Dynamic measurement of displacement with phase-shifting technique

Yueguang Lu, A. Peter Doel, David D. Walker, Xia Zhao

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A simple spatial phase-shifting setup that uses a tiled mirror and a cat's-eye retroreflector is presented. It can be used in displacement measurement when high speed and accuracy are required. An experiment is carried out to demonstrate the feasibility of the method. A root mean square (rms) accuracy of better than 5 deg is obtained in ordinary circumstance. The system errors are also studied briefly.

Original languageEnglish
Pages (from-to)2006-2009
Number of pages4
JournalOptical Engineering
Issue number7
Publication statusPublished - 1 Jul 2003
Externally publishedYes


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