1.中国科学院长春光学精密机械与物理研究所,吉林 长春 130031
2.中国科学院大学,北京 100049
3.光学系统先进制造全国重点实验室,吉林 长春 130031
[ "刘昊天(2000-),男,山东滨州人,硕士,2022年于济南大学获得学士学位,现就读于中国科学院大学长春精密机械与物理研究所,主要从事光学精密装调方面的研究。E-mail: liuht512@163.com" ]
[ "曾雪锋(1987-),男,江西抚州人,博士,研究员,2009年于南京理工大学获得学士学位,2014年于中国科学院长春光学精密机械与物理研究所获得博士学位,主要从事先进光学制造技术方面的研究。E-mail:zxf@ciomp.ac.cn" ]
收稿:2026-01-14,
修回:2026-02-03,
纸质出版:2026-04-25
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刘昊天,曾雪锋,李雯研等.光学元件六自由度位姿高精度检测方法[J].光学精密工程,2026,34(08):1232-1244.
LIU Haotian,ZENG Xuefeng,LI Wenyan,et al.High-precision measurement method for 6-DOF pose of optical components[J].Optics and Precision Engineering,2026,34(08):1232-1244.
刘昊天,曾雪锋,李雯研等.光学元件六自由度位姿高精度检测方法[J].光学精密工程,2026,34(08):1232-1244. DOI: 10.37188/OPE.20263408.1232. CSTR: 32169.14.OPE.20263408.1232.
LIU Haotian,ZENG Xuefeng,LI Wenyan,et al.High-precision measurement method for 6-DOF pose of optical components[J].Optics and Precision Engineering,2026,34(08):1232-1244. DOI: 10.37188/OPE.20263408.1232. CSTR: 32169.14.OPE.20263408.1232.
针对光刻机、精密装配及空间光学系统等领域中对光学元件位姿进行纳米级位移与微弧度级角度高精度测量的需求,以及现有方法在实现多自由度同步、集成化测量方面的不足,本文提出并验证了一种基于多通道差分激光干涉的测量系统。通过构建七路干涉仪布局与统一数学模型,实现了光学元件六自由度位姿包括位移与转角信息的同步解算。仿真表明,在理想条件下,系统在
X
,
Y
,
Z
方向的平移测量均方根误差优于3.384 nm,转角测量误差优于4.616 μrad。实验验证中,静态环境下位移与角度稳定性RMS分别达7 nm与16.4 μrad;为考查系统对微小位移变化的响应特性,在位移台驱动下施加亚微米级阶跃位移输入,对系统输出进行统计分析表明,在阶跃前后稳定区间内,系统位移输出具有良好的重复性与稳定性,其RMS波动维持在纳米量级。此外,在角度变化为
-
300 μrad与
-
500 μrad阶跃输入下,系统输出与自准直仪参考值之间的线性相关系数分别为0.984与0.937,残差RMS控制在4
4 μrad以内。该系统结构紧凑、抗干扰强、线性度高,适用于上述高精度场景中的实时位姿监测。未来将开展多自由度耦合误差标定与动态环境适应性研究,以进一步提升系统的实用性与可靠性。
To meet the demand for nanometer-level displacement and microradian-level angular high-precision measurement of optical components in fields such as lithography systems, precision assembly, and space optics, and to address the limitations of existing methods in achieving multi-degree-of-freedom (DOF) synchronous and integrated measurement, this paper proposed and experimentally validated a measurement system based on multi-channel differential laser interferometry. By designing a seven-channel interferometer configuration and establishing a unified mathematical model, simultaneous solving of six-DOF pose parameters—including translational displacements and rotational angles—of optical components was realized. Simulation results indicated that, under ideal conditions, the root-mean-square (RMS) errors of translational measurements in the
X
,
Y
, and
Z
directions were better than 3.384 nm, while the angular measurement errors did not exceed 4.616 μrad. Experimental verification demonstrated that, in a static environment, the RMS stability of displacement and angular measurements reached 7 nm and 16.4 μrad, respectively. Under step inputs of
-
300 μrad and
-
500 μrad, the linear correlation coefficients between the system outputs and autocollimator reference values were 0.984 and 0.937, respectively, with residual RMS errors maintained within 44 μrad. The proposed system featured a compact structure, strong resistance to environmental disturbances, and high linearity, making it suitable for real-time pose monitoring in high-precision applications.Future work will focus on multi-DOF coupling error calibration and adaptability under dynamic environments to further enhance the practicality and reliability of the system.
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