Patent application number | Description | Published |
20100096565 | GLASS COMPOSITION FOR ULTRAVIOLET LIGHT AND OPTICAL DEVICE USING THE SAME - A glass composition for ultraviolet light is provided. The glass composition for ultraviolet light contains Lu, Al, and O in an amount of 99.99 weight % or more in total. The glass composition contains Lu in an amount of 24% or more and 33% or less in cation percent and Al in an amount of 67% or more and 76% or less in cation percent. | 04-22-2010 |
20100246764 | SOURCE GRATING FOR X-RAYS, IMAGING APPARATUS FOR X-RAY PHASE CONTRAST IMAGE AND X-RAY COMPUTED TOMOGRAPHY SYSTEM - A source grating for X-rays and the like which can enhance spatial coherence and is used for X-ray phase contrast imaging is provided. The source grating for X-rays is disposed between an X-ray source and a test object and is used for X-ray phase contrast imaging. The source grating for X-rays includes a plurality of sub-gratings formed by periodically arranging projection parts each having a thickness shielding an X-ray at constant intervals. The plurality of sub-gratings are stacked in layers by being shifted. | 09-30-2010 |
20100290590 | X-RAY IMAGING APPARATUS, X-RAY IMAGING METHOD, AND X-RAY IMAGING PROGRAM - An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image. | 11-18-2010 |
20110013743 | PHASE GRATING USED FOR X-RAY PHASE IMAGING, IMAGING APPARATUS FOR X-RAY PHASE CONTRAST IMAGE USING PHASE GRATING, AND X-RAY COMPUTED TOMOGRAPHY SYSTEM - A phase grating used for X-ray phase imaging is provided, in which a pitch can be narrowed by using a diffraction grating with a low aspect ratio. A phase grating used for X-ray phase imaging, characterized in that the phase grating includes a first diffraction grating in which a first projection part whose thickness is formed so that an in-coming X-ray transmits with a phase π-shifted, and a first aperture part with the same aperture width as a width of the first projection part are cyclically arranged, and a second diffraction grating in which a second projection part with the same width as a width of the first projection part, and a second aperture part with the same aperture width as the aperture width of the first aperture part are cyclically arranged, and the second diffraction grating is formed as displaced on the first diffraction grating. | 01-20-2011 |
20110280368 | X-RAY IMAGING APPARATUS, X-RAY IMAGING METHOD, AND X-RAY IMAGING PROGRAM - An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image. | 11-17-2011 |
20120152730 | GLASS COMPOSITION FOR ULTRAVIOLET LIGHT AND OPTICAL DEVICE USING THE SAME - A glass composition for ultraviolet light is provided. The glass composition for ultraviolet light contains Lu, Al, and O in an amount of 99.99 weight % or more in total. The glass composition contains Lu in an amount of 24% or more and 33% or less in cation percent and Al in an amount of 67% or more and 76% or less in cation percent. | 06-21-2012 |
20120281811 | X-RAY IMAGING METHOD AND X-RAY IMAGING APPARATUS - There is provided an X-ray imaging method for reducing unnecessary components caused by a transmittance distribution of an object and unevenness in irradiation by a light source and accurately calculating a differential phase at the time of X-ray imaging by SDG. | 11-08-2012 |
20130070893 | X-RAY IMAGING APPARATUS, X-RAY IMAGING METHOD, AND X-RAY IMAGING PROGRAM - An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image. | 03-21-2013 |
20130181130 | IMAGING APPARATUS USING TALBOT INTERFERENCE AND ADJUSTING METHOD FOR IMAGING APPARATUS - An imaging apparatus includes a diffraction grating which diffracts electromagnetic waves from an electromagnetic wave source, a shield grating which shields a part of the electromagnetic waves diffracted by the diffraction grating, a detector which detects an intensity distribution of the electromagnetic waves through the shield grating, and an adjusting unit which adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the detection result by the detector, wherein the adjusting unit divides the intensity distribution detected by the detector into a plurality of regions and adjusts the attitude of at least one of the diffraction grating and the shield grating on the basis of the intensity distributions of the plurality of regions. | 07-18-2013 |