Interference and absortion filters I am learning a bit about Uv-vis spectroscopy filters. As far as I know there are two commonly used: interference and absotion filters.
The first one works with the interference of light principle and the second is a glass with some pigments which absorbs light (of some specific frequency).

Question

Have you got any idea if there is any further classification of absortion filters? Any help will be greatly welcome.
There are a great many of each type of these filters. 

Interference filters are optimized for different wavelengths, different bandwidths, transmission vs. reflection etc. by controlling the materials and the thicknesses of the layers. A commercial supplier, Edmund Optics, shows how to specify and order filters.

In a similar manner, absorptive filters depend on the chemicals used to make them. For example, a solution of $\ce{CuSO4}$, copper sulfate, in water removes wavelengths between ~600-750 nm, but letting blue light through..