Confocal fundus imaging optical coherence tomography (OCT) system based on optical fiber controller

Abstract

The present invention provides a confocal fundus imaging optical coherence tomography (OCT) system based on an optical fiber controller, including an OCT light source, an optical fiber coupler, an optical switch, a spectrometer, a computer, a control circuit, a photoelectric detector, a photoswitch, a reference arm and a sample arm; the OCT light source is connected with the optical fiber coupler,the optical fiber coupler is connected with the spectrometer through the optical switch, the spectrometer, the computer and the control circuit are connected in turn, the optical switch, the photoelectric detector and the computer are connected in turn, the optical fiber coupler is connected with the reference arm through the photoswitch, the optical fiber coupler is connected with the sample arm, and the control circuit is connected with the optical switch and the photoswitch. On the basis of OCT fundus imaging, existing optical devices are used to realize high-signal-to-noise-ratio and high-resolution fundus confocal imaging by adding a small number of devices, the cost is low, an optical fiber path is adopted, debugging and maintenance are facilitated, and the size of the system is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of medical imaging, in particular to a confocal fundus imaging OCT system based on an optical fiber controller. Background technique [0002] Optical coherence tomography (Optical coherence tomography, Optical Coherence tomography, OCT) is an imaging technology that has developed rapidly in the past decade. It uses the basic principle of weak coherent optical interferometer to detect Two-dimensional or three-dimensional structure images of biological tissues can be obtained by scanning the back reflection or several scattered signals of weakly coherent light. Existing fundus imaging technologies include linear fundus imaging, area array imaging, and confocal imaging. Among them, linear fundus imaging requires additional light sources and scanning galvanometers, which increases the cost of the system and the complexity of the optical path. Linear scanning divides the energy into a line , which affects the si...

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Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a 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, which increases the cost and cost of the system. The complexity of the optical path affects the signal-to-noise ratio of the image, while reducing the resolution of the image, and the problem of high cost

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