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SCHOTT BK7 is a high-performance optical glass used in a wide range of precision optical devices and devices. It has excellent optical properties, especially in the visible range, providing high transmittance and low scattering, suitable for the manufacture of lenses, prisms, optical components and instruments. BK7 glass has a refractive index of about 1.51, enabling high precision optical design. At the same time, BK7 also has excellent mechanical strength and good workability, suitable for precision cutting, polishing and coating treatment. Its low coefficient of thermal expansion enables it to maintain stable physical properties in a temperature changing environment, making it an ideal material for the optical industry.
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