Patents by Inventor Minh Chau Ngo

Minh Chau Ngo 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).

  • Five axis optical inspection system
    Patent number: 9939624
    Abstract: An inspection system that is effective to collect images of a part under inspection. This inspection system includes (a) a three axis linear motion stage; (b) a rotary fourth axis stage configured to hold and rotate an object to be inspected. This rotary fourth axis stage is mounted on the three axis linear stage; (c) a fifth axis camera and optical system mounted to one of the axes of the three axis linear motion stage. This fifth axis camera has an optical axis substantially parallel to the axis of linear motion; (d) a 45 degree mirror configured to bend the optical axis of the fifth axis camera by 90° to point towards the object; and (e) a motor configured to rotate the mirror over a range of angles to obtain a fifth axis of viewing orientation.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: April 10, 2018
    Assignee: Electro Scienctific Industries, Inc.
    Inventors: Daniel Freifeld, John Burnett, Minh Chau Ngo
  • Five Axis Optical Inspection System
    Publication number: 20150323773
    Abstract: An inspection system that is effective to collect images of a part under inspection. This inspection system includes (a) a three axis linear motion stage; (b) a rotary fourth axis stage configured to hold and rotate an object to be inspected. This rotary fourth axis stage is mounted on the three axis linear stage; (c) a fifth axis camera and optical system mounted to one of the axes of the three axis linear motion stage. This fifth axis camera has an optical axis substantially parallel to the axis of linear motion; (d) a 45 degree mirror configured to bend the optical axis of the fifth axis camera by 90° to point towards the object; and (e) a motor configured to rotate the mirror over a range of angles to obtain a fifth axis of viewing orientation.
    Type: Application
    Filed: May 6, 2015
    Publication date: November 12, 2015
    Applicant: Visicon Technologies, Inc.
    Inventors: Daniel Freifeld, John Burnett, Minh Chau Ngo