k-Domain Layout Visualization
("The Magic Circle")
Abstract
Lightguide devices for augmented- and mixed-reality applications must fulfill two simultaneous functions: they must allow the light scattered by the environment to pass through (i.e. be transparent) and at the same time transport the artificial image to be superimposed from the emitter to the eye of the user. This is most often realized with transparent lightguides in which light can be guided under TIR in combination with different types of grating structures on the surfaces to couple light in and out.
In VirtualLab Fusion, the k-Layout Visualization tool provides a powerful illustration method in the k domain to analyze the guiding and coupling conditions of a specific lightguide layout.
VirtualLab Fusion Configuration
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VirtualLab Fusion
Are you interested in further reading?
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
Flexible Region Definition
This tutorial walks you through the flexible configuration of regions in VirtualLab Fusion, which allow the user to define variously shapes...
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.