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Proceedings Paper

Novel composite coded pattern for small angle measurement using imaging method
Author(s): Suguna Sree Nukala; Sai Siva Gorthi; Kameswara Rao Lolla
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Paper Abstract

A novel approach for measurement of small rotation angles using imaging method is proposed and demonstrated. A plane mirror placed on a precision rotating table is used for imaging the newly designed composite coded pattern. The imaged patterns are captured with the help of a CCD camera. The angular rotation of the plane mirror is determined from a pair of the images of the pattern, captured once before and once after affecting the tilt of the mirror. Both simulation and experimental results suggest that the proposed approach not only retains the advantages of the original imaging method but also contributes significantly to the enhancement of its measuring range (±4.13° with accuracy of the order of 1 arcsec).

Paper Details

Date Published: 5 September 2006
PDF: 11 pages
Proc. SPIE 6289, Novel Optical Systems Design and Optimization IX, 62891D (5 September 2006); doi: 10.1117/12.678792
Show Author Affiliations
Suguna Sree Nukala, Indian Institute of Science (India)
Sai Siva Gorthi, Indian Institute of Science (India)
Kameswara Rao Lolla, Indian Institute of Science (India)

Published in SPIE Proceedings Vol. 6289:
Novel Optical Systems Design and Optimization IX
José M. Sasian; Mary G. Turner, Editor(s)

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