Premium 50.8mm (2") ZnSe CO2 Laser Focus Lens – 20mm Diameter

This Premium 50.8mm (2-inch) CO2 laser focus lens is a versatile option for everyday engraving and cutting applications. Constructed from zinc selenide (ZnSe), the lens is designed to focus the laser beam onto the workpiece in compatible CO2 laser machines operating at a 10.6µm wavelength.

The 2-inch focal length provides a practical balance between engraving detail and cutting performance. It is well suited for lettering, graphics, detailed engraving, and cutting relatively thin to moderately thick materials. Its combination of focused spot size and depth of focus makes it a useful general-purpose lens for a wide range of laser projects.

Key Features

• 2-Inch Focal Length: Offers a practical balance of engraving detail and cutting performance for everyday laser applications.
• Detailed Engraving: Suitable for lettering, graphics, and projects requiring a relatively small focused laser spot.
• Versatile Cutting: Works well for general-purpose cutting applications involving thinner and moderately thick 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 material surface.

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 50.8mm 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 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.