Patent ID: 9089289
Filing Date: 2015-07-28
Classification: A61B,G01J

Abstract:
1. An optical imaging system for in-vivo retinal imaging, the system comprising: a first source for generating a reference beam of light at a first wavelength, a second source for generating incoherent light at a second wavelength different to said first; an optical imaging sub-system configured to split light from said second source into a plurality of beams, to introduce a path difference between said beams of light, and recombine those beams to form an interference fringe pattern that is imaged on a subject; a video camera configured to capture successive images of the subject as the subject is illuminated with light from said optical imaging subsystem; a reference image capture device configured to capture successive images of the subject as the subject is illuminated with light from said first source, said reference image capture device and said video camera being synchronized to successively capture images at substantially the same points in time; and a processor operable to process successive images captured by said reference image capture device to determine an extent to which the subject has moved between successive images, said processor being configured to derive, from the determined extent of movement, an indication of a phase shift in the interference fringe pattern, captured by the video camera, that is attributable to said determined movement.