In response to user interest we have added to the built-in library refractive index data for several plastic materials.

Materials

codeglass namematerial
491592PMMApoly(methyl methacrylate)
591305PSpolystyrene
584291PCpolycarbonate
566354SANstyrene acrylonitrile
579320CTECTE-Richardson
570333NASNAS-21 Novacore
509520OptorezOptorez
531565ZeonexZeonex
584308BayerBayer

In the above table, the code is from the measured data in the Nikolov and Ivanov paper (see below). The glass code is a sequence of 6 digits abcdef that specifies the D wavelength index is nD=abc and the Abbe constant is VD=de.f. For example, PMMA with code 491614 has nD=1.491 and VD=61.4. This code is not the d wavelength code used by the LensForge library.

Reference

Ivan D. Nikolov and Christo D. Ivanov, Optical plastic refractive measurements in the visible and the near-infrared regions, Applied Optics 39 (2000) 2067.