Optical system for large field of view and high resolution imaging of oct fundus

Abstract

The invention discloses an optical system for OCT fundus large-field-of-view and high-resolution imaging, including: a light source, a combined optical fiber, a collimation unit, a mirror, a scanning vibrating mirror unit, and an imaging unit; the imaging unit includes a scanning vibrating mirror unit to The first lens subunit, the second lens subunit and the eyepiece mirror unit arranged in sequence in the direction of the fundus; the eyepiece mirror unit is a double glued eyepiece eyepiece group; the optical surface near the second lens subunit of the double glued eyepiece group is Convex and the convex surface is hyperbolic. The present invention is beneficial in that the optical system of the provided OCT fundus large-field-of-view high-resolution imaging has a simple structure, and the eyepiece unit is a double-glued eyepiece group, and the double-glued eyepiece group is close to the second lens subunit. The optical surface is a convex surface and the convex surface is a hyperboloid surface, which is beneficial to correct the aberration of the fundus imaging of the human eye.

Description

technical field [0001] The invention relates to an optical system for OCT fundus large field of view and high resolution imaging. Background technique [0002] Optical coherence tomography (Optical Coherence Tomography, OCT) is a non-invasive high-resolution tomography technology based on low-coherence optical interferometry. It has been widely used in the fields of living biological tissue imaging and subsurface non-destructive testing. The imaging range of the existing OCT system is not large enough. For scattered lesions on the fundus, it needs to be obtained through multiple positioning scans or image stitching after multiple scans. Multiple scans will increase the diagnosis time, thereby increasing the discomfort of the patient. , and the image stitching technology of multiple scans, although it can obtain a wide range of fundus images, in addition to increasing the diagnosis time, the inaccurate location of the lesion caused by the error of the stitching technology als...

AI Technical Summary

Problems solved by technology

The imaging range of the existing OCT system is not large enough. For scattered lesions on the fundus, it needs to be obtained through multiple positioning scans or image stitching after multiple scans. Multiple scans will increase the diagnosis time, thereby increasing the discomfort of the patient. , and the image stitching technology of multiple scans, although it can obtain a wide range of fundus images, in addition to increasing the diagnosis time, the inaccurate location of the lesion caused by the error of the stitching technology also brings risks to the doctor's diagnosis and treatment.

Images