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Proceedings Paper

Efficiency of polarization optics in viewing stereoscopic images
Author(s): Vivian K. Walworth; Louis Cincotta; Julius J. Scarpetti
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Paper Abstract

In recent years we have noted considerable disparity in ghosting among stereoscopic images encoded by polarization and projected onto silver screens. Potential causes include inefficiency of the polarizers used in projection, errors in orientation of linear polarizers placed over paired projection lenses, misalignment of linear polarizers in 3-D viewers; and leakage of non-polarized light through each of the polarizers. With polarizing images, the efficiency of the dyes that form the polarizing images must be considered. In addition, ghosting may arise from depolarization by poor screen surfaces or by some projection equipment. Spectrophotometric measurements confirmed visual differences in blue leakage of crossed polarizing lenses from various suppliers. We also found significant differences in transmittance curves of individual polarizers. We also examined efficiencies of dye polarizers crossed with polarizers used in 3-D viewers, simulating images formed of polarizing dyes in the StereoJet process. Although antighosting measures described earlier help mitigate unwanted imagewise ghosting here, it is important to minimize all potential for the appearance of ghosts. In addition, we reviewed the relative efficiencies of linear polarizers and circular polarizers for encoding polarization of stereoscopic images. Here we compared the transmittance of the crossed pairs as functions of both wavelength and angular disparity.

Paper Details

Date Published: 22 June 2001
PDF: 6 pages
Proc. SPIE 4297, Stereoscopic Displays and Virtual Reality Systems VIII, (22 June 2001); doi: 10.1117/12.430823
Show Author Affiliations
Vivian K. Walworth, Rowland Institute for Science (United States)
Louis Cincotta, Rowland Institute for Science (United States)
Julius J. Scarpetti, Rowland Institute for Science (United States)


Published in SPIE Proceedings Vol. 4297:
Stereoscopic Displays and Virtual Reality Systems VIII
Mark T. Bolas; Andrew J. Woods; Mark T. Bolas; John O. Merritt; Stephen A. Benton, Editor(s)

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