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Applied Optics

Applied Optics


  • Vol. 10, Iss. 12 — Dec. 1, 1971
  • pp: 2722–2727

Time-Lapse Interferometry and Contouring Using Television Systems

A. Macovski, S. D. Ramsey, and L. F. Schaefer  »View Author Affiliations

Applied Optics, Vol. 10, Issue 12, pp. 2722-2727 (1971)

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A novel approach to time-lapse interferometry and contouring is introduced that uses television rather than photographic techniques. A first interferogram is stored on a video storage device such as a magnetic disk. After a change in the stress of the object, a second interferogram is electronically compared to the stored pattern to form a signal representative of the fringe pattern caused by the deformation. This signal may be directly displayed on a cathode-ray tube or employed by some automatic inspection device.

© 1971 Optical Society of America

Original Manuscript: June 30, 1971
Published: December 1, 1971

A. Macovski, S. D. Ramsey, and L. F. Schaefer, "Time-Lapse Interferometry and Contouring Using Television Systems," Appl. Opt. 10, 2722-2727 (1971)

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