4X 10X 20X 40X 60X 100X Biological Microscope Objectives Achromatic Lens
Features:
Type: achromatic objective lens for microscope
Magnification: 4X/10X/20X(S)/40X(S)/60X(S)/100X(S+Oil)
Mounting Size: 20.2mm
Standard RMS thread
Material: precision copper core
Tube length: 160 mm.
Standard coverslip thickness 0.18mm.
for biological microscope
Detailed information :
4X: Numeric aperture (NA) 0.1; working distance 18mm
10X: Numeric aperture (NA) 0.25; working distance 7mm
20X(S): Numeric aperture (NA) 0.4; working distance 0.55mm
40X(S): Numeric aperture (NA) 0.65; working distance 0.53mm
60X(S): Numeric aperture (NA) 0.65; working distance 0.12mm
100X (S+Oil): Numeric aperture (NA) 1.25; working distance 0.125mm