中国激光, 2013, 40 (10): 1002013, 网络出版: 2013-09-25   

一种采用振动混光棒的散斑抑制技术

Speckle Suppression Method with Vibrating Light Pipe
作者单位
北京航空航天大学仪器科学与光电工程学院, 北京 100191
摘要
散斑现象严重影响激光投影的图像质量,必须加以抑制。在已有研究的基础上,提出一种基于振动混光棒的散斑抑制方法,介绍了相关理论,并通过仿真和实验验证了该方法的有效性。基于两种典型激光光源的实验结果证明:该方法无需额外整形透镜光学器件即可实现高效整形照明,缩小了系统尺寸;所得投影图像的散斑对比度不大于6%,满足视觉观察的要求;消散系统的能量利用率不小于90%。
Abstract
Speckle effect severely affects the laser projection image quality, therefore it needs to be suppressed. A speckle suppression method with a vibrating light pipe is proposed. It is theoretically analyzed, and the effectiveness is verified by simulations and experiments. Experiments are performed with two typical laser sources. The results show that, with the proposed method, no additional reforming lens is necessary for efficient rectangular illumination, which reduces the system size; the vibrating light pipe method can effectively reduce the speckle contrast to less than 6%, which is not recognizable to human eyes; the illumination efficiency of the speckle suppression system is above 90%.
参考文献

[1] 张圣涛, 高文宏, 赵鹏飞, 等. 激光阵列光源角度多样性抑制散斑方法[J]. 中国激光, 2013, 40(1): 0102005.

    Zhang Shengtao, Gao Wenhong, Zhao Pengfei, et al.. Laser speckle reduction due to angular diversity introduced by 2D laser diode array[J]. Chinese J Lasers, 2013, 40(1): 0102005.

[2] 于晓晨, 胡家升, 王连宝. 提高激光束整形质量的新方法[J]. 中国激光, 2012, 39(1): 0116002.

    Yu Xiaochen, Hu Jiasheng, Wang Lianbao. New methods for improving the quality of laser beam shaping[J]. Chinese J Lasers, 2012, 39(1): 0116002.

[3] 杨柳, 洪威, 杨川, 等. 基于光学相干层析散斑的流速测量方法[J]. 中国激光, 2012, 39(5): 0504002.

    Yang Liu, Hong Wei, Yang Chuan, et al.. Flow velocity measurement based on speckle in optical coherence tomography[J]. Chinese J Lasers, 2012, 39(5): 0504002.

[4] P H Yao, C H Chen, C H Chen. Low speckle laser illuminated projection system with a vibrating diffractive beam shaper[J]. Opt Express, 2012, 39(5): 16552-16566.

[5] O Carvalho, B Clairac, M Benderitter, et al.. Statistical speckle study to characterize scattering media: use of two complementary approaches[J]. Opt Express, 2012, 15(21): 13817-13831.

[6] S Ulyanov. Statistical properties of dynamic small-N speckles within highly scattering media[J]. J Opt Soc Am A, 2008, 25(25): 2207-2214.

[7] N A Chang, N George. Speckle in the 4F optical system[J]. Appl Opt, 2008, 47(4): A13-A20.

[8] S V Egge, U Osterberg, A Arksnes. Speckle contrast of the sum of N partially correlated speckle patterns[J]. J Opt Soc Am A, 2012, 29(6): 1188-1198.

[9] 沈婷梅, 顾瑛, 王天时, 等. 光学相干层析成像中散斑噪声减小算法[J]. 中国激光, 2008, 35(9): 1437-1440.

    Shen Tingmei, Gu Ying, Wang Tianshi, et al.. Speckle reduction in optical coherence tomography[J]. Chinese J Lasers, 2008, 35(9): 1437-1440.

[10] L Wang, T Tschudi, T Halldorsson, et al.. Speckle reduction in laser projection systems by diffractive optical elements[J]. Appl Opt, 1998, 37(10): 1770-1775.

[11] J I Trisnadi. Hadamard speckle contrast reduction[J]. Opt Lett, 2004, 15(1): 11-13.

[12] W Gao, Z Tong, V Kartashov, et al.. Replacing two-dimensional binary phase matrix by a pair of one-dimensional dynamic phase matrices for laser speckle reduction[J]. J Display Technology, 2012, 8(5): 291-295.

[13] V Yurlov, A Lapchuk, S Yun, et al.. Speckle suppression in scanning laser display[J]. Appl Opt, 2008, 47(2): 179-187.

[14] Z Liao, T Xing, G Chen, et al.. Speckle reduction in laser projection display by modulating illumination light[C]. SPIE, 2008, 6622: 662229.

[15] S V Egge, M N Akram, V Kartashov, et al.. Sinusoidal rotating grating for speckle reduction in laser projection: feasibility study[J]. Opt Eng, 2011, 50(8): 083202.

[16] D S Mehta, D N Naik, R K Singh, et al.. Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity[J]. Appl Opt, 2012, 51(12): 1894-1904.

[17] 孙鸣捷, 陆祖康. 硅基液晶激光投影中散射体散斑抑制作用的研究[J]. 中国激光, 2010, 37(3): 718-721.

    Sun Mingjie, Lu Zukang. Study of speckle suppression by a moving diffuser in liquid crystal on silicon based laser projection system[J]. Chinese J Lasers, 2010, 37(3): 718-721.

[18] Sun Mingjie, Lu Zukang. Speckle suppression with a rotating light pipe[J]. Opt Eng, 2010, 49(2): 024202.

[19] J W Goodman. Speckle Phenomena in Optics: Theory and Applications[M]. Roberts & Company Publishers, 2010, 45-48.

[20] J W Goodman. Some fundamental properties of speckle[J]. J Opt Soc Am, 1976, 66(11): 1145-1150.

[21] A Valberg. Light Vision Color[M]. John Wiley & Sons, 2005. 165-167.

[22] 孙鸣捷. 微型投影显示系统中混合光源照明技术和激光散斑消除技术的研究[D]. 杭州: 浙江大学, 2010. 88-98.

    Sun Mingjie. Mixed Sources Illumination and Laser Speckle Suppression in Micro Projection System[D]. Hangzhou: Zhejiang University, 2010. 88-98.

孙鸣捷, 于康龙, 孟照魁. 一种采用振动混光棒的散斑抑制技术[J]. 中国激光, 2013, 40(10): 1002013. Sun Mingjie, Yu Kanglong, Meng Zhaokui. Speckle Suppression Method with Vibrating Light Pipe[J]. Chinese Journal of Lasers, 2013, 40(10): 1002013.

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