Neutral Density Filters - Absorptive
Absorptive Schott glass Neutral Density filters are used to control the intensity of light and are stackable without resulting in multiple reflections. The ND glass absorbs the light within the filter. Each glass type is polished to required thickness and measured to produce the exact optical density and transmission. Custom or standard optical density’s and transmission can be produced to a particular wavelength. These filters have almost constant attenuation inside the visible spectrum.
Please contact our sales team.
Dimensions: | Diameters 5mm to 160mm |
Squares/Rectangles 1mm x 1mm to 165mm x 165mm | |
Thickness Range: | 0.50mm to 4.00mm (subject to dimension) |
Dimension/Thickness: | To 0.02mm |
Surface Quality: | 80/50 to 20/10 scratch/dig |
Surface Flatness: | Up to lambda 1 (@633nm) |
Parallelism: | Up to 1 arc min |
Transmission: | To within 1% |
Density: | To 0.02 |
Options: | Transmission curves 400-1100nm, absorbance curves 400-1100nm, calibration certificates, spot reading @ wavelengths, identification labels, storage boxes, mounts & holders Custom densities & transmission at different wavelengths eg. 71% T @ 589nm |
Please contact us for discount pricing for stock parts over 10+ and volume/OEM quantities.
Part numbers listed with enquire, please contact us for prices & delivery times.
Part No | Data sheet |
Description | Dimensions (mm) | Optical Density | Thickness (mm) | Transmission | Unit price (1-10) excl. VAT |
Qty |
Qty (10+)Volume pricing available for 10+, please add to quote. |
---|---|---|---|---|---|---|---|---|---|
FND-1200 | ND Filter KG1 | Ø 12.5 | 0.05 | 1 | 89% | £11.00 | |||
FND-1201 | ND Filter ND70 | Ø 12.5 | 0.1 | 2.40 | 79% | £11.00 | |||
FND-1250 | ND Filter ND50 | Ø 12.5 | 0.15 | 1.35 | 71% | £11.00 | |||
FND-1202 | ND Filter ND50 | Ø 12.5 | 0.2 | 1.80 | 63% | £11.00 | |||
FND-1203 | ND Filter NG11 | Ø 12.5 | 0.3 | 2.30 | 50% | £11.00 | |||
FND-1204 | ND Filter NG11 | Ø 12.5 | 0.4 | 3.30 | 40% | £11.00 | |||
FND-1205 | ND Filter ND25 | Ø 12.5 | 0.5 | 2.25 | 32% | £11.00 | |||
FND-1206 | ND Filter NG5 | Ø 12.5 | 0.6 | 2.30 | 25% | £11.00 | |||
FND-1207 | ND Filter NG5 | Ø 12.5 | 0.7 | 2.70 | 20% | £11.00 | |||
FND-1208 | ND Filter NG5 | Ø 12.5 | 0.8 | 3 | 16% | £11.00 | |||
FND-1209 | ND Filter NG5 | Ø 12.5 | 0.9 | 3.20 | 13% | £11.00 | |||
FND-1210 | ND Filter NG5 | Ø 12.5 | 1 | 3.90 | 10% | £11.00 | |||
FND-1213 | ND Filter NG4 | Ø 12.5 | 1.3 | 2.40 | 5% | £11.00 | |||
FND-1215 | ND Filter NG4 | Ø 12.5 | 1.5 | 2.90 | 3.20% | £11.00 | |||
FND-1220 | ND Filter NG4 | Ø 12.5 | 2 | 3.80 | 1% | £11.00 | |||
FND-1223 | ND Filter NG3 | Ø 12.5 | 2.3 | 2.20 | 0.50% | £11.00 | |||
FND-1230 | ND Filter NG3 | Ø 12.5 | 3 | 2.90 | 0.10% | £11.00 | |||
FND-1225 | ND Filter NG3 | Ø 12.5 | 2.5 | 2.40 | 0.32% | £11.00 | |||
FND-1240 | ND Filter NG3 | Ø 12.5 | 4 | 3.90 | 0.01% | £11.00 | |||
FND-2500 | ND Filter KG1 | Ø 25 | 0.05 | 1 | 89% | £19.00 | |||
FND-2501 | ND Filter ND70 | Ø 25 | 0.1 | 2.40 | 79% | £17.50 | |||
FND-2550 | ND Filter ND50 | Ø 25 | 0.15 | 1.35 | 71% | £17.50 | |||
FND-2502 | ND Filter ND50 | Ø 25 | 0.2 | 1.80 | 63% | £17.50 | |||
FND-2503 | ND Filter NG11 | Ø 25 | 0.3 | 2.30 | 50% | £17.50 | |||
FND-2504 | ND Filter NG11 | Ø 25 | 0.4 | 3.30 | 40% | £17.50 | |||
FND-2505 | ND Filter ND25 | Ø 25 | 0.5 | 2.25 | 32% | £17.50 | |||
FND-2506 | ND Filter NG5 | Ø 25 | 0.6 | 2.30 | 25% | £17.50 | |||
FND-2507 | ND Filter NG5 | Ø 25 | 0.7 | 2.70 | 20% | £17.50 | |||
FND-2508 | ND Filter NG5 | Ø 25 | 0.8 | 3 | 16% | £17.50 | |||
FND-2509 | ND Filter NG5 | Ø 25 | 0.9 | 3.20 | 13% | £17.50 | |||
FND-2510 | ND Filter NG5 | Ø 25 | 1 | 3.90 | 10% | £17.50 | |||
FND-2513 | ND Filter NG4 | Ø 25 | 1.3 | 2.40 | 5% | £17.50 | |||
