Right now you can only specify the index of refraction N. However, there are several public databases that contain glass types and their index of refraction as a function of the wavelength of incident light, usually in the form of coefficients for some given functional form. It is straight forward to implement this: find a comprehensive database containing glass types and their coefficients, create some function that takes a glass type and wavelength and outputs an index N, and allow a surface to have a variable index of refraction that calls this function when needed.
GNiendorf
commented
5 years ago
Right now you can only specify the index of refraction N. However, there are several public databases that contain glass types and their index of refraction as a function of the wavelength of incident light, usually in the form of coefficients for some given functional form. It is straight forward to implement this: find a comprehensive database containing glass types and their coefficients, create some function that takes a glass type and wavelength and outputs an index N, and allow a surface to have a variable index of refraction that calls this function when needed.