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From Ohara Optical Glass Catalog of October 2007
For a typical sample of Ohara S-NPH 1 the refractive index and extinction coefficient at 632.8 nm are 1.80105 and 0. Below are files of complete refractive index and extinction coefficients. If the file is not available for download, you can request our proprietary file by clicking "Request".
Refractive Index Reference - Generated using Sellmeier dispersion model with coefficents listed in Ohara Glass Catalog of October 2007
No guarantee of accuracy - use at your own risk.
Tab-delimited data file for unrestricted use: