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Proceedings Paper

Hybrid diffractive-refractive head-mounted display with reflective relay system using micro-liquid-cyrstal on silicon
Author(s): Huijue Zhang; Zhaoqi Wang; Qiuling Zhao; Fengyou Li; Yongjun Xie; Bo Chen; Zhenwu Lu
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Paper Abstract

As the micro-display applied to head-mounted display, the optical system not only suits for the small size of the micro-display, but also provides sufficient eye relief and exit pupil, and it becomes perplex. For settling this problem, a head-mounted display, which combines a hybrid diffractive-refractive eyepiece with a reflective relay system using a liquid crystal on silicon (LCOS) with the diagonal size 18mm, was designed. Basing on a Zeiss (60°) eyepiece, and replacing the doublet of it of a diffractive-refractive doublet, a hybrid eyepiece with 20mm eye relief and 10mm exit pupil was designed. The weight greatly reduced and the optical performance improved of the eyepiece compared with the Zeiss one. Considering the space for illuminating source of LCOS, a reflective relay system was used, which includes a flat half mirror and a concave mirror. The magnifying power of the relay system also makes the optical system suitable for the small size of LCOS. The system is with high performance, sufficient exit pupil and eye relief, and reasonable size and weight in the specific application of head-mounted display.

Paper Details

Date Published: 20 September 2002
PDF: 6 pages
Proc. SPIE 4927, Optical Design and Testing, (20 September 2002); doi: 10.1117/12.471711
Show Author Affiliations
Huijue Zhang, Nankai Univ. (China)
Zhaoqi Wang, Nankai Univ. (China)
Qiuling Zhao, Nankai Univ. (China)
Fengyou Li, State Key Lab. of Applied Optics (China)
Yongjun Xie, State Key Lab. of Applied Optics (China)
Bo Chen, State Key Lab. of Applied Optics (China)
Zhenwu Lu, State Key Lab. of Applied Optics (China)


Published in SPIE Proceedings Vol. 4927:
Optical Design and Testing
Zhicheng Weng; Jose M. Sasian; Yongtian Wang, Editor(s)

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