Patents by Inventor Estill Thone Hall

Estill Thone Hall 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: 6151163
    Abstract: A screen for a projection-type video display apparatus. A linear-type Fresnel lens has a lens pattern on a first side for receiving light energy from a light source. A second side of the Fresnel lens is opposite the first side. The light energy exits the Fresnel lens from the second side. A hologram is affixed to the second side of the Fresnel lens for managing the dispersion of the light energy exiting from the second side of the Fresnel lens. The hologram is affixed to the Fresnel lens by any of various lamination processes.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: November 21, 2000
    Assignee: Thomson Licensing S.A.
    Inventors: Estill Thone Hall, Jr., Wendy Rene Pfile
  • Patent number: 6078351
    Abstract: A projection television comprises a projection screen formed by a three dimensional hologram disposed on a film substrate. A projection tube has an optical path in a substantially orthogonal orientation with the screen and two other projection tubes have respective optical paths converging toward the first optical path at angles of incidence .alpha.. The hologram has a configuration effective for reducing color shift in the displayed images. The screen has a color shift less than or equal to approximately 5 for all angles .alpha., where 0.degree.<.alpha..ltoreq.30.degree., as determined by the maximum value obtained from at least one of the following expressions: ##EQU1## where .theta. is any angle within a range horizontal viewing angles, C(.theta.) is the color shift at angle .theta., red(.theta.) is the red luminance level at angle .theta., blue(.theta.) is the blue luminance level at angle .theta. and green(.theta.) is the green luminance level at angle .theta..
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: June 20, 2000
    Assignee: Thomson Consumer Electronics, Inc.
    Inventors: Estill Thone Hall, Jr., Wendy Rene Pfile