Visible light optical filter ND series

greenredneutral-density

Laser Beam Attenuation with Stackable Bulk Absorption Filtration Description: The individual filters come in three versions, the ND1 filter in the red housing with ~10% transmission in the visible, the ND2 filter in the black housing with ~1% transmission and the ND3 filter in the green housing with ~0.1% transmission. The individual filters can be screwed on top of each other and thus stacked. They are set at a small wedge angle in the housing so as not to cause interference effects. Specification Recommended Wavelengths: 400nm - 2200nm Nominal ND: 1,2,3 Interface: C-mount Damage Threshold: 5W/cm² , 1J/cm² for ns pulses Clear Aperture: ø19mm