Speckle Characterization in Laser Projector Display

Speckle Characterization in Laser Projector Display
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激光投影仪显示中的散斑表征

DOI:
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发表时间:
2012-03
期刊:
International Journal of Engineering and Physical Sciences
影响因子:
--
通讯作者:
Xuyuan Chen
Xuyuan Chen
中科院分区:
其他
文献类型:
--
作者:
Meifang Xu;Yunbo Shi;Guoxian Tang;Jun Liu;Xuyuan Chen

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相干辐射从粗糙表面反射时产生散斑现象。散斑的特征在很大程度上取决于测量条件和实验装置。在本文中,我们报告的实验结果与不同的参数设置。我们研究了影响散斑对比度的因素,如F数、γ值和照相机的曝光时间,而不是像投影机透镜到屏幕的距离、观看距离等几何因素。测量结果表明,散斑对比度随着F数的减小、γ值的增大、并且轻微地受照相机的曝光时间和照相机的增益值的影响。关键词-表征,激光投影仪,散斑
Speckle phenomena results from when coherent radiation is reflected from a rough surface. Characterizing the speckle strongly depends on the measurement condition and experimental setup. In this paper we report the experimental results produced with different parameters in the setup. We investigated the factors which affects the speckle contrast, such as, F-number, gamma value and exposure time of the camera, rather than geometric factors like the distance between the projector lens to the screen, the viewing distance, etc. The measurement results show that the speckle contrast decreases by decreasing F-number, by increasing gamma value, and slightly affects by exposure time of the camera and the gain value of the camera. Keywords—Characterization, laser projector, speckle
DOI: 10.1109/jdt.2009.2027612
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影响因子: --
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