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Proceedings Paper

Compact near-to-eye display with integrated gaze tracker
Author(s): Toni Järvenpää; Viljakaisa Aaltonen
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Paper Abstract

Near-to-Eye Display (NED) offers a big screen experience to the user anywhere, anytime. It provides a way to perceive a larger image than the physical device itself is. Commercially available NEDs tend to be quite bulky and uncomfortable to wear. However, by using very thin plastic light guides with diffractive structures on the surfaces, many of the known deficiencies can be notably reduced. These Exit Pupil Expander (EPE) light guides enable a thin, light, user friendly and high performing see-through NED, which we have demonstrated. To be able to interact with the displayed UI efficiently, we have also integrated a video-based gaze tracker into the NED. The narrow light beam of an infrared light source is divided and expanded inside the same EPEs to produce wide collimated beams out from the EPE towards the eyes. Miniature video camera images the cornea and eye gaze direction is accurately calculated by locating the pupil and the glints of the infrared beams. After a simple and robust per-user calibration, the data from the highly integrated gaze tracker reflects the user focus point in the displayed image which can be used as an input device for the NED system. Realizable applications go from eye typing to playing games, and far beyond.

Paper Details

Date Published: 25 April 2008
PDF: 8 pages
Proc. SPIE 7001, Photonics in Multimedia II, 700106 (25 April 2008); doi: 10.1117/12.781168
Show Author Affiliations
Toni Järvenpää, Nokia Research Ctr. (Finland)
Viljakaisa Aaltonen, Nokia Research Ctr. (Finland)

Published in SPIE Proceedings Vol. 7001:
Photonics in Multimedia II
Ari Tervonen; Frank Möllmer, Editor(s)

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