Colored filter glasses, each with its own spectral characteristics for transmitting and absorbing light at various wavelengths of the visible spectrum, are available in a variety of filter types. This type of optical material is most commonly used in cinematography, clinical chemistry, fluorescence microscopy, lighting, machine vision medical instruments, optoelectronics, and spectroscopy applications. The strict control of material thickness achieves precise filtering of the spectrum across a large bandpass. Material thickness can be calculated using transmittance simulation software available from the material manufacturers.

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