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Proceedings Paper

Effects of a small exit pupil in an optical configuration for virtual reality
Author(s): Gerard C. de Wit; R. A. E. W. Beek; Joseph J. M. Braat
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Paper Abstract

In the optical part of a virtual reality system often an exit pupil is used that is larger than the entrance pupil of the eye. However, a system with a small exit pupil could have several advantages: more efficient use of light, less accommodation/convergence conflict, better optical quality, and a larger angular image field. To see under which conditions one can benefit from these advantages, we examine two possible drawbacks of using a small exit pupil, one related to the loss in image quality at exit pupil decentration and the other related to the limitations in the freedom of movement of the eye. An optical system with a small exit pupil, preferably a little larger than 1 mm in diameter, is only feasible, if a combination of eye-tracker and exit pupil shifting mechanism is implemented.

Paper Details

Date Published: 7 February 1997
PDF: 7 pages
Proc. SPIE 2949, Imaging Sciences and Display Technologies, (7 February 1997); doi: 10.1117/12.266354
Show Author Affiliations
Gerard C. de Wit, Delft Univ. of Technology (Netherlands)
R. A. E. W. Beek, Delft Univ. of Technology (Netherlands)
Joseph J. M. Braat, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 2949:
Imaging Sciences and Display Technologies
Jan Bares; Christopher T. Bartlett; Paul A. Delabastita; Jose Luis Encarnacao; Nelson V. Tabiryan; Panos E. Trahanias; Arthur Robert Weeks, Editor(s)

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