Abstract: The image display device includes a liquid crystal display device having a liquid crystal panel and a backlight and a backlight controller for allowing the backlight of the liquid crystal display device to be bright when environment light is bright and allowing the backlight to be dark when the environment light is dark such that light leak (minimum luminance) which is defined by an extinction ratio of liquid crystal will not grow more than a specified degree. The image display device enables displayed images to be really discernible regardless of brightness of environment light (surrounding light).

Abstract: A radiation image obtaining system that detects a radiation image of a subject by irradiation of radiation which has passed through the subject and a grid, in which a position of a radiation source with respect to a recording surface of a radiation image detector, and an angle of a central axis of radiation with respect to the recording surface, are obtained with a simple structure. Two lines, which pass through center positions of pinhole images, recorded in the radiation-image detector by irradiation thereof by the radiation which has passed through pinholes, and predetermined center positions of the pinholes, are obtained. The position of the radiation source with respect to the recording surface and the angle of the central axis of the radiation with respect to the recording surface are calculated, based on distances between the intersection of the two lines the center positions of the pinhole images.

Abstract: In the obtainment of image signals by receiving emitted light, generated by a stimulable phosphor sheet due to irradiation thereof by an excitation light, at the light receiving surfaces of photoelectric conversion elements, then obtaining an electrical image signal based on the charges stored in the photoelectric conversion elements by an image signal obtainment means comprising a charge transfer path and an output circuit, the area surrounding the light receiving surfaces of the photoelectric conversion elements have been covered by a filter that absorbs only blue light, and the emitted light is received.

Abstract: A radiation image obtaining system that detects a radiation image of a subject by irradiation of radiation which has passed through the subject and a grid, in which a position of a radiation source with respect to a recording surface of a radiation image detector, and an angle of a central axis of radiation with respect to the recording surface, are obtained with a simple structure. Two lines, which pass through center positions of pinhole images, recorded in the radiation image detector by irradiation thereof by the radiation which has passed through pinholes, and predetermined center positions of the pinholes, are obtained. The position of the radiation source with respect to the recording surface and the angle of the central axis of the radiation with respect to the recording surface are calculated, based on distances between the intersection of the two lines the center positions of the pinhole images.

Abstract: In a side body structure, a front reinforce is provided between a side body outer panel and a side body inner panel and also, a rear roof side reinforce is provided so as to couple the front reinforce to a rear pillar reinforce along the upper edge of an opening of a rear door, and vehicle body rigidity of the periphery of the opening of the rear door as well as the periphery of an opening of a front door is enhanced.

Abstract: A linear stimulating ray source produces stimulating rays and linearly irradiates them to a portion of a stimulable phosphor sheet, on which a radiation image has been stored. A photoelectric read-out system divides light, which is emitted from the portion of a front surface of the stimulable phosphor sheet exposed to the stimulating rays and/or the portion of a back surface of the stimulable phosphor sheet corresponding to the portion of the front surface exposed to the stimulating rays, into picture elements along a length direction of the portion exposed to the stimulating rays, and photoelectrically reads out the divided picture elements by arraying them in a two-dimensional form. A scanning system moves the stimulable phosphor sheet with respect to the linear stimulating ray source and the photoelectric read-out system and in a direction, which is approximately normal to the length direction of the portion exposed to the stimulating rays.

Abstract: The image evaluation method and apparatus check for image abnormalities. In the method and apparatus, a Mahalanobis space is set preliminarily using a specified characteristic quantity extracted from specified image data. Then, Mahalanobis distance in the Mahalanobis space using image data read from an image to be evaluated. The calculated Mahalanobis distance is compared with a specified threshold value to check for the image abnormalities in the image to be evaluated. The method and apparatus provide a quantitative criterion in checking for abnormal image and enable image evaluation to be performed in a simple and rapid manner to realize efficient inspection.

Abstract: A monolithic semiconductor optical device with excellent temperature and modulation characteristics and associated method of manufacturing whereby the device has a semiconductor substrate, a semi-insulating buried heterostructure GaInAsP-based DFB laser; and either a buried ridge type AlGaInAs-based EA or a self aligned structure (SAS) AlGaInAs-based EA modulator.

Abstract: A phantom, adapted to be radiation-imaged to obtain a radiation image for evaluation in inspection of a radiation imaging system, is capable of performing both the quantitative evaluation and the visual evaluation of the radiation image easily with a low cost and increasing accuracy of the constancy evaluation of the radiation imaging system. The phantom includes a base plate; a first member disposed on the base plate and having a first image quality evaluating pattern formed thereon to be used for visual evaluation as to a predetermined image quality evaluation item; and a second member disposed on the base plate and having a second image quality evaluating pattern formed thereon to be used for quantitative evaluation as to the predetermined image quality evaluation item.

Abstract: A radiation image recording medium is exposed to radiation passing through an object to record a radiation image of the object carried by the radiation. A heavy-element-containing phosphor sheet which is formed by heavy-element-containing phosphors containing therein a heavy element to emit light in an amount corresponding to the dose of radiation irradiated thereto is opposed to the radiation image recording medium on the side opposite to the object. A detector detects light emitted from the heavy-element-containing phosphor sheet.

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of a stimulable phosphor sheet, on which a radiation image has been stored, the stimulating rays causing the sheet to emit light in proportion to an amount of energy stored thereon during its exposure to radiation. Light emitted from the exposed linear area of the sheet is received with a line sensor comprising photoelectric conversion devices arrayed along each of a length direction of the linear area of the stimulable phosphor sheet and a direction normal to the length direction. The sheet is moved with respect to the line light source and the line sensor and in a direction different from the length direction of the linear area of the sheet. Operation processing is performed on outputs of the photoelectric conversion devices, which outputs have been obtained at respective positions of movement and correspond to an identical site on the sheet.

