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Applied Optics

Applied Optics


  • Vol. 41, Iss. 25 — Sep. 1, 2002
  • pp: 5230–5237

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

Jacco A. de Pooter, Hugo J. Cornelissen, and Joseph J. M. Braat  »View Author Affiliations

Applied Optics, Vol. 41, Issue 25, pp. 5230-5237 (2002)

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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.

© 2002 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(230.3990) Optical devices : Micro-optical devices
(350.3950) Other areas of optics : Micro-optics

Original Manuscript: January 28, 2002
Revised Manuscript: June 7, 2002
Published: September 1, 2002

Jacco A. de Pooter, Hugo J. Cornelissen, and Joseph J. M. Braat, "Fresnel diffraction effects in the frontlight for a liquid-crystal display," Appl. Opt. 41, 5230-5237 (2002)

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