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Design of visible, infrared dual-channel optical system for space target detection (EI CONFERENCE) 会议论文
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
Zhang X. Y.

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This paper designs a total of 250mm dual-channel optical system including visible (0.5m0.8m) infrared (3m5m). The main system is a three-reflection system and the primary mirror is designed as the first and the third reflecting surface with different figuring. The cooling infrared detector was choiced in infrared channel and achieves 100% cool shield efficiency of luminescence through the second imaging. The main benefits of this design are the large corrected and unvignetted FOV an easily baffling of stray light small encumbrance and an easy handing. 2011 IEEE.

滩涂开发对海岸带微气候的影响 会议论文
第九届全国水动力学学术会议暨第二十二届全国水动力学研讨会论文集, Proceedings of the 9th National Congress on Hydrodynamics and 22nd National Conference on Hydrodynamics, 第九届全国水动力学学术会议暨第二十二届全国水动力学研讨会, The 9th National Congress on Hydrodynamics and 22nd National Conference on Hydrodynamics, 中国四川成都, CNKI, 上海《水动力学研究与进展》杂志社、四川大学水力学与山区河流开发保护实验室
耿晓婧; 余锡平; GENG Xiao-jing; YU Xi-ping

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Research of active supporting technology based on 400mm thin mirror (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
Li H.-Z.; Liu X.-Y.; Wang J.-L.

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Using a spherical mirror of 400mm diameter and 12mm thickness active supporting technology of thin mirror is researched. The axial support of the mirror is composed of 12 active supports and 3 fixed supports. The force actuator which is composed of displacement actuator and force sensor is installed in the active support. The mirror surface is tested by Zygo interferometer. For calibration each actuator exerts unit force alone and the surface variation is tested and taken as the response function of the actuator. The response functions of all actuators compose the stiffness matrix. Then the stiffness matrix is used by damped least square method to determine the correction force of each active support. In order to analyze the correction capability of the active supports 14 Zernike modes of the mirror surface are generated and tested respectively and 7 modes are selected for correction. Initially the RMS error of mirror surface is 1.16 I( =0.6328nm)when all actuators exert the same force. After 5 iterations the RMS error of mirror surface is reduced to 0.13 close to the original surface quality. 2010 Copyright SPIE - The International Society for Optical Engineering.

Design of optical lens for space tridimensional mapping camera (EI CONFERENCE) 会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
Zhang L.-P.; Wang Z.

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Three-linear array tridimensional mapping camera consists of three independent linear CCD cameras. Unique position must be kept among the three linear CCD cameras. Optical lens is one of pivotal parts MTF the ground resolution power is 5m resolving power the distortion is 3/10000. They meet the need of user. 2009 SPIE. distortion are its important techno-items. The optical lens of space tridimensional mapping camera is the key to accomplish the tridimensional mapping mission. In order to meet the need of user a design on optical lens of transmission semi-telecentric beam path in image space is expounded and assembly method based on DFT(Design For Test) of single lens suit and whole optical lens are expounded. The test results indicates that the MTF of optical lens referred in the paper is 0.45(@77lp/mm)

MM5模拟数据应用到质量模型AERMOD中的应用评价 会议论文
济南, 2009年3月31日
作者: 杨庆周; 刘厚凤

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MM5 AERMOD 质量模型

Design of a three field-of-view IR system (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China
Chang J.; Weng Z.; Wang Y.; Jiang H.; Cong X.

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The design method and result are described for an infrared zoom system with three fields of view. Its zoom ratio is 9 and the corresponding field of view is 3-27. The working waveband is from 3 m to 5m and using the rotated elements in the system it is easy to change the field-of-view and satisfied the cooled detector requirements. and its total length is required to be no more than 400mm. The final optical system consists of 9 elements with two aspheric surfaces and a diffractive optical element. It achieves diffraction-limited imaging at the middle infrared waveband. From the last result we can know using the diffractive optical elements can eliminate the color aberration and helps to reduce the cost of the system

Design of dual-FOV refractive/diffractive LWIR optical system (EI CONFERENCE) 会议论文
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
Zhang J.-P.; Wang L.-J.; Zhang X.

