Augmented reality devices based on waveguide/hologram coupling

Published : 13 December 2016

Recent progress in the field of Information and Communication Technologies has led to an increase of the information flow toward the user. The need to manage such large amount of information in real time has reinforced the field of visualization ergonomics. Among the various technological solutions studied today the ability to superimposed information on the user’s field of view has drawn particular interest. These solutions are however still constrained by technical limitation linked to the eye physiology. Searchers agree that disruptive technologies are needed to overcome these limitation in order to allow good visual resolution and field of view without severe constraints on the eye location.

Our laboratory has developed an innovative concept of near eye display based on pixelated holograms. This work has mainly concerned today the holographic part, it has now to be reinforced on the other part of the concept: the addressing of the holograms by a grid of waveguides in the visible range. The goal of the PhD is to complement the work done on holography by the design, the manufacturing and the characterization of waveguides coupled to the holograms with outcoupling elements. The student will use simulation tools to design the waveguides in order to develop waveguides process solutions adapted to the propagation in the visible range (SiN waveguides, …). He will be helped in this task by a partner laboratory in CEA expert in this domain. He will also record the holograms in order to demonstrate the interaction between hologram and waveguide. The characterization will be done in relationship with the human visual system in order to demonstrate the ability to produce images on an intraocular projection scheme for augmented reality applications.

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