Under non-sequential mode, you may use @x+2b0 b
T-6<qh
Toroidal Lens which support aspheric surface 3u$1W@T(
6`@J=Q?
or you may use Biconic Lens if you make use of conic constant alone to create aspheric surface. PBCGC^0{
6{HCF-cQd
Hope this would help, bu tbear in mind that diffraction effect is not modelable in non-sequential mode.