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Neutral Density Filters

Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. Hellma Analytics' certified reference materials can be used to test the following parameters easily and ...

Specifications

Attenuator Type: Other
Shape: Square
Size: - mm
Optical Density: -
Certified Wavelengths: 329, 472, 512, 681, 875 nm
...
Data Sheet
Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. Hellma Analytics' certified reference materials can be used to test the following parameters easily and ...

Specifications

Attenuator Type: Absorptive
Shape: Square
Size: - mm
Optical Density: 0.3, 1.5, 2.0 Abs
Certified Wavelengths: 440, 465, 546.1, 590, 635 nm
...
Data Sheet
Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. Hellma Analytics\' certified reference materials can be used to test the following parameters easily and ...

Specifications

Attenuator Type: Absorptive
Shape: Square
Size: - mm
Optical Density: 0.25, 0.5, 1.0, F7 0.5-1.0
Certified Wavelengths: 279, 361, 453, 536, 638 nm
...
Data Sheet
Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. Hellma Analytics\' certified reference materials can be used to test the following parameters easily and ...

Specifications

Attenuator Type: Absorptive
Shape: Square
Size: - mm
Optical Density: 0.25, 0.5, 1.0 Abs
Certified Wavelengths: 279, 361, 453, 536, 638 nm
...
Data Sheet
Quality assurance and quality control regulations, such as ISO 9000, GLP, GMP and pharmacopoeias, require companies to verify that any spectrophotometers in use are performing at a consistently high level. Hellma Analytics' certified reference materials can be used to test the following parameters easily and ...

Specifications

Attenuator Type: Other
Shape: Square
Size: - mm
Optical Density: -
Certified Wavelengths: 270, 280, 297, 321, 342 nm
...
Data Sheet
The Andover Corporation Metallic Neutral Density Filters UV-VIS-NIR are a type of absorptive neutral density (ND) filter that are ideal for a range of applications such as calibration, attenuation, low-power lasers, scientific measurements and research, machine vision, and other imaging applications.    These filters ...

Specifications

Attenuator Type: Other
Shape: Round, Square, Custom
Size: 12.5 mm
Optical Density: 0.4
Nominal Transmission: 91.0 %
Data Sheet
These are Neutral Density Filters (Absorptive type). They are made of absorptive glass and feature 80/50 scratch/dig quality.  Please contact us for details and ordering info.

Specifications

Attenuator Type: Absorptive
Shape: Round, Square, Custom
Size: 25.4 mm
Optical Density: 0.1-3
Design Wavelength: 400 - 700 nm
...
Data Sheet
The Circular Variable Neutral Density filters (IR) are a filter wheel to linearly attenuate light as the filter is rotated. The CVND (IR) can be used for white light as well as for lasers. A large finite aperture can be attenuated by counter rotating to filters in series. Sizes are available from 25mm to over 200mm in ...

Specifications

Attenuator Type: Absorptive
Shape: Round, Custom
Size: 25 - 200 mm
Optical Density: 0 to 1, 2, 3, 4 or 5
Anti-Reflection Coating: Available
...
Data Sheet
The Circular Variable Neutral Density filters (UV) are a filter wheel to linearly attenuate light as the filter is rotated. The CVND (UV) can be used for white light as well as for lasers. A large finite aperture can be attenuated by counter rotating to filters in series. Sizes are available from 25mm to over 200mm ...

Specifications

Attenuator Type: Absorptive
Shape: Round, Custom
Size: 25 - 200 mm
Optical Density: 1
Anti-Reflection Coating: Available
...
Data Sheet
The Circular Variable Neutral Density filters (VIS) are a filter wheel to linearly attenuate light as the filter is rotated. The CVND (VIS) can be used for white light as well as for lasers. A large finite aperture can be attenuated by counter rotating to filters in series. Sizes are available from 25mm to over 200mm in ...

Specifications

Attenuator Type: Absorptive
Shape: Round, Custom
Size: 25-200 mm
Optical Density: 0 to 1, 2, 3, 4 or 5
Clear Aperture: 80% of Diameter
...
Data Sheet
Circular Variable Filter 900 nm – 1350 nm
Delta Optical Thin Film A/S
CI Systems’ Circular Variable Filters (CVF’s) are interference narrow-pass filters of advanced design which are deposited on circular substrates, called segments. Film thickness, and therefore the wavelength of peak transmittance varies linearly and continuously with angular position on the segment. CI Systems CVF’s are ideally ...

Specifications

Attenuator Type: Absorptive, Reflective
Shape: Round
Size: 2 mm
Optical Density: --
Data Sheet
Circular Variable Filter 7700 nm – 14300 nm
Delta Optical Thin Film A/S
CI Systems’ Circular Variable Filters (CVF’s) are interference narrow-pass filters of advanced design which are deposited on circular substrates, called segments. Film thickness, and therefore the wavelength of peak transmittance varies linearly and continuously with angular position on the segment. CI Systems CVF’s ...

Specifications

Attenuator Type: Absorptive, Reflective
Shape: Round
Size: 2 mm
Optical Density: --
Data Sheet
Circular Variable Filter 4300 nm – 8100 nm
Delta Optical Thin Film A/S
CI Systems’ Circular Variable Filters (CVF’s) are interference narrow-pass filters of advanced design which are deposited on circular substrates, called segments. Film thickness, and therefore the wavelength of peak transmittance varies linearly and continuously with angular position on the segment. CI Systems CVF’s ...

Specifications

Attenuator Type: Absorptive, Reflective
Shape: Round
Size: 2 mm
Optical Density: --
Data Sheet
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 ...

Specifications

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

Specifications

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

Specifications

Attenuator Type: Reflective
Shape: Round, Square, Custom
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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

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 ...

Specifications

Attenuator Type: Absorptive
Shape: Square
Size: 50 mm
Optical Density: 0.4
Data Sheet
There are 30 different Neutral Density Filters from suppliers and manufacturers listed in this category. In just a few clicks you can compare different Neutral Density Filters with each other and get an accurate quote based on your needs and specifications. Please note that the prices of Neutral Density Filters vary significantly for different products based on various factors including technical parameters, features, brand name, etc. Please contact suppliers directly to inquire about the details and accurate pricing information for any product model. Simply navigate to the product page of interest and use the orange button to directly reach out to the respective supplier with one click.

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.