The Glass Dispersion Formulas

The coefficients in the catalog are used in any one of several polynomial formulas that OpticStudio recognizes. There is also a dispersion formula described by the six-digit MIL number, but those indices are calculated directly from the MIL number entered on the spreadsheet. The MIL number formula is not part of the glass catalog, and so it will not appear. See "Using MIL number glasses" later in this reference file for a discussion of the MIL number glass formula. You may add new glasses to the currently loaded catalog if you have index data given in the form of one of the following equations. In all of the equations λ is in micrometers.

Next:

• The Schott Formula
• The Sellmeier 1 Formula
• The Sellmeier 2 Formula
• The Sellmeier 3 Formula
• The Sellmeier 4 Formula
• The Sellmeier 5 Formula
• The Herzberger Formula
• The Conrady Formula
• The Handbook of Optics 1 Formula
• The Handbook of Optics 2 Formula
• The Extended Formula
• The Extended 2 Formula
• The Extended 3 Formula
• General Comments on Using Dispersion Formulas