Patents by Inventor Jiangang Xia

Jiangang Xia 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).

  • Side-illuminated target structure having uniform ring illumination
    Patent number: 6802131
    Abstract: An illuminated target structure for viewing a scene includes a transparent medium having a transparent-medium peripheral rim and a light-reflective target within a transparent-medium central region. A circumferentially uniform ring illumination source is in contact with the transparent-medium peripheral rim. The ring illumination source projects a substantially uniform illumination into the transparent-medium peripheral rim and thence onto the light-reflective target. The ring illumination source preferably is a modified optical fiber structure having a modified lateral surface in facing relation to the transparent-medium peripheral rim and having a light leakage through the modified lateral surface. An image intensifier may be positioned in facing relation to a transparent-medium front face.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: October 12, 2004
    Assignee: Raytheon Company
    Inventors: Robert Scholz, Jiangang Xia