20x Plan Infinity-Corrected IOS Objective 0.40 NA 7.2mm Working Distance Brightfield/Darkfield - Euromex

Take advantage of a high-contrast 20x objective with a 0.40 numerical aperture and a practical 7.2 mm working distance to speed up material inspections while maintaining image flatness and resolution; order the Plan PLMi 20x/0.40 objective directly via Metav Werkzeuge or consult our specialists for application advice.

Plan PLMi 20x/0.40 Objective (Infinity-corrected) — Euromex bScope, 7.2 mm working distance

A Plan PLMi 20x/0.40 objective for the Euromex bScope, engineered for material science inspection and optimised for both brightfield and darkfield techniques

• Plan, infinity-corrected 20x 0.40 NA objective
• Optimised for brightfield and darkfield imaging
• 7.2 mm working distance for unmounted samples
• No cover-glass correction included

Consistent field flatness for reliable material analysis

This plan lens delivers a uniformly sharp image across the field, reducing peripheral distortion that can obscure microstructural details. With 20x magnification combined with a 0.40 numerical aperture, the optical design balances lateral resolution and depth of field, enabling clear observation of grain boundaries, inclusions and surface features. The infinity-corrected construction minimises chromatic aberration when used with infinity tube optics, which translates into more accurate visual assessments and fewer retakes during routine inspections. The result is a dependable optical basis for repeatable, traceable measurements in a production or laboratory setting.

Versatile illumination and practical sample clearance

Compatibility with both brightfield and darkfield methods gives the lens the flexibility to reveal contrast in polished metallographic specimens as well as surface and edge details that are otherwise difficult to detect. The 7.2 mm working distance provides sufficient clearance for bulky or uneven samples, facilitating handling and auxiliary stages without compromising image quality. As the objective is supplied without cover-glass correction, it is particularly suited to direct inspection of material surfaces and prepared metallographic mounts rather than applications requiring a cover slip; this specification avoids the artefacts that arise when cover-glass correction is misapplied.

Designed for bScope workflows and materials science use

Engineered for integration into the bScope series, this objective supports efficient microscopy workflows in research, quality control and failure analysis. The IOS designation denotes an infinity optical system aligned to modern microscope stands, ensuring compatibility with standard tube lens arrangements and modular illumination units. For laboratories that handle a range of metallic, ceramic and composite specimens, the lens provides a robust combination of contrast, working distance and imaging fidelity that helps reduce inspection time and improve decision-making on the shop floor.

For enquiries about integrating the Euromex Plan PLMi 20x/0.40 into existing inspection equipment and for fast supply from Emmerich, contact Metav Werkzeuge for personalised advice and reliable delivery.

Technical data

• Article number: BS.8820
• Label: Plan PLMi 20x/0.40 infinity-corrected IOS objective for brightfield and darkfield for bScope; working distance 7.2 mm; without cover-glass correction
• Product type: Objective / Lens
• Series: bScope
• Manufacturer: Euromex

Facts

• Magnification: 20x
• Numerical aperture: 0.40
• Working distance: 7.2 mm
• SKU: BS.8820

Special features

• Infinity-corrected optical design (IOS)
• Plan correction for flat field imaging
• Suitable for brightfield and darkfield
• No cover-glass correction included
• Intended for material science applications

FAQ

What magnification and resolution does this objective offer?
The Plan PLMi 20x/0.40 objective provides 20x magnification with a 0.40 numerical aperture, offering a balance between resolution and depth of field suitable for general materials inspection.

Can the lens be used for both brightfield and darkfield illumination?
Yes, the objective is optimised for brightfield and darkfield techniques, enabling contrast enhancement of surface features and microstructural elements.

Why is the 7.2 mm working distance important for material science?
A 7.2 mm working distance gives clearance for larger or uneven samples and allows the use of auxiliary stages without risking contact between the objective and specimen.

Is cover-glass correction included with this objective?
No; the lens is supplied without cover-glass correction, which makes it suitable for direct inspection of polished specimens and mounted samples where no cover slip is used.

Which microscope platforms is this objective compatible with?
The infinity-corrected IOS design makes the objective compatible with microscopes configured for infinity optics, such as Euromex bScope stands and comparable infinity tube systems.

Manufacturer: Euromex Microscopen bv; Typograaf 8; 6921 VB Duiven; The Netherlands; info@euromex.com