公开(公告)号：US11178332B2

公开(公告)日：2021-11-16

申请号：US15863111

申请日：2018-01-05

Applicant: Sensors Unlimited, Inc.

Inventor： Joshua Lund

IPC: H04N5/232 ,  F41G3/32 ,  F41G3/06 ,  G06T7/80 ,  H04N5/33 ,  H04N5/225 ,  G06T3/40 ,  G01S17/08 ,  G01S7/51 ,  G01S7/497

Abstract: A method of digitally boresighting includes finding a laser spot in a field of view of an imaging device that has an optical center, wherein the laser spot is generated by a laser, determining an offset vector between the laser spot in the field of view and the optical center, and correcting for boresight misalignment of the laser and imaging device in the image on a display using the offset vector.

公开(公告)号：US10955551B2

公开(公告)日：2021-03-23

申请号：US15785069

申请日：2017-10-16

Applicant: Sensors Unlimited, Inc.

Inventor： John Liobe ,  Joshua Lund

IPC: G01C3/08 ,  G01S17/08 ,  G01S7/481 ,  G01S7/4863 ,  G01S17/10

Abstract: A pixel output processing circuit of a focal plane array (FPA) having a plurality of laser range finding pixels (LRF) is provided. The respective LRF pixels output a high frequency analog signal in response to sensing a reflected laser pulse. The pixel output processing circuit includes a common net and a detection circuit. The common net is connected to a amplifying transistor of each of the LRF pixels for receiving analog signals output from the respective LRF pixels. The detection circuit is coupled to the common net and outputs a pulse flag in response to detecting that a high frequency analog signal has been received by the common net.

公开(公告)号：US20200227370A1

公开(公告)日：2020-07-16

申请号：US16838322

申请日：2020-04-02

Applicant: Sensors Unlimited, Inc.

Inventor： Wei Zhang ,  Wei Huang ,  Joshua Lund ,  Namwoong Paik

IPC: H01L23/00 ,  H01L21/48 ,  H01L23/13 ,  H01L27/146 ,  H01L23/498

Abstract: A method of forming bump structures for interconnecting components includes applying an insulating layer over a device substrate, coating the insulating layer with a dielectric material layer, forming a pattern with photolithography on the dielectric material layer, etching the dielectric material layer to transfer the pattern to the insulating layer, etching the insulating layer to form pockets in the insulating layer following the pattern, applying photolithography to and etching the dielectric material layer to reduce overhang of the dielectric material layer relative to the insulating layer, removing material from top and side walls of the pockets in the insulating layer, and depositing electrically conductive bump material in the pattern so a respective bump is formed in each pocket.

公开(公告)号：US20190296058A1

公开(公告)日：2019-09-26

申请号：US15935080

申请日：2018-03-26

Applicant: Sensors Unlimited, Inc.

Inventor： Wei Huang ,  Wei Zhang ,  Joshua Lund ,  Namwoong Paik

IPC: H01L27/144 ,  H01L31/109 ,  H01L31/0304 ,  H01L31/0216 ,  H01L31/18 ,  H01L31/0352

Abstract: A photodiode includes an absorption layer. A cap layer is disposed on a surface of the absorption layer. A pixel diffusion area within the cap layer extends beyond the surface of the absorption layer and into the absorption layer to receive a charge generated from photons therefrom. A mesa trench is defined through the cap layer surrounding the pixel diffusion area, wherein the mesa trench defines a floor at the surface of the absorption layer and opposed sidewalls extending away from the surface of the absorption layer. An implant is aligned with the mesa trench and extends from the floor of the mesa trench through the absorption layer surrounding a portion of the absorption layer proximate the pixel diffusion area.

公开(公告)号：US10267902B2

公开(公告)日：2019-04-23

申请号：US15425760

申请日：2017-02-06

Applicant: Sensors Unlimited, Inc.

Inventor： John Liobe ,  Joshua Lund

IPC: H01L27/00 ,  G01S7/486 ,  G01S7/48 ,  G01S7/487 ,  G01J1/42

Abstract: A method includes acquiring a pulse detection bitmap from an imaging sensor array into a digital read out integrated circuit (DROIC), filtering the pulse detection bitmap within the DROIC to convert the pulse detection bitmap into a filtered pulse detection bitmap, and determining for a given pixel in the filtered pulse detection bitmap whether the pixel has a value that exceeds a threshold, indicating a true laser pulse return has been detected in the pixel.

