Creation of CG animation containing diffraction grating

Abstract

There are expressions of the reflection and the refraction of light by the ray tracing method and the caustics method as a technique for expressing light on the computer graphics. However, the expression of the diffraction of light is not done in these techniques. Authors expressed 3DCG of grating with an arbitrary pattern diffraction grating by simulating the Raman-Nath diffraction. This report describes CG animation created by this technique.