大屏背投激光显示广角镜头的设计

陈旭; 冯玉涛; 刘伟奇; 魏忠伦; 康玉思

doi:10.3788/OPE.20111905.0945

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大屏背投激光显示广角镜头的设计

现代应用光学 | 更新时间：2020-08-12

- 大屏背投激光显示广角镜头的设计
- Design of large dimension and rear projecting lens in laser display system
- 光学精密工程 2011年19卷第5期页码：945-950
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春 130033
  2. 中国科学院研究生院, 北京100049
  3. 中国科学院西安光学精密机械研究所光谱成像技术重点实验室,陕西西安 710119
- 作者简介：
- 基金信息：
  
  国家863高技术研究发展计划资助项目(No.2007AA03011)()
- DOI：10.3788/OPE.20111905.0945
  中图分类号： TN27;TN873
- 收稿日期：2010-06-24，
  
  修回日期：2010-08-06，
  
  网络出版日期：2011-05-26，
  
  纸质出版日期：2011-05-26
- 稿件说明：
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陈旭, 冯玉涛, 刘伟奇, 魏忠伦, 康玉思. 大屏背投激光显示广角镜头的设计[J]. 光学精密工程, 2011,19(5): 945-950

CHEN Xu, FENG Yu-tao, LIU Wei-qi, WEI Zhong-lun, KANG Yu-si. Design of large dimension and rear projecting lens in laser display system[J]. Editorial Office of Optics and Precision Engineering, 2011,19(5): 945-950
陈旭, 冯玉涛, 刘伟奇, 魏忠伦, 康玉思. 大屏背投激光显示广角镜头的设计[J]. 光学精密工程, 2011,19(5): 945-950 DOI： 10.3788/OPE.20111905.0945.

CHEN Xu, FENG Yu-tao, LIU Wei-qi, WEI Zhong-lun, KANG Yu-si. Design of large dimension and rear projecting lens in laser display system[J]. Editorial Office of Optics and Precision Engineering, 2011,19(5): 945-950 DOI： 10.3788/OPE.20111905.0945.

摘要

研究了背投激光显示广角投影镜头的设计

并给出了1个162.6 cm(64 in)背投激光显示广角镜头的设计实例。投影镜头前的光学引擎采用数字光处理显示方式

并应用数字微镜晶片(DMD)进行数字光学处理。系统焦距为7.38 mm;设计波长为

C;F

数为2.46;全视场达到100;在空间调制器DMD的Nyquist频率处

90%以上视场的MTF

0.6。系统渐晕系数为负

提高了投影显示像面边缘的光照度;全视场畸变

1.4%;1个像元尺寸内集中了点目标能量的90%以上。系统中使用了1个直角棱镜对光路进行折叠

减小了镜头长度

使棱镜展开后系统全长为259 mm。此外

该镜头只使用了1个二次项为0的非球面(高次项至8次)

保证了镜头加工的可行性。设计结果显示

本文提出的设计方法有利于降低投影系统成本

实现产业化生产。

Abstract

After comparing different structures of wide-angle projecting lenses

a wide-angle lens for 162.6 cm(64 in) rear projection laser display is designed. The focal length of the system is 7.38 mm

the wavelength used in the design is

and the full field of view reaches 100. The technical indii of the projection lens are summarized as follows: DMD (Digital Micromirror Device) is used in the light digital processing

90% MTF is greater than 0.6 at the Nyquist frequency; the barrel distortion of the system is smaller than 1.4%

and 90% of the energy in the point target is focused in a pixel dimension. Furthermore

a right angle prism is used to fold the optical path to decrease the length of the lens

so that the whole optical length of the system is 259 mm after outspreading the right angle prism. The vignetting factor of the wide angle is negative

which enhances the image illumination after projection.Moreover

an aspheric surface with the small size

zero conic constant and the maximum eight order coefficient is used to promise the feasibility of the mounting. Analytical results show that the design can decrease the production costs of the projecting system and promote the technological industrialization.

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references

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