45mm Infinity IOS Plan Semi-Apo PL-SAMi 5x/0.15 BD Objective 20mm Working Distance M26 Thread - Euromex

Take advantage of the combination of precise plan optical correction, a practical 20 mm working distance and standard M26 mounting for reliable imaging in inspection and routine metrology; order the objective directly via Metav Werkzeuge or consult our specialists for integration support.

Unendlich IOS 45 mm Plan semi-apo PL‑SAMi 5x/0.15 BD Objective — 20 mm working distance

The Unendlich IOS 45 mm Plan semi-apo PL‑SAMi 5x/0.15 BD Objective is an infinity-corrected, plan optical lens designed for industrial and laboratory imaging where a flat field and consistent contrast are required

• Infinity-corrected plan optics
• 5× magnification with 0.15 numerical aperture
• 20 mm working distance for easier handling
• M26 mounting thread, no cover glass correction

Flat-field imaging with low chromatic error for inspection

The combination of plan optics and a semi-apochromatic correction delivers a noticeably flatter image across the field than standard objectives, which is critical for dimensional inspection and documentation. With 5× magnification and a 0.15 numerical aperture, the lens balances lateral resolution and depth of field so small features remain discernible while a useful portion of the sample stays in focus. The term semi-apochromatic indicates that the design corrects chromatic aberration across several wavelengths, reducing colour fringing without the complexity of a full apochromat — a pragmatic choice for production and quality-control workflows where repeatable, high-contrast images matter.

Generous working distance to accommodate fixtures and samples

A 20 mm working distance provides room for lighting, probes or fixturing beneath the objective, simplifying sample handling and reducing the risk of collisions during set-up. The objective is specified with no cover glass correction, which means it is optimised for samples viewed without a cover slip; this is advantageous for components, circuit boards and bulk materials where a cover glass would interfere with measurement or handling. The absence of cover glass correction also preserves the designed focal plane, making focusing behaviour predictable during series inspections.

Simple mechanical integration for industrial microscope systems

The standard M26 mounting thread ensures compatibility with many trinocular and modular microscope accessories, facilitating rapid integration into existing optical trains. As an infinity-corrected element, the lens forms part of an infinity optical system and requires a compatible tube lens or imaging path for correct magnification and parfocality. The straightforward mechanical and optical interface reduces installation time and helps maintain optical alignment in a workshop setting, supporting uninterrupted measurement tasks and visual checks.

Practical performance and guidance for selection

For tasks that prioritise a combination of field flatness and handling convenience, this objective offers an efficient solution. The 5× power is suitable for overview imaging and coarse metrology, while the 0.15 NA gives a compromise between resolving power and tolerance to slight focus variations. When selecting an objective, consider the intended illumination method and the microscope’s tube lens focal length to ensure the overall system achieves the desired image scale and resolution. For bespoke setups or integration into measurement rigs, technical consultation is available to verify compatibility and optimise performance.

Contact Metav Werkzeuge today to discuss integration options, accessory compatibility or to order this PL‑SAMi 5× objective directly from our Emmerich facility — our consultants will advise on system matching and supply logistics.

Technical Data

• Article number: DX.8105
• Label: Unendlich IOS 45 mm Plan semi-apo PL‑SAMi 5x/0.15 BD Objective. Working distance 20 mm. No cover glass correction. M26 thread
• Product type: Objective / Lens

Data

• Magnification: 5×
• Numerical aperture: 0.15
• Working distance: 20 mm
• Mounting thread: M26
• SKU: DX.8105

Special features

• Infinity-corrected optical design
• Plan field correction
• Semi-apochromatic chromatic correction
• No cover glass correction
• Industrial inspection and metrology suitability

FAQ

What does infinity-corrected mean for my setup?
Infinity-corrected optics transmit parallel rays to a tube lens; the objective relies on a compatible tube lens inside the microscope to create the final image. The PL‑SAMi 5× functions within such systems and offers a flat field when used with the correct tube lens.

Is this objective suitable for routine measurement on circuit boards?
Yes, the objective’s flat-field plan design and 20 mm working distance make it well suited to inspect and document components on circuit boards without a cover glass.

How does the lack of cover glass correction affect imaging?
No cover glass correction means the objective is optimised for specimens viewed without a cover slip; this reduces focal shifts caused by glass and is preferable for bulk or mounted components where a cover glass would be impractical.

Will the M26 thread fit my existing microscope?
Many industrial and modular microscope systems accept M26-mounted objectives; however, verification of thread compatibility and parfocality with the microscope body or adapter is recommended before installation.

What resolution can be expected from a 0.15 NA, 5× objective?
A 0.15 numerical aperture provides moderate resolving power suitable for coarse fine-detail inspection while maintaining a comfortable depth of field; it is designed to balance resolution and usability in production environments.

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