Thomson-Csf

Thomson-Brandt Armements

Commissariat a L'energie Atomique

Dominique Broussoux

Francois Micheron

Jean-Claude Dubois

Hugues Facoetti

Pierre Le Barny

Philippe Robin

Jacques Trotel

Jean-Marc Bureau

Pierre LeBarny

Marc Lagarde

Jean Claude Dubois

Daniel Dolfi

Pierre Leclerc

Alain Staron

Jean-Luc Ayral

Pierre Ravinet

Claude Vergnolle

Francois Henry

Patrick Petit

Sophie Esselin

Francois Bernard

Sylvain Lazare

Sophie Muller

Michel C Ceccaldi

Andre Winaver, Deceased

Jean Collard

Marie-Therese Daumas

Lucien Monnerie

Daniel Bernard

The process for manufacturing parts of revolution which are made from a high-density metal with great regularity of reproducibility, especially as regards the homogeneity of the matter. It consists in carrying out the following steps: forging in three dimensions by successive upsetting and drawing-out operations carried out in three perpendicular directions; closed-die forging; and recrystallisation heat treatment. Application to the manufacture of hollow-charged coatings made of tantalum.

Process for manufacturing metal parts by free forging and drop forging

The detonating device for a secondary explosive charge includes energy reservoir means and exploding foil igniter means coupled to the energy reservoir means by an optical commutator functioning in photo-conduction mode. The device may be extended to any number of separate detonation channels, and each detonation channel may be supplied with optical pulse beams generated by a single laser source or by separate, dedicated laser sources. The optical pulse beams are guided via optical fibers that may vary in length in accordance with preprogrammed detonation timing sequences. The invention finds particular application in the field of high safety detonation systems.

Detonating device for a secondary explosive charge

The invention is a series of amorphous copolymers which, used in association with a small molecule, provide photorefractive materials that can be used in optical signal processing. These copolymers contain an active non-linear optical group and a group which contributes to their photoconductivity. ##STR1## where: X is H, CH.sub.3, Cl or F

Amorphous copolymers for photorefractive compounds used in optical

Process for obtaining a structure generating non-linear electrooptical

The invention is a family of amorphous copolymers, transparent in the visible range, for use in non-linear optical applications. The copolymers are produced by copolymerizing an alkyl methacrylate or an alkyl acrylate or a .gamma. alkyl acrylate halide or an alkyl phenylacrylate or a .gamma. trifluoromethyl acrylate with a monomer containing the entity which generates the second-order non-linear effects.

Amorphous copolymers, transparent in the visible range, for non-linear

The invention is a method of producing a multilayer polymer-metal system to interconnect integrated circuits which allows two-dimensional electrical and/or optical connections between components, in which a first layer of polymer is deposited on a rigid substrate such that the layer can be separated from the substrate, in which a multilayer interconnection system is then produced on this first layer using industrial methods and in which the rigid substrate is removed after installation and connection of the integrated circuit.

Process for manufacturing a multilayer integrated circuit interconnection

Disclosed is a method for the making of microlenses for optical applications (display for example) resulting from the deposition of a liquid on a substrate, the surface of which has been locally modified so as to increase the wetting capacity of the liquid thereon. The substrate may be a polymer and the wetting liquid may be an organic fluid capable of hardening by an adapted treatment.

Method for the making of microlenses for optical applications

The invention concerns a reticulable polymer for use in non-linear optics, the polymer being constituted of a skeleton to which side chains are attached; one chain ensures the amorphous nature of the polymer, the skeleton consisting of polyacrylic, polystyrene or polysiloxane, and a second side chain able to generate non-linear optical effects and terminating in a heat or photochemically reticulable group.

Reticulable polymer for applications in non-linear optics

Disclosed is a spatial light modulator of the type associating a layer of liquid crystal (2) with a layer of a photoconductive material (1), the photoconductive material being based on polysilane or polygermane.

Photoconductive polymer based spatial light modulator

Disclosed is a process for the synthesizing of polysilsesquioxane, including a first step for the hydrolysis, in the presence of ether, of trichlorosilane with the general formula RSiCl.sub.3 where R represents an organic radical, notably an alkyl, an aryl, a vinyl or an allyl, said process further including the following steps;

Process for the synthesis of polysilsesquioxanes and application of the

A device to eliminate ice formed on the surface of a wall, notably on the surface of an optical or radio-electric window, comprises a piezoelectric material having a vibrating active surface that mechanically cooperates with the wall to be de-iced, and means for the polarization of this piezoelectric material, comprising an AC voltage source and conducting or semiconducting electrodes placed in contact with this material according to a geometry capable of generating, within this material, an acoustic wave that has a direction of vibration which is oriented longitudinally and/or transversally to said surface to be de-iced, the amplitude of this vibration being sufficient to respectively detach and/or break the deposit of ice formed on said surface. The piezoelectric material is preferably a ferroelectric polymer such as a polymer of the group comprising PVF.sub.2, PVF.sub.2 -TrFE, PVDCN-VAc, PVF.sub.2 -TFE and the mixture of these polymers with one another and/or with PMMA or PEMA. The electrodes are preferably formed into a thin layer deposited on the surface of the piezoelectric material, and their material is then advantageously a material of the group comprising resistive indium-tin oxide, the polymers that are conductive in a matrix, hydrogenated amorphous silicon and polyimides charged with organic salts.

Device for the removal of the ice formed on the surface of a wall,

Disclosed is an optical component for applications in integrated optics, including a substrate that supports a stack of three polymer layers: a lower layer deposited on the substrate, a central layer and an upper layer, the lower and upper layers having optical indices smaller than that of the central layer which is electrooptical and designed to convey a light beam, the lower layer or the upper layer possessing zones having indices of different values to create a zone of confinement of the light beam in the central layer.

Optical component for applications in integrated optics

Disclosed is an electrically conductive composite polymer film formed from an organic matrix and conductive charges. The matrix is a polymer obtained from a filmogenic macromolecular latex and the conductive charges consist of a conductive polymer diffused in the matrix. The invention can be applied to microwave absorbent layers.

Conductive composite polymer film and method for its manufacture

An infrared detector based on pyroelectric material, of the type associated with a reading circuit prepared on a semiconductor substrate, the substrate also supporting conductive blocks designed to transmit the electrical signals generated by the pyroelectric material towards the reading circuit. Each conductive block corresponds to a picture element or pixel, wherein the detector is formed by a layer of pyroelectric material deposited on that side of the semiconductor layer having the conductive blocks. The pyroelectric material has a thermal conductivity of K&lt;1 W/m..degree.K., a counter-electrode covering the layer of pyroelectric material on the side opposite the conductive blocks.

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Marcoussis, France

Dominique Broussoux