5x Plan Objective 0.12 NA Brightfield/Darkfield Long WD 20mm Parfocal 45mm M26 - Euromex

Take advantage of 5x magnification, a 0.12 numerical aperture and a 20 mm working distance for reliable imaging of larger specimens; order directly via Metav Werkzeuge or contact our consultants for compatibility advice.

Plan PLMi 5x/0.12 IOS Objective — Euromex brightfield/darkfield lens with long 20 mm working distance and M26 thread

Plan PLMi 5x/0.12 IOS Objective is a precision microscopy objective designed for brightfield and darkfield observation, offering a long working distance for bulky or uneven samples

• Plan optical design for flat field
• 5x magnification, NA 0.12
• Long 20 mm working distance
• Compatible with M26 thread

Accurate, flat-field imaging for reproducible results

The Plan optical design delivers a consistently flat field across the image plane, reducing edge distortion that can complicate measurement and documentation. With 5x magnification and a 0.12 numerical aperture, this objective balances depth of field and resolution, making it suitable for metrology tasks where surface detail and overall context are both important. The objective is specified for brightfield/darkfield illumination modes, enabling contrast enhancement of fine structures without additional complex optics. These characteristics support reliable, repeatable captures that speed up inspection workflows and minimise rework.

Generous working distance for larger or uneven samples

A 20 mm working distance provides practical clearance between the objective and the specimen, allowing inspection of components with fixtures, small assemblies, or slightly raised features. This extended gap helps prevent accidental contact with the lens and makes handling and fixturing simpler in routine inspection. The absence of cover-glass correction means the lens is optimised for direct observation of specimens without a standard cover slip; this should be considered when planning sample preparation. The long working distance thus reduces handling risk and increases throughput for batch inspections.

Easy integration with standard microscope systems

The objective uses an M26 thread and a 45 mm parfocal reference, enabling straightforward mounting and parfocal alignment in compatible microscope turrets and nosepieces. Parfocal compatibility ensures that once the objective is focused, switching to similar parfocal optics requires minimal refocusing, saving operator time during multi-magnification inspections. The objective’s IOS designation signals suitability for integrated optical systems where consistent mechanical and optical interfaces are required, simplifying retrofits and system builds without bespoke adaptors.

Practical advantages for shop floor and laboratory use

The combination of Plan correction, mid-range magnification and an extended working distance makes this lens particularly useful for production control and quality assurance tasks. Its optical specification supports clear observation of surface defects, coatings, and component geometry without excessive setup complexity. The lens is therefore well suited to inspection benches and educational or research microscopes where a robust, general-purpose objective is required. Equipment planners benefit from reduced need for specimen modification and from the objective’s straightforward mechanical compatibility.

Contact Metav Werkzeuge for tailored advice on system compatibility and procurement for precise microscopy solutions from Emmerich.

Technical data

• SKU: AI.8105
• Product type: Objective / Lens
• Label: Plan PLMi 5x/0.12 brightfield/darkfield IOS objective, long working distance 20 mm, without cover glass correction (45 mm parfocal, M26)

Facts

• Magnification: 5×
• Numerical aperture: 0.12
• Working distance: 20 mm
• Parfocal length: 45 mm
• Mount thread: M26

Special features

• Plan optical design
• Brightfield and darkfield capability
• No cover glass correction
• Long working distance for bulky specimens

FAQ

What is the primary application for this objective?
The objective is intended for general inspection and documentation tasks where a flat field and extended working distance aid observation; the Euromex Plan PLMi 5x/0.12 IOS objective (SKU AI.8105) suits production control and laboratory inspection.

Can this objective be used with cover slips?
This lens is supplied without cover glass correction, so imaging through a standard cover slip may require verification; the Euromex objective performs optimally when specimens are observed without a cover glass.

How does the parfocal specification help during inspections?
A 45 mm parfocal reference allows quick switching between compatible objectives with minimal refocus, improving workflow efficiency when using the same optical system for multiple magnifications.

Is the working distance sufficient for fixtured parts?
The 20 mm working distance provides significant clearance for small fixtures and raised components, reducing the chance of contact and easing handling during inspection.

What mounting is required for the objective?
The objective fits microscopes and adapters that accept an M26 thread; confirm turret or nosepiece compatibility before installation.

Manufacturer: Euromex Microscopen bv, Typograaf 8, 6921 VB Duiven, Nederland, info@euromex.com