In one example, a reflector assembly includes a single reflector having at least two elliptical-shaped reflector cavities each with a respective focus point. The shape of the single reflector includes two partial elliptical-shaped reflector cavities having mirror-asymmetric profiles on each end of the single reflector each having a first side extending to a distal end and the first side longer than an opposite second side. The remaining elliptical-shaped reflector cavities have a first side and a second side the same length as the opposite second sides of the two partial elliptical-shaped reflector cavities.