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浏览/检索结果: 共2条，第1-2条 帮助 限定条件 发表日期：2009    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 Parameter design and optimization for mobile mechanism of a transformable wheel-track robot 会议论文 2009 IEEE International Conference on Automation and Logistics, ICAL 2009, Shenyang, China, August 5-7, 2009 作者:  Li ZQ(李智卿);  Ma SG(马书根);  Li B(李斌);  Wang MH(王明辉);  Wang YC(王越超) 收藏  |  浏览/下载：9/0  |  提交时间：2012/06/06 A spherical catadioptric telescope system based on Cooke corrector group (EI CONFERENCE) 会议论文 Novel Optical Systems Design and Optimization XII, August 3, 2009 - August 4, 2009, San Diego, CA, United states Zhang J.; Kang Y.; Liu W. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 To obtain a number of advantages in fabrication  testing and alignment  many designs in which spherical mirrors replace classical Cassegrain-form aspheric mirrors are present in the literature. However  spherical mirrors suffer from substantial spherical aberration and thereby require some form of corrector group. But in this case  the question encountered is that of making the basic optical configuration more complex. In this paper  a new design based on Cooke corrector group is presented for eliminating spherical aberration  which is believed to provide higher performance with less complexity than previous approaches. Besides  the cost and fabrication period will be extremely decreased. The telescope system using corrector group here can achieve good optical performance with f# of 10  full field of 0.5  obscuration of 1/3 and MTF (Modulation Transfer Function) of 0.48 corresponding to 50@lp/mm. 2009 Copyright SPIE - The International Society for Optical Engineering.