公开(公告)号：US12130185B2

公开(公告)日：2024-10-29

申请号：US17406432

申请日：2021-08-19

Applicant: RAYTHEON COMPANY

Inventor： Jehyuk Rhee ,  Henry Lee ,  Matthew C. Thomas

IPC: G01J5/24 ,  G01J5/00 ,  G01J5/20

CPC classification number: G01J5/24 ,  G01J2005/0077 ,  G01J2005/202

Abstract: A trigger sense circuit includes a pseudo-differential comparator circuit in signal communication with a pixel array. The pseudo-differential comparator circuit includes a first input in signal communication with a reference pixel group included in the pixel array to receive a pixel reference voltage, and a second input in signal communication with a target pixel group included in the pixel array to receive a pixel target voltage. The pseudo-differential comparator circuit is configured to selectively operate in a calibration mode to remove false trigger events and a comparison mode to detect at least one overheated pixel included in the target pixel group.

公开(公告)号：US20230056910A1

公开(公告)日：2023-02-23

申请号：US17406432

申请日：2021-08-19

Applicant: RAYTHEON COMPANY

Inventor： Jehyuk Rhee ,  Henry Lee ,  Matthew C. Thomas

IPC: G01J5/24

Abstract: A trigger sense circuit includes a pseudo-differential comparator circuit in signal communication with a pixel array. The pseudo-differential comparator circuit includes a first input in signal communication with a reference pixel group included in the pixel array to receive a pixel reference voltage, and a second input in signal communication with a target pixel group included in the pixel array to receive a pixel target voltage. The pseudo-differential comparator circuit is configured to selectively operate in a calibration mode to remove false trigger events and a comparison mode to detect at least one overheated pixel included in the target pixel group.

公开(公告)号：US12163844B2

公开(公告)日：2024-12-10

申请号：US17523391

申请日：2021-11-10

Applicant: RAYTHEON COMPANY

Inventor： Jehyuk Rhee ,  Matthew C. Thomas ,  Henry Lee

IPC: G01J5/24 ,  G01J5/00 ,  G01J5/04

Abstract: A LADOR circuit is in signal communication with a pixel array. The LADOR circuit is configured to generate an integrator reset voltage based on a resistance of the at least one heated bolometer pixel, and to detect laser energy incident on the at least one heated bolometer pixel based on a comparison between the integrator reset voltage and an input threshold voltage (Vthreshold).

公开(公告)号：US20240288311A1

公开(公告)日：2024-08-29

申请号：US17523391

申请日：2021-11-10

Applicant: RAYTHEON COMPANY

Inventor： Jehyuk Rhee ,  Matthew C. Thomas ,  Henry Lee

IPC: G01J5/24 ,  G01J5/00 ,  G01J5/04

CPC classification number: G01J5/24 ,  G01J5/048 ,  G01J2005/0077

Abstract: A LADOR circuit is in signal communication with a pixel array. The LADOR circuit is configured to generate an integrator reset voltage based on a resistance of the at least one heated bolometer pixel, and to detect laser energy incident on the at least one heated bolometer pixel based on a comparison between the integrator reset voltage and an input threshold voltage (Vthreshold).