TWO REFERENCE BEAM HOLOGRAPHIC INTERFEROMETRY FOR AERODYNAMIC FLOW STUDIES

1977 ◽  
pp. 183-192 ◽  
Author(s):  
Jean Surget
Keyword(s):  
Holographic Interferometry ◽  
Reference Beam

Two-reference-beam holographic interferometry

1976 ◽  
Vol 66 (1) ◽  
pp. 23 ◽  
Author(s):  
R. Dändliker ◽  
E. Marom ◽  
F. M. Mottier
Keyword(s):  
Holographic Interferometry ◽  
Reference Beam

Difference holographic interferometry (DHI): Single reference beam technique

1988 ◽  
Vol 68 (6) ◽  
pp. 404-407 ◽  
Author(s):  
Z. Füzessy ◽  
F. Gyimesi ◽  
I. Bányász
Keyword(s):  
Holographic Interferometry ◽  
Reference Beam ◽  
Beam Technique

Multi-Angle Digital Holographic Profilometry for Precision Measurements

2013 ◽  
Vol 718-720 ◽  
pp. 415-419
Author(s):  
Xing Luo ◽  
Shu Hai Jia ◽  
Yong Xu ◽  
Ye Zhang ◽  
Wei Hong Qu
Keyword(s):  
Holographic Interferometry ◽  
Reference Beam ◽  
Phase Unwrapping ◽  
Precision Measurements ◽  
Object Surface ◽  
Theory Analysis ◽  
Object Beam ◽  
3D Shape ◽  
Mechanical Machining

A novel digital holographic interferometry used for measuring the 3D shape is proposed. The theory analysis and simulation of multi-angle interferometry are described. General holographic interferometry are not able to measure the discontinuous object because of the phase unwrapping. However, in this method, holographic interferograms are generated by object beam and reference beam with different incident angles. Height information of every point at the object surface is extracted independently without the phase unwrapping. The results of simulation demonstrate that this method can be used for measuring the complicated and discontinuous object. It will be useful for the measuring the large and complex discontinuous surfaces often exist in mechanical machining.

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