点源透过率测试系统精度标定与分析

发布时间：2018-01-05 12:01

本文关键词：点源透过率测试系统精度标定与分析　出处：《物理学报》2016年11期 　论文类型：期刊论文

【摘要】：点源透过率(PST)测试系统是评价光学系统杂光抑制水平高低的关键设备,其系统精度的标定是研制难点,针对此设计了一套用于点源透过率杂散光测试系统精度标定的校准镜头.利用Tracepro建模分析了校准镜头在不同离轴角下的PST值,并用此系统对校准镜头不同离轴角下的PST值进行了实测,与其理论分析值进行比对完成设备精度的标定,同时通过实测数据分析了测试误差,给出了系统测试精度和测试极限水平.结果表明,在双柱罐内洁净度为ISO 7级的环境水平下,系统的可见光PST测试极限水平为10~(-8),测试精度对数值优于0.5,测量重复性为7.9%,根据对探测系统探测能力的评估,系统的PST极限测试水平为10~(-10).
[Abstract]:The point source transmittance (PST) measurement system is the key equipment to evaluate the level of optical system clutter suppression. The calibration of the system precision is a difficult point in the development of the system. A calibration lens is designed to calibrate the accuracy of the stray light measurement system for point source transmittance. The PST values of the calibration lens at different off-axis angles are analyzed by Tracepro modeling. Using this system, the PST values of the calibration lens at different off-axis angles are measured, and compared with the theoretical analysis values, the accuracy of the equipment is calibrated. At the same time, the measurement errors are analyzed through the measured data. The test precision and limit level of the system are given. The results show that the test limit level of visible light PST is 10 ~ 8 under the environmental level of ISO 7 in the two-column tank. The precision of the test is better than 0.5, and the repeatability of the measurement is 7.9. According to the evaluation of the detection ability of the detection system, the PST limit test level of the system is 10 ~ 10.
【作者单位】：中国科学院西安光学精密机械研究所;中国科学院大学;
【分类号】：TP274
【正文快照】： 分航天相机的杂散光测试;2008年,Ball Aerospace1引言Technologies Corp建立了一台新型杂散光测试设备SLTF,该设备引入双柱筒结构,通过反射掉空间光学系统长时间工作在视场外有强烈辐被测设备表面的散射光线达到杂散光抑制效果,射的环境下,点源透过率(point source transmit-

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