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.

Description

Specifications

Ordering Info

Catalog/Manual

Download Data Sheet.

Item	ND1 / ND2 / ND3
Nominal ND (vis)	1 , 2, 3
Clear Aperture	ø19mm
Damage threshold	5W/cm² , 1J/cm² for ns pulses

Transmission vs. Wavelength

These "neutral density" or ND filters do not have a flat response in attenuation vs. wavelength. See the graph for typical transmission vs. wavelength characteristics.

Stackable filter showing wedge

Item	Description	P/N

ND1 stackable filter (red housing)	4mm spacing screw on filter for camera with transmission of between 20% and 5% depending on spectral range Can be stacked and combined with other filters and beam splitters.. One filter is included with Spiricon cameras	SPZ08234

ND2 stackable filter (black housing)	4mm spacing screw on filter for camera with transmission of between 7% and 0.5% depending on spectral range. Can be stacked and combined with other filters and beam splitters. Two filters are included with Spiricon cameras	SPZ08235

ND3 stackable filter (green housing)	4mm spacing screw on filter for camera with transmission of between 2% and 0.05% depending on spectral range. Can be stacked and combined with other filters and beam splitters	SPZ08253

Beam Profilers Catalog
82 pages (5.44 MB )