Like our rectangular UV Fused Silica plano-convex cylindrical lenses, these round cylindrical lenses can be used to focus light but only in one dimension. UV-grade fused silica offers high transmission in the deep UV and exhibits virtually no laser-induced fluorescence, making it an ideal choice for applications from the UV to the near IR. In addition, UV fused silica has better homogeneity and a lower coefficient of thermal expansion than N-BK7.