Long working distance objective PA-20-L-A for clear field ob

Specification:
Product parameter:

Model number magnification Resolution (um) Numerical aperture (N.A) Focus distance (mm) Working distance (W.D) (mm) Focal depth ±D.F (um) Pupil meridian (mm) Field of view (1/2 "type)
(mm) Net weight (g)
PA-2-B 2X 5 0.055 100 34 91 ∅12 2.4×3.2 250
PA-5 5X 2 0.14 40 41 14 ∅4.8 0.96×1.28 240
PA-10-A 10X 0.92 0.3 20 34 3.1 ∅2.4 0.48×0.64 240
PA-20-L-A 20X 0.92 0.3 10 31.1 3.1 ∅1.2 0.24×0.32 280
PA-50-L-A 50X 0.65 0.42 4 20.7 1.6 ∅0.48 0.10×0.13 280
PA-1000-L 100X 0.52 0.53 2 12.1 0.98 ∅0.24 0.05×0.06 340