Lens Specifications
Design Wavelength980 nmMagnification2.0
Numerical ApertureWindow Thickness0.25 mm
Clear Aperture4.12 mmLaser Window Material / IndexN-BK7/1.517
Effective Focal Length2.76 mmGlassD-ZLAF52LA
Working Distance Surface Quality40-20 Scratch-Dig(Entire Bulk Material)
355440-BAuto CAD PDFAuto CAD DXFSolidworkseDrawingStepZemax (ZAR)Zemax (ZMX)
C440TMD-BAuto CAD PDFAuto CAD DXFSolidworkseDrawingStepZemax (ZAR)Zemax (ZMX)

Vd number40.73
CTE (10-6 / °C)6.9
Thermo optic coefficient (10-6 / °C) (Δn/ΔT)6.5

Surface
R(mm)
k
A2
A4
A6
A8
A10
Side 1
-3.200655
-4.321649
0
-0.005521153
0.001981378
-4.782553E-4
7.328134E-5
Side 2
3.200655
-4.321649
0
0.005521153
-0.001981378
4.782553E-4
-7.328134E-5
Side 1 and Side 2 are labeled as ASP1 and ASP2, respectively, on the drawings shown on the Specifications tab.
zSAG as a Function of YA44th Order Aspheric Coefficient
RRadius of CurvatureA66th Order Aspheric Coefficient
kConic ConstantA88th Order Aspheric Coefficient
A22nd Order Aspheric CoefficientAnnth Order Aspheric Coefficient