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13. The method of claim 12, further comprising, causing light from the non-coherent light source to pass through a second condenser lens, wherein the first and second condenser lenses comprise an outer condenser lens and an inner condenser lens and wherein, when in operation, light from the at least one non-coherent light source passes through the inner condenser lens and the rotating interferential filter wheel, and is eventually collected and redirected by the outer condenser lens to create the cloud-like effect.
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