Design of compact optical system in wide-angle head mounted display

LU Hai-ping; LIU Wei-qi; KANG Yu-si; WEI Zhong-lun; FENG Rui; FU Han-yi

doi:10.3788/OPE.20122005.0979

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Design of compact optical system in wide-angle head mounted display

Article | 更新时间：2020-08-12

- Design of compact optical system in wide-angle head mounted display
- Optics and Precision Engineering Vol. 20, Issue 5, Pages: 979-987(2012)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
  2. 中国科学院研究生院,北京 100039
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122005.0979
  CLC： TN141
- Received：28 December 2011，
  
  Revised：04 February 2012，
  
  Published Online：10 May 2012，
  
  Published：10 May 2012
- 稿件说明：
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卢海平, 刘伟奇, 康玉思, 魏忠伦, 冯睿, 付瀚毅. 超大视场头盔显示光学系统设计[J]. 光学精密工程, 2012,20(5): 979-987

LU Hai-ping, LIU Wei-qi, KANG Yu-si, WEI Zhong-lun, FENG Rui, FU Han-yi. Design of compact optical system in wide-angle head mounted display[J]. Editorial Office of Optics and Precision Engineering, 2012,20(5): 979-987
卢海平, 刘伟奇, 康玉思, 魏忠伦, 冯睿, 付瀚毅. 超大视场头盔显示光学系统设计[J]. 光学精密工程, 2012,20(5): 979-987 DOI： 10.3788/OPE.20122005.0979.

LU Hai-ping, LIU Wei-qi, KANG Yu-si, WEI Zhong-lun, FENG Rui, FU Han-yi. Design of compact optical system in wide-angle head mounted display[J]. Editorial Office of Optics and Precision Engineering, 2012,20(5): 979-987 DOI： 10.3788/OPE.20122005.0979.

摘要

设计了大视场头盔显示器的目视光学系统

用于满足头盔显示器对大视场、小畸变、高分辨率以及轻量化的苛刻要求。采用43阵列式排列、视场角为3324的12组高质量成像目镜系统拼接成单眼目视光学系统来实现系统的大视场设计。为了使系统轻量化

每个单元目镜只采用一片透镜;透镜一面采用二元光学衍射面

利用其特殊色散特性校正目镜系统色差;另一面采用非球面

用于校正目镜光学系统的初、高级单色像差。其图像源为高亮度、高分辨率的OLED微显示器。设计结果显示:单目目视光学系统水平视场达到120

垂直视场为60

角分辨率为43 pixel/();单个目镜系统传递函数在40 lp/mm处

轴上视场高于0.62

全视场高于0.1;系统畸变小于3%;系统的双目视场为16060

双目重叠视场为8060。该设计实现了超大视场

满足头盔显示光学系统的成像要求。

Abstract

An optical system for eyepieces was designed to meet the demand of a wide-angle head mounted display for the wide Field of View ( FOV)

high resolving power and compact

light-weight structure. Twelve groups of high quality eyepieces with a FOV of 3324 arraged in a 43 array were stitched in a single-eye optical system to realize the design with a wider FOV. The eyepiece was made up of a lens which contained a diffractive surface and an aspheric surface.The dispersion characteristics of binary optical elements were used to correct the chromatic aberration

and the aspheric surface was selected to correct the aberrations( spherical aberration

astigmatism

coma and distortion). Furthermore

an OLED micro-displayer was used to achieve compact and light-weight structure

and the field-of-viewing stitch was used to implement the wide field of view. Experiments show that obtained optical system can offer the horizontal FOV of 120 and the vertical FOV of 60. Moreover

the resolving power is 43 pixel/degree

the MTF is higher than 0.1 at a spatial frequency of 30 lp/ mm across the entire visual field

and the maximum distortion is less than 3% . The optical system has perfect performance and can meet the domanial demands of virtual reality display and super-wide FOV.

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references

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