Filter optics

Tools for Technical Optics

Useful online applications for the optics community

Optical density <-> Optical transmission converter

This online tool allows you to convert the optical density to optical transmission and vice versa. It is useful to calculate the optical transmission of a neutral density filter or to find out the density for a desired transmission of an OD-filter. more...


SCHOTT-Filter Calculator Program

Schott filter curce miniatureOur SCHOTT color glass filter calculator is a great online app, that allows to do custom analysis of the spectral- and the internal transmission of any SCHOTT color glass filter material. You can zoom into the transmission axis of the computed curve and select, whether you want to see the whole available spectrum or you can zoom to a custom wavelength range. The calculated result is supplied as a generated curve that can be saved or printed. more...