Patents by Inventor Arnaud DAVENEL
Arnaud DAVENEL has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230288717Abstract: A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.Type: ApplicationFiled: December 9, 2019Publication date: September 14, 2023Applicant: SAFRAN ELECTRONICS & DEFENSEInventor: Arnaud DAVENEL
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Patent number: 11740482Abstract: A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.Type: GrantFiled: December 9, 2019Date of Patent: August 29, 2023Assignee: SAFRAN ELECTRONICS & DEFENSEInventor: Arnaud Davenel
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Patent number: 11508032Abstract: The invention relates to an image sensor comprising: •an optical system (2a) for receiving an optical signal; •a Bayer matrix (4) located on the image focal plane of the optical system (2a), the Bayer matrix (1) comprising: a reference optical filter (B1) configured to eliminate or attenuate, in the received optical signal, a first band of wavelengths and to allow through, in the received optical signal, a second band length of wavelengths, and also eight optical filters adjacent to the reference optical filter (B1); •a phase mask (2c, 22, 28) arranged on a pupil (2b) of the optical system (2a) and configured to selectively project at least 98% of the energy of the optical signal carried in the first band of wavelengths and 98% of the energy of the optical signal carried in the second band of wavelengths on the reference optical filter (B1) and on at least one adjacent optical filter, which is configured to allow through, in the received optical signal, the first band of wavelengths.Type: GrantFiled: September 21, 2018Date of Patent: November 22, 2022Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud Davenel, Michel Jouffroy, Corentin Dubois, Yannick Guerin, Eric Robert-Charrerau
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Patent number: 11300384Abstract: An optical detection device is included in a self-guided flying vehicle, the self-guided flying vehicle being composed of a cone located at the head of the self-guided flying vehicle, a propulsion device located at the rear of the self-guided flying vehicle and a body located between the cone and the propulsion device. The optical detection device includes at least two portholes disposed in a collar on the periphery of the body of the self-guided flying vehicle.Type: GrantFiled: December 19, 2019Date of Patent: April 12, 2022Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud Davenel, Daniel Marie
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Patent number: 11262166Abstract: An optical radiation-collecting assembly includes a convex mirror, a concave mirror with a central opening and a window, arranged such that light passes through the opening in the concave mirror, is reflected first by the convex mirror and then by the concave mirror, and subsequently passes through the window. The optical assembly is suitable for use in a homing device for guiding a rocket, preventing an optical input component of such a device from being damaged and rendered inoperative from abrasion when exposed to a high-speed air flow containing dense particles. The optical assembly also includes an image-forming function.Type: GrantFiled: October 8, 2019Date of Patent: March 1, 2022Assignee: SAFRAN ELECTRONICS & DEFENSEInventor: Arnaud Davenel
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Publication number: 20220026730Abstract: A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.Type: ApplicationFiled: December 9, 2019Publication date: January 27, 2022Applicant: SAFRAN ELECTRONICS & DEFENSEInventor: Arnaud DAVENEL
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Publication number: 20220018633Abstract: An optical detection device is included in a self-guided flying vehicle, the self-guided flying vehicle being composed of a cone located at the head of the self-guided flying vehicle, a propulsion device located at the rear of the self-guided flying vehicle and a body located between the cone and the propulsion device. The optical detection device includes at least two portholes disposed in a collar on the periphery of the body of the self-guided flying vehicle.Type: ApplicationFiled: December 19, 2019Publication date: January 20, 2022Applicant: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud DAVENEL, Daniel MARIE
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Publication number: 20210356232Abstract: An optical radiation-collecting assembly includes a convex mirror, a concave mirror with a central opening and a window, arranged such that light passes through the opening in the concave mirror, is reflected first by the convex mirror and then by the concave mirror, and subsequently passes through the window. The optical assembly is suitable for use in a homing device for guiding a rocket, preventing an optical input component of such a device from being damaged and rendered inoperative from abrasion when exposed to a high-speed air flow containing dense particles. The optical assembly also includes an image-forming function.Type: ApplicationFiled: October 8, 2019Publication date: November 18, 2021Applicant: SAFRAN ELECTRONICS & DEFENSEInventor: Arnaud Davenel
