Stereoscopic large-screen displays using liquid-crystal light-valve projectors

Joe M. Haggerty; Stephen J. Reinsch; William P. Bleha Jr.; Rodney D. Sterling

doi:10.1117/12.19878

1 August 1990 Stereoscopic large-screen displays using liquid-crystal light-valve projectors

Joe M. Haggerty, Stephen J. Reinsch, William P. Bleha Jr., Rodney D. Sterling

Proceedings Volume 1255, Large-Screen and Projection Displays II; (1990) https://doi.org/10.1117/12.19878
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

Abstract

A stereoscopic projection system for displaying 3-D video information has been constructed using Liquid Crystal Light Valves (LCLV5) . Presently most stereoscopic displays of video imagery use a single CRT with a liquid crystal or PLZT shutter1'2 or use two CRT5 with orthogonally polarized outputs3. The advantage of the first method is only one CRT is needed and image convergence is not a problem. However, whether passive or active glasses are used for the field-sequential viewing, ghost images are formed due to the finite phosphor decay time1. A dual CRT projector 3-D display has the advantage that passive glasses can be easily employed with virtually no ghost images. The luminous output of the projector, though, is reduced by half during the initial polarization process. In a Liquid Crystal Light Valve projector the output light is linearly polarized in normal operation. Therefore a two-projector 3-D stereoscopic system using LCLVs can be realized which has very low intensity ghost images, high luminous output, and can be viewed with passive glasses. This paper discusses some potential configurations of such a projector and how a newly developed LCLV with improved time response makes real-time 3-D imaging using this technology possible.

Citation Download Citation

Joe M. Haggerty, Stephen J. Reinsch, William P. Bleha Jr., and Rodney D. Sterling "Stereoscopic large-screen displays using liquid-crystal light-valve projectors", Proc. SPIE 1255, Large-Screen and Projection Displays II, (1 August 1990); https://doi.org/10.1117/12.19878

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