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Applied Optics

Applied Optics


  • Vol. 42, Iss. 31 — Nov. 1, 2003
  • pp: 6335–6341

Application of wire-grid polarizers to projection displays

Xing-Jie Yu and Hoi-Sing Kwok  »View Author Affiliations

Applied Optics, Vol. 42, Issue 31, pp. 6335-6341 (2003)

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We have measured the optical properties of wire-grid polarizers (WGPs). The implications of these results to the application of WGPs in projectors that use reflective light valves are discussed. In particular, the brightness and the contrast ratio of the projection system are investigated as functions of the angle of incidence of the light beam onto the WGP. It was found that the optimal incident angle is dependent on the physical design of the wire grids. In the sample that we describe, the optimal incident angle was 35° instead of 45°. At the optimal incident angle, both the transmission and the reflection extinction ratios can be quite good. However, WGPs suffer from the drawback of free-carrier absorption by the metal grid.

© 2003 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.3720) Optical devices : Liquid-crystal devices

Original Manuscript: August 19, 2002
Revised Manuscript: July 23, 2003
Published: November 1, 2003

Xing-Jie Yu and Hoi-Sing Kwok, "Application of wire-grid polarizers to projection displays," Appl. Opt. 42, 6335-6341 (2003)

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