Colored Glass Alternative Longpass Filters
Our colored glass alternative long-pass edge filters are a great alternative to standard colored glass filters. Using Newport's patented Stabilife® coating technology, many layers of refractory metal oxide film are deposited under vacuum in a precise sequence, defining the spectral signature of the filters. Unlike Colored-Glass filters which rely upon absorption to create the filter's spectral response, CGA filters utilize optical interference phenomena to create wide bands of very-high reflectance to create the blocking region of the filters, and wide bands of very-low reflectance to create the transmission bands of the filters.
Colored Glass Longpass Filters
Our colored glass longpass optical filters are made from high quality Schott absorptive filter glass. These long-wave pass edge filters are precision polished for demanding research or OEM applications.
Standard Longpass Filters
These longpass edge filters are made with hard dielectric filter coatings, producing a very steep transition between passband and stopband making them far superior to absorptive colored glass filters.