Design of a polarized head-mounted projection display using FLCOS micro displays

Rui Zhang, Hong Hua

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Head-mounted projection display (HMPD) technology, as an alternative to conventional head mounted displays (HMD), offers the potential of designing wide field-of-view (FOV) optical see-through HMDs. Due to multiple passes through a beamsplitter, however, existing HMPD designs suffer from low luminance efficiency and thus the displayed image is lack of brightness and contrast. The design of a polarized head-mounted projection display (p-HMPD) was recently proposed. The major departure of a p-HMPD design from other existing HMPD systems is the usage of polarization management to minimize light loss through beamsplitting. A p-HMPD consists of a pair of projections lenses, microdisplays, polarization control elements, and retroreflective sheeting material as a projection screen. In this paper, we explore the usage of a ferroelectric liquid-crystal-on-silicon (FLCOS) microdisplay as the image source and present a compact design of an illumination unit with double telecentric optics to achieve highly bright and uniform illumination on the FLCOS microdisplay. The key contribution of this design lies in the compactness which is a critical factor in HMD systems. The first-order optics and the transformation of polarization in the design will be described in detail. The simulation of the illumination unit will be shown and its luminous efficiency and uniformity will be discussed. Based on this illumination engine, we will further describe the design of a compact projection lens and discuss the overall performance of the optics.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6489
DOIs
StatePublished - 2007
EventProjection Displays XII - San Jose, CA, United States
Duration: Jan 24 2007Jan 25 2007

Other

OtherProjection Displays XII
CountryUnited States
CitySan Jose, CA
Period1/24/071/25/07

Fingerprint

Liquid crystals
Ferroelectric materials
projection
Display devices
liquid crystals
Silicon
silicon
Lighting
illumination
Optics
Polarization
optics
display devices
Luminance
Lenses
Projection screens
polarization
Helmet mounted displays
lenses
helmet mounted displays

Keywords

  • Head-mounted display
  • Head-mounted projection display
  • Light engine
  • Projection lens

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Zhang, R., & Hua, H. (2007). Design of a polarized head-mounted projection display using FLCOS micro displays. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6489). [64890B] https://doi.org/10.1117/12.701057

Design of a polarized head-mounted projection display using FLCOS micro displays. / Zhang, Rui; Hua, Hong.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6489 2007. 64890B.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, R & Hua, H 2007, Design of a polarized head-mounted projection display using FLCOS micro displays. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6489, 64890B, Projection Displays XII, San Jose, CA, United States, 1/24/07. https://doi.org/10.1117/12.701057
Zhang R, Hua H. Design of a polarized head-mounted projection display using FLCOS micro displays. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6489. 2007. 64890B https://doi.org/10.1117/12.701057
Zhang, Rui ; Hua, Hong. / Design of a polarized head-mounted projection display using FLCOS micro displays. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6489 2007.
@inproceedings{51a9180e47ea429fa0b0c971a0dbcebb,
title = "Design of a polarized head-mounted projection display using FLCOS micro displays",
abstract = "Head-mounted projection display (HMPD) technology, as an alternative to conventional head mounted displays (HMD), offers the potential of designing wide field-of-view (FOV) optical see-through HMDs. Due to multiple passes through a beamsplitter, however, existing HMPD designs suffer from low luminance efficiency and thus the displayed image is lack of brightness and contrast. The design of a polarized head-mounted projection display (p-HMPD) was recently proposed. The major departure of a p-HMPD design from other existing HMPD systems is the usage of polarization management to minimize light loss through beamsplitting. A p-HMPD consists of a pair of projections lenses, microdisplays, polarization control elements, and retroreflective sheeting material as a projection screen. In this paper, we explore the usage of a ferroelectric liquid-crystal-on-silicon (FLCOS) microdisplay as the image source and present a compact design of an illumination unit with double telecentric optics to achieve highly bright and uniform illumination on the FLCOS microdisplay. The key contribution of this design lies in the compactness which is a critical factor in HMD systems. The first-order optics and the transformation of polarization in the design will be described in detail. The simulation of the illumination unit will be shown and its luminous efficiency and uniformity will be discussed. Based on this illumination engine, we will further describe the design of a compact projection lens and discuss the overall performance of the optics.",
keywords = "Head-mounted display, Head-mounted projection display, Light engine, Projection lens",
author = "Rui Zhang and Hong Hua",
year = "2007",
doi = "10.1117/12.701057",
language = "English (US)",
isbn = "0819466026",
volume = "6489",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Design of a polarized head-mounted projection display using FLCOS micro displays

AU - Zhang, Rui

AU - Hua, Hong

PY - 2007

Y1 - 2007

N2 - Head-mounted projection display (HMPD) technology, as an alternative to conventional head mounted displays (HMD), offers the potential of designing wide field-of-view (FOV) optical see-through HMDs. Due to multiple passes through a beamsplitter, however, existing HMPD designs suffer from low luminance efficiency and thus the displayed image is lack of brightness and contrast. The design of a polarized head-mounted projection display (p-HMPD) was recently proposed. The major departure of a p-HMPD design from other existing HMPD systems is the usage of polarization management to minimize light loss through beamsplitting. A p-HMPD consists of a pair of projections lenses, microdisplays, polarization control elements, and retroreflective sheeting material as a projection screen. In this paper, we explore the usage of a ferroelectric liquid-crystal-on-silicon (FLCOS) microdisplay as the image source and present a compact design of an illumination unit with double telecentric optics to achieve highly bright and uniform illumination on the FLCOS microdisplay. The key contribution of this design lies in the compactness which is a critical factor in HMD systems. The first-order optics and the transformation of polarization in the design will be described in detail. The simulation of the illumination unit will be shown and its luminous efficiency and uniformity will be discussed. Based on this illumination engine, we will further describe the design of a compact projection lens and discuss the overall performance of the optics.

AB - Head-mounted projection display (HMPD) technology, as an alternative to conventional head mounted displays (HMD), offers the potential of designing wide field-of-view (FOV) optical see-through HMDs. Due to multiple passes through a beamsplitter, however, existing HMPD designs suffer from low luminance efficiency and thus the displayed image is lack of brightness and contrast. The design of a polarized head-mounted projection display (p-HMPD) was recently proposed. The major departure of a p-HMPD design from other existing HMPD systems is the usage of polarization management to minimize light loss through beamsplitting. A p-HMPD consists of a pair of projections lenses, microdisplays, polarization control elements, and retroreflective sheeting material as a projection screen. In this paper, we explore the usage of a ferroelectric liquid-crystal-on-silicon (FLCOS) microdisplay as the image source and present a compact design of an illumination unit with double telecentric optics to achieve highly bright and uniform illumination on the FLCOS microdisplay. The key contribution of this design lies in the compactness which is a critical factor in HMD systems. The first-order optics and the transformation of polarization in the design will be described in detail. The simulation of the illumination unit will be shown and its luminous efficiency and uniformity will be discussed. Based on this illumination engine, we will further describe the design of a compact projection lens and discuss the overall performance of the optics.

KW - Head-mounted display

KW - Head-mounted projection display

KW - Light engine

KW - Projection lens

UR - http://www.scopus.com/inward/record.url?scp=34248676829&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34248676829&partnerID=8YFLogxK

U2 - 10.1117/12.701057

DO - 10.1117/12.701057

M3 - Conference contribution

SN - 0819466026

SN - 9780819466020

VL - 6489

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -