Olympus UCPLFLN 20X Objective – High NA Long Working Distance

The Olympus UCPLFLN20X2 20× Objective is a precision microscope objective engineered for advanced imaging applications where both high magnification and extended working distance are required. Part of Olympus’s Long Working Distance Plan Semi-Apochromatic series, this lens bridges the gap between detailed imaging and practical sample access — especially when working through thicker sample holders or vessels such as dishes, slides, or culture chambers.

With 20× magnification and a numerical aperture (NA) of 0.70, this objective delivers a compelling combination of strong resolution and excellent light collection, ideal for brightfield, fluorescence, and multi-modal imaging workflows. The Plan Semi-Apochromat optical design minimizes common optical distortions such as chromatic and spherical aberrations, helping produce sharper, high-contrast images that remain accurate from center to edge.

A defining benefit of this objective is its long working distance (approximately 0.80–1.80 mm) — providing space between the lens and specimen that allows researchers to image through thicker media without needing immersion. This makes the UCPLFLN20X2 particularly well suited for use with inverted microscope configurations, perfusion systems, live-cell environments, and any application where direct access above the sample is limited or requires additional tools.

Designed for compatibility with standard RMS-threaded upright microscopy systems, this objective integrates easily into existing research or clinical setups, making it a reliable choice for laboratories engaged in demanding imaging workflows across disciplines.