Abstract: An X-ray or infrared imagery apparatus that performs a large sweep while reducing the irradiation or illumination dose. It comprises a support, an X-ray or light ray source that emits a beam through a slit of a dose limiter which is driven in translation, a detector irradiated or illuminated by the beam in order to detect an intensity attenuated along the X-ray or light ray propagation path through the body, an analog-to-digital converter to convert the detected intensities into data in order to determine an attenuation of the X-rays or light rays by the body, and a programmed computer to process the data in order to obtain an image representing the attenuation of the X-rays or light rays. The dose limiter either is driven in translation at a speed proportional to the detector or driven in translation at the same speed than the detector in front of a reflector.

Abstract: X-ray imaging method, in which the data (c(a), ?(b)) are processed by a programmed computer using the following formula: C = ? ( b ) n + c ( a ) n - 1 2 n 2 ? ( ? k = 1 n ? c k ( a ) + ? u = 1 n ? ? u ( b ) ) to calculate a value (C) of the attenuation coefficient at a point (P0) of a set of points {P0}, for a given pair of said angular positions ?a and ?b, in order to obtain an image representing an X-ray attenuation coefficient for said set of points {P0} of the body (3).

Abstract: The invention relates to an X-ray imaging method, of the computed tomography type, in which a programmed computer is used to process data (c(a), ?(b)) in order to produce an image that expresses an X-ray attenuation coefficient at a series of points {P0} on a body to be examined, by calculating, for a pair of angular positions (?a, ?b), a value (C) of the attenuation coefficient at a point (P0), using the following formula: (formula 1).

Abstract: X-ray or infrared imagery apparatus, for radiography or scanning, comprising: a support for receiving a body (3) to be examined, a X-ray or light ray source provided with a focus for emitting a beam passing through a slit of a dose limiter driven in translation to sweep the body, a detector driven in translation to be irradiated or illuminated by the beam sweeping the body in order to detect an intensity attenuation along the X-ray or light ray propogation path through the body, an analog-to-digital converter to convert the detected intensities into data in order to determine an attenuation of the X-rays or light rays by the body to be examined, a programmed computer to process the data resulting from the conversion of the detected intensities in order to obtain an image representing the attenuation of the X-rays or light rays, and wherein the dose limiter is driven in translation at a speed proportional to the detector, controlled by the ratio of the distances between, on the one hand, the focus and the d

Abstract: Method and apparatus for X-ray imaging of a body, employing a support to receive a body to be examined, a source emitting a beam of X-rays, a detector irradiated by the beam, a converter for converting the detected intensities into data, a means for turning the mounted mobile support by an angle of rotation about an axis of rotation with respect to the source and the detector and a suitably programmed computer to average the data acquired for a pair of orthogonal angles of rotation to obtain n column and m line mean values for n and m elementary segments of a band of the detector, to construct an initial image (n, m) with the n column and m line mean values, to adjust the coefficient of attenuation in each n×m elementary zone by a method of least squares taking into account the n column and m line mean values regarded as constraints, to repeat the previous stages for data acquired with different pairs of preferably orthogonal angles of rotation, and to average term by term the adjusted images so as to arrive

Abstract: The inventive circuit breaker-contactor (1) comprises a fixed contact, a contact (5) movable (19, 21) with respect to the fixed contact between open and closed positions, means (7) for displacing the movable contact (5) in the closed position thereof, means (9) for displacing the movable contact in the open position.

