Challenges and Solutions in the Design of Lightguides for XR Glasses

Darmstadt, 13 th of June, 2019, DGaO 2019

Glasses for AR, MR, and VR, also referred to as XR glasses, seem to be one of the next big technical innovations to come. Several technical challenges are to be tackled and it is not clear yet what kind of concept will finally become convincing. The application of a lightguide in combination with grating regions is definitely a good candidate and we will discuss the concept, challenges and our current strategies to deal with them. In order to include all relevant effects in the modeling and design a physical-optics approach is mandatory. In the design we proceed in two steps: first we generate designs for each field-of-view (FOV) and then select one from an array of strategies for how to combine them.