2.5-100X Infinity Long Working Distance Metallographic Microscope Objective Lens

  
Long Working Distance Flat Field Infinit Infinity Plan Objective Lens 5X 10X 20X 50X 100X for Biological Microscope RMS 20.2mm. 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 RMS (M20.20.706).

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