Under non-sequential mode, you may use D.{vuftu
Q3l>xh
Toroidal Lens which support aspheric surface N*Q*>q
>g!$H}\
or you may use Biconic Lens if you make use of conic constant alone to create aspheric surface. q[qX O5
3Y)z{o>P
Hope this would help, bu tbear in mind that diffraction effect is not modelable in non-sequential mode.