Patents by Inventor Nolan J. Murdock

Nolan J. Murdock 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: 5515119
    Abstract: A lighting system and method with variable light intensity for use in motion picture photography. In the lighting apparatus, light emitted from a source is passed through an aperture and then through a section of a movable, neutral density filter. The preferred filter is specially designed to have a variable density, continuously increasing from one side of the filter to the other. By changing the position of the filter, selectively placing higher or lower density sections in the light path, the intensity of the light emitted by the lighting apparatus may be varied. The neutral density filter is selected to be generally color neutral so that the color quality of the light passing therethrough remains unchanged. To ensure complete light blockage, a douser of opaque material is provided which is selectively interposed in the outgoing light path.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: May 7, 1996
    Assignee: Panavision International, L.P.
    Inventors: Nolan J. Murdock, Felipe Navarro
  • Patent number: 5371655
    Abstract: A lighting system and method with variable light intensity for use in motion picture photography. In the lighting apparatus, light emitted from a source is passed through an aperture and then through a section of a movable, neutral density filter. The preferred filter is specially designed to have a variable density, continuously increasing from one side of the filter to the other. By changing the position of the filter, selectively placing higher or lower density sections in the light path, the intensity of the light emitted by the lighting apparatus may be varied. The neutral density filter is selected to be generally color neutral so that the color quality of the light passing therethrough remains unchanged.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: December 6, 1994
    Assignee: Panavision International, L.P.
    Inventors: Nolan J. Murdock, Felipe Navarro