Patents by Inventor Peiyan CAO

Peiyan CAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Portable radiation detector system
    Patent number: 11067708
    Abstract: An apparatus for detecting radiation, comprising: a first radiation absorption layer configured to generate first electrical signals from a photon of the radiation absorbed by the first radiation absorption layer, wherein the first radiation absorption layer comprises a first electrode; an electronic system configured to process the first electrical signals; a counter configured to register a number of photons absorbed by the radiation absorption layer; a controller; the controller is configured to cause the number registered by the counter to increase by one; a power supply; and a communication interface configured for the electronic system to communicate with outside circuitry.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: July 20, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventors: Peiyan Cao, Yurun Liu
  • Methods of making semiconductor X-ray detector
    Patent number: 11063082
    Abstract: Disclosed herein is an apparatus comprising: an X-ray absorption layer; a first electrical contact and a second electrical contact; wherein the first electrical contact and the second electrical contact respectively comprise structures extending into the X-ray absorption layer; wherein the structures of the first electrical contact and the structures of the second electrical contact do not electrically short.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 13, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventors: Peiyan Cao, Yurun Liu
  • IMAGE SENSOR HAVING RADIATION DETECTORS OF DIFFERENT ORIENTATIONS
    Publication number: 20210185203
    Abstract: Disclosed herein is an image sensor comprising: a first radiation detector and a second radiation detector, respectively comprising a planar surface configured to receive radiation from a radiation source; wherein the planar surface of the first radiation detector and the planar surface of the second radiation detector are not parallel; wherein the first radiation detector and the second radiation detector are configured to move to a plurality of positions relative to the radiation source; wherein the image sensor is configured to capture, by using the first radiation detector and the second radiation detector and with the radiation, images of portions of a scene at the positions respectively, and configured to form an image of the scene by stitching the images of the portions.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 17, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • SYSTEMS AND METHODS FOR IMAGING THE THYROID
    Publication number: 20210177367
    Abstract: Disclosed herein is a system comprising: a plurality of X-ray detectors; wherein the X-ray detectors are configured to be positioned at different locations relative to the thyroid of a person, and to capture images of the thyroid with characteristic X-rays of iodine. Each of the X-ray detectors may comprise an array of pixels. The system may further comprise a collimator configured to limit fields of view of the pixels. Disclosed herein is a method comprising: causing emission of characteristic X-rays of iodine inside the thyroid of a person; capturing images of the thyroid with the characteristic X-rays, using a plurality of X-ray detectors positioned at different locations relative to the thyroid; determining a three-dimensional distribution of the iodine in the thyroid based on the images.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 17, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • IMAGING SYSTEM
    Publication number: 20210169434
    Abstract: Disclosed herein is a system comprising: a radiation source; a marker; a first image sensor; and a second image sensor; wherein the first image sensor is configured to capture images of the marker; wherein the second image sensor is configured to move between a first position and a second position; wherein the second image sensor is configured to capture a first set of images of portions of a scene at the first position and to capture a second set of images of portions of the scene at the second position; wherein the second image sensor and the radiation source are configured to collectively rotate relative to the scene; wherein the second image sensor is configured to form an image of the scene by stitching an image selected from the first set and an image selected from the second set based on the images of the marker.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • RADIATION DETECTOR WITH AUTOMATIC EXPOSURE CONTROL AND A METHOD OF AUTOMATIC EXPOSURE CONTROL
    Publication number: 20210169436
    Abstract: Disclosed herein is a method comprising: determining doses of radiation received by a first set of pixels of a radiation detector; determining that the doses satisfy a criterion; adjusting exposure of the radiation detector to the radiation in response to the doses satisfying the criterion; and forming an image based on radiation received by a second set of pixels of the radiation detector.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 10, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • METHODS AND SYSTEMS FOR FORMING IMAGES WITH RADIATION
