dear..... >8HRnCyp/
Z_ *ZUN?B
did you try "Aspheric Surface 2", this surface allows you to control the aperture size in both X and Y direction...... Z YO/'YW
E=U^T/
Sorry, I guess my Chinese is poor so mistaking your 高度 as the x and y position so I guess when you said "矢高,即它的纵向长度" is one of the X or Y dimension .... (I hope)