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AssigneeEtat Francais, represente par le Ministere de l'Environnement et de Cadre de Vie, Laboratoire Central des Ponts et Chaussess
InventorJean-Claude Dufay
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The invention relates to a converter for converting non-luminous, so-called input photons such as X or .gamma. photons, into luminous photons, and to an installation for the non-destructive inspection of a material, employing this converter. The converter comprises a layer of luminophore disposed on the path of said non-luminous photons and, upstream of said layer of luminophore, with respect to the direction of displacement of the non-luminous photons, a metal foil in which said non-luminous photons are converted into non-luminous photons of lower energy, by collision (Compton effect) of said input photons on electrons of said metal foil. The invention is more particularly applicable to the non-destructive inspection of concrete structures.
In a converter for converting non-luminous input photons, such as X or .gamma. photons, into luminous photons, said converter being designed for use in combination with an optical transmitting device and an image display device, said converter being in the form of an independent screen, comprising a support layer, a metal foil in which said non-luminous input photons are converted into non-luminous photons of lower energy, by collision of said input photons on electrons of said metal foil, and a layer of luminophore in which said non-luminous photons of lower energy are converted into luminous photons, the improvement comprising a light-reflecting layer of titanium oxide interposed between said metal foil and said layer of luminophore so as to enhance the luminosity of the converter.
Dependencies are inferred from the claim text.