The Ex20 series microscope has entirely new improved on the traditional one. With the infinite plan achromatic objective.
Ex20 provide high-resolution image. And the image is flat and sharp.

Head
Seidentopf Binocular /Trinocular Head inclined at 30°
Interpupillary Range 48mm-76mm
Eyepiece
Pair of PL10X/18T , FN18mm wide field
with adjustable diopter eyepieces and 1 pointer
Objective
Reversed quadruple with OIP Infinity Plan Achromatic objective
4X(NA 0.1) WD 11.9,
10X(NA 0.25) WD 12.1,
40X(NA 0.65) WD 0.36,
100X (NA 1.25)(oil) WD 0.18
Stage
Double layers Mechanical Stage with coaxial drive control
Size: 140mm X 132mm, move range 76x50 mm
Condenser
NA1.25 Koehler illuminatory condenser
(with socket for phase contrast and DF accessories)
Illumination
100V-240 fluturate of voltage, Single high brightness 3W LED with continuous intensity control
Option
Trinocular ,Mirror, Polarizer, Phase Contrast inserter ,Darkfield Inserter,
Dioptor Eyepiece 10X/20mm, 6V/20W halogen illuminator.
Ceramic Stage, Digital Camera Adapter, Objective 60x (NA 0.85) Wd 0.3