Patent ID: 8262252

Claim:
An illumination system comprising: an array of light sources arranged in a pre-determined manner in a first plane wherein d source is a characteristic dimension of the spatial arrangement of the light sources in the first plane representing the distance between adjacent light sources, an array of associated lenses arranged in substantially the same pre-determined manner in a second plane, each lens having substantially the same focal distance f lens and having a distance between a centerpoint of each of said associated lenses of d lens , said array of light sources and said array of lenses rotatably mounted relative to each other; the second plane being arranged substantially parallel to the first plane, the array of lenses being provided at a plane distance d plane from the array of light sources, the plane distance d plane being substantially equal to the focal distance f lens of the lenses, said rotatable mounting of said plurality of lenses and said plurality of light sources relative to each other sufficient for displacing the array of lenses with respect to the array of light sources parallel to the first plane so as to obtain a plurality of directional light beams projecting spots on a projection plane arranged at a projection distance d projection from the illumination system, wherein d projection ≧10×d source and d projection ≧10×d plane , wherein d lens <d source , wherein d lens is a characteristic dimension of the spatial arrangement of the lenses; wherein said dimension d lens <d source , causes said plurality of directed light beams to overlap to form a single spot when said array of lenses are in a first rotational position relative to said array of light sources; a rotatable mount positioning said array of lenses and said array of light sources in a second rotational position repositioning said single spot without tilting said illumination system and maintaining substantially the same distance of said d plane ; said rotatable mount positioning said array of lenses and said array of light sources in a third rotational position creating a broadened spot relative to said single spot wherein said plurality of directional beams overlap.