| 四边型位置敏感探测器位置公式的改进 |
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| 引用本文： | 陶忠祥,单纯玉,宋建中. 四边型位置敏感探测器位置公式的改进[J]. 光子学报, 2005, 34(4): 507-510 |
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| 作者姓名： | 陶忠祥 单纯玉 宋建中 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所图像研究室,长春,130033;空军第二航空学院航空军械工程系,长春,130022;中国科学院长春光学精密机械与物理研究所图像研究室,长春,130033 |
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| 摘 要： | 四边形位置敏感探测器（PSD）的传统位置计算公式不能正确反映实际光斑位置，存在严重的枕形失真，需要进行复杂的修正.基于Lucovsky方程的解析解，提出了改进型的PSD计算公式，结果表明，采用改进型公式可以使用少量数据完成对PSD的非线性修正，极大地提高PSD中央大部区域的线性度.对于1×1 cm2的PSD，在60%光敏面的区域内均方根误差小于3 μm，非线性度小于0.05%，该公式适用于所有的四边形PSD，对于PSD的实际应用具有重要意义.
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| 关 键 词： | 位置敏感探测器 位置误差 线性度 修正 |
| 收稿时间： | 2004-02-17 |
| 修稿时间： | 2004-02-17 |
Modification of Position Calculating Equations of Tetra-lateral Position Sensitive Detectors |
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| Tao Zhongxiang,Shan Chunyu,Song Jianzhong. Modification of Position Calculating Equations of Tetra-lateral Position Sensitive Detectors[J]. Acta Photonica Sinica, 2005, 34(4): 507-510 |
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| Authors: | Tao Zhongxiang Shan Chunyu Song Jianzhong |
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| Affiliation: | ( Lab of Image Processing,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun )
( Department of Ordnance,the Second Aeronautical College of the Air Force,Changchun ) |
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| Abstract: | For tetra-lateral position sensitive detectors (PSD), the calculated positions obtained with the conventional equations of position calculation do not correspond to the real spot positions., and have serious pincushion distortion. A modified equation is proposed in terms of the analytical solutions of Lucovsky equation. According to the results, the correction of the PSD can be easily achieved and the linearity can also be greatly improved in most of the central active area by the modified equation. In the 60% of the active area of 1×1 cm 2 PSD, the position root mean square (rms) error was less than 3 μm , the position non-linearity was less than 0.05%. This modified equation can be fit for all tetra-lateral PSDs. |
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| Keywords: | PSD Position error Linearity Correction |
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