Abstract: An arrangement for an aircraft turbine engine, including a shaft and a follower element rotatably coupled to the shaft by a spline connection, the arrangement including upstream and downstream connections for radially centring the follower element relative to the shaft; means for spraying a lubricant into a collection cavity; a passage for receiving lubricant, which passage opens into the collection cavity and into a cavity for lubricating the splines which is partially defined by the upstream and downstream radial centring connections; and a passage for discharging lubricant, which passage opens into the cavity for lubricating the splines and outside the arrangement.

Abstract: A propulsion system includes a drive shaft that rotates about an axis, a fan, a fan shaft that drives the fan about the axis, a reduction mechanism coupling the drive and fan shafts, a compression section driven by the drive shaft, and an inlet channel that extends between the fan and the compression section. The inlet channel includes inner and outer ferrules delimiting an air inlet flow path, the inner ferrule having a minimum radius. The reduction mechanism includes two reduction stages including two or more planet gears circumferentially distributed around the axis, each planet gear including a first portion meshed with the drive shaft and a second portion meshed with the fan shaft and being mounted fixed with respect to the inner ferrule and having a maximum radius greater than the minimum radius such that the air inlet flow path extends partly between the two or more planet gears.

Abstract: A method is proposed for managing interactions via a communication network between a first object and a second object connected by a link, the link connecting at least one function of the first object to at least one function of the second object. The network includes an assembly of objects. The includes, in the first object: storing at least one execution agreement relating to a link between two objects of the network, activating at least one link connecting a function of the first object, the link being included in at least one execution agreement.

Abstract: A method is proposed for managing interactions via a communication network between a first object and a second object connected by a link, the link connecting at least one function of the first object to at least one function of the second object. The network includes an assembly of objects. The includes, in the first object: storing at least one execution agreement relating to a link between two objects of the network, activating at least one link connecting a function of the first object, the link being included in at least one execution agreement.

Abstract: A method of interaction between a digital object representing at least one real or virtual object located in a first geographical perimeter and a pointing device, used in a second geographical perimeter. A unit accesses a first data base referencing digital objects and memorizing a geographical position in the first geographical perimeter for each digital object. The method includes: setting up a communications channel between the unit and a tracking device capable of obtaining pointing information on the pointing device; receiving, pointing information representing a real orientation of the pointing device in the second geographical perimeter; and identifying, depending on the pointing information received and on a starting virtual position and a starting virtual orientation assigned to the pointing device in the first geographical perimeter, a digital object of the first geographical perimeter, the geographical position of which is virtually pointed at by the pointing device.

Abstract: A method of controlling movement of a line of sight of a video camera mounted on a mobile videoconferencing terminal includes: a) a step (72) of using at least two microphones spaced apart from each other in three dimensions and attached to the mobile terminal to pick up a sound uttered by a user of the mobile terminal, b) a step (74) of responding to the signals from the microphones to establish a direction in which the mouth of the user is located, and c) a step (76) of controlling movement of the line of sight as a function of the direction established during step b).

Abstract: A method of controlling movement of a line of sight of a video camera mounted on a mobile videoconferencing terminal includes: a) a step (72) of using at least two microphones spaced apart from each other in three dimensions and attached to the mobile terminal to pick up a sound uttered by a user of the mobile terminal, b) a step (74) of responding to the signals from the microphones to establish a direction in which the mouth of the user is located, and c) a step (76) of controlling movement of the line of sight as a function of the direction established during step b).

Abstract: This image-taking system includes: at least one controllable motor (30, 32, 34) suitable for moving an image-taking point of a first mobile telephone in response to movement instructions received by the first mobile telephone, and a second telephone (42) including a module (60) for sending movement instructions to the first mobile telephone over a telephone network.

Abstract: The invention concerns a method for automatically identifying an object in a photograph comprising: a step (214) of extracting a geographical position and a viewing direction of an objective from data associated with a photograph; a step (234) of determining a straight line oriented on the basis of the extracted viewing direction; a step (236) of selecting in a cartographic database at least one object based on the distance calculated between its geographical position and the oriented straight line; a step (242) of displaying data on the or each selected object.

Abstract: This image-taking system includes: at least one controllable motor (30, 32, 34) suitable for moving an image-taking point of a first mobile telephone in response to movement instructions received by the first mobile telephone, and a second telephone (42) including a module (60) for sending movement instructions to the first mobile telephone over a telephone network.

