Optical fibre (4), comprising a core (1) and sleeve (2), comprises one or more end peaks (3) of a transparent polymer made by a processes that allows peaks of different dimensions to be made. Optical fibre (4), comprising a core (1) and sleeve (2), comprises one or more end peaks (3) of a transparent polymer made by a processes that allows peaks of different dimensions to be made. The height of the peak(s) can vary from a few microns to several hundred microns, while the radius of curvature of its tip is less than 5 microns. The peaks, produced with the aid of a polymer droplet applied with a pipette (5), can be partially metallized, and are made by a procedure that allows a single peak or multiple peak to be made according to selected modes.; The chemical composition of the peaks is adapted according to the required viscosity value and then heated or cooled to produce the desired height. The final radius of curvature is adjusted according to the intensity of the photo polymerizing light injected and the exposure time. The dimensions of the peaks can be adjusted for fibre-to-fibre couplings, or selected to give maximum coupling between a fibre and a laser diode.

La présente invention concerne un spectromètre comprenant un dioptre (11), des moyens de capture (15,18) au niveau dudit dioptre (11) d'un interférogramme (12) issu de deux faisceaux d'interférence (F1, F2) et formant des lignes d'interférence (13) suivant l'axe transversal (Ox) de l'interférogramme (12) appartenant au plan (xOy) du dioptre (11), lesdits moyens de capture (15,18) comprenant un réseau (18) d'éléments de détection (19) agencé pour détecter la répartition spatiale dudit interférogramme (12), caractérisé en ce que ledit réseau (18) d'éléments de détection (19) est bidimensionnel et en ce qu'au moins une partie desdits moyens de capture (15, 18) et ledit interférogramme (12) sont inclinés l'un par rapport à l'autre suivant l'axe transversal (Ox) de l'interférogramme (12); .La présente invention concerne également un dispositif d'imagerie spectroscopique comprenant des moyens d'émission de deux faisceaux d'interférence (F1, F2) et un tel spectromètre.

The invention relates to a device particularly intended for sports training, for example for cycling competitions. The device comprises an exercise system (2) with which a sportsman engages so as to generate a fictitious movement at a certain speed, according to a certain positioning angle. A database is provided in the form of an optical record concerning said movement. Said database contains images of the landscape surrounding the movement and also stores positioning information (climbing/downhill) for determining said positioning along the entire movement.

The invention relates to a device comprising a means for compensating for the effects of the temperature for cells used to provide reverberation effects in an auditorium. The invention therefore prevents the unpleasant effects of the Larsen effect. The invention can be used in the sound system of a concert hall.

The invention concerns a system for processing a sound signal comprising an amplifier, an analog-to-digital conversion circuit or a digital-to-analog conversion circuit, a filtering circuit, end processing elements and a circuit for adding filtered signals, so as to deliver at least an output signal, said end processing elements being sound sensors or loudspeakers. The invention is characterized in that the filtering circuit is optimized in accordance with the characteristics particular to the end processing elements and in accordance with their geometric implantation and it comprises at least a directive lobe and an output circuit delivering an output signal through directive lobe.

The invention relates to a smoke-producing composition for testing fire-prevention devices, to a method for manufacturing such a composition and to a container for holding such a composition. Said smoke-producing composition for testing fire-prevention devices is made from a potassium nitrate with a mixture of potato flakes and potato starch added theret.

The present invention relates to a food additive composition to be added to sugar or sweetened products containing cariogenic free sugars or by-products thereof, enabling a reduction of the adhesion of dental biofilms and the appearance of caries while strengthening the tooth and the dental support tissue. The present invention also relates to food products made of cariogenic free sugars or by-products thereof containing said food additive product, as well as to a method of manufacturing such a food product containing said food additive composition, such as a chocolate.

Machining a workpiece made from a titanium-based alloy comprises heating the workpiece in a hydrogen-containing atmosphere to accept the hydrogen, cooling the workpiece, machining the workpiece, and heating the workpiece in a hydrogen-free atmosphere to dissolve the hydrogen. - Independent claims are also included for: - (a) Workpiece used in the above process; and - (b) Alloy for the production of the workpiece comprising a titanium-based alloy containing 0.3-3 at.% lanthanum.

The process involves measuring carbon dioxide rate of a predetermined period in regular time intervals. A confinement index is determined from the measurements at the end of measurements of the rate of the carbon dioxide. A level of confinement is reduced until the level reaches a carbon dioxide rate equal to a predetermined threshold that is less than another threshold when the measurement of the rate of carbon dioxide exceeds the predetermined threshold. An independent claim is also included for a device for regulating and controlling level of confinement of indoor air.

The fan (1) has a mobile part (3) comprising three walls (14) each extending from an outer edge (16) of an opening (15a) to an inner edge (17) of an opening (15b) adjacent to the opening (15a). The walls are shaped and two adjacent walls are positioned such that the openings are situated in radial planes with respect to the mobile part. The mobile part is made of a single metallic piece, placed over a fixed lower base (2) and comprises a common axis (D).

The invention relates to a receiver of a system for determining at least one piece of positioning information for said receiver, the receiver (2) including: - a means for receiving each code sequence; - a means (35) for generating a signal identical to the code and referred to as a "reply"; - a means (63) for determining the positioning information of the receiver (2) from determination of the time lag between the reply and a code sequence for two consecutively received code sequences; and - a first (53) and a second (62) loop for controlling the reply to each received code sequence within a first and respectively second pull-in range, the second pull-in range being wider than the first pull-in range. The receiver (2) comprises a switching means (66) capable of opening and closing the second control loop (62).

The present invention relates to a method for encapsulating structures (11) (typically MEMS structures) supported by a carrier substrate (12) (typically made of glass or silicon), which method comprises: application, on the carrier substrate (12), of at least one cover (7) supported by a mould (1, 2, 6), the mould comprising a catching layer (6), each cover (7) being in contact with the catching layer (6); then fastening of at least one cover (7) onto the carrier substrate (12); and then separation of the mould (1, 2, 6) from the at least one cover (7). The catching layer (6) comprises a fluoropolymer. Preferably, the mould (1, 2, 6) is separated from the at least one cover (7) by mechanical means, by pulling the mould (1, 2, 6) away from the at least one cover (7). Thus, the mould (1) can be reused, which considerably simplifies encapsulating operations carried out on an industrial scale.