Abstract: The digital radiation image evaluating method and apparatus record previously at least two radiation images with different exposed doses of the radiation, determine a value of evaluation of at least one of granularity and image quality of a digital radiation image for each of at least two digital radiation images obtained from at least two radiation images to obtain at least two values of evaluation, construct from at least two values of evaluation a correction curve for the value of evaluation to the exposed dose of the radiation and calculate by means of the correction curve the value of evaluation of the digital radiation image of a given dose exposed to the radiation. By the method and apparatus, the correct value of evaluation of the granularity and image quality of digital radiation image can be obtained for precisely predetermined doses exposed to radiation.

Abstract: A quality control system for an irradiation apparatus includes a radiation image reading system. The radiation image reading system reads out a radiation image from a stimulable phosphor panel which is disposed in a predetermined position to receive irradiation of position check radiation from an irradiation system and irradiation of uniform radiation from the irradiation system to an area larger than the area exposed to the position check radiation and to receive irradiation of position check light in a visible region from a position check light irradiation system after receiving the irradiation of the uniform radiation and to form a radiation image. A relative position obtaining system obtains the relation between the irradiating position of the position check radiation and the irradiating position of the position check light on the basis of the radiation image read by the radiation image reading system.

Abstract: A radiography system and the machine readable medium storing program for accurately determining the type of the object taken by the radiography. The radiography system includes: a radiographic image receiving section for receiving the radiographic image of the object using the radiation; an optical image receiving section for detecting light from the object, and for receiving the optical image of the object; an object type determination section for determining an object type of the radiographic image received by the radiographic image receiving section based on the optical image received by the optical image receiving section; and an image storage section storing thereon the radiographic image received by the radiographic image receiving section in association with the object type determined by the object type determination section, and for storing the radiographic image and the object type, being associated with each other.

Abstract: A radiation image detecting system includes a solid radiation detector. The solid radiation detector is formed by a conversion layer which converts radiations bearing thereon image information to electric charges, and a two-dimensional image reader which detects the electric charges obtained by the conversion and is formed by a two-dimensional array of a plurality of solid radiation detecting elements. A high frequency component attenuation phosphor layer attenuates high frequency components of the electric charges bearing thereon high frequency components of the image information not lower than a Nyquist frequency, which is defined by the pitches of the array of the solid radiation detecting elements, so that aliasing noise due to the high frequency components of the image information not lower than the Nyquist frequency becomes not stronger than 30% of intrinsic noise power at a frequency equal to a half of the Nyquist frequency.

Abstract: A vehicle floor panel has curved portions formed thereon and protruding downwardly in a spherical fashion, and each of which is surrounded by a substantially horizontal portion. Ribs extending from the curved portions to a vertical wall portion of a tunnel portion and protruding upwardly are provided. Ribs extending between the curved portions and protruding downwardly are also provided. Furthermore, ribs protruding upwardly are provided. According to the construction, the rigidity of various types of vehicle floor panels can be enhanced in an ensured fashion.

Abstract: A radiation image readout apparatus for reading out, by use of a line sensor formed of a plurality of photoelectric converting elements arranged in a straight line, a radiation image stored on a stimulable phosphor sheet etc., wherein the occurrence of a Moiré effect in the final image is controlled by preventing feedback distortion, is provided. A focusing optical system formed of a first lens array for causing a stimulated emission to become a parallel luminous flux and a second lens array for focusing the parallel luminous flux onto a dichroic mirror and line sensor for transmitting the parallel flux is provided. The refraction ratio of the second lens array and the positional relation of the second Selfoc lens array and the dichroic mirror are adjusted so that the MTF is 50% or less of the Nyquist frequency determined by the width of the direction X of the photoelectric converting elements.

Abstract: One surface of a stimulable phosphor sheet supported at a position for image recording is exposed to radiation. A radiation image having thus been stored on the sheet is read out. Energy remaining on the sheet is released by irradiating erasing light to an entire area of the sheet with an erasing light source located on a side of the other surface of the sheet supported at the position for image recording, which other surface is opposite to the one surface of the sheet exposed to the radiation. A filter having transmitting properties with respect to the erasing light and good absorbing properties with respect to the radiation is located on a side of the erasing light source, which side stands facing the sheet.

Abstract: A radiation image read-out apparatus includes a radiation image convertor panel. A stimulating light projecting system projects stimulating light onto the radiation image convertor panel, and a sensor detects stimulated emission emitted from the radiation image convertor panel upon exposure to the stimulating light beam. The stimulating light projecting system projects, onto the radiation image convertor panel, stimulating light in a wavelength range where the rate of change of the intensity of the stimulated emission to a given change of the wavelength of the stimulating light is not larger than 1.0%/nm and is not smaller than −1.0%/nm.

Abstract: A process for purifying ammonia removing impurities contained in a crude ammonia which comprises contacting a crude ammonia with a purification agent comprises: a manganese oxide (1), and at least one kind of metal oxide (2) selected from vanadium oxide, chromium oxide, stannic oxide, zirconium oxide, bismuth oxide, niobium oxide and tantalum oxide as an effective component; wherein a ratio between a number of manganese atom and a number of the entire metallic atoms of the effective component is 80 to 99%; and preferably further contacting with a synthetic zeolite. The purification agent enables to remove a slight amount of impurities such as oxygen, carbon dioxide and moisture to an extremely low concentration, and any repeated reproduction of the purification agent does not reduce the capability of removing impurities in crude ammonia, and the longevity of the purification agent was remarkably elongated than the conventional purification process.