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Patent number: 11125624Abstract: An infra-red imaging device comprising: a cryostat (4), an infra-red detector (6) arranged inside the cryostat (4) to receive an optical signal coming from outside the imaging device, a linear polarizer configured to polarize the optical signal along a variable direction of polarization, before the optical signal reaches the infra-red detector (6), the linear polarizer comprising: a first polarizing element (22) arranged outside the cryostat (4) and movable in rotation with respect to the cryostat (4), and a second polarizing element (24) arranged inside the cryostat (4) between the first polarizing element (22) and the infra-red detector (6) and fixed with respect to the cryostat (4).Type: GrantFiled: June 26, 2019Date of Patent: September 21, 2021Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud Davenel, Bernard Ruocco-Angari
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Patent number: 11128785Abstract: The invention relates to a proximal monitoring device comprising a ring defining a volume in which a plurality of cameras is mounted. The cameras have fields that are angularly distributed around said ring and at least one of the cameras is associated with a device for scanning azimuthally in a plane normal to a central axis of the ring.Type: GrantFiled: June 14, 2019Date of Patent: September 21, 2021Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud Davenel, Bruno Toulon, Cédric Ollagnier, Sébastien Vial
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Patent number: 11099274Abstract: Device for tracking a target, the device comprising an optical system and a quadrant photodetector, wherein the optical system is configured to project a light beam coming from the target at one spot on at least one of the quadrants, and the photodetector is configured to estimate a current position of the spot by weighting of light energies received by the quadrants. The optical system comprises an optical device configured, when the spot is entirely contained in only one of the quadrants, to enlarge the spot. The invention also relates to a tracking method likely to be implemented by this tracking device.Type: GrantFiled: September 19, 2018Date of Patent: August 24, 2021Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud Davenel, Romain Ferquel
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Publication number: 20210255043Abstract: An infra-red imaging device comprising: a cryostat (4), an infra-red detector (6) arranged inside the cryostat (4) to receive an optical signal coming from outside the imaging device, a linear polarizer configured to polarize the optical signal along a variable direction of polarization, before the optical signal reaches the infra-red detector (6), the linear polarizer comprising: a first polarizing element (22) arranged outside the cryostat (4) and movable in rotation with respect to the cryostat (4), and a second polarizing element (24) arranged inside the cryostat (4) between the first polarizing element (22) and the infra-red detector (6)and fixed with respect to the cryostat (4).Type: ApplicationFiled: June 26, 2019Publication date: August 19, 2021Applicant: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud DAVENEL, Bernard RUOCCO-ANGARI
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Publication number: 20210227105Abstract: The invention relates to a proximal monitoring device comprising a ring defining a volume in which a plurality of cameras is mounted. The cameras have fields that are angularly distributed around said ring and at least one of the cameras is associated with a device for scanning azimuthally in a plane normal to a central axis of the ring.Type: ApplicationFiled: June 14, 2019Publication date: July 22, 2021Inventors: Arnaud DAVENEL, Bruno TOULON, Cédric OLLAGNIER, Sébastien VIAL
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Patent number: 10964047Abstract: The invention concerns a device (1) for locating a target, comprising: —a camera (2) that can be oriented in an orientation in view of the target so that the camera acquires an image of the target, and an orientation in view of a star so that the camera acquires at least one image of the star, —an inertial unit (4) configured to calculate position and orientation data of the camera (2), —a resetting module (6) configured to a apply stellar resetting to the data on the basis of the image of the star, in order to produce reset data, —a location module (8) configured to estimate a position of the target (T) from the image of the target (T) and the reset data, —a communication interface for communicating with an operator station, the camera (2) passing from one orientation to the other in response to the reception, by the interface, of a command sent by the operator station.Type: GrantFiled: December 12, 2017Date of Patent: March 30, 2021Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Emmanuel Robert, Flavien Roland, Arnaud Davenel, Benjamin Deleaux, David Roberfroid, Georges-Olivier Reymond
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Publication number: 20200386891Abstract: Device for tracking a target, the device comprising an optical system and a quadrant photodetector, wherein the optical system is configured to project a light beam coming from the target at one spot on at least one of the quadrants, and the photodetector is configured to estimate a current position of the spot by weighting of light energies received by the quadrants. The optical system comprises an optical device configured, when the spot is entirely contained in only one of the quadrants, to enlarge the spot. The invention also relates to a tracking method likely to be implemented by this tracking device.Type: ApplicationFiled: September 19, 2018Publication date: December 10, 2020Inventors: Arnaud DAVENEL, Romain FERQUEL
