Nikon CFI Plan 20X Objective

The Nikon 20× CFI Plan Achromatic Objective is a versatile microscope objective engineered for general microscopy applications where crisp, uniform imaging and broad applicability are essential. With 20× magnification and a numerical aperture (NA) of 0.45, this objective delivers a strong combination of resolution, contrast, and depth of field — suitable for brightfield observation, basic fluorescence imaging, and routine documentation.

Designed with Nikon’s CFI Plan Achromat optical correction, this lens minimizes chromatic and spherical aberrations to produce a flat, sharp field of view with consistent clarity from center to edge. This makes the objective well-suited for imaging tasks that demand accurate color representation and reliable image quality across the specimen.

The working distance of approximately 4.0 mm provides ample space above the sample for larger specimens, cover slips, manipulation tools, or accessories without sacrificing image clarity. The M25 × 0.75 threaded mount ensures compatibility with a broad range of upright microscopy systems that support infinity-corrected optics — making this objective a flexible choice for research, education, and clinical imaging.