Rolls-royce Corporation

Prabhathan Patinharekandy

Murukeshan Vadakke Matham

Aswin Haridas

Guru Prasad Arudi Subbarao

Pulkit Kapur

Kelvin H K Chan

An imaging probe () for use in measuring surface roughness by angular speckle correlation is shown. The imaging probe comprises a first illumination fibre () to illuminate a sample location () on a surface, and having an input end for coupling of coherent light into the fibre, and an output end cleaved at an angle &#x3b8;, a second illumination fibre () to illuminate the sample location on the surface, and having an input end for coupling of coherent light into the fibre, and an output end cleaved at an angle &#x3b8;that is different from &#x3b8;, and an image transmission system () for transmission of a speckle pattern caused by illumination of the sample location on the surface by coherent light from either the first illumination fibre or the second illumination fibre.

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Singapore, Singapore

Prabhathan Patinharekandy