2 Pieces Focus Lens Dia20mm FL63.5mm + FL50.8mm

Description:

This item is a combination of two lens. Len dia 20mm, Focus length 63.5mm/2.5" & 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: λ/2per1"Dia

Package Includes:

2 Pieces Focal Lens of different types (Packed in boxes with foamed cotton)