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Product Description

Upgrade your metallurgical microscope with this professional M Plan Apo L Long Working Distance Apochromatic Infinity Objective Lens, engineered for ultra-long working distance, flat-field, and full apochromatic correction. Designed for F=200mm infinity systems, it delivers exceptional resolution, color fidelity, and sharp imaging for material inspection, industrial research, and high-precision microscopy.

✅ Key Specifications

Model: M Plan Apo L Series
Magnification Options: 2X, 5X, 10X, 20X, 50X, 100X
Numerical Aperture (NA): 0.055 (2X), 0.14 (5X), 0.28 (10X), 0.34 (20X), 0.5 (50X), 0.7 (100X)
Working Distance (WD): 33.72mm (2X), 33.61mm (5X), 33.4mm (10X), 29.56mm (20X), 18.9mm (50X), 7.1mm (100X)
Mount Interface: Standard M26×0.705 Thread (compatible with Mitutoyo, Olympus, and other metallurgical microscopes)
Optical System: Infinity Corrected (∞), Plan (Flat Field), Apo (Apochromatic), L (Long Working Distance)
Lens Material: Full Optical Glass with Multi-layer Anti-reflection (AR) Coating
Housing Material: Pure Copper with Chrome Plating (surface oxidation treatment)
Field Number (FN): 25mm
Focal Length: F=200mm

✅ Core Features

Full Apochromatic (Apo) Correction: Eliminates chromatic aberration across the entire visible spectrum, delivering true color reproduction and edge-to-edge sharpness for high-precision measurement and imaging.
Ultra-Long Working Distance (LWD): Industry-leading extended working distance for all magnifications, providing ample space for sample manipulation, safe observation of thick/uneven samples, and non-contact inspection.
Plan Flat Field Correction: Eliminates field curvature, ensuring uniform sharpness across the entire field of view, perfect for panoramic imaging and industrial measurement.
Multi-layer AR Coated Optical Lenses: Premium glass lenses with advanced anti-reflection coating minimize light reflection, maximize light transmittance, and deliver bright, high-contrast, color-accurate images.
Durable Pure Copper Construction: Sturdy copper body with chrome plating ensures long-term optical stability, wear resistance, and reliable performance in industrial and laboratory environments.
Universal M26 Compatibility: Standard M26×0.705 thread fits seamlessly with most F=200mm infinity-corrected metallurgical microscopes, and can be adapted to RMS 20.2mm, M25, M27 mounts with optional adapter rings.
Infinity Corrected Optical System: Delivers superior resolution and clarity compared to finite systems, correcting spherical and chromatic aberration for consistent imaging quality.

✅ Wide Applications

Perfect for metallurgical analysis, semiconductor wafer inspection, PCB circuit board testing, material science research, machine vision, micro-macro photography, and educational laboratory use. Ideal for observing metal microstructures, crystals, thin films, and other reflective samples with ultra-long working distance.

✅ Package Includes

1 x Selected Magnification M Plan Apo L Infinity Metallurgical Objective Lens (with dust-proof storage case)

✅ Important Note

This objective is designed for infinity-corrected metallurgical microscopes with F=200mm tube lens and M26×0.705 thread. Please confirm your microscope's compatibility before purchase.
Adapter rings for RMS 20.2mm, M25, M27 mounts are available separately, please contact us for details.
We offer 100% quality inspection and reliable after-sales service to ensure your complete satisfaction.