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Liquid crystal televisions for use as spatial light modulators in a complex optical correlator

Kilpatrick, RE; Gilby, JH; Day, SE; Selviah, DR; (1998) Liquid crystal televisions for use as spatial light modulators in a complex optical correlator. In: Casasent, DP and Chao, TH, (eds.) OPTICAL PATTERN RECOGNITION IX. (pp. 70 - 77). SPIE-INT SOC OPTICAL ENGINEERING

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Abstract

A method is presented for selecting the optimum polariser configurations for a complex optical correlator. Two twisted nematic (TN) liquid crystal televisions (LCTVs) are used to modulate intensity and phase. The profiles of intensity and phase modulation vs. applied pixel voltage are determined using a Jones calculus model of the Philips P3.4 TN LCTV between polarisers. This allows selection of separate polariser orientations which yield the highest ranges of intensity and phase modulation. The optimum configurations provide continuous intensity modulation with approximately 261 degrees of phase modulation.

Type: Proceedings paper
Title: Liquid crystal televisions for use as spatial light modulators in a complex optical correlator
Event: Conference on Optical Pattern Recognition IX
Location: ORLANDO, FL
Dates: 1998-04-14 - 1998-04-15
ISBN: 0-8194-2835-3
Keywords: liquid crystal televisions, intensity modulation, phase modulation, polariser angles, complex optical correlator
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/87644
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