100mm Infinity-Corrected Plan Objective S100x/0.85 Brightfield and Darkfield, 0.8 mm Working Distance - Euromex

The combination of 100× magnification, a 0.85 numerical aperture and Plan correction delivers crisp, high-contrast microstructure images for materials analysis; the short working distance of 0.8 mm suits high-resolution inspection on the bScope platform. Order the Plan PLMi S100×/0.85 directly via Metav Werkzeuge or ask our consultants for application advice.

Plan PLMi S100×/0.85 – 100× Infinity‑Corrected Objective for bScope by Euromex

The Plan PLMi S100×/0.85 is an infinity‑corrected microscope objective optimised for brightfield and darkfield materials science applications on the bScope series

• Plan correction for flat-field imaging
• High numerical aperture 0.85
• Compatible with bright- and dark-field
• Short working distance 0.8 mm

Precise imaging where microstructure matters

With a 100× magnification and 0.85 numerical aperture, this objective is designed to resolve fine details in metallographic and materials inspections. The Plan correction flattens the field so that edge-to-edge sharpness is improved, reducing the need for refocusing across specimens. Being infinity‑corrected means the lens integrates with modern tube optics and intermediate components without altering the designed focal plane, which simplifies optical system alignment and preserves image quality during assembly of camera adapters or polarisation modules.

Contrast options and practical performance benefits

The lens supports both brightfield and darkfield observation modes, enabling enhanced visibility of surface defects, inclusions and grain boundaries. The high aperture improves light collection for finer contrast and shallower depth of field, which is beneficial for surface detail at high magnification. The working distance of 0.8 mm allows close approach to the sample for highest resolution—suitable for prepared metallographic mounts and polished sections. These technical attributes translate into fewer retakes and faster inspection cycles in routine quality control.

Integration, handling and longevity for workshop use

Constructed for laboratory and production environments, the objective combines optical precision with robust handling. The absence of cover-glass correction (no cover-glass correction) signals that the lens is optimised for unmounted or directly prepared specimens rather than laminated covers—this reduces refractive mismatch for polished material samples. Regular cleaning with lint-free wipes and approved optical solvents preserves performance; mechanical mounting to the bScope turret follows standard microscope handling practices to ensure repeatable results across shifts.

Contact Metav Werkzeuge for tailored compatibility checks, delivery options and integration support for Euromex optics on your bScope instruments

Technical data

• SKU: BS.8800
• Label: Plan PLMi S100×/0.85 infinity-corrected IOS objective for brightfield and darkfield for bScope; working distance 0.8 mm; no cover-glass correction
• Manufacturer: Euromex

Facts

• Magnification: 100×
• Numerical aperture: 0.85
• Working distance: 0.8 mm

Special features

• Infinity-corrected optical design
• Plan field correction
• Brightfield and darkfield compatibility
• No cover-glass correction
• Product type: Objective / lens
• Model series: bScope

FAQ

Is this objective compatible with all bScope models?
The objective is specified for the bScope series; compatibility depends on the tube optics and turret spacing of the particular bScope model—the Plan PLMi S100×/0.85 pairs with standard infinity optical systems from Euromex.

How does the 0.8 mm working distance affect sample preparation?
A working distance of 0.8 mm requires prepared, flat specimens and care when locating the objective close to the surface; this short gap is typical for high‑NA lenses used in materials science where maximum resolution is required.

Can the objective be used with cover glasses or slides?
The lens is supplied without cover-glass correction, so image quality is optimised for specimens without a cover glass; using thick cover glasses may introduce spherical aberration.

What inspection tasks benefit most from this objective?
High-magnification surface and microstructure inspection—such as grain boundary analysis, inclusion detection and fine surface defect assessment—benefit from the 100×, 0.85 NA combination on the bScope.

Euromex Microscopen bv, Typograaf 8, 6921 VB Duiven, Netherlands, info@euromex.com