FND-2515 | ND Filter NG4 | Ø 25 | 1.5 | 2.90 | 3.20% | £17.50 | |||
FND-2520 | ND Filter NG4 | Ø 25 | 2 | 3.80 | 1% | £17.50 | |||
FND-2523 | ND Filter NG3 | Ø 25 | 2.3 | 2.20 | 0.50% | £17.50 | |||
FND-2525 | ND Filter NG3 | Ø 25 | 2.5 | 2.40 | 0.32% | £17.50 | |||
FND-2530 | ND Filter NG3 | Ø 25 | 3 | 2.90 | 0.10% | £17.50 | |||
FND-2540 | ND Filter NG3 | Ø 25 | 4 | 3.90 | 0.01% | £17.50 | |||
FND-5000 | ND Filter KG1 | 50 x 50 | 0.05 | 1 | 89% | £37.00 | |||
FND-5001 | ND Filter ND70 | 50 x 50 | 0.1 | 2.40 | 79% | £37.00 | |||
FND-5050 | ND Filter ND50 | 50 x 50 | 0.15 | 1.35 | 71% | £37.00 | |||
FND-5002 | ND Filter ND50 | 50 x 50 | 0.2 | 1.80 | 63% | £37.00 | |||
FND-5003 | ND Filter NG11 | 50 x 50 | 0.3 | 2.30 | 50% | £37.00 | |||
FND-5004 | ND Filter NG11 | 50 x 50 | 0.4 | 3.30 | 40% | £37.00 | |||
FND-5005 | ND Filter ND25 | 50 x 50 | 0.5 | 2.25 | 32% | £37.00 | |||
FND-5006 | ND Filter NG5 | 50 x 50 | 0.6 | 2.30 | 25% | £37.00 | |||
FND-5007 | ND Filter NG5 | 50 x 50 | 0.7 | 2.70 | 20% | £37.00 | |||
FND-5008 | ND Filter NG5 | 50 x 50 | 0.8 | 3 | 16% | £37.00 | |||
FND-5009 | ND Filter NG5 | 50 x 50 | 0.9 | 3.20 | 13% | £37.00 | |||
FND-5010 | ND Filter NG5 | 50 x 50 | 1 | 3.90 | 10% | £37.00 | |||
FND-5013 | ND Filter NG4 | 50 x 50 | 1.3 | 2.40 | 5% | £37.00 | |||
FND-5015 | ND Filter NG4 | 50 x 50 | 1.5 | 2.90 | 3.20% | £37.00 | |||
FND-5020 | ND Filter NG4 | 50 x 50 | 2 | 3.80 | 1% | £37.00 | |||
FND-5023 | ND Filter NG3 | 50 x 50 | 2.3 | 2.20 | 0.50% | £37.00 | |||
FND-5025 | ND Filter NG3 | 50 x 50 | 2.5 | 2.40 | 0.32% | £37.00 | |||
FND-5030 | ND Filter NG3 | 50 x 50 | 3 | 2.90 | 0.10% | £37.00 | |||
FND-5040 | ND Filter NG3 | 50 x 50 | 4 | 3.90 | 0.01% | £37.00 |
Part Number
FND-1200
ND Filter KG1
PDF Data sheet
Thickness (mm) 1
Dimensions (mm) Ø 12.5
Optical Density 0.05
Transmission 89%
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1201
ND Filter ND70
PDF Data sheet
Thickness (mm) 2.40
Dimensions (mm) Ø 12.5
Optical Density 0.1
Transmission 79%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1250
ND Filter ND50
PDF Data sheet
Thickness (mm) 1.35
Dimensions (mm) Ø 12.5
Optical Density 0.15
Transmission 71%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1202
ND Filter ND50
PDF Data sheet
Thickness (mm) 1.80
Dimensions (mm) Ø 12.5
Optical Density 0.2
Transmission 63%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1203
ND Filter NG11
PDF Data sheet
Thickness (mm) 2.30
Dimensions (mm) Ø 12.5
Optical Density 0.3
Transmission 50%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1204
ND Filter NG11
PDF Data sheet
Thickness (mm) 3.30
Dimensions (mm) Ø 12.5
Optical Density 0.4
Transmission 40%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1205
ND Filter ND25
PDF Data sheet
Thickness (mm) 2.25
Dimensions (mm) Ø 12.5
Optical Density 0.5
Transmission 32%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1206
ND Filter NG5
PDF Data sheet
Thickness (mm) 2.30
Dimensions (mm) Ø 12.5
Optical Density 0.6
Transmission 25%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1207
ND Filter NG5
PDF Data sheet
Thickness (mm) 2.70
Dimensions (mm) Ø 12.5
Optical Density 0.7
Transmission 20%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1208
ND Filter NG5
PDF Data sheet
Thickness (mm) 3
Dimensions (mm) Ø 12.5
Optical Density 0.8
Transmission 16%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1209
ND Filter NG5
PDF Data sheet
Thickness (mm) 3.20
Dimensions (mm) Ø 12.5
Optical Density 0.9
Transmission 13%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1210
ND Filter NG5
PDF Data sheet
Thickness (mm) 3.90
Dimensions (mm) Ø 12.5
Optical Density 1
Transmission 10%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1213
