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

High-resolution 40× objective with brightfield and multi-modal imaging performance.

• 🔬 40× Magnification, NA 0.65 — Excellent balance of detail and light collection.
• 🧠 Plan Achromat Optical Design — Flat imaging field with minimized chromatic aberrations.
• 📸 Wide Spectral Transmission — Strong performance in visible and fluorescence imaging.
• 📏 Working Distance ~0.66 mm — Designed for use with standard microscope slides and coverslips.
• ⚙️ Standard RMS Threaded Mount — Compatible with upright research microscope systems.

🧪 Product Description (Long-Form)

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.

🔎 Typical Applications

• Brightfield microscopy
• Fluorescence imaging
• Differential Interference Contrast (DIC)
• Phase contrast microscopy
• High-resolution structural imaging

📊 Key Specifications

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