Spatial light modulators for high-brightness projection displays

Kuniharu Takizawa, Takanori Fujii, Hiroshi Kikuchi, Hideo Fujikake, Masahiro Kawakita, Yoshiyuki Hirano, Fumio Sato

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We fabricated polymer-dispersed liquid-crystal light valves (PDLCLV’s) consisting of a 30-mm-thick hydrogenated amorphous-silicon film and a 10-mm-thick polymer-dispersed liquid-crystal (PDLC) film composed of nematic liquid-crystal (LC) microdroplets surrounded by polymer. The device can modulate high-power reading light, because the PDLC becomes transparent or opalescent independent of the polarization state of the reading light when either sufficient or no writing light is incident on the PDLCLV. This device has a limiting resolution of 50 lpymm (lp indicates line pairs), a reading light efficiency of 60%, a ratio of intensity of light incident on the PDLC layer to intensity of light radiated from the layer, and an extinction ratio of 130:1. The optically addressed video projection system with three PDLCLV’s, LC panels of 1048 × 480 pixels as input image sources, a 1-kW Xe lamp, and a schlieren optical system projected television (TV) pictures of 600 and 450 TV lines in the horizontal and the vertical directions on a screen with a diagonal length of 100 in. The total output flux of this system was 1500 lm.

Original languageEnglish
Pages (from-to)5646-5655
Number of pages10
JournalApplied optics
Volume38
Issue number26
DOIs
Publication statusPublished - 1999 Sep 10
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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