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Campos, J.; Márquez, A.; Nicolás, J.; Moreno, I.; Iemmi, C.; Escalera, J.C.; Davis, J.A.; Yzuel, M.J.; Refregier P.; Javidi B.; Ferreira C.; Vallmitjana S. "Optimization of liquid crystal displays behavior in optical image processing and in diffractive optics" (2001) Optoelectronic Information Processing: Optics for Information Systems. 81 CR:335-364
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Abstract:

In this paper we will revise the application of twisted nematic liquid crystal displays (TN-LCD) as spatial light modulators (SLM) for image processing and diffractive optics. In general two kind of responses are desired for the mentioned applications: amplitude-only and phase-only modulation. In general the users of commercially available LCDs do not know the optical properties of the used material. Thus, a reverse-engineering approach is needed to optimize the LCD response. First, we show a simplified model, that we recently proposed, for the orientation of the LC molecules. The model allows the determination of the physical parameters of the LCD by means of simple intensity measurements. Second, we demonstrate the capability of the model to provide very accurate predictions of the optical transmission. Therefore, we can perform computer searches for the optimum orientation of the added polarizing elements to obtain the required optical transmission. We demonstrate the need to insert wave plates in front and behind the LCD to obtain either amplitude-only or phase-only regimes with the LCD. Finally, we show the application of the optimized LCD to display images and filters in optical image processing, as well as we show the design of diffractive optical elements and apodizers.

Registro:

Documento: Conferencia
Título:Optimization of liquid crystal displays behavior in optical image processing and in diffractive optics
Autor:Campos, J.; Márquez, A.; Nicolás, J.; Moreno, I.; Iemmi, C.; Escalera, J.C.; Davis, J.A.; Yzuel, M.J.; Refregier P.; Javidi B.; Ferreira C.; Vallmitjana S.
Ciudad:Valencia
Filiación:Dept. Física, Univ. Autònoma de Barcelona, 08193 - Bellaterra (Barcelona), Spain
Dept. Ciencia, Universidad Miguel, Hernández, Elche (Alicante), Spain
Dept. Física, Universidad de Alicante, Spain
Fac. de Cie. Exp. y Naturales, Universidad de Buenos Aires, Argentina
Dept. of Physics, San Diego State University, San Diego, United States
Palabras clave:Amplitude-only modulation; Correlation; Diffractive optical elements; Liquid crystal displays; Optical pattern recognition; Phase-only modulation; Programmable apodizers; Spatial light modulators; Amplitude modulation; Diffractive optics; Eigenvalues and eigenfunctions; Image analysis; Light modulation; Light polarization; Light transmission; Mathematical models; Nematic liquid crystals; Optical character recognition; Optical correlation; Optical filters; Optimization; Phase modulation; Quantum optics; Reverse engineering; Correlation methods; Density (optical); Diffractive optical elements; Geometrical optics; Image processing; Information systems; Light; Light modulation; Light transmission; Liquid crystal displays; Liquids; Modulation; Nematic liquid crystals; Optical correlation; Optical data processing; Optical properties; Pattern recognition; Reverse engineering; Amplitude-only modulation; Optical image processing; Optical pattern recognition; Phase-only modulation; Programmable apodizers; Liquid crystal displays; Light modulators; Apodizers; Intensity measurements; Optical image processing; Optical pattern recognition; Phase-only modulation; Physical parameters; Spatial light modulators; Twisted nematic-liquid crystal displays
Año:2001
Volumen:81 CR
Página de inicio:335
Página de fin:364
Título revista:Optoelectronic Information Processing: Optics for Information Systems
Título revista abreviado:Proc SPIE Int Soc Opt Eng
ISSN:0277786X
CODEN:PSISD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v81CR_n_p335_Campos

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Citas:

---------- APA ----------
Campos, J., Márquez, A., Nicolás, J., Moreno, I., Iemmi, C., Escalera, J.C., Davis, J.A.,..., Vallmitjana S. (2001) . Optimization of liquid crystal displays behavior in optical image processing and in diffractive optics. Optoelectronic Information Processing: Optics for Information Systems, 81 CR, 335-364.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v81CR_n_p335_Campos [ ]
---------- CHICAGO ----------
Campos, J., Márquez, A., Nicolás, J., Moreno, I., Iemmi, C., Escalera, J.C., et al. "Optimization of liquid crystal displays behavior in optical image processing and in diffractive optics" . Optoelectronic Information Processing: Optics for Information Systems 81 CR (2001) : 335-364.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v81CR_n_p335_Campos [ ]
---------- MLA ----------
Campos, J., Márquez, A., Nicolás, J., Moreno, I., Iemmi, C., Escalera, J.C., et al. "Optimization of liquid crystal displays behavior in optical image processing and in diffractive optics" . Optoelectronic Information Processing: Optics for Information Systems, vol. 81 CR, 2001, pp. 335-364.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v81CR_n_p335_Campos [ ]
---------- VANCOUVER ----------
Campos, J., Márquez, A., Nicolás, J., Moreno, I., Iemmi, C., Escalera, J.C., et al. Optimization of liquid crystal displays behavior in optical image processing and in diffractive optics. Proc SPIE Int Soc Opt Eng. 2001;81 CR:335-364.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v81CR_n_p335_Campos [ ]