Simplified Phase Shifting Moiré Interferometer Using a Computer Generated Grid Pattern

Kyu Min Chae, Hyun Ho Lee, Sang Youp Yim, Seung Han Park

Research output: Contribution to journalArticle

4 Citations (Scopus)


A simplified phase-shifting moiré interferometer for generating moiré fringes from projected linear gratings and computer generated grid patterns without using a low-pass filter is presented. In particular, it is demonstrated that moiré fringes can be successfully obtained even when there is no clear frequency separation between the moiré fringe and the grid pattern. It is also pointed out that our proposed method produces fewer phase jumps than conventional phase-measuring profilometry, enabling us to realize more robust phase unwrapping.

Original languageEnglish
Pages (from-to)378-384
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number1
Publication statusPublished - 2004 Jan 1


All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this