OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA) Patent applications |
Patent application number | Title | Published |
20150301333 | DEVICE FOR CONTROLLING THE PHASE OF AN OPTICAL WAVEFRONT - According to one aspect, the invention relates to a device ( | 10-22-2015 |
20150194787 | OPTIC FIBER AMPLIFIER HAVING A HIGH BRILLOUIN THRESHOLD AND METHOD FOR MAKING SUCH AN AMPLIFIER - According to one aspect, the invention relates to an optic fiber amplifier having a high Brillouin threshold, and including: an amplification optic fiber ( | 07-09-2015 |
20140240166 | DEVICE FOR CLUTTER-RESISTANT TARGET DETECTION - The invention relates to a device for passively or actively detecting a target which scatters a useful signal and which is immersed in an observed area comprising elements that are likely to generate clutter echoes forming a non-useful signal, the useful signal having a coherent scattering lobe that is greater than that of the non-useful signal for a given wavelength and given direction, said device including means for receiving the signal scattered by the target, said receiving means including: at a given moment t, at least two separate reception portions having the same polarization, each portion including at least one receiver and one phase center; and a processing means enabling the mutual correlation between at least two received signals, or between at least two signals constructed from signals received at a moment t, each of said received signals being received by a receiver of one of said at least two separate reception portions, characterized in that the phase centers of said at least two reception portions are arranged such that the both of the latter are located in the coherent scattering lobe of a possible useful signal and such that both of the latter are not located in the coherent scattering lobe of the non-useful signal, so as to enable said processing means to detect a possible useful signal present of the non-useful signal, the minimum required distance between said phase centers being that which is required for observing a first decrease in the coefficient of correlation of said at least two constructed signals. | 08-28-2014 |
20140145793 | Module for the Mechanical Uncoupling of a Resonator Having a High Quality Factor - The device ( | 05-29-2014 |
20140111651 | IMAGING SYSTEM COMPRISING A FRESNEL LENS - The imaging system for imaging field rays comprises a detection surface, a device for focusing the field rays with said detection surface, and a diaphragm. Said device comprises a Fresnel lens comprising a first dioptre, the non-plane surface of which, called the active zone, makes it possible to focus the field rays towards said detection surface, and said diaphragm allows controlled distribution of the field rays over said active zone. | 04-24-2014 |
20120279303 | ELECTRODES AND ASSOCIATED ELECTRONIC CIRCUITS FOR A PIEZOELECTRIC VIBRATING GYROMETER - The Coriolis-effect gyrometer has a tuning fork having two tines ( | 11-08-2012 |
20100321184 | SYSTEM FOR DETECTING PERSONS IN A DEFINED SPACE | 12-23-2010 |
20090262364 | METHOD, PHASE GRATING AND DEVICE FOR ANALYZING A WAVE SURFACE OF A LIGHT BEAM - The application relates to a method for analyzing the wave surface of a light beam from a source to the focus of a lens. The beam illuminates a sample on the analysis plane and having a defect. A diffraction grating of the plane is a conjugate of an analysis plane through a focal system. An image is formed in a plane at a distance from the grating plane and analyzed by processing means. The invention encodes this grating by a phase function resulting from the multiplication of two phase functions, a first exclusion function defining a meshing of useful zones transmitting the beam to be analyzed in the form of light pencil beams, and a second phase fundamental function which creates a phase opposition between two light pencil beams coming out of adjacent meshes of the exclusion grating. | 10-22-2009 |