Barium Crown Glass

Barium Crown Glass

Barium Crown Glass is referred to as BaK glass. The refractive index and density are between K and ZK glass. It is basically a borosilicate glass containing barium, zinc, potassium, and sodium. It contains a lot of barium, and the mass fraction of the sum of BaO and ZnO is about 20%-40%. Mainly used as a material for optical parts in optical instruments, such as optical lenses, prism and Cylindrical lenses

By modifying the glass formula, the optical glass without lead, arsenic and cadmium and other radioactive elements is expressed by a prefix "H-" indicating its envioronment-friendly characteristics, for example: H-BaK6


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