Olympus SPlan 20x Objective - 160mm Tube Length

Olympus SPlan 20X Objective Lens for BH2 Series Microscopes (1-LB541)

• 🔬 20X magnification — ideal mid-range power for tissue, cell, and materials imaging
• 🌟 SPlan (Semi-Plan) optics — flat, well-corrected field with excellent color fidelity
• 📐 NA 0.46 / WD 1.5mm — strong light-gathering with comfortable working distance
• 🔩 RMS thread — standard 160mm tube length, fits BH2 and compatible Olympus systems
• ✅ Condition: Lightly used — flawless optics

🔧 Product Description

The Olympus SPlan 20X (part number 1-LB541) is a Semi-Plan achromat objective engineered for the Olympus BH2 series microscope platform. At 20X with a numerical aperture of 0.46, it strikes the classic balance between magnification and field of view — wide enough to survey tissue architecture or surface features, yet powerful enough to resolve fine cellular detail.

The SPlan designation indicates Olympus's Semi-Plan correction, which delivers a noticeably flatter and more uniformly sharp field compared to standard achromats. Color correction is strong across the visible spectrum, making this objective well-suited for both brightfield histology and routine fluorescence work. With a 1.5mm working distance and standard RMS threading, it integrates seamlessly into any BH2-era Olympus nosepiece and is compatible with 160mm tube length optical systems from other manufacturers as well.

This unit is in excellent condition with flawless optics — no haze, fungus, scratches, or coating damage.

🔎 Typical Applications

• Histology and pathology slide review at mid-range magnification
• Cell biology and tissue culture observation
• Materials science and metallurgical inspection
• Routine brightfield and phase contrast microscopy on BH2 systems
• Upgrading or replacing objectives on legacy 160mm tube length microscopes

📊 Key Specifications

📋 University and institutional purchase orders accepted. Contact us with any questions — we're happy to help you find the right objective for your Olympus system.