In the 1950s and '60s NASA decided to use it to protect delicate spacecraft equipment and eyes of astronauts from the harmful radiation and unfiltered rays of the sun in space. They developed a process which vaporized metals with electron beams in a vacuum chamber and then apply it in layers to glass surfaces as an ultra-thin film. Today as many as 45 layers of different metals are sometimes used to create the spectacular color reflections in this specialty glass. The science, process and specialized equipment necessary to produce Dichroic Glass is extremely complex and costly therefore there are only a rare few manufacturing houses know to produce it. In the USA CBS Glass - Coatings by Sandberg, Inc. is highly recognized as the industry leader in this manufacturing process. The history of Dichroic Glass is fascinating! If you would like to learn more visit cbs-dichroic.com/history.asp