Model ID: 11724
A Luneburg lens, in the most general sense, is a spherically symmetric thick lens with a variable-index refracting structure which will form perfect geometrical images of two concentric spheres onto each other. The Luneburg lens has a gradient of isotropic refractive index n radially out from its center. In the generalized Luneburg lens, there is a pair of conjugate foci outside the lens. There is no explicit support for modeling geometrical optics in the Particle Tracing Module, but an analogy between the Hamilton equations and the equations for rays in the zero wavelength limit allows the problem to be solved. This model uses the Mathematical Particle Tracing interface.