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SCHOTT NG9, 2.0 OD, 50mm Sq., Absorptive ND Filter

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Stock #14-054 3-5 days
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A$148.80
Qty 1-10
A$148.80
Qty 11+
A$131.20
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Dimensions (mm):
50.0 x 50.0
Optical Density OD (Average):
2.0 ±0.07 @ 546nm
Glass/Filter Number:
Length (mm):
50.00
Coating:
Uncoated
Index of Refraction nd:
1.51
Surface Quality:
60-40
Transformation Temperature (°C):
470
Thickness (mm):
1.40
Thickness Tolerance (mm):
(nominal)
Transmission (%):
1.00 ±0.17% @ 546nm
Type:
Neutral Density Filter
Width (mm):
50.00
Parallelism (arcmin):
≤3
Dimensional Tolerance (mm):
±0.2
Wavelength Range (nm):
400 - 700

Regulatory Compliance

RoHS:
Reach 223:
Certificate of Conformance:

Product Family Description

  • Tightly Controlled Transmission Specifications
  • NG4, NG9, or NG11 Glass Types
  • Specified Optical Densities from 0.15 to 5.0
  • Provide Even Light Attenuation in the Visible Spectrum
  • SCHOTT NG Gray Glass Also Available

SCHOTT NG Absorptive Neutral Density (ND) Filters consist of NG4, NG9, or NG11 SCHOTT glass types and provide even light attenuation through absorption in the visible spectrum. These filters are manufactured to achieve a specified optical density, ranging from 0.15 to 5.0, to simplify integration into optical systems. SCHOTT NG Absorptive Neutral Density (ND) Filters are available in a standard 50 x 50mm size and multiple filters can be stacked to achieve custom optical densities. Custom sizes from 5 to 160mm as well as custom optical densities or transmission values for specific wavelengths are available on request; for more information, visit our Colored Glass Filter Manufacturing capabilities webpage. SCHOTT NG Gray Glass Filters are also available.

Each filter lot is measured and thickness is adjusted to meet the specified transmission value at 546nm. Each filter is then polished with a ±0.05mm thickness tolerance to guarantee consistent performance. Variations in filter lot performance can result in variations in nominal thickness; however, the transmission variations between lots will be minimal.

Filter Simulation Software

Click here to download SCHOTT’s colored glass filter calculation program which can be used to calculate the internal transmittance and external transmission of each SCHOTT glass type. The program can simulate the performance of individual filters with user specified thickness or of stacked filters with varying glass types and thicknesses.

Title CompareStock Number  Price Buy
12.5mm Dia., SCHOTT NG Absorptive ND Filter Kit (14 Filters) #15-094 A$424.00   Request Quote
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25mm Dia., SCHOTT NG Absorptive ND Filter Kit (14 Filters) #15-095 A$784.00   Request Quote
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50mm Sq., SCHOTT NG Absorptive ND Filter Kit (14 Filters) #15-096 A$1,680.00   Request Quote
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Filter

Understanding Neutral Density Filters

Neutral Density (ND) Filters are designed to evenly reduce transmission. For more information on specifications and products, read more at Edmund Optics.

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What is an ND Filter?

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What is the difference between using an absorptive ND filter and a reflective ND filter?

How should I orient my reflective ND or interference filter?

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Neutral Density Filter (ND)

Optical Filters

Do you want to learn about optical filters? Find terminology, fabrication techniques, a selection guide, and application examples at Edmund Optics.

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What types of filters can Edmund Optics® manufacture?

Filter

Optical Density (OD)

Stopband

Removing Protective Plastic Coating

A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.

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Transmission

How do I clean my optics?

Clear Aperture (CA)

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Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

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Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Learn about the metrology that Edmund Optics® uses to guarantee the quality of all optical components and assemblies.

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Surface Quality

Title  Type Compare Stock Number   Price  Buy
Spring Mount Filter Holder, Metric Fixed #55-531 A$128.00
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  • 3-5 days
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40mm Sq., Fixed Filter Holder Fixed #54-997 A$137.60
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  • 3-5 days
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60mm sq - Rectangular Bar Clamp Fixed #54-995 A$185.60
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  • 3-5 days
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Filter Kinematic Mount, 2-Screw Adjustable - Tip-Tilt #58-874 A$188.80
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  • 3-5 days
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Filter Kinematic Mount, 3-Screw Adjustable - Tip-Tilt #58-875 A$204.80
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  • 3-5 days
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50/50.8mm Sq. Kinematic Mount, 2 Screws Adjustable - Tip-Tilt #58-858 A$211.20
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  • 3-5 days
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50/50.8mm Sq. Kinematic Mount, 3 Screws Adjustable - Tip-Tilt #58-861 A$232.00
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  • 3-5 days
    ×
Please enter your required specifications here:
Filter Number
This size filter is outside of our standard range. Please contact us to discuss manufacturing feasibility and get a custom quote.
This size filter is outside of our standard range. Please contact us to discuss manufacturing feasibility and get a custom quote.
This size filter is outside of our standard range. Please contact us to discuss manufacturing feasibility and get a custom quote.
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