High quality UV Metal coated Neutral Density (ND) Filter Φ12.5mm OD=0.4 | GU OPTICS
High quality UV Metal coated Neutral Density (ND) Filter Φ12.5mm OD=0.4

High quality UV Metal coated Neutral Density (ND) Filter Φ12.5mm OD=0.4

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Product No. 248503

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Dia Φ12.5mm
OD 0.4
Design Wavelength 300nm
Material UV-Fused-Silica
Transmitted Wavefront error λ/4 @ 633 nm
Parallelism <30arcsec
Surface Quality 20/10-40/20
Diameter Tolerance +0.0/-0.1mm
Thickness 2mm ±0.2mm
Applied Wavelength Range 200~1200nm
T 40%
Optical Density Tolerance ±5% @300nm
CA >90%
Optical Density(OD) OD= -log(T/100)
Different from reflective filters, absorptive neutral density filters use various neutral density optical glasses to offer a range of densities by controlling materials and thickness .These filters have low surface reflection and flat spectral response in the visible range. They can be widely used in spectral measurement, imaging optical systems, machine vision systems and optical output attenuation of low power lasers
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