OPT OpenIR研究单元&专题: 装校技术研究中心
http://ir.opt.ac.cn:80/handle/181661/191
2024-03-29T07:52:47Z
2024-03-29T07:52:47Z
Research on two assembling methods of 650 mm SiC lightweight mirror
Wang Tao, Ren
Peng, Wang
http://ir.opt.ac.cn:80/handle/181661/97173
2024-02-28T03:07:10Z
2024-02-28T03:06:33Z
题名: Research on two assembling methods of 650 mm SiC lightweight mirror
作者: Wang Tao, Ren; Peng, Wang
摘要: <p>The primary mirror system is the key component of the high-precision optical system, and the surface accuracy of the primary mirror determines the imaging quality of the whole system. When the lightweight mirror is affected by its own weight, support mode, load and temperature, the surface shape accuracy of the primary mirror will be changed, and the assembly mode of the primary mirror is an important factor to ensure the surface shape accuracy of the primary mirror. There are usually three types of assembly modes for the primary mirror: peripheral support, central support and back support. In this paper, the supporting mode of 650mm lightweight mirror is studied, and the surface shape of the mirror is analyzed under two supporting modes (center support and back support) when the elevation of the mirror is between 0 ° and 60 °, which is affected by its own weight. Firstly, the primary mirror is modeled based on CAD; then, the CAE mesh is generated according to the CAD model with different support modes, and the structural deformation of the primary mirror under different working conditions is obtained by solving the structure of the primary mirror under different working conditions; finally, the mesh data of CAE analysis is extracted, and the mesh data is subjected to polynomial fitting to obtain the deformation of the secondary mirror in different working conditions and States. Based on the method of simulation analysis, this paper adopts a variety of simulation tools, including CAD, CAE, multidisciplinary fitting analysis software and so on. The deformation of the primary mirror under different working conditions and different support modes is obtained. When the 650 mm lightweight mirror is supported on the back, the surface shape change does not exceed RMS 0. 01 λ at different elevation angles. For the center support, the surface shape change is RMS 0. 004 λ to RMS 0. 12 λ in the elevation angle range of 0 ° to 60 °. This supporting mode has a great influence on the surface shape. Based on the simulation analysis data, the back support is used for the assembly of the 650 mm lightweight mirror, and the center support is not suitable for the assembly of the mirror. © COPYRIGHT SPIE.</p>
2024-02-28T03:06:33Z
Precise assembly and adjustment technology of fully free-form surface multi-reflection off-Axis optical system
Qin, Xing
Fu, Xihong
Yang, Fan
Shen, Zhong
Ji, Bindong
Zhang, Hongwei
Qu, Rui
http://ir.opt.ac.cn:80/handle/181661/97172
2024-02-28T03:07:43Z
2024-02-28T03:06:31Z
题名: Precise assembly and adjustment technology of fully free-form surface multi-reflection off-Axis optical system
作者: Qin, Xing; Fu, Xihong; Yang, Fan; Shen, Zhong; Ji, Bindong; Zhang, Hongwei; Qu, Rui
摘要: <p>With the rapid development of large field of view, large aperture and unobstructed space optical imaging system, the optical imaging system structure has developed from aspherical coaxial and off-Axis free surface off-Axis. Free surface is applied to multi reflective Off-Axis optical system to balance the sharply increased off-Axis aberration. Because the free-form surface does not have symmetry, the full free-form surface multi reflective Off-Axis optical system has lost the rotational symmetry of the traditional optical system in structure, resulting in more degrees of freedom in the installation and adjustment of the full free-form surface multi reflective Off-Axis optical system, the relationship between optical axes of various optical elements is complex, the system integration is more difficult, and the installation and adjustment process is difficult to monitor. Based on this, the paper proposes a precise alignment process method of the full free-form surface multi reflection Off-Axis optical system. The space global coordinate system is established through the space coordinate measurement equipment, and the precise attitude of each reflector is monitored by combining the self-Aligning Theodolite and cube mirror, and the reference transfer space position is measured by using the self-Aligning microscope and the measurement target ball. he engineering project verification shows that this assembly and adjustment process method realizes the unification of the design, processing and assembly and adjustment benchmark of the full free-form surface multi reflection Off-Axis optical system, has strong operability, reduces the difficulty of assembly and integration, and the comprehensive measurement accuracy is better than 0.01 mm. The wave aberration RMS of the final refrigeration relay long wave infrared camera system is better than 0.45 λ @ 632.8nm, meeting the design specifications. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.</p>
2024-02-28T03:06:31Z
Research on calibration method for mirror attitude and tilt monitoring system
Cao, Mingqiang
Fu, Xing
Xu, Zhichen
