Collection: CUSTOM PREMIUM OPTICAL FILTERS

Spectral Devices Inc offers a wide range of hard-coated optical filters that cover the ultraviolet, visible, near-infrared, and short-wave infrared spectral regions. We supply custom edge pass filters, band pass filters, multiband filters, notch filters, and dichroic mirrors on a variety of substrates cut to customer-specified dimensions. To request a quote for a custom premium optical filter, simply provide the type of filter, the required wavelength, the desired out of band rejection, the filter bandwidth, the substrate (type, shape and size), and the holder details. More information is provided below to help with planning.

Bandpass Filters

Optical bandpass filters pass a single narrow wavelength band while blocking out-of-band wavelengths. Bandpass filters are referred to by a wavelength range, also known as the passband, where light is transmitted efficiently. The most important parameters in selecting a bandpass filter are the central wavelength, the bandwidth, and the out-of-band blocking efficiency.

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Multipass Filters

Multipass Filters transmit two or more specific wavelength ranges using a single substrate. The most important parameters in selecting a multipass filter are the central wavelengths, the bandwidth of each spectral band, and the out-of-band blocking.

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Longpass Filters

Long pass filters, known as long pass edge filters, are designed to transmit wavelengths within a given wavelength range. The pass band is defined by the filter’s cut-on edge wavelength. Light below the cut-on edge is blocked by the filter. The parameters out-of-band blocking efficiency, cut-on edge wavelength, and spectral range are essential for defining a long pass filter.

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Shortpass Filters

Short pass filters, known as short pass edge filters, are designed to transmit wavelengths within a given wavelength range. The transmission band is defined by the filter’s cut-off edge wavelength, which blocks wavelengths longer than the specified edge wavelength. Specifying the out-of-band blocking efficiency, the cut-off edge wavelength, and spectral range are essential for selecting a shortpass filter.

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