ILLUMINATION SYSTEM
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Accused Products
Abstract
The illumination system has an array of light sources (1, 1′, . . . ) such as an array of light emitting diodes arranged in a pre-determined manner in a first plane (11), wherein dsource is a characteristic dimension of the spatial arrangement of the light sources in the first plane. An array of associated lenses (2, 2′, . . . ) is arranged in substantially the same pre-determined manner in a second plane (12). Each lens has substantially the same focal distance flens. The array of lenses is provided at a plane distance dplane from the array of light sources. The plane distance dplane is substantially equal to the focal distance flens of the lenses. The illumination system has displacement means for displacing the array of lenses with respect to the array of light sources so as to obtain a plurality of directional light beams projecting spots on a projection plane arranged at a projection distance dprojection from the illumination system, wherein dprojection≧10×dsource and dprojection≧10×dplane.
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Citations
21 Claims
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1-11. -11. (canceled)
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12. An illumination system comprising:
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an array of light sources (1, 1′
, . . . ) arranged in a pre-determined manner in a first plane (11), wherein dsource is a characteristic dimension of the spatial arrangement of the light sources (1, 1′
, . . . ) in the first plane (11),an array of associated lenses (2, 2′
, . . . ) arranged in substantially the same pre-determined manner in a second plane (12), each lens (2, 2′
, . . . ) having substantially the same focal distance flens,the second plane (12) being arranged substantially parallel to the first plane (11), the array of lenses (2, 2′
, . . . ) being provided at a plane distance dplane from the array of light sources (1, 1′
, . . . ), the plane distance dplane being substantially equal to the focal distance flens of the lenses (2, 2′
, . . . ),the illumination system further comprising displacement means for displacing the array of lenses (2, 2′
, . . . ) with respect to the array of light sources (1, 1′
, . . . ) parallel to the first plane (11) so as to obtain a plurality of directional light beams projecting spots (3, 3′
, . . . ) on a projection plane (13) arranged at a projection distance dprojection from the illumination system, wherein dprojection≧
10×
dsource and dprojection≧
10×
dplane, wherein dlens<
dsource, wherein dlens is a characteristic dimension of the spatial arrangement of the lenses (2, 2′
, . . . ). - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification