Design of a polarized head-mounted projection display using ferroelectric liquid-crystal-on-silicon microdisplays

Rui Zhang, Hong Hua

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

It has been a common problem in optical see-through head-mounted displays that the displayed image lacks brightness and contrast compared with the direct view of a real-world scene. This problem is aggravated in head-mounted projection displays in which multiple beam splitting and low retroreflectance of a typical retroreflective projection screen yield low luminous transfer efficiency. To address this problem, we recently proposed a polarized head-mounted projection display (p-HMPD) design where the polarization states of the light are deliberately manipulated to maximize the luminous transfer efficiency. We report the design of a compact p-HMPD prototype system using a pair of high-resolution ferroelectric liquid-crystal-on-silicon (FLCOS) microdisplays. In addition to higher resolution, the FLCOS displays have much higher optical efficiency than a transmissive-type liquid crystal display (LCD) and help to further improve the overall light efficiency and image quality. We detail the design of a compact illumination unit for the FLCOS microdisplay, also commonly referred to as the light engine, and a projection lens, both of which are key parts of the p-HMPD system. The performances of the light engine and projection lens are analyzed in detail. Finally, we present the design of a compact p-HMPD prototype using the custom-designed light engine and projection optics.

Original languageEnglish (US)
Pages (from-to)2888-2896
Number of pages9
JournalApplied Optics
Volume47
Issue number15
DOIs
StatePublished - May 20 2008

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Liquid crystals
Ferroelectric materials
projection
Display devices
liquid crystals
Silicon
silicon
engines
Engines
Lenses
Projection screens
lenses
prototypes
Liquid crystal displays
Image quality
high resolution
Luminance
Optics
display devices
Lighting

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Design of a polarized head-mounted projection display using ferroelectric liquid-crystal-on-silicon microdisplays. / Zhang, Rui; Hua, Hong.

In: Applied Optics, Vol. 47, No. 15, 20.05.2008, p. 2888-2896.

Research output: Contribution to journalArticle

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