T (%)
Non-Reflective ND Filters
0.3 OD VIS 0.9 OD VIS
1.3 OD VIS 2.0 OD VIS
1.3 OD NIR 0.9 OD NIR
1.3 OD NIR 2.0 OD NIR
400 500 600 700 800 900 1000 1000 1200
80
60
40
20
0
(nm)
Infrared ND Filter Performance
0.3 Optical Density Filter
0.5 Optical Density Filter
2 4 6 8
100
90
80
70
60
50
40
30
20
10
Reflective Neutral Density (ND) Filters
Non-Reflective Neutral Density (ND) Filters
Non-Reflective Neutral Density (ND) Filters
Optical
Trans.
Density
(%)
Average
Reflection
(%)
12.5mm Diameter 25.0mm Diameter
VIS
Stock No.
NIR
Stock No.
0.3 50.0 ±5 ≤2.0 #63-376 #63-396 £80.75 £72.67
0.5 32.0 ±3 ≤2.0 #63-377 #63-397 £80.75 £72.67 #63-387 #63-407 £106.25 £95.63
0.6 25.0 ±3 ≤1.5 #63-378 #63-398 £80.75 £72.67 #63-388 #63-408 £106.25 £95.63
0.9 12.5 ±1 ≤1.5 #63-379 #63-399 £80.75 £72.67 #63-389 #63-409 £106.25 £95.63
1.0 10.0 ±1 ≤1.5 #63-380 #63-400 £80.75 £72.67 #63-390 #63-410 £106.25 £95.63
1.3 5.0 ±1 ≤1.5 #63-381 #63-401 £80.75 £72.67 #63-391 #63-411 £106.25 £95.63
1.5 3.2 ±1 ≤1.5 #63-382 #63-402 £80.75 £72.67 #63-392 #63-412 £106.25 £95.63
2.0 1.0 ±0.5 ≤1.5 #63-383 #63-403 £80.75 £72.67 #63-393 #63-413 £106.25 £95.63
2.5 0.3 ±0.15 ≤1.5 #63-384 #63-404 £80.75 £72.67 #63-394 #63-414 £106.25 £95.63
3.0 0.1 ±0.05 ≤1.5 #63-385 #63-405 £80.75 £72.67 #63-395 #63-415 £106.25 £95.63
Kit (Includes all 10 OD) #64-351 #64-473 £760.75 – – #64-352 #64-474 £845.75 – –
IR Neutral Density (ND) Filters
Price VIS
1-10 11-25 26+ 1-10 11-25 26+
Stock No.
NIR
Stock No.
Price
Call For OEM Qty. Pricing
#63-386 #63-406 £106.25 £95.63
Call For OEM Qty. Pricing
Shop www.edmundoptics.co.uk – latest pricing – availability – new products – over 34,000 items 169
bandpass filters
machine vision
neutral density
filters
edge filters dichroic filters notch filters color filters
filters
Substrate (μm): Germanium
Wavelength Range (μm): 2 - 14
Dimensional Tolerance (mm): ±0.2
Thickness (mm): 1.0 ±0.2
Parallelism (arcmin): <10
Surface Quality: 80-50
Surface Flatness (P-V): 3 - 5l per inch
Clear Aperture (%): 90
Coating: Metallic ND
• Maximum Accuracy & Neutrality at Moderate Price
• Spectrally Flat
• Use Stacks to Create Intermediate Density Values
These filters have constant density values across the surface.
The transmission to reflection ratio varies with density
selection.
In stacks, the total density is the sum of each filter’s density.
ND filters are used primarily
for the attenuation of light
over a wide spectral
range. They are often used in laser and photometer
applications,
where excessive
power can cause
damage
or inaccurate
results. Orient mirrored side toward source at 0° angle of incidence.
TECHSPEC® Reflective Neutral Density (ND) Filters
Optical Density Transmission (%) Reflection (%) 12.5mm Diameter 25mm Diameter 50 x 50mm
0.10 79 10 #64-125 #64-131 #64-137
0.15 70 12 #64-126 #64-132 #64-138
0.20 63 14 #64-127 #64-133 #64-139
0.30 50 21 #46-131 #30-933 #43-813
0.40 40 25 #64-128 #64-134 #64-140
0.50 32 30 #46-132 #30-934 #43-814
0.60 25 37 #49-071 #49-072 #49-073
0.70 20 42 #64-130 #64-136 #64-142
0.90 12.5 50 #49-074 #49-075 #49-076
1.00 10 45 #46-133 #30-935 #43-815
1.30 5.0 50 #46-134 #30-936 #46-123
1.50 3.2 55 #46-135 #30-937 #46-124
2.00 1.0 55 #46-136 #30-938 #43-816
2.50 0.3 55 #46-137 #43-811 #46-125
3.00 0.1 55 #46-138 #43-812 #46-126
Price: 1-10 £25.50 £38.25 £57.38
Price: 11-25 £22.95 £34.42 £51.64
Substrate: Float Glass
Wavelength Range (nm): 400 - 700n
Diameter Tolerance (mm): ±0.5
Thickness (mm): 1.6 nominal
Surface Quality:
80-50
Neutrality %: OD ≤ 0.2: ±2 Transmission
OD > 0.2: ±5 of Density
Clear Aperture (%): 80
Coating: First Surface Inconel
Reflective Filter Kits
Kit includes all optical densities except 3.0
12.5mm Dia. Kit #64-348 £318.75
25mm Dia. Kit #64-349 £420.75
50 x 50mm Kit #64-350 £637.50
• Prevent Unwanted Reflection Towards the Light Source
• Spectrally Flat
• VIS and NIR Ranges Available
Our Non-Reflective Neutral Density Filters are designed to evenly attenuate a light source while preventing unwanted
back reflections. A proprietary coating design minimizes reflection to less than 2%, while maintaining very high neutrality
over the entire design spectral range. Available for visible applications from 400 - 700nm or NIR applications
from 700 - 1200nm, the filters are ideal for limiting the transmission of broadband halogen, fluorescent, and tungsten
sources, as well as low power lasers. For OEM applications, the coating can be applied to a variety of substrate options.
Visit our website for Transmission and Reflection curves for all of our Non-Reflective ND Filters.
Substrate: B270
Wavelength Range (nm): VIS: 400 - 700, NIR: 700 - 1200
Diameter Tolerance (mm): ±0.10
Thickness (mm): 1.5 ±0.1
Parallelism (arcmin): <5
Surface Quality: 60-40
Surface Flatness (P-V): 2l
Clear Aperture (%): 90
Wavelength (μm)
Transmission (%)
10 12 14
0
1.0 Optical Density Filter
• Spectrally Flat from 2μm to 14μm
• Precision Germanium Substrate
Our IR Neutral Density Filters feature excellent linearity over a wide spectral band of 2μm to 14μm. Ideal for thermal
and medical imaging, the filters are available in a variety of densities and 2 size options. Kit includes optical densities
of 0.3, 0.5, 0.6, 0.9, 1.0, 1.3, 1.5, 2.0, and 3.0.
IR Neutral Density (ND) Filters Visit our website for AR Coated IR ND Filters
Optical
Trans.
12.5mm Diameter 25mm Diameter 50mm Diameter
Density
(%)
Stock No. Price Stock No. Price Stock No. Price
1-10 11-25 1-10 11-25 1-10 11-25
0.3 50.0 ±4.0 #12-003 £157.25 £141.53 #64-353 £297.50 £267.75 #64-358 £590.75 £531.67
0.5 31.6 ±2.0 #12-004 £157.25 £141.53 #64-354 £297.50 £267.75 #64-359 £590.75 £531.67
0.6 25.0 ±2.0 #12-005 £157.25 £141.53 #87-197 £297.50 £267.75 #87-201 £590.75 £531.67
0.7 20.0 ±2.0 #12-006 £157.25 £141.53 #12-000 £297.50 £267.75 N/A – £267.75
0.8 15.8 ±2.0 #12-007 £157.25 £141.53 #12-001 £297.50 £267.75 N/A – £267.75
0.9 12.6 ±1.5 #12-008 £157.25 £141.53 #87-198 £297.50 £267.75 #87-202 £590.75 £531.67
1.0 10.0 ±1.5 #12-009 £157.25 £141.53 #64-355 £297.50 £267.75 #64-360 £590.75 £531.67
1.3 5.0 ±1.3 #12-013 £157.25 £141.53 #87-199 £297.50 £267.75 #87-203 £590.75 £531.67
1.5 3.2 ±0.70 #12-014 £157.25 £141.53 #87-200 £297.50 £267.75 #87-204 £590.75 £531.67
2.0 1.00 ±0.25 #12-015 £157.25 £141.53 #64-356 £297.50 £267.75 #64-361 £590.75 £531.67
2.5 0.32 ±0.1 #12-016 £157.25 £141.53 #12-002 £297.50 £267.75 N/A – £267.75
3.0 0.10 +0.08/-0.05 #12-017 £157.25 £141.53 #64-357 £297.50 £267.75 #64-362 £590.75 £531.67
Kit (Includes 9 OD) #15-114 £1,402.50 - #87-205 £2,082.50 - #87-206 £4,245.75 -
/www.edmundoptics.co.uk
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