2 Pcs Diameter 20mm Lens for CO2 Cutting Engraving Machine, FL: 50.8mm

Description:

- Len dia 20mm, Focus length 50.8mm/2", anti-reflective coated focal lens for 40-100W.

- Focus lens is the fitting of CO2 machine, which is used to focus the beam after reflection, to realize engraving or cutting.

- Meniscus type lens, better foucs and meticulous path of light.

- Can withstand high power density, firm film, resistant to wipe.

- Used for processing, fits for engraving machine, marking machine, cutting machine, etc..

Specification:

- Material: Znse

- Coating: 10.6um（AR Both Side）

- Diameter tolerance: +0/-0.13mm

- Centre Thickness Tolerance: ±0.25mm

- Focal Length Tolerance: <±2%

- Clear Aperture: >= 90% Diameter

- Scratch/Dig: 40-20

- Surface Accuracy: 入/2per1"Dia

Package Includes: 2Piece Focal Len (Packed in boxes with foamed cotton)