机构

• 长春光学精密机械与物... [6]

采集方式

• OAI收割 [6]

内容类型

• 会议论文 [6]

发表日期

• 2009 [6]

学科主题

筛选

浏览/检索结果: 共6条，第1-6条 帮助 限定条件 发表日期：2009    内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择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发表日期升序发表日期降序 Athermal design of hybrid refractive/harmonic diffractive optical system for far-infrared multi-band (EI CONFERENCE) 会议论文  OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China 作者:  Liu Y.;  Liu Y.;  Zhang H.;  Zhang H.;  Sun Q. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 In order to get enough information about the target  avoid big chromatic aberration as a result of wide spectrum and the complexity of optical system and adapt different special environment temperature  a hybrid refractive/harmonic diffractive optical system in far-infrared multi-band is described in the paper. This diffractive optical system has been designed an athermalized multi-band imaging system with harmonic diffractive element in 15-50m spectrum  based on larger 1dispersion capability and particular thermal dispersive power of harmonic diffractive element. Then  at the temperature range from 0C to 40C  this design can simultaneously meet with all requirements of the imaging system in five harmonic wave bands  including15.8-16.2m  18.5-20m  23-25m  30.5-33.5m and 46-50m. In each harmonic wave band  the magnification changes as a function of wavelength  which creates image registration error. To compensate this shortcoming  a zoom optical system is designed with three lenses by means of optical two- component method. The design results show that the hybrid refractive/harmonic diffractive optical system can realize athermalized and achromatic design  and the zoom optical system makes half image height at 3.53mm in every harmonic wave band and still realizes aberration compensation action. In the five harmonic wave bands  each optical transfer function approaches the diffraction limit at ambient temperature range of 0C to 40C. Finally  the system realizes the requirements of portability  mini-type and ease for fabrication. 2009 SPIE.   A novel design of liquid bio-chip based on biomolecules optical switch of upconversion fluorescence nanocrystal and quantum dots (EI CONFERENCE) 会议论文  OAI收割 2009 Asia Communications and Photonics Conference and Exhibition, ACP 2009, November 2, 2009 - November 6, 2009, Shanghai, China 作者:  Sun Y.;  Zhang H.;  Zhang H.;  Zhang Y.;  Yu Y. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 A novel prototype liquid bio-chip based on molecules optical switch of upconversion fluorescence nanocrystal(UCP) as a donor attached with anti-BSA antibody and quantum dots(QDs) as an acceptor conjugated with antigen (BSA) was designed and constructed for a innovative element of liquid biochip used in BSA detection. 2009 Optical Society of America.   Application of multi-sensors parallel fusion system in photoelectric tracing 会议论文  OAI收割 2009 Cheng G. Y.; Cai S.; Gao H. B.; Zhang S. M.; Qiao Y. F. 收藏  |  浏览/下载：7/0  |  提交时间：2013/03/28 Imaging analysis of a novel compound diffractive telescope system (EI CONFERENCE) 会议论文  OAI收割 Optical Manufacturing and Testing VIII, August 4, 2009 - August 5, 2009, San Diego, CA, United states 作者:  Liu H.;  Liu Y. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 The main feature of the compound diffractive telescope is the combination of diffractive optics with compound structure arranged eyepieces. In this paper  a design of the compound diffractive telescope is firstly introduced  and a 4.2 FOV is obtained with one primary lens and twenty-one eyepieces. Secondly  image characteristic of different channels is analyzed with the design wavelength in ASAP  and one modified phase function model of diffractive optical element is introduced to analyze the MTF curves for 0 FOV  which provides a more accurate prediction of the performance of the system. Then the system is tested by the star image test  and the diffraction limit images are got within 2 FOV. And finally  two pictures taken from the adjacent FOV proved to be able to be spliced together. All the results above demonstrate that a good performance of the compound diffractive telescope. 2009 SPIE.   The Analysis and Design of Low Velocity Estimation Based on Observer 会议论文  OAI收割 2009 Song Y.; Gao H. B.; Zhang S. M.; Tian Y. T.; Wang D. J.; Ieee 收藏  |  浏览/下载：10/0  |  提交时间：2013/03/28 The analysis and design of low velocity estimation based on observer (EI CONFERENCE) 会议论文  OAI收割 2009 IEEE International Conference on Automation and Logistics, ICAL 2009, August 5, 2009 - August 7, 2009, Shenyang, China 作者:  Wang D.;  Zhang S. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 Low velocity servo system needs precision velocity estimation. An observer for low velocity estimation was proposed in this paper. First  the source of low velocity estimation errors and the shortcomings of the single period difference were analyzed. The relationship between the estimation accuracy and estimator's frequency characteristics was concluded. Then  the structure of the observer was proposed. Frequency characteristics were used to design the compensator which can stabilize the observer. The stability of the observer was also discussed. At last  the observer's estimation accuracy was evaluated through a quantitative comparison. The results of simulation and experiment have shown that the quantized error in velocity estimation decreases dramatically when a velocity observer is used. Compared with some commonly-used estimators  the phase lag accompanying the observer is much less. 2009 IEEE.