1results about How to "Low Abbe number" patented technology

This invention provides an optical glass with a refractive index of 1.76–1.83, an Abbe number of 21–27, and a high partial dispersion ratio. The optical glass, with its composition expressed as molar percentage, contains: P₂O₅: 20–40%; TiO₂: 10–30%; Nb₂O₅: 3–20%; WO₃: 4–20%; Na₂O: 5–26%; K₂O: 5–26%. Through reasonable composition design, the optical glass obtained by this invention has a high refractive index, a low Abbe number, and a high partial dispersion ratio, meeting the requirements for use in high-image-quality optical instruments.