Abstract: A device allowing the angular emission pattern of a source to be measured without mechanical movement comprises, in succession, along its optical axis: a first objective, called the Fourier objective, arranged to form a Fourier surface each point of which corresponds to one direction of observation of the object; a diffuser used in transmission and placed on the Fourier surface; a substance of optical density placed upstream of the diffuser and arranged to attenuate the light backscattered toward the Fourier objective and the areal source; and a video photometer located downstream of the plane of the diffuser and arranged to image the surface of the diffuser.

Abstract: A system for measuring the spatial distribution of the spectral emission of a measurement zone of an object, comprises: a first objective; means for selecting a portion of an image formed by the first objective; a diaphragm; light-dispersing means located in the vicinity of the diaphragm and allowing the light coming from the selecting means to be dispersed; and a second objective placed between the selecting means and the diaphragm, interacting with the first objective so that the aperture of the diaphragm is optically conjugated with the measurement zone by the first and second objectives. The first objective forms an image on a predetermined Fourier surface on which each point corresponds to an emission direction of the object for one particular wavelength. The selecting means have a selection surface shaped depending on the predetermined. Fourier surface, and the selecting means are placed on the predetermined Fourier surface.

Abstract: System (100) for measuring the spatial distribution of the spectral emission of a measurement zone (2) of an object (1), comprising: a first objective (202); means (204) for selecting a portion of an image formed by the first objective; a diaphragm (208); light-dispersing means (210) located in the vicinity of the diaphragm and allowing the light coming from the selecting means to be dispersed; a second objective (206) placed between the selecting means and the diaphragm, interacting with the first objective so that the aperture of the diaphragm is optically conjugated with the measurement zone by the first and second objectives and so that the measurement zone.

Abstract: A matrix screen for displaying multiplexed colour images, wherein the screen comprises several selection modules each connected to at least one colour source, in that each selection module comprises different selection terminals, a single selection terminal per selection module being activated during the same screen operating phase or sub-frame, and in that the optoelectronic devices of the screen belonging to the same colour family.

Abstract: A lens unit for observing an object, comprises an optical system comprising one or more successive lenses, and an optical device, comprising: at least one first optical element of the lens type, defining a front surface and a rear surface, the first optical element being produced from an optically transparent material and having a refractive index “n1”, a second optical element, defining a front surface and a rear surface, and being optically coupled by its front surface to the rear surface of the first optical element, the second optical element being produced from a material with a refractive index n2 and provided with at least one portion produced from a material optically absorbing visible light. The optical device being substituted for the lens of the optical system or at least for the end lens among the successive lenses in the optical system.

Abstract: A matrix screen for displaying multiplexed colour images, wherein the screen comprises several selection modules each connected to at least one colour source, in that each selection module comprises different selection terminals, a single selection terminal per selection module being activated during the same screen operating phase or sub-frame, and in that the optoelectronic devices of the screen belonging to the same colour family.

Abstract: A module includes a plurality of flexible prismatic cells for storing electricity. Each cell includes, on at least one of the edges thereof, a flexible and flat electrical terminal. The cells are arranged against one another in order to form a stack and the electrical terminals of the cells are aligned in the stack. The flexible and flat terminals of a pair of two adjacent cells in the stack, one being a positive terminal and the other being a negative terminal, are folded between the two cells. Two spacers are inserted in the fold of each of the two flexible terminals, respectively. A compressive force is exerted on the stack of cells such that at least a portion of the two flexible terminals are compressed against one another between the two spacers.

Abstract: A lens unit for observing an object, comprises an optical system comprising one or more successive lenses, and an optical device, comprising: at least one first optical element of the lens type, defining a front surface and a rear surface, the first optical element being produced from an optically transparent material and having a refractive index “n1”, a second optical element, defining a front surface and a rear surface, and being optically coupled by its front surface to the rear surface of the first optical element, the second optical element being produced from a material with a refractive index n2 and provided with at least one portion produced from a material optically absorbing visible light. The optical device being substituted for the lens of the optical system or at least for the end lens among the successive lenses in the optical system.

