公开(公告)号：US10042049B2

公开(公告)日：2018-08-07

申请号：US14928194

申请日：2015-10-30

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Alain Bergeron ,  Linda Marchese

IPC: G01S13/90 ,  G01S7/40 ,  G01S15/89 ,  G01S17/89 ,  G06T5/50 ,  G02B27/58 ,  G03H1/04

Abstract: There is described a method for processing data generated by a synthetic aperture imaging system, comprising: receiving raw data representative of electromagnetic signals reflected by a target area to be imaged; receiving a parameter change for the synthetic aperture imaging system; digitally correcting the raw data in accordance with the parameter change, thereby compensating for the parameter change in order to obtain corrected data; and generating an image of the target area using the corrected data.

公开(公告)号：US20180113208A1

公开(公告)日：2018-04-26

申请号：US14928194

申请日：2015-10-30

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Alain Bergeron ,  Linda Marchese

IPC: G01S13/90 ,  G01S7/40 ,  G01S17/89 ,  G03H1/04 ,  G06T5/50 ,  G02B27/58

CPC classification number: G01S13/9035 ,  G01S7/4004 ,  G01S13/9005 ,  G01S15/8997 ,  G01S17/895 ,  G02B27/58 ,  G03H2001/046 ,  G06T5/50

Abstract: There is described a method for processing data generated by a synthetic aperture imaging system, comprising: receiving raw data representative of electromagnetic signals reflected by a target area to be imaged; receiving a parameter change for the synthetic aperture imaging system; digitally correcting the raw data in accordance with the parameter change, thereby compensating for the parameter change in order to obtain corrected data; and generating an image of the target area using the corrected data.

公开(公告)号：US20180113207A1

公开(公告)日：2018-04-26

申请号：US14927776

申请日：2015-10-30

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Alain Bergeron ,  Linda Marchese

IPC: G01S13/90 ,  G01S7/40 ,  G01S17/89 ,  G03H1/04 ,  G06T5/50 ,  G02B27/58

CPC classification number: G01S13/9035 ,  G01S7/4004 ,  G01S13/9005 ,  G01S15/8997 ,  G01S17/895 ,  G02B27/58 ,  G03H2001/046 ,  G06T5/50

Abstract: There is described a method for processing data generated by a synthetic aperture imaging system, comprising: receiving raw data representative of electromagnetic signals reflected by a target area to be imaged; receiving a parameter change for the synthetic aperture imaging system; digitally correcting the raw data in accordance with the parameter change, thereby compensating for the parameter change in order to obtain corrected data; and generating an image of the target area using the corrected data.

公开(公告)号：US10042172B2

公开(公告)日：2018-08-07

申请号：US15390081

申请日：2016-12-23

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Michel Doucet ,  Alain Bergeron ,  Linda Marchese

IPC: G02B26/08 ,  G02B27/09 ,  G02B5/09 ,  G02B27/00

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.

公开(公告)号：US11368637B1

公开(公告)日：2022-06-21

申请号：US17177891

申请日：2021-02-17

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Bruno Tremblay ,  Alain Bergeron

IPC: H04N5/33 ,  G01J5/00 ,  H04N5/378

Abstract: A method and system for imaging a target scene using a microbolometer array having multiple lines of microbolometer pixels are disclosed. Each line is switchable between an exposed state and a shielded state, where the line is exposed to the target scene and a reference scene, respectively. The method may include alternating between generating a target frame of the target scene and generating a reference frame of the reference scene, each of which in a rolling shutter mode. The method may also include, concurrently with the generating steps, alternating between sequentially shielding each line after its readout in the exposed state for its next readout in the shielded state, and sequentially exposing each line after its readout in the shielded state for its next readout in the exposed state. The method may also include adjusting the target frames using the reference frames to generate thermal images of the target scene.

公开(公告)号：US12256133B2

公开(公告)日：2025-03-18

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

IPC: H04N23/13 ,  G01N21/3581 ,  G02B1/11 ,  G02B3/02 ,  G02B7/00 ,  G02B27/56 ,  G02B3/00

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.

公开(公告)号：US10564268B2

公开(公告)日：2020-02-18

申请号：US15436017

申请日：2017-02-17

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Simon Turbide ,  Alain Bergeron

IPC: G01S7/00 ,  G01S7/497 ,  G01S17/89 ,  G01S17/10 ,  G01S7/486 ,  G01S17/32

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.

公开(公告)号：US10175351B2

公开(公告)日：2019-01-08

申请号：US14927776

申请日：2015-10-30

Applicant: INSTITUT NATIONAL D'OPTIQUE

Inventor： Alain Bergeron ,  Linda Marchese

IPC: G01S13/90 ,  G01S7/40 ,  G01S15/89 ,  G02B27/58 ,  G06T5/50 ,  G03H1/04 ,  G01S17/89

Abstract: There is described a method for processing data generated by a synthetic aperture imaging system, comprising: receiving raw data representative of electromagnetic signals reflected by a target area to be imaged; receiving a parameter change for the synthetic aperture imaging system; digitally correcting the raw data in accordance with the parameter change, thereby compensating for the parameter change in order to obtain corrected data; and generating an image of the target area using the corrected data.