Review of operating modes for twisted nematic liquid crystal displays for applications in optical image processing

Jeffrey A. Davis; Maria J. Yzuel; Juan Campos; Ignacio Moreno; Andres Marquez; Josep Nicolas

doi:10.1117/12.510257

10 November 2003 Review of operating modes for twisted nematic liquid crystal displays for applications in optical image processing

Jeffrey A. Davis, Maria J. Yzuel, Juan Campos, Ignacio Moreno, Andres Marquez, Josep Nicolas

Author Affiliations +

Proceedings Volume 5181, Wave Optics and Photonic Devices for Optical Information Processing II; (2003) https://doi.org/10.1117/12.510257
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

In this work we review the application of twisted nematic liquid crystal displays (TN-LCD's) for image processing, pattern recognition and diffractive optical elements. For these applications, three kinds of spatial modulations are of interest: phase-only, amplitude-only and combined full amplitude and phase modulation. However TN-LCD's generally provide coupled phase and amplitude modulation. We review how to achieve these three desired operating conditions. We begin with a discussion of different Jones matrix models for TN-LCD displays. We examine optical configurations for achieving amplitude-only modulation and polarization eigenvectors for achieving phase-only modulation. Then we review an extremely successful technique for obtaining combined full amplitude and phase modulation by spatially modulating the maximum phase depth.

Citation Download Citation

Jeffrey A. Davis, Maria J. Yzuel, Juan Campos, Ignacio Moreno, Andres Marquez, and Josep Nicolas "Review of operating modes for twisted nematic liquid crystal displays for applications in optical image processing", Proc. SPIE 5181, Wave Optics and Photonic Devices for Optical Information Processing II, (10 November 2003); https://doi.org/10.1117/12.510257

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