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Proceedings Paper

Liquid crystal display as dynamic diffractive element
Author(s): Sven Krueger; Guenther K.G. Wernicke; Hartmut Gruber; Nazif Demoli; Matthias Duerr; Stephan Teiwes
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Paper Abstract

Liquid crystal panels, originally designed and fabricated for projection systems, are used as spatial light modulator in optical correlators or in fringe projection systems. An adapted driver electronics and measurements of the phase modulation behavior can lead to a dynamic phase modulating system with an almost linear modulation and a maximum phase shift of 2(pi) . The electronics of our Sony-LCD based system can directly address the graphics card signal or can picture various video standards. So, computer generated holograms can be addressed at video frame rates. We demonstrate examples of technical beam splitters, 2D holograms, reconstruction of digital holograms and animation of diffraction patterns. Here we will state to problems of light efficiency, intensity and wavelength dependent modulation. Furthermore, we will show first results of an FLC based system and derive boundary conditions for applications in holographic projection and micro- structuring.

Paper Details

Date Published: 30 March 2001
PDF: 8 pages
Proc. SPIE 4294, Projection Displays VII, (30 March 2001); doi: 10.1117/12.420789
Show Author Affiliations
Sven Krueger, Humboldt-Univ. zu Berlin (Germany)
Guenther K.G. Wernicke, Humboldt-Univ. zu Berlin (Germany)
Hartmut Gruber, Humboldt-Univ. zu Berlin (Germany)
Nazif Demoli, Univ. of Zagreb (Croatia)
Matthias Duerr, HoloEye GmbH (Germany)
Stephan Teiwes, HoloEye GmbH (Switzerland)

Published in SPIE Proceedings Vol. 4294:
Projection Displays VII
Ming Hsien Wu, Editor(s)

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