Patents by Inventor Yei Wo

Yei Wo 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).

  • Patent number: 11774323
    Abstract: A system, method, and device for simulating an IR signature to test an IR detection device. At least one infrared LED display is provided. Each infrared LED display contains infrared LEDs that emit the desired IR signature. A reflector reflects the IR signature toward the IR detection device. The configuration of the reflector is dependent upon the configuration of the infrared LED display and whether or not some intermediate lens system is used. The IR signature is collimated as it travels to the IR detection device. The IR signature can be collimated by the reflector or by an added lens system. The IR signature fills the field of view associated with the IR detection system. The IR signature comes from a computer-controlled display. As such, the system can simulate various IR signatures and move those IR signatures throughout the field of view of the IR detection system.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: October 3, 2023
    Assignee: DHPC Technologies, Inc.
    Inventor: Yei Wo
  • Patent number: 11735099
    Abstract: A display that can play dynamic video imagery using purely infrared light. Such dynamic video imagery is useful in testing infrared detection equipment. The display contains thousands of solid state infrared LEDs. Different infrared LED types are used. Each type of LED in use emits infrared light in some selected band of the infrared spectrum. The overall display can be designed to simulate infrared signal sources for a particular type of infrared detection system. If a particular infrared detection system detects infrared energy only in a specific range, the infrared LED display can be made to have a high resolution of LEDs within that specific range and a lower resolution of LEDs outside that specific range that would be useful for calibration purposes.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: August 22, 2023
    Assignee: DHPC Technologies, Inc.
    Inventor: Yei Wo
  • Patent number: 10690543
    Abstract: A system, method, and device for evaluating the intensity profile of a laser beam. The laser detection system has a target surface with an interior and an exterior. The target surface and a housing create a target pod with an enclosed interior chamber. A beacon is provided at the target pod to provide for targeting. A camera is provided that images the interior of the target surface from within the enclosed interior chamber. Some percentage of the intensity of the laser beam passes through the target surface uniformly and illuminates the interior of the target surface when the laser beam strikes the target surface. The illumination of and subsequent scattering from the interior of the target surface is imaged by the camera for analysis. By detecting the laser intensity as a function of position, the intensity profile of the laser beam can be quantified.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: June 23, 2020
    Assignee: DHPC Technologies, Inc.
    Inventors: Yei Wo, Bruce P. Boczar, Joseph M. Aletta
  • Patent number: 10613426
    Abstract: A system and method for simulating realistically sized emission signature of a weapon system or weapon platform for the purpose of testing an optical detection device at a long distance in the field. The system utilizes an image screen with a curved imaging surface that is positioned at least one kilometer away from the optical detection device being tested for example. The optical testing device observes the image screen through ambient environmental conditions. A projection device is provided at a first distance from the image screen. The projection device projects a simulation of the emission signature onto the curved imaging surface. The curved imaging surface reflects the simulation toward the optical detection device. A focusing system can be used to adjust the reflection so that the simulation is collimated, converging or dispersing as it progresses toward the optical detection device.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: April 7, 2020
    Assignee: DHPC Technologies, Inc.
    Inventors: Yei Wo, Richard Gifford, Joseph M. Aletta
  • Patent number: 10527920
    Abstract: A system, method, and device for simulating an emission signature, which contains representative intensity, temporal, and spectral emission profiles of a weapon system or weapon platform for the purpose of testing an optical detection device. A projection system optically projects the emission signature. A projection screen is provided that has a concave curvature. The concave curvature possesses a first focal point and a second focal point. Any light emanating from the second focal toward the projection screen is reflected by the projection screen toward the first focal point. The projection system is positioned at the second focal point and the optical detection system is positioned at the first focal point. In this manner, the emission signature projected by the projector system is redirected to the optical detection system.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 7, 2020
    Assignee: DHPC Technologies, Inc.
    Inventors: Yei Wo, Bruce P. Boczar, Richard Gifford, Joseph M. Aletta
  • Patent number: 8139294
    Abstract: Reflectors having concave reflecting surfaces (e.g., parabolic reflectors) and electronically controlled beam steering elements are used for rapid, low-diversion, wide-angle and precision steering of optical beams, including laser beams.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: March 20, 2012
    Assignee: D & S Consulting, Inc.
