Please use this identifier to cite or link to this item: https://doi.org/10.1016/0030-4018(96)00167-8
Title: Circular grating moiré deflectometry analysis by zeroth and first radial fringe order angle measurement
Authors: Ng, T.W. 
Issue Date: 1-Sep-1996
Source: Ng, T.W. (1996-09-01). Circular grating moiré deflectometry analysis by zeroth and first radial fringe order angle measurement. Optics Communications 129 (5-6) : 344-346. ScholarBank@NUS Repository. https://doi.org/10.1016/0030-4018(96)00167-8
Abstract: The previous method of counting integer fringe orders in circular grating moiré deflectometry yields inaccurate measurements. One way to improve the measurement accuracy with this method is by lowering the grating pitch. The attendant higher cost and possible encroachment of the diffraction limit, however, restricts the practicality of this approach. An alternative analysis method, which measures the angle between the zeroth and first radial fringe order, is presented in this paper to overcome this problem.
Source Title: Optics Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/57999
ISSN: 00304018
DOI: 10.1016/0030-4018(96)00167-8
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