Characterization and modeling of static compound speckle in laser projection display

XU Mei-fang1; WANG Wei-biao2; GAO Wen-hong1; SHI Yun-bo1

doi:10.3788/OPE.20132112.3021

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Characterization and modeling of static compound speckle in laser projection display

更新时间：2020-08-12

- Characterization and modeling of static compound speckle in laser projection display
- Optics and Precision Engineering Vol. 21, Issue 12, Pages: 3021-3028(2013)
- 作者机构：
  
  1. 中北大学仪器科学与动态测试教育部重点实验室，电子测试技术重点实验室，山西太原 030051
  2. 山西傲维光视光电股份有限公司，山西太原 030032
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132112.3021
  CLC： O436;TH741.5
- Received：29 May 2013，
  
  Revised：15 July 2013，
  
  Published Online：25 December 2013，
  
  Published：25 December 2013
- 稿件说明：
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徐美芳, 王维彪, 高文宏, 石云波. 激光投影显示中静态复合散斑的表征与建模[J]. 光学精密工程, 2013,21(12): 3021-3028

XU Mei-Fang, WANG Wei-Biao, GAO Wen-Hong, DAN Yun-Bei. Characterization and modeling of static compound speckle in laser projection display[J]. Editorial Office of Optics and Precision Engineering, 2013,21(12): 3021-3028
徐美芳, 王维彪, 高文宏, 石云波. 激光投影显示中静态复合散斑的表征与建模[J]. 光学精密工程, 2013,21(12): 3021-3028 DOI： 10.3788/OPE.20132112.3021.

XU Mei-Fang, WANG Wei-Biao, GAO Wen-Hong, DAN Yun-Bei. Characterization and modeling of static compound speckle in laser projection display[J]. Editorial Office of Optics and Precision Engineering, 2013,21(12): 3021-3028 DOI： 10.3788/OPE.20132112.3021.

摘要

对激光投影显示系统中形成散斑的光学系统进行了简化。采用理论与实验相结合的方式，用简化的光学系统分析了复合散斑的形成机理和有效表征方法。基于散斑对比度分析法，对影响复合散斑对比度的4个重要因素，即入射光束的光斑直径，散射片与屏幕之间的距离，屏幕上粗糙散斑颗粒和屏幕表面的精细散斑颗粒进行了系统实验分析，并通过实验数据确定了这些因素与复合散斑对比度的函数关系。基于统计分析，研究了复合散斑的构成成份，提出了粗糙散斑颗粒与精细散斑颗粒对复合散斑的贡献模型，并通过实验验证了其可行性。实验结果为有效抑制激光投影显示中的复合散斑提供了实验依据。

Abstract

The optical system which produces speckles in a laser projection display system was simplified. By combining theories and practices

the simplified system was used to analyze the formation mechanism of a compound speckle and its effective characterization. Based on the speckle contrast analysis method

four important factors affecting the contrast of the compound speckles were analyzed by the experiments

namely

the spot diameter of an incident light beam

the distance between diffuser and screen

the coarse speckle granule on the screen and the fine speckle granule above the screen. Then

the contrasts of the compound speckles as a function of these parameters were determined by the experimental data. After researching the constitute of the compound speckle

a relational model based on contribution of the coarse granule and the fine granule on the compound speckle was presented by statistical analysis method and confirmed by an experiment. Obtained results provide an effective experimental basis for the speckle suppression in the laser projection display.

关键词

Keywords

references

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