机构

• 长春光学精密机械与物... [2]
• 南京天文光学技术研究... [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [3]

发表日期

• 2012 [2]
• 2010 [1]

学科主题

• 天文技术与方法::主... [1]

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Performance Comparison between Two Active Support Schemes for 1-m Primary Mirror 会议论文  OAI收割 Amsterdam, Netherlands, 2012-7-1 作者:  Guomin Wang;  Bozhong Gu;  Dongsheng Niu 收藏  |  浏览/下载：39/0  |  提交时间：2014/01/11 support scheme  active optics  correction ability  axial support   Design and fabrication of imaging optical systems with freeform surfaces (EI CONFERENCE) 会议论文  OAI收割 Current Developments in Lens Design and Optical Engineering XIII, August 13, 2012 - August 15, 2012, San Diego, CA, United states 作者:  Zhang F.;  Wang L.;  Wang L.;  Wang L.;  He X. 收藏  |  浏览/下载：34/0  |  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.   Correction of the non-uniformity for multi-TDICCD mosaic camera on FPGA (EI CONFERENCE) 会议论文  OAI收割 2010 International Conference on E-Product E-Service and E-Entertainment, ICEEE2010, November 7, 2010 - November 9, 2010, Henan, China Zhu H.; Xue X.; Ma T.; Li H.; Si G.; Guo Y. 收藏  |  浏览/下载：44/0  |  提交时间：2013/03/25 To solve the non-uniformity problem of multi Time Delay Integral Charge Couple Device (TDICCD) mosaic camera  several common non-uniformity correction methods are discussed. Secondly  a non-uniformity correction algorithm is proposed and implemented on Field-Programmable Gate Array (FPGA) platform. Firstly  the correction algorithm is designed. Finally  the generation and definition of non-uniformity are introduced  considering the fix-point processing ability of FPGA  the correction algorithm is optimized properly  and implemented on FPGA. The experimental results indicate that the non-uniformity can be decreased from 8.3%to 2.0% in 1s for 3-TDICCD mosaic camera's images with the proposed correction algorithm at 96TDI stage  proving that this correction algorithm is of high real-time performance  good practicality and satisfies the requirements of the target system. 2010 IEEE.