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Patent Agency Ranking
公开(公告)号：US11940322B2
公开(公告)日：2024-03-26
申请号：US17627573
申请日：2020-07-15
Applicant: THALES
Inventor： Paul Thibout , Thierry Midavaine , Guillaume Bloom , Yves Courcol , Olivier Verdy
CPC classification number: G01J1/4257 , G01J1/0433
Abstract: The present invention relates to a device for classifying a light source, comprising:
a sensor adapted to receive a luminous flux emitted by a light source, the sensor comprising a plurality of pixels grouped in sets, each set comprising a first pixel and a second pixel adjacent to the first pixel,
each first pixel being adapted to generate a first signal relating to a first portion of luminous flux in a first spectral band received by said first pixel,
each second pixel being adapted to generate a second signal relating to a second portion of luminous flux in a second spectral band received by said second pixel,
a computer configured to compare the first and second signals and to classify the emitting light source according to the result of the comparison.-
公开(公告)号：US11221468B2
公开(公告)日：2022-01-11
申请号：US15104933
申请日：2014-12-04
Applicant: THALES
Inventor： Catherine Antier , Thierry Midavaine
Abstract: An imaging module includes a single-pupil head component with hyper-hemispherical entrance field with refractive entrance surface, concave exit face, a refractive central zone and reflective peripheral zone. The imaging module also includes a secondary mirror, an aberrations corrector having an aspherical lens, a focusing objective, and an aperture diaphragm between the aberrations corrector and the objective. The head component is quasi-afocal in the vicinity of the field of 90° angular radius, its entrance surface has a ½ vertex angle of smaller than 30°, the secondary mirror is aspherical with variable local focal length with a maximum local power for a zone used by a field of 90° angular radius and minimum smaller by at least a factor of 2 for a zone used by a field of angular radius smaller than 20°.
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公开(公告)号：US09712762B2
公开(公告)日：2017-07-18
申请号：US14654266
申请日：2013-12-17
Applicant: THALES
Inventor： Thierry Midavaine
Abstract: A method is provided for detecting a target not emitting in the wavelength region lying between 1 μm and 1.9 μm. The target is situated in a night sky luminous environment of level less than or equal to 4. Use is made of an imaging device of focal length f and of pupil diameter D, comprising at least one detector comprising types of pixels configured to operate in the wavelength region lying between 1 μm and 1.9 μm, the detectors exhibiting a noise level of less than 0.6×1015/(f/D)2, and from the image obtained by this device is extracted at least one negative-contrast zone, that is to say a black zone on a bright background corresponding to the presence of the target in the night sky of level less than or equal to 4.
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公开(公告)号：US11686612B2
公开(公告)日：2023-06-27
申请号：US17627435
申请日：2020-07-13
Applicant: THALES
Inventor： Ludovic Perruchot , Thierry Midavaine , Guillaume Bloom , Jérôme Achart , Marc Thillot , Tugdual Perrot , Vincent Ligeret
CPC classification number: G01J1/42 , G01J2001/4238 , G01J2001/446
Abstract: The present invention relates to an optical pulse detection device, the device comprising a sensor having a plurality of pixels, each pixel comprising:
a receiver configured to receive optical pulses and generate an electrical signal,
an event detection unit comprising a frequency filter having an adjustable cut-off frequency defining a passband for the event detection unit, the adjustable cut-off frequency being such that the upper bound of the passband is greater than or equal to 1 Megahertz, the detection unit being configured to detect variations in the electrical signal generated by the receiver only when the frequency in the frequency domain of said variations is within the passband of the event detection unit, and
a timing unit configured to date each change in the electrical signal detected by the event detection unit.-
5.发明授权公开(公告)号：US09953226B2
公开(公告)日：2018-04-24
申请号：US15110937
申请日：2015-02-05
Applicant: THALES
Inventor： Thierry Midavaine , Olivier Garin
IPC: G06K9/00 , G01J1/02 , G01J5/00 , G01J5/02 , G01J5/60 , F41G3/14 , G01J1/04 , G01J1/42 , G06T7/73
CPC classification number: G06K9/00771 , F41G3/147 , G01J1/0219 , G01J1/0242 , G01J1/0488 , G01J1/4228 , G01J5/0066 , G01J5/025 , G01J5/0275 , G01J5/602 , G01J2005/0077 , G06K9/00624 , G06T7/74 , G06T2207/10048 , G06T2207/30212 , G06T2207/30232
Abstract: The subject of the invention is a method for detecting and classifying events of a scene by means of a single-pupil imaging system equipped with a VisNIR detector in the 0.6 μm-1.1 μm band and with an SWIR detector, which comprises steps of acquiring synchronized VisNIR and SWIR successive 2D images, of displaying the VisNIR images, and of processing these images, which consists in: comparing the SWIR images so as to determine, for each pixel, the variation in illumination from one SWIR image to another and the peak value of these SWIR illuminations, if this variation in SWIR illumination is greater than a threshold, then an event associated with said pixel is detected and: its date, its temporal shape and its duration are determined, in the VisNIR images, the coordinates are determined of the corresponding pixel for which: the variation in the illumination from one VisNIR image to another and the peak value of these VisNIR illuminations are calculated, and these variations in SWIR and VisNIR illumination and their peak values are compared so as to estimate a temperature of the event, the distance of the corresponding point of the scene is estimated so as to calculate the intensity of the event on the basis of the SWIR and VisNIR illuminations and on the basis of this distance, the total energy of the event is estimated on the basis of its temporal shape and of its intensity, the event is classified as a function of its duration, its temperature, its intensity and its energy, the previous steps are repeated for another pixel of the SWIR images.
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