Patents Assigned to Electronics Theatre Controls
  • Patent number: 6092914
    Abstract: A lighting fixture configured to image a high-intensity beam of light at a distant location with a variable beam spread and a variable image distance. The lighting fixture includes an illuminator mounted on a front projection system. The illuminator includes an elliptical reflector defining two focal points. A lamp is at one of the reflector's focal points, while an aperture of the front projection system is at the reflector's other focal point. The front projection system includes a tubular housing having shutter blades moveably positionable in the aperture to obstruct light passing through the second focal point. A rear lens receives and transmits light emitted by the illuminator, while a front lens is configured to receive light transmitted by the first lens and project it at the distant location. The lenses are contained within the housing.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: July 25, 2000
    Assignee: Electronics Theatre Controls
    Inventors: Gregory F. Esakoff, Fred R. Foster