In response to many requests from optical designers and using the latest visible to infrared index data for GLS glass we are pleased to release the full Sellmeier coefficients for GLS. Use of the following coefficient enables the refractive properties of GLS lenses to be modelled in most common lens design programs.
Note it is essential to use the five parameter version of the Sellmeier equation, with the following coefficients
| L1 | 0.07157 | K1 | 1.5127 |
| L2 | 0.03312 | K2 | 1.9409 |
| L3 | 0.00727 | K3 | 0.7893 |
| L4 | -0.04402 | K4 | 0.1026 |
| L5 | 750.00 | K5 | 2.3353 |
If you would also like dn/dT data to further aid you modelling please contact us