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Proceedings Paper

Design and simulation of GRIN objective lenses for an imaging fiber based speckle metrology system
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Paper Abstract

Gradient-Index (GRIN) lenses are characterized by its small diameter and length, enabling them to be an effective lens for an integrated probe based imaging system. For a speckle-based surface metrology system, the imaging lens plays an important role in deciding the statistical dimensions of the speckles. In such cases, the design and simulation of the lens system would be a key process to better the performance of the lensed imaging fiber probe. In this context, this paper focuses on the design of lensed fiber probes for a speckle-based surface metrological imaging system that can find intra cavity interrogation applications. Different optical properties of GRIN lenses and imaging fibers are considered while designing the final probe distal end to meet the targeted specifications. Singlet GRIN lens configuration is analyzed for a front view configuration and a parameter optimization has been carried out to obtain the specifications including the field-of-view, resolution, working distance and magnification.

Paper Details

Date Published: 11 November 2016
PDF: 6 pages
Proc. SPIE 10150, Second International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2016), 1015008 (11 November 2016); doi: 10.1117/12.2243778
Show Author Affiliations
P. Prabhathan, Nanyang Technological Univ. (Singapore)
A. S. Guru Prasad, Nanyang Technological Univ. (Singapore)
Aswin Haridas, Nanyang Technological Univ. (Singapore)
Kelvin H. K. Chan, Nanyang Technological Univ. (Singapore)
Rolls-Royce Singapore (Singapore)
V. M. Murukeshan, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 10150:
Second International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2016)
Agus M. Hatta; Aulia M. T. Nasution, Editor(s)

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