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Proceedings Paper

Stereo display with time-multiplexed focal adjustment
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Paper Abstract

In stereo displays, binocular disparity creates a striking impression of depth. However, such displays present focus cues-blur and accommodation-that specify a different depth than disparity, thereby causing a conflict. This conflict causes several problems including misperception of the 3D layout, difficulty fusing binocular images, and visual fatigue. To address these problems, we developed a display that preserves the advantages of conventional stereo displays, while presenting correct or nearly correct focus cues. In our new stereo display each eye views a display through a lens that switches between four focal distances at very high rate. The switches are synchronized to the display, so focal distance and the distance being simulated on the display are consistent or nearly consistent with one another. Focus cues for points in--between the four focal planes are simulated by using a depth-weighted blending technique. We will describe the design of the new display, discuss the retinal images it forms under various conditions, and describe an experiment that illustrates the effectiveness of the display in maximizing visual performance while minimizing visual fatigue.

Paper Details

Date Published: 18 February 2009
PDF: 12 pages
Proc. SPIE 7237, Stereoscopic Displays and Applications XX, 72370R (18 February 2009); doi: 10.1117/12.807170
Show Author Affiliations
David M. Hoffman, Univ. of California at Berkeley (United States)
Philip J.W. Hands, Durham Univ. (United Kingdom)
Andrew K. Kirby, Durham Univ. (United Kingdom)
Gordon D. Love, Durham Univ. (United Kingdom)
Martin S. Banks, Univ. of California at Berkeley (United States)

Published in SPIE Proceedings Vol. 7237:
Stereoscopic Displays and Applications XX
Andrew J. Woods; Nicolas S. Holliman; John O. Merritt, Editor(s)

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