Augmented reality through almost-normal glasses could soon be here

CEA-Leti outlined a bold vision for augmented reality glasses in three papers it presented at SPIE Photonics West in the United States, charting a course toward high-tech specs as lightweight and unobtrusive as regular prescription eyewear.
The technology hinges on transparent silicon nitride waveguides deposited on a glass substrate.
The waveguides would then be used to project pixelated holograms directly onto the user’s retina.
The system itself is a huge technological challenge, and pixelated holograms have been the topic of three CEA-Leti patents.
The current optical losses are too high for the system to work, but research is under way to reduce them.
The augmented reality glasses could also find opportunities on the health and defense markets.

Contact: camille.giroud@cea.fr

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