    Publication number: 20210173102
    Abstract: Disclosed herein is a method comprising: obtaining a signal at a pixel in an array of pixels of a radiation detector, wherein the signal is generated from radiation incident on the radiation detector; obtaining a corrected signal by correcting the signal with a combination of a set of reference signals generated from the radiation at a set of reference pixels in the array, wherein a set of weights are respectively applied to the set of reference signals in the combination; and forming an image based on the corrected signal; wherein the set of weights is a function of a location of the pixel with respect to the array.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • IMAGING METHOD
    Publication number: 20210172887
    Abstract: Disclosed herein is method comprising: while an image sensor is at a first position relative to a radiation source, capturing a first set of images of portions of a scene respectively when the image sensor and the radiation source are collectively rotated relative to the scene about a first axis to a plurality of rotational positions; while the image sensor is at a second position relative to the radiation source, capturing a second set of images of portions of the scene respectively when the image sensor and the radiation source are collectively rotated relative to the scene about the first axis to the plurality of rotational positions; and forming an image of the scene by stitching an image of the first set and an image of the second set.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • APPARATUS AND METHOD FOR IMAGING AN OBJECT USING RADIATION
    Publication number: 20210169430
    Abstract: Disclosed herein an apparatus comprising: a radiation source configured to produce a beam of radiation toward an object; an image sensor comprising a plurality of radiation detectors spaced apart from one another. The image sensor is configured to move between a first position and a second position, relative to the object. The radiation source is configured to move along a path relative to the object.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • RADIATION DETECTOR WITH SUBPIXELS OPERATING IN DIFFERENT MODES
    Publication number: 20210173104
    Abstract: Disclosed herein is a radiation detector, comprising a pixel comprising a plurality of subpixels. Each of the subpixels configured to generate an electrical signal upon exposure to a radiation. The detector further comprises a switch electrically connected to the plurality of subpixels. The switch is configured to combine electrical signals generated by a subset of the subpixels. Disclosed also herein is a method in relation to the radiation detector.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 10, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • Radiation detector suitable for a pulsed radiation source
    Patent number: 11029419
    Abstract: Disclosed herein is a radiation detector, comprising: a plurality of pixels, and a controller; wherein each pixel is configured to detect radiation emitted from a pulsed radiation source; wherein the pulsed radiation source is configured to emit radiation during a plurality of ON periods and configured not to emit radiation during a plurality of OFF periods; wherein the controller is configured to determine that the pulsed radiation source is at one of the ON periods or at one of the OFF periods; wherein the controller is configured to cause the pixels to integrate signals or not to integrate signals with determination that the radiation source is at one of the ON periods or at one of the OFF periods.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 8, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventors: Peiyan Cao, Yurun Liu
  • X-ray detectors of high spatial resolution
    Patent number: 11029424
    Abstract: An apparatus, system and method suitable for detecting X-ray are disclosed. In one example, the apparatus comprises: an X-ray absorption layer and a mask; wherein the mask comprises a first window and a second window, and a portion between the first window and the second window; wherein the first and second windows are not opaque to an incident X-ray; wherein the portion is opaque to the incident X-ray; and wherein the first and second windows are arranged such that charge carriers generated in the X-ray absorption layer by an X-ray photon propagating through the first window and charge carriers generated in the X-ray absorption layer by an X-ray photon propagating through the second window do not spatially overlap.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: June 8, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventors: Peiyan Cao, Yurun Liu
  • Dark noise compensation in a radiation detector
    Patent number: 11032500
    Abstract: Disclosed herein is a radiation detector, comprising: pixels arranged in an array, the pixels comprising peripheral pixels at a periphery of the array and interior pixels at an interior of the array, each of the pixels configured to generate an electrical signal on an electrode thereof, upon exposure to a radiation; an electronic system configured to provide first compensation to the peripheral pixels for a dark noise of the peripheral pixels and to provide second compensation to the interior pixels for a dark noise of the interior pixels, the first compensation and the second compensation being different.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: June 8, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventor: Peiyan Cao
