US Patent 7198396 Apparatus for providing light in a structure

Described herein is an apparatus for providing light to a structure consisting of a plurality of fibers, each said optical fiber having an emitting end and a receiving end, the emitting ends of the optical fibers for mounting in the plurality of apertures in the structure. The receiving ends of the optical fibers span to an enclosure for receiving a control circuit and a plurality of LEDs. The control circuit generates an oscillating sequence of signals for controlling the intensity of illumination of at least one of the LED's between at least two levels of illumination.