Abstract: An optronic observation device including a detector having a photocathode and a sensor arranged to receive an incident light beam. The device also including a switch to position an optical element opposite the detector in the pathway of the incident beam or to retract the optical element and a focusing element to focus an incident ray on the photocathode when the optical element is in a retracted position. When the optical element is positioned opposite the detector, it is able to focus the beam on the sensor and to filter the beam spectrally to block all or part of the wavelengths for which the responsiveness of the photocathode is greater than a given threshold.

Abstract: The invention relates to a person identification control method and to a system for implementing same. The inventive method comprises the following steps consisting in: detecting biometric data (23, 48, 79, 94, 108) relating to at least one person; seeking a concordance between the biometric data relating to the person and biometric data that have been pre-stored in a biometric database (26, 51, 83, 97, 110), said pre-stored biometric data relating to persons for whom identification means have already been generated; and, when no concordance is found, generating an identification means (29, 56, 84, 98, 103, 111) that is associated with the person from the biometric data relating to the person and at least one identity (24, 49, 80, 95, 117) for said person.

Abstract: The invention relates to a device for displacing a moving part along a longitudinal axis relative to a housing, said device being symmetrical about a plane extending longitudinally relative to the moving part, the device comprising two structures that are secured to said moving part and elements of active material comprising at least two blocks extending between inside walls of each structure, with the elongation directions of the blocks being antisymmetrical about an axis substantially perpendicular to the displacement axis of the moving part, wherein the structures are flexible and suitable for displacing the moving part by deforming as a function of the elongation of the blocks.

Abstract: In an implementation in rate gyro mode, the method includes exciting the vibrating member with a combination of control signals including an amplitude control signal at a frequency twice the resonant frequency, and a quadrature control signal at DC. In free gyro mode, the method includes the steps of applying a combination of signals to common electrodes 5 and of applying the combination in alternation to main electrodes 5.1 and 5.2 and to auxiliary electrodes 7.1 and 7.2 interleaved between the main electrodes.

Abstract: In an implementation in rate gyro mode, the method includes exciting the vibrating member with a combination of control signals including an amplitude control signal at a frequency twice the resonant frequency, and a quadrature control signal at DC. In free gyro mode, the method includes the steps of applying a combination of signals to common electrodes 5 and of applying the combination in alternation to main electrodes 5.1 and 5.2 and to auxiliary electrodes 7.1 and 7.2 interleaved between the main electrodes.

Abstract: The vibrating sensor includes a cell fixed in a housing, the cell including a support member and a vibrating member connected to the support member, together with a thermal masking element extending between the vibrating member and a wall of the housing.

Abstract: The hemispherical resonator comprises a bell fixed to a base which carries main electrodes extending in register with an edge of the bell, and a shield electrode subdivided into two portions each presenting auxiliary electrodes extending in regular manner between the main electrodes.