Multiple rotation assessment through isothetic fringes in speckle photography

Journal Article · Thu May 10 00:00:00 EDT 2007 · Applied Optics

DOI:https://doi.org/10.1364/AO.46.002676· OSTI ID:20929693

Angel, Luciano; Tebaldi, Myrian; Bolognini, Nestor

The use of different pupils for storing each speckled image in speckle photography is employed to determine multiple in-plane rotations. The method consists of recording a four-exposure specklegram where the rotations are done between exposures. This specklegram is then optically processed in a whole field approach rendering isothetic fringes, which give detailed information about the multiple rotations. It is experimentally demonstrated that the proposed arrangement permits the depiction of six isothetics in order to measure either six different angles or three nonparallel components for two local general in-plane displacements.

• OSTI ID: 20929693
• Journal Information: Applied Optics, Vol. 46, Issue 14; Other Information: DOI: 10.1364/AO.46.002676; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
IMAGES
INTERFEROMETRY
PHOTOGRAPHY
ROTATION
VISIBLE RADIATION