NBLV-U20
| Optical System | Infinity Plan Optical System |
| Function | Bright Field, Optional Dark Field, Polarizing, Phase Contrast, Fluorescent |
| Head | Seidentopf Trinocular Head, 30° Inclined, 360° Rotatable, Interpupillary 48~75mm, Left Eyepiece Tube Diopter Adjustable |
| Eyepiece | Extra Wide Field Eyepiece EW10x/22mm, Eyepiece Tube Dia.30mm |
| Nosepiece | Backward Quintuple Nosepiece, With Slide Slot |
| Objective | Infinity Plan Achromatic Objective 4x,10x,40x,100x |
| Focusing | Coaxial Coarse & Fine Adjustment, Focusing Range 24mm, Fine Division 0.001mm, Coarse Stroke 37.7mm |
| Working Stage | Double Layer Mechanical Stage, 185*142mm, Moving Range 55*75mm |
| Condenser | Swing Out Condenser N.A.0.9/0.25 |
| Illumination | Halogen Lamp 6V30W, External Kohler Illumination, With Asperical Collector, Brightness Adjustable |
| Filter | Green, Blue |
| Adapter | Trinocular Adapter + Eyepiece Tube Photo Adapter Dia.23.2mm |
