Restraining speckle of laser imaging system in accurate measurement

REN Shu-Yan; ZHANG Zhuo; LIU Guo-Dong; ZHUANG Zhi-Tao; PU Zhao-Bang

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Restraining speckle of laser imaging system in accurate measurement

更新时间：2020-08-12

- Restraining speckle of laser imaging system in accurate measurement
- Optics and Precision Engineering Vol. 15, Issue 3, Pages: 331-336(2007)
- 作者机构：
  
  哈尔滨工业大学自动测试与控制系,黑龙江哈尔滨,150001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN247
- Received：22 January 2007，
  
  Revised：04 February 2007，
  
  Published Online：30 June 2007，
  
  Published：30 June 2007
- 稿件说明：
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REN Shu-Yan, ZHANG Zhuo, LIU Guo-Dong, et al. Restraining speckle of laser imaging system in accurate measurement[J]. Optics and precision engineering, 2007, 15(3): 331-336.
DOI：

REN Shu-Yan, ZHANG Zhuo, LIU Guo-Dong, et al. Restraining speckle of laser imaging system in accurate measurement[J]. Optics and precision engineering, 2007, 15(3): 331-336. DOI：

摘要

对采用激光照明的测量系统中散斑形成的三个重要因素

即入射光束的相干性、相位差和偏振特性进行了详细的理论分析

并给出了这些因素与散斑对比度的变化关系。计算表明

相干长度降到低于1 mm时

散斑对比度减小到0.5左右

得到的图像细节相对比较清楚

易于检测。基于计算分析

提出了相应的解决及优化方法

为抑制散斑、提高激光照明质量和测量准确性提供了理论依据。

Abstract

Three factors of restraining speckle noise in detection system

coherence

phase difference and polarization of the incident ray

were analyzed in detail

and the relations between these factors and speckle contrast were also presented. Calculation results show that when coherence length is less than 1 mm

speckle contrast is reduced to 0.5

which is advantageous to obtaining excellent measuring accuracy and keeping good details for a image. On the basis of theoretical analysis

the solution and optimization to reduce speckle was proposed to restrain speckle noise

improve illumination quality and enhance accuracy of measurement.

关键词

Keywords

references

. 张岳,郝丽,柳华等. 激光显示原理与实现[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]. Opt. Precision Eng., 2006, 14 (3): 402 - 405.(in Chinese)

. 王晓东,刘文耀,金月寒,等. 基于DSP和CPLD的激光雷达图像采集和显示集成系统[J]. 光学精密工程,2004, 12 (2) : 190 - 194. WANG X D, LIU W Y, JIN Y H, et al.. Laser radar image acquisition and display integrated system based on DSP and CPLD[J]. Opt. precision Eng., 2004, 12 (2) : 190-194. (in Chinese)

. 毕勇,孙志培,李瑞宁,等. 高平均功率腔内和频蓝光Nd:YAG激光器[J]. 光学精密工程,2005,13(1):16-21. BI Y,SUN ZH P,LI R N,et al..High power blue Nd:YAG laser by intracavity summing frequency[J]. Opt. Precision Eng.,2005,13(1):16-21.(in Chinese)

. 杨超君,周建忠,张永康,等. 激光冲击金属板料变形的最小激光能量估算及其实验研究[J]. 光学精密工程,2006,14(3):396-401. YANG CH J,ZHOU J ZH,ZHANG Y K,et al.. Study on calculation of minimum laser energe of sheet metal deformation by laser shock forming[J]. Opt. Precision Eng.,2006,14(3):396-401.(in Chinese)

. 卢启鹏,侯宝忠,朱琳琳. 半导体激光血管内照射治疗静脉曲线的机理研究[J]. 光学精密工程,2006,14(4):589-593. LU Q P,HOU B ZH,ZHU L I. Mechanism of varicosity treated by semiconductor laser intravenous irradiation[J]. Opt. Precision Eng.,2006,14(4):589-593.(in Chinese)

. PERINA J. Coherence of Light[M]. Beijing Science Press, 1986:21-23.

. MCKINNEY J D, WEBSTER M A, WEBB K J, et al.. Characterization and imaging in optically scattering media by use of laser speckle and a variable-coherence source[J]. Opt. Lett., 2000, 25(1): 4 - 6.

. JUNG T, DMITRY A, GARIF G. Speckle contrast measurements with changeable coherence length: the method of scattering media probing[J]. SPIE, 2002, 4705: 137-146.

. HARIHAEAN S, PRABBAKAR P, YOUNG L. Modeling low-coherence enhanced backscattering (LEBS) using photon random walk model of light scattering[J]. SPIE, 2006, 6085, 650-803.

. GANG Y, WANG LH. Multiple scattering in optical coherence tomography signal: Monte Carlo modeling and experimental study[J]. SPIE, 1999, 3598: 10 - 17.

. ZHANG X Q, XU L J, HOCK Y J. Monte Carlo simulation of measuring capillary blood flow with diffusing light correlation[J]. SPIE, 2002, 4916: 346 - 351.

. CYNTHIAY Y, DEBORAH A H, LARRY C A. Mutual coherence function based on a bump spectrum for refractive-index fluctuations[J]. SPIE, 1993, 968: 401 - 412.

. ROSTALAKI H J, EPPLE A, FELDMANN H. Use of diffractive optical elements in lithographic projection lenses[J]. SPIE, 2005, 5962: 375 - 383.

. 李凤友, 李红军, 卢振武,等. 激光直写系统焦斑整形的研究[J]. 光学精密工程,2001, 9 (5) : 14 - 18. LI F Y, LI H J, LU Z W, et al.. Binary laser direct writing system and its applications[J]. Opt. Precision Eng., 2001, 9(5): 14 - 18. (in Chinese)

. DMITRY A, ZIMNYAK O W, RUIKANG K W, et al.. Characterization of the transport properties of dense scattering media on the basis of low-coherence interferometry[J]. SPIE, 2005, 5690: 308 - 317.

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