Passive OCT probe head for 3D duct inspection
| dc.contributor.author | Ford, Helen D. | - |
| dc.contributor.author | Tatam, Ralph P. | - |
| dc.date.accessioned | 2014-08-02T03:59:56Z | |
| dc.date.available | 2014-08-02T03:59:56Z | |
| dc.date.issued | 2013-07-24T00:00:00Z | - |
| dc.description.abstract | A passive, endoscopic optical coherence tomography (OCT) probe has been demonstrated, incorporating an imaging fibre bundle and 45° conical mirror, and with no electromechanical components at the probe tip. Circular scanning, of the beam projected onto the proximal face of the imaging bundle, produces a corresponding circular scan at the distal end of the bundle. The beam is turned through 90° by the conical mirror and converted into a radially-scanned sample beam, permitting circumferential OCT scanning in quasi-cylindrical ducts. OCT images, displayed as polar plots and as 3D reconstructions, are presented, showing the internal profile of a metallic test sample containing a 660µm step in the internal wall. Results have been acquired using two methods: one that makes use of multiple beam-circle diameters, and a mechanical 'pull-back' technique. The effects of the convex surface of the conical mirror on spatial resolution are discussed, with suggested working distances given for different application regimes. | en_UK |
| dc.identifier.citation | Helen D. Ford and Ralph P. Tatam, Passive OCT probe head for 3D duct inspection, Measurement Science and Technology, 2013, Volume 24, Number 9, Paper number 094001. | |
| dc.identifier.issn | 0957-0233 | - |
| dc.identifier.uri | http://dx.doi.org/10.1088/0957-0233/24/9/094001 | - |
| dc.identifier.uri | http://dspace.lib.cranfield.ac.uk/handle/1826/8377 | |
| dc.language.iso | en_UK | - |
| dc.publisher | Iop Publishing Ltd | en_UK |
| dc.rights | This is an author-created, un-copyedited version of an article accepted for publication in Measurement Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/0957-0233/24/9/094001 | |
| dc.title | Passive OCT probe head for 3D duct inspection | en_UK |
| dc.type | Article | - |