Vibration-resistant interferometric measurement of optical surface figure and roughness

2020 ◽  
Author(s):  
Qian Liu ◽  
Wen Huang ◽  
Lulu Li ◽  
Zhiliang Zhao
Keyword(s):  
Optical Surface ◽  
Interferometric Measurement ◽  
Surface Figure

Three-step shift-rotation absolute measurement of optical surface figure with irregular shaped aperture

2018 ◽  
Vol 426 ◽  
pp. 589-597 ◽  
Author(s):  
Jinyu Du ◽  
Zhongming Yang ◽  
Zhaojun Liu ◽  
Guobin Fan
Keyword(s):  
Absolute Measurement ◽  
Optical Surface ◽  
Shift Rotation ◽  
Surface Figure

scholarly journals Influence of mounting on the optical surface figure in optical reference surfaces

2020 ◽  
Vol 15 (01) ◽  
pp. P01005-P01005
Author(s):  
V. Lédl ◽  
I. Fortmeier ◽  
P. Psota ◽  
M. Schulz ◽  
O. Matoušek ◽  
...  
Keyword(s):  
Optical Surface ◽  
Optical Reference ◽  
Surface Figure

Optical surface figure of lens under kinematic mount apparatus and its reproducibility

2013 ◽  
Vol 21 (8) ◽  
pp. 2000-2007 ◽  
Author(s):  
于新峰 YU Xin-feng ◽  
巩岩 GONG Yan ◽  
倪明阳 NI Ming-yang ◽  
秦硕 QIN Shuo
Keyword(s):  
Optical Surface ◽  
Surface Figure

Discussion on Laser Cleaning of Optical Surface Machined by Magnetorheological Finishing

2010 ◽  
Vol 135 ◽  
pp. 409-412 ◽  
Author(s):  
Gui Wen Kang
Keyword(s):  
Laser Cleaning ◽  
Numerical Control ◽  
Flowing Water ◽  
Optical Surface ◽  
Working Ability ◽  
Magnetorheological Finishing ◽  
High Quality ◽  
Finishing Process ◽  
Optical Manufacturing ◽  
Surface Figure

Magnetorheological finishing (MRF) is a novel precision optical machining technology. Owing to its flexible finishing process, MRF can eliminate subsurface damage, smooth rms micro roughness and correct surface figure errors. Through proper designing of numerical control, sphere and asphere optics can be machined by magnetorheological finishing with high quality. Owing to it’s excellence in optical manufacturing, MRF has gained more and more application in industry. Under most conditions the optical surface after MRF would have certain contaminant particles and this would affect its working ability in future use. Formerly the polished workpiece is cleaned by flowing water or ultrasonic cleaning and the contaminat particles couldn’t be totally removed. Laser cleaning is brought forward in this paper and good results could be anticipated.

Variation of the amount of hydrogen along the galactic ridge

1967 ◽  
Vol 31 ◽  
pp. 171-172
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Surface Brightness ◽  
Milky Way ◽  
Neutral Hydrogen ◽  
Line Of Sight ◽  
Optical Surface ◽  
Hydrogen Density ◽  
Continuous Radiation ◽  
Galactic Longitude

The integralNHof neutral-hydrogen density along the line of sight is determined from the Kootwijk and Sydney surveys. The run ofNHwith galactic longitude agrees well with that of thermal continuous radiation and that of the optical surface brightness of the Milky Way.

Sign in / Sign up

Export Citation Format

Share Document