Abstract: The invention relates to a system for interchanging optical signals over an optical fiber. The system comprises an optical component of the spectrograph type having an array of waveguides, an optical signal emitter and an optical signal receiver, a channel of one of the couplers of the optical component being connected to the optical fiber, a first channel and a second channel of the other coupler of the optical component being connected respectively to an inlet of the receiver and to an outlet of the emitter, and the said other coupler having a third channel connected to a port of another optical component of the system.

Abstract: The present invention relates to an optical component of the waveguide array spectrograph type, the component comprising an inlet coupler and an outlet coupler between which said array extends, and including optical channels constituting inlets and outlets for the inlet and outlet couplers, the component being suitable for multiplexing and/or demultiplexing two optical signals of different wavelengths conveyed by two channels of the same coupler, wherein the waveguides of the array have lengths that are distributed in such a manner that two spectrum ranges of different center wavelengths both occur in said same coupler, said different wavelengths that are conveyed by the two channels each belonging to a different one of the free spectrum ranges.

Abstract: The present invention concerns a device forming an optical multiplexer and/or demultiplexer of the type including two plane optical surfaces separated by an array of waveguides having controlled differences in length, wherein each waveguide comprises at least two spans placed in series and having respective lengths and refractive indices that are suitable for controlling the influence of temperature variations on the device.

Abstract: The present invention relates to a multiplexer and/or demultiplexer optical component of the waveguide array spectrograph type, the component comprising an inlet coupler and an outlet coupler in a star configuration between which said array extends, the array having a first directed mean direction on departure of the waveguides of the array from the inlet coupler, and a second directed mean direction on arrival of the waveguides of the array at the outlet coupler, and presenting a directed general axis defined as being the axis passing through the centers of the couplers and on which a single positive direction is defined, and in which the first and second directed directions have respective directive angles measured algebraically from the general directed axis, which angles have the same sign.

Abstract: The present invention relates to a multiplexer and/or demultiplexer optical component of the waveguide array spectrograph type, wherein the waveguides are numbered in order of increasing optical path length, the optical path lengths of the waveguides describing a function of waveguide number which varies about a mean linear function, a difference measured between said waveguide number function and said mean linear function describing a difference function not limited to a set of two linear functions, said difference function being suitable for giving the optical component a spectral response that is square in shape.

Abstract: A spectrographic type multiplexer and/or demultiplexer optical component having an array of waveguides, the component comprising a star inlet coupler and a star outlet coupler with said array extending therebetween, and also comprising an inlet light guide and an outlet light guide for said inlet and outlet couplers, respectively, wherein the spectrum response of the component is the sum of two substantially Gaussian spectrum responses of peaks that are offset in wavelength.

Abstract: The invention relates to a multi-wavelength filter that is insensitive to polarization, comprising a bundle of optical waveguides made on a common substrate and organized in such a manner that the wavelength response of the filter depends on the phase shifting to which the light propagating in the waveguides is subject. The filter also comprises polarization rotators placed on the path of the light in such a manner that in each of the optical waveguides the light paths for the TE and TM polarization modes are of equal length. The polarization rotators are of the type comprising means for loading each optical waveguide and for creating asymmetry in the effective refractive index thereof.

Abstract: The invention relates to a multi-wavelength filter having a bundle of optical waveguides formed on a common substrate and organized in such a manner that the wavelength response of the filter depends on the phase shifting to which light is subjected in the optical waveguides of the bundle. The filter is of the type in which polarization insensitivity is obtained by varying the birefringence of the optical waveguides. The optical waveguides of said bundle have the same birefringence in two end zones while in an intermediate zone they have birefringence that is different from that of said end zones. In the bundle of waveguides, the transitions between intermediate zone and the end zones extend along respective planes that are inclined relative to the direction of light propagation along the waveguides. The portions of the waveguides situated respectively in the intermediate zone and in an end zone are interconnected by means of respective mode matchers that are hourglass-shaped.

Abstract: A semiconductor opto-electronic device including at least one electronic function component (62), at least one optical function component (60) and a mode transformer associated with the optical function component. At least some layers of semiconductor material constituting the electronic function component also form optical layers in the mode transformer zone and, at least in the mode transformer zone, these semiconductor material layers are non-absorbent at the operating wavelength. The mode transformer is preferably etched in the shape of an hourglass.

Abstract: This invention concerns an optoelectronic device, characterized in that it comprises, integrated by deposition in a single epitaxy on a semi-insulating substrate: at least one mode adapter (T), at least one optical amplifier (OA), at least one filter (MUX) capable of separating different wavelengths of the signal, at least one photodetector (D) and at least one guide (G) ensuring the link between the above-mentioned elements.