63.5mm (2.5") ZnSe CO2 Laser Focus Lens – 20mm Diameter

This 63.5mm (2.5-inch) CO2 laser focus lens provides a balance of cutting performance, engraving detail, and depth of focus. Made from zinc selenide (ZnSe), it is designed to focus the laser beam onto the workpiece in compatible CO2 laser engraving and cutting machines operating at a 10.6µm wavelength.

The 2.5-inch focal length offers greater depth of focus than shorter lenses, making it a practical choice for cutting moderately thick materials and working with surfaces that have slight height variations. It also provides good general-purpose engraving performance, although shorter focal lengths are typically preferred for extremely fine details.

Key Features

• 2.5-Inch Focal Length: Balances cutting depth and engraving detail for a wide range of applications.
• Zinc Selenide Construction: Optical material designed to transmit and focus CO2 laser radiation.
• 20mm Diameter: Fits compatible focal tube assemblies designed for 20mm lenses.
• Plano-Convex Design: Focuses the laser beam onto the material surface.
• Greater Depth of Focus: Provides additional focusing tolerance compared with shorter focal length lenses.

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 63.5mm focal length.

Before ordering, verify your existing lens diameter, focal length, focal tube dimensions, and available focusing adjustment. Changing focal lengths may require adjusting the focal tube or nozzle configuration.

Handling & Maintenance

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

Always power down the laser machine and follow proper safety procedures before servicing optical components. Do not use damaged or cracked lenses.