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Patent number: 10840390Abstract: A detection and locating device comprising a plurality of optical sensors (Q1, Q2, Q3, Q4) having fields that together define the field of the detection and locating device, each sensor having a plurality of photodiodes having fields that together define the field of the sensor, the sensors being connected to a control unit (10) in such a manner that each sensor supplies a first signal corresponding to the sum of the signals from at least two of the photodiodes.Type: GrantFiled: September 20, 2018Date of Patent: November 17, 2020Assignee: SAFRAN ELECTRONICS & DEFENSEInventors: Arnaud Davenel, Michel Jouffroy, Landry Chopin, Vincent Fraysse
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Publication number: 20200294192Abstract: The invention relates to an image sensor comprising: •an optical system (2a) for receiving an optical signal; •a Bayer matrix (4) located on the image focal plane of the optical system (2a), the Bayer matrix (1) comprising: a reference optical filter (B1) configured to eliminate or attenuate, in the received optical signal, a first band of wavelengths and to allow through, in the received optical signal, a second band length of wavelengths, and also eight optical filters adjacent to the reference optical filter (B1); •a phase mask (2c, 22, 28) arranged on a pupil (2b) of the optical system (2a) and configured to selectively project at least 98% of the energy of the optical signal carried in the first band of wavelengths and 98% of the energy of the optical signal carried in the second band of wavelengths on the reference optical filter (B1) and on at least one adjacent optical filter, which is configured to allow through, in the received optical signal, the first band of wavelengths.Type: ApplicationFiled: September 21, 2018Publication date: September 17, 2020Inventors: Arnaud DAVENEL, Michel JOUFFROY, Corentin DUBOIS, Yannick GUERIN, Eric ROBERT-CHARRERAU
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Publication number: 20200287063Abstract: A detection and locating device comprising a plurality of optical sensors (Q1, Q2, Q3, Q4) having fields that together define the field of the detection and locating device, each sensor having a plurality of photodiodes having fields that together define the field of the sensor, the sensors being connected to a control unit (10) in such a manner that each sensor supplies a first signal corresponding to the sum of the signals from at least two of the photodiodes.Type: ApplicationFiled: September 20, 2018Publication date: September 10, 2020Inventors: Arnaud DAVENEL, Michel JOUFFROY, Landry CHOPIN, Vincent FRAYSSE
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Publication number: 20190385333Abstract: The invention concerns a device (1) for locating a target, comprising: a camera (2) that can be oriented in an orientation in view of the target so that the camera acquires an image of the target, and an orientation in view of a star so that the camera acquires at least one image of the star, an inertial unit (4) configured to calculate position and orientation data of the camera (2), a resetting module (6) configured to a apply stellar resetting to the data on the basis of the image of the star, in order to produce reset data, a location module (8) configured to estimate a position of the target (T) from the image of the target (T) and the reset data, a communication interface for communicating with an operator station, the camera (2) passing from one orientation to the other in response to the reception, by the interface, of a command sent by the operator station.Type: ApplicationFiled: December 12, 2017Publication date: December 19, 2019Inventors: Emmanuel ROBERT, Flavien ROLAND, Arnaud DAVENEL, Benjamin DELEAUX, David ROBERFROID, Georges-Olivier REYMOND
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Patent number: 10481007Abstract: An electromagnetic-radiation detection system is equipped with an electromagnetic-radiation sensor, which has a plurality of detectors sensitive to electromagnetic radiation, allowing images composed of pixels to be obtained, each pixel being represented by at least one value issuing from at least one detector of the sensor. These sensors should generally be cooled. Because of dispersion of the individual responses of each detector of a sensor, each detector of said sensor is calibrated for gain and offset value. A calibration of a detector includes acquiring at least two values issuing from said detector in order to estimate a gain and an offset value to be applied to the values issuing from said detector. A bandpass electromagnetic-radiation filter may have a predefined transmission coefficient in said system in order to vary the electromagnetic radiation reaching said sensor and thus to obtain, for each detector, the two values necessary for implementing calibration.Type: GrantFiled: December 5, 2017Date of Patent: November 19, 2019Assignee: SAFRAN ELECTRONICS & DEFENSEInventor: Arnaud Davenel