Under non-sequential mode, you may use 3vPb}
5uMh#dm^
Toroidal Lens which support aspheric surface \1'3--n
*6~ODiB
or you may use Biconic Lens if you make use of conic constant alone to create aspheric surface. I|lz;i}$
E4RvVfA0F
Hope this would help, bu tbear in mind that diffraction effect is not modelable in non-sequential mode.