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Patent Agency Ranking
公开(公告)号：US20230328340A1
公开(公告)日：2023-10-12
申请号：US18040699
申请日：2021-09-08
Applicant: INSTITUT NATIONAL D'OPTIQUE
Inventor： Michel DOUCET , Alain BERGERON , Francis GENEREUX , Hassane OULACHGAR , Marc TERROUX
CPC classification number: H04N23/13 , G02B27/56 , G02B3/02 , G02B1/11 , G02B7/003 , G01N21/3581 , G02B2003/0093
Abstract: An imaging system that includes an image sensor and imaging optics is provided. The image sensor has a sensing surface and it captures images of a scene. The imaging optics is optically coupled to the image sensor and is configured to form the images of the scene onto the sensing surface of the image sensor. The imaging optics includes a sensor-adjacent optical element having an exit surface located in close proximity to the sensing surface of the image sensor. The exit surface of the sensor-adjacent optical element and the sensing surface of the image sensor are spaced apart by a gap having a gap width enabling evanescent-wave coupling from the exit surface to the sensing surface for light having wavelengths within the sensor spectral range.
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2.发明申请公开(公告)号：US20180241477A1
公开(公告)日：2018-08-23
申请号：US15436017
申请日：2017-02-17
Applicant: INSTITUT NATIONAL D'OPTIQUE
Inventor： Simon TURBIDE , Alain BERGERON
CPC classification number: G01S7/497 , G01S7/486 , G01S17/102 , G01S17/325 , G01S17/895
Abstract: A method is for phase-error correction in a synthetic aperture (SA) imaging system. A transmission signal and a local oscillator (LO) signal are generated with a relative time delay, which can be adjusted in real-time to match a range to a target region to be imaged. A portion of the transmission signal is transmitted onto the target region and a return signal is collected and mixed with a portion of the LO signal to provide a raw SA signal. Transmission and LO phase errors associated respectively with the transmission and LO signals are determined, as well as a frequency jitter between the transmission and LO signals. A phase-corrected SA signal is obtained by applying a phase correction to the raw SA signal based on the transmission phase error, the LO phase error and the frequency jitter. An SA imaging system is capable of implementing the method for phase-error correction.
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公开(公告)号：US20220390590A1
公开(公告)日：2022-12-08
申请号：US17776023
申请日：2020-11-12
Applicant: INSTITUT NATIONAL D'OPTIQUE
Inventor： Linda MARCHESE , Alain BERGERON , Marc TERROUX , Michel DOUCET , François BERTHIAUME , Martin BRIAND , Mélanie LECLERC , Fabien CLAVEAU
Abstract: There is described a terahertz (THz) imaging device and method for imaging an object hidden underneath clothing. The THz imaging device is generally configured for illuminating a region of clothing with a THz illumination beam, collecting a return optical beam reflected from the region of clothing in response to the illumination, generating a THz image based on the collected return optical beam, and tracking a position and orientation of the THz imaging device as the THz image is generated. A plurality of complementary THz images are generated by repeating the steps of illuminating, collecting, generating and tracking for a plurality of points of view of the THz imaging device relative to the clothing. By registering these THz images to one another in a common coordinate system based on the tracked position and orientation, the THz imaging device can output a composite THz image representing the hidden object, if any.
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公开(公告)号：US20210158056A1
公开(公告)日：2021-05-27
申请号：US17100186
申请日：2020-11-20
Applicant: INSTITUT NATIONAL D'OPTIQUE
Inventor： Pierre GALARNEAU , Suzie DUFOUR , LoÏc LE NOC , André FOUGÈRES , Alain BERGERON
Abstract: Methods and systems for crowd surveillance in a public space are provided. The public space has one or more entry points each associated with a corresponding entry zone. Using an entry sensor network, each individual accessing the public space through one of the entry zones is tagged. Each tagged individual is then tracked using the entry sensor network and an interior sensor network. A mood analysis based on data acquired by at least the entry sensor network is performed and includes evaluating at least one physiological or behavioral parameter representative of an emotional state of the individual. A mood-based risk assessment of the individual is then performed based on the mood analysis.
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5.发明申请公开(公告)号：US20170184865A1
公开(公告)日：2017-06-29
申请号：US15390081
申请日：2016-12-23
Applicant: INSTITUT NATIONAL D'OPTIQUE
Inventor： Michel DOUCET , Alain BERGERON , Linda MARCHESE
CPC classification number: G02B27/0927 , G02B5/0221 , G02B5/09 , G02B26/0816 , G02B27/0012 , G02B27/0983 , G02B27/48
Abstract: A beam conditioning device includes a coherence-breaking module and a beam transforming module. The coherence-breaking module is configured to break a spatial coherence between beam components of the light beam and may include coherence-breaking mirrors having a structured pattern on their reflective surfaces. The beam transforming module may include a primary optical element and a secondary optical element and is configured to transform the spatial energy distribution and the footprint of the light beam. The beam conditioning device may be used to transform a Gaussian light beam into a flat-top light beam suitable for terahertz imaging applications, although other initial and/or final energy distributions may be considered.
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