Olympus LUCPLANFLN 20X Objective – Long Working Distance

The Olympus LUCPLFLN20X2 20× Objective is a high-performance microscope objective specifically engineered for imaging applications that require a long working distance and broad spectral performance. Part of Olympus’s Long Working Distance Plan Semi-Apochromat series, this objective is designed to deliver high-quality, flat-field images while accommodating imaging through dishes, slides, and thicker sample holders without direct immersion.

With 20× magnification and a numerical aperture (NA) of 0.45, this lens offers strong resolution and excellent light gathering over a wide field, making it well-suited for brightfield, fluorescence, and multi-modal imaging in research, clinical, and industrial settings. Its Plan Semi-Apochromat optical design helps minimize chromatic and spherical aberrations, providing crisp, high-contrast images from center to edge — a key advantage for documentation and analysis workflows.

A defining feature of the LUCPLFLN20X2 is its extended working distance of approximately 6.6–7.8 mm, giving users ample space above the sample to image through vessels or accommodate accessory tools without compromising image quality. This makes it ideal for both upright and inverted microscope configurations where access to the specimen might be constrained by thick media or hardware.

In addition, this objective supports a broad spectral transmission range (≈340–1300 nm), enabling compatibility with a variety of imaging techniques, from ultraviolet and visible light microscopy to near-infrared applications — expanding its utility across diverse workflows.

The standard RMS threaded mount ensures compatibility with most upright research microscopes featuring infinity-corrected optics, allowing laboratories to integrate this objective easily into existing systems.