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F-theta Scanning Lenses for CO2 laser (Single Element & Un-mounted) 

  • Commonly used in laser marking, engraving & cutting applications with galvonometer scanning (Si) mirrors.

  • Input beam diameter up to 15.0mm

  • Minimize aberration & best f-theta characteristics as s single element lens.

Specifications:

Material:

High quality ZnSe CVD

Surface Flatness:

λ / 20 @ 10.6 μm

Surface Quality:

20/10 (both sides)

Centration Error:

<= 3 arc min

Focal Length Tolerance:

 +/-  0.5% @ 10.6 μm

Diameter:

48.0mm + 0/ - 0.20mm

Edge Thickness:

3.0mm +/-  0.25mm

Clear Aperture:

> = 85% of diameter

Durability:

Per MIL-M-13508

All F-theta lenses are available with ValuMax coating.

Coating (total absorption: < 0.20% with T>99.5%)
S1: ValuMax AR R<0.25% @ 10.6µm, 0deg
S2: ValuMax AR R<0.25% @ 10.6µm, 0deg

 Part Number Diameter
(mm)		 Focal Length
(mm) @ 10.6µm		 Field Size (mm) Focused Beam Diameter (µm)*
VM2-FM-48.0Z-100-10.6  48.0 100 70mm x 70mm 165
VM2-FM-48.0Z-150-10.6 48.0 150 105mm x 105mm 240
VM2-FM-48.0Z-200-10.6 48.0 200 140mm x 140mm 320
VM2-FM-48.0Z-300-10.6 48.0 300 210mm x 210mm 480

* when input beam diameter  = 12.0mm

For more information, please contact the Lambda's sales team.