Share Email Print
cover

Proceedings Paper

Effect of eye position on the projected stimulus distance in a binocular head-mounted display
Author(s): Jeffrey W. McCandless; Stephen R. Ellis
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper 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.

Paper Details

Date Published: 3 May 2000
PDF: 8 pages
Proc. SPIE 3957, Stereoscopic Displays and Virtual Reality Systems VII, (3 May 2000); doi: 10.1117/12.384478
Show Author Affiliations
Jeffrey W. McCandless, San Jose State Univ. Foundation and NASA Ames Research Ctr. (United States)
Stephen R. Ellis, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 3957:
Stereoscopic Displays and Virtual Reality Systems VII
John O. Merritt; Mark T. Bolas; Stephen A. Benton; Andrew J. Woods; Mark T. Bolas, Editor(s)

© SPIE. Terms of Use
Back to Top