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Proceedings Paper

Panoramic interferometer with cylindrical hologram
Author(s): Eugene A. Krasnopevtsev
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Paper Abstract

To investigate a deformed state of a cylindrical object, a panoramic interferometer with cylindrical hologram is proposed. A conic mirror with an apex angle 90° is placed coaxially with an object. A cylindrical photoemulsion film is placed near the object under study. The axial collimated beam is reflected from the conical mirror and illuminates all object points at the same angle. The object surface diffuses the incident radiation to the photoemulsion. After two exposures the hologram is unrolled in plane and a set of panoramic interferograms in collimated beams is formed. Peculiarities of the image and interference pattern restored by the unrolled hologram are examined. Measurement methods of all displacement vector components of the external and internal surface points of the optically transparent shell are expounded. A tomographical measurement method of relative radial deformation of the shell elements is developed. The unrolled hologram allows to determine the deformed state ofthe object in separate points and on the whole to detect anomalous deformation zones.

Paper Details

Date Published: 29 July 2002
PDF: 5 pages
Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484543
Show Author Affiliations
Eugene A. Krasnopevtsev, Novosibirsk State Pedagogical Univ. (Russia)

Published in SPIE Proceedings Vol. 4900:
Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life
Yuri V. Chugui; Sergei N. Bagayev; Albert Weckenmann; P. Herbert Osanna, Editor(s)

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