Feature

●High Quality ZnSe Material. Excellent Optical Properties. Plano convex shape (Convex-concave) lens for better quality when engraving.
●Superb Coating Process: Double-sided Solid Coating. Wiping Resistance. Long Working Life.
●High Precision Process: Excellent Substrate. Precision Slicing, Polishing, Grinding Processes. High Temperature, Laser Resistance.
●High Transmittance: High Quality Material and Exquisite Coating. Reduce the Loss of Laser. Higher Work Efficiency.
●Diameter: 19mm(0.75 inch), Focal length: 25.4mm(1 inch), Thickness: approximate 2.2mm (0.09 inch)

[D:19.05mm FL:50.8mm  & 2  ]





Description

Attention

  1. CO2 laser focal lens can be applied to CO2 laser engraving/cutting machines.
  2. Generally, a laser machine needs 1 piece of focal lens and 3 reflective mirrors.
  3. For engraving, it’s recommended to use the lens of focal length 38.1/50.8mm; for cutting, lenses of focal length 63.5/76.2/101.6mm are more commonly used.
  4. Suggestion: convex upward, the plane side faces to material.

Product Details - D19.05mm

Diameter 19.05mm/0.75 inch (‘+0.0/-0.1mm)
Focal Length 25.4/38.1/50.8/63.5/76.2/101.6/127/190.5mm (‘±0.01mm)
Thickness FL50.8/63.5mm:2mm; others:2.2mm (+0.2mm/-0.1mm)
Material China PVD Znse
Compatible Power 30W-100W
Transmittance ≥99.5%
Wavelength 10.6um
Shape FL50.8/63.5mm:Meniscus; Others:Plano-Convex
Double-side AR Coating R＜0.5% per surface
Clear Aperture ＞90% (polished)
Surface Quility 40-20 scratch and dig
Centration ＜3 arc minutes
Package 1 pcs, 0.1KG
Package Dimension 6cm x 6cm x 2cm
11

How to determine focal length?

22

Notes:

  1. Before installing the lens, please confirm the diameter and focal length.
  2. The focal length is the distance between the lens and the cutting/engraving material.
  3. Suggestion: convex upward, the plane side faces to material.

国产 进口 GaAs Mo Si
China PVD ZnSe Focal Lens USA CVD ZnSe Focal Lens GaAs Focal Lens Mo Reflective Lens Si Reflective Lens
Diameter 12/15/18/19.05/20/25/25.4mm 12/15/18/19.05/20/25/25.4/28/38.1mm 18/19.05/20/25/25.4/28mm 20/25/30mm 20/25/30mm
Focal Length 25.4/38.1/50.8/63.5/76.2/101.6/127/190.5 mm 25.4/38.1/50.8/63.5/76.2/101.6/127/190.5 mm 50.8/63.5/76.2/101.6/127mm None None
Material China PVD ZnSe USA PVD ZnSe GaAs Molybdenum Silicon
Wavelength 10.6um 10.6um 10.6um 10.6μm 10.6μm
Power 30W-400W 30W-400W 100W-600W 40W-100W 60W-400W
Coating ✓ ✓ ✓ X ✓

How to clean CO2 laser lens?

Cleaning Step 1Cleaning Step 1

Cleaning Step 2Cleaning Step 2

Cleaning Step 3Cleaning Step 3

Step 1 - Cleaning for Light Contamination (dust, lint particles)

Use an air bulb to blow off any loose contaminants from the optic surface before proceeding to the cleaning steps.

Step 2 - Cleaning for Light Contamination (smudges, fingerprints)

Lay the lens tissue on the optics surface. Using an eyedropper, squeeze a few drops of acetone onto the lens tissue, wetting the complete optics diameter. Without lifting the lens tissue, drag the lens tissue across the optic just fast enough so that the liquid evaporates behind the tissue. This should leave no streaks.

Step 3 - Cleaning for Moderate Contamination (spittle, oils)

Dampen an unused cotton swab or cotton ball with white distilled vinegar. Using light pressure, wipe the optics surface with the damp cotton. Wipe excess distilled vinegar with a clean dry cotton swab. Immediately dampen a cotton swab or cotton ball with acetone. Gently wipe the optics surface to remove any acetic acid.