Fresnel diffraction effects in the frontlight for a liquid-crystal display.

de Pooter, Jacco A; Cornelissen, Hugo J; Braat, Joseph J M

de Pooter, Jacco A; Cornelissen, Hugo J; Braat, Joseph J M.

Afiliación

de Pooter JA; Optics Research Group, Faculty of Applied Sciences, Delft, University of Technology, The Netherlands. j.depooter@tnw.tudelft.nl

Appl Opt ; 41(25): 5230-7, 2002 Sep 01.

Article en En | MEDLINE | ID: mdl-12211547

RESUMEN

In a new type of illumination system for reflective liquid-crystal displays, the frontlight, unwanted shadows appear in certain viewing directions. It will be shown that for an accurate description of these shadows the geometrical optics approach is not satisfactory and that Fresnel diffraction has to be taken into account. A model for the diffraction effects was developed, and the predicted results correspond well to the measurements. In addition, some remarkable effects were explained from the theory of Fresnel zones.

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Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Appl Opt Año: 2002 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Estados Unidos

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