SWIR Bandpass - 1.1um to 3.0um

Optical Filter Shop’s short-wave infrared (SWIR) bandpass filters accurately transmit specific SWIR spectral bands while selectively blocking out other signals. These multi-edge bandpass filters transmit nominal center wavelengths (CWL) and full-width half maximum (FWHM) bandwidths. Also known as interference or thin-film filters, our SWIR bandpass filters use multilayered hard coatings that deliver durable performance without aging or fading in high output light applications.

SWIR filters are perfect for many purposes that involve obscured vision, low light, human tissue, water absorption, vegetation and other materials. Several specific applications that use SWIR bandpass filters are:

• Multispectral imagers and photodiodes.
• Machine vision.
• Original equipment manufacturer (OEM) sensing and imaging.
• Scientific and biomedical instrumentation.
• Fiber optic measuring.
• Remote sensing.
• Security, surveillance and authentication.
• Emissions and greenhouse gas monitoring.

SWIR Bandpass Optical Filter Options

The SWIR bandpass filter range extends from 1.1-3.0 micrometers (um) or 1100-3000 nanometers (nm). This range is beyond human vision. Measurements are typically recognizable with mercury cadmium telluride (MCT) or indium gallium arsenide (InGaAs) detectors.

Optical Filter Shop offers more than 30 SWIR bandpass design options that block various signal ranges depending on the specific application. Several advantages of using our SWIR bandpass filters include:

• A self-blocking filter design with blocking range over the entire detector response.
• High transmittance in the passband.
• Superior spectral strength indoors and outdoors.
• Outstanding environmental stability.
• No fading or aging.
• Fully customizable features to meet OEM requirements.

At Optical Filter Shop, we construct our SWIR bandpass filters with the same high-quality materials and coatings as our ultraviolet, visible and near-infrared filters.

Shop Custom SWIR Bandpass Optical Filters

We can customize your SWIR bandpass filters to your exact specifications. The customization process can often be as simple as selecting the shape, size and type of filter you need. We also offer multiple coating options to enhance the performance or widen the range of your filter’s capabilities.

Customization options for our SWIR bandpass filters include:

• Multiple bandpass positions and widths.
• Various blocking levels and ranges.
• Collaborative engineering specific to your device.
• Multiple substrate, size and shape options.

Our SWIR bandpass filters can also pair with many other designs to improve or enhance their overall performance. In some cases, we’ll utilize various coatings on the same surface to optimize the filter’s size, weight and performance. Some filter examples that pair well with SWIR bandpass filters include:

• Anti-reflective coatings: Help maximize transmission by reducing reflections through refraction delta index.
• Emission filters: Enhance narrowband emission wavelengths to improve signal-to-noise ratio and contrast.
• Excitation filters: Adapt broadband illumination for specific narrowband excitation channels.
• Patterned bandpass filters: Improve filter arrays on application-specific imagers and photodiodes.
• Dichroic beamsplitters: Separate fluorescent wavelengths that are transmitting from emission wavelengths that are reflecting.

Contact Optical Filter Shop Today for Your SWIR Bandpass Filter Needs

In addition to our many filter options, Optical Filter Shop supplies reflectance standards, multispectral imaging devices, testers and optical flats. We can ship your order in as little as one day if your item is in stock. To learn more about our SWIR bandpass filters, services and large-volume discounts, contact us today.