Premium 38.1mm (1.5") ZnSe CO2 Laser Focus Lens – 20mm Diameter

This Premium 38.1mm (1.5-inch) CO2 laser focus lens is designed for fine-detail engraving and precision applications where a small, concentrated laser spot is important. Constructed from zinc selenide (ZnSe), the lens is intended for compatible CO2 laser machines operating at a 10.6µm wavelength.

The shorter 1.5-inch focal length makes this lens particularly useful for intricate graphics, small lettering, photo engraving, and detailed designs on relatively flat surfaces. Compared with longer focal length lenses, it can produce a smaller focused spot under comparable conditions. However, its shallower depth of focus requires accurate material positioning and makes it less suitable for thick materials or uneven surfaces.

Key Features

• 1.5-Inch Focal Length: Suitable for fine-detail engraving and precision laser applications.
• Fine Engraving Detail: Ideal for small text, intricate graphics, and detailed designs requiring a concentrated laser spot.
• Thin Material Processing: Suitable for precision engraving and cutting relatively thin materials.
• Zinc Selenide Optics: Infrared optical material commonly used to transmit and focus CO2 laser radiation.
• 20mm Diameter: Designed for compatible focal tube assemblies that accommodate 20mm lenses.
• Plano-Convex Design: Focuses the incoming laser beam onto the workpiece.

Technical Specifications

Compatibility

This lens is intended for compatible CO2 laser engraving and cutting machines that accommodate a 20mm diameter focusing lens and support a 38.1mm focal length.

Before ordering, verify your existing lens diameter, focal length, focal tube dimensions, and available focusing adjustment. Shorter focal lengths reduce the distance between the lens and material, so proper nozzle clearance and focusing capability are especially important.

Actual engraving and cutting performance depends on laser power, material type, thickness, beam characteristics, and machine configuration.

Handling & Maintenance

Handle the lens by its edges using appropriate protective gloves. Avoid touching either optical surface, and inspect regularly for contamination, scratches, or damage. Clean only with products and procedures approved for ZnSe laser optics.

Always power down the laser machine before servicing optical components. Do not use damaged or cracked lenses.