机构

• 长春光学精密机械与物... [1]
• 沈阳自动化研究所 [1]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [2]

发表日期

• 2005 [1]
• 2000 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Analysis and design of a precise omnidirectional stereo vision optical device utilizing a single camera 会议论文  OAI收割 ICO20: Optical Devices and Instruments, Changchun, China, August 21-26, 2005 作者:  Su LC(苏连成);  Zhu F(朱枫) 收藏  |  浏览/下载：13/0  |  提交时间：2012/06/06 Hyperbolic mirror  omnidirectional stereo vision  catadioptric sensor   Recent progress on asphere manufacturing and testing at CIOM (EI CONFERENCE) 会议论文  OAI收割 Advanced Optical Manufacturing and Testing Technology 2000, November 1, 2000 - November 3, 2000, Chengdu, China 作者:  Zhang X.;  Yu J.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 The manufacturing procedure of a 500 mm in diameter  f/2 hyperbolic primary mirror based on Computer-Controlled Polishing is introduced in detail. The mirror was finally polished to the shape accuracy of 13 nm rms and the surface roughness of 2 nm Ra. Testing methods and data analysis for different stages ranging from grinding to polishing are discussed. Some critical factors affecting the efficiency and accuracy of the grinding/polishing procedure are summarized. In addition  the preliminary work to make large off-axis asphere mirrors is presented. The difficulties in polishing and testing for both circular aperture and rectangular aperture mirrors are previewed  and a possible solution is given. To control the geometrical parameters such as radius of curvature and conic constant  a new profiler has been built  and it has proven very useful to improve the grinding efficiency. Finally  the manufacturing of small aspheres using deterministic grinding tool is also introduced. The fine grinding procedure of LOH's asphere grinding machine is presented.