ND Filter NG4
PDF Data sheet
Thickness (mm) 2.40
Dimensions (mm) Ø 12.5
Optical Density 1.3
Transmission 5%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1215
ND Filter NG4
PDF Data sheet
Thickness (mm) 2.90
Dimensions (mm) Ø 12.5
Optical Density 1.5
Transmission 3.20%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1220
ND Filter NG4
PDF Data sheet
Thickness (mm) 3.80
Dimensions (mm) Ø 12.5
Optical Density 2
Transmission 1%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1223
ND Filter NG3
PDF Data sheet
Thickness (mm) 2.20
Dimensions (mm) Ø 12.5
Optical Density 2.3
Transmission 0.50%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1230
ND Filter NG3
PDF Data sheet
Thickness (mm) 2.90
Dimensions (mm) Ø 12.5
Optical Density 3
Transmission 0.10%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1225
ND Filter NG3
PDF Data sheet
Thickness (mm) 2.40
Dimensions (mm) Ø 12.5
Optical Density 2.5
Transmission 0.32%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-1240
ND Filter NG3
PDF Data sheet
Thickness (mm) 3.90
Dimensions (mm) Ø 12.5
Optical Density 4
Transmission 0.01%
Focal Length (mm) 0
UNIT PRICE (1-10)
£11.00 Inc. VAT
Part Number
FND-2500
ND Filter KG1
PDF Data sheet
Thickness (mm) 1
Dimensions (mm) Ø 25
Optical Density 0.05
Transmission 89%
UNIT PRICE (1-10)
£19.00 Inc. VAT
Part Number
FND-2501
ND Filter ND70
PDF Data sheet
Thickness (mm) 2.40
Dimensions (mm) Ø 25
Optical Density 0.1
Transmission 79%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2550
ND Filter ND50
PDF Data sheet
Thickness (mm) 1.35
Dimensions (mm) Ø 25
Optical Density 0.15
Transmission 71%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2502
ND Filter ND50
PDF Data sheet
Thickness (mm) 1.80
Dimensions (mm) Ø 25
Optical Density 0.2
Transmission 63%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2503
ND Filter NG11
PDF Data sheet
Thickness (mm) 2.30
Dimensions (mm) Ø 25
Optical Density 0.3
Transmission 50%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2504
ND Filter NG11
PDF Data sheet
Thickness (mm) 3.30
Dimensions (mm) Ø 25
Optical Density 0.4
Transmission 40%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2505
ND Filter ND25
PDF Data sheet
Thickness (mm) 2.25
Dimensions (mm) Ø 25
Optical Density 0.5
Transmission 32%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2506
ND Filter NG5
PDF Data sheet
Thickness (mm) 2.30
Dimensions (mm) Ø 25
Optical Density 0.6
Transmission 25%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2507
ND Filter NG5
PDF Data sheet
Thickness (mm) 2.70
Dimensions (mm) Ø 25
Optical Density 0.7
Transmission 20%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2508
ND Filter NG5
PDF Data sheet
Thickness (mm) 3
Dimensions (mm) Ø 25
Optical Density 0.8
Transmission 16%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2509
ND Filter NG5
PDF Data sheet
Thickness (mm) 3.20
Dimensions (mm) Ø 25
Optical Density 0.9
Transmission 13%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2510
ND Filter NG5
PDF Data sheet
Thickness (mm) 3.90
Dimensions (mm) Ø 25
Optical Density 1
Transmission 10%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2513
ND Filter NG4
PDF Data sheet
Thickness (mm) 2.40
Dimensions (mm) Ø 25
Optical Density 1.3
Transmission 5%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2515
ND Filter NG4
PDF Data sheet
Thickness (mm) 2.90
Dimensions (mm) Ø 25
Optical Density 1.5
Transmission 3.20%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2520
ND Filter NG4
PDF Data sheet
Thickness (mm) 3.80
Dimensions (mm) Ø 25
Optical Density 2
Transmission 1%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2523
ND Filter NG3
PDF Data sheet
Thickness (mm) 2.20
Dimensions (mm) Ø 25
Optical Density 2.3
