VIS Metal coated Neutral Density Filter

These filters provide a very flat spectral response for applications ranging from VIS to NIR due to its substrate characteristics. They are widely used in spectral measurement, imaging optical system, machine vision system and optical output attenuation of low power laser.

Material:K9

Transmitted Wavefront error:λ/ 4 @ 633 nm

Parallelism:＜30 arcsec

Surface Quality:40-20

Dimensional Tolerance:＋0.0/-0.1mm

Thickness:2mm ±0.2mm

Applied Wavelength Range:400~1100nm

Optical Density Tolerance:±5% @550nm

CA:＞90%

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