Diffractive Lightguides

Use VirtualLab Fusions powerful Diffractive Lightguide solution to design, analyze and optimize all commonly available AR|VR|XR lightguide approaches in one platform. Including the seamless integration of electromagnetic grating effects, polarization, coherence, diffraction and interference.

Our non-sequential modeling concept automatically incorporates all necessary light paths and our advanced detectors calculate irradiance, uniformity, PSF/MTF and much more for multi-channel input at any eye position.

Design, Analyze,

Optimize.

One Platform for your Lightguide Solution.

  • Multiscale & Non-sequential Modeling Approach
    From microstructured grating over multi-reflection to the inclusion of macroscopic lenses for e.g. a human eye model – VirtualLab Fusions multiscale and non-sequential modeling approach incorporates the entire system: no data transfers or software interfaces are necessary.
     
  • Precise Grating Simulation
    Utilize rigorous grating solvers (FMM/RCWA) for accurate in- and outcoupling efficiency analysis. Our flexible stack and region definition enable seamless integration of gratings of any shape and at any position within the light guide – even modulated gratings are possible.
     
  • Design & Optimization
    Benefit from dedicated wizards, that help you design your layout, customizable merit functions (e.g., uniformity, efficiency), and advanced global evolutionary optimization algorithms to streamline your light guide system development.
Optimize and analyze even the most complex grating structures
with VirtualLab Fusion’s powerful grating tools.

Our flexible region system enables seamless placement of those gratings at any point within the light guide, ensuring precise control over optical performance.

Additionally, VirtualLab Fusion supports both step-wise and continuous variation of key grating parameters – such as fill factor and extension – allowing for tailored designs to meet your specific engineering requirements.

Tutorial

Construction of a Light Guide

Light guides with coupling gratings can be set up in VirtualLab Fusion using the Light Guide component and its flexible region definition.

Use Case

Modeling of a HoloLens 1 - Type Layout with Light Guide Component

This use case demonstrates the modeling of a device of a simple “HoloLens 1”-type layout with a Light Guide component capable of guiding light with a 32° × 18° FoV.

Tutorial

Specification of Diffraction Orders and Efficiencies for Grating Regions

This covers the user-friendly interface to select grating orders and specify their efficiencies (either idealized or calculated rigorously) for the grating regions of a light guide.

Tutorial

Light Guide Layout Design Tool

The Layout Design tool allows to design a custom “Hololens 1”-like augmented or mixed reality system according to the desired specifications.

Use Case

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.

Tutorial

How to Set Up a Lightguide with Real Grating Structures

You learn how to import a previously designed real grating structure into the lightguide component and explains the role and handling of lookup tables.

Tutorial

Footprint Analysis of Lightguides for AR/MR Applications

The Footprint and Grating Analysis tool allows the optical designer to determine how the light will interact with the various grating regions of the lightguide.

Tutorial

Grating Analysis and Smoothly Modulated Grating Parameters on Lightguides

In this tutorial, smoothly varied grating parameters are introduced to lightguides for AR/MR applications, by using Grating Analysis Tool.

Use Case

Complex Lightguide System with a 2D Eye Pupil Expansion and Human Eye Model

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.