Performance Investigation of Lightguide Systems

The design process of any optical system must include an investigation of the performance of the system as a crucial step. Of course, this includes lightguide devices for applications in the field of augmented and mixed reality (AR/MR), as relatively complex representatives of optical systems. Depending on the application, “performance” can be defined by different merit functions. VirtualLab Fusion provides the optical engineer with a set of helpful tools and detectors to investigate the properties of the system.

Below we demonstrate two examples centered around the performance evaluation of lightguides: an NED (“near to exe”) device with 2D pupil expansion and a human eye model in order to calculate the MTF & PSF, and another one on characterization of the lateral uniformity.

Complex Lightguide System with a 2D Eye Pupil Expansion

A complex lightguide system, including a 2D-periodic exit pupil expander in combination with slanted gratings in the outcoupler, is presented. PSF and MTF as well as lateral uniformity are evaluated.

Uniformity Detector for Lightguide Systems

For the evaluation of the performance of lightguide systems in the field of AR/MR devices, the lateral uniformity of the light distribution in the eyebox is one of the most crucial parameters. This use case shows how to use VirtualLab’s uniformity detector.

Meet us at Photonics West

Meet us at Photonics West