AFL25-40-U-U-285

The asphericon AFL25-40-U-U-285 is a standard asphere manufactured from fused silica which can be used both in the UV range as well as for laser applications with high power (> 1kW cw). This asphere combines the performance and quality of precision-polished lenses (RMS < 0.3 µm) with the cost advantages of mass production. Thanks to CNC polishing and grinding this aspheric lens meets the highest demands on production quality and tolerance.

Looking for this lens with ultra-precise surface qualities of up to RMSi < 0.015 µm? Request your individual offer now!
DownloadDesign-Files AFL25-4025.87 KB
DownloadCoating curves AFL25-401.11 MB
from 456,00 EUR
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AFL25-40-U-U-285

Technical data

Product Features

Material
Fused Silica
Diameter [mm]
25.0
Diameter tolerance [mm]
+0/-0.05
EFL [mm]
40.0
NA
0.29
f/d
1.6
Working distance WD [mm]
34.6
Design wavelength [nm]
285
RMSi [nm]
300
Wavefront RMS [nm]
≤ 140
Edge thickness Te [mm]
3.8
Center thickness Tc [mm]
8.0
Clear Aperture CA (col) [mm]
22.5
Clear Aperture CA (foc) [mm]
20.7
Surface Imperfections [Scratch/Dig]
20 - 20
Laser induced damage threshold
12 J/cm², 100 Hz, 6 ns, 532 nm
RoHS compliance
yes
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asphericon