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Precision Anti-Reflection (AR) Coated Absorptive Neutral Density (ND) Filters

Precision Absorptive Neutral Density (ND) Filters

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Common Specifications

Clear Aperture (%):
90
Parallelism (arcsec):
<30
Substrate:
ND Filter Glass
Coating:
BBAR (450-700nm)
Surface Quality:
80-50
Blocking Wavelength Range (nm):
400 - 700
Transmitted Wavefront, P-V:
λ/4
Coating Specification:
Ravg ≤1.0% @ 450 - 700nm @ 0°

Products

Dia. (mm)  Dimensions (mm)   Glass/Filter Number   Optical Density OD (Average)   Thickness (mm)   Transmission (%)   Compare   Stock Number   Price  Buy
25.00 - SCHOTT NG12 0.1 4.95 79.43
- 50.00 x 50.00 SCHOTT NG12 0.1 4.95 79.43
25.00 - SCHOTT NG11 0.2 1.52 63.10
- 50.00 x 50.00 SCHOTT NG11 0.2 1.52 63.10
25.00 - SCHOTT NG11 0.3 2.84 50.12
- 50.00 x 50.00 SCHOTT NG11 0.3 2.84 50.12
25.00 - SCHOTT NG11 0.4 3.78 39.81
- 50.00 x 50.00 SCHOTT NG11 0.4 3.78 39.81
25.00 - SCHOTT NG5 0.5 2.11 31.62
- 50.00 x 50.00 SCHOTT NG5 0.5 2.11 31.62
25.00 - SCHOTT NG5 0.6 2.54 25.12
- 50.00 x 50.00 SCHOTT NG5 0.6 2.54 25.12
25.00 - SCHOTT NG5 0.7 2.95 19.95
- 50.00 x 50.00 SCHOTT NG5 0.7 2.95 19.95
25.00 - SCHOTT NG5 0.8 3.38 15.85
- 50.00 x 50.00 SCHOTT NG5 0.8 3.38 15.85
25.00 - SCHOTT NG4 0.9 1.75 12.59
- 50.00 x 50.00 SCHOTT NG4 0.9 1.75 12.59
25.00 - SCHOTT NG4 1.0 1.96 10.00
- 50.00 x 50.00 SCHOTT NG4 1.0 1.96 10.00
25.00 - SCHOTT NG4 1.5 2.90 3.16
- 50.00 x 50.00 SCHOTT NG4 1.5 2.90 3.16
25.00 - SCHOTT NG3 2.0 2.06 1.00
- 50.00 x 50.00 SCHOTT NG3 2.0 2.06 1.00
25.00 - SCHOTT NG3 2.5 2.44 0.32
- 50.00 x 50.00 SCHOTT NG3 2.5 2.44 0.32
25.00 - SCHOTT NG3 3.0 2.92 0.10
- 50.00 x 50.00 SCHOTT NG3 3.0 2.92 0.10
25.00 - SCHOTT NG9 4.0 2.82 0.01
- 50.00 x 50.00 SCHOTT NG9 4.0 2.82 0.01

Product Details

Precision Anti-Reflection (AR) Coated Absorptive Neutral Density (ND) Filters feature SCHOTT NG Colored Glass substrates that are polished to achieve a transmitted wavefront distortion (TWFD) specification of λ/4. These filters are coated on both surfaces with an anti-reflection (AR) coating from 450 - 700nm, reducing back reflections and enabling filter stacking with less losses and artifacts. Precision Anti-Reflection (AR) Coated Absorptive Neutral Density (ND) Filters are available with optical densities from 0.1 to 4.0 and can be stacked together to achieve custom optical densities to meet application requirements. These neutral density filters are available in 25mm diameter or 50mm square sizes and are ideal for machine vision, imaging, or low power laser applications.

Technical Information