公开(公告)号：US20200025679A1

公开(公告)日：2020-01-23

申请号：US16586809

申请日：2019-09-27

Applicant: FLIR Systems AB

Inventor： Hakan E. Nygren ,  Jonas Sandsten ,  Per Lilja ,  Marta Barenthin-Syberg ,  Henning Hagman ,  Eric A. Kurth ,  Brian B. Simolon ,  Naseem Y. Aziz ,  Ulf Wallgren

IPC: G01N21/3504 ,  H04N5/33

Abstract: An IR imaging device includes an optical element receiving infrared radiation from a scene, a filter blocking IR radiation outside of a particular range of wavelengths, an array of sensor pixels to capture an image of the scene based on infrared radiation received through the optical element and filter, the array of sensor pixels comprising a first array of sensor pixels to image gas in within a first spectral bandwidth, and a second array of sensor pixel to sense IR radiation in a second spectral bandwidth where gas is not detected, a read-out integrated circuit (ROIC) and logic circuitry to generate a first image sensed by the first array and a second image sensed by the second array, and gas detection logic to detect the presence of gas in the first image.

公开(公告)号：US20240319013A1

公开(公告)日：2024-09-26

申请号：US18731082

申请日：2024-05-31

Applicant: FLIR Systems AB

Inventor： Henning Hagman ,  Per Lilja

IPC: G01J5/02 ,  G01J5/00 ,  G01J5/06

CPC classification number: G01J5/025 ,  G01J5/064 ,  G01J2005/0077 ,  G01J2005/066

Abstract: Techniques are provided for facilitating detection threshold determination for infrared imaging systems and methods. In one example, a method includes capturing, by an imaging device, a thermal image of a scene. The method further includes determining temperature difference data indicative of a difference between temperature data of the thermal image associated with a background of the scene and temperature data of the thermal image associated with gas detection. The method further includes determining detection threshold data based on sensitivity characteristics associated with the imaging device and the temperature difference data. The method further includes generating a detection threshold image based on the detection threshold data. Each pixel of the detection threshold image corresponds to a respective pixel of the thermal image and has a value indicative of a detection threshold associated with the respective pixel of the thermal image. Related devices and systems are also provided.

公开(公告)号：US11635370B2

公开(公告)日：2023-04-25

申请号：US16586809

申请日：2019-09-27

Applicant: FLIR Systems AB

Inventor： Hakan E. Nygren ,  Jonas Sandsten ,  Per Lilja ,  Marta Barenthin-Syberg ,  Henning Hagman ,  Eric A. Kurth ,  Brian B. Simolon ,  Naseem Y. Aziz ,  Ulf Wallgren

IPC: G01N21/3504 ,  H04N5/33 ,  G06T5/50

Abstract: An IR imaging device includes an optical element receiving infrared radiation from a scene, a filter blocking IR radiation outside of a particular range of wavelengths, an array of sensor pixels to capture an image of the scene based on infrared radiation received through the optical element and filter, the array of sensor pixels comprising a first array of sensor pixels to image gas in within a first spectral bandwidth, and a second array of sensor pixel to sense IR radiation in a second spectral bandwidth where gas is not detected, a read-out integrated circuit (ROIC) and logic circuitry to generate a first image sensed by the first array and a second image sensed by the second array, and gas detection logic to detect the presence of gas in the first image.

公开(公告)号：US20230366812A1

公开(公告)日：2023-11-16

申请号：US18306122

申请日：2023-04-24

Applicant: FLIR Systems AB

Inventor： Hakan E. Nygren ,  Jonas Sandsten ,  Per Lilja ,  Marta Barenthin-Syberg ,  Henning Hagman ,  Eric A. Kurth ,  Brian B. Simolon ,  Naseem Y. Aziz ,  Ulf Wallgren

IPC: G01N21/3504 ,  H04N5/33

CPC classification number: G01N21/3504 ,  H04N5/33 ,  G06T5/50

Abstract: An IR imaging device includes an optical element receiving infrared radiation from a scene, a filter blocking IR radiation outside of a particular range of wavelengths, an array of sensor pixels to capture an image of the scene based on infrared radiation received through the optical element and filter, the array of sensor pixels comprising a first array of sensor pixels to image gas in within a first spectral bandwidth, and a second array of sensor pixel to sense IR radiation in a second spectral bandwidth where gas is not detected, a read-out integrated circuit (ROIC) and logic circuitry to generate a first image sensed by the first array and a second image sensed by the second array, and gas detection logic to detect the presence of gas in the first image.

公开(公告)号：US11200697B2

公开(公告)日：2021-12-14

申请号：US16711149

申请日：2019-12-11

Applicant: FLIR Systems AB

Inventor： Jonas Sandsten ,  Per Lilja ,  Henning Hagman ,  Marta Barenthin-Syberg ,  Tien Nguyen

IPC: G06T7/80 ,  G01J5/24 ,  H04N5/33 ,  H04N17/00 ,  G01J5/20 ,  G01J5/00

Abstract: An ambient temperature calibration process includes, in accordance with an embodiment, determining an ambient temperature calibration value for a global external resistance associated with a read out integrated circuit (ROIC) of an image capture component comprising a sensor array comprising a focal plane array of microbolometers arranged on the ROIC; determining an ambient temperature calibration value for a sensor integration time associated with the ROIC; and determining an ambient temperature calibration mapping for an offset mapping associated with the ROIC.