Olympus Plan N 20X Microscope Objective (PLN20X, NA 0.40, Infinity)

The Olympus PLN 20× Objective is a precision microscope objective designed for high-detail imaging across a range of biological and materials science applications. With 20× magnification and a numerical aperture (NA) of 0.45, this objective delivers excellent resolution, contrast, and light collection — making it a versatile choice for transmitted light microscopy, brightfield documentation, and many general imaging workflows.

Featuring a Plan achromat optical design, this objective corrects both chromatic and spherical aberrations to produce sharp, flat images with consistent clarity from center to edge. This makes it ideal for microscopy tasks that require accurate feature representation and uniform illumination over the entire field of view.

The working distance of approximately 3.1 mm provides sufficient space above the specimen for accessories such as micromanipulators, perfusion chambers, or environmental cells without compromising imaging performance. Designed to fit standard RMS-threaded microscope mounts, the PLN 20× integrates easily into most research, clinical, and educational microscope systems.