Patent ID: 8075162
Filing Date: 2011-12-13
Classification: F21V,G02B

Abstract:
1. A zoomable luminaire comprising: a source of light; a primary reflector with entry and exit apertures; at least one secondary reflector with entry and exit apertures; said source positioned to deliver light into said entry aperture of said primary reflector, and said primary reflector arranged to deliver said light at said exit aperture of said primary reflector; said luminaire having a retracted position for producing a beam of a first beam angle, wherein said primary reflector is nested within said at least one secondary reflector; said luminaire having at least one extended position for producing a beam of a second beam angle, wherein the exit aperture of said primary reflector is contiguous with the entry aperture of one said secondary reflector so that said light is delivered at said exit aperture of said one secondary reflector.