Patent ID: 7148497
Filing Date: 2006-12-12
Classification: A01K,F21S,F21V,F21W,F21Y,G01J

Abstract:
1. An apparatus for selectively producing one or more of a plurality of wavelength distributions of light, comprising: a primary light source having a primary wavelength distribution; at least one wavelength-transforming material that, in response to illumination by said primary light source produces secondary light having a wavelength distribution different from the primary light wavelength distribution; a wavelength-transforming material selection mechanism for placing at least one selected portion of said at least one wavelength-transforming materials relative to said primary light source, whereby illumination by said primary light source takes place, such that the selected portion of said at least one wavelength-transforming materials emit from the apparatus a secondary light having a wavelength distribution different from the primary light wavelength distribution; wherein said wavelength-transforming material selection mechanism comprises a transparent substrate movably coupled proximate to said primary light source, said transparent substrate having said at least one wavelength transforming material disposed thereon upon less than the total surface area of one side of said transparent substrate thereby leaving at least one completely uncoated transparent section; and wherein selectable relative motion of said transparent substrate alternatively places at least a selected portion of said transparent substrate relative to said primary light source in a preferred direction of emission.