Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Yongmo Zhuo"'
Publikováno v:
Optik. 124:5481-5485
The small pinhole of point diffraction interferometer based on pinhole-point diffraction places ultra-high requirement on both the adjustment of testing system and performance of CCD camera. Besides, poor fringe contrast due to the low reflectivity o
Publikováno v:
Optik. 124:1930-1935
We propose a computer-aided approach for residual aberration compensation of optical systems after initial assembly. The approach considers that intrinsic variables of an optical system such as index of refraction, radius of curvature and thickness a
Publikováno v:
Optics and Lasers in Engineering. 50:496-501
We propose a polynomial approximation method (PAM) for reconstruction of three-dimensional refractive index fields by interferometric tomography using limited data. Based on the assumption that the fields to be reconstructed are usually smooth and ca
Publikováno v:
Optics Communications. 284:3878-3885
Geometric aberrations in interferometric testing system can significantly influence the measurement results in the case of high-numerical-aperture test spherical surface, in which obvious high-order aberrations introduced by wavefront defocus could b
Publikováno v:
Optics Communications. 283:3115-3121
A technique based on fringe analysis is presented for the in-situ testing of the PZT scanner, including the end rotation analysis and displacement measurement. With the interferograms acquired in the Twyman–Green interferometer, the testing can be
Publikováno v:
Optics Communications. 278:240-246
According to ISO10110-7 and the engineering standards of Inertial Confinement Fusion (ICF), this paper presents a microscopic scattering imaging and analyzing system which allows one to automatically evaluate defects in random distributions and shape
Publikováno v:
Applied optics. 50(35)
We present a complete data-processing procedure for quantitative reconstruction of three-dimensional (3D) refractive index fields from limited multidirectional interferometric data. The proposed procedure includes two parts: (1) extraction of the pro
Publikováno v:
Applied optics. 50(20)
The nonnull interferometric method that employs a partial compensation system to compensate for the longitude aberration of the aspheric under test and a reverse optimization procedure to correct retrace errors is a useful technique for general asphe
Publikováno v:
Optics letters. 36(12)
We propose a simple and robust polynomial-based phase-fitting (PPF) technique for single interferogram demodulation. Based on the smoothness assumption, the method employs a set of Zernike polynomials (ZPs) to fit the phase and estimates the expansio
Publikováno v:
Applied optics. 50(16)
A point diffraction interferometer (PDI) with adjustable fringe contrast is presented for the high-precision testing of spherical surfaces. The polarizing components are employed in the PDI to transform the polarization states of the test and referen