Speckle reduction using rotating random micro-lens array in laser display

FU Han-yi; LIU Wei-qi; WEI Zhong-lun; KANG Yu-si; TAO Shu-ping; FENG Rui; ZHANG Da-liang

doi:10.3788/YJYXS20153002.0359

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Speckle reduction using rotating random micro-lens array in laser display

Imaging Technology & Image Processing | 更新时间：2020-08-12

- Speckle reduction using rotating random micro-lens array in laser display
- Chinese Journal of Liquid Crystals and Displays Vol. 30, Issue 2, Pages: 359-364(2015)
- 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,中国,130033
  2. 中国科学院大学北京,中国,100049
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20153002.0359
  CLC： TN141
- Received：06 May 2014，
  
  Revised：17 July 2014，
  
  Published：05 April 2015
- 稿件说明：
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付瀚毅, 刘伟奇, 魏忠伦, 康玉思, 陶淑苹, 冯睿, 张大亮. 转动随机微透镜阵列对激光显示中散斑的抑制[J]. 液晶与显示, 2015,30(2): 359-364

FU Han-yi, LIU Wei-qi, WEI Zhong-lun, KANG Yu-si, TAO Shu-ping, FENG Rui, ZHANG Da-liang. Speckle reduction using rotating random micro-lens array in laser display[J]. , 2015,30(2): 359-364
付瀚毅, 刘伟奇, 魏忠伦, 康玉思, 陶淑苹, 冯睿, 张大亮. 转动随机微透镜阵列对激光显示中散斑的抑制[J]. 液晶与显示, 2015,30(2): 359-364 DOI： 10.3788/YJYXS20153002.0359.

FU Han-yi, LIU Wei-qi, WEI Zhong-lun, KANG Yu-si, TAO Shu-ping, FENG Rui, ZHANG Da-liang. Speckle reduction using rotating random micro-lens array in laser display[J]. , 2015,30(2): 359-364 DOI： 10.3788/YJYXS20153002.0359.

摘要

为了消除散斑现象

对随机漫射体抑制散斑的可行性进行了探讨。分析了随机微透镜阵列作为随机漫射体在光束控制和光能利用率方面的优越性

并提出了在光学系统中加入转动随机微透镜阵列的方式抑制散斑。对加入这种结构后屏幕上的散斑进行了测量

验证了此种方法可以将散斑对比度降低到1.15%

使人眼分辨不出激光散斑

提升了激光电视的观看效果

并与传统的转动匀光棒法进行对比

体现了此种方法出色的抑制散斑的能力。

Abstract

In order to eliminate disturbing speckle phenomenon

this paper discussed the feasibility of speckle reduction

analyzed the superiority in beam control and energy efficiency using the "random micro-lens array" as the random diffuser

and proposed to set the rotating "random micro-lens array" in the optical system to reduce the speckle. The speckle on the screen was measured after setting this component

this method was verified to reduce speckle contrast to 1.15% so that the eyes couldn't distinguish the laser speckle. This method can greatly improve the viewing quality of laser TV. Compared with traditional method of rotating uniform light stick

this method presented the excellent ability in speckle reduction.

关键词

Keywords

references

康玉思, 刘伟奇, 冯睿,等. 激光电视的消干涉[J]. 中国激光, 2009, 35(4): 615-619. Kang Y S, Liu W Q, Feng R, et al. Speckle contrast reduction in laser display [J]. Chinese Journal of Liquid Crystals and Displays,2008, 23(2):153-156. (in Chinese)[2] 李霞, 康玉思. 激光显示中散斑噪声的抑制[J]. 应用光学, 2010, 31(4): 648-651. Li X, Kang Y S. Speckle contrast reduction in laser display[J]. Optics and Precision Engineering, 2010, 31(4): 648-651. (in Chinese)[3] 贾琼瑶, 贺锋涛. 激光投影显示中散斑均化问题的研究[J]. 激光技术, 2013, 37(3): 400-403. Jia Q Y, He F T.Speckle homogenization in laser projection display [J]. Laser Technology, 2013, 37(3): 400-403. (in Chinese)[4] 张岳, 郝丽, 柳华, 等. 激光显示的原理与实现[J]. 光学精密工程, 2006, 14(3): 402-405. Zhang Y, Hao L, Liu H,et al. Principle and realization of laser display technique [J]. Optics and Precision Engineering, 2006, 14(3): 402-405. (in Chinese)[5] 田志辉, 刘伟奇, 李霞, 等. 激光显示中散斑的减弱[J]. 光学精密工程, 2007, 15(9): 1366-1370. Tian Z H, Liu W Q, Li X, et al. Speckle contrast reduction in laser display [J]. Optics and Precision Engineering, 2007, 15(9): 1366-1370. (in Chinese)[6] Seime L, Hardeberg J Y. Colorimetric characterization of LCD and DLP projection displays [J]. Journal of the Society for Information Display, 2003, 11(2): 349-358.[7] Goodman J W. Speckle Phenomena in Optics: Theory and Applications [M]. Roberts and Company Publishers, 2007.[8] Françon M. Laser Speckle and Applications in Optics [M]. Elsevier, 2012.[9] Baribeau R, Rioux M. Influence of speckle on laser range finders [J]. Applied Optics, 1991, 30(20): 2873-2878.

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