29 July 2002 Panoramic interferometer with cylindrical hologram
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Proceedings Volume 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life; (2002) https://doi.org/10.1117/12.484543
Event: Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, 2002, Novosibirsk, Russian Federation
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.
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Eugene A. Krasnopevtsev, Eugene A. Krasnopevtsev, } "Panoramic interferometer with cylindrical hologram", Proc. SPIE 4900, Seventh International Symposium on Laser Metrology Applied to Science, Industry, and Everyday Life, (29 July 2002); doi: 10.1117/12.484543; https://doi.org/10.1117/12.484543
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