Abstract: An X-ray imaging device 1 includes a back-illuminated solid-state image pickup element 10 including an X-ray detection section having a plurality of detection pixels arrayed for detecting incident X-rays formed on one surface 11 side, and an X-ray incident surface on the other surface 12, and a shielding layer 20 provided on the incident surface 12 of the image pickup element 10 and to be used for blocking light rays with wavelengths longer than the wavelength of X-rays as a detection target. The shielding layer 20 includes a first aluminum layer 21 provided directly on the incident surface 12, a second aluminum layer 22 provided on the first aluminum layer 21, and an ultraviolet light shielding layer 25 that is provided between the first and second aluminum layers 21 and 22 and is used for blocking ultraviolet light rays. Accordingly, an X-ray imaging device capable of suppressing the influence of detection of noise light in X-ray detection is realized.

Abstract: An X-ray imaging device 1 includes a back-illuminated solid-state image pickup element 10 including an X-ray detection section having a plurality of detection pixels arrayed for detecting incident X-rays formed on one surface 11 side, and an X-ray incident surface on the other surface 12, and a shielding layer 20 provided on the incident surface 12 of the image pickup element 10 and to be used for blocking light rays with wavelengths longer than the wavelength of X-rays as a detection target. The shielding layer 20 includes a first aluminum layer 21 provided directly on the incident surface 12, a second aluminum layer 22 provided on the first aluminum layer 21, and an ultraviolet light shielding layer 25 that is provided between the first and second aluminum layers 21 and 22 and is used for blocking ultraviolet light rays. Accordingly, an X-ray imaging device capable of suppressing the influence of detection of noise light in X-ray detection is realized.

Abstract: A parallel X-ray beam generated from an X-ray generator is radiated onto a CCD of a CCD camera via a metal mesh disposed in front of the CCD. In order to detect the X-ray, a multi-pitch metal mesh (11) is disposed as the metal mesh. The incident position of the X-ray is determined on the basis of a ratio between a primary electron cloud produced by the X-ray spread over a plurality of pixels and a portion of the cloud existing in each of the plurality of pixels.