Ning, Xuanqi
http://ir.opt.ac.cn:80/handle/181661/97171
2024-02-28T03:08:04Z
2024-02-28T03:06:30Z
题名: Research on calibration method for mirror attitude and tilt monitoring system
作者: Cao, Mingqiang; Fu, Xing; Xu, Zhichen; Ning, Xuanqi
摘要: <p>This paper investigates a method for measuring and calibrating the mirror attitude, tilt monitoring system, and compensation lens in a diffraction camera. Firstly, a measurement network is established by installing a reference prism and a theodolite on the load-bearing plate, enabling the overall measurement of the position of the mirror relative to the camera. Then, by changing the attitude of the mirror and recording the changes in the detector point coordinates, the relationship between the direction angle of the mirror and the detector point coordinates is calculated. Then, by adjusting the compensation lens in its local coordinate system, the relationship between the compensation lens and the detector point coordinates is obtained. Finally, by substituting the above matrix into the conversion matrix formula, the conversion matrix between the direction angle of the secondary mirror and the compensation lens translation is obtained, thereby completing the calibration of the attitude. This method can directly drive the compensation lens according to the change in the position of the mirror, ensuring the imaging quality of the camera. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.</p>
2024-02-28T03:06:30Z
Computer-Aided alignment method for a four-mirror off-Axis reflective optical system
Lei, Yu
Ma, Caiwen
Shi, Yuanyuan
Hou, Xiaohua
http://ir.opt.ac.cn:80/handle/181661/97170
2024-02-28T03:08:24Z
2024-02-28T03:06:29Z
题名: Computer-Aided alignment method for a four-mirror off-Axis reflective optical system
作者: Lei, Yu; Ma, Caiwen; Shi, Yuanyuan; Hou, Xiaohua
摘要: <p>Off-Axis optical systems do not have rotational symmetry and cannot be optically centering turned by CNC machine to eliminate component tilt errors, so they are more difficult to be aligned than the coaxial optical systems. In this paper, the computer-Aided alignment technology is carried out for a four-mirror off-Axis reflective optical system. Firstly, aberration characteristic analysis is performed to obtain the relationship between the degrees of freedom for mirrors and the wavefront coefficients. Using the results of the above analysis, a segmental alignment method is proposed. Finally, the article has completed the experimental verification for the optical system alignment. The wavefront quality meets the requirement which verifies the validity of the theoretical analysis. The research results can provide effective solutions for the alignment of various off-Axis optical systems. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.</p>
2024-02-28T03:06:29Z
A high accuracy assembling method of R-C system based on reverse optimization method
Yin, Yamei
Liu, Yong
Hou, Xiaohua
Wang, Peng
http://ir.opt.ac.cn:80/handle/181661/97169
2024-02-28T03:09:10Z
2024-02-28T03:06:27Z
题名: A high accuracy assembling method of R-C system based on reverse optimization method
作者: Yin, Yamei; Liu, Yong; Hou, Xiaohua; Wang, Peng
摘要: <p>R-C optical systems have been widely used in long focal length imaging and long-distance detection fields such as aerospace, remote sensing, exploration, and space optical communication. However, the significant wavefront aberration in the edge fields of R-C optical system always restrict the imaging system in a small field of view. In this paper, the improved R-C optical system is composed of two reflective mirrors as well as three refractive elements, which can correct off-Axis aberrations in large fields of view, enable the large field of view imaging. For the high accuracy assembly, optical centering assembling technology based on optical imaging principle is applied to ensure the coaxiality between the optical axis of optical element and the rotation axis of corresponding machine part. And the reverse optimization method is carried out to compensated the wavefront aberration introduced by misalignment errors. Finally, the testing optimization result of system wavefront aberration with RMS value of center of view is 0.045λ (λ=0.6328nm), and the RMS value of off-Axis field better than 0.08λ can be achieved. © COPYRIGHT SPIE.</p>
2024-02-28T03:06:27Z
Analysis of assembly errors of optomechanical systems
Chou, Xiaoquan
Li, Zhiguo
Li, Xiaoyan
http://ir.opt.ac.cn:80/handle/181661/97167
2024-02-28T03:06:24Z
2024-02-28T03:06:24Z
题名: Analysis of assembly errors of optomechanical systems
作者: Chou, Xiaoquan; Li, Zhiguo; Li, Xiaoyan
