SYSTEMS AND METHODS FOR VARIABLE MODE OPTICAL COHERENCE TOMOGRAPHY IMAGING

摘要

Systems and methods for improvements to optical coherence tomography systems for operating in different imaging modes are presented. In one embodiment, a system for identifying the presence and type of an adjunct lens operably connected to the OCT instrument for changing between imaging modes in the system is described. In a second embodiment, a system for dynamically autofocusing the OCT system depending on the layer of interest is presented. In a third embodiment, the overall power of the system used for imaging can be adjusted depending on the location and type of scan desired while accounting for the safety standards for recommended light exposure.

主权项

1. An optical coherence tomography (OCT) system for generating images of the eye and capable of switching between different imaging modes, said system comprising;
a light source for generating a light beam propagating along an axis; a beam divider for directing a first portion of the light beam into a reference arm and a second portion of the light beam into a sample arm; optics for scanning the light beam in the sample arm over the eye of a patient to a plurality of positions in a plane perpendicular to the propagation axis of the beam; a detector for measuring light radiation returning from the sample and reference arms and generating output signals in response thereto; a processor for generating images based on the output signals; a first lens for focusing the light beam; a housing for containing the source, beam divider, detector and first lens; a second lens operably attached to the housing for changing the focusing properties of the first lens; and means for detecting the presence and/or type of the second lens attached to the housing.