Before revision: As an example, the coefficients for a common borosilicate crown glass known as BK7 are shown below: Coefficient Value B1 1.03961212 B2 0.231792344 B3 1.01046945 C1 6.00069867×10−3 μm2 C2 2.00179144×10−2 μm2 C3 1.03560653×102 μm2 The Sellmeier coefficients for many common optical materials can be found in the online database of RefractiveIndex.info.
After revision: As an example, the coefficients for a common borosilicate crown glass known as BK7 are shown below: Coefficient Value B1 1.03961212 B2 0.231792344 B3 1.01046945 C1 6.00069867×10−3 μm2 C2 2.00179144×10−2 μm2 C3 1.03560653×102 μm2