Figure 4
From: Extended the depth of field and zoom microscope with varifocal lens
Captured image of JB/T9328-1999 resolution target. (a) Focal length is 50 mm. (b) Focal length is 150 mm. (c) Focal length is 50 mm and resolution of 6 lp/mm. (d) Focal length is 150 mm and resolution of 6 lp/mm. (e) MTF of PDMS lens at different focal length.
