Experimental study on absolute test of spherical surfaces with shift-rotation method

2012 ◽  
Author(s):  
Weihong Song ◽  
Fan Wu ◽  
Xi Hou
Keyword(s):  
Experimental Study ◽  
Spherical Surfaces ◽  
Rotation Method ◽  
Absolute Test ◽  
Shift Rotation

Absolute surface figure testing by shift-rotation method using Zernike polynomials

2012 ◽  
Vol 37 (15) ◽  
pp. 3198 ◽  
Author(s):  
Dongqi Su ◽  
Erlong Miao ◽  
Yongxin Sui ◽  
Huaijiang Yang
Keyword(s):  
Zernike Polynomials ◽  
Rotation Method ◽  
Shift Rotation ◽  
Surface Figure

Absolute calibration for Fizeau interferometer with the global optimized shift-rotation method

2014 ◽  
Vol 54 ◽  
pp. 49-54 ◽  
Author(s):  
Weihong Song ◽  
Shifang Li ◽  
Xi Hou ◽  
Fan Wu ◽  
Wenchuan Zhao ◽  
...  
Keyword(s):  
Absolute Calibration ◽  
Fizeau Interferometer ◽  
Rotation Method ◽  
Shift Rotation

Extended shift-rotation method for absolute interferometric testing of a spherical surface with pixel-level spatial resolution

2017 ◽  
Vol 56 (16) ◽  
pp. 4886 ◽  
Author(s):  
Yu Liu ◽  
Liang Miao ◽  
Wenlong Zhang ◽  
Chunshui Jin ◽  
Haitao Zhang
Keyword(s):  
Spatial Resolution ◽  
Spherical Surface ◽  
Rotation Method ◽  
Shift Rotation

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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