title: New types of refractive-reflective aplanats for maximal flux concentration and collimation.
abstract: We identify and evaluate new categories of dual-contour refractive-reflective aplanatic lenses, some of which can satisfy total internal reflection at the secondary surface. Raytrace simulations for a representative design in both solar concentrator and collimator (illumination) mode reveal high efficiency while approaching the thermodynamic limit for radiative transfer.
authors.forename: Heylal
authors.initials: H
authors.lastname: Mashaal
authors.forename: Daniel
authors.initials: D
authors.lastname: Feuermann
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Gordon