Transmission 0.50%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2525
ND Filter NG3
PDF Data sheet
Thickness (mm) 2.40
Dimensions (mm) Ø 25
Optical Density 2.5
Transmission 0.32%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2530
ND Filter NG3
PDF Data sheet
Thickness (mm) 2.90
Dimensions (mm) Ø 25
Optical Density 3
Transmission 0.10%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-2540
ND Filter NG3
PDF Data sheet
Thickness (mm) 3.90
Dimensions (mm) Ø 25
Optical Density 4
Transmission 0.01%
Focal Length (mm) 0
UNIT PRICE (1-10)
£17.50 Inc. VAT
Part Number
FND-5000
ND Filter KG1
PDF Data sheet
Thickness (mm) 1
Dimensions (mm) 50 x 50
Optical Density 0.05
Transmission 89%
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5001
ND Filter ND70
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.40
Optical Density 0.1
Transmission 79%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5050
ND Filter ND50
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 1.35
Optical Density 0.15
Transmission 71%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5002
ND Filter ND50
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 1.80
Optical Density 0.2
Transmission 63%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5003
ND Filter NG11
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.30
Optical Density 0.3
Transmission 50%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5004
ND Filter NG11
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 3.30
Optical Density 0.4
Transmission 40%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5005
ND Filter ND25
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.25
Optical Density 0.5
Transmission 32%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5006
ND Filter NG5
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.30
Optical Density 0.6
Transmission 25%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5007
ND Filter NG5
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.70
Optical Density 0.7
Transmission 20%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5008
ND Filter NG5
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 3
Optical Density 0.8
Transmission 16%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5009
ND Filter NG5
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 3.20
Optical Density 0.9
Transmission 13%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5010
ND Filter NG5
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 3.90
Optical Density 1
Transmission 10%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5013
ND Filter NG4
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.40
Optical Density 1.3
Transmission 5%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5015
ND Filter NG4
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.90
Optical Density 1.5
Transmission 3.20%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5020
ND Filter NG4
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 3.80
Optical Density 2
Transmission 1%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5023
ND Filter NG3
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.20
Optical Density 2.3
Transmission 0.50%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5025
ND Filter NG3
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.40
Optical Density 2.5
Transmission 0.32%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5030
ND Filter NG3
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 2.90
Optical Density 3
Transmission 0.10%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT
Part Number
FND-5040
ND Filter NG3
PDF Data sheet
Dimensions (mm) 50 x 50
Thickness (mm) 3.90
Optical Density 4
Transmission 0.01%
Focal Length (mm) 0
UNIT PRICE (1-10)
£37.00 Inc. VAT