Olympus Plan Apo 1.25X Microscope Objective (PLAPON1.25X, NA 0.04, Infinity)

The Olympus Plan Apo N 1.25× Objective is a precision optical component engineered for wide-field overview imaging and initial specimen assessment in research, clinical, and educational microscopy. With 1.25× magnification and a numerical aperture (NA) of ~0.04, this objective provides an exceptionally large field of view, making it ideal for scanning slides, locating regions of interest, and establishing imaging context before engaging higher magnification optics.

Built with Plan Apochromat optical correction, the lens minimizes chromatic and spherical aberrations while delivering a flat and uniform imaging field across the visual plane. This ensures accurate color reproduction and consistent clarity from center to edge — a key advantage when conducting overview imaging, mapping large specimens, or documenting initial observations.

Designed for Olympus microscope systems that support infinity-corrected optics (UIS2), this objective includes a standard RMS threaded mount for broad compatibility and straightforward installation. Its extended working distance of approximately 16.5 mm provides ample room above the sample, accommodating larger slide holders, perfusion chambers, or auxiliary tools during live or fixed sample imaging.

Whether used as a standalone overview tool or paired with a high-resolution objective for multi-stage workflows, the Plan Apo N 1.25× Objective offers dependable performance and impressive field coverage across a variety of microscopy applications.