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http://dx.doi.org/10.3807/KJOP.2016.27.2.067

Fringe Sensitivity of Projection Moire Topography Due to Position of Light Source and Object Distance According to Grating Periods  

Oh, Hyun Seock (Department of Photonics and Electronics Physics, Hannam University)
Ju, Yun Jae (Department of Photonics and Sensor, Hannam University)
Jo, Jae Heung (Department of Photonics and Electronics Physics, Hannam University)
Publication Information
Korean Journal of Optics and Photonics / v.27, no.2, 2016 , pp. 67-72 More about this Journal
Abstract
In projection moire topography, the investigation of fringe sensitivity, which means the change rate of fringe order according to object height, is important and necessary to reduce the measurement error of the shape of an object. Using the fringe sensitivity, the determination of the absolute orders of moire fringes can be performed very easily and rapidly. The important parameters in the determination of absolute orders of fringes are the positions of light source and object, and the grating period in projection moire topography. Among these parameters, the fringe sensitivity due to the transverse motion of the light source and the longitudinal motion of the object according to grating periods are analyzed and compared. As a result, whereas the fringe sensitivity in the transverse-motion method increases linearly and gradually as the distance between light source and imaging sensor increases, the fringe sensitivity due to the longitudinal-motion method decreases dramatically as the distance between imaging lens and object increases. In these methods, the fringe sensitivity and its change increase as the grating period increases.
Keywords
Projection Moire Topography; Moire fringe; fringe sensitivity;
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1 G. Indebetouw and R. Czarnek, eds., selected Papers on Optical Moire and Applications, Vol. MS64 of SPIE Mil-stone Series (SPIE, Bellingham, Wash) (1992).
2 J. S. Lim, "Order determination and visibility enhancement of moire topographic fringes," Korea Advanced Institute of Science and Technology, Daejon (1989) p. 2-3.
3 P. S. Theocaris, "Nonclassical Shell Problems," (proc. Internatl. Assoc. for Shell Structures), Warsaw 877-889, (1963).
4 D. M. Meadows, W.D. Johnson, and J.B. Allen, "Generation of Surface Contours by Moire Patterns," Appl. Opt. 9, 942-947 (1970).   DOI
5 H. Takasaki, "Moire Topography," Appl. Opt. 9, 1467-1472 (1970).   DOI
6 J. D. Horanesian and Y. Y. Hung, "Moire Contour-Sum Contour-Difference, and Vibration Analysis of Arbitrary Objects," Appl. Opt. 10, 2734-2738 (1971).   DOI
7 M. Idesawa, T. Yatagai, and T. Soma, "Scanning moire method and automatic measurement of 3-D shapes," Appl. Opt, 16, 2152-2162 (1977).   DOI
8 K. C. Yuk, J. H. Jo, and S. C., "Determination of the absolute order of shadow moire fringes by using two differently colored light sources," Appl. Opt. 33, 130-132, (1994).   DOI
9 J. H. Jo, K. C. Yuk, and S. Chang, Jpn. J, "Colored Shadow Moire Topography Using Colored Light Sources: Red, Green, and Blue," Appl. Phys. 33, L1565 (1994).
10 M. S. Jung, "3-D Profile Measurement of Human Bodies Using Moire Topography," Korea Advanced Institute of Science and Technology, Daejon (2002) p. 12.
11 Y.-j. Bae, "3-D Reconstruction Using the Derivative Moire Topography," Korea aerospace univ., Gyeong-gi (2015) p. 18-20.
12 K. C. Yuk, "Fringe sensitivity of the Shadow Moire Topography by Using a Moving Light source or a Moving Grating," Hannam Univ., Daejon (1997) p. 1
13 S.-m. Jo and K. C. Yuk, "Determination of the absolute order of moire fringes of moire shadow topography with a crossed crossed grating," Kong Ju National Univ., Choongnam (1997) p. 1.
14 K. C. Yuk, "Determination of the absolute order of shadow moire fringes with multi colored light sources," Appl. Opt. 33, 130-132 (1994).   DOI
15 S.-W. Kim, Y.-B. Choi, j.-T. Oh, and M.-S. Jung, "Phaseshifting Grating Projection Moire Topography," Transactions of the Korean Society of Mechanical Engineers 22, 850-857, (1998).