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SCHOTT Calibrated Neutral Density (ND) Filters

See More by SCHOTT Optical Components

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  • Calibrated for Specific Wavelengths
  • Optical Densities Ranging from 0.3 to 3.0
  • NG3, NG4, NG5, NG9, or NG11 Glass Types

SCHOTT Calibrated Neutral Density (ND) Filters are tested and calibrated to a precision optical density tolerance at either 405nm, or 633nm, or 785nm. Manufactured from NG3, NG4, NG5, NG9, or NG11 SCHOTT Glass, the filters are ideal for providing precise attenuation at common laser wavelengths. Available in optical densities ranging from 0.3 to 3.0, these filters can be integrated into a variety of optical systems and experiments. SCHOTT Calibrated Neutral Density (ND) Filters are available in a standard 50 x 50mm size and multiple filters can be stacked to achieve custom optical densities. The measured OD value for each filter at the specified wavelength is referenced on the box.

Note: Please contact us if your application requires a custom size SCHOTT Calibrated Neutral Density (ND) Filter.

Common Specifications

Dimensions (mm):
50.0 x 50.0 ±0.2
Clear Aperture CA (mm):
48.5 x 48.5
Parallelism (arcmin):
≤3
Edges:
Fine Grind
Bevel:
0.5 x 45°
Shape of Back Surface:
Plano
Coating:
Uncoated
Surface Quality:
60-40

Products

 Glass/Filter Number   Optical Density OD (Average)  DWL (nm)  Compare   Stock Number   Price  Buy
SCHOTT NG11 0.3 405 #21-366 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
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SCHOTT NG5 0.5 405 #21-367 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG4 1.0 405 #21-368 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG3 2.0 405 #21-369 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG3 3.0 405 #21-370 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG11 0.3 633 #21-371 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG5 0.5 633 #21-372 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG4 1.0 633 #21-373 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG3 2.0 633 #21-374 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG9 3.0 633 #21-375 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
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SCHOTT NG11 0.3 785 #21-376 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG5 0.5 785 #21-377 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
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SCHOTT NG4 1.0 785 #21-378 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG9 2.0 785 #21-379 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
SCHOTT NG9 3.0 785 #21-380 A$275.20 Qty 10+ A$246.40   Request Quote  
  • 3-5 days
    ×
 
Didn't find your exact size? Get an immediate quote for your specified size here.

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Quote Your Size

Please enter your required specifications here:
Glass Type
  • BG - Blue, blue-green, and multiband
  • GG - Colorless to yellow, IR transmitting
  • KG - Colorless glasses, high VIS transmission and IR absorption
  • NG - Neutral density glasses with uniform attenuation in VIS
  • OG - Orange glasses, IR transmitting
  • RG - Red and black glasses, blocking VIS, IR transmitting
  • UG - Black and blue glasses, UV transmitting
  • VG - Green glasses
  • WG - Colorless glasses w/ different UV cut-offs, transmitting in VIS and IR
Filter Number
Thickness (mm) Select 1, 2 or 3 mm.
For any other thicknesses, please contact our product support team
Shape If you require any other shape, please contact our product support team
Diameter (mm) Minimum: 5 mm, Maximum: 49 mm diameter.
Please contact product support to request any filters with different diameters
This size filter is outside of our standard range. Please contact us to discuss manufacturing feasibility and get a custom quote.
Length (mm) Minimum: 5 mm, Maximum: 49 mm.
Please contact product support to request filters with different dimensions
This size filter is outside of our standard range. Please contact us to discuss manufacturing feasibility and get a custom quote.
Width (mm) Minimum: 5 mm, Maximum: 49 mm.
Please contact product support to request filters with different dimensions
This size filter is outside of our standard range. Please contact us to discuss manufacturing feasibility and get a custom quote.
Quantity Maximum quantity 25 pcs.
For larger volumes, please contact our product support team
Typical 3-4 week delivery. Delivery date to be confirmed at time of order.
Standard Manufacturing Tolerances:
Edge length and diameter +/-0.2 mm
Thickness For ≤ 1mm: ± 0.1mm
For > 1 – 3mm: ± 0.2mm
Surface Quality 60 – 40
Surface Accuracy ≤8 Waves
Parallelism ≤3 arcmin
Clear Aperture ≥90%
Edges & Bevels Round parts ≥ ∅5mm: polished edges & protective bevel
Square & rectangular parts < 50 x 50mm: polished edges, no bevel
Edge Chips For ≤ ∅80mm: < 0.3mm (5/E0.3),
for ≥ ∅81mm < 0.6mm (5/E0.6)

Surface quality according to DIN ISO 10110:
Polishing quality P2
Defects 5/3 x 0.63
All edges machined
Round filters with chamfer max. 0.5mm, square and rectangular < 50x50mm without chamfer
Edge chips permitted up to 5/E0.3
General Information SCHOTT Optical Filter Glass:
BG Blue, blue-green, and multiband glasses
GG Nearly colorless to yellow glasses, IR transmitting
KG Virtually colorless glasses with high transmission in the visible and absorption in the IR
NG Neutral density glasses with uniform attenuation in the visible range
OG Orange glasses, IR transmitting
RG Red and black glasses, blocking visible, IR transmitting
UG Black and blue glasses, UV transmitting
VG Green glasses
WG Colorless glasses with different cut-offs in the UV, transmitting in the visible and IR ranges
Note: The spectral curves above show the internal transmittance of the individual optical filter glasses
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