Patent ID: 6041531
Filing Date: 2000-03-28
Classification: G09F

Abstract:
A blacklight special effect system comprising:a blacklight source for producing a beam of ultraviolet light:a blacklight fixture comprising:a drum for interacting, during operation, with the beam of ultraviolet light produced by the blacklight source to produce a modified beam of ultraviolet light;a motor for rotating said drum about an axis of rotation; anda frame for locating, during operation, all of said drum between the blacklight source and the projection surface;wherein said drum includes a first pair of areas that are separate from one another and, during operation, block a portion of the beam of ultraviolet light produced by the blacklight source from reaching the projection surface;wherein said drum includes a second pair of areas that are separated from one another by said first pair of areas and permit, during operation, a portion of the beam of ultraviolet light produced by the blacklight source to enter said drum through one of said second pair of areas, traverse said drum, and exit said drum through the other of said second pair of areas; anda projection surface for receiving the modified beam of ultraviolet light and, in response thereto, producing visible light.