公开(公告)号：US20180259296A1

公开(公告)日：2018-09-13

申请号：US15457464

申请日：2017-03-13

Applicant: Sensors Unlimited, Inc.

Inventor： Joshua Lund ,  Jonathan Nazemi ,  John Liobe

IPC: F41G1/36 ,  F41G1/35 ,  G01J5/10

CPC classification number: F41G1/36 ,  F41G3/165 ,  G01J1/0219 ,  G01J1/4228 ,  G01J5/025 ,  G01J5/0896 ,  G01J5/10 ,  G01J2005/0077 ,  G01J2005/106 ,  G01S17/026 ,  G01S17/89

Abstract: A method of threat detection includes illuminating a scene with short-wavelength infrared (SWIR) illumination and receiving a return of the SWIR illumination reflected back from the scene. The method includes analyzing the return of the SWIR illumination to detect presence of man-made optics in the scene. Illuminating, receiving, and analyzing can be performed by a device, e.g., a rifle-mounted laser device.

公开(公告)号：US10177183B2

公开(公告)日：2019-01-08

申请号：US15259479

申请日：2016-09-08

Applicant: Sensors Unlimited, Inc.

Inventor： Joshua Lund

IPC: H01L27/146 ,  G06T1/00 ,  H04N1/32 ,  H04N5/369

Abstract: An imaging sensor includes an imaging array with a plurality of pixels. A sub-set of the pixels are marker pixels configured to each provide a constant respective output value to embed an orientation and alignment marker in images produced with the imaging array. The marker pixels can be sparsely distributed across the imaging array.

公开(公告)号：US10175030B2

公开(公告)日：2019-01-08

申请号：US15457464

申请日：2017-03-13

Applicant: Sensors Unlimited, Inc.

Inventor： Joshua Lund ,  Jonathan Nazemi ,  John Liobe

IPC: F41C9/00 ,  F41G1/36 ,  F41G1/35 ,  G01J5/10

Abstract: A method of threat detection includes illuminating a scene with short-wavelength infrared (SWIR) illumination and receiving a return of the SWIR illumination reflected back from the scene. The method includes analyzing the return of the SWIR illumination to detect presence of man-made optics in the scene. Illuminating, receiving, and analyzing can be performed by a device, e.g., a rifle-mounted laser device.

公开(公告)号：US10097775B2

公开(公告)日：2018-10-09

申请号：US15266134

申请日：2016-09-15

Applicant: Sensors Unlimited, Inc.

Inventor： Joshua Lund

IPC: H04N5/33 ,  H04N5/347 ,  H04N5/378

Abstract: An imaging system includes a readout integrated circuit (ROIC) is operatively connected to receive photocurrent from a plurality of photodetectors (e.g., from a plurality of photodetectors of a photodetector array (PDA)). An event detection circuit in each ROIC pixel readout circuit generates binary output data, wherein the ROIC compresses the binary output data with a logical summary binning of N×M pixel binary outputs into a single summary output bit. The ROIC can be configured to receive image data from the photodetectors to form an image at a first frame rate, and to receive the binned binary data from the photodetectors at a second frame rate higher than the first frame rate.

公开(公告)号：US20180227508A1

公开(公告)日：2018-08-09

申请号：US15426521

申请日：2017-02-07

Applicant: Sensors Unlimited, Inc.

Inventor： Joshua Lund ,  John Liobe

IPC: H04N5/33 ,  H01L27/146 ,  H04N5/225 ,  H04N13/02

CPC classification number: H04N5/33 ,  G01S7/4863 ,  G01S7/487 ,  G01S17/89 ,  H01L27/14612 ,  H01L27/1463 ,  H01L27/14649 ,  H04N5/2256 ,  H04N5/369 ,  H04N5/3696 ,  H04N5/3745 ,  H04N13/214

Abstract: An imaging pixel includes a photodetector for generating a charge signal, an input buffer, a control device, and a switch. The input buffer is connected to the photodetector for amplifying the charge signal. The control device is connected to the photodetector and the input buffer to separate high-frequency charge signals from low frequency charge signals. The switch is operably connected to the input buffer for sampling of high-frequency charge signals in a charge storage device triggered by amplitude of high-frequency charge signals provided by the input buffer.