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Proceedings Paper

Partial-overlap biocular image misalignment tolerance
Author(s): Melvyn E. Kalich; Lisa M. Lont; Corina van de Pol; Clarence E. Rash
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Paper Abstract

Partial-overlap biocular helmet-mounted display (HMD) design flexibility and cost are directly related to image misalignment standards. Currently suggested standards are based on highly variable data from a number of studies, most using subjective discomfort or diplopia measures. This study tested the suggested standard for divergent horizontal image misalignment in a partial-overlap biocular optical system by exercising vigilance performance during image misalignment. Also, pre- and post-image misalignment divergence, convergence and heterophoria measurements were taken. The results revealed that clinical visual diagnoses, associated with accommodation and vergence, were clearly related to vigilance task performance, showing a greater number of vigilance errors for subjects viewing misaligned displays. In-device post-image misalignment divergence recovery and convergence break-recovery were significantly decreased. This was not found for the no-offset controls.

Paper Details

Date Published: 8 September 2004
PDF: 12 pages
Proc. SPIE 5442, Helmet- and Head-Mounted Displays IX: Technologies and Applications, (8 September 2004); doi: 10.1117/12.542411
Show Author Affiliations
Melvyn E. Kalich, U.S. Army Aeromedical Research Lab. (United States)
Lisa M. Lont, U.S. Army Aeromedical Research Lab. (United States)
Corina van de Pol, U.S. Army Aeromedical Research Lab. (United States)
Clarence E. Rash, U.S. Army Aeromedical Research Lab. (United States)


Published in SPIE Proceedings Vol. 5442:
Helmet- and Head-Mounted Displays IX: Technologies and Applications
Clarence E. Rash; Colin E. Reese, Editor(s)

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