20x Objective Plan PLMi Brightfield/Darkfield 0.45 NA Long 3.1mm Working Distance M26 45mm Parfocal - Euromex

Easily achieve consistent, high-contrast inspection with 20x magnification and a 0.45 numerical aperture combined with a long 3.1 mm working distance; the optical design supports both brightfield and darkfield imaging while M26 threading and 45 mm parfocal compatibility simplify system integration. Order this objective directly via Metav Werkzeuge or consult our specialists for application advice.

Euromex Plan PLMi 20x/0.45 Objective (Brightfield/Darkfield) — 3.1 mm working distance, M26

The Plan PLMi 20x/0.45 Objective is a brightfield/darkfield microscope lens designed for inspection and quality-control applications that require a long working distance and standard 45 mm parfocal compatibility

• Plan optical design for flat field imaging
• 20x magnification with 0.45 numerical aperture
• Long 3.1 mm working distance for clearance
• M26 thread, 45 mm parfocal for system integration

Reliable optics that improve defect detection

The Plan correction delivers a flat, low-distortion image across the field of view, allowing repeatable imaging of parts and assemblies. At 20x magnification with a 0.45 NA, the lens provides the resolving power necessary to reveal fine surface detail while maintaining depth of field suited to inspection tasks. The mixed brightfield/darkfield capability enhances contrast for edges and relief features, which supports faster visual evaluation and fewer false rejections in quality-control routines.

Practical handling thanks to generous working distance

A 3.1 mm working distance gives useful clearance between the front lens and the specimen, reducing the risk of collisions with probes, fixtures or tall components during manual handling or automated inspection. Specified without cover glass correction, the optic is suitable for direct observation of thicker samples or mounted parts where a cover slip is not present. The combination of clearance and the absence of cover glass correction simplifies set-up in production environments and minimises handling steps.

Straightforward mechanical compatibility for rapid workflows

With an M26 thread and 45 mm parfocal standard, the lens integrates easily into existing microscope turrets and inspection systems. Parfocal compatibility preserves focus when changing objectives, reducing downtime for refocusing and improving throughput on repeat inspection tasks. The Plan PLMi 20x/0.45 Objective therefore supports efficient workflow transitions in laboratories and production benches where multiple magnifications are used sequentially.

Built to support consistent quality assurance

Manufactured by Euromex, this objective is targeted at inspection, assembly and metrology environments that demand dependable imaging and straightforward system integration. Optical correction and mechanical standards help maintain traceable inspection processes and contribute to consistent decision-making on the production line. For application matching and specification checks, technical enquiries are welcome to ensure the lens meets the intended measurement or inspection task.

For precise inspection optics from Euromex, contact Metav Werkzeuge in Emmerich for technical advice and to order the objective directly via info@metav-werkzeuge.com or by telephone on +49 2822 7131930

Technical data

• Article number: AI.8120
• Brand: Euromex
• Product type: Objective / lens
• Label: Plan PLMi 20x/0.45 Brightfield/Darkfield IOS Objective
• Cover glass correction: none

Facts

• Magnification: 20x
• Numerical aperture: 0.45
• Working distance: 3.1 mm
• Thread: M26
• Parfocal length: 45 mm

Special features

• Plan optical correction
• Brightfield and darkfield capability
• Long working distance
• IOS objective compatibility

FAQ

What is the working distance of this objective?
The working distance of the Euromex Plan PLMi 20x/0.45 Objective (SKU AI.8120) is 3.1 mm.

Is the lens corrected for cover glass thickness?
No, the objective is supplied without cover glass correction and is intended for direct observation of specimens without a cover slip.

Which mount and parfocal standard does it use?
The lens uses an M26 thread and is compatible with a 45 mm parfocal system.

Can the objective be used for both brightfield and darkfield inspection?
Yes, the optic supports both brightfield and darkfield illumination modes for enhanced contrast and edge detection.

Is the objective suitable for integration into production inspection systems?
Yes, the M26 threading and 45 mm parfocal standard facilitate integration into existing turrets and inspection benches, supporting rapid objective changes with minimal refocusing.

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