US 12,032,192 B2
Refractive index calculations for materials
Sabine Schweizer, Angelbachtal (DE); Kwan Skinner, Mesa, AZ (US); and Lalitha Subramanian, Newtown, PA (US)
Assigned to Dassault Systemes Americas Corp., Waltham, MA (US)
Filed by Dassault Systemes Americas Corp., Waltham, MA (US)
Filed on Aug. 9, 2022, as Appl. No. 17/818,469.
Prior Publication US 2024/0053524 A1, Feb. 15, 2024
Int. Cl. G02B 5/30 (2006.01); G01N 21/21 (2006.01); G01N 21/23 (2006.01)
CPC G02B 5/3083 (2013.01) [G01N 21/21 (2013.01); G01N 21/23 (2013.01); G02B 5/305 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A computer-implemented method for calculating birefringence of a material, the method comprising:
building one or more three-dimensional structure models of one or more compounds forming a material;
for each of the built one or more three-dimensional structure models:
aligning the three-dimensional structure model along a molecular axis;
setting one or more tilt angles for the aligned three-dimensional structure model; and
using the aligned three-dimensional structure model with the set one or more tilt angles, calculating a molecular polarizability tensor for the aligned three-dimensional structure model with the set one or more tilt angles; and
based on the calculated molecular polarizability tensors, calculating birefringence of the material.