  • Detector for X-ray fluorescence
    Patent number: 11029426
    Abstract: Disclosed herein is a detector, comprising: a plurality of pixels, each pixel configured to count numbers of X-ray photons incident thereon whose energy falls in a plurality of bins, within a period of time; an X-ray absorption layer; wherein the X-ray absorption layer comprises an electrical contact within each of the pixels, and a focusing electrode surrounding the electrical contact and configured to direct to the electrical contact charge carriers generated by an X-ray photon incident within confines of the focusing electrodes; and wherein the detector is configured to add the numbers of X-ray photons for the bins of the same energy range counted by all the pixels.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: June 8, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventors: Peiyan Cao, Yurun Liu
  • RADIATION DETECTOR
    Publication number: 20210161488
    Abstract: Disclosed herein is a detector, comprising: a pixel comprising a first subpixel and a second subpixel, wherein the first subpixel is configured to generate a first electrical signal upon exposure to radiation, and wherein the second subpixel is configured to generate a second electrical signal upon exposure to the radiation; wherein the detector is configured to determine a number of particles of the radiation incident on the first subpixel over a first period of time, based on the first electrical signal; wherein the detector is configured to determine an intensity of the radiation by integrating the second electrical signal over a second period of time.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • RADIATION DETECTION APPARATUS
    Publication number: 20210161499
    Abstract: Disclosed herein is an apparatus, comprising: a platform configured to support a human body on a first surface of the platform; a first set of radiation detectors arranged in a first layer, wherein the radiation detectors of the first set are attached to a second surface of the platform opposite the first surface; wherein the radiation detectors of the first set are configured to detect radiation from a radiation source inside the human body.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • ULTRAVIOLET LIGHT IMAGE SENSOR
    Publication number: 20210167102
    Abstract: Disclosed herein is an apparatus, comprising: an array of avalanche photodiodes (APDs) configured to detect UV light; a bandpass optical filter that blocks visible light and passes UV light incident on the array of APDs.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • X-Ray Detectors Capable of Identifying and Managing Charge Sharing
    Publication number: 20210165116
    Abstract: An apparatus suitable for detecting X-ray is disclosed. In one example, the apparatus comprises an X-ray absorption layer and a controller. The X-ray absorption layer comprises a first pixel and a second pixel. The controller is configured for determining whether all carriers generated in the X-ray absorption layer by an X-ray photon are collected by the first pixel and the second pixel, and determining the energy of the X-ray photon based on a sum of a first portion of the carriers that is collected by the first pixel and a second portion of the carriers that is collected by the second pixel.
    Type: Application
    Filed: February 15, 2021
    Publication date: June 3, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • SYSTEMS AND METHODS OF CONTROLLING ELECTROPLATING
    Publication number: 20210164121
    Abstract: Disclosed herein is a system, comprising: a detector configured to determine a number of photons of one or more characteristic X-rays emitted by a chemical element in the electrolyte and received by the detector, within a period of time; a processor configured to determine a concentration of the chemical element in the electrolyte based on the number; a controller configured to replenish the chemical element into the electrolyte or configured to stop electroplating with the electrolyte, based on the concentration.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Inventors: Peiyan CAO, Yurun LIU
  • Packaging methods of semiconductor x-ray detectors
    Patent number: 11018180
    Abstract: Disclosed herein are various methods for making apparatuses suitable for detecting X-ray. The method may comprise bonding a plurality of chips to a first substrate, wherein the first substrate comprises a plurality of electric contacts and a plurality of vias connecting the electric contacts to a surface of the first substrate, wherein each of the chips comprises an X-ray absorption layer comprising a first electrode and a second electrode, and wherein the plurality of chips are bonded to the first substrate such that the second electrode of each of the chips is electrically connected to at least one of the electrical contacts.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: May 25, 2021
    Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.
    Inventors: Peiyan Cao, Yurun Liu