Multifunctional confocal fundus imaging OCT system based on optical fiber controller

Abstract

The invention provides a multifunctional confocal fundus imaging OCT system based on an optical fiber controller. The system comprises an OCT light source, a plurality of fundus imaging light sources,a first optical switch, a second optical switch, an optical fiber coupler, a spectrometer, a computer, a control circuit, a photoelectric detector, an optical switch, a reference arm and a sample arm, wherein the OCT light source and the fundus imaging light sources are connected with the optical fiber coupler through the first optical switch; the optical fiber coupler is connected with the spectrometer through the second optical switch; the spectrometer, the computer and the control circuit are sequentially connected; the second optical switch, the photodetector and the computer are sequentially connected; the optical fiber coupler is connected with the reference arm through the optical switch; the optical fiber coupler is connected with the sample arm; and the control circuit is connected with the first optical switch, the second optical switch and the optical switch. The multifunctional confocal fundus imaging OCT system has the advantages that on the basis of OCT fundus imaging, fundus confocal imaging with high signal-to-noise ratio and high resolution is realized by adding a small number of devices by using existing optical path devices, and low cost is achieved.

Description

Technical field [0001] The invention relates to the technical field of medical imaging, in particular to a multifunctional confocal fundus imaging OCT system based on an optical fiber controller. Background technique [0002] Optical coherence tomography (Optical Coherencetomography, OCT) is an imaging technology that has developed rapidly in the past ten years. It uses the basic principles of weak coherence light interferometer to detect weak incidence of biological tissue at different depth levels. The back reflection or several scattered signals of coherent light can be scanned to obtain two-dimensional or three-dimensional structure images of biological tissues. Existing fundus imaging technologies include linear fundus imaging, area array imaging and confocal imaging. Among them, linear fundus imaging requires an additional light source and scanning galvanometer, which increases the cost of the system and the complexity of the optical path. Linear scanning divides the energy...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a multifunctional confocal fundus imaging OCT system based on an optical fiber controller, which solves the need for additional light sources and scanning galvanometers in the existing fundus imaging technology, and increases the system's The cost and the complexity of the optical path affect the signal-to-noise ratio of the image, and at the same time reduce the resolution of the image, which is a problem of high cost

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