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21 September 1998Differential equation of the normal glass dispersion
Most frequently, discussion of low-order primary and secondary axial chromatic aberrations is based on finite spectral band definitions of V-number (V) and relative partial dispersion (P), typically the band between lines F-C, of optical glass types Yet, because of the wavelength variation of refractive index, discussion of V and P at wavelengths other than the visible may bring more questions than answers.
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Juan L. Rayces, Martha Rosete-Aguilar, "Differential equation of the normal glass dispersion," Proc. SPIE 3482, International Optical Design Conference 1998, (21 September 1998); https://doi.org/10.1117/12.322020