Wide field of view augmented reality display showing virtual teapot at far and near distance together with real objects, soda cans, at near and far. Photos through display system left and right eyes with focus at far (top row), focus near (bottom row), and overhead view (right) of the system. Details from right eye views showing focus of near and far soda cans and virtual teapot (middle).
Wide field of view augmented reality display showing virtual teapot at far and near distance together with real objects, soda cans, at near and far. Photos through display system left and right eyes with focus at far (top row), focus near (bottom row), and overhead view (right) of the system. Details from right eye views showing focus of near and far soda cans and virtual teapot (middle).

 

Augmented Reality overlays computer-generated visuals onto the real world in real time.  Some of the fundamental limitations of existing near eye displays for AR are limited field of view, low angular resolution, and fixed accommodative state. We tackle the problem of providing wide FOV and accommodative cues together in the context of see-through and varifocal systems. We propose a new hybrid hardware design for NEDs that uses see-through deformable membrane mirrors. Our work promises to address Vergence-Accommodation Conflict caused by lack of accommodative cues.

 

Publications

 

 overheaddynamicfocus D. Dunn, C. Tippets, K. Torell, P. Kellnhofer, K. Akşit, P. Didyk, K. Myszkowski, D. Luebke, and H. Fuchs.
Wide Field Of View Varifocal Near-Eye Display Using See-Through Deformable Membrane Mirrors
To appear in: IEEE Transactions on Visualization and Computer Graphics (Selected Proceedings, IEEE Virtual Reality 2017, Los Angeles, CA).
Abstract: Accommodative depth cues, a wide field of view, and ever-higher resolutions all present major hardware design challenges for near-eye displays. Optimizing a design to overcome one of these challenges typically leads to a trade-off in the others. We tackle this problem by introducing an all-in-one solution – a new wide field of view gaze-tracked near-eye display for augmented reality applications. The key component of our solution is the use of a single see-through varifocal deformable membrane mirror for each eye reflecting a display. They are controlled by airtight cavities and change the effective focal power to present a virtual image at a target depth plane which is determined by the gaze tracker. The benefits of using the membranes include wide field of view (100° diagonal) and fast depth switching (from 20 cm to infinity within 300 ms). Our subjective experiment verifies the prototype and demonstrates its potential benefits for near-eye see-through displays.
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