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This series of absorbing glass neutral density filters is offered in small increments from D=0.1 up to D=4. The thickness of the filters is controlled to produce a calibrated optical density at 546 nm. The response is approximately neutral so they can be used as broad band devices. However, if used at other wavelengths the optical ...
  • Attenuator Type: Absorptive
  • Shape: Round, Square
  • Size: 25.4 mm
  • Optical Density: 0.1 
Data Sheet
Material B270 Glass Dimension Tolerance +0.0/-0.2mm Thickness 1.5±0.2mm Flatness <2λ@632.8nm Surface Quality 60/40 scratch and dig Parallelism <3 arc minutes Clear Aperture >90% Design Wavelength 400-700nm Coating Metallic reflective coating OD Tolerance ±5% of OD Extremes
  • Attenuator Type: Other
  • Shape: Round, Square, Custom
  • Size: 50 mm
  • Optical Density: 0-3 
Data Sheet
Material B270 Glass Dimension Tolerance +0.0/-0.2mm Thickness 2.0±0.2mm Flatness 2λ@632.8nm Surface Quality 80/50 scratch and dig Parallelism <5 arc minutes Clear Aperture >90% Design Wavelength 400-700nm Coating Metallic reflective coating OD Tolerance ±10% of OD
  • Attenuator Type: Reflective
  • Shape: Round, Square, Custom
  • Size: 25.4 mm
  • Optical Density: 0.1-3 
Data Sheet
Material Absorptive Glass Dimension Tolerance +0.0/-0.2mm Thickness Tolerance ±0.2mm Flatness 2λ@632.8nm Surface Quality 80/50 scratch and dig Parallelism Clear Aperture >90% Design Wavelength 400-700nm OD Tolerance ±10% of OD  
  • Attenuator Type: Absorptive
  • Shape: Custom, Square, Round
  • Size: 25.4 mm
  • Optical Density: 0.1-3 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 4.0 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50x50 mm
  • Optical Density: 0.1 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 2.5 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 2.0 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 1.5 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 1.0 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.8 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.6 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.5 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.4 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.3 
Data Sheet
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.2 
Data Sheet
Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types.  Gelatine neutral density filters work by absorption ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 0.1 
Data Sheet
Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types.  Gelatine neutral density filters work by absorption ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 3.0 
Data Sheet
Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types.  Gelatine neutral density filters work by absorption ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 4.0 
Data Sheet
Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types.  Gelatine neutral density filters work by absorption ...
  • Attenuator Type: Absorptive
  • Shape: Square
  • Size: 50 mm
  • Optical Density: 2.0 
Data Sheet

Did You know?

Neutral density filters are optical attenuators which have an approximately constant degree of attenuation (filter loss) in a substantial wavelength range. Attenuation is accomplished by either absorption using light absorbing glass or by a combination of absorption and reflection using a thin-film metal coating. The level of attenuation can be specified from optical density (OD) 0.04 to 4.0 where OD is defined as -log10 (T). By placing several neutral density filters from a large filter kit in series, one can realize many different degrees of total attenuation. A continuous adjustment of absorbance is possible with a rotatable neutral density filter wheel.