High-ultraviolet-transmittance borosilicate glass, preparation method thereof and optical equipment

The invention relates to borosilicate glass with high ultraviolet transmittance, a preparation method thereof and optical equipment. The preparation method of the high-ultraviolet-transmittance borosilicate glass comprises the following steps: melting a glass raw material in a magnetic field environment to obtain a glass melt, carrying out a reduction reaction on an iron element as an impurity in the glass raw material, and when the thickness of the prepared high-ultraviolet-transmittance borosilicate glass is 2.0 mm, the transmittance of light with the wavelength of 185 nm is greater than 55%. According to the method, on one hand, the requirement for the content of the iron element in the raw materials is relaxed, and on the other hand, the pretreatment step of removing the iron element in the raw materials is omitted. Therefore, the preparation process of the borosilicate glass with high ultraviolet transmittance can be reduced, the production cost is reduced, the selection range of raw materials is expande