II-2 REFRACTION at ASPHERICAL SURFACES

II-2  Refraction at Aspherical Surfaces

                  II-2-A   Modification of wavefronts at oval interfaces                                                                                                                    

                   II-2-B   Ellipsoids and their connection with Optics (the variational principle)                                                               

                   II-2-C   Hyperboloids and their connection with Optics (the variational principle)                                                     Reading assignment