21 May 2018 Compact see-through AR system using buried imaging fiber bundles
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Abstract
This design concept is using multi-core imaging fiber bundles with small diameters (<350 μm) to transfer information from an image source (e.g. laser pico projector) to the eye of the user. One of the main benefits of this approach is that the resulting glasses are almost indistinguishable from conventional eyewear. Not only are the fiber bundles very thin and positioned close to the eye but their difference in refractive index compared to the surrounding medium is comparably small which makes them hardly visible. At the same time, they can carry a significant space-bandwidth product and may be easier to fabricate in comparison to similar solutions using waveguides or Fresnel-type extractors. Using ray tracing and wave-optical considerations, we show that such an approach can lead to highly inconspicuous AR glasses with a >20° diagonal field of view and good angular resolution.
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S. Thiele, P. Geser, H. Giessen, Alois M. Herkommer, "Compact see-through AR system using buried imaging fiber bundles", Proc. SPIE 10676, Digital Optics for Immersive Displays, 106761E (21 May 2018); doi: 10.1117/12.2315685; https://doi.org/10.1117/12.2315685
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