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Longpass Edge and Dichroic Filters

Longpass Edge and Dichroic Filters are designed to transmit wavelengths greater than the cut-on wavelength of the filter. Longpass Edge and Dichroic Filters are commonly used to isolate portions of the spectrum in a variety of industrial or life sciences applications including microscopy or fluorescence instrumentation. Longpass Filters are typically designed for a 0° Angle of Incidence, whereas Longpass Dichroic Filters are designed for use at a 45° Angle of Incidence. Longpass Edge and Dichroic Filters can be used with Shortpass Edge and Dichroic Filters to create custom bandpass filters. Certain Longpass Edge Filters can also be used as cold mirrors to minimize the heat buildup often caused by infrared radiation.

Edmund Optics offers a wide variety of Longpass Edge and Dichroic Filters for performance in the ultraviolet, visible, or infrared wavelengths. Longpass Edge and Dichroic Filters are available in a range of optical densities. Higher optical densities offer increased blocking capability. TECHSPEC High Performance OD 4 Longpass Filters offer high blocking with superior transmission. TECHSPEC Dichroic Longpass Filters feature hard coatings for increased durability, while offering high performance for use in fluorescence applications or as spectral beamsplitters. Longpass Edge Filter kits containing some of Edmund Optics’ most popular Longpass Edge Filters are also available.


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