Journal
OPTICS EXPRESS
Volume 27, Issue 9, Pages 12572-12581Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.012572
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Funding
- European Research Council (ERC) under the European Union's Seventh Framework Program (FP7/2007-2013)/ERC advanced grant [340200]
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We present a novel head-mounted display setup that uses the pinhole imaging principle coupled with a low-latency dynamic pupil follower. A transmissive LCD is illuminated by a single LED backlight. LED illumination is focused onto the viewer's pupil to form an eyebox smaller than the average human pupil, thereby creating a pinhole display effect where objects at all distances appear in focus. Since nearly all the light is directed to the viewer's pupil, a single low-power LED for each primary color with 0.42 lumens total output is sufficient to create a bright and full-color display of 360 cd/m(2) luminance. In order to follow the viewer's pupil, the eyebox needs to be steerable. We achieved a dynamic eyebox using an array of LEDs that is coupled with a real-time pupil tracker. The entire system is operated at 11 msec motion-to-photon latency, which meets the demanding requirements of the real-time pupil follower system. Experimental results effectively demonstrated our head-mounted pinhole display with 37 degrees FOV and very high light efficiency, equipped with a pupil follower with low motion-to-photon latency. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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