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1.中国科学院 合肥物质科学研究院 安徽光学精密机械研究所 环境光学与技术重点实验室,安徽 合肥230031
2.安徽大学 物质科学与信息技术研究院 信息材料与智能感知安徽省实验室, 安徽 合肥 230039
Received:24 March 2022,
Revised:12 April 2022,
Published:10 July 2022
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常振,王煜,林方等.载荷探测器像元满阱参数测试[J].光学精密工程,2022,30(13):1542-1554.
CHANG Zhen,WANG Yu,LIN Fang,et al.Measurement of pixel full-well parameters of detector used on spaceborne spectrometer[J].Optics and Precision Engineering,2022,30(13):1542-1554.
常振,王煜,林方等.载荷探测器像元满阱参数测试[J].光学精密工程,2022,30(13):1542-1554. DOI: 10.37188/OPE.20223013.1542.
CHANG Zhen,WANG Yu,LIN Fang,et al.Measurement of pixel full-well parameters of detector used on spaceborne spectrometer[J].Optics and Precision Engineering,2022,30(13):1542-1554. DOI: 10.37188/OPE.20223013.1542.
在CCD成像电路的研发过程中,为了确保CCD达到最优的满阱性能,需要不断调整CCD驱动信号参数并进行满阱测试,该过程通常需要重复几十甚至上百次。通用的光子转移曲线法需要积分球等设备搭建平场光源,系统复杂,满阱测试效率较低。提出了一种满阱测试方法——LED点测试法,该方法通过光子转移曲线法获取系统增益后,仅通过搭建LED点光源配合普通民品镜头即可实现CCD满阱测试。基于载荷CCD成像电路,使用LED点测试法进行测试。结果表明,载荷CCD的满阱电子数可达817.013ke
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,误差不大于0.643%。针对LED点测试的同组数据采用传统满阱测试方法进行测试,对比结果表明,LED点测试法和传统测试方法相对光子转移曲线法的误差分别为0.039 7%和1.9%。LED点测试法可用作简易条件下快速测量CCD满阱的通用方法,能够提升CCD成像电路的研发效率。
During the development of a charge-coupled device (CCD) imaging circuit, it is necessary to adjust the parameters of the CCD’s driving signal and repeatedly test the full-well parameters dozens or even hundreds of times to ensure the optimal full-well performance of the CCD. To achieve this, the general method employed, known as the photon transfer curve method, requires integrating a sphere and other equipment to create a flat-field light source system. However, the resulting system is complex, and hence, it is unsuitable for application in a full-well testing method during the development of an imaging system. In this paper, a novel full-well testing method, a light-emitting diode (LED) point test method, is proposed. Accordingly, CCD full-well testing can be easily realized by developing an LED point light source and common civilian lens. The results reveal that the number of full-well electrons of a spaceborne CCD can reach 817.013ke
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, and the error can be less than 0.643%. The results also indicate that the errors resulting from the LED point test method and the traditional method are, respectively, 0.0397% and 1.9% compared with the errors resulting from the photon transfer curve method. In summary, the LED point test method can be used as a general method to rapidly measure the full-well parameters of a CCD under simple conditions, and it can enhance the efficiency of CCD imaging circuit development.
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