QQ客服 官方微博 反馈留言

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Preparation and Characterization of ZnSe Film Synthesized by Chemical Co-reduction 会议论文 作者:  Kegao LIU;  Nianjing JI;  Yong XU;  Guangcai SHI 收藏  |  浏览/下载：5/0  |  提交时间：2019/12/31 Zinc Selenide  phase  morphology  chemical co-reduction   Preparation and Characterization of ZnSe Film Synthesized by Chemical Co-reduction 会议论文 3rd International Conference on Machinery, Materials and Information Technology Applications (ICMMITA), NOV 28-29, 2015 作者:  Liu, Kegao;  Ji, Nianjing;  Xu, Yong;  Shi, Guangcai 收藏  |  浏览/下载：1/0  |  提交时间：2019/12/31 Zinc Selenide  phase  morphology  chemical co-reduction   Spectroscopic ellipsometry studies on vacuum-evaporated zinc selenide thin film 会议论文 Proceedings of SPIE, 2009 作者:  WEidong Gao 收藏  |  浏览/下载：9/0  |  提交时间：2016/11/25 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. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 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.   Solid State Recrystallization of Ii-Vi Semiconductors : Application to Cadmium Telluride, Cadmium Selenide and Zinc Selenide 会议论文 37th INSTN Colloquium on Metallurgy: Microstructures and Recrystallization - 收藏  |  浏览/下载：9/0  |  提交时间：2016/11/05