Patents Assigned to The University of Chicago Development Corporation The Argonne National Laboratory
  • Patent number: 5557478
    Abstract: A nonimaging radiant energy device may include a hyperbolically shaped reflective element with a radiant energy inlet and a radiant energy outlet. A convex lens is provided at the radiant energy inlet and a concave lens is provided at the radiant energy outlet. Due to the provision of the lenses and the shape of the walls of the reflective element, the radiant energy incident at the radiant energy inlet within a predetermined angle of acceptance is emitted from the radiant energy outlet exclusively within an acute exit angle. In another embodiment, the radiant energy device may include two interconnected hyperbolically shaped reflective elements with a respective convex lens being provided at each aperture of the device.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: September 17, 1996
    Assignee: The University of Chicago Development Corporation The Argonne National Laboratory
    Inventors: Roland Winston, Xiaohui Ning