Produced in special tempered and dichroic glass, they have an unlimited duration. They are composed of a borosilicate glass substrate, on which is deposited a dielectric coating that interacts with the wavelength of the light, filtering it and generating different colors. What is not transmitted is reflected. There is  no absorption of light by the filter which would cause an overheating. They are used in lighting to color the light or correct the color temperature. The filters can be inserted in the image changes to make it change color, or also to color a monochromatic color logo you want. It is possible to realize filters of different diameters.

 

There is a wide range of colors, but the yield is very dependent on power projection and the projector model you are chart using, so it is good to know that it is not easy to stick to Pantone colors of graphics rather than its yield on monitor or in print, but we will approach as much as possible through the choice of the most appropriate filter.