comprises a dielectric layer extending around at least the sidewalls of the SCINI elements, and preferably over the surface of the scintilator elements through which the incident radiation enters, and an optically reflective layer disposed over the dielectrics layer.Abstract:
A radiation imager comprising an array of scintillator elements optically coupled to a photodetector array comprises a dielectric layer extending around at least the sidewalls of the scintillator elements, and preferably over the surface of the scintillator elements through which the incident radiation enters, and an optically reflective layer disposed over the dielectric layer. The dielectric layer has an optical index that is less than that of the scintillator material, and consequently light collection efficiency of the scintillator is improved as light photons generated in the scintillator reflected back into the scintillator both at the interface of the scintillator and the dielectric layer and at the optically reflective layer. A dome-shaped surface at the end of the scintillator element through which the incident radiation enters and an undulatory-shaped surface at the end of the scintillator which is optically coupled to the photodetectors further increase the light collection efficiency of the scintillator by reducing the number of photons that undergo total internal reflection in the scintillator.read more
Citations
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Radiation detection device and method of making the same
TL;DR: In this article, a light-receiving device array in which a plurality of light receiving devices are one- or two-dimensional arranged on a substrate, a scintillator layer is deposited on the light receiving device and provided with columnar crystals, and an organic film is formed over the scintillation layer and there outside region of the substrate and it intrudes into gaps among the top part of the columnar crystal.
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References
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Patent
Reflective coating for solid-state scintillator bar
TL;DR: A multilayer film for coating an exterior of a scintillation detector bar includes a pressure sensitive adherent layer containing a percentage of a light-diffusing material therein for affixing to an external surface of the bar as mentioned in this paper.
Patent
Cellularized Luminescent structures
TL;DR: In this paper, a cellularized radiation sensitive structure is provided in which a laser is utilized to cut narrow slots in a sheet of luminescent material, usually cut in an X-Y pattern, are then filled with a material which is opaque to either light or radiation or both.
Patent
Radiographic image detection device
TL;DR: In this paper, a radiographic image detection device comprised of a semiconductive matrix having rows and columns of radiation sensitive areas, a protective layer formed on the semiconductorive matrix and having lands or land portions defined by grooves corresponding to areas between the rows or columns of the sensitive areas and crystals capable of adsorbing X-ray radiation disposed on the lands of the protective layer.
Patent
Radiation position detector
Watanabe Mitsuo,Satou Nakahiro +1 more
TL;DR: In this paper, the authors proposed a method to obtain excellent position resolution by converging output light from each scintillator element and directing the output light toward an optical coupling material and a light position detector.