2.5X-100X Infinity Metallurgical Microscope L Plan Achromatic Objective Lens

  
Infinity Long Working Distance 2.5X 5X 10X 20X 50X 100X Metallurgical Microscope Plan Achromatic Objective Lens RMS Thread Size. Name:Long Working Distance Flat Field Infinite Infinity Plan Objective Lens. Magnification: 2.5X, 5X, 10X, 20X, 50X, 100X. Numberical Aperture(NA): 0.08, 0.12, 0.25, 0.4, 0.55, 0.8. Working Distance(mm): 11.2, 23.6, 17.7, 10.4, 7, 3.2. Focal Length(mm): 72, 36, 18, 9, 3.6, 1.8. Resolution(um): 4.1, 2.8, 1.34, 0.8, 0.61, 0.41.

Focal Depth DF(um): 42.9, 42.9, 10.1, 3.5, 1.4, 0.6. Object field of view(on object, mm): 9, 4.5, 2.2, 1.1, 0.45, 0.22. Image square field of view(On image, mm):22.5, 22.5, 22.5, 22.5, 22.5, 22.5.