
Proceedings Paper
Optical unwrapping by triple illumination interferometerFormat | Member Price | Non-Member Price |
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Paper Abstract
Here, we present a triple illumination phase interferometer to have a more flexible unwrapping measurement range for
single shot optical unwrapping. Three beams of this interferometer illuminate a sample at different incident angles, three
phases of the different incident angles are simultaneously recorded using three spatial frequencies. The different
direction phases can be used for dual illumination optical unwrapping; as a result, the phase can be unwrapped by more
than one measurement range. The feasibility of this technique is demonstrated by measuring a stepped object with
heights of 150 and 660 μm. The smaller stepped phase is unwrapped by two measurement range; however, the phase of
larger step is wrapped for only one of the measurement range.
Paper Details
Date Published: 13 March 2015
PDF: 6 pages
Proc. SPIE 9369, Photonic Instrumentation Engineering II, 93690W (13 March 2015); doi: 10.1117/12.2079536
Published in SPIE Proceedings Vol. 9369:
Photonic Instrumentation Engineering II
Yakov G. Soskind; Craig Olson, Editor(s)
PDF: 6 pages
Proc. SPIE 9369, Photonic Instrumentation Engineering II, 93690W (13 March 2015); doi: 10.1117/12.2079536
Show Author Affiliations
Behnam Tayebi, Yonsei Univ. (Korea, Republic of)
Mohammad Reza Jafarfard, Yonsei Univ. (Korea, Republic of)
Farnaz Sharif, Yonsei Univ. (Korea, Republic of)
Mohammad Reza Jafarfard, Yonsei Univ. (Korea, Republic of)
Farnaz Sharif, Yonsei Univ. (Korea, Republic of)
Published in SPIE Proceedings Vol. 9369:
Photonic Instrumentation Engineering II
Yakov G. Soskind; Craig Olson, Editor(s)
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