Abstract: Method and apparatus for X-ray imaging of a body, employing a support to receive a body to be examined, a source emitting a beam of X-rays, a detector irradiated by the beam, a converter for converting the detected intensities into data, a means for turning the mounted mobile support by an angle of rotation about an axis of rotation with respect to the source and the detector and a suitably programmed computer to average the data acquired for a pair of orthogonal angles of rotation to obtain n column and m line mean values for n and m elementary segments of a band of the detector, to construct an initial image (n, m) with the n column and m line mean values, to adjust the coefficient of attenuation in each n×m elementary zone by a method of least squares taking into account the n column and m line mean values regarded as constraints, to repeat the previous stages for data acquired with different pairs of preferably orthogonal angles of rotation, and to average term by term the adjusted images so as to arrive

Abstract: A device for determining a refractive index (Rl) in a large number of points of a physical medium, comprising: a light laser for performing a series of p pulsed laser rays (PLRs) each proceeding from a starting point Ap and arriving in an arrival point Bp following the shortest optical path between the two points Ap and Bp; a timer to record a time Tp when each PLR reaches the arrival point Bp; and a computer programmed for finding the shortest optical path among all the optical paths starting from the starting point Ap and all reaching the arrival point Bp, and from p linear equations linking elementary optical paths (L) and the refraction indices (N) to the detected travel time Tp, for solving the matrix equation [N]*[L]=[T] relative to a vector of the refractive indices [N] and repeating until [L] and [N] converge.

Abstract: The inventive circuit breaker-contactor (1) comprises a fixed contact, a contact (5) movable (19, 21) with respect to the fixed contact between open and closed positions, means (7) for displacing the movable contact (5) in the closed position thereof, means (9) for displacing the movable contact in the open position.

Abstract: Method and apparatus for X-ray imaging of a body, employing a support to receive a body to be examined, a source emitting a beam of X-rays, a detector irradiated by the beam, a converter for converting the detected intensities into data, a means for turning the mounted mobile support by an angle of rotation about an axis of rotation with respect to the source and the detector and a suitably programmed computer to average the data acquired for a pair of orthogonal angles of rotation to obtain n column and m line mean values for n and m elementary segments of a band of the detector, to construct an initial image (n, m) with the n column and m line mean values, to adjust the coefficient of attenuation in each n×m elementary zone by a method of least squares taking into account the n column and m line mean values regarded as constraints, to repeat the previous stages for data acquired with different pairs of preferably orthogonal angles of rotation, and to average term by term the adjusted images so as to arrive

Abstract: Method and apparatus for X-ray imaging of a body, employing a support to receive a body to be examined, a source emitting a beam of X-rays, a detector irradiated by the beam, a converter for converting the detected intensities into data, a means for turning the mounted mobile support by an angle of rotation about an axis of rotation with respect to the source and the detector and a suitably programmed computer to average the data acquired for a pair of orthogonal angles of rotation to obtain n column and m line mean values for n and m elementary segments of a band of the detector, to construct an initial image (n, m) with the n column and m line mean values, to adjust the coefficient of attenuation in each n x m elementary zone by a method of least squares taking into account the n column and m line mean values regarded as constraints, to repeat the previous stages for data acquired with different pairs of preferably orthogonal angles of rotation, and to average term by term the adjusted images so as to arriv

Abstract: Method and apparatus for X-ray imaging of a body, employing a support to receive a body to be examined, a source emitting a beam of X-rays, a detector irradiated by the beam, a converter for converting the detected intensities into data, a means for turning the mounted mobile support by an angle of rotation about an axis of rotation with respect to the source and the detector and a suitably programmed computer to average the data acquired for a pair of orthogonal angles of rotation to obtain n column and m line mean values for n and m elementary segments of a band of the detector, to construct an initial image (n, m) with the n column and m line mean values, to adjust the coefficient of attenuation in each n×m elementary zone by a method of least squares taking into account the n column and m line mean values regarded as constraints, to repeat the previous stages for data acquired with different pairs of preferably orthogonal angles of rotation, and to average term by term the adjusted images so as to arrive

Abstract: Apparatus for moving at least one micro-rack using at least one piezoelectric motor driven by an oscillatory source as the moving force. The piezoelectric motor drives an extensible part, which engages a series of dihedrons formed along one side of the micro-rack, to provide a desired extension.