Abstract: A module includes a plurality of flexible prismatic cells for storing electricity. Each cell includes, on at least one of the edges thereof, a flexible and flat electrical terminal. The cells are arranged against one another in order to form a stack and the electrical terminals of the cells are aligned in the stack. The flexible and flat terminals of a pair of two adjacent cells in the stack, one being a positive terminal and the other being a negative terminal, are folded between the two cells. Two spacers are inserted in the fold of each of the two flexible terminals, respectively. A compressive force is exerted on the stack of cells such that at least a portion of the two flexible terminals are compressed against one another between the two spacers.

Abstract: A lighting device for liquid crystal display provides as output a polarized extended light flux. It comprises a light source 100 comprising a layer with high albedo A on the light emission surface SD(A), on which are stacked a quarter-wave plate 101 and a reflecting polarizer 103. This results in a light transmission gain of the order of 1+A, which makes it possible to produce displays with high luminance and low electrical consumption. Application to flat-screen displays.

Abstract: A lighting device for liquid crystal display provides as output a polarized extended light flux. It comprises a light source 100 comprising a layer with high albedo A on the light emission surface SD(A), on which are stacked a quarter-wave plate 101 and a reflecting polarizer 103. This results in a light transmission gain of the order of 1+A, which makes it possible to produce displays with high luminance and low electrical consumption. Application to flat-screen displays.

Abstract: A customer self-checkout system includes one or more checkout stations and multiple supervisor terminals. The supervisor terminals provide support to, and control over, the self-checkout system and checkout stations. A controller is used to coordinate communications among the checkout stations and supervisor terminals over a wired and/or wireless network interfaces. A user may provide input at supervisory terminal using an interface providing context sensitive prompting to enable control using a simple keyboard interface.

Abstract: A device for discriminating Cerenkov and scintillation radiation and a beam inspection device, including an inspection head comprising a scintillator and at least one ionizing radiation diffuser block, a device for discriminating Cerenkov and scintillation radiation, and an imaging system for forming an image from at least a part of the inspection head, along with a corresponding method. In order to suppress spurious Cerenkov radiation contributions to the scintillation radiation, the device has periodically arranged first and second filters, having different relative absorption properties with respect to scintillation radiation and ionizing radiation.

Abstract: A customer self-checkout system includes one or more checkout stations and multiple supervisor terminals. The supervisor terminals provide support to, and control over, the self-checkout system and checkout stations. A controller is used to coordinate communications among the checkout stations and supervisor terminals over a wired and/or wireless network interfaces. A user may provide input at supervisory terminal using an interface providing context sensitive prompting to enable control using a simple keyboard interface.

Abstract: A device for measuring the dimensional or structural characteristics of an object. A detector forms an optical Fourier transform image of an elemental surface of the object in an image focal plane. A processor produces data relating to at least one dimensional and/or structural characteristic of the object from the information provided by the detector.

Abstract: A customer self-checkout system includes one or more checkout stations and multiple supervisor terminals. The supervisor terminals provide support to, and control over, the self- checkout system and checkout stations. A controller is used to coordinate communications among the checkout stations and supervisor terminals over a wired and/or wireless network interfaces. A user may provide input at supervisory terminal using an interface providing context sensitive prompting to enable control using a simple keyboard interface.

Abstract: A customer self-checkout system includes one or more checkout stations and multiple supervisor terminals. The supervisor terminals provide support to, and control over, the self-checkout system and checkout stations. The supervisory terminals may be wireless terminals that can capture self-checkout customer identification information including signatures, fingerprints, images, and other forms of identification.

Abstract: A device for measuring the dimensional or structural characteristics of an object. A detector forms an optical Fourier transform image of an elemental surface of the object in an image focal plane. A processor produces data relating to at least one dimensional and/or structural characteristic of the object from the information provided by the detector.

Abstract: The invention relates to a device and a control process for a display screen with:

Abstract: A device for measuring the space distribution of the spectral emission of an object. The device includes a first lens forming in its Fourier plane an image constituting the optical Fourier transform of a zone of the object, a second lens, a diaphragm conjugated optically with the zone by the first and second lenses, a mechanism for selecting a rectilinear portion of the image, a mechanism for dispersion of the light corresponding to this portion, and a sensor receiving the dispersed light. The spectral response of the zone, for each point of the portion, is determined by signals from the sensor. The device is applicable in particular to display screens.