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浏览/检索结果: 共7条，第1-7条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序提交时间升序提交时间降序题名升序题名降序作者升序作者降序 Performance of a wide field-of-view atmospheric cherenkov telescope prototype based on a refractive lens 期刊论文 Nuclear instruments & methods in physics research section a-accelerators spectrometers detectors and associated equipment, 2019, 卷号: 927, 页码: 46-53 作者:  Chen, Tianlu;  Liu, Cheng;  Gao, Qi;  Cai, Hui;  Wang, Zhen 收藏  |  浏览/下载：125/0  |  提交时间：2019/04/22 Atmospheric cherenkov telescope  Refractive lens  Wide field-of-view (fov)  Gamma-ray bursts (grbs)  Cosmic rays (crs)   Performance of a wide field-of-view atmospheric cherenkov telescope prototype based on a refractive lens 期刊论文 Nuclear instruments & methods in physics research section a-accelerators spectrometers detectors and associated equipment, 2019, 卷号: 927, 页码: 46-53 作者:  Chen, Tianlu;  Liu, Cheng;  Gao, Qi;  Cai, Hui;  Wang, Zhen 收藏  |  浏览/下载：125/0  |  提交时间：2019/04/22 Atmospheric cherenkov telescope  Refractive lens  Wide field-of-view (fov)  Gamma-ray bursts (grbs)  Cosmic rays (crs)   Performance of a wide field-of-view atmospheric Cherenkov telescope prototype based on a refractive lens 期刊论文 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2019, 卷号: 927 作者:  Chen, Tianlu;  Liu, Cheng;  Gao, Qi;  Cai, Hui;  Wang, Zhen 收藏  |  浏览/下载：23/0  |  提交时间：2019/12/06 Atmospheric Cherenkov telescope  Refractive lens  Wide field-of-view (FoV)  gamma-ray bursts (GRBs)  Cosmic rays (CRs)   Design and fabrication of imaging optical systems with freeform surfaces (EI CONFERENCE) 会议论文 Current Developments in Lens Design and Optical Engineering XIII, August 13, 2012 - August 15, 2012, San Diego, CA, United states Zhang X.; Zheng L.; He X.; Wang L.; Zhang F.; Yu S.; Shi G.; Zhang B.; Liu Q.; Wang T. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 Freeform surfaces provide more degrees of freedom for design of optical systems  and enhance the ability of compensation and correction aberrations. Freeform surfaces are of advantage to balance the unsymmetrical aberrations  especially for the wide-field off-axis optical systems. This paper focus on an off-axis reflective optical system  which focal length is 550mm  F# is 6.5 and field of view (FOV) is 76. The system adopts some freeform surfaces. We discuss the problems we noticed in processes of design  manufacture  measurement and alignment  and the solutions. At last  the periodical research result and the expected performance are given. 2012 SPIE.   Reflective foveated optical imaging system based on liquid crystal spatial light modulator (EI CONFERENCE) 会议论文 Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China Peng Q.-Q.; Chang J.; Feng S.-L.; Wang R.-R. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 Based on reflective liquid crystal spatial light modulator (SLM)  a new foveated optical imaging system is proposed. High quality imaging can be realized at any region of interest (ROI) within the field-of-view (FOV) by utilizing the SLM to correct the aberration of different regions dynamically. A reflective cassegrain optical structure is proposed  which is designed  optimized and matched with the reflective SLM to construct a more practical foveated imaging system. This reflective imaging system has a large aperture so that enough light can reach the image plane. It also makes the total length of the system shorter and therefore more practical. We also simulate and analyze the system. This kind of foveated optical imaging system can be applied in wide FOV imaging aspects to reduce bandwidth and optics complexity  and to achieve weight reduction and miniaturization. 2010 Copyright SPIE - The International Society for Optical Engineering.   Spaceborne laser interconnect technology based on human bionics (EI CONFERENCE) 会议论文 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009, August 9, 2009 - August 12, 2009, Changchun, China He X.; Jin G.; Wang J. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 As a result of comparative study on human visual and Free Space Optical (FSO) communication  a new concept of satellites laser interconnect was proposed based on human bionics. For the laser link is difficult to set up directly  a new concept was given out based on the three processes of human visual capturing the objectives: voice assisting to guide  eyes' wide Field Of View (FOV) cursory capturing and eyes' foveal FOV high-resolution imaging. Three similar processes were introduced to spaceborne laser interconnect which were radio assisting to guide  beacons laser wide FOV capturing and communication laser narrow FOV capturing  so that the difficulty of setting up the optical communication link was reduced evidently. Meanwhile  the antenna optical system based on the bionics was given out. Each laser terminal configured two independent optical antenna  through the spaceborne storage and time-domain link switching  complex topology network could be set up. The simulation system was built using Virtual Reality Toolbox  the result showed that the laser terminal could search and set up communication links  which took about only lOOms from capturing the beacon to setting up communication. 2009 IEEE.   Optical system design with high resolution and large field of view for the remote sensor (EI CONFERENCE) 会议论文 Chang J.; Weng Z.-C.; Wang Y.-T.; Cheng D.-W.; Jiang H.-L. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 In this paper  we are presenting a design method and its results for a space optical system with high resolution and wide field of view. This optical system can be used both in infrared and visible configurations. The designing of this system is based on an on-axis three-mirror anastigmatic (TMA) system. Here the on-axis concept allows wide field of view (FOV) enabling a diversity of designs available for the Multi-Object Spectrometer instruments optimized for low scattered and low emissive light. The available FOVs are upto 1 in both spectrum ranges  whereas the available aperture range is F/15 - F/10. The final optical system is a three-mirror telescope with two on-axis and one off-axis segment and its resolution is 0.3m or even lower. The distinguished feature of this design is that it maintains diffraction-limited image at wide wavelengths. The technological developments in the field of computer generated shaping of large-sized optical surface details with diffraction-limited imagery have opened new avenues towards the designing techniques. Such techniques permit us to expand these technological opportunities to fabricate the aspherical off-axis mirrors for a complex configuration.