High quality UV Metal coated Neutral Density (ND) Filter Φ50mm OD=0.6
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Product No. 248527
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- Dia Φ50mm
- OD 0.6
- 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 25%
- 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
