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  • Si 25mm Bandpass Filter CWL 4.0um/BW 2.0um

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  • Ge 50mm Bandpass Filter CWL 10.6um/BW 1.5um

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  • Ge 25mm Bandpass Filter CWL 10um/BW 4.0um

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  • Ge 50mm Neutral Density Filter OD=3.0, 0.1%T

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  • Ge 25mm Neutral Density Filter OD=3.0, 0.1%T

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  • Ge 50mm Neutral Density Filter OD=2.5, 0.32%T

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  • Ge 25mm Neutral Density Filter OD=2.5, 0.32%T

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  • Ge 50mm Neutral Density Filter OD=2.0, 1%T

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  • Ge 25mm Neutral Density Filter OD=2.0, 1%T

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  • Ge 50mm Neutral Density Filter OD=1.5, 3.2%T

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  • Ge 25mm Neutral Density Filter OD=1.5, 3.2%T

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  • Ge 50mm Neutral Density Filter OD=1.3, 5%T

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  • Ge 25mm Neutral Density Filter OD=1.3, 5%T

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  • Ge 50mm Neutral Density Filter OD=1.0, 10%T

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  • Ge 25mm Neutral Density Filter OD=1.0, 10%T

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  • Ge 50mm Neutral Density Filter OD=0.9, 12.6%T

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  • Ge 25mm Neutral Density Filter OD=0.9, 12.6%T

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  • Ge 50mm Neutral Density Filter OD=0.8, 15.8%T

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  • Ge 25mm Neutral Density Filter OD=0.8, 15.8%T

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  • Ge 50mm Neutral Density Filter OD=0.7, 20%T

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  • Ge 25mm Neutral Density Filter OD=0.7, 20%T

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  • Ge 50mm Neutral Density Filter OD=0.6, 25%T

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  • Ge 25mm Neutral Density Filter OD=0.6, 25%T

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  • Ge 50mm Neutral Density Filter OD=0.5, 31.6%T

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  • Ge 25mm Neutral Density Filter OD=0.5, 31.6%T

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  • Ge 50mm Neutral Density Filter OD=0.3, 50%T

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  • Ge 25mm Neutral Density Filter OD=0.3, 50%T

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  • Si 50mm Long Wave Pass Filter 1.65um 80%T

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  • Si 25mm Long Wave Pass Filter 1.65um 80%T

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  • Si 12.5mm Long Wave Pass Filter 1.65um 85%T

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  • Si 50mm Long Wave Pass Filter 1.05um 90%T

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  • Si 25mm Long Wave Pass Filter 1.05um 90%T

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  • Si 12.5mm Long Wave Pass Filter 1.05um 90%T

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  • Ge 50mm Long Wave Pass Filter 7.30um 80%T

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  • Ge 25mm Long Wave Pass Filter 7.30um 80%T

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  • Ge 12.5mm Long Wave Pass Filter 7.30um 85%T

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  • Ge 50mm Long Wave Pass Filter 4.50um 80%T

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  • Ge 25mm Long Wave Pass Filter 4.50um 80%T

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  • Ge 12.5mm Long Wave Pass Filter 4.50um 85%T

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  • Ge 50mm Long Wave Pass Filter 3.60um 80%T

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  • Ge 25mm Long Wave Pass Filter 3.60um 80%T

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  • Ge 12.5mm Long Wave Pass Filter 3.60um 85%T

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  • Ge 50mm Long Wave Pass Filter 2.40um 80%T

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  • Ge 25mm Long Wave Pass Filter 2.40um 80%T

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  • Ge 12.5mm Long Wave Pass Filter 2.40um 85%T

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  • AI2O3 25mm Bandpass Filter CWL 5.3um/BW.42um

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  • AI2O3 25mm Bandpass Filter CWL 4.7um/BW.15um

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  • AI2O3 50mm Bandpass Filter CWL 4.3um/BW.12um

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  • AI2O3 50mm Bandpass Filter CWL 3.6um/BW.14um

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  • AI2O3 25mm Bandpass Filter CWL 3.5um/BW.14um

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  • AI2O3 50mm Bandpass Filter CWL 3.0um/BW.12um

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  • Standard Long Wave Pass Filters

    The Spectral Systems Standard Long Wave Pass Filters provide a sharp cutoff below a particular wavelength. Often used for optimizing the infrared spectral analysis region, they isolate broad regions of the spectrum, simultaneously providing high transmission of desired energy and deep rejection of unwanted energy. Constructed of hard, durable first-surface dielectric coatings on optical-quality IR-transmitting substrates, these filters will withstand normal cleaning and handling associated with any high-quality optical component. For your sampling design requirements, we offer the filters in three standard sizes: 12.5, 25 mm and 50 mm diameter. Long Wave Pass Filters are designed to transmit wavelengths greater than the cut-on wavelength of the filter. Long Wave Pass Filters are used to isolate portions of the spectrum in a variety of industrial or life sciences applications including microscopy or fluorescence instrumentation. Certain Long Wave Pass Filters can also be used as cold mirrors to minimize the heat buildup often caused by infrared radiation. Please contact us for other requirements

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  • Standard Infrared Bandpass Filters

    Bandpass Filters are used to selectively transmit a portion of the spectrum while rejecting all other wavelengths. The Spectral Systems Standard Bandpass Filters are designed to provide highest transmission in your spectral region of interest and deep rejection of unwanted energy from adjoining wavelengths. Our filters are fabricated from hard, durable first-surface dielectric coatings on optical-quality, IR transmitting substrates. These filters will withstand normal cleaning and handling associated typical of optical components. Optical Bandpass Filters are useful for a variety of applications including fluorescence microscopy, spectroscopy, clinical chemistry and spectral imaging and are typically used in the life science, industrial, or R&D industries.

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  • Infrared Neutral Density Filters

    The Spectral Systems Infrared Neutral Density Filters are metallic-coated neutral density (ND) filters which obtain their optical density from a metal alloy coating on a substrate determined by the wavelength region of interest. Unlike the all-dielectric or absorption type, the metallic type ND filter employs a combination of absorption and reflection to reduce the intensity of light. Unlike screen type devices, our ND filters provide a consistent light intensity over the full beam area. Neutral Density Filters are often used to reduce the intensity of the infrared (IR) beam for highly sensitive detectors preserving linearity and improving photometric accuracy. ND Filters are also ideal for evaluating the performance of optical systems and components within a controlled experiment. ND Filters are designed to reduce transmission evenly across a portion of the spectrum by absorbing or reflecting the portion of the light that is not being transmitted. Please contact us for other requirements.

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  • AI2O3 25mm Bandpass Filter CWL 2.7um/BW.12um

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