Complex transmittance of the Sanyo liquid crystal television: experimental and theoretical investigations

Uwe Dahms; Guenther K.G. Wernicke; Nazif Demoli; Hartmut Gruber

doi:10.1117/12.262415

20 December 1996 Complex transmittance of the Sanyo liquid crystal television: experimental and theoretical investigations

Uwe Dahms, Guenther K.G. Wernicke, Nazif Demoli, Hartmut Gruber

Author Affiliations +

Proceedings Volume 2951, Holographic and Diffractive Techniques; (1996) https://doi.org/10.1117/12.262415
Event: Advanced Imaging and Network Technologies, 1996, Berlin, Germany

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.

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Uwe Dahms, Guenther K.G. Wernicke, Nazif Demoli, and Hartmut Gruber "Complex transmittance of the Sanyo liquid crystal television: experimental and theoretical investigations", Proc. SPIE 2951, Holographic and Diffractive Techniques, (20 December 1996); https://doi.org/10.1117/12.262415

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KEYWORDS

Projection systems

Transmittance

Polarizers

Video

Modulation

Liquid crystals

Phase shift keying

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