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

This Premium 63.5mm (2.5-inch) CO2 laser focus lens is designed for cutting and engraving applications that benefit from a balance of focused detail, working clearance, and depth of focus. Constructed from zinc selenide (ZnSe), this lens is intended for compatible CO2 laser machines operating at a 10.6µm wavelength.

The 2.5-inch focal length provides a versatile option for general-purpose engraving and cutting. Compared with shorter focal length lenses, it offers greater depth of focus and additional working clearance, making it useful for moderately thick materials and surfaces with slight height variations.

Key Features

• 2.5-Inch Focal Length: Offers a balance of engraving detail, working clearance, and cutting performance.
• Versatile Applications: Suitable for general-purpose engraving and cutting where moderate depth of focus is beneficial.
• Zinc Selenide Optics: Infrared optical material commonly used to transmit and focus CO2 laser radiation.
• 20mm Diameter: Designed for compatible focal tube assemblies that accept 20mm lenses.
• Plano-Convex Design: Focuses the incoming laser beam onto the workpiece.
• Greater Focusing Tolerance: Provides increased depth of focus compared with shorter focal length lenses under similar conditions.

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 to maintain proper focus and air assist positioning.

Actual cutting and engraving 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.