Patents by Inventor James Francis Hallas

James Francis Hallas 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).

  • Spatial light modulator image display projector apparatus with solid state illumination light sources
    Patent number: 11320728
    Abstract: In described examples, a projector includes a light source to produce first light of a first color. The projector also includes a phosphor to selectively receive the first light and produce second light of a second color in response to the first light. The projector also includes a dichroic mirror to pass a portion of the second light to produce a third light of a third color. The dichroic mirror reflects a portion of the second light as fourth light of a fourth color.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 3, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gregory S. Pettitt, Michael Terry Davis, James Francis Hallas, John Marshall Ferri
  • SPATIAL LIGHT MODULATOR IMAGE DISPLAY PROJECTOR APPARATUS WITH SOLID STATE ILLUMINATION LIGHT SOURCES
    Publication number: 20180239230
    Abstract: In described examples, a projector includes a light source to produce first light of a first color. The projector also includes a phosphor to selectively receive the first light and produce second light of a second color in response to the first light. The projector also includes a dichroic mirror to pass a portion of the second light to produce a third light of a third color. The dichroic mirror reflects a portion of the second light as fourth light of a fourth color.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Inventors: Gregory S. Pettitt, Michael Terry Davis, James Francis Hallas, John Marshall Ferri