The role of flint glass
Optical glass with high content of lead oxide, high refractive index, and considerable dispersion value. According to the increase of lead oxide content, it can be divided into three types: light weight, heavy weight and extra heavy weight. Used to make lenses, prisms, mirrors, etc. in optical instruments such as microscopes, telescopes, cameras and sights. Used with crown glass to eliminate aberrations and chromatic aberrations of lenses.