Nikon CFI Plan Achromat 20× Microscope Objective Versatile 20× achromatic objective with flat-field correction for general and multi-modal imaging. 🔬 20× Magnification, NA 0.45 — Excellent balance of resolution and light collection. 🧠 CFI Plan Achromat Optical Design — Minimizes chromatic and spherical aberrations for uniform clarity. 📸 High Transmission Across Visible Spectrum — Sharp, high-contrast imaging for brightfield and basic fluorescence. 📏 Working Distance ~4.0 mm — Space for sample manipulation and accessory use. ⚙️ M25 Threaded Mount — Compatible with many upright microscope systems using infinity optics. 🧪 Product Description (Long-Form) 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. 🔎 Typical Applications Brightfield microscopy Routine fluorescence imaging Educational and research lab imaging Sample documentation and analysis Multi-modal microscopy workflows 📊 Key Specifications Specification Details Magnification 20× Numerical Aperture (NA) 0.45 Optical Design CFI Plan Achromat Working Distance ~4.0 mm Field Number 22 mm Wavelength Range ~380–700 nm Mount M25 × 0.75 thread Immersion Medium Air (dry) Parfocal Length ~60.41 mm Compatible Sensor Up to 2/3″ Condition New
