Figure. 2
From: Bifocal flat lens with different imaging characteristics for a dual-sensor imaging system
Focusing properties of the BDL and FZP. (a) Axial intensity distribution of the BDL. (b) Axial intensity distribution of the third focus of the BDL. (c,d) Axial intensity distribution of the short and long foci of the BDL. (e–g) The intensities of corresponding focal spots of the BDL. (h–j) The intensities of corresponding focal spots of the FZP. (k) Axial intensity distribution of the third focus of the FZP. (l,m) Axial intensity distribution of the short and long foci of the FZP. (n) Axial intensity distribution of the FZP. (o) Comparison of the short focus of the BDL and FZP. (p) Comparison of the long focus of the BDL and FZP.