    Inventors: Yei Wo, Steven A. De Chiaro
  • Publication number: 20120033082
    Abstract: A system and method for detecting and monitoring one or more targets uses surveillance monitors that are selectively aligned in pre-determined directions to form an integrated field of view (IFOV). The IFOV or portions thereof may be illuminated using a scanning laser beam. Information provided by the surveillance monitors is selectively processed in an order determined based on a pre-determined target search and monitoring algorithm. Embodiments are directed to increasing efficiency of detecting or monitoring targets and, in particular, multiple moving targets.
    Type: Application
    Filed: August 6, 2010
    Publication date: February 9, 2012
    Applicant: D & S CONSULTANTS, INC.
    Inventor: Yei Wo
  • Patent number: 8004775
    Abstract: Reflectors having concave reflecting surfaces (e.g., parabolic reflectors) and electronically controlled beam steering elements are used for rapid, low-diversion, wide angle, and precision steering of optical beams, including laser beams.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: August 23, 2011
    Assignee: D&S Consultants, Inc.
    Inventors: Yei Wo, Steven A. De Chiaro
  • Publication number: 20110176228
    Abstract: Reflectors having concave reflecting surfaces (e.g., parabolic reflectors) and electronically controlled beam steering elements are used for rapid, low-diversion, wide angle, and precision steering of optical beams, including laser beams.
    Type: Application
    Filed: June 29, 2010
    Publication date: July 21, 2011
    Applicant: D & S CONSULTANTS, INC.
    Inventors: Yei Wo, Stephen DeChiaro
  • Patent number: 7961407
    Abstract: Reflectors having concave reflecting surfaces (e.g., parabolic reflectors) and electronically controlled beam steering elements are used for rapid, low-diversion, wide-angle, and precision steering of optical beams, including laser beams.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: June 14, 2011
    Assignee: D & S Consultants, Inc.
    Inventors: Yei Wo, Stephen A. DeChiaro
  • Publication number: 20110007407
    Abstract: Reflectors having concave reflecting surfaces (e.g., parabolic reflectors) and electronically controlled beam steering elements are used for rapid, low-diversion, wide-angle and precision steering of optical beams, including laser beams.
    Type: Application
    Filed: June 29, 2010
    Publication date: January 13, 2011
    Applicant: D & S CONSULTANTS, INC.
    Inventors: Yei Wo, Steve DeChiaro
  • Publication number: 20090273850
    Abstract: Reflectors having concave reflecting surfaces (e.g., parabolic reflectors) and electronically controlled beam steering elements are used for rapid, low-diversion, wide-angle, and precision steering of optical beams, including laser beams.
    Type: Application
    Filed: June 9, 2008
    Publication date: November 5, 2009
    Applicant: D&S CONSULTANTS, INC.
    Inventors: Yei Wo, Steve DeChiaro
  • Patent number: 7385768
    Abstract: A system, method and apparatus for rapid, large angle, high-precision steering of one or more beams of light, and in particular, laser beams, using one or more concave reflectors to provide narrow, essentially collimated output beams. The rapid, beam steering device amplifies the angular deflection provided by a small angle steering element by means of one or more concave reflecting surfaces while controlling the divergence of the output beam using a divergence control lens, to produce an essentially collimated output beam in a field of regard that subtends +/?45 degrees on one axis and +/?50 degrees on an orthogonal axis.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: June 10, 2008
    Assignee: D + S Consulting, Inc.
    Inventors: Yei Wo, Steven A. DeChiaro
  • Publication number: 20080112065
    Abstract: A system, method and apparatus for rapid, large angle, high-precision steering of one or more beams of light, and in particular, laser beams, using one or more concave reflectors to provide narrow, essentially collimated output beams. The rapid, beam steering device amplifies the angular deflection provided by a small angle steering element by means of one or more concave reflecting surfaces while controlling the divergence of the output beam using a divergence control lens, to produce an essentially collimated output beam in a field of regard that subtends +/?45 degrees on one axis and +/?50 degrees on an orthogonal axis.
    Type: Application
    Filed: March 29, 2006
    Publication date: May 15, 2008
    Inventors: Yei Wo, Steven A. DeChiaro