Patent ID: 7176476
Filing Date: 2007-02-13
Classification: G01T

Abstract:
1. In a device for acquiring latent image information contained in a phosphor layer, said device comprising, in combination: (a) a light source for irradiating the phosphor layer with excitation light that is suitable for exciting emission light in the phosphor layer, said emission light having a first wavelength range (W (b) a detector for detecting the emission light that has been excited in the phosphor layer; and (c) a filter device, arranged between the phosphor layer and the detector, which is substantially transparent in the first wavelength range (W wherein at least a second one of the filter elements is substantially transparent in the first wavelength range (W wherein at least one of the filter elements includes a first reflection layer that is substantially non-transparent for light in a fourth wavelength range (W wherein at least one of the filter elements includes a second reflection layer that is substantially non-transparent for light in a fifth wavelength range (W whereby the filter elements and their reflection layers are substantially non-transparent to light in the wavelength ranges W