Optical filter glass is known for its selective absorption in the visible wavelength range. If their filter effect lies within the visible light spectrum, optical filter glasses appear to be colored.
Numerous colorants with different concentrations and many different base glasses have been created to facilitate the development of an assortment of filters, some with filter properties.
optical filter glasses include the following filter types in the wavelength range above 200 nm:
Bandpass filters – Light of a certain wavelengths can pass through these filters
Longpass filters – Long wavelengths of light can pass through these filters
Shortpass filters – Short wavelengths of light can pass through these filters
Neutral density filters – These filters have almost constant attenuation inside the visible spectrum
Contrast enhancement filters – Specially developed filters for display applications that deliver clarity (green displays) and true color rendition in full color displays
Multiband filter – Light of several bands of wavelengths can pass through this filter
Photo filters – UVW-365, Yellow 490, Grey filter 25 & 50, Orange 565, Red 600 & 625, Yellow-Orange 550
You can find optical filter glass datasheets in the Downloads area.
In addition to the Glass Filters – Catalogue, we also include a filter calculation tool. This tool will assess your needs and provide you with the appropriate solution for your individual needs. Please refer to our Technical Articles & Tools for more information about our custom optical solutions.