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Proceedings Paper

Complex transmittance of the Sanyo liquid crystal television: experimental and theoretical investigations
Author(s): Uwe Dahms; Guenther K.G. Wernicke; Nazif Demoli; Hartmut Gruber
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Paper Abstract

The complex transmittance and selected physical parameters (molecular director, twist angle, optical flatness, static intensity contrast ratio) of liquid-crystal displays removed from a commercially available Sanyo video projector are studied. The phase modulating behavior and phase and amplitude coupling are determined as function of the video drive signal and the polarizer/analyzer configuration. The suitability of the LC displays as input modulator in a joint transform correlator (JTC) setup is shown. Correlation experiments with input signals taken from an original Babylonian cuneiform inscription are carried out. The influence of small rotations of the target sign as well as small changes in size of the target on the correlation spot height is studied.

Paper Details

Date Published: 20 December 1996
PDF: 10 pages
Proc. SPIE 2951, Holographic and Diffractive Techniques, (20 December 1996); doi: 10.1117/12.262415
Show Author Affiliations
Uwe Dahms, Humboldt Univ. Berlin (Germany)
Guenther K.G. Wernicke, Humboldt Univ. Berlin (Germany)
Nazif Demoli, Univ. of Zagreb (Croatia)
Hartmut Gruber, Humboldt Univ. Berlin (Germany)


Published in SPIE Proceedings Vol. 2951:
Holographic and Diffractive Techniques
Guenther J. Dausmann, Editor(s)

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