中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共4条,第1-4条 帮助

条数/页: 排序方式:
Experimental demonstration of quasi-omni-directional transmitter for underwater wireless optical communication based on blue LED array and freeform lens 期刊论文  OAI收割
Optics Communications, 2019, 卷号: 434, 页码: 184-190
作者:  
Han, Biao;  Zhao, Wei;  Zheng, Yunqiang;  Meng, Jiacheng;  Wang, Tao
  |  收藏  |  浏览/下载:195/0  |  提交时间:2018/12/03
Desensitization design method of unobscured three-mirror anastigmatic optical systems with an adjustment-optimization-evaluation process 期刊论文  OAI收割
Applied Optics, 2018, 卷号: 57, 期号: 6, 页码: 1472-1481
作者:  
Meng, Q. Y.;  Wang, H. Y.;  Wang, W.;  Yan, Z. Q.
  |  收藏  |  浏览/下载:24/0  |  提交时间:2019/09/17
A novel LED lens for rotationally symmetric uniform illumination 会议论文  OAI收割
2011 international conference on electronics and optoelectronics, iceoe 2011, dalian, china, july 29, 2011 - july 31, 2011
作者:  
YanXingtao;  YangJianfeng
收藏  |  浏览/下载:10/0  |  提交时间:2012/07/09
Design and fabrication of CGH for aspheric surface testing and its experimental comparison with null lens (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Zhao J.;  Zhang X.;  Zhang X.;  Zhang X.;  Li F.
收藏  |  浏览/下载:34/0  |  提交时间:2013/03/25
Computer-generated hologram (CGH) is an effective way to compensate wavefront in null test of aspheric surfaces and freeform surfaces. Our strategies of CGH design and fabrication for optical testing are presented  and an experiment demonstrating the compensation results of CGH and null lens is also reported. In order to design complex CGH  software was developed  with which we can design a CGH including three sections: main section for compensating wavefront in null test  alignment section for adjusting the relative position between CGH and interferometer  and fiducial section for projecting fiducial marks around the optics under test. The design result is represented in GDS II format file which could drive a laser-direct-writer- machine to fabricate a photomask. Then  a 1:1 replication process is applied to duplicate the patterns from photomask to a parallel optical substrate whose surface is error better than /60 rms. Finally  an off-axis aspheric surface was tested with CGH and null lens respectively. The test result with CGH (0.019rms) is almost the same as the result with null lens (0.020 rms). This experiment also demonstrated that fiducial marks projected by CGH can be used to guide the alignment of the optics and measurement of its off-axis distance. 2010 Copyright SPIE - The International Society for Optical Engineering.