Patents by Inventor Richard S. Beliveau

Richard S. Beliveau 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).

  • Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio
    Patent number: 6575577
    Abstract: An apparatus is disclosed comprising a lamp which produces a first light which may be a white light; a first light valve, a second light valve, a first color separator, and a first aperture device. The first color separator receives the white light from the lamp, and separates the white light into a first color light and a first residual light. The first aperture device receives the first color light and the first aperture device can be controlled to modify a frequency of the first color light to the first light valve. The second light valve receives at least a portion of the first residual light. The first aperture device could also be controlled to substantially block at least a portion of the first color light.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: June 10, 2003
    Inventor: Richard S. Beliveau
  • Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio
    Publication number: 20020021569
    Abstract: An apparatus is disclosed comprising a lamp which produces a first light which may be a white light; a first light valve, a second light valve, a first color separator, and a first aperture device. The first color separator receives the white light from the lamp, and separates the white light into a first color light and a first residual light. The first aperture device receives the first color light and the first aperture device can be controlled to modify a frequency of the first color light to the first light valve. The second light valve receives at least a portion of the first residual light. The first aperture device could also be controlled to substantially block at least a portion of the first color light.
    Type: Application
    Filed: October 5, 2001
    Publication date: February 21, 2002
    Inventor: Richard S. Beliveau