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Square Neutral Density Filters

Dual Band Infrared Bandpass Filters
Reynard Corporation
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Dual Band Infrared Bandpass Filters
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Reynard dual-band infrared (IR) bandpass optical filters provide high in-band transmission in both the MWIR (mid-wave, 3-5μm range) and the LWIR (long-wave, 7.5-13.5μm range) simultaneously, while providing high out-of-band (OOB) rejection. In-band transmission levels above 90% have been demonstrated on multiple substrate ...

Specifications
Attenuator Type: Absorptive, Reflective, Other
Shape: Round, Square, Custom
Size: Custom mm
Optical Density: Specify
Material: Ge, InAs, ZnS, ZnSe and others
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Bullseye® Apodizing Optical Filters
Reynard Corporation
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Bullseye® Apodizing Optical Filters
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Reynard Corporation offers Bullseye® Apodizing optical filters used to eliminate undesirable intensity variations in optical systems. There are two types: Dark Center: The normal Bullseye® Apodizing configuration decreases in density radially from a dark center, where light is usually at its peak intensity, to the outside ...

Specifications
Attenuator Type: Other
Shape: Round, Square, Custom
Size: 25 to 50 ± 0.2 mm
Optical Density: 1-5, Specify
Substrate Material: N-BK7
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Linear Apodizing Filters
Reynard Corporation
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Linear Apodizing Filters
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Linear Apodizing optical filters are customizable density gradient filters that have constant density in one direction and variable neutral density (ND) filter in the other direction. These linear apodizing optical filters are used to eliminate undesirable intensity variations in optical systems. There are two basic types of linear ...

Specifications
Attenuator Type: Other
Shape: Round, Square, Custom
Size: 25 - 125 mm
Optical Density: 1-5, Specify
Substrate Materials:: N-BK7 or equivalent
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CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7
Hellma USA INC
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CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7
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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
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CRM NEUTRAL DENSITY GLASS FILTER SET WITH DAKKS CERTIFICATE 666-S004
Hellma USA INC
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CRM NEUTRAL DENSITY GLASS FILTER SET WITH DAKKS CERTIFICATE 666-S004
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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
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CRM NEUTRAL DENSITY GLASS FILTER SET WITH DAKKS CERTIFICATE 666-S003
Hellma USA INC
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CRM NEUTRAL DENSITY GLASS FILTER SET WITH DAKKS CERTIFICATE 666-S003
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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
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CRM NEUTRAL DENSITY GLASS FILTER SET WITH DAKKS CERTIFICATE 666-S000
Hellma USA INC
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CRM NEUTRAL DENSITY GLASS FILTER SET WITH DAKKS CERTIFICATE 666-S000
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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
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CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7A
Hellma USA INC
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CRM DIDYMIUM GLASS FILTER WITH DAKKS CERTIFICATE 666-F7A
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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
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Andover Corporation Metallic Neutral Density Filters UV-VIS-NIR
Andover Corporation
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Andover Corporation Metallic Neutral Density Filters UV-VIS-NIR
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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 %
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Neutral Density Filter-Absorptive
Union Optic
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Neutral Density Filter-Absorptive
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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
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25.4 mm Absorptive ND Filter Optical Density - 0.1
Ealing Catalog
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25.4 mm Absorptive ND Filter Optical Density - 0.1
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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 ...

Specifications
Attenuator Type: Absorptive
Shape: Round, Square
Size: 25.4 mm
Optical Density: 0.1
Data Sheet
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Variable Neutral Density Filter
Union Optic
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Variable Neutral Density Filter
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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
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Neutral Density Filter-Reflective
Union Optic
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Neutral Density Filter-Reflective
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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
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FNG4050 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG4050 - Absorptive Glass Neutral Density Filters
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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
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FNG3050 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG3050 - Absorptive Glass Neutral Density Filters
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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
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FNG2550 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG2550 - Absorptive Glass Neutral Density Filters
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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
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FNG2050 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG2050 - Absorptive Glass Neutral Density Filters
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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
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FNG1550 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG1550 - Absorptive Glass Neutral Density Filters
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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
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FNG0850 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG0850 - Absorptive Glass Neutral Density Filters
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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
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FNG0650 - Absorptive Glass Neutral Density Filters
Knight Optical (UK) Ltd
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FNG0650 - Absorptive Glass Neutral Density Filters
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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
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On FindLight marketplace you will find 27 different Square Neutral Density Filters from suppliers around the world. With just a few clicks you can compare different Square Neutral Density Filters and get accurate price quotes based on your needs and quantity required. Note that some wholesale suppliers may offer discounts for large quantities. From any product page you can directly contact any vendor within seconds.