Olympus Plan N 40X Microscope Objective (PLN40X, NA 0.65, Infinity)

The Olympus PLN 40× Objective is a precision optical lens designed for high-magnification microscopy with strong performance across brightfield, fluorescence, and multi-modal imaging techniques. Offering 40× magnification with a numerical aperture (NA) of 0.65, this objective delivers crisp, high-contrast images with excellent detail — perfect for cellular and fine structural studies.

Featuring a Plan Achromat optical design, this objective corrects chromatic and spherical aberrations to produce a flat, well-corrected image across the field of view. This reduces optical distortion and maintains sharpness from edge to edge, an important benefit when capturing high-resolution micrographs or performing quantitative image analysis.

With a working distance of approximately 0.66 mm, this objective is optimized for use with standard microscope slides and cover glass (~0.17 mm). Its standard RMS threaded mount ensures compatibility with a wide range of upright research microscopes, making it suitable for laboratory workflows across biological, clinical, educational, and materials science environments.