Classic "Universal Lens": 10x magnification + NA=0.28, balancing resolution (1.0μm) and working distance (34mm), suitable for over 90% of conventional observations; lightweight and efficient: 217g weight is friendly to microscope loads, making long-term observation less tiring.

It is applied to the observation of intracellular structures (such as cell nuclei), bacterial morphology, and grain structures on metal polished surfaces.