From Ohara Optical Glass Catalog of October 2007

For a typical sample of Ohara S-NPH53 the refractive index and extinction coefficient at 632.8 nm are 1.83959 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.