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Optical Filters for Precise Wavelength Control

Discover unparalleled performance with Acton Optics' VUV/UV Narrowband Filters, meticulously crafted from the finest optical materials for diverse research and industrial applications. Each filter undergoes rigorous visual and optical inspections, guaranteeing impeccable quality and reliability. With individual transmittance curves ...

Specifications

Central Wavelength: 122 nm
Bandwidth (FWHM): 10 nm
Peak Transmittance: 5 %
Manufacturer: Acton Optics
Filter Material (Wavelength Range): < 140nm: VUV MgF2 | 140-169nm: VUV CaF2 | 170-320nm: UV Grade Fused Silica
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Data Sheet
The Bandpass Filter is a micro optics device based on environmentally stable thin film filter technology. It is used to block out unwanted noise signals in EDFAs and fiber laser systems. The components are characterized with high isolation, low insertion loss, high return loss, excellent environmental stability and high power ...

Specifications

Central Wavelength: 1550 nm
Bandwidth (FWHM): 2 nm
Peak Transmittance: ~ %
Max. Insertion Loss: 1.0 dB
Min. Extinction Ratio: 20 dB
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

Shape: Round, Square, Custom
Size: -- mm
Thickness: -- mm
Color Series: Colorless, VIS Tr, IR Abs
Certified Wavelengths: 440, 465, 546.1, 590, 635 nm
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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

Shape: Round, Square, Custom
Size: -- mm
Thickness: -- mm
Color Series: Black & Blue, UV Transmitting
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: Other
Shape: Square
Size: - mm
Optical Density: -
Certified Wavelengths: 329, 472, 512, 681, 875 nm
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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

Shape: Round, Square, Custom
Size: -- mm
Thickness: -- mm
Color Series: Colorless, VIS Tr, IR 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: 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
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Data Sheet
Band-pass filter is a kind of optic that can allow specific wavelength light pass and others reflect or cut off. It has many kinds of application like clinical medicine, environmental experiment, fluorescence etc. Besides, arc lamp or gas discharge lamp light can also be selected via band-pass filters. They’re also often used ...

Specifications

Central Wavelength: 193-1650 nm
Bandwidth (FWHM): 10±2 nm
Peak Transmittance: 10-70 %
Data Sheet
These 193-299nm Standard Bandpass Optical Filters are designed to transmit a specific band of energy in the electromagnetic spectrum. They offer an extensive range of wavelengths from ultraviolet to near-infrared, including the primary laser, mercury, biomedical, and analytical spectral lines.   Andover offers one of ...

Specifications

Central Wavelength: 193.0+2.5/-2.5 nm
Bandwidth (FWHM): 15.0+3.0/-3.0 nm
Peak Transmittance: 12 %
Blocking: 1x10-4 avg. X-Ray to FIR
Optical Quality: Commercial
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Data Sheet
These 500-599nm Standard Bandpass Optical Filters are designed to transmit a well-defined band of energy in the electromagnetic spectrum. These filters are available in a range of wavelengths from the ultraviolet through the near infrared, and they include many of the primary laser, mercury, biomedical, and analytical spectral ...

Specifications

Central Wavelength: 500 nm
Bandwidth (FWHM): 10 nm
Peak Transmittance: > 60 %
Diameter Tolerance: +0/-0.25 nm
Surface Quality: 80-50
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Data Sheet
The Dichroic Glass Filter is a color separation filter that isolates certain regions of the visible spectrum, reflecting unwanted frequencies instead of absorbing them.   Made with a hard dielectric film created by thin layers of metallic oxides, these filters are far more durable than dyed plastic or gel-coated types. ...

Specifications

Substrate: Other
Dichroic Type: Blue, Green, Red, UV, NIR, IR
Transmissivity (ave): -- %
Thickness: 1.0 mm
Substrate Material: Soda lime glass
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Data Sheet
Magnetron sputtered hard oxide coatings on precision polished Fused Silica substrates provide deep rejection and a sharp transition to very high transmission. Suitable for high-temperature applications. Offered in three standard sizes, with custom sizes available on request.

Specifications

Diameter: 12.5 mm
Thickness: 1.5 mm
Transmission Wavelength Range: 325-2000nm
Cut-On Wavelength: -- nm
Transmission: 91 %
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Data Sheet
Andover offers a variant of its standard UV optical bandpass filter that features all coatings on a single external surface and is sealed with a hard-oxide protective coating. These filters are coated on a single UV-Grade Fused Silica or UV Filter Glass substrate.

Specifications

Central Wavelength: 193 nm
Bandwidth (FWHM): 15 nm
Peak Transmittance: 12 %
Diameter Tolerance: +0/-0.25 mm
Surface Quality: 80-50
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Data Sheet
Our Hard-Coated Narrowband Filters are high-quality optical filters that employ magnetron sputtered, hard-oxide coatings deposited on Borosilicate Glass, providing a steep transition from high, peak transmission to OD4 blocking.   These filters are suitable for high-temperature applications and are available at ...

Specifications

Central Wavelength: 620 nm
Bandwidth (FWHM): 10 nm
Peak Transmittance: 90 %
Thickness: 5.0 mm
Minimum Clear Aperture: 21 mm
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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
Crysmit can provide various color glass filters or its substitutes. Here is a list of frequently used filters.

Specifications

Shape: Square
Size: 25.4 mm
Thickness: 6 mm
Color Series: Orange
Dimension Tolerance: 0+0/-0.2 mm
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Data Sheet
In addition to our standard Bandpass Filters for Biochemical Analytical and Fluorescence, Sherlan Optics also supplies other Bandpass filters from 400nm to 1100nm, and FWHM from 4nm to 100nm, Blocking >OD4 from X-ray to NIR. Sherlan Optics is able to offer the kinds of Band-pass Filter for your design.

Specifications

Central Wavelength: 532 nm
Bandwidth (FWHM): 30 nm
Peak Transmittance: 90 %
Material: BK7
Wavelength Range: 300-1100 nm
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Data Sheet
Knight Optical’s complete range of cost effective bandpass dichroic filters offer superior transmission, reflection and absorption characteristics.   Dichroic bandpass filters are designed to transmit highly over a specific limited bandwidth while reflecting all other wavelengths. Their design allowed them to isolate the ...

Specifications

Central Wavelength: 520 nm
Bandwidth (FWHM): 30 nm
Peak Transmittance: 95% %
Length: 50.0 mm
Width: 50.0 mm
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Data Sheet
Schott Standard Filters BG-3
GrayGlass
Schott Glass Products Blue-Green Filter.

Specifications

Shape: Custom
Size: -- mm
Thickness: -- mm
Color Series: Blue, Blue-Green, Multi-Band
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
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Data Sheet
We have many types of standard filters in stock, can send samples to you for test very fast.  Filters are used for selecting or filtrating the specific wave band, they are widely used in optical instrument. industrial measurement, environment protection and many other applications. We can provide short filter, long pass ...

Specifications

Central Wavelength: 475nm 505nm 515nm 650nm 850nm 950nm nm
Bandwidth (FWHM): 35 nm
Peak Transmittance: 95 %
Size: stock size is 80*80mm*1.1mm,can cut to your size
Data Sheet
Most electrical and electronic equipment generates and/or is affected by EMI. Sources are everywhere, including AC motors, fluorescent bulbs/ballasts, dimmers, microwave ovens, microprocessors, computers, and switch-mode power supplies. EMI power line filters are suitable for appliances, electronic equipment, power lines and other ...
Data Sheet

Frequently Asked Questions

Optical filters are used to selectively transmit or block certain wavelengths of light in optical systems. They are commonly used in research, industrial, and scientific fields to control the spectral content of light sources and to improve signal-to-noise ratios in imaging and sensing applications.

Some common types of optical filters include bandpass filters, longpass filters, shortpass filters, neutral density filters, dichroic filters, fluorescence filters, and color filters. Bandpass filters transmit a narrow range of wavelengths centered around a specific wavelength, while longpass filters transmit longer wavelengths and shortpass filters transmit shorter wavelengths. Neutral density filters attenuate light without affecting its spectral content, while dichroic filters selectively reflect or transmit certain wavelengths of light. Fluorescence filters are used to selectively excite fluorescent molecules, while color filters transmit only certain colors of light.

Choosing the right optical filter depends on factors such as the desired spectral range, bandwidth, transmission characteristics, and optical power handling capabilities. Consult with an optics expert or manufacturer to ensure that you choose the right filters for your application.

Yes, optical filters can be used in combination with other optical components such as lenses, mirrors, and prisms. They are often used in conjunction with these components to improve the performance of optical systems and to achieve specific experimental or imaging goals.

Narrowband filters are designed to transmit or block a narrow range of wavelengths, while broadband filters are designed to transmit or block a wider range of wavelengths. The choice of narrowband or broadband filters depends on the specific requirements of your application, including the spectral range of your light source and the desired transmission characteristics of the filter.

Our filters category offers a wide selection of optical filters designed for precise wavelength control and high optical performance. Whether you need bandpass filters, longpass filters, shortpass filters, neutral density filters, or other types of optical filters, we have you covered. Our filters are suitable for a variety of applications in research, industrial, and scientific fields. Explore our selection and find the right filters for your needs.

Did You know?

The first useful semiconductor laser was made by R.N. Hall in 1962 which was composed of GaAs materials that emitted in near infrared at 0.8 µm. The semiconductor laser is similar to transistor, has the appearance of a LED but the output beam has the characteristics of a laser. The application that was the main driving force in the development of semiconductor lasers was in the field of long distance communications but at this moment the use of this laser in compact disc players constitutes their largest single market. Using semiconductor laser gives an advantage of low power consumption requirements.