BEAM SHAPING TO SUIT DEMANDING APPLICATIONS
By an analogy to conventional parabolic or spherical mirros, reflective lenses can be have a point-focus or a linear configuration.
Very high optical concentration is created with the point-focus RAC when the individual focal spots produced by each rings are overlapped with high accuracy. Such configuration is useful when achieving high temperature is required, e.g., for a solar powered furnace or a heat-driven engine.
In an alternative configuration, the individual focal spots can be spread out apart from each other thus broadening and flattening the concentrated flux distribution. Highly uniform concentrated fluxes have been demonstrated using this technique. The efficient flux homogenization is unique to RAC optics and is possible due to the segmented nature of the Reflective Lens as well as its inherently high magnification power which provides sufficient cushion for spreading the concentrated beam over the entire area of the receiver.