OCT

Optical Coherence Tomography 

OCTOptical Coherence Tomography uses a similar principle to ultrasonics by detecting visible or infrared light scattered from surfaces and subsurface features to obtain a 3D image of the item being inspected.

OCT suffers from strong scattering, limiting the depth of penetration to millimetres, but it produces images with much higher resolution than can be achieved with ultrasonics.

OCT is a non-contact technique that has applications in medicine and industry. It is used by opticians to examine the condition of retinas. It has also been applied in the inspection of composites.

For more information on OCT, see:
https://wasatchphotonics.com/applications/diy-optical-coherence-tomography-setup
and
www.laserfocusworld.com/industrial-laser-solutions/article/14221414/oct-produces-a-better-weld


WHAT THE HEC?! articles are not intended to be the definitive account on the topic or acronym in question. Readers’ comments and contributions are welcomed. Email: ndtnews@bindt.org