A5016557723- Advanced optical system design
- Adaptive optics and wavefront sensing
- Optical Coatings and Gratings
- Optical Systems and Laser Technology
- Photonic and Optical Devices
- Optical measurement and interference techniques
- Advanced machining processes and optimization
- solar cell performance optimization
- Advanced Surface Polishing Techniques
- Planetary Science and Exploration
- Advanced Computational Techniques and Applications
- Astro and Planetary Science
- Seismic Imaging and Inversion Techniques
- Semiconductor Lasers and Optical Devices
- Geotechnical Engineering and Underground Structures
- Space Science and Extraterrestrial Life
- Photocathodes and Microchannel Plates
- Advanced Optical Imaging Technologies
- Powder Metallurgy Techniques and Materials
- Atmospheric aerosols and clouds
- Methane Hydrates and Related Phenomena
- Drilling and Well Engineering
- Data Management and Algorithms
- Technology and Security Systems
- Impact of Light on Environment and Health
Beijing University of Posts and Telecommunications
2025
China Southern Power Grid (China)
2025
China Railway Design Corporation (China)
2025
Chinese Academy of Sciences
2014-2024
Changchun Institute of Optics, Fine Mechanics and Physics
2014-2024
Jilin University
2024
Harbin Engineering University
2023
Harbin Institute of Technology
2016-2018
UNSW Sydney
1998-2000
Unobscured reflective optical systems with a wide field of view (FOV) have significant application values. However, the aberration increases increase system FOV, so FOV is difficult to design. In this paper, design method that effective in achieving off-axis three-mirror ultrawide proposed. method, expanded stepwise process, and surface freeform polynomial terms are extended based on judgment image quality some constraint conditions, obtain prospective system. A imaging focal length 1000 mm,...
We report on the design of an off-axis three-mirror freeform telescope with a large field view (FOV) based integration mirror (IM). This is continuation authors' previous work. Based aberration theory, we established suitable nonrelayed three-mirror-anastigmat initial configuration for design. For optical surface, analyzed qualitative correction ability x-y polynomial surface that can provide simple, convenient, and user-friendly relationship between term coefficients aberrations then...
An off-axis three-mirror system (OTS) was designed based on the primary mirror and tertiary (TM) integrated a single substrate in order to solve OTS drawbacks, such as alignment difficulty large opto-mechanical weight. Furthermore, an optical freeform surface that can increase optimizing degrees of freedom (DOF) applied TM achieve wide field view (FOV). example with focal length 1200 mm, F-number 12, FOV 10°×4° given, maximum wave front error (WFE) RMS 0.0126λ, indicating good imaging...
A freeform off-axis three-mirror anastigmat (TMA) optical system with a large field of view (FOV) can obtain target image information larger spatial range and more details, which is development trend within the realm space optics. The aberration increases exponentially FOV, resulting in significant increase error sensitivity for large-FOV systems. To address this issue, method designing systems FOV low proposed. gradually expanded from small initial value equal-length increments until it...
The realization of the final performance optical system depends not only on aberration correction design but more importantly control position error element during construction process. Therefore, reducing sensitivity is an important part In order to obtain with low sensitivity, this paper proposes evaluation function tilt and establishes a desensitization method for system. Taking off-axis three-mirror as example design. By comparing variation wave front (WFE) caused by before after design,...
Freeform surfaces have been used to achieve high imaging performance in recent years. Apart from the nominal performance, sensitivity is a vital factor for realizability of as-built performance. We found that freeform are not only excellent aberration correction but also enable achievement desensitization. In this paper, two merit functions, FDS and SDS, established, desensitization design method performs modulation by using (DMF), proposed. This elucidates reasons behind enabling low taps...
<title>Abstract</title> To quickly and effectively predict the unknown top earth pressure of high-filled cut-and-cover tunnels (HFCCTs), a prediction model HFCCTs based on machine learning was proposed. The data set established by taking Poisson 's ratio, friction angle, cohesion, ratio groove width to HFCCT width, slope angle filling height as input parameters ML models, maximum vertical output parameter, correlation between analyzed. Newton-Raphson-based optimization (NRBO) used optimize...
In this Letter, an error sensitivity evaluation function of freeform optical systems is proposed, and a desensitization design method established. This adopts the idea micro-elements and, based on geometric optics theory, studies relationship between local curve surface change wavefront (ΔWE) when system disturbed by position error, realizes system. By simply changing function, can be applied to any with (spherical, aspheric, surface).
An off-axis three-mirror anastigmatic optical system with the offset apertures configuration as a typical unobscured is frequently used in various instruments. The practical applications show that this type of has higher sensitivity alignment. To reduce alignment systems, desensitization design method an adjustment-optimization-evaluation process proposed. By ray path difference analysis based on mathematical models, mirror magnitude value determined significant factor influencing...
Achieving aberration correction can improve the imaging quality of an optical system, and reducing error sensitivity system realizability system. In order to obtain off-axis three-mirror with high image low sensitivity, a design method is proposed which obtains initial structure anastigmatic (TMA) through nondominated sorting genetic algorithm II (NSGA-II). Combining comprehensive evaluation function this iteratively selects multiple freeform surface types determine combination lowest TMA...
Achieving higher resolution and larger zoom ratio is one of the primary goals optical systems. To this end, we propose a new configuration that combines modulatable magnification off-axis three-mirror system with to expand system. Since afocal reflective can easily achieve large apertures, approach more conducive meeting long focal length high-resolution performance requirements In study, through theoretical analysis equation, guided by need adapt pupil matching combined system, derived...
The predecessor of China Optics was and Applied Digest, which founded in 1985. At that time, it the only retrieval journal field optics China. end 2008, Digest renamed
In view of the urgent need for high-resolution and high-precision infrared image data geological environmental monitoring, we have developed a lightweight optical butting imaging system unmanned aerial vehicles (UAVs) to obtain data. this paper, proposed robust mosaicking method combination as-projective-as-possible warps similarity transformation, which uses multiple images generate wide viewing field panorama. It is based on an analysis projective transformation transformation. The...
Individual secondary optical components in a spectral splitting solar concentrator utilizing microlens array require multiple photovoltaic (PV) cells, which leads to the complexity of system alignment and high cost. In order improve integration PV cells thermal management, coupled double-light guide layers has been proposed. Using one-axis tracking, we further investigate performance combined with cylindrical double vertically staggered light detail. The results show that this maintains good...