Nikon CFI Plan Apo Lambda 4x Objective Lens | Wide-Field, High-Resolution

High-performance 4× objective with ultra-flat, high-resolution optics. Demo Unit, As New

• 🔬 4× Magnification, NA 0.20 — Broad field of view with excellent resolution for overview imaging.
• 🧠 CFI Plan Apochromat Lambda Optical Design — Ultra-flat imaging with minimized chromatic and spherical aberrations.
• 📸 Large Field Number (~25 mm) — Edge-to-edge clarity across a wide imaging field.
• 📏 Long Working Distance (~20 mm) — Ample room for vessels, manipulators, and slide holders.
• ⚙️ M25 Thread Mount — Compatible with most Nikon infinity-corrected research microscopes.

🧪 Product Description

The Nikon CFI Plan Apo Lambda 4× Objective is a precision microscope objective designed for wide-field imaging with exceptional flatness and color fidelity. As part of Nikon’s Plan Apochromat Lambda series, this lens delivers ultra-flat, high-resolution images with minimized chromatic and spherical aberrations from center to edge — making it well-suited for applications requiring broad, uniform imaging across a large field number (~25 mm).

With 4× magnification and a numerical aperture (NA) of 0.20, this objective provides a generous field of view and strong light collection, ideal for overview imaging, slide surveys, and documentation workflows. The large working distance of approximately 20 mm provides practical space above the sample, allowing flexibility when using larger specimen holders, culture dishes, and accessory tools during imaging.

Built with Nikon’s CFI Plan Apochromat Lambda optical design and optimized for wide-field performance, this objective delivers consistent high-contrast images across traditional brightfield and fluorescence modes, with true-to-color results even at the edges of the field — a significant advantage for digital imaging, stitching, and high-content analysis.

The objective features a standard M25 × 0.75 threaded mount, ensuring compatibility with most Nikon research microscopes that use infinity-corrected optics systems, making it a versatile addition to advanced microscopy setups.

🔎 Typical Applications

• Brightfield overview and large-area imaging
• Slide surveying and specimen mapping
• Wide-field fluorescence imaging
• Digital imaging and image stitching
• Educational, clinical, and research microscopy

📊 Key Specifications