Absorptive Neutral Density (ND) Filter Φ25mm OD=0.4 | GU OPTICS

Absorptive Neutral Density (ND) Filter Φ25mm OD=0.4 | GU OPTICS

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Home  Products  Absorptive Neutral Density (ND) Filter  248584

Absorptive Neutral Density (ND) Filter Φ25mm OD=0.4

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Absorptive Neutral Density (ND) Filter Φ25mm OD=0.4

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Product No. 248584

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Parameters Spectrum Curve Related Products Description

Dia Φ25mm

OD 0.4

Design Wavelength -

Material Neutral-grey-glass

Transmitted Wavefront error λ/4 @ 633 nm

Parallelism ＜1arcmin

Surface Quality 60-40

Diameter Tolerance +0.0/-0.2mm

Thickness 1.36±0.5mm

Applied Wavelength Range 400~700nm

T 40%

Optical Density Tolerance ±5% @633nm

CA ＞90%

Optical Density(OD) OD= -log(T/100)

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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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