There are about as many types of glass filters as there are applications for them. Color glass filters, due to their selective absorption in the visible wavelength range, will exhibit various colors depending on the glass type. Optical color glass filters are used in a variety of laboratory and industrial applications, such as safety glasses, industrial measurement, regulation technology and environmental protection. In addition to the visible light wavelength range, color glass filters are also available for infrared, ultraviolet, and colorless transmission requirements. Additionally, color glass filters vary in size, shape, and thickness depending on the application.