1. J. C. Miñano, P. Benı́tez, J. C. Gonzalez, W. Falicoff, and H. J. Caufield, “High efficiency non-imaging optics,” U.S. Patent 6,639,733 (Oct. 28, 2003) and International Patents pending; P. Benı́tez, J. C. Miñano, and F. Muñoz, “Compact folded-optics illumination lens,” U.S. Patent Office Notice of Allowance for 10/269,479 (March 2004) and International Patents pending.
2. P. Benı́tez and J. C. Miñano, “Three-dimensional simultaneous multiplex-surface method and free-form illumination-optics designed therefrom,” US and International Patents Pending (2003).
3. Application of the conservation of etendue theorem for 2-D subdomains of the phase space in nonimaging concentrators
4. Consequences of skewness conservation for rotationally symmetric nonimaging devices
5. Design of three-dimensional nonimaging concentrators with inhomogeneous media