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Products: Standard Filter Substrates

Standard Filter Substrates image

Acton’s filter substrates are made from select grades of the finest available optical materials.

Filter substrates are qualified for transmission requirements down to 120 nm.

Note: Filter substrates are available with transmittance traces for an additional charge. Contact us at [email protected] for more information.


Filter Substrates

Part Number Diameter Thickness Substrate Material
WFS-.5D (WCF-, WMF-) 0.5” (12.7mm) 0.079” (2mm) UV Fused Silica, CaF2, MgF2
WFS-1D (WCF-, WMF-) 1.0” (25.4mm) 0.098” (2.5mm) UV Fused Silica,CaF2, MgF2
WFS-1.5D (WCF-, WMF-) 1.5” (38.1mm) 0.200” (5mm) UV Fused Silica, CaF2, MgF2
WFS-2D (WCF-, WMF-) 2.0” (50.8mm) 0.157” (4mm) UV Fused Silica, CaF2, MgF2

NOTE: WFS= UV Fused Silica, WCF = CaF2, WMF = MgF2 | 2“ Diameter CaF2 and MgF2 Filter Substrates are 5mm Thick


Material Material: UV Laser Grade Fused Silica UV Grade Fused Silica, CaF2, MgF2
Diameter Tolerance +0.00/-0.005”
Thickness Tolerance +/-0.25mm
Surface Figure Both sides: < 2 Waves @ 632.8nm
Parallelism 3 arc min
Scratch/Dig 20-10
Chamfer 0.5mm x 45°
Clear Aperture Central 85%


UV fused silica transmission properties