Real Grating Effects in Lightguide Applications

For the purposes of in- and outcoupling light, as well as for guiding the light from a source to the intended eyebox, different kinds of surface relief or even holographic gratings are commonly used. The design of these gratings in regard to efficiency and uniformity is therefore one of the major challenges in the design process of AR/MR devices. VirtualLab Fusion provides the optical designer with a variety of different tools to investigate grating properties and an easy way to apply the designed grating structures onto the lightguide surface. This enables the detailed simulation of the whole device including all relevant effects, like polarization and coherence.

Simulation of Lightguide with 1D-1D Pupil Expander and Real Gratings

The investigation of the influence of real gratings on the efficiency and uniformity of a lightguide are of essential importance. This use case shows an example with a slanted grating as incoupler and binary surface relief grating as EPE and outcoupler.

How to Set Up a Lightguide with Real Grating Structures

This use case demonstrates how to import a previously designed real grating structure into the lightguide component and explains the role and handling of lookup tables.

Check out our upcoming Webinar on Microlens Arrays

Check out our upcoming Webinar on Microlens Arrays