Abstract: A device having an inner surface with a combination of reflective and refractive surface facets swept about an axis of revolution perpendicular to the optical axis of the device. The outer surface has a non-planar, non-circular, non-spherical shape. This outer surface generates an appropriate intensity distribution in a direction generally parallel to the major axis of the output rectangle and may also distribute energy generally parallelly to the minor axis of the output rectangle as well.

Abstract: A device for creating a predetermined light output distribution having a substantially rectangular shape in angle space is provided having a lens with a revolved inner surface and a complex outer surface. The inner surface has a combination of reflective and refractive surface facets swept about an axis of revolution perpendicular to the optical axis of the device. The outer surface has a non-planar, non-circular, non-spherical shape. This outer surface generates an appropriate intensity distribution in a direction generally parallel to the major axis of the output rectangle and may also distribute energy generally parallelly to the minor axis of the output rectangle as well. The optical efficiency improvement in the design of this improved preferably LED-based product has several direct benefits including; increased reliability, lower operating temperature, reduced electrical requirements, greater product life and significantly reduced cost as compared to existing LED products.