VIS Metal coated Neutral Density Filter 50x50mm OD=0.7 | GU OPTICS
VIS Metal coated Neutral Density Filter 50x50mm OD=0.7

VIS Metal coated Neutral Density Filter 50x50mm OD=0.7

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Product No. 248561

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Dia 50x50mm
OD 0.7
Design Wavelength 550nm
Material B270
Transmitted Wavefront error λ/4 @ 633 nm
Parallelism <30arcsec
Surface Quality 40/20-60/40
Diameter Tolerance +0.0/-0.2mm
Thickness 2mm ±0.2mm
Applied Wavelength Range 400~1100nm
T 20%
Optical Density Tolerance ±5% @550nm
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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