Olympus UCPLANFL N 20x PH2 High NA Long Working Distance Objective

The Olympus UCPLANFL N 20X long working distance high-resolution phase contrast objective is specifically engineered for exceptional phase contrast microscopy combining high numerical aperture with extended working distance. The UCPLANFLN (Universal Plan Fluorite) optical design combines plan (flat-field) correction with fluorite elements, delivering exceptional image flatness across the entire field of view with superior chromatic aberration correction. This objective achieves the remarkable combination of 0.70 numerical aperture with 0.8-1.8mm working distance, providing resolution approaching that of standard objectives while maintaining extended clearance for thick specimens and micromanipulation. The integrated correction collar enables optimization for cover glass thickness from 0 to 1.6mm, compensating for spherical aberration introduced by varying cover glass thickness. Phase contrast microscopy enhances contrast in transparent, unstained specimens by converting phase shifts in light passing through the specimen into amplitude changes. The PH2 designation indicates this objective is optimized for use with 20x phase contrast condensers. The RMS thread ensures compatibility with Olympus BX, CKX, and IX series infinity corrected microscope systems. Excellent condition with flawless optics ensures optimal imaging performance for demanding research and laboratory applications.