LBTEK Dichroic Filters are flat optical components that achieve color separation by coating a glass substrate with multiple layers of film. Compared to other plastic-based filters, the glass surface coating offers better long-term stability, does fade over time, and withstands higher laser powers and higher operating temperatures. Borofloat glass is a high-quality borosilicate glass developed by Schott that has a very flat surface and excellent optical properties. This glass also has an extremely low coefficient of thermal expansion, high resistance to thermal shock, and good high-temperature resistance. LBTEK uses Borofloat glass to manufacture a variety of optical components, including various filter products. Our filters are carefully processed and strictly quality-controlled, ensuring that LBTEK can provide users with high-quality filter products at reasonable prices.