Effect of eye position on the projected stimulus distance in a binocular head-mounted display

Jeffrey W. McCandless; Stephen R. Ellis

doi:10.1117/12.384478

3 May 2000 Effect of eye position on the projected stimulus distance in a binocular head-mounted display

Jeffrey W. McCandless, Stephen R. Ellis

Proceedings Volume 3957, Stereoscopic Displays and Virtual Reality Systems VII; (2000) https://doi.org/10.1117/12.384478
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

During vergence eye movements, the effective separation between the two eyes varies because the nodal point of each eye is offset from the center of rotation. As a result, the projected distance of a binocularly presented virtual object changes as the observer converges and diverges. A model of eye and stimulus position illustrates that if an observer converges toward a binocular virtual stimulus that is fixed on the display, the projected stimulus will shift outward away from the observer. Conversely, if the observer diverges toward a binocular virtual stimulus that is fixed on the display, the projected stimulus will shift inward. For example, if an observer diverges from 25 cm to 300 cm, a binocular virtual stimulus projected at 300 cm will shift inward to 241 cm. Accurate depiction of a fixed stimulus distance in a binocular display requires that the stimulus position on the display surface should be adjusted in real- time to compensate for the observer's eye movements.

Citation Download Citation

Jeffrey W. McCandless and Stephen R. Ellis "Effect of eye position on the projected stimulus distance in a binocular head-mounted display", Proc. SPIE 3957, Stereoscopic Displays and Virtual Reality Systems VII, (3 May 2000); https://doi.org/10.1117/12.384478

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