Absorptive Neutral Density Filters UV-VIS-NIR

With their ability to minimize back-reflections and scattered light, absorptive neutral density (ND) filters are ideal for calibration. In contrast to the metallic type, absorption-type filters achieve their optical density by absorbing light within the substrate. For this reason, thickness is a key determinant of opacity.  Because of their absorbing quality, these filters are suitable for low-power applications only.

Andover's absorbing ND filters are unique in that they are AR coated to reduce surface reflections. This enables them to be stacked without concern about losses and artifacts due to multiple reflections.

Please note that all of our Absorbing ND filters are also available in sets, which include a hardwood storage box.

GENERAL SPECIFICATIONS

Thickness:5.0mm (maximum)
Dimensional Tolerance: +0.0/-0.25mm
Clear Aperture:90% of outside dimension
Surface Quality:80/50 per MIL-0-13830B
Max. Operating Temperature:+100°C
Substrate Material:Schott absorption glass
Spectral Range:400–700nm
Optical Quality:Flatness of λ/4 per inch and parallelism of 30 arc seconds or better
Mechanical:Unmounted
DESCRIPTION PART NO. 1-5 pcs. >5 pcs. QTY IN STOCK QTY
+ 0.1 OD, 79.43% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 010ABND-25 $57 $54 9
%T (Optical Density) 79.43 (0.1 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 4.95 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.1 OD, 79.43% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 010ABND-50S $100 $95 4
%T (Optical Density) 79.43 (0.1 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 4.95 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.2 OD, 63.10% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 020ABND-25 $57 $54 5
%T (Optical Density) 63.10 (0.2 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 1.52 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.2 OD, 63.10% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 020ABND-50S $100 $95 5
%T (Optical Density) 63.10 (0.2 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 1.52 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.3 OD, 50.12% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 030ABND-25 $57 $54 3
%T (Optical Density) 50.12 (0.3 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.84 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.3 OD, 50.12% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 030ABND-50S $100 $95 5
%T (Optical Density) 50.12 (0.3 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.84 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.4 OD, 39.81% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 040ABND-25 $57 $54 14
%T (Optical Density) 39.81 (0.4 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 3.78 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.4 OD, 39.81% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 040ABND-50S $100 $95 3
%T (Optical Density) 39.81 (0.4 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 3.78 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.5 OD, 31.62% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 050ABND-25 $57 $54 73
%T (Optical Density) 31.62 (0.5 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.11 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.5 OD, 31.62% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 050ABND-50S $100 $95 4
%T (Optical Density) 31.62 (0.5 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.11 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.6 OD, 25.12% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 060ABND-25 $57 $54 47
%T (Optical Density) 25.12 (0.6 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.54 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.6 OD, 25.12% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 060ABND-50S $100 $95 2
%T (Optical Density) 25.12 (0.6 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.54 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.7 OD, 19.95% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 070ABND-25 $57 $54 34
%T (Optical Density) 19.95 (0.7 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.95 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.7 OD, 19.95% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 070ABND-50S $100 $95 1
%T (Optical Density) 19.95 (0.7 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.95 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.8 OD, 15.85% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 080ABND-25 $57 $54 26
%T (Optical Density) 15.85 (0.8 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 3.38 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.8 OD, 15.85% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 080ABND-50S $100 $95 9
%T (Optical Density) 15.85 (0.8 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 3.38 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.9 OD, 12.59% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 090ABND-25 $57 $54 3
%T (Optical Density) 12.59 (0.9 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 1.75 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 0.9 OD, 12.59% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 090ABND-50S $100 $95 2
%T (Optical Density) 12.59 (0.9 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 1.75 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 1.0 OD, 10.00% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 100ABND-25 $57 $54 28
%T (Optical Density) 10.00 (1.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 1.96 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 1.0 OD, 10.00% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 100ABND-50S $100 $95 2
%T (Optical Density) 10.00 (1.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 1.96 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 1.5 OD, 3.16% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 150ABND-25 $57 $54 69
%T (Optical Density) 3.16 (1.5 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.90 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 1.5 OD, 3.16% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 150ABND-50S $100 $95 3
%T (Optical Density) 3.16 (1.5 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.90 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 2.0 OD, 1.00% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 200ABND-25 $57 $54 17
%T (Optical Density) 1.00 (2.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.06 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 2.0 OD, 1.00% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 200ABND-50S $100 $95 5
%T (Optical Density) 1.00 (2.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.06 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 3.0 OD, 0.10% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 300ABND-25 $57 $54 122
%T (Optical Density) 0.10 (3.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.92 +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 3.0 OD, 0.10% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 300ABND-50S $100 $95 3
%T (Optical Density) 0.10 (3.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.92 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 4.0 OD, 0.01% transmission, 25.0 mm Unmounted, Absorptive Neutral Density Filter 400ABND-25 $57 $54 14
%T (Optical Density) 0.01 (4.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 25.0 mm diameter
Thickness 2.82mm +nom/-nom mm
QtyPrice
1-5 $57
6+ $54
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.
+ 4.0 OD, 0.01% transmission, 50.0 x 50.0mm Unmounted, Absorptive Neutral Density Filter 400ABND-50S $100 $95 1
%T (Optical Density) 0.01 (4.0 OD)
Specifications ±10% of the Optical Density @ 550nm
Substrate Material Absorbing Filter Glass
Size 50.0 x 50.0 mm square
Thickness 2.82 +nom/-nom mm
QtyPrice
1-5 $100
6+ $95
Estimated delivery: 1-2 days.
Note: Always free ground shipping on all domestic orders.