Patent ID: 8896842

Claim:
A system for imaging a subject, the system comprising: two imaging paths, a scanning beam optical coherence tomography (OCT) imaging path and a video imaging path, wherein the scanning beam OCT imaging path comprises: a source of broadband optical radiation, a beamsplitter dividing the source of broadband optical radiation into a reference path and a sample path; and a beamsplitter that mixes source light reflected from the subject in the sample path with source light returned from a reference reflector in the reference path to create a wavelength dependent interferogram directed along a detection path to a detection module; wherein the video imaging path comprises: an illumination path including a source of optical radiation for illuminating the sample; an image capture path including an image capture device for capturing an image of an illuminated region of the subject; and a beam combiner for coupling the illumination path with the image capture path; a dichroic beamsplitter configured to couple the scanning beam OCT imaging path and the video imaging path, wherein the scanning beam OCT imaging path and the video imaging path share a common objective lens; wherein the scanning beam OCT imaging path and the video imaging path share a common intermediate conjugate image plane between the dichroic beamsplitter and the subject; wherein focal control is achieved for the scanning beam OCT imaging path and the video imaging path concurrently through adjustment of one or more common optical elements distal to the common intermediate conjugate plane; wherein the illuminator is a fiber ring illuminator; wherein a ring of illumination for the fiber ring illuminator is coaxial with the scanning beam OCT imaging path over a region where the scanning beam OCT imaging path and the video imaging path are in common; and wherein the fiber ring illuminator comprises a ring of optical fibers that defines an annulus.