摘要: Optomechanical system assembly is a complex process and serves as the final stage in implementing a system, playing a crucial role in determining the performance indicators of the Optomechanical system. The performance of the Optomechanical system is mainly affected by two factors: surface shape errors of optical elements and alignment errors of components, both of which are related to the assembly process. Stress is one of the main causes of surface shape errors in optical elements. During assembly, the coupling stress can cause changes in the shape of optical elements. These changes may result in surface shape deviations from the design requirements, thereby affecting the system's performance. Alignment errors of parts and components can cause assembly errors such as misalignment, tilt, and optical spacing in the optical system. These errors can have adverse effects on the optical performance of the system. The Optomechanical system assembly errors mainly include component-level assembly errors and system-level assembly errors. To accurately analyze and estimate the assembly errors of the Optomechanical system, a small displacement torsor theory and the technique of spatial pose transformation matrix have been used to construct an error analysis model for the Optomechanical system. These models can assist engineers in predicting and controlling assembly errors, improving the performance of the Optomechanical system, and guiding the design and production of the Optomechanical system. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
2024-02-28T03:06:24Z
Research on spatial positioning technology of large size anomalous off-Axis optical element
Peng, Wang
Fan, Yang
Bin-Dong, Ji
Wang-Tao, Ren
Xing, Song
http://ir.opt.ac.cn:80/handle/181661/97166
2024-02-28T03:10:12Z
2024-02-28T03:06:23Z
题名: Research on spatial positioning technology of large size anomalous off-Axis optical element
作者: Peng, Wang; Fan, Yang; Bin-Dong, Ji; Wang-Tao, Ren; Xing, Song
摘要: <p>In this paper, the spatial positioning technology of off-Axis optical elements is studied for the installation and positioning requirements of the off-Axis mirror and the anomalous off-Axis ellipsoid mirror in an optical system. In this paper, the assembly coordinate system is established according to the global coordinate system of space optical system. The key optical parameters of the optical system are accurately measured and controlled by the theodolite, laser tracker, interferometer and other instruments, so as to realize the precise positioning of the special-shaped off-Axis optical element. Secondly, the optical characteristics of the system are analyzed by computer aided setting technology, and the optical misalignment is calculated according to the system wave aberration detection results. Thirdly, the attitude of optical element is adjusted precisely according to the amount of optical misalignment. After many iterations calculation and precision adjustment, the optical index requirements are finally achieved. The spatial positioning method of large size anomalous off-Axis optical elements proposed in this paper provides an effective method for the spatial positioning and system assembly of anomalous off-Axis optical elements in large aperture optical systems. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.</p>
2024-02-28T03:06:23Z
Modular registration and performance evaluation of the digital twin
Chou, Xiaoquan
Li, Xiaoyan
http://ir.opt.ac.cn:80/handle/181661/97038
2023-12-26T03:25:02Z
2023-12-26T03:21:17Z
题名: Modular registration and performance evaluation of the digital twin
作者: Chou, Xiaoquan; Li, Xiaoyan
摘要: <p>Complex optical systems are composed of multiple subsystem modules, and high-precision registration between modules is the key to ensuring the overall performance indicators of optical systems. The registration between submodules in the engineering optical system is divided into two aspects: spatial geometric coordination and optical feature registration. The relationship between spatial geometric alignment and optical feature registration is introduced, and the spatial geometric registration between subsystems is the linear relationship. The subsystem model is established using data matrix, and the subsystem data matrix and physical entities are mapped to each other to form the digital twin. The registration between subsystems with each other applies matrix changes to establish the mathematical model, and each subsystem forms a large complex engineering optical system through registration. The error affecting the registration performance of the subsystem, the relationship between the registration error and the performance of the entire optical system, and the error data transfer between the physical entity and the digital matrix model were systematically analyzed, as well as the mathematical model and the entity registration scheme were optimized and corrected. © 2023 SPIE.</p>
2023-12-26T03:21:17Z
一种镜组倾斜角度快速定量修研装置
郑祥柯
康世发
何磊
李硕
贾鑫
杨宾宏
http://ir.opt.ac.cn:80/handle/181661/96990
2023-12-01T08:06:45Z
2023-12-01T08:06:45Z
题名: 一种镜组倾斜角度快速定量修研装置
作者: 郑祥柯; 康世发; 何磊; 李硕; 贾鑫; 杨宾宏
摘要: 本实用新型提供一种镜组倾斜角度快速定量修研装置,解决现有对平面镜组凸台研磨方法易造成底面不平整,研磨效率较低、检测较为繁琐的问题。该装置包括工作平台及设在工作平台上的测试单元和研磨单元;测试单元包括标准角度块、设在工作平台上的基准底板和显示器、设在基准底板上的自准直测微光管;显示器与自准直测微光管连接,标准角度块的角度与标准研磨平面组中平面镜与底板要求夹角相同;研磨单元包括研磨平台、滑动底板及N个定位螺杆;研磨平台设置在工作平台上;滑动底板通过滑动组件设置在研磨平台上;N个定位螺杆分别穿设在滑动底板N个压紧螺纹孔中,且N个定位螺杆下端的定位柱分别伸入待研磨平面镜组底板上表面的N个固定孔中。
2023-12-01T08:06:45Z
一种激光光纤耦合调试的装置
曹明强
侯晓华
雷昱
刘勇
李小燕
张鸽
韩娟
http://ir.opt.ac.cn:80/handle/181661/96982
2023-11-30T09:12:50Z
2023-11-30T09:12:50Z
题名: 一种激光光纤耦合调试的装置
作者: 曹明强; 侯晓华; 雷昱; 刘勇; 李小燕; 张鸽; 韩娟
摘要: 本实用新型提供一种光纤耦合调试的装置,主要解决了现有技术无法联调同轴度和偏振态的问题。本实用新型利用包括用于测试待调镜组和激光光纤同轴度的测试装置、用于检测待调镜组和激光光纤偏振态的检测装置、以及根据测试及检测结果调节并固定待调镜组和激光光纤的装调工装进行同轴度和偏振态的检测和联调;该光纤耦合调试的装置调节简单,便于操作,效率高。
2023-11-30T09:12:50Z