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An infrared-optical zoom system using binary element is proposed in this paper. The two main advantages of the zoom system introducing here are: bigger F-number and lower cost. The primary optical properties are: F/#=1 Second Others zoom ratio =1:4 binary element is used to correct the chromatical aberration by taking the advantage of negative dispersion characteristics and the cost of the system is lower than that of conventional ones with Zinc Selenide (Znse) material at the same level. In the binary element is rotational symmetric with one step which is easy to fabricate in order to balance 5th spherical aberration and dual field are 26.6 and 5.6respectively. Wider field of view is used for search and the smaller one is used for imaging details. This system uses un-cooled infrared detector with 320240 pixels and 45m pixel size. The F-number matches the sensitivity range of the detector array. Three aspects are considered during design process to make the system more satisfactory and more achievable. First 5th coma aberration and 5th astigmatic aberration the manner of zoom is accomplished by exchanging tow lenses into the smaller field of view system layout. The lens exchange manner faces the requirement of simple system structure and good image quality in both focal points. It can also make the system more feasible in the alignment process than mechanical-zooming manner and optical-zooming manner high-order asphere surfaces with 2th order to 10 th order are also hired in the system. Asphere surface is useful in compressing the system and improving optical system transmittance. This kind asphere surface is on industrial level featuring low cost and easy to fabricate. It is shown that good image quality can achieved by implementing five Germanium lenses and the transmittance of system is 72%. All aberrations are diffraction-limited both spherical aberration and astigmatic aberration are corrected. When the field of view(FOV) is 26.6 and the focal length is 152mm MTF at Nyquist frequency(11lp/mm) is great than 0.7. The spherical aberration is -0.0073. The coma aberration is 0.0978 and the astigmatic aberration is -0.013. When the field of view(FOV) is 5.6 and the focal length is 38mm MTF at Nyquist frequency is great than 0.8 with spherical aberration -0.0046 the coma aberration 0.055 and astigmatic aberration 0.034.

High energy long duration frequency-doubled Nd:YAG laser and application to veins occlusion (EI CONFERENCE) 会议论文
High-Power Lasers and Applications III, November 8, 2004 - November 11, 2004, Beijing, China
Zhang L.; Yang G.; Li D.; Lu Q.; Gu H.; Zhu L.; Zhao Z.; Li X.; Tang Y.; Guo J.

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Laser treatment represents an attractive option to other methods of vessel diseases especially varicose veins. A long pulse (30-50ms) 532nm laser (Fig.1) is used in our experiments with the pulse duration matching the thermal relaxation time of the vessels and the green laser matching the absorption spectrum peak of the blood. Laser irradiates nude vein vessels directly or exterior skin to finish operation faster and to acquire the practical data for upper enteron varicose vein treatment in several animal experiments performed in vivo. The 5J-energy pulse allows us to finely occlude rabbit or dog's vein vessels up to 2 mm in diameter when irradiating them off external skin (Fig.2). Blood vessels are occluded at once and later biopsy specimens show the immediate and long-term lasting occlusion effect. While irradiating vessels directly (Fig.3) the vessels are usually irradiated to perforate detailed causes are still under investigation. Animal experiments show long pulse green laser therapy is a safe and effective solution to the vein's occlusion which promises such laser with high energy of each pulse and 30-50 ms duration is an ideal candidate for vessel diseases treatment.

Electrophoretic deposition and field emission properties of patterned carbon nanotubes (EI CONFERENCE) 会议论文
Zhao H.; H S.; Z L.; G Y.; Y J.

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Patterned carbon nanotubes on silicon substrates were obtained using electrophoretic method. The carbon nanotubes migrated towards the patterned silicon electrode in the electrophoresis suspension under the applied voltage. The carbon nanotubes arrays adhered well on the silicon substrates. The surface images of carbon nanotubes were observed by scanning electron microscopy. The field emission properties of the patterned carbon nanotubes were tested in a diode structure under a vacuum pressure below 5 10-4 Pa. The measured emission area was about 1.0 mm2. The emission current density up to 30 mA/cm2 at an electric field of 8 V/m has been obtained. The deposition of patterned carbon nanotubes by electrophoresis is an alternative method to prepare field emission arrays. 2005 Elsevier B.V. All rights reserved.

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