IR Collimating Lenses

Parameter Typical Tolerance
Focal Length± 1%
Center Thickness (CT)± 0.025mm
Outer Diameter (OD)± 0.015mm
Wedge (arcmin)4
Power/Irregularity (fringes)3/1
Surface Roughness15nm
Surface Quality (scratch/dig)40/20